488results about How to "Realize self-cleaning" patented technology

The invention provides a swing vibrator type piezoelectric micropump and a driving and manufacturing method thereof. The piezoelectric micropump comprises a supporting structure, a first through-flow layer, a second through-flow layer and an actuator, wherein the first through-flow layer and the second through-flow layer are arranged at the two ends of the supporting structure, and the actuator is arranged in the supporting structure. The actuator comprises two actuating units which are arranged in parallel. The actuation unit includes a substrate and a vibration element. The vibration element is fixed on the substrate; the two actuating units are of the parallel and opposite cantilever structures on the opposite sides, center stress similar to that of a conventional annular actuator structure cannot be generated in the swing gas pumping process of the two actuating units, and the service life of the piezoelectric micropump can be prolonged. Meanwhile, when different excitation signals are input into the two actuating units, the two actuating units can generate asynchronous vibration, so that reverse airflow with certain continuity is generated in the piezoelectric micropump, the effect of regularly self-cleaning the air inlet is achieved, and long-time continuous work of the piezoelectric micropump in a complex environment is achieved.

The invention provides an artificial groundwater recharge system and method based on roof rainwater collection, and relates to the technical field of groundwater recharge. The system comprises a rainwater recycling unit, a rainwater purifying unit and a rainwater recharging unit which are connected in sequence, and the rainwater recycling unit is used for collecting roof rainwater; the rainwater purifying unit is used for purifying the collected rainwater, and the rainwater recharging unit is used for inputting the purified rainwater into an underground aquifer. A set of feasible manual supply and recharge technical system is constructed, and various aspects of manual supply are organically integrated and connected, so that the water quality of recharged rainwater can be improved, the underground water supply quality is effectively ensured, the supply efficiency of a manual supply project can be maintained or improved, and the blockage risk is reduced; the time for keeping high-efficiency recharge of manual supply is prolonged, and then the recharge water amount is increased.

The invention relates to the technical field of dust removal and desulfurization equipment, and discloses environment-friendly dust removal and desulfurization equipment which comprises an outer barrel, and a separation barrel is fixedly mounted at the bottom end of the interior of the outer barrel. According to the environment-friendly dust removal and desulfurization equipment, the separation barrel is arranged at the bottom end of the interior of the outer barrel, and the interior of the outer barrel is divided into an inner part and an outer part through the separation barrel; the interior is an impurity separation and collection area, the exterior is a clean circulating liquid flowing area, a stirring wheel at the bottom rotates to drive liquid and impurities to rotate together to generate centrifugal force, and under the action of the centrifugal force, the liquid and the impurities in the interior are driven to rotate together and are attached to the interior of a filtering ring net on the side face; in this way, impurities are separated out, liquid can flow to the outside of the separation barrel through the filtering ring net to be used for follow-up circular flow, the cleanliness of the recycled liquid can be improved, and the service life of the circulating pump can be prolonged.

A safe optical cable cross-connecting box provided by the present invention comprises a base, the upper part of the base is rotatably connected with a heat dissipation cylinder, the heat dissipation cylinder is fixedly sleeved with an installation column, and the circumferential side wall of the installation column is provided with a plurality of welding disc grooves from top to bottom and is also provided with a plurality of optical splitter grooves. The inner side of the welding disc groove and the inner side of the optical splitter groove are both communicated with the heat dissipation barrel through heat extraction openings, the periphery of the installation column is covered with a liftable protection barrel cover, a heat dissipation opening communicated with the heat dissipation barrel is formed in the top of the protection barrel cover, a heat dissipation fan is installed in the heat dissipation opening, and an air suction cavity communicated with the heat dissipation barrel is formed in the base. An annular groove is formed in the circumferential cavity wall of the air suction cavity. According to the cross-connecting box, the cylindrical arrangement is adopted, the welding disc grooves and the optical splitter grooves are reasonably distributed in the circumferential direction, the occupied area can be reduced, centralized heat dissipation can be achieved, the heat dissipation effect is improved, water vapor and dust sucked into air can be adsorbed, and safety is improved.

