246results about How to "Increase pressure difference" patented technology

The invention provides an impeller, a superfine mill applying the impeller and a superfine milling system comprising the superfine mill. The impeller comprises a wheel disc, straight surface type blades and straight surface type impact plates, and an abrasion-resistant layer is adhered to the surface of each straight surface type blade. The straight surface type blades are multiple and uniformly arranged on the wheel disc in the radial direction. The tail end of each straight surface type blade is provided with one corresponding straight surface type impact plate in the extension direction of the center of the wheel disc to the outer diameter edge of the wheel disc, and a first included angle is formed between each straight surface type blade and the corresponding straight surface type impact plate. The tail ends of the straight surface type blades are located within the outer diameter edge of the wheel disc. The initiating end of each straight surface type impact plate is connected with the tail end of the corresponding straight surface type blade. The tail ends of the straight surface type impact plates exceed the outer diameter edge of the wheel disc. According to the impeller, the superfine mill applying the impeller and the superfine milling system comprising the superfine mill, high-hardness nonmetal or metal can be milled into superfine powder; in addition, abrasion of equipment parts is small, and the function of particle size classification is achieved.

A draining aid for high-temp acidifying is proportionally prepared from dodecyldimethyl betaine, polyoxyvinyl perfluorooctylether-14,2, 3-epoxypropyltrimethyl ammonium chloride, methanol and water. When it is proportionally added to hydrochloric acid solution, the surface tension of acid solution is decreased to that less than 22 mN / m.

The invention relates to a preparation method for expansion jujube crisp slices. Non-fried expansion fruit and vegetable is a novel fruit and vegetable dried product subsequent to a traditional fruit and vegetable dried product, a vacuum frozen and dried product and a vacuum low-temperature fried fruit and vegetable crisp slice. The expansion fruit and vegetable crisp slice has the advantages of low fat, low calorie, high fiber, rich vitamins and minerals, and the like, and the prior flavor of the fruit and vegetable is concentrated. At present, a method for directly expanding fresh jujubes is not reported at home and aboard. The invention adopts the technological process of producing the expansion jujube crisp slice taking the fresh jujube as the raw material: the fresh jujubes-washing-enucleation-section-expansion-cooling-sorting-packaging-expansion jujube crisp slices. The invention has the advantages as followings: firstly, the materials are not needed to carry out sugar permeability treatment or pre-drying treatment, so that the processing procedure is simplified; secondly, pressure-difference expansion is adopted, and the defects of high oil content and short shelf life of the prior production of jujube expansion by vacuum frying are overcome; and thirdly, pressure difference is increased, thereby the expansion effect of the jujube crisp slices is favorable.

There are multiple parallel-extended grooves on the bipolar plate. The wall surfaces of each groove define one sectional area possessing the opening. The fittings utilized to reduce the said sectional area are set up at near the openings in order to increase the pressure difference between entries and exits of the gas passages so as to prevent the jam-up of the gas passages in the bipolar plate from water drops. Thus, the high efficiency operation of the fuel battery can be maintained.

The invention discloses an underwater towing body controlled by a front-edge-rotating cylindrical wing. Forced sinking hydrofoils of the underwater towing body adopt symmetrical airfoil profiles, andare symmetrically arranged on the two sides of the front portion of a main cavity, two rotating cylinders are symmetrically arranged at the front ends of the profile faces of the forced sinking hydrofoils relative to the main cavity, and are connected with a speed adjusting motor located inside the main cavity through rotating-cylinder rotating shafts; ducted propellers are symmetrically arrangedon the two sides of the back ends of the forced sinking hydrofoils; a transverse horizontal fixed empennage is arranged at the tai lend of the main cavity, and vertical streamlined flap type rudders are symmetrically arranged at the two ends of the transverse horizontal fixed empennage respectively; a flap is arranged at the tail end of each vertical streamlined flap type rudder, and is connectedwith a flap angle control device. According to the underwater towing body controlled by the front-edge-rotating cylindrical wing, by changing the rotating speeds and the rotating directions of the rotating cylinders at the front ends of the forced sinking hydrofoils, attack angles of the forced sinking hydrofoils can be efficiently and flexibly adjusted, and the aim of changing the motion trail ofthe vertical direction of the towing body is achieved; on this basis, the thrust directions of two-side propellers are changed through assisting, and directional floating and sinking can be achieved.

