675 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 discloses filtering equipment for coating production, and belongs to the technical field of filtering equipment, the top of a bottom frame is movably connected with a vibration frame, and the vibration frame is connected with the bottom frame through a vibration piece; a discharging plate is movably installed on the swing base, and a discharging hopper is arranged at the top of the discharging plate. An overturning shaft is fixedly arranged at the bottom of the discharging hopper, and meshing parts matched with the half gears are arranged at the two ends of the rack. Symmetrical drainage pipes are arranged on the two sides of the discharging bin, and a plurality of sets of fixed filtering holes are formed in the tail ends of the drainage pipes. An arc-shaped connecting plate coaxial with the drainage tube is fixedly arranged on the outer side of the supporting frame, a storage cavity is formed in the arc-shaped connecting plate, and a movable filter screen is rotationally arranged in the storage cavity. When coating needs to be doubly filtered, the rotating motor is started to drive the moving filter screen to rotate, and at the moment, the coating sequentially passes through the fixed filter holes and the moving filter holes to be doubly filtered. When only one-time filtering is needed, the movable filter screen is driven to retract into the storage cavity, and the filtering efficiency and the filtering effect are improved through the design.

The utility model is applicable to the technical field of filter joints, and provides a joint for mounting a filter, which comprises a valve body, the connecting ends are arranged on the two end sides of the valve body; the connecting assemblies are arranged on the outer sides of the two connecting ends; the connecting assembly comprises a connector, and the connecting end is in threaded fit with the connector. The assembling groove is formed in the inner side of the connector, and the fixing ring is arranged in the assembling groove; the sealing washer is arranged on the outer side of the fixing ring; the filtering seat is arranged on the outer side of the fixing ring; the filter screen is arranged on the outer side of the filter seat; the device has the advantages of efficient filtering, convenient maintenance and safe flow control, liquid is filtered twice through a double filtering mechanism, the liquid filtering effect is ensured, meanwhile, the installation and maintenance process is simplified through threaded connection and quick disassembly design, quick replacement or other operation of parts in a connector is achieved, and the working efficiency is improved. Meanwhile, accurate flow control is achieved through the safety locking function, and the safety and flexibility of overall use are improved.

The invention relates to the technical field of water purification equipment, particularly provides a reverse osmosis membrane filter element and a water purifier, and aims to solve the problems that the amount of waste water generated after raw water of an existing water purifier passes through a reverse osmosis membrane is large, namely, the purification-waste ratio is low, and the waste water discharge amount is too large, so that unnecessary waste of water resources is caused. In order to achieve the purpose, the reverse osmosis membrane filter element comprises a first filter element and a second filter element, the first filter element is nested on the outer side of the second filter element and is detachably connected with the second filter element, and wastewater generated by filtration of the first filter element is subjected to secondary filtration through the second filter element and then is discharged from a wastewater port. According to the reverse osmosis membrane filter element designed by the invention, wastewater generated after raw water is filtered by the first filter element is filtered again by the second filter element, and a part of pure water is generated again, so that the wastewater discharge is reduced, the wastewater ratio is increased, the purpose of double filtration is realized, and the waste of water resources is reduced.

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 utility model discloses a wire drawing annealing device for wire production, which comprises a bottom plate, a heating box is fixedly arranged at the top of the bottom plate close to the center, a wire drawing device and a dust removal cylinder are respectively and fixedly arranged at the top of the bottom plate corresponding to the two sides of the heating box, and a purification box is fixedly arranged at the center of the top of the heating box. And an air exhaust motor is fixedly mounted in the center of the top in the purification box. According to the wire drawing and annealing device for wire rod production, through the design of the purification box, an air exhaust motor, air exhaust fan blades, material filtering plates, activated carbon and an air inlet pipe, the purification box at the top of the heating box in the device is matched with the air exhaust motor and the air exhaust fan blades to work, waste gas generated in the heating box can be effectively extracted, and an activated carbon layer between the two material filtering plates can effectively absorb the waste gas; harmful substances in the waste gas can be adsorbed, double filtration of the waste gas is achieved, the purified gas is discharged through the gas outlet groove in the top of the purification box, and the influence of the waste gas on the environment and the health of workers is remarkably reduced.

The invention belongs to the technical field of agricultural product pesticide residue detection, and particularly relates to an agricultural product pesticide residue detection mechanism and a detection method.The agricultural product pesticide residue detection mechanism comprises a supporting mechanism, and the top of the supporting mechanism is provided with a crushing mechanism, a grinding mechanism, a double filtering mechanism and an independent power driving mechanism. According to the agricultural product pesticide residue detection mechanism and detection method, the crushing mechanism is arranged to quickly crush agricultural products to be detected, so that juice and residues of the agricultural products flow out, the agricultural products enter the grinding mechanism to be ground and centrifugally filtered, and then liquid to be detected is controlled to enter the storage frame to be stored and wait for detection; and the grinding mechanism can control fine grinding of the agricultural products to be detected, juice of pesticide residues in the agricultural products can flow out conveniently, the detection precision of the pesticide residues is improved, double centrifugal filtration enables the liquid to be detected to be rapidly separated from the residues, and the detection efficiency is improved.

