33results about How to "Stop Spill" patented technology

The invention discloses an LED (Light Emitting Diode) epitaxial structure with a P (Positive) type superlattice and a preparation method thereof. The epitaxial structure comprises a substrate, wherein a GaN (Gallium Nitride) buffer layer, an undoped GaN layer, an n (negative) type GaN layer, a multi-quantum well luminous layer, a first P type GaN layer, a P type AlGaN (Aluminium Gallium Nitride) electronic blocking layer and a second P type GaN layer are sequentially arranged on the substrate from bottom to top, and the P type superlattice formed by a PInGaN (P type Indium Gallium Nitride) potential well layer and a PAlGaN potential barrier layer in a periodic interactive overlapping way is arranged between the P type AlGaN electronic blocking layer and the second P type GaN layer. The PInGaN potential well layer in the P type superlattice generates and constrains a great number of holes for the formation of a two-dimensional hole high-density state; the PAlGaN potential barrier layer hinders the escape of the holes; in such a way, the transverse spreading of the holes is improved, the electron overflow can be prevented, the hole injection efficiency is increased and the electron and hole recombination probability is improved; and therefore, the brightness of a chip can be improved by 5-10%.

The invention discloses an assembly type main structure of a building, and relates to the technical field of building engineering structures. The assembly type main structure of the building comprises isolated foundations, at least one layer of supporting beam group and at least one layer of cold-formed thin-walled steel composite beam plates are arranged on the isolated foundations, and a roof frame structure is arranged on the top supporting beam group, wherein each layer of supporting beam group comprises a plurality of square tubular columns, and the upper portion of each square tubular column is provided with a beam support; each cold-formed thin-walled steel composite beam plate comprises a lipped channel stiffened structural beam, a profiled steel sheet, a reinforcing mesh and a concrete plate, and the end of each lipped channel stiffened structural beam is provided with a sleeve; each lipped channel stiffened structural beam comprises a vertical plate, a first transverse plate and a second transverse plate, a vertical baffle is arranged above each first transverse plate, and stiffened structures are arranged on the first transverse plates, the second transverse plates, the vertical plates and the vertical baffles respectively. The assembly type main structure is reasonable in beam-column connection, convenient to install, high in flexural capacity and suitable for large-span commercial complex buildings.

The invention relates to a vibration-absorbing self-balancing anti-spilling transporting device. The vibration-absorbing self-balancing anti-spilling transporting device comprises a housing, a vibration absorbing spring, a cover plate, a spilling preventing device and a spilling preventing soup box which is used in a matching manner. The spilling preventing device comprises a shake supporting roller and a buffer spring. When the overall device meets shake or sudden speed reduction, the inner bottom slides at the internal surface of a vibration absorbing seat through the shake supporting roller; the buffer spring and the vibration absorbing spring stretch or is compressed to reduce the impact degree and reduce the shake transmitted to the vibration absorbing seat from the corresponding position and direction; besides, the cover plate can be used for making the vibration absorbing spring at the bottom of the vibration absorbing seat only generate stretch and retraction and generate no bending and twisting; and the spilling preventing soup box can further reduce spilling of liquid or powdery materials. The vibration-absorbing self-balancing anti-spilling transporting device provided by the invention solves the problems that in the prior art spilling is prevented by chiefly controlling the inertia of a conveying carrier and adopting a relatively low conveying speed in a manual conveying process, and improves the conveying efficiency and safety of the liquid or powdery materials.

The invention discloses a mini-type acoustical generator and relates to the technical field of electroacoustic products. The mini-type acoustical generator comprises a shell, a vibrating system and a magnetic circuit system, wherein the vibrating system and the magnetic circuit system are contained in the shell. The magnetic circuit system comprises a magnet yoke installed on the shell, and the vibrating system comprises a vibrating diaphragm and a voice coil. A rear sound aperture of the mini-type acoustical generator is formed in the lateral side of the mini-type acoustical generator, the part, corresponding to the rear sound aperture side, of the shell and the magnet yoke are sealed by using a metal sheet, one part of the metal sheet is combined with the magnet yoke in a sealed mode, and the other part of the metal sheet is combined with the shell in a sealed mode. The rear sound aperture is formed in the metal sheet. By means of the mini-type acoustical generator, the technical problem that in the prior art, a mini-type acoustical generator with the rear sound aperture in the lateral side has limitations is solved; in the mini-type acoustical generator, the performance is expanded, the mini-type acoustical generator is simple in assembly, meanwhile, good in water proof performance, long in service life and capable of meeting the requirements for thinning development of portable electronic equipment.