The invention discloses a pneumatic type gas and slag separation device and method which comprises a methane dust catcher, a connection flexible pipe, a high pressure pipe, a pneumatic ejector, a dust-removing nozzle, a dust-removing separation bucket, a methane connection pipe and a methane extraction pipe. The methane dust catcher is used for collecting dust in a drilling hole and gushing methane in the drilling construction process. The connection flexible pipe is used for connecting the methane dust catcher and the pneumatic ejector. The high pressure pipe is used for delivering high pressure air into the pneumatic ejector to enable negative pressure to be produced in an ejector suction chamber. The pneumatic ejector is used for increasing pressure difference between an inlet and an outlet of the connection flexible pipe and delivering suctioned gas water and slag mixing fluid to the dust-removing separation bucket, and the dust-removing separation bucket sediments dust through the dust-removing spraying nozzle and separates the gas water and slag mixing liquid into gas, liquid and solid. The pneumatic type gas and slag separation device and method is simple in structure and capable of effectively reducing working face methane and dust density, and simultaneously is high in spraying and dust removing efficiency and less in water usage.

The present invention relates to a reverse-osmosis apparatus (1) having a diaphragm unit (2) which has an inlet (3), a permeate outlet (4) and a concentrate outlet (5), a high-pressure pump (8) which is connected to the inlet (3), a pressure exchanger (11), of which the concentrate side (10) is connected to the concentrate outlet (5), and a boosting pump between the pressure exchanger (11) and the inlet (3). The aim is to consume as little energy as possible. To this end, provision is made for the booster pump to be in the form of a positive-displacement pump (16).

The invention discloses a freeze dryer refrigerating system and a control method of the refrigerating system. The refrigerating system comprises one or more sets of main refrigerating components and one or more sets of auxiliary refrigerating components. The main refrigerating components and the auxiliary refrigerating components are in parallel connection to form independent refrigerating circulation loops for refrigerating a cold trap and plate layers on a freeze dryer. Different refrigerating media are adopted in the main refrigerating components and the auxiliary refrigerating components. The control method is based on the above refrigerating system. The freeze dryer refrigerating system and the control method have the advantages of being simple and compact in structure, easy and convenient to operate, capable of improving the refrigerating effect and working reliability and the like.

A fine-grain material centrifugal filtering and dewatering device comprises a frame, a housing, a motor, a drum and a speed regulator. A spindle of the motor penetrates the bottom of the housing to be connected with the drum, the spindle penetrates the housing to be provided with a sealing component, the upper portion of the housing is provided with an upper housing cover, the lower portion of the housing is provided with a liquid discharge outlet, the side wall of the drum is provided with a plurality of filtrate holes, and filter medium is attached to the inner wall of the drum. The upper portion of the drum is provided with an upper drum cover, the housing is provided with a feed pipe penetrating the upper housing cover and the upper drum cover to enter the drum, a mechanical sealing component is arranged at an inlet of the upper drum cover, the feed pipe is respectively provided with a suspension liquid feed system and an air feed system through pipelines, and the pipelines are provided with flow control valves. By coordinating pressurized filtering and centrifugal filtering, filtering speed can be accelerated by centrifugal force, dewatering speed is accelerated by compressed air, therefore dewatering process of a centrifugal filter is enhanced, solid-liquid separation efficiency is improved, residual water in centrifugal filter cakes is reduced and centrifugal dewatering effect of fine-grain materials is improved.