The invention relates to the technical field of sludge separation, and discloses a sewage and sludge separation device which comprises a main body, the top of the main body is in bolted connection with a top cover, the outer surface of the main body is fixedly connected with a water outlet pipe, a discharge port is formed in the outer wall of the main body, a discharge door is hinged to the interior of the discharge port, and a spring rod is rotationally connected to the side, close to the main body, of the discharge door. The ends, away from the discharging door, of the spring rods are rotationally connected with blocking doors. At the moment, sludge becomes a sludge cake after being extruded, residual water in the sludge can be discharged outwards through filtering holes in an inner sleeve, when sludge and water are separated through centrifugal force generated by extrusion of a lower top plate and rotation of a conical barrel, a double filtering system is formed, and the speed of water passing through a filtering net and a filtering plate is increased; and compared with a traditional gravity precipitation separation mode, the separation time is greatly shortened, so that the separation efficiency of sewage and sludge is integrally improved.

The utility model discloses an integrated domestic sewage treatment device, which belongs to the technical field of sewage treatment and comprises a device main body, the device main body comprises a treatment box, a liquid storage cavity is arranged in the treatment box, a sewage treatment component is connected in the liquid storage cavity, cleaning grooves are arranged on two sides of the treatment box, and the cleaning grooves are communicated with the sewage treatment component. Baffles are clamped in the two cleaning grooves, two filter plates are connected into the treatment box, and one filter plate is connected with a first cleaning assembly; according to the utility model, after the rotating filter belt performs double filtration on solid impurities in domestic sewage, the first cleaning brush can scrape the solid impurities on the outer surface of the rotating filter belt onto one filter plate, and the second cleaning brush can scrape the solid impurities in the rotating filter belt onto the other filter plate along the inclined second cleaning brush; according to the device, the filtered impurities can be automatically cleaned while the solid impurities are doubly filtered, so that not only is the operation simple, but also the filtering effect of the device is improved.

The invention discloses a battery monomer, a battery pack and a power utilization device. The battery monomer comprises a shell, an electrode assembly, a top cover, an anti-explosion valve and a first filter screen assembly, the first filter screen assembly is arranged on the side, away from the electrode assembly, of the anti-explosion valve so as to prevent particulate matter from entering the shell. The first filter screen assembly comprises a first filter screen, a second filter screen and a connecting piece, the first filter screen and the second filter screen are arranged in a spaced mode in the first direction, and the first connecting piece is arranged between the first filter screen and the second filter screen in the first direction and matched with the first filter screen to define a first hollow structure. The first filter screen assembly can shield high-temperature and high-pressure emissions to realize double filtration, so that the high-temperature and high-pressure emissions are directly accumulated on the first filter screen assembly to protect an explosion-proof valve of the non-thermal-runaway battery monomer, and the high-temperature and high-pressure emissions are prevented from entering the non-thermal-runaway battery monomer to prevent the explosion-proof valve of the non-thermal-runaway battery monomer from being damaged. And heat diffusion is effectively inhibited, so that the safety performance of the battery pack is improved.

The invention discloses an efficient automatic drying device for hydrogen production through water electrolysis and a using method thereof. The efficient automatic drying device comprises a barrel, a sealing cover and a gas-water filter are arranged at the top of the barrel, and a drainage assembly is arranged at the bottom of the inner side of the barrel; a water outlet is formed in the bottom of the cylinder body, an air inlet and an air outlet are formed in the two sides of the cylinder body, the water drainage assembly comprises a pressing block and a water scraping assembly, a sealing assembly is arranged at the bottom of the pressing block, an installation pipe is arranged below the water outlet, and a supporting assembly is installed outside the cylinder body; through double filtration of the gas-water filter membrane and the condensation pipe, moisture in gas can be efficiently removed, and the drying effect is ensured; through the design of the drainage assembly and the movable drainage pipe, the automatic drainage function is achieved, and operation complexity is reduced; the arrangement of the water scraping assembly can greatly reduce residual water vapor on the inner wall of the cylinder body, and the arrangement of the movable drainage pipe at the bottom can further reduce residual liquid at the bottom of the cylinder body, so that the interior of the cylinder body is dry, and the quality of output gas is ensured.

