875 results about "Filtration technique" patented technology

A method to unload a fluid mixture from an underground production tubing, in order to reduce the hydrostatic pressure within the fluid mixture. A method to kill an oil or gas well by equalizing pressure between the production tubing, the casing annulus, and a surface tank battery, by de-pressurizing the fluid within the production tubing and the casing annulus, and by pumping a kill fluid. One goal of the methods may be to avoid discharging unwanted liquid phase or gas phase to the atmosphere, therefore reducing unnecessary emissions, and valuing the recovered products.

The invention discloses a dust filtering mechanism with a self-cleaning function for paperboard processing, and relates to the technical field of paperboard processing dust filtering, the dust filtering mechanism comprises an adjusting unit arranged at the top of a fixing frame and used for preventing dust from overflowing, and a cleaning unit matched with the adjusting unit to regularly clean dust in a dust collecting hopper; an elastic rope used for changing the thickness of the elastic rope in cooperation with pulses is arranged at the top of the fixing frame, and a first dust collecting plate and a second dust collecting plate which are used for collecting dust are arranged in the dust collecting hopper. The fixed rod at the top of the lifting frame is matched with the slope groove of the rotating ring to convert displacement along the slope groove into circumferential rotation of the rotating ring, and the elastic ropes are synchronously tensioned along with deflection of the rotating ring, so that gaps between the adjacent elastic ropes are dynamically increased, a smooth falling channel is provided for dust, and the dust removal efficiency is improved. The first dust collecting plate and the second dust collecting plate are turned from a horizontal state to a vertical state, so that dust attached to the surfaces of the dust collecting plates falls into the bottom of the dust collecting hopper and is collected by an external collecting system.

The present invention relates to the technical field of water filtration, and discloses a carbon rod folding ultrafiltration integrated filtration system, which comprises a filter shell and two filter cartridges arranged in the filter shell, one end of each of the two filter cartridges is fixedly connected with a wide cartridge, a folding ultrafiltration core is inserted in the inner side of each filter cartridge, a carbon rod is inserted in the inner side of each folding ultrafiltration core, and the filtration system further comprises a batch rotation part, the cylinder cover is arranged on the filter shell and is in threaded connection with the cylinder cover; the cleaning part is arranged on the inner side of the filter cartridge, is fixedly connected with the cartridge cover and is positioned on the outer side of the folding ultrafiltration element; the dense silicon part is arranged on the wide cylinder and located on the outer side of the threaded ring; according to the invention, the batch rotating part is used for synchronously rotating the two cylinder covers to open and take down the two cylinder covers, the two cylinder covers are translated while rotating, the cleaning part is driven to clean and push impurities remained in the filter cylinder in the rotating and moving processes, and meanwhile, the folding ultrafiltration element and the carbon rod are supported and driven to be taken out from the filter cylinder; furthermore, a plurality of cylinder covers can be conveniently opened, impurities remained in the filter cylinder can be cleaned, and the working efficiency is improved.

The invention relates to the technical field of cutting fluid separation and filtration, and discloses mist separation and filtration equipment for cutting fluid for photovoltaic silicon wafer production, which comprises a rack, a centrifugal tank body, a feeding shaft, a servo motor and a filter cartridge, a locking sleeve is installed on the feeding shaft, a plurality of fixed sleeves are fixedly installed on the locking sleeve, a sliding shaft body in sliding connection with the inner wall of each fixed sleeve is installed in the corresponding fixed sleeve, an annular disc frame is fixedly installed on each sliding shaft body, and a plurality of intercepting components are arranged between the annular disc frames and the fixed sleeves; according to the mist separating and filtering equipment for the cutting fluid for photovoltaic silicon wafer production, flow field parameters can be effectively changed by dynamically adjusting the radius of the intercepting part, optimization treatment on oil mist with different concentrations is achieved, the particle residence time can be prolonged through the intercepting part, and therefore collision polymerization between superfine particles and large particles is facilitated; therefore, the large particles can carry the superfine particles to be in contact with the filter cartridge, and are separated and filtered under the action of the filter cartridge.