The invention provides a system and method for recharging underground water by coupling urban rain and flood resources, and belongs to the technical field of underground water recharging. The system comprises a roof rainwater recycling mechanism, a road surface rainwater recycling mechanism, a regulating reservoir, a rainwater purifying mechanism, a rainwater recharging mechanism and the like. Coupling collection of road surface rainwater and roof rainwater is achieved, the roof rainwater recycling mechanism and the road surface rainwater recycling mechanism both have the flow discarding function, so that the collected rainwater is relatively clean, the quality of recharged rainwater can be improved through further treatment of the rainwater purification mechanism, and the groundwater supply quality is effectively guaranteed. According to the system, the combination effect of all units is good, comprehensive rainwater collection and more scientific utilization of collected rainwater can be achieved, and a new thought is provided for rainwater and flood resource reutilization.

According to the air conditioner partition self-cleaning control method and the air conditioner, the windward side of an indoor heat exchanger is divided into a plurality of to-be-cleaned areas, and a wind shielding structure is used for shielding or exposing any to-be-cleaned area; in the subarea self-cleaning mode, executing m times of micro-frost rinsing process for any to-be-cleaned area; the micro-frost rinsing process comprises the following steps that refrigeration operation is conducted, a compressor operates, an outer fan rotates, an inner fan rotates, the opening degree of an electronic expansion valve is the set frosting opening degree, a wind shielding structure acts to shield a to-be-cleaned area, and the to-be-cleaned area starts to frost; when the frosting ending condition is met, the opening degree of the electronic expansion valve is increased to the set defrosting opening degree or / and the outer fan stops rotating or / and the air blocking structure acts to expose the to-be-cleaned area, and defrosting is started in the to-be-cleaned area; when the defrosting ending condition is met, it is judged that defrosting of the to-be-cleaned area is completed; the technical problem that in the prior art, the refrigeration requirement of a user cannot be met during self-cleaning of an indoor heat exchanger is solved.

The invention discloses a sand mixing machine with adjustable sand output flow rate, which relates to the field of sand mixing, and comprises a bottom plate, the top of the bottom plate is evenly provided with supporting feet, the top of the supporting feet is fixedly connected with a placing platform, the top of the placing platform is fixedly connected with a sand mixing bin, the inner wall of the sand mixing bin is rotatably connected with a sand grinding mechanism, the top of the sand mixing bin is fixedly connected with a lower slide plate, the bottom of the sand mixing bin is fixedly connected with the sand output mechanism, the outer surface of the sand mixing bin is fixedly connected with an auxiliary mechanism, the end of the bottom plate close to the sand output mechanism is fixedly connected with a sand collecting plate, the top of the bottom plate is fixedly connected with a main motor, the output end of the main motor is fixedly connected with a speed changing device, after the sand and stone raw materials are poured into the sand mixing bin, the main motor will drive the sand grinding mechanism to rotate through the speed changing device, and then mix the raw materials, and the rotation will stop after mixing for a period of time, at which time the auxiliary mechanism will turn over the raw materials, and finally the raw materials will flow into the sand collecting plate through sand output.

The invention discloses a super-hydrophobic self-repairing polyurethane film for photovoltaics and a preparation method of the super-hydrophobic self-repairing polyurethane film. The super-hydrophobic self-repairing polyurethane film is prepared from the following components in parts by weight: polyether polyol, isocyanate, a catalyst, a solvent, a self-repairing auxiliary agent, a chain extender and super-hydrophobic nanoparticles, the super-hydrophobic nano particles are fluorine-silicon polymer nano particles which are modified hydrophobic nano particles obtained by hydrolyzing two or more organic silicon and then introducing a C-F bond through copolycondensation to realize fluorination modification; the service life of the composite material is prolonged, the durability of the composite material is improved, and the material can be self-healed after being damaged by the outside; on the basis of self-repairing, hydrophobic nanoparticles are added to realize a super-hydrophobic surface; the transparent polyurethane film material for the photovoltaic power generation panel can be adhered through electrostatic adsorption or other adhesives, so that the film material is loaded on the photovoltaic panel, the photovoltaic panel is protected, and the photovoltaic panel is prevented from being damaged due to external environment pollution.

