429 results about "Double filtration" patented technology

The invention relates to the technical field of environment monitoring instruments, and discloses a multi-gas detection mine environment monitoring instrument, which comprises a gas extraction type composite gas monitoring instrument, and further comprises a protection box arranged outside the gas extraction type composite gas monitoring instrument, used for protecting the gas extraction type composite gas monitoring instrument and made of austenitic stainless steel, the probe is arranged at the top of the air exhaust type composite gas monitor, the fixed pipe is communicated with the top of the protection box, the top of the probe is located in the fixed pipe, the guide pipe is connected with the top of the fixed pipe through a flange, and the air exhaust pipe is connected with the other end of the guide pipe through a flange. Through double filtration of the dustproof net and the dust-sticking paper, large-particle dust is intercepted by the dustproof net, fine dust is adsorbed by the dust-sticking paper on the inner wall of the circular truncated cone body, and dust accumulated in a pipeline is discharged through a gap between a baffle and a mounting sleeve through regular blowing of an air blowing pump of the dust removal assembly, so that the dust is prevented from adhering to a probe to block an air path; and the monitoring data accuracy is improved.

The invention provides slaughtering sewage treatment equipment. The slaughtering sewage treatment equipment comprises a filtering device, an oil removing device and an integrated treatment device which are sequentially arranged in the flowing direction of sewage, the filtering device is used for performing at least two-stage filtration on the sewage, removing particulate impurities in the sewage and cleaning a filtering part; the oil removal device is used for separating upper-layer grease in the sewage; the integrated treatment device is used for carrying out biochemical treatment on the sewage subjected to slag and oil removal; the slaughter sewage treatment device can perform double filtration treatment on slaughter sewage and clean a filtering part, so that impurities are effectively filtered and separated, and the impurities entering downstream equipment are reduced; and the grease can be separated independently, so that the separation quality is improved, the grease entering a downstream treatment link is effectively reduced, and blockage or damage to subsequent equipment is prevented.

The invention discloses a carbon emission metering device for environmental monitoring, and relates to the technical field of gas monitoring equipment. A fixing ring is fixedly arranged on the upper side of the interior of a filtering shell; the lower side of the fixing ring is open, and a rotating groove is formed in the right side of the fixing ring. The movable filter plate is arranged on the right side of the fixed ring in a contact mode, and a rotating ring is arranged on the left side of the movable filter plate and rotationally arranged in the corresponding rotating groove; the positioning filter plate is in contact with the left side of the fixing ring; the two supporting blocks are fixedly arranged on the inner walls of the left side and the right side of the filtering shell correspondingly, and the supporting blocks are arranged on the lower side of the air inlet pipe. The first dust brushing assembly is arranged between the movable filter plate and the adjacent supporting block. The second dust brushing assembly is arranged between the positioning filter plate and the adjacent supporting block. Double filtering operation is carried out on gas, filtered impurities are cleaned, and the filter screen is prevented from being blocked by the impurities, so that the quality of the gas is improved.

The internal polishing machine comprises a driving mechanism, a polishing mechanism and a powdered scrap recycling mechanism, one output end of the driving mechanism is connected with the polishing mechanism, the powdered scrap recycling mechanism is connected with the other end of the driving mechanism, and a plurality of auxiliary damping supporting mechanisms which are annularly distributed are arranged on the circumferential portion of the driving mechanism; and a plurality of polishing mechanisms can be spliced in sequence. The stainless steel pipe polishing device has the beneficial effects that vibration generated during operation of the driving mechanism can be effectively reduced through the arrangement of the auxiliary damping supporting mechanism, the stability and polishing precision of the device are improved, the multiple polishing mechanisms can be spliced in sequence, the polishing requirements of stainless steel pipes with different lengths can be met, and meanwhile through the structural design of the polishing frame, the polishing efficiency is improved. According to the stainless steel pipe polishing device, the polishing block can be adjusted in a self-adaptive mode according to the inner diameter of a stainless steel pipe, the universality of the device is improved, powder scraps generated in the polishing process can be recycled in time through the powder scrap recycling mechanism, the powder scrap recycling efficiency is improved through double filtration of the screen and the filter bag, environmental pollution is reduced, and the health of operators is guaranteed.