The invention discloses a magnetic mirror field-confining plasma sealing window and a sealing method thereof. The plasma sealing window provided by the invention comprises a plasma sealing window body; a plasma channel is formed in the middle of the window body; a cathode is arranged at one end of the plasma channel and an anode is arranged at the other end of the window body; the cathode and the anode are connected with a sealing window power supply; a confining magnet is arranged outside the window body; and the plasma sealing window further comprises a magnet power supply for supplying power to the confining magnet, and a vacuum pump. According to the invention, the confining magnet is used for generating a magnetic mirror field to confine ions in the plasma sealing window; the structure of the magnetic mirror field is a magnetic field configuration with two higher sides and a lower middle part, so that plasmas in the plasma channel can be confined and only the ions and electrons which are higher than certain energy can leave the plasma channel. Therefore, the speed of the ions and the electrons in the plasma sealing window leaving from the plasma sealing window becomes slow, and the aims of increasing pressure difference of the plasma sealing window and reducing the power consumption of the plasma sealing window are achieved.

The invention discloses an elastic reset sucker which comprises a sucker body capable of being adsorbed on the surface of an object, wherein the bottom surface of the sucker body is concave inwards to form an adsorbing cavity, and a closed ring surface which is positioned in the same plane with the adsorbing cavity is arranged on the periphery of the adsorbing cavity; and an elastic reset body for causing the sucker body to reset to the back surface of the sucker body is arranged in the adsorbing cavity, the elastic reset body comprises a telescopic sleeve and an elastic part arranged in the telescopic sleeve, and the elastic reset body is positioned in the middle position of the adsorbing cavity and connected with the sucker body. When in use, the sucker body is extruded on the working surface, air in the adsorbing cavity is exhausted, a closed space is formed, then the hand is released, and the elastic reset body utilizes the reset elasticity for jacking up the sucker body towards the back surface of the sucker body, thereby effectively increasing the volume of the closed space, greatly reducing the pressure in the closed space, enhancing the pressure difference inside and outside the sucker body, increasing the adsorbability of the sucker body and ensuring the adsorption to be firmer.

The invention provides a water flow power generation device which comprises at least one support, water wheels, a transmission and a power generator, wherein the transmission and the power generator are driven by the water wheels; each support comprises an upper support and a lower support; a tip-angle-shaped commutating body A is fixedly connected between the upper support and the lower support and close to the water inlet ends of the water wheels; at least two water wheels which rotate backward are fixed between the upper support and the lower support, and the blades of the adjacent water wheels are staggered mutually; the same ends of the water wheels are respectively connected with synchronizing gears which can be meshed mutually; and the power generator is connected with a water wheel shaft, the synchronizing gears and the water wheels through the transmission. Under the effect of the synchronizing gears, each water wheel can simultaneously rotate backward, the mutual collision and interference of the blades of the adjacent water wheels can not happen, the torsion force of each water wheel can be transmitted to the power generator for generating power, not only can the utilization ratio of the water energy be improved, but also the power generation efficiency can be improved, the integral power generation device has a simple structure and low design and manufacturing cost, is convenient to install, and can be widely used in various water flows.

A directional valve for controlling an actuator by means of pressurized medium, including: a spool fitted to move axially inside the directional valve; a first position of the spool, in which the spool tends to be set; and a second position of the spool, to which the spool can be moved by a pilot control force. Additionally, the directional valve includes a metering orifice placed in the pressure port or in the first work port or in the second work port or in the tank port, and across which a pressure difference is effective. The spool further includes a second position, to which the spool can be moved by a pilot control force. When the spool is in at least the second position, the directional valve is fitted to generate a compensating force proportional to said pressure difference, to move the spool to compensate for the flow.

The invention relates to the field of design of an air conditioner indoor unit, in particular to an air conditioner indoor unit air outlet structure and method. Aiming at the problem in the prior art, the invention provides the air conditioner indoor unit air outlet method, which is characterized in that a turbofan is adopted to increase air pressure in the indoor unit; a 360-degree annular evaporator is adopted for effectively enlarging the cold / heat exchange area under the same size of the whole indoor unit; air filtration and purification effects are effectively increased by adopting the 360-degree annular shape; an air outlet resembles a wing, pressure difference of the front and the back of the air outlet is increased, air driving is realized, and the temperature adjustment of indoor air is accelerated. By the mixed air flow of cold / hot air flow and indoor air, the discomfort of people caused by direct blowing of the cold / hot air flow is reduced; according to specific implementation conditions, an auxiliary air inlet fan can be adopted, and the cold / heat exchange efficiency can be effectively increased. The device comprises an external pipeline, the shell air inlet, the shell air outlet, an annular filter screen, the annular evaporator, the turbofan and the like.