The utility model relates to the technical field of switches, in particular to a dustproof brushless switch, which comprises a shell used for protecting the outside of the switch; the electrical element is provided with a pressing assembly, and the pressing assembly is used for triggering a switch action in the electrical element; the corrugated sleeve is located between the pressing assembly and the shell and used for preventing dust between the pressing assembly and the shell; the spring is located in the corrugated sleeve and used for resetting the pressing assembly; and the mounting plate is located in the shell, and a vibration isolation pad is mounted on the mounting plate. Compared with the prior art, the switch has the advantages that the vibration assembly is arranged, the shell is automatically vibrated through linkage of movement of switch pressing operation, self-cleaning of dust on the surface of the shell is achieved, the sealing gasket and the corrugated sleeve are matched for use, dust is prevented from entering the shell, the problems of poor contact, resistance increase and the like caused by dust accumulation are effectively avoided, and the service life of the switch is prolonged. Therefore, the long-term operation reliability and stability of the switch are remarkably improved, and the failure rate caused by dust is reduced.

The invention belongs to the technical field of welding, and particularly relates to an air valve production welding device which comprises a welding table, a frame body is fixedly connected to the middle of the rear side of the upper end face of the welding table, two third sliding rods are slidably connected to the middle of the frame body, and welding guns are fixedly connected to the front ends of the third sliding rods. Adjusting plates are connected to the middles of the left side and the right side of the upper end face of the welding table in a sliding mode, and a tight attaching type splash-proof slag knocking mechanism used for knocking off welding slag at a weld joint is arranged on the welding table. Welding slag on the periphery of a pipeline welding seam is knocked off in a knocking mode through a tight fitting type splash-proof slag knocking mechanism, in the slag knocking process, a plurality of first abutting plates, second abutting plates and third abutting plates can be driven to move in the radial direction at the same time, a sponge ring abuts against the surface of a pipeline in an extrusion mode, and therefore the welding slag is knocked off. And under the action of the two sponge rings, the welding seam is separated from other positions of the pipeline, so that welding slag is effectively prevented from splashing to the surface area of the pipeline outside the welding seam in the knockout process.

The invention belongs to the technical field of photovoltaic tempered glass, and particularly relates to photovoltaic tempered glass and a preparation method thereof.The photovoltaic tempered glass sequentially comprises tempered glass and a protective coating from bottom to top; the protective coating is prepared from the following raw materials in parts by mass: 20 to 45 parts of fluorine-containing polysiloxane, 10 to 18 parts of tetraethoxysilane, 10 to 20 parts of silicon dioxide / tetrapod-like zinc oxide whisker / alkyl phosphate, 10 to 20 parts of titanium dioxide / polymer molecular brush, 0.5 to 1 part of catalyst and 80 to 120 parts of solvent; the fluorine-containing polysiloxane is obtained by carrying out a reaction on octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane and trifluoropropyl methyl cyclotrisiloxane. The photovoltaic tempered glass provided by the invention has super-hydrophobicity, excellent light transmittance, high-temperature and high-humidity resistance, high and low temperature impact resistance and ultraviolet resistance.

The utility model discloses a marine cast steel gate valve which comprises a gate valve body, the bottom end of the gate valve body is fixedly connected with a T-shaped pipe, the left end of the T-shaped pipe is fixedly connected with a concentric-square-shaped pipe, the other side of the concentric-square-shaped pipe is fixedly connected with a connecting pipe, and two filtering pieces are installed on the concentric-square-shaped pipe. And the bottom of the concentric-square-shaped pipe is fixedly connected with two blow-down valves. According to the utility model, the filtering piece sends out an electric signal to an external control end to prompt cleaning, at the moment, the first electromagnetic valve and the second electromagnetic valve of the other flow channel are firstly opened, then the first electromagnetic valve and the second electromagnetic valve of the current flow channel are closed, and the backflow piece communicated with the current flow channel is opened; at the moment, the water flow filtered by the backflow piece reversely flows to the filtering piece in the current closed flow channel for back flushing, and a blow-down valve at the bottom is opened to realize back flushing, so that the device has the advantages that the valve body is protected, the filtering structure can be self-cleaned, and normal operation of equipment is ensured while cleaning is realized.