The utility model relates to the technical field of water treatment, and discloses a bypass filter of a clean circulating water system, which comprises a main circulating pipe, an auxiliary branch pipe is fixedly connected to the outer surface of the main circulating pipe, a water inlet throttle valve is arranged in the auxiliary branch pipe, and an auxiliary circulating pipe is fixedly connected to the lower surface of the auxiliary branch pipe. Through the design of sliding connection, when the filter screens need to be cleaned or replaced, an operator can easily take out the primary active filter screen and the secondary active filter screen to be cleaned or replaced only by sliding the first clamping block and connecting the supporting rods, a double filtering mechanism is adopted, various impurities in water can be effectively removed, the water quality is remarkably improved, and the service life of the filter screen is prolonged. The filter screen adopts the design of quick disassembly and assembly, the maintenance process is simplified, so that the working efficiency and the overall reliability of the filtering system are improved, in addition, by finely adjusting a water inlet throttle valve and a water outlet throttle valve, the system saves water to the maximum extent while ensuring efficient filtering, and the requirements of energy conservation and environmental protection are completely met.

The present application relates to the technical field of vehicle cleaning equipment, in particular to a transport vehicle cleaning equipment, which comprises a cleaning room and a ground platform, the ground platform is arranged below the cleaning room, the ground platform comprises a water pool, a collecting pool, a plurality of units arranged side by side and a motor, the collecting pool is arranged in the water pool, the unit comprises a collecting hopper, a supporting plate, an electromagnet, a transmission shaft, a first sleeve and a first annular filter screen, double filtration is realized through the first annular filter screen and the second annular filter screen, so that the impurities can be prevented from entering the sewer pipe to cause pipe blockage, the water flow and the impurities are branched to facilitate processing, in addition, the unit has a filter screen cleaning function, after the vehicle is cleaned, the first annular filter screen and the second annular filter screen can clean the impurities blocked by the filter screen, so that the filter screen can be prevented from being blocked by the impurities and being disabled.

The invention discloses an anti-abrasion structure for a piston ring of a reciprocating gas compressor, belongs to the technical field of gas compressors, and aims to solve the technical problems that the piston ring of the existing reciprocating gas compressor is easy to abrade, uneven in lubrication, poor in air inlet filtering effect and insufficient in transmission stability. According to the technical scheme, the air compressor is characterized by comprising an air storage tank, a protective shell, a mounting sleeve, a sealing plate, a connector, a rotating circular plate, a driven shaft, a compression assembly, a driving assembly, an air inlet cylinder and a filtering assembly and further comprising an air inlet connector and a connecting pipe; an L-shaped plate and a piston plate are arranged on the side portion of the piston ring and matched with an oil groove and a permeation hole to achieve precise lubrication, the filtering assembly adopts a conical filtering net and a circular filtering cylinder to conduct double filtering and is convenient to disassemble, assemble and clean, the driving assembly is matched with a synchronizing wheel through a servo motor for transmission to guarantee stable operation, and compressed gas is fed into a gas storage tank through a gas inlet connector after being gathered through a connecting pipe.

The utility model relates to the technical field of workshop fresh air, in particular to an air filtering device of a workshop fresh air system, which comprises a connecting pipe, a shell and an air filtering cylinder, the connecting pipe is used for connecting an air inlet of the fresh air system, the end part of the connecting pipe is inserted into the shell, an air inlet is arranged on the side wall of the shell opposite to the connecting pipe, and the air filtering cylinder is arranged in the shell. The connecting pipe in the shell is sleeved with an air filtering cylinder, the air filtering cylinder is used for filtering air, a plurality of corrugated plates in the vertical direction are arranged in the position, at the air inlet, of the shell at intervals, channels allowing the air to pass through are formed between the corrugated plates, and a water inlet pipe is arranged at the top, over the corrugated plates, of the shell; a water outlet pipe is arranged at the bottom of the shell. According to the air filtering device of the workshop fresh air system, impurities in air are effectively removed through double filtering of the corrugated plate, water flow on the corrugated plate and the air filtering cylinder, and therefore the equipment maintenance frequency is effectively reduced, the cost is reduced, and the efficiency is improved.