The invention relates to an expansion method for shaping jujubes. In the prior art, before a fruit and vegetable expansion product is expanded, complex treatment is needed to be carried out on processed materials, such as pre-drying of materials (water content of raw materials is lowered to a certain degree), sugar permeability treatment, moisture equilibrium treatment, pre-expansion treatment, and the like. A method of directly expanding fresh jujubes is not reported at home and aboard. The invention adopts the technological process of producing shaping expansion jujubes taking the fresh jujubes as the raw material as follows the fresh jujubes-washing-enucleation-expansion-cooling-sorting-packaging-crisp slice of expansion jujube. The method is characterized in that firstly, the jujube expansion raw materials are only washed and enucleated without any other treatment, and processing procedures are simplified; secondly, pressure-difference expansion is adopted, and the defects of high oil content and short shelf life of the prior production of jujube expansion by vacuum frying are overcome; and thirdly, external pressure is adopted, thereby the pressure difference is increased, and the expansion effect of the shaping jujubes is favorable.

The invention discloses an air valve for an axial flow fan, the axial flow fan with the air valve and a cooling tower or an air cooler with the axial flow fan. The disclosed air valve for the axial flow fan comprises a valve body and a plurality of blades, wherein each blade comprises a blade shaft and a main blade; the inner edges of the main blades are fixed with the blade shafts; the valve body comprises an outer barrel and a central seat which are relatively fixed, and the central seat is arranged in the outer barrel; the outer end and the inner end of the blade shaft are respectively and rotatably arranged on the outer barrel and the central seat; and the plurality of blades are radially distributed on the periphery of the central seat. In the disclosed air valve for the axial flow fan, the blades can be matched with the pressure distribution of an air outlet of the axial flow fan, the blade arrangement area corresponds to a positive pressure air exhaust area of the air outlet, and the opening degree of each blade can be better matched with the pressure of the area to reduce the air exhaust resistance of the air outlet so as to reduce the vibration of the blades, lower the noise and the opening pressure of the air valve and improve the working reliability of the air valve.

The invention relates to a spongy urban siphoning and water-draining roof which comprises a gutter. An overflow port is formed in the side wall of the gutter, the gutter is provided with an overflow pipe, a plurality of rainwater siphoning hoppers are installed in the gutter and are connected with a pipeline with a draining port, a second one-way valve and a branch pipe are arranged on the pipeline, the branch pipe is located above the second one-way valve, a first one-way valve and a negative pressure device are installed on the branch pipe, and the negative pressure device is located at the end of the branch pipe. The negative pressure produced by wind energy and a siphoning and water-draining structure are integrated, a pressure different between the upper and lower water inlet-outlet ends of the pipeline is further increased, accordingly the water draining speed is improved, the water draining and water proofing capability is improved, and the spongy urban siphoning and water-draining roof is simple in structure, low in device cost, green, free of pollution, clean, free of energy consumption and convenient to use and convenient.

The invention provides an inner and outer tube type flowmeter and a flow detection method. The inner and outer tube type flowmeter is characterized in that an inner tube as long as an outer tube is arranged in the outer tube, and the inner tube comprises an inlet tube, a shrinking tube, a pressure tapping tube, an expanding tube and an outlet tube that are connected in sequence. Compared with the traditional inner and outer tube differential flowmeters, the inner and outer tube type flowmeter is provided with the inlet tube and the shrinking tube at the front end of the pressure tapping tube, a fluid entering the inner tube experiences shrinking, accelerating, expanding and decelerating, and a fluid entering a gap between the inner and outer tubes experiences expanding, decelerating, shrinking and accelerating. A difference between inner and outer tube fluid speeds is maximum, to be specific, pressure tapping is performed at the middle tube with maximum pressure difference, and a maximum differential value can be acquired. The inner and outer tube type flowmeter is simple in structure and reasonable in design, the differential pressure value of the fluids in the inner tube and outer tube is increased, the sensitivity, accuracy and energy efficiency of the inner and outer tube type flowmeter are enhanced, and final measurement results are accurate and reliable.