The invention relates to the technical field of steel structure welding, and discloses a steel structure butt welding adjusting device which comprises a workbench, the front portion of the workbench is fixedly connected with a welding mechanical arm, the inner wall of the right portion of the workbench is rotationally connected with a first reciprocating lead screw, and the circumferential face of the first reciprocating lead screw is movably connected with a clamping plate. A connecting plate is fixedly connected to the rear portion of the workbench, an electric telescopic rod is fixedly connected to the front portion of the connecting plate, and a clamping mechanism is arranged at the top of the workbench. Two steel pipes are supported through a movable fixing plate and rolling wheels, it is guaranteed that the two steel pipes cannot deviate during butt welding, and the welding quality of the device is improved; and meanwhile, when the three-jaw chuck clamps the steel pipe from the inner pipe, the auxiliary fixing plate can stretch out and make contact with the inner wall of the steel pipe, so that the clamping area can be increased, the steel pipe clamping stability is further improved, and the steel pipe is prevented from deviating in the welding process.

The invention relates to the technical field of sampling inspection equipment, in particular to a powdery cosmetic sampling inspection device which comprises a conveying pipeline, and two fixing boxes are bilaterally symmetrically mounted at the top of the conveying pipeline. The two overturning material taking mechanisms are in linkage through the combined driving assembly, reciprocating driving assemblies in the overturning material taking mechanisms reciprocate to drive the self-cleaning mechanisms to rotate in a reciprocating mode, and therefore the upper surface of the material leaking hopper is scraped in a reciprocating mode through a material scraping plate, the material taking frequency is reduced, and the material taking efficiency is improved. According to the automatic labeling device for the sampling bottles, self-cleaning of the hopper is facilitated, the two sampling bottles are synchronously clamped and lifted through the clamping lifting mechanism, synchronous labeling of the two sampling bottles is achieved through extrusion of the pressurization driving assembly on the labeling assembly, and integrated linkage between the clamping lifting mechanism and the labeling mechanism is achieved.

The utility model discloses a screw conveyor, and relates to the field of material conveying. A motor speed reducer; a feeding assembly; a discharging device; the box body is internally provided with a box body; a first screw rod; a screw rod II; blades I are further arranged on one side of the screw rod I and one side of the screw rod II, are arranged in a left-handed manner and are meshed with each other; a transmission assembly; the motor reducer provides power and drives the first screw rod to rotate, the first screw rod moves to drive the transmission assembly, the power is transmitted to drive the second screw rod to rotate, the feeding assembly guides materials to enter the channel, meanwhile, the first blade arranged in a left-handed mode pushes the materials to the discharging device, and the first screw rod and the second screw rod are arranged in the box body. When materials are conveyed through the screw rods, caked materials are smashed through the meshed screw rods, the materials with large viscosity can be automatically cleaned through meshing of the blades, and the situation that the materials are stacked and blocked in the conveying process of the spiral conveyor is avoided.

The invention relates to the field of monitoring systems, in particular to a three-dimensional monitoring system of a railway substation. The invention provides a three-dimensional monitoring system for a railway substation. The three-dimensional monitoring system comprises a plurality of self-cleaning monitoring devices and a monitoring platform which are arranged at all positions of the substation, the self-cleaning monitoring device is in communication connection with the monitoring platform; the monitoring platform comprises a BIM three-dimensional display module, a monitoring data projection module, a virtual camera module and a monitoring data detection module. The problems that background video display needs a plurality of windows, each window needs to correspond to one camera, an area needing to be observed and known cannot be visually and timely found, adaptability is poor, and if dust and other impurities are accumulated on a lens of the camera, videos are not clear, and monitoring is affected are solved. According to the method, the conditions of a plurality of areas can be observed on the BIM model at the same time, self-cleaning of the camera can be realized, the quality of a monitoring video is ensured, and the monitoring safety is improved.

The invention relates to the technical field of household appliances, and discloses a control method of cleaning equipment, the cleaning equipment comprises a rolling brush assembly, the rolling brush assembly comprises a rolling brush and a rolling brush cover covering the rolling brush, the rolling brush cover is arranged to float up and down relative to the rolling brush, and the control method comprises the following steps: starting a self-cleaning mode of the cleaning equipment; the cleaning equipment is controlled to conduct self-cleaning on the rolling brush; after the rolling brush completes self-cleaning, the rolling brush cover is controlled to float to the position in contact with the bristles of the rolling brush, and the rolling brush is used for self-cleaning the rolling brush cover through the bristles in the rotating process of the rolling brush. According to the control method of the cleaning equipment, when the cleaning equipment conducts self-cleaning, the rolling brush cover can be driven to make contact with and be attached to the rolling brush, self-cleaning of dirt on the rolling brush cover is achieved, and therefore the technical problems that the cleaning difficulty of the inner wall of the rolling brush cover is large, and the rolling brush cover needs to be cleaned in a manner that the rolling brush cover needs to be detached are solved.