The utility model provides a kind of air purification drying device for bottle blowing, it is related to bottle blowing processing technical field, and it includes: box body;The box body is fixed on bottle blowing equipment, and there is an exhaust pipe welded on the right side of box body, and the exhaust pipe is connected with bottle blowing gas supply pipeline, and filter screen seat is inserted on the box body.The device adopts filter screen and filter box double filtration structure, gas is first intercepted large particle impurities by filter screen, and then passes through filter box filled with filter cotton and activated carbon.Filter cotton can further filter fine particles, and activated carbon can effectively remove odour, harmful gas and other gases by virtue of strong adsorption capacity, and the combination of the two greatly improves the depth and precision of air purification;The base block at the top end of the inner wall of box body is connected with cleaning brush by spring rod, and when pulling filter screen seat, cleaning brush can automatically clean the sundries on filter screen, and spring rod can ensure that cleaning brush is always in close contact with filter screen, even if wear, it can also automatically follow up, reduce manual cleaning frequency, reduce maintenance cost and workload.

The utility model provides a waste liquid impurity removing and filtering device which comprises a reaction tank, a filtering box, a liquid collecting box and a scraping assembly, the filtering box is arranged in the reaction tank, an opening extending out of the reaction tank is formed in the filtering box, the liquid collecting box is movably arranged in the opening, a bearing part is arranged on the filtering box, and a filtering plate is movably installed on the bearing part; the filter box is provided with an accommodating groove extending to the outside of the reaction tank and is provided with a sieving plate, and waste liquid positioned at the top of the filter box respectively penetrates through the filter plate and the sieving plate and falls into the liquid collecting box, so that the waste liquid positioned in the liquid collecting box is subjected to double filtration, and impurities in the waste liquid are removed; the scraping assembly is located between the filtering plate and the screening plate, a sliding base in the scraping assembly drives a scraping plate to move in the length direction of a traction rod, the scraping plate scrapes impurities on the screening plate, the situation that meshes of the screening plate are blocked by the impurities is avoided, double filtration of waste liquid can be achieved through the filtering plate and the screening plate, and the filtering efficiency is improved. The filtering efficiency is improved.

The utility model relates to the technical field of wastewater treatment devices, and discloses a wastewater treatment device for feldspar powder production, which comprises a control platform, a lower treatment cylinder is arranged on the rear side of the control platform, an upper treatment cylinder is fixedly mounted at the top of the lower treatment cylinder, and a top cover is arranged at the top of the upper treatment cylinder. A four-corner support is fixedly mounted at the top of the top cover, a feeding hopper is fixedly mounted at the top of the four-corner support, and a conveying pipe is arranged at the bottom of the feeding hopper in a communicating mode. By arranging the large arc-shaped groove and the round collecting box, solid particles can be collected in a centralized mode, the solid particles can be easily taken out by pulling a U-shaped handle in a matched mode, cleaning and maintaining are convenient, a water guide plate is connected in a matched mode, liquid subjected to preliminary filtering smoothly flows into the water collecting barrel, meanwhile, a first filtering layer and a second filtering layer in the water collecting barrel form double filtering, and the filtering effect is good. The discharged water is ensured to be clear and pure, and the effects of improving the operation convenience and improving the wastewater treatment quality are achieved.

The utility model discloses an air filter applied to a dust-free laboratory, relates to the technical field of air filtration of the dust-free laboratory, and aims to solve the problems that the conventional air filter has defects in dual gas filtration and purification and the overall filtration effect needs to be improved. A filter element is installed in the middle of the interior of the filter box, an adsorption box is fixedly connected to the side surface of the filter box, an exhaust pipe is fixedly connected to the side surface of the filter box, the air outlet end of the exhaust pipe communicates with the space of one end of the interior of the adsorption box, and a ceramic base is fixedly installed on the inner wall of the adsorption box; a discharge electrode and a dust collection electrode are fixedly installed on the symmetrical inner walls of the ceramic base correspondingly, and a plurality of through grooves corresponding in position are formed in the lower surface of the ceramic base and the lower surface of the adsorption box. The effects of double filtering operation and strong filtering effect are achieved.