The invention relates to an improved cooling system structure with a double-expansion water kettle. The improved cooling system structure with the double-expansion water kettle comprises a high-temperature circulating cooling system and a low-temperature circulating cooling system. The high-temperature circulating cooling system comprises an expansion water tank, a high-temperature cooler, an engine cooling water jacket, a first water pump, an electronic thermostat, an engine oil cooler, an electronic supercharger and a heater. The low-temperature circulating cooling system comprises an expansion water tank, a low-temperature cooler, a turbocharger, a second water pump, an intercooler and a BSG. According to the improved cooling system structure, due to the fact that the two circulating cooling systems are arranged and the high-temperature cooler and the low-temperature cooler are independently arranged, the requirement of different to-be-cooled parts for temperature is effectively guaranteed, and the size of the cooling system is not increased according to the technical scheme.

The invention relates to a water-inlet structure of a flocculation container for a washing machine. The top of the flocculation container is provided with an inwardly-protruding water-inlet spray head, in which multiple water-spray holes are arranged. The water-spray holes having different hole diameters are correspondingly arranged based on the distance among the water-spray holes and the side wall of the flocculation container. Water flows at different speed are sprayed out of the water-spray holes having different hole diameters and can be flushed to the side wall of the flocculation container. The water-inlet structure of the flocculation container for the washing machine has following beneficial effects: by the above device, all water inlet flows sprayed out of the water-spray holes having different hole diameters can be flushed to the inner wall of the flocculation container such that water inlet flows of the flocculation container are used for flushing the inner wall of the flocculation container; and the purpose of utilizing water inlet flows to clean the flocculation container is fulfilled. The invention further relates to a washing machine provided with the above water-inlet structure of the flocculation container. The washing machine is simple in structure and significant in effect and is suitable for promotional use.

3-Hydroxypropanal is prepared by reacting acrolein with water under pressure and in the presence of an ion exchange resin while adding a carboxylic acid to the reaction mixture.

The invention relates to a quick all-season refrigerant filling and recycling system for a compressor test system. The quick all-season refrigerant filling and recycling system comprises a compressing and condensing unit and a refrigerant storage tank. When refrigerant is filled, an inlet of the compressing and condensing unit communicates with a gas-phase refrigerant interface formed in the compressor test system, an outlet of the compressing and condensing unit communicates with the refrigerant storage tank, the refrigerant storage tank communicates with a liquid-phase refrigerant interface formed in the compressor test system, and a heating device which is used for heating and gasifying liquid-phase refrigerant is arranged in the refrigerant storage tank; when the refrigerant is recycled, the inlet of the compressing and condensing unit communicates with the refrigerant storage tank, the outlet of the compressing and condensing unit communicates with the gas-phase refrigerant interface, the liquid-phase refrigerant interface communicates with the refrigerant storage tank, and a cooling device which is used for cooling the liquid-phase refrigerant is arranged in the refrigerant storage tank. According to the quick all-season refrigerant filling and recycling system, the defect that the compressing and condensing unit cannot be started or the refrigerant is slowly recycled in extreme weather conditions is overcome, and the all-season refrigerant filling and recycling of the compressor test system can be quickly realized by virtue of the heating device or the cooling device.