The utility model relates to the technical field of submersible pumps, and discloses a submersible pump with double filtration, which comprises a submersible pump body, the top of the submersible pump body is fixedly connected with a handle, and the surface of the submersible pump body is fixedly provided with a filter screen. According to the submersible pump with the double filtering function, by arranging the filtering frame, when a user uses the submersible pump body, the filtering effect of the submersible pump body is further improved, and the situation that when the user uses the submersible pump body, sundries make direct contact with a filtering net to cause blockage is avoided, so that the filtering effect of the submersible pump body is not affected is avoided; according to the submersible pump, the connecting rope can be conveniently stored when a user uses the connecting rope to fix the submersible pump body, and the situation that the connecting rope is wound after the user takes out the submersible pump body is avoided, so that the user does not need to use the connecting rope; and the purposes that impurities in the water are further filtered, and the user can conveniently wind the connecting rope are achieved.

The invention discloses an automobile sheet metal part cutting device and a using method thereof, and relates to the technical field of automobile sheet metal machining, the automobile sheet metal part cutting device comprises a rack, and one side of the rack is fixedly connected with a supporting frame. According to the laser cutting device, the first bevel gear is meshed with the second bevel gear, the second horizontal gear is meshed with the first horizontal gear, the first bevel gear drives the second bevel gear and the laser cutting head to rotate synchronously when rotating, and the inclination angle of the laser cutting head is changed; an auxiliary part and a laser cutting head can be driven to rotate around the circle center of a second horizontal gear, the cutting position of a sheet metal part is changed, circular cutting of the sheet metal part is achieved, the precision during overall cutting is improved, frequent movement and replacement of the sheet metal position are not needed, operation is easy, cutting efficiency is high, waste gas is doubly filtered through a first filter screen and a second filter screen, and the cutting efficiency is improved. The waste gas can be purified through the spraying pipe and the purifying plate, so that the influence of direct exhaust of the waste gas on the air quality is avoided.

The utility model discloses a sewage treatment and purification device, which relates to the technical field of sewage treatment equipment and comprises a shell, a filtering mechanism is arranged at the top of the shell and comprises a water outlet, the bottom of the water outlet is fixedly connected with the shell, and the bottom of the shell is fixedly connected with a sewage outlet. One side of the shell is fixedly connected with a water inlet, the inner side of the shell is fixedly connected with a mesh cylinder, the inner side of the mesh cylinder is provided with a material guide plate, the top of the material guide plate is fixedly connected with a limiting block, the bottom of the limiting block is rotatably connected with the mesh cylinder, and the top of the limiting block is fixedly connected with an impeller. Various impurities in sewage can be intercepted, meanwhile, the problem that the purification device is blocked due to excessive impurities is avoided, the number of the impurities is reduced, the sewage treatment efficiency and the stability effect are improved, and the problems that traditional sewage treatment equipment is insufficient in filtering force and prone to being blocked are solved.

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 discloses a machine tool cooling liquid filtering device which comprises a filtering bin and a storage bin, and the filtering bin is fixed on the storage bin through a connecting plate; a first filter chamber and a second filter chamber are arranged in the filter bin, the first filter chamber and the second filter chamber are communicated through a connecting hole, a filter screen is arranged in the middle of the first filter chamber, a filter element is arranged in the second filter chamber, and a detachable bottom plate is arranged at the bottom of the second filter chamber; after the filter element is fixed in the second filter chamber through the bottom plate, the connecting hole is communicated with an inner hole of the second filter chamber; a liquid discharge pipeline is arranged between the bottom plate and the storage bin, and the second filtering chamber is communicated with the interior of the storage bin through the liquid discharge pipeline. According to the cooling liquid filtering device, cooling liquid is filtered, and meanwhile, double filtering is achieved, so that repeated use of the cooling liquid is achieved, and the cost is reduced; and secondly, the filtered cooling liquid is stored, and meanwhile, the height of the cooling liquid in the storage bin is monitored.

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 utility model discloses a cowshed sterilizing and disinfecting device which comprises a disinfecting and spraying device and a disinfectant mixing device, the disinfecting and spraying device is arranged on the disinfectant mixing device, and the disinfecting and spraying device comprises a disinfecting box, an observation plate, an infusion pipe, a conveying pipe, an atomizing nozzle, a liquid pumping box, a water pump, an air outlet and a fine filter screen. The observation plate is fixedly connected to the middle of one side of the disinfection box, the infusion tube is fixedly connected to the top end of the disinfection box, the liquid pumping box is fixedly connected to the side, away from the observation plate, of the disinfection box, and the water pump is fixedly installed on the side, close to the liquid pumping box, of the disinfection box. Air is injected into the disinfection box through the air pump, so that the air impacts water and disinfectant to generate a strong stirring effect, thereby accelerating the mixing speed of the water and the disinfectant, ensuring the uniform distribution of the disinfectant, improving the disinfection effect, preventing the spray head from being blocked through double filtration, and prolonging the service life of equipment.

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.