The utility model provides a safety type gas water heater heat exchanger which comprises a water heater body and a heat exchanger, the heat exchanger is installed in the water heater body, a first water inlet pipe is arranged at the bottom of the heat exchanger, a filtering assembly is arranged at one end of the heat exchanger, and a second water inlet pipe is arranged at the bottom of the water heater body. The second water inlet pipe is connected with the filtering assembly through a supercharger; a first water outlet pipe is arranged on one side of the heat exchanger and connected with a second water outlet pipe at the bottom of the water heater body through a connecting pipe. A pressure sensor is arranged on the first water outlet pipe and electrically connected with a controller arranged on one side of the water heater body. According to the heat exchanger, the filtering assembly is arranged at one end of the first water outlet pipe, cold water needs to pass through the heat exchanger firstly and then enters the heat exchanger, double filtration of the cold water is achieved through the filtering assembly, various impurities in water can be intercepted, the chance that corrosive substances make contact with the heat exchanger is reduced, and the risk that the heat exchanger is corroded is reduced.

The utility model discloses a steam pipeline drainage device for heat engineering, including the drainage branch pipe of being connected on steam pipeline, set up the drainage valve and the storage bucket for storing condensate water on the drainage branch pipe, be provided with filter assembly on the drainage branch pipe, and filter assembly distributes the both sides of drainage valve, and filter assembly can detachable setting is in the drainage pipe, and the water outlet of drainage valve is provided with the connecting pipe, and the connecting pipe with storage bucket is detachable connection, and the translation support mechanism is established to the below of storage bucket, and the translation support mechanism is provided with two placement sites, and each placement site can place a storage bucket. The scheme is through setting detachable filter assembly in the drainage branch pipe, realizes double filtration, prevents the impurity and blocks the drainage valve. The telescopic design of connecting pipe cooperates with the translation support mechanism, makes the storage barrel change convenient, need not stop, guarantees steam pipeline continuous operation, improves work efficiency, and storage barrel collects condensate, avoids water resource and heat waste.

The utility model discloses a magnetic oil filter which comprises a shell, a filter cover mechanism forming an assembly type cover body structure, a pre-screening mechanism used for pre-screening magnetic oil and a filter element mechanism used for forming a double-filtering structure, and the upper end of the shell is provided with an opening structure. The filter cover mechanism is assembled at an opening in the upper end of the shell, the pre-screening mechanism is arranged on the inner side of the filter cover mechanism, and the filter element mechanism is arranged in the shell. The filter is convenient to disassemble, assemble and maintain while the filter element is replaced, the pre-screening mechanism is arranged, metal impurities in oil entering the filter can be preliminarily pre-screened, abrasion and blockage of the filter element caused by accumulation of the metal impurities are avoided, the service life of the filter element is prolonged, and the service cycle of the filter element is prolonged; the magnetic oil can be doubly filtered, the impurity removal rate is high, and the filtering effect is good.

The invention provides a superconducting magnet self-cleaning dipping device and dipping method, and relates to the technical field of superconducting magnet dipping treatment, the superconducting magnet self-cleaning dipping device comprises a dipping cylinder, a glue inlet container, a filling bag, a mixing cylinder, a stirring paddle, a communicating pipe, a vacuum pump, a pump body, a filter screen, a spray header, an infrared heating device, various windows and other parts, and corresponding dipping operation processes. The filling bags are arranged in the filling gaps, all the components are connected through the communicating pipes to form a circulating system, a circulating impurity removal mode is adopted, and measures such as window observation, infrared heating, stirring and mixing, double filtration and vacuum breaking of a vacuum pump are matched; the effects of reducing the usage amount of epoxy resin and the subsequent cleaning workload, efficiently removing impurities and bubbles in the superconducting magnet coil, accurately judging the impregnation quality and making the epoxy resin in the coil denser are achieved, meanwhile, it is guaranteed that the impregnation environment is clean, colloid is evenly and purely mixed, and finally the impregnation quality and the use performance of the superconducting magnet are improved.

The utility model relates to a kind of multi-row vent hole pressure relief type high-temperature cooking pot cover, including: bottom cover, the central portion of which is provided with guide hole, the inside of guide hole is fixedly provided with installation pipe, the inside bottom end of installation pipe is provided with bearing platform, the top of bearing platform is provided with supporting spring, the center of supporting spring is provided with connecting rod;The inside bottom end of bottom cover is slidably provided with baffle, baffle is fixedly connected with connecting rod, and through slot hole is opened in the outer circumferential of baffle.The utility model relates to the technical field of pressure cooker cover.This kind of multi-row vent hole pressure relief type high-temperature cooking pot cover, baffle dynamic adjustment gap is combined with the double filtration of protruding ring and spiral guide ring, can reduce the possibility that food debris blocks pressure relief pipe, while multiple pressure relief pipe design ensures that high-pressure steam is released in segments quickly, avoid the risk of pot explosion caused by the sudden increase of pressure in pot;Stable pressure chamber and spiral vent hole make the discharged steam cooling and diffusion, significantly reduce the probability of user scald.