The invention discloses a distributed energy conversion method and system. The distributed energy conversion method comprises the steps that first fluid flowing in a first circulation loop in a circulating mode is refrigerated by using a working medium of a heat pump; a heat pump is used for compressing the working medium to further raise the temperature of the working medium for heating second fluid flowing in a second circulation loop in a circulating mode; the heated second fluid is conveyed to be used for heating an input pressure working medium of an air engine to enable the input pressure working medium to vaporize into pressure working medium gas for actuating the air engine, and after the input pressure working medium is heated and cooled, the second fluid is reheated by the working medium of the heat pump for reheating the input pressure working medium of the air engine, so that the second fluid is cyclically heated and cooled; and the refrigerated first fluid is conveyed to be used for condensing an output pressure working medium of the air engine, and after the output pressure working medium of the air engine is condensed and heated up, the first fluid is re-refrigeratedby the working medium of the heat pump for condensing the output pressure working medium of the air engine, so that the first fluid is cyclically condensed and heated up.

The invention discloses a collecting device of smoke in electrolysis. The collecting device comprises a main first main smoke pipe, a second main smoke pipe, a first smoke branch pipe, a second smoke branch pipe and a main smoke pipe. The collecting device is characterized in that the first ends of the first main smoke pipe and the second main smoke pipe are respectively closed, and the second end of the first smoke branch pipe and the second end of the second smoke branch pipe are communicated; the first end of the first smoke branch pipe is communicated with the first main smoke pipe, and the first end of the second smoke branch pipe is communicated with the second main smoke pipe; and the first end of the main smoke pipe is connected to the connecting position of the first main smoke pipe and the second main smoke pipe, and the second of the main smoke pipe is connected to an exhaust fan. According to the collecting device disclosed by the invention, the negative pressure distribution of all the smoke pipes is uniform, so that the smoke in electrolysis is conveniently collected; and in addition, the heat exchange area of the smoke in electrolysis is enlarged, the radiation of the smoke in electrolysis is convenient and the radiating efficiency of the collecting device is improved.

The invention provides a wind power generator blade, a wind power generator cooling device and a wind power generator unit. The wind power generator blade comprises a blade root and a blade body, and further comprises air inlets, air outlets, blade air channels and backflow prevention devices, wherein the air inlets are formed in the blade root; the air outlets are formed in the outer surface of the blade body; the blade air channels are formed in the blade and enable the air inlets and the air outlets to communicate; and the backflow prevention devices are arranged at the air outlets. According to the wind power generator blade, the blade air channels are arranged in the blade, the air outlets are formed in the outer surface, and accordingly air at the air inlets can be guided to the air outlets through the blade air channels and then discharged. Through the pressure difference generated by the blade during rotating, moving airflow from a cabin to the air outlets of the blade is formed, and then heat in the cabin is dissipated.

The invention discloses a mixed flow magnetorheological valve which comprises a left end cover, a valve spool, a valve body, a guide disk, a magnetic disk, a positioning disk, a gasket, a coil, a sealing ring, a screw and a right end cover. A flow passage between the magnetic disk and the valve body forms an axial damping gap, and flow passages among the magnetic disk, the valve body and the valve spool form radial damping gaps. When current is inputted into the coil, magnetic lines vertically penetrate the axial and radial damping gaps, and the magnetic induction intensity is generated under the action of a magnetic field. The pressure difference in the axial and radial damping gaps can be controlled by adjusting the strength of the current. By the aid of the structure, the magnetorheological valve has enough pressure difference, clogging of the valve is avoided, the performance of the valve is more stable, the adjustable range of the pressure difference is wider, and the magnetorheological valve is accurate in damping gap positioning, compact in structure, small in size, convenient to assemble, particularly suitable for serving as a damper bypass valve and applied to damping systems of industries such as a railway and a traffic.

The invention provides a temperature different generator which is composed of a heat source and a power generating unit, wherein the generator is formed by a Carnot cycling machine, a lithium bromide set, a generator and a booster pump, wherein the Carnot cycling machine is formed by four parts including a blade, a heat radiator, a throttling unit and an evaporator; and the lithium bromide set is formed by a generator, a condenser, an evaporator, an absorber, a heat exchanger, a circulating pump and the like. The temperature different generator has the beneficial effects that the combined lithium bromide set can expand a low-grade heat source temperature difference at 60-150 DEG C to 100-240 DEG C, and a temperature difference between the heat radiator and the evaporator of the Carnot cycling machine is enlarged, so that a pressure difference of the blade is expanded; and finally, the power generation efficiency is improved to 25-35%, and the temperature different generator can be used for a thermal power plant or other boilers to carry out residual heat power generation and solar power generation.