The utility model relates to the technical field of wastewater filtration, and discloses an anti-blocking filter device for industrial wastewater treatment, which comprises a filter tank, a rotary filter component is arranged in the middle of the filter tank, impurity outlets are arranged at the cavity bottom of the filter tank and positioned on two sides of the rotary filter component, and the filter tank is provided with a filter screen. And blocking plates used for sealing and blocking or opening the impurity outlet are arranged on the two sides of the filtering box, the rotary filtering assembly separates blocking objects on the filtering assembly through rotation, and a water outlet pipe is arranged on the rotary filtering assembly in a communicating mode. According to the utility model, the blocked filtering assembly can be conveniently and rotationally cleaned, the filtering assembly does not need to be disassembled for additional cleaning, the blockage cleaning is efficient, and the cost is low.

The invention relates to the technical field of cooling water filtration, in particular to a thermal power plant cooling water waste heat recycling device which comprises a bearing assembly, and the bearing assembly comprises a storage tank and a bearing tank arranged above the storage tank; the filter assembly comprises an impeller frame arranged on the inner side of the bearing tank, the bearing assembly further comprises a drainage pipe arranged below the storage tank, a fixing ring is arranged on the outer side of the storage tank in a sleeving mode, supporting frames are arranged on the outer side of the fixing ring, and the supporting frames are arranged on the outer side of the fixing ring in a circumferential array mode; a top cover is arranged above the bearing tank, a water inlet pipe is arranged on the outer side of the bearing tank, and a water inlet is formed in the inner side of the water inlet pipe. And the cooling water can drive the filtering assembly to filter the cooling water through the falling impact force, so that impurities in the water are reduced.

The invention belongs to the technical field of natural gas filtration, and particularly discloses a multi-field coupling synergistic natural gas coalescence, separation and filtration device which comprises a shell body, a vibration generator, a sound wave generator, a magnetic field generator, a filter element body and an integrated control module. A cavity is formed in the shell body, an air inlet and an air outlet which are communicated with the cavity are formed in the shell body, the filter element body is mounted in the cavity, and the interior of the filter element body is communicated with the air outlet; a hollow interlayer is arranged between the shell body and the cavity, and the magnetic field generator and the sound wave generator are both arranged in the hollow interlayer; the vibration generator is arranged on the filter element body; the integrated control module comprises a control unit. By means of the structural design, sound-magnetism-vibration multi-field synergistic interaction is achieved, the limitation of a single physical field is broken through, the self-cleaning function of the filter element body is effectively achieved, the blocking speed of pores of the filter element body is decreased, pressure loss is reduced, and the service life of the filter element body is prolonged.

The invention relates to the technical field of water filtration, and particularly discloses a lamination special for a laminated filter. According to the lamination, a flow channel is formed by an inner ring wall and an outer ring wall, and the core innovation lies in two-stage filtering design: a first-stage coarse filtering structure is arranged at an inlet of the outer ring wall and consists of a plurality of equidistant hexagonal filtering elements, and the elements are centrosymmetric and comprise equilateral triangle and rectangular structures; the secondary fine filtering structure is of a W-shaped rib structure, is formed by connecting a first rib, a third rib and a second rib in the middle end to end, and is divided into an outer chamber and an inner chamber by the top of the second rib; a vertical semi-elliptical hole is formed in the convex edge of the outer chamber and is used for providing a backwashing tangential force; a 30-degree inclined hole and a clean straight-through hole are formed in the third rib of the inner cavity, and fine filtration is realized by utilizing radial force of water flow. According to the laminated filter, the mechanical energy loss is reduced, the water flow impact force is maintained, and the starting pressure is reduced; the design that the overflowing area of the W-shaped cavity is gradually decreased strengthens the impact force of sand-containing water, head loss is reduced in cooperation with the semi-elliptical holes, tangential and radial scouring force is synchronously improved in the backwashing stage, and the problem of sediment accumulation is solved. The method is suitable for the fields of agricultural irrigation, sewage treatment and the like.

The utility model discloses a water conservancy project gate with an impurity filtering function, which comprises a gate structure, and the inner wall of the gate structure is connected with a cleaning mechanism in a sliding manner; according to the gate structure and the cleaning mechanism, the filter plate serves as a first defensive line, various impurities in water flow can be effectively blocked by matching with the leakage grooves transversely arranged along the outer wall of the filter plate, the sealing gasket at the bottom of the gate plate is tightly attached to the bottom of the filter plate to form a tight sealing defensive line, and meanwhile the rotary handle is rotated to seal the filter plate. The gate plate can be driven to move up and down through the lifting threaded rod in threaded connection with the gate plate, opening and closing work of the gate is achieved, the cleaning mechanism can be driven to move along the sliding groove by rotating the adjusting threaded rod, the rake tooth plate fixed to the supporting plate shuttles back and forth between the leakage grooves, and impurities are scraped down and collected into the collecting frame. And meanwhile, the inclined surfaces of the supporting plate and the guide plate interact with each other, so that each cleaning work can be smoothly, efficiently and circularly carried out.