The utility model discloses a biological filter tower device with a deodorization function, which comprises a water collecting tank, the top of the water collecting tank is fixedly connected with a shell, the inner wall of the top of the shell is fixedly connected with a spraying frame, the inner walls of the two sides of the shell are respectively provided with a guide rail, a sliding frame is movably connected between the guide rails, a filler is arranged in the sliding frame, and the filler is arranged in the sliding frame. Clamping openings are formed in the inner walls of the two sides of the shell correspondingly, two second avoiding grooves are formed in the outer wall of one side of the sliding frame, clamping frames are movably connected into the two second avoiding grooves correspondingly, the clamping frames are connected with the clamping openings in a clamped mode, the outer sides of the clamping frames are sleeved with second springs, and the two ends of the second springs are fixed to the clamping frames and the sliding frame correspondingly; and a pull rope is mounted at one end of the clamping frame. According to the sewage treatment device, not only can the filler be conveniently replaced by a worker, but also sewage can be doubly filtered through the matched use of the filler and the filter cotton, and the pull rope can be guided through the rotating wheel.

The high-lift horizontal submersible pump comprises a protective shell, the end, close to a water inlet of a submersible pump body, of the protective shell is fixedly connected with a positioning cylinder through a bolt, the end, away from the protective shell, of the positioning cylinder is fixedly connected with a filtering cover, and the inner side face of the positioning cylinder is fixedly connected with a filtering plate; embedding grooves are correspondingly formed in the positions, opposite to the filter plates, of the surface of the filter cover, the protective shell is fixedly connected with a main vertical plate through a fixing ring, the main vertical plate is fixedly connected with a base through a main transverse plate, and fixing blocks are symmetrically connected to the two sides of the base. According to the high-lift horizontal submersible pump, through cooperation of the filter cover, the filter plate, the positioning cylinder, the fixing ring and the base, the water inlet of the high-lift horizontal submersible pump can be provided with a double-filter structure, the double-filter structure can be conveniently assembled, disassembled and cleaned, and the probability that the high-lift horizontal submersible pump breaks down is reduced.

The invention relates to the technical field of tail gas denitration, in particular to a gas generator set tail gas denitration device which comprises a tank body, a dust removal mechanism for pretreating tail gas and a denitration mechanism for denitrating the tail gas. The pretreatment mechanism comprises blades rotationally mounted on the tank body, a sealing plate fixedly mounted on the tank body, an air hole I formed in the sealing plate, and a rotating assembly for throwing out tail gas, and the rotating assembly comprises a connecting plate, an air chamber fixedly mounted on the fixing frame, and an air guide plate fixedly mounted on the air chamber. According to the tail gas filtering device, when tail gas enters the tank body, on one hand, the blades can be driven to rotate, the gas guide plate rotates to throw the tail gas out of the flow channel and remove small particles in the tail gas, on the other hand, the tail gas circulation path is increased, the tail gas is filtered for multiple times when the tail gas circulates, and therefore double filtration of the small particles in the tail gas is achieved; the pretreatment effect on the tail gas is improved.

The utility model provides a multifunctional electric energy quality monitoring cabinet, which relates to the technical field of electric power equipment and comprises a cabinet body, a plurality of groups of vent holes are arranged on one side of the outer wall of the cabinet body, a partition plate is fixedly connected to the inner surface wall of the cabinet body, a coarse filter screen is fixedly mounted on the inner surface wall of the cabinet body, and a fine filter screen is fixedly mounted on the inner surface wall of the cabinet body. The inner surface wall of the cabinet body is fixedly connected with two fixing plates. According to the utility model, under the interaction of all the components of the device, gas entering the cabinet can be subjected to double filtration treatment, harmful substances such as dust and impurities are prevented from entering the cabinet, the cleanliness of electrical elements is guaranteed, the operation performance of equipment is improved, the service life of the equipment is prolonged, and meanwhile, the cleaning mechanism of the filter components is convenient to clean. Good filtering performance can be always kept in long-term use, and a high-quality operation environment can be continuously created for equipment in the cabinet.