The invention relates to a device for surface cleaning. The device is characterized in that: a bracket is provided with a closed chamber, which is equipped with a high kinetic energy particle inlet channel and a high kinetic energy particle outlet channel, the high kinetic energy particle inlet channel is connected to an accelerator, the high kinetic energy particle outlet channel is connected to a recovery pipe, and the bottom of the bracket is provided with a universal walking mechanism. During use, the high kinetic energy particles are accelerated by the accelerator, the accelerated high kinetic energy particles enter the closed chamber through the inlet channel. The specially designed particle motion trail guide channel and the reasonable axial angle guarantee that the angle between the high kinetic energy particle motion trail and the normal of a clean surface is 40DEG-55DEG C. The inside of the closed chamber is in a partial vacuum state of certain degree. A hairbrush guard board on the one hand can stop overflow of high kinetic energy particle materials and dust, and on the other hand serves as a supplemental inlet of external gas. The airflow can form a reasonable suspension and recovery rate, thus realizing efficient recovery of high kinetic energy particle materials.

This invention concerns a concrete side form system suitable for factory casting or site casting concrete. The side form (10) comprises a substantially rigid longitudinally extending wall. The wall has a first face to define the edge profile of a concrete panel poured onto a casting bed (16) bounded by the wall and a second face opposite the first face having formation to enable the wall to be secured to the casting bed. The wall comprises a longitudinally extending frame having formation along at least one of its edges to removably receive a removable longitudinal insert (13) to provide a shape along an edge of the concrete panel. The removable inserts (12, 13) provide the system with the ability to simply, easily and cost effectively change the edge profile of concrete poured against the side form. Architects can use the invention to specify standard or non standard edge profiles and achieve a much more diverse range of aesthetic finishes to the concrete edges without the cost being prohibitive.

A throw-type urine collector comprises a urine collecting frame with upward and incline opening, an urine receiving room connected with the urine collecting frame, and a flexible neck between the collecting frame and the receiving room, wherein the opening of the frame and the flexible neck can contact female genital organ tightly, with stable operation, while the opening can be added with a water-adsorption cover material to improve feeling and absorb urine to avoid urine leakage. The receiving room is stuffed with macromolecule absorbers, with a cotton tube extended downwards with capillary function to the lower layer, to guide urine completely into the receiving room. The side of the collector is arranged with a movable tape, therefore, when the collector has been used, the frame can be bended and flattened into side edges to be fixed by tape and thrown out. The invention can be used outdoor or travel.

The invention discloses an end-type multi-stage grout stopping plug of a grouting anchor rod and a use method thereof. The end-type multi-stage grout stopping plug comprises a grout stopping plug body, a grout stopping cap and multi-stage grout stopping teeth, wherein the grout stopping cap is positioned at the end part of the grout stopping plug body; and the multi-stage grout stopping teeth are arranged on the outer surface of the grout stopping plug body. The invention has the advantages that in order that the friction force of the grout stopping plug at the end of the hollow grouting anchor rod and a drilling wall is increased, the smooth outer wall of the grout stopping plug is made into the multi-stage type similar to screw threads; and by full utilization of the characteristic of volume shrinkage of a rubber product after subjected to external pressure, the friction force of the grout stopping plug at the end of the hollow grouting anchor rod and the drilling wall is increased, no grout leakage and grout overflowing of the high-pressure hollow grouting anchor at the hole end in a grouting process can be ensured, and the purposes of pressurizing and grouting are achieved.

The invention discloses a well blowout processing device of a geothermal system. An outlet of a grout pipe is arranged at the lower side of a wellhead of the geothermal system. The well blowout processing device further comprises a surface casing for being arranged at the inner wall of the wellhead of the geothermal system and a water-sucking type plunger for sealing with the inner wall of the surface casing, wherein the upper section of the water-sucking type plunger is a cylindrical body, the surface of the lower section of the water-sucking type plunger is a conical surface which is big in upper part and small in lower part, and a through hole is formed in the axial center of the water-sucking type plunger. When a well blowout accident happens, the water-sucking type plunger and the surface casing are connected in a sealing manner to prevent situation from getting worse to pollute the surrounding environment in the construction field and influence the normal life of local residents, and then heavy mud is grouted into the grout pipe till drilling fluid is balanced, and the grout pipe is closed to finish the blowout processing. The well blowout processing device disclosed by the invention has the advantages of convenience for machining, simpleness in use, high processing efficiency, good effect, low cost, strong practicability and suitability for popularization.