The present invention provides a fully automatic edge grinding machine for rearview mirror lenses, comprising: a processing water tank, which is provided with an inclined surface inside; a suction cup motor assembly, which is arranged in the processing water tank and is used to fix the lens and drive it to rotate; a grinding assembly, which is arranged above the suction cup motor assembly and is used to grind the lens; a material transporting assembly, which is arranged above the suction cup motor assembly and is used to transport the lens; a water spraying pipe is also arranged on the grinding assembly, and the water spraying pipe is used to spray water on the lens; a waste water outlet is also arranged at the bottom of the processing water tank; the lens is placed on the suction cup motor assembly through the material transporting assembly, so as to complete the fixing of the lens; the lens is ground through the grinding assembly, and water is sprayed on the grinding position through the water spraying pipe, so that the ground dust is mixed with the water, thereby reducing dust; at the same time, there is no need for operators to load and unload materials, the degree of automation is high, and the harm of dust to operators is reduced.

The invention discloses an anhydrous formic acid preparation process and a preparation device, and relates to the technical field of anhydrous formic acid preparation, and the preparation device comprises a reboiler, a condenser, a liquid collection part, a cleaning part and a wire mesh demister. The invention further discloses an anhydrous formic acid preparation process which comprises the following steps: feeding raw materials, purifying, hydrolyzing, separating, dehydrating and collecting. The liquid is heated by arranging the reboiler, the heated liquid forms steam which rises upwards and passes through the cooler, one part of the steam continuously rises upwards and passes through the wire mesh demister, liquid drops in the steam are separated, the other part of the liquid is liquefied and flows back to the reboiler, and after the liquid drops in the steam are separated by the wire mesh demister, the liquid drops in the steam are separated by the wire mesh demister. The liquid drops flow into the liquid collecting tank; when the pipeline in the condenser is blocked, the cleaning part is utilized to dredge the pipeline of the condenser, the dredged impurities are cleaned into the liquid collecting part, and the pipeline in the condenser is cleaned in a non-stop state, so that the working efficiency is improved.

The invention relates to the technical field of fan cabins, and provides a wind driven generator cabin structure capable of preventing wind sand invasion, which comprises a cabin cover, a bottom cabin is arranged below the cabin cover, the bottom cabin is provided with a ventilation pipe communicated with the cabin cover, and a filtering assembly is arranged in the ventilation pipe; the filtering assembly comprises a net-shaped filtering belt, a first belt wheel and a second belt wheel, the net-shaped filtering belt is connected with the first belt wheel and the second belt wheel in a winding mode, and the net-shaped filtering belt is matched with the inner diameter of the ventilation pipe for shielding; the wind-driven impeller is arranged outside the ventilation pipe and coaxially connected with the first belt wheel, and the wind-driven impeller rotates to drive the first belt wheel and the net-shaped filter belt to rotate circularly; the ventilating pipe is externally connected with a sand discharging pipe with a downward pipe opening, and the pipe opening of the sand discharging pipe is close to the lower end of the net-shaped filtering belt. Self-cleaning of the filter screen can be achieved, normal ventilation and filtering effects are guaranteed, and the phenomenon of filtering blockage is avoided.

The invention belongs to the technical field of plant cultivation and seedling raising, and particularly relates to a sand plant cultivation and seedling raising device which comprises a greenhouse body and a seedling raising bed, a U-shaped water receiving tank is fixedly mounted at the top of the outer side wall of the greenhouse body, and the bottom of the U-shaped water receiving tank is communicated with a water leakage pipe; a self-cleaning rainwater rough filtration mechanism is fixedly mounted on the outer side wall of the greenhouse main body, and a water and fertilizer integrated irrigation mechanism is fixedly arranged in the greenhouse main body; through an efficient rainwater collecting and filtering system and water and fertilizer integrated control, the utilization efficiency of water resources and fertilizers is improved, the self-cleaning function is achieved, blockage of a coarse filter screen is avoided, it is ensured that the rainwater collecting efficiency is stable, regular cleaning by personnel is not needed, and the labor cost is saved; extra energy consumption is not needed, the energy consumption is reduced, automatic mixing of the fertilizer and water can be realized, and the water and fertilizer integration efficiency is improved.