The utility model discloses a dust collecting filter bag convenient to dismount belongs to dust collecting filter bag field, including filter bag, the inside of filter bag is inserted with filter mechanism, the upper surface fixedly connected with connecting sleeve of filter bag, and the inside of connecting sleeve is penetrated with connecting rope, through the cooperation of above -mentioned each device, the utility model simple structure, convenient operation, through the filter mechanism of setting, when supporting in the filter bag inside with A support ring and B support ring, fast installation of plug -in rod and filter screen, the downtime of equipment can be reduced significantly to fast dismounting filter bag, and the maintenance speed can be accelerated to simplify the dismounting process, so that the maintenance team can complete more work in shorter time, after the installation of filter mechanism is completed, connecting rope, fixed buckle and fixed clamping sleeve are fixed in the filter bag, and when using, through filter screen and filter bag reach the effect of double filtration, improve the filtration effect, and can complete dismounting fast when installing, improve the convenience.

The utility model relates to galvanization production technical field discloses a kind of sewage evaporation mechanism of continuous galvanizing production line, including base and evaporating tank, the top of the base is fixed with evaporating tank.This sewage evaporation mechanism of continuous galvanizing production line when using, after main pipe is connected into external sewage introduction pipe, sewage can be introduced by main pipe, by using the inside filter screen of installation ring one, some particle impurities contained in sewage can be filtered and removed, reduce the impurity content in sewage, the sewage after pre-filtering is introduced into mechanism by water inlet pipe, when the inside filter screen of installation ring one needs cleaning, valve four and valve three are opened first, then valve one and valve two are closed, the sewage introduced into the inside of main pipe is introduced into the inside of installation ring two by branch pipe one and is pre-filtered, by setting double filtration component, it can be filtered without stopping, solve the problem that it is inconvenient to pre-filter sewage.

The utility model discloses a liquid reaction tank with a pipe blocking prevention function, which relates to the technical field of liquid reaction tanks and comprises a tank body, a rack is arranged in the middle of the top end of the tank body, a speed reducer is arranged at the top end of the rack, a driving motor is arranged at the top end of the speed reducer, an output shaft of the driving motor is connected with the speed reducer, and a connecting rod extends out of the middle of the bottom end of the speed reducer. The connecting rod extends into the inner top surface of the tank body and is provided with a shaft seal on the top surface of the rack, two solution feeding pipelines are symmetrically arranged on two sides of the rack, and an endoscope is mounted on one side of the outer wall of the tank body; through the reasonable layout of the tank body and each part, the stable and compact structure of the equipment is ensured; through cooperation of the driving motor, the speed reducer, the rotating shaft and the stirring blades, the mixing efficiency of the solution and the adsorbent is improved; by means of double filtration of the filter screen plate and the Y-shaped filter pipe, fibrous materials are effectively prevented from blocking the pipeline; and finally, the problem that the pipeline is easy to block due to fibrous materials is solved.

A filter for a medicine dissolving device comprises a filter body, an outer conical connector and an inner conical connector, one side of the filter body is connected with the outer conical connector, the other side of the filter body is connected with the inner conical connector, and the filter is characterized in that the filter body is composed of a barrel, a first movable cover, a second movable cover and a filter assembly, threads are arranged on the outer walls of ports at the two ends of the cylinder body, one end of the cylinder body is in threaded connection with a first movable cover, the other end of the cylinder body is in threaded connection with a second movable cover, and a filtering assembly is installed in the cylinder body. The filter is assembled in a threaded connection mode, the threaded connection mode is more stable compared with clamping connection, and in addition, the sealing ring is additionally arranged to enhance the overall sealing performance of the filter.

This utility model provides a novel columnar paint mist collector, including a shell. Multiple filter covers are fixedly installed on the inner wall of the shell. A first inner core is fixedly installed on the inner wall of each filter cover. A guide filter plate is fixedly installed on the outer wall of each filter cover. Multiple second inner cores are fixedly installed on the inner wall of each guide filter plate. Two full-coverage filter plates are also fitted onto the outer wall of each filter cover. Multiple third inner cores are fixedly installed on the inner wall of each full-coverage filter plate. The advantages of this utility model are: the guide filter plates reduce the leakage of air from the outside of the filter covers when they are misaligned; the full-coverage filter plates increase the overall filtration effect, thus adding a double filtration effect while filtering the filter cover at that position, thereby maintaining multiple filtration effects on the air while reducing the leakage of unfiltered air.