The invention discloses a bearing structure for oil cooling of an outer rotor permanent magnet synchronous motor. The bearing structure comprises a bearing seat, a first main bearing, a second main bearing, a first auxiliary bearing and a second auxiliary bearing. Each of the first main bearing and the second main bearing comprises an inner ring, an outer ring, a retainer, two clamp springs and asealing ring. The first main bearing and the second main bearing adopt ball bearings. The first main bearing and the second main bearing are respectively arranged at the two sides of the bearing pedestal. Two sides of the bearing seat are respectively bonded with the inner rings of the first main bearing and the second main bearing. The first auxiliary bearing and the second auxiliary bearing areneedle bearings and are respectively arranged at the two sides. A cavity for the flowing of cooling liquid is formed between the first main bearing and the second main bearing, and a through hole allowing the cooling liquid to flow in and out is formed in the bearing pedestal. According to the technical scheme, the cooling device of the motor is greatly simplified in structure, the cooling efficiency is improved, and the service life of the motor is prolonged.

The present invention discloses a display panel and a preparation method thereof. The display panel comprises: a substrate; a plurality of organic light-emitting modules arranged at the upper surfaceof the substrate; a film package layer arranged at one side, close to the organic light-emitting modules, of the substrate and packaged with organic light-emitting devices, wherein each organic light-emitting module comprises at least one organic layer and at least one inorganic layer which are stacked; and a dam comprising at least one frame-shaped structure, wherein the dam is arranged around the organic layer and attached to one side, close to the organic light-emitting devices, of the substrate so as to flexibly regulate the dam size, the attachment position and the dam quantity accordingto the size of the display panel when the dam is attached to so as to simplify the preparation process of the display panel, reduce the manufacturing device and effectively block the overflow of the organic layer materials in the film package layer after attachment of the dam.

The invention discloses a disposable lunch box forming device. The device comprises a machine frame, a heating section and a forming section, and further comprises a preheating section, an air supplypiece, a hot air collecting piece and a draught fan, the heating section and the forming section are sequentially arranged on the machine frame, and the preheating section is mounted at the front endof the heating section. The air supply piece and the hot air collecting piece are arranged at the two sides of the upper portion of a blister mold of the forming section, the hot air collecting pieceis communicated to an air inlet of the draught fan through an air pipe, an air outlet of the draught fan is communicated to inlet air of the preheating section through an air pipe, and outlet air of the preheating section is communicated to the air supply piece through an air pipe. According to the disposable lunch box forming device and the disposable lunch box processing energy-saving method, hot air of the forming section can be recycled to preheat sheets entering the heating section, energy is saved, and the equipment operation cost is reduced.

The invention discloses a secondary smoke trapping device for a buffering type rotary furnace. The device comprises a smoke collecting pipe provided with a smoke collecting port and a buffering element, wherein the smoke collecting pipe is mechanically connected with the buffering element by an elastic component, and the opening of the smoke collecting pipe is rightly aligned to the opening of the rotary furnace. The device disclosed by the invention has the advantages that the secondary smoke of the rotary furnace is trapped in high efficiency and low consumption.

The invention provides a display device, a display panel and a preparation method thereof. The display panel comprises a substrate and a thin film packaging layer arranged on the substrate, wherein the display panel comprises a display area and a non-display area, and the thin film packaging layer comprises an organic layer and at least one dam. The organic layer covers the display area, the at least one dam is arranged on the non-display area and used for preventing the organic layer from overflowing, and an uneven structure is arranged on the surface of the at least one dam. An uneven structure is arranged on the at least one dam, the adhesion area of the at least one dam and the thin film packaging layer is increased, overflowing of the organic layer is better blocked, packaging failures caused by erosion of water oxygen to electronic elements are further reduced, and then the service life of the display panel is prolonged.