The invention relates to the technical field of laser welding equipment, and discloses a galvanized sheet laser welding device and method.The galvanized sheet laser welding device comprises a workbench and a welding gun, and the welding gun is movably installed on the workbench through a motion control mechanism. During use, the heights, the horizontal positions and the welding angles of the welding gun and the polishing abrasive paper are adjusted, the welding gun and the polishing abrasive paper are driven by the electric sliding rail to move synchronously, the external corner position of a to-be-welded part is polished by the polishing abrasive paper in the moving process, and after welding is finished, the polishing abrasive paper and the cleaning abrasive paper are driven by the turnover mechanism to conduct position exchange. And in the reset process, the welding seam is cleaned, surface impurities are removed, in the lifting process of the rectangular plate, a cleaning roller brush can be driven to rotate through the arrangement of a cleaning mechanism, so that polishing abrasive paper or cleaning abrasive paper attached to the cleaning roller brush is cleaned, surface metal chippings are removed, and the better polishing and cleaning effects are achieved in the subsequent use process.

The invention relates to the technical field of storage tank safety devices, and discloses a storage tank breather valve which comprises a valve body, a pressure cavity is defined by the upper portion of an inner cavity of the valve body through a pressure end valve hole, a vacuum cavity is defined by the lower portion of the inner cavity of the valve body through a partition plate and a vacuum end valve hole, the lower end of the valve body is an air inlet, and a first sealing structure is arranged on the pressure end valve hole. A first sealing structure is arranged on the vacuum end valve hole, a second sealing structure is arranged on the vacuum end valve hole, each of the first sealing structure and the second sealing structure comprises a valve seat, a valve disc, a sealing membrane and a membrane fixing circular plate, more than two annular grooves are formed in the lower surface of the valve disc, and the sealing membrane is arranged on the lower surface of the valve disc and covers the annular grooves; the membrane fixing circular plate is arranged in the middle of the lower surface of the valve disc and used for pressing the membrane sealing piece, the valve seat is provided with more than two sealing pointed cones, and the sealing pointed cones and the annular grooves are arranged correspondingly. According to the storage tank breather valve, complete sealing can be achieved, and the zero-leakage sealing effect of the breather valve is achieved.

The utility model discloses a filtering mechanism and a purification device, and relates to the technical field of wastewater purification. The device comprises a filter box, a connecting pipe and a water outlet pipe are communicated with the filter box, a valve is arranged on the connecting pipe, a filter cartridge, a brush roller and a spiral conveying rod are rotationally arranged in the filter box, the brush roller is in rolling lap joint with the inner wall of the filter cartridge, and a driving part which acts on the filter cartridge and drives the filter cartridge to rotate is arranged in the filter box; and a collecting cylinder corresponding to the brush roller is arranged in the filter box. When the industrial wastewater treatment device is used, separation of industrial wastewater and solid substances is achieved through the rotating filter cylinder, the solid substances left on the inner wall of the filter cylinder are cleaned through the rotating brush roller, the cleaned solid substances fall into the collecting cylinder, and the solid substances are conveyed through the rotating spiral conveying rod; and solid substances are discharged from the discharge port, so that the filter cartridge is self-cleaned, and the filter cartridge is prevented from being blocked.

The utility model relates to the field of air purification, and particularly discloses a high-flow low-pressure-difference small-size self-cleaning air filter which comprises a shell, a plate type filter element, a sealing element, a controller, a pressure difference switch, a bearing seat, a reciprocating screw rod, a chain wheel unit, a strip-shaped nozzle, an energy storage unit and a pressure guide hose, the two plate type filter elements are fixedly connected with the shell respectively, the two bearing seats are fixedly connected with the shell respectively, the two ends of the reciprocating screw rod are embedded into the corresponding bearing seats respectively, the two ends of the pressure guide hose are communicated with the strip-shaped nozzle and the output end of the energy storage unit respectively, the controller is fixedly connected with the shell, and the differential pressure switch is fixedly connected with the shell. And each group of sealing elements are respectively arranged on the peripheral side of the corresponding plate type filter element. The air filter element can be self-cleaned in the running process of equipment, and the air filter element has the advantages of being smaller in size, larger in air inlet amount, lower in air inlet pressure loss, higher in filtering precision and better in automation degree.