The submersible pump comprises a pump head, a pump cover and a pump body, the pump cover and the pump body are arranged on the lower side of the pump head, the upper end of the pump cover is fixedly connected with a water outlet, the lower end of the pump body is upwards connected with a pump bottom in a sleeved mode, and the upper end of the pump cover is fixedly connected with a cable b. A controller is fixedly connected to the other end of the cable b, cables a are fixedly connected to the positions, close to the left side and the right side, of the lower end of the controller correspondingly, a plug and a float switch are arranged at the other ends of the two cables a correspondingly, a plurality of water inlets are formed in the outer wall of the pump bottom at equal intervals, and a fixing ring is connected to the outer portion of the pump bottom in a threaded mode; a filter screen a is fixedly connected to the lower end of the fixing ring, a filter screen b is fixedly connected to the position, located in the filter screen a, of the lower end of the fixing ring, and by installing the filter screen a and the filter screen b, impurities in water flowing to the pump bottom through the water inlet are doubly filtered, and normal rotation of the water suction disc cannot be affected.

The utility model relates to a sorting and filtering device for tumor cell clusters, which comprises a filter cartridge and a collecting cartridge positioned below the filter cartridge, a filter assembly is arranged in the filter cartridge, and the filter assembly comprises a first filter plate and a second filter plate which are arranged at an interval along the axial direction of the filter cartridge; the circumferential surface of the first filter plate and the circumferential surface of the second filter plate are attached to the inner wall of the filter cartridge, the first filter plate and the second filter plate are both provided with through holes allowing tumor cell clusters to penetrate through, and the upper side of the first filter plate is provided with a first connecting part used for movably connecting the filter assembly to the filter cartridge; a second connecting part for movably connecting the second filter plate to the first filter plate is arranged on the upper side of the second filter plate. The sorting and filtering device for the tumor cell clusters not only can perform double filtration on tumor cells, but also can conveniently take out the filter plate after filtration is completed, so that thorough disinfection treatment is facilitated.

The utility model discloses a mobile electrostatic range hood air suction cover, which relates to the technical field of flue gas purification, and comprises an air suction cover body, an air suction pipe, a flange connecting piece, a first filter plate and a second filter plate, chutes are arranged on two side walls of the air suction cover body, and the side surface of the second filter plate is connected with connecting rods of which the number corresponds to that of the chutes. The connecting rod is slidably arranged in the sliding groove, and the extending end of the connecting rod penetrates through the side wall of the air suction cover body to be connected with a vibration unit. A double filtering system is adopted, the second filtering plate further filters small particles in flue gas, the purification effect is improved, the automatic ash removal function of the second filtering plate is achieved through the design of the external vibration unit and the connecting rod, the second filtering plate vibrates along with vertical movement of the air suction cover body, and the dust removal effect of the air suction cover is improved. Therefore, the adsorbed particulate matters are effectively removed, the filtering effect is maintained, the maintenance cost and the workload are reduced, and the continuous and efficient work of the air suction cover is also ensured.

The utility model discloses filtering equipment for a polyurethane curing agent, and relates to the technical field of curing agent processing. The polyurethane curing agent filtering device comprises a filtering box, a feeding hopper is fixedly installed in the filtering box, the feeding hopper is located at the position close to an opening in the top of the filtering box, and the feeding hopper is used for conveying a polyurethane curing agent into the filtering box; the device further comprises a first filtering assembly, and the first filtering assembly is used for preliminarily filtering the polyurethane curing agent input into the filtering box. According to the filtering equipment disclosed by the utility model, through the design of the double filtering components, the high-efficiency fine filtering of a polyurethane curing agent is realized; an air cylinder, a piston block, a pipe clamp and an abutting rod are used in cooperation, intelligent extrusion filtering of the polyurethane curing agent is achieved, and the filtering effect is improved; meanwhile, the detachable design of the filter box is matched with the arrangement of the movable door, so that a user can conveniently clean impurities filtered out of the equipment, and the overall design has remarkable practicability and innovativeness.