The invention relates to an efficient defrosting device of an air cooler. The device comprises an air outlet side louver, an air outlet side louver connecting rod, an air outlet side connecting rod controller, an air return side louver, an air return side louver connecting rod and an air return side louver connecting rod controller. When the air cooler is in a refrigerating working condition, theair outlet side louver and an air inlet side louver are opened at the same time, and a cold air flow performs a refrigerating cycle on the air inlet side and the air outlet side. When the air cooler is in a defrosting working condition, the air outlet side louver and the air inlet side louver are closed at the same time to fence fins of the air cooler fully. At the moment, hot air for defrosting is limited between air outlet side louver and the air return side louver to flow, so that hot air for defrosting is prevented from overflowing. Thus, the defrosting efficiency of the air cooler is improved and temperature rise in a refrigerator is inhibited. Moreover, problems of frosting, condensation, water dropping and the like of a top surface of the refrigerator are also avoided. Meanwhile, the air outlet side louver in the closed state can be taken as a baffle plate to separate a motor of the air cooler from the fins of the air cooler so as to prevent defrosting water from flowing into the motor, so that the working environment of the motor is protected and the service life of the air cooler is prolonged.

The invention discloses a device arranged at a fully sealed coal cabin access for preventing coal dust from outwards flowing. The device is arranged at the upper part of the fully sealed coal cabin access. The device comprises a water pump, a water conveying pipe, a spray nozzle, electric equipment and a control system. The device sprays water mist from top to bottom to form a water curtain; the outward flowing of coal dust in the cabin can be effectively prevented; no influence is caused on access of vehicles into or out from the coal cabin.

The invention relates to the technical field of polishing, and discloses a sand blasting device. The sand blasting device comprises a housing and a sand outlet pipe. The housing is provided with a sand inlet, a sand blasting port and an air return port, the sand inlet and the sand blasting port are oppositely arranged and located on the same horizontal line, the sand blasting port is provided withdustproof fluff. The sand outlet pipe is connected to the lower side of the housing and communicates with the interior of the housing, the side, facing the sand inlet, of the sand outlet pipe is obliquely arranged downwards, and the included angle between the axis of the sand outlet pipe and the horizontal axis of the housing is alpha which is greater than or equal to 45 degrees and less than orequal to 90 degrees. The sand blasting device can be well attached to the surface of equipment, shortens the manual sand cleaning time, reduces the labor intensity of workers and avoids contaminationto the air environment and the ground.

The invention discloses an antifouling method for dredged mud in construction of water dredging engineering. The method comprises the following steps: (1) sectionally processing colored strip units, wherein positioning anchor rods are arranged on each section of colored strip at intervals, two adjacent positioning anchor rods are respectively arranged on two sides of each colored strip, the bottom ends of the colored strips are tightly fastened and connected with the positioning anchor rods, the top ends of the colored strips are loosely connected with the positioning anchor rods, and floating devices are arranged between the top ends of the colored strips at intervals; (2) inserting the positioning anchor rods into mud at the position which is 200-300m far away from the opening of a mud discharge pipe, so that the plurality of colored strip units are overlapped in a staggered manner, so as to form a fence of a mud-dumping area, and the overlapping length of two adjacent colored strip units is 2-4m. The antifouling method disclosed by the invention is convenient to operate, the labor force is reduced, the top ends of the colored strips can automatically go up and down along with the water level change, the requirements can be met by once placement, the impact force of slurry can be effectively reduced, the slurry is prevented from overflowing, secondary pollution of surrounding water is prevented, and the pollution problem on a water district is not generated.

The invention relates to a cylinder head cover of a diesel engine. The cylinder head cover of the diesel engine comprises a cover body 1, a corrugated side plate 2, perforated bosses 3, a sealing reinforcing rib 4 and a connecting deck 5, wherein steel wire balls 6 fill the perforated bosses 3 and around exhaust pipes, and the circle of sealing reinforcing rib 4 is arranged on the connecting deck 5. The cylinder head cover of the diesel engine provided by the invention has the advantages that since the side plate of the cover body is corrugated, the vibrating energy can be absorbed, the radiating area can be increased, and the effects of noise reduction and heat radiation can be realized; since the sealing reinforcing rib on the connecting deck presses against a sealing gasket on a cylinder head, the sealing effect is enhanced; since the steel wire balls fill around the exhaust pipes, oil mist can be effectively prevented from overflowing.