The invention discloses a marine multifunctional micro-plastic collecting device comprising a coarse particle filter tube, a fine particle collecting tube and a tail tube, wherein the coarse particlefilter tube, the fine particle collecting tube and the tail tube are sequentially connected from front to back; a flow guide cover is arranged at the front end of the coarse particle filter tube, andthe coarse particle filter tube is arranged at an opening part of the flow guide cover; a coarse particle filter screen is fixed in the rear part of the coarse particle filter tube; flow guide rings are arranged in the coarse particle filter screen; the flow guide rings are of an annular structure; a central concave hole of the flow guide cover is aligned to the middles of the flow guide rings; the flow guide rings are of a streamline structure; a channel between the central concave hole of the flow guide cover and the front ends of the flow guide rings forms a venturi tube shape with two thick ends and the fine middle; a circular channel between the flow guide rings and a channel between the flow guide rings and a shell of the coarse particle collecting tube also form a venturi tube shape; a fine particle filter screen is arranged between the fine particle collecting tube and the tail tube; and a venturi tube shape with two thick ends and a thin middle is formed between the tail partof the fine particle collecting tube and the tail tube. According to the marine multifunctional micro-plastic collecting device in the invention, the micro-plastic rubbish in the lake and the ocean can be collected.

The invention discloses an anti-skid tray based on air pressure adsorption. The tray comprises a supporting plate, and a liquid storage cavity is formed in the supporting plate; the liquid storage cavity is filled with low-boiling-point evaporation liquid; a heat conducting plate is fixedly inserted into the upper wall of the supporting plate; and the heat conduction plate is of a T-shaped structure. The lower end of the heat conduction plate extends into the liquid storage cavity; the upper wall of the liquid storage cavity communicates with two containing cavities through two connecting pipes. The side walls of the ends, close to the connecting pipe, of the two containing cavities are elastically connected with driving magnetic blocks through reset springs. The ends, away from the driving magnetic blocks, of the two containing cavities communicate with the outside through air outlet pipes, two negative pressure grooves are formed in the upper wall of the supporting plate, driven magnetic blocks are connected to the inner walls of the negative pressure grooves in a sealed and sliding mode, and the driven magnetic blocks and the driving magnetic block attract each other in a heteropolar mode. According to the anti-skid tray, utensils can be effectively prevented from sliding, it is guaranteed that the utensils can be stably placed on the tray, and the tray can be prevented fromsliding when customers have dinner.

The invention provides an electrolyte injection apparatus for a battery, belonging to the field of batteries. The objective of the invention is to provide the electrolyte injection apparatus capable of improving the electrolyte injection rate of the battery. The electrolyte injection apparatus comprises an electrolyte supplying mechanism, an electrolyte injection cup, an injected electrolyte sealing valve, a vacuum valve and positive valve, wherein the electrolyte supplying mechanism comprises an electrolyte storage box and a first electrolyte outlet; the first electrolyte outlet is communicated with the electrolyte storage box; the electrolyte injection cup comprises an electrolyte storage chamber, a first electrolyte inlet, a second electrolyte outlet, a vacuum opening and a positive voltage opening; the first electrolyte inlet, the second electrolyte outlet, the vacuum opening and the positive voltage opening are separately communicated with the electrolyte storage chamber; when an electrolyte is stored in the electrolyte storage chamber, the electrolyte can flow into the second electrolyte outlet and not into the vacuum opening; the first electrolyte outlet may be communicated with the first electrolyte inlet; the second electrolyte outlet is used for hermetic butt joint with an electrolyte inlet of the battery; the injected electrolyte sealing valve is matched with the first electrolyte inlet and can seal and open the first electrolyte inlet; the vacuum valve is communicated with the vacuum opening; and the positive valve is communicated with the positive voltage opening.