The invention relates to the technical field of flue gas dust removal and filtration, in particular to a filter unit tandem type dust remover and method for high-temperature flue gas. A dust accumulation hopper is arranged at the bottom of a first cavity of a dust removal device, a plurality of through holes are formed in a laminate, filter cylinders are installed in the through holes, and a flue gas inlet is formed in the side wall of the first cavity; a smoke outlet is formed in the side wall of the second cavity; a fixing mechanism is arranged at the bottom of the first cavity, the bottom of the filter cartridge is hermetically mounted on the fixing mechanism, an ash removal mechanism is arranged in the filter cartridge, a motor is arranged at the top end of the exterior of the third cavity, a threaded shaft is arranged at the output end of the motor, and the threaded shaft penetrates through the third cavity and the second cavity and extends into the first cavity; the threaded shaft located in the third cavity is in transmission with each set of ash removal mechanism through a gear assembly. According to the invention, through an integrated cooperative mechanism of dust cleaning, dust catching and dust discharging, continuous cleaning of the filter cartridge and whole-course closed-loop collection of dust are realized in a non-stop state, and secondary pollution of dust in the dust cleaning process is avoided.

The invention relates to the technical field of wood board processing gas filtration, and discloses an atmospheric dust removal device for high-frequency hot-pressing wood-plastic composite veneer processing, the atmospheric dust removal device comprises a tank shell, the outer wall of the tank shell is provided with a water level observation line, the bottom of the tank shell is fixedly connected with a support frame, the top of the tank shell is internally provided with a transmission fixed column, and the transmission fixed column is fixedly connected with the support frame. A filtering mechanism is arranged at the top of the tank shell, an air dispersing mechanism, a first reciprocating lead screw, a reciprocating moving rod and an inclined material guiding plate are arranged in the tank shell, the air inlet rotating opening is rotationally connected to the inner wall of the tank shell, and the first reciprocating lead screw is rotationally connected to the inner wall of the tank shell; in the rotating process of the material closing piece, blockage to the feeding pipe is lost, then sodium hydroxide is discharged from the material closing piece, then the sodium hydroxide is mixed with reciprocating movement of the spoiler under rotating stirring of the spraying head, smoke, ammonia water and sodium hydroxide in the material closing piece are mixed, reaction is promoted, and therefore formaldehyde generated by gas in plate machining is better removed.

The invention discloses a wastewater filtering treater, and relates to the technical field of wastewater filtering, the wastewater filtering treater comprises a filter and a multi-stage treatment assembly connected in series at one side of the filter, and further comprises a filter cartridge rotatably connected in the filter and used for filtering wastewater, a separation frame is movably connected between the front end of the filter cartridge and the filter, and a collection tank is arranged in the filter cartridge. A collecting cavity is formed between the inner wall of the filter and the filter cartridge, and the upper part of the collecting cavity is fixedly connected with a flushing pipe; a knocking assembly used for assisting in flushing impurities attached to the inner wall of the filter cylinder is arranged on the inner wall of the upper end of the filter and comprises a fixed cylinder fixedly connected to the inner wall of the upper end of the filter, a movable rod is movably connected into the fixed cylinder, and magnetic strips are fixedly connected to the outer wall of the filter cylinder in an annular array. Therefore, the adsorption capacity of impurities on the inner wall of the filter cartridge is reduced, the impurities attached to the inner wall of the filter cartridge can be washed off more easily, the smoothness of the filter cartridge is guaranteed, and the filtering effect of the filter cartridge is not affected.