The invention relates to a wall alkali-resistant coating, which comprises a component A and a component B, wherein the proportion of the component A to the component B is (1 to 1.8) to (1 to 3); the component A is prepared from 10 to 40 parts of water, 0.2 to 0.5 part of preservative, 4 to 6 parts of diethyl ether, 0.2 to 0.3 part of defoaming agent, and 55 to 95 parts of water-based aliphatic amine modified epoxy curing agent; the component A is produced by the following steps of firstly adding appropriate amount of defoaming agent, preservative and diethyl ether into clear water, uniformly dispersing, adding the water-based aliphatic amine modified epoxy curing agent, uniformly dispersing, adding the defoaming agent, and stirring at low speed for defoaming; the component B is non-solvent type modified bisphenol-A epoxy resin. The wall alkali-resistant coating provided by the invention has good permeability and sealability, has excellent resistance to alkali and salt and water resistance when being applied in the surface of cement mortar, has high strength, and can completely prevent alkaline from overflowing; has resistance to alkali and nitrate superior to that of a traditional water-based polymer emulsion alkali-resistant primer. The wall alkali-resistant coating provided by the invention is water-based and environment-friendly without toxity.

The invention relates to a GaN-based LED epitaxial structure and a growth method for improving luminous efficiency. In the LED epitaxial structure, there are a nucleation layer, a buffer layer, an n-type GaN layer, a multi-quantum well light-emitting layer, and a P-type structure on the substrate from bottom to top. The P-type structure is composed of an insertion layer and a P-type GaN layer in sequence. Or P-type GaN layer, insertion layer and P-type GaN layer; the insertion layer is a P-type superlattice of LD / PAlXInYGa1-X-YN / HD, LD is a low-doped P-type AlUInNGa1-N-UN layer, and HD is a high Doped P-type AlZInWGa1-Z-WN layer. The present invention uses the P-type superlattice structure, the low-doped LD part prevents P-type impurities from diffusing to the lower light-emitting region, and the high-doped HD part provides a large number of holes; the combination of low-doped and high-doped can provide a large number of holes In this case, the overflow of holes is blocked. At the same time, the P-type AlInGaN layer can effectively trap holes and improve the lateral expansion of holes while blocking electrons. The GaN-based LED with the P-type structure of the invention can significantly improve the quantum efficiency of the device.

The invention relates to a GaN-based LED epitaxial structure and a growth method of an n-type GaN structure, including a substrate layer, a buffer layer, an n-type structure, a multi-quantum well light-emitting layer and a p-type structure arranged sequentially from bottom to top; The n-type structure includes an n-type GaN layer with a low-doped Si concentration gradient, a Si-doped n-type AlGaN layer, a u-type GaN layer, and a highly-doped Si n-type GaN layer arranged in sequence from bottom to top. The present invention adopts an n-type superlattice structure with a layer of nAlGaN inserted in the middle of a combination of high and low doping, successfully overcomes the method of blindly using high-doped nGaN to reduce the luminous voltage in the prior art, and makes a breakthrough in structural design. Based on growth experience, it was unexpectedly found that high-doped nGaN and low-doped nGaN are used to match the middle nAlGaN layer. This method can increase the electron concentration, thereby increasing the electron mobility and reducing the luminous voltage; at the same time, the growth of the n-type region determines the stability of the entire LED structure, especially parameters such as reverse voltage, antistatic ability and leakage.

The invention discloses an end-type multi-stage grout stopping plug of a grouting anchor rod and a use method thereof. The end-type multi-stage grout stopping plug comprises a grout stopping plug body, a grout stopping cap and multi-stage grout stopping teeth, wherein the grout stopping cap is positioned at the end part of the grout stopping plug body; and the multi-stage grout stopping teeth are arranged on the outer surface of the grout stopping plug body. The invention has the advantages that in order that the friction force of the grout stopping plug at the end of the hollow grouting anchor rod and a drilling wall is increased, the smooth outer wall of the grout stopping plug is made into the multi-stage type similar to screw threads; and by full utilization of the characteristic of volume shrinkage of a rubber product after subjected to external pressure, the friction force of the grout stopping plug at the end of the hollow grouting anchor rod and the drilling wall is increased, no grout leakage and grout overflowing of the high-pressure hollow grouting anchor at the hole end in a grouting process can be ensured, and the purposes of pressurizing and grouting are achieved.

The invention aims to provide a lamp rubber part forming mold. According to the technical scheme of the lamp rubber part forming mold, the lamp rubber part forming mold is composed of a lower mold plate, an upper mold plate, a first insert strip and a second insert strip; the lower mold plate is provided with four lower mold plate positioning holes, a first insert strip clamping station lower groove, a second insert strip clamping station lower groove and two insert strip lower forming grooves; and the upper mold plate is provided with four upper mold plate positioning holes, a first insert strip clamping station upper groove, a second insert strip clamping station upper groove and two insert strip upper forming grooves. The mold is used for forming a connecting piece at the position of anexternal connector of a lamp pipe of a lamp platform, assembling, disassembling, mold closing and demolding are facilitated, and a glue overflowing phenomenon is prevented; the mold is distinct in structural concept and easy to operate; and by means of the structural design of inserting or pulling for mold closing, assembling of the mold and demolding separation of a finished product are more facilitated, the working efficiency is improved, the sealing performance is higher, the glue overflowing phenomenon in the injection molding process cannot be caused, the lamp rubber part forming mold ismore environmental-friendly and practical, and the machining quality of the product is improved.

The invention discloses an oil-cooled bearing structure for an outer rotor permanent magnet synchronous motor, which comprises a bearing seat, a first main bearing, a second main bearing, a first auxiliary bearing and a second auxiliary bearing. Both the first main bearing and the second main bearing include an inner ring, an outer ring, a cage, two circlips and a sealing ring; the first main bearing and the second main bearing adopt ball bearings; the first main bearing and the second main bearing They are respectively arranged on both sides of the bearing seat; the two sides of the bearing seat are respectively bonded to the inner rings of the first main bearing and the second main bearing; side. A cavity for the circulation of the cooling liquid is formed between the first main bearing and the second main bearing, and a through hole for the inflow and outflow of the cooling liquid is provided on the bearing seat. The present invention adopts the above technical solution, which greatly simplifies the structure of the cooling device of the motor, improves the cooling efficiency, and prolongs the service life of the motor.

The invention provides a display device, a display panel and a preparation method thereof. The display panel includes: a substrate and a thin film encapsulation layer arranged on the substrate, wherein the display panel includes a display area and a non-display area, and the thin film encapsulation layer includes an organic layer and at least one dam, the organic layer covers the display area, at least one dam is arranged on the non-display area for blocking the overflow of the organic layer, and the surface of at least one dam has an uneven structure. In the embodiment of the present invention, by providing an uneven structure on at least one dam, the adhesion area between at least one dam and the thin film encapsulation layer is increased, the overflow of the organic layer is better blocked, and the damage caused by the erosion of water and oxygen on electronic components is further reduced. The encapsulation fails, thereby increasing the service life of the display panel.

The invention relates to an automatic baffle pressing type steel belt cooling material conveyor. The conveyor is characterized in that an automatic baffle pressing system is additionally arranged at the discharging end of an existing material conveyor, wherein the automatic baffle pressing system comprises left and right automatic baffle pressing devices which have an automatic gap compensation function and can prevent particle products from leaking to the two sides of a steel belt through a gap, a baffle inter-connecting strut beam with a baffle limiting function reinforcing function and an anti-overflow cover plate having a function of preventing outward splashing of particle products during advancing and falling of the particle products. It is ensured that the conditions of leftward andrightward leaking and forward splashing of particle products and pollution caused by dust to environment are avoided from the structure, the recovery rate of the products is improved, a large amountof resource waste is avoided, the workload and the use cost of daily maintenance are reduced, the structure is simple, scientific and reasonable, the work is continuous and reliable, the stability isstrong, the use is convenient, and the using requirements for continuous, reliable, efficient, low-cost operation and environmental protection of an automatic flow operation system can be fully met, and practicability is quite high.

The invention provides a filter net device for civil engineering. The device comprises an electric vibration frame, wherein a filter net is arranged in the electric vibration frame, the upper edge ofthe electric vibration frame is provided with a blocking edge, and the blocking edge is provided with a movable section. According to the device, the arranged blocking edge can prevent gravel from overflowing, and through the movable section, objects on the filter net can conveniently poured out.

The invention discloses a secondary smoke trapping device for a buffering type rotary furnace. The device comprises a smoke collecting pipe provided with a smoke collecting port and a buffering element, wherein the smoke collecting pipe is mechanically connected with the buffering element by an elastic component, and the opening of the smoke collecting pipe is rightly aligned to the opening of the rotary furnace. The device disclosed by the invention has the advantages that the secondary smoke of the rotary furnace is trapped in high efficiency and low consumption.