The invention relates to the technical field of filtering, discloses a filter and a wind power gear box lubricating and cooling system applying the same, and solves the technical problems of complex structure and high manufacturing cost caused by independent configuration between a base and a bottom valve block. A filtered medium flow path temperature control distribution mechanism is arranged in the base, and the filtered medium flow path temperature control distribution mechanism distributes the filtered medium passing through the filtered medium flow collecting cavity into a first output channel and a second output channel through a temperature control valve set to be output respectively. The ratio of the flow of the filtered medium output through the first output channel to the flow of the filtered medium output through the second output channel is in positive correlation with the temperature of the filtered medium; the temperature control valve group is installed in the filtered medium flow collecting cavity and comprises a valve sleeve, a valve element and an elastic pre-tightening device. The overall structure of the filter is simplified, and the manufacturing cost is reduced.

The invention belongs to the technical field of sewage treatment, and particularly discloses a self-adaptive multi-medium composite filtering device and a filtering method thereof. The device comprises a multi-layer composite filter layer, a sensor, an automatic backwashing system and a control system, based on cooperative work of the multi-layer composite filter layer and an intelligent regulation and control system, after to-be-treated sewage is intercepted and adsorbed by the multi-layer filter layer in gradient distribution in a layered manner, the sensor collects water quality and filter layer state data in real time; and the intelligent control system dynamically adjusts the porosity of the filter layer based on preset logic, and triggers'on-demand backwashing ', so that efficient purification of complex water is realized. The problems of low efficiency, poor impact resistance and high backwashing energy consumption of a traditional filtering technology are solved, the effluent turbidity is smaller than or equal to 5 NTU, the COD removal rate is larger than or equal to 45%, the comprehensive operation cost is reduced by 40% or above, and the method is suitable for industrial sewage pretreatment, domestic sewage deep filtration and reclaimed water reuse.

The invention discloses equipment and a method for removing free calcium oxide in steel slag, adding acid, washing and circulating, and relates to the technical field of industrial solid waste recycling. The equipment comprises a multi-stage cleaning module, an acid liquor dynamic adjusting system, a water circulation filtering module and an intelligent control unit. Steel slag is sequentially fed into the pre-washing cavity section filled with water under pressure through the spiral conveying mechanism, a pickling solution prepared through ultrasonic waves is added into the neutralization reaction cavity section through the control valve, and the concentration of the pickling solution is regulated and controlled in real time in combination with the pH sensor. And the acid liquor is recycled by utilizing a centrifugal separation and membrane filtration technology or a flocculation precipitation technology. The innovativeness is as follows: ultrasonic oscillation and acid pickling are combined, so that the reaction efficiency of free CaO / MgO is improved; matching steel slag component characteristics by adopting a gradient pickling process; a combined pressurized water circulation system is developed to efficiently treat free calcium oxide and synchronously treat suspended matters and heavy metal ions; and the integrated intelligent control system realizes adaptive adjustment of process parameters.

The invention belongs to the technical field of filtration, and particularly relates to a double-backwash filtration system and method. The system comprises a water inlet pipe, a first branch water pipe, a second branch water pipe, an emergency water pipe, a pressurizing water pipe, a water outlet pipe, a water inlet ball valve, a pressurizing water ball valve, a branch water inlet butterfly valve, a backwashing filter, a branch water outlet butterfly valve and an emergency water butterfly valve. And non-stop maintenance is realized, the continuity and stability of system operation are remarkably improved, and production interruption caused by blockage of a single path is avoided. An emergency water pipe and a pressurizing water pipe are arranged, so that water source supplementation or switching to an emergency passage can be realized in time when water pressure of a main passage is insufficient or a filter is blocked, continuous water supply of external equipment is ensured, and the casting blank quality is effectively prevented from being influenced by water quality or water pressure problems.

The invention provides a bulk feed transport vehicle with an environment-friendly dust removal function, and belongs to the technical field of dust removal and filtration. Comprising a vehicle body, a feed tank is installed at the top of the vehicle body, a conveyor is installed on the feed tank, the conveyor is used for outputting feed in the feed tank, the dust removal mechanism comprises a round seat installed at a discharge port of the conveyor, the bottom of the round seat is communicated with a pipe fitting, and a rotating assembly is arranged on the surface of the round seat; the rotating assembly is used for driving the pipe fitting to be bent. By arranging the dust removal mechanism and the pipe fitting, the distance between the discharging port and the feeding port of the storage tank can be reduced, in the feeding process, the pipe fitting can reduce the contact area of feed and air, and therefore small particles are prevented from drifting in the air, environment protection is achieved, and if a small amount of feed drifts upwards, the feed can be discharged out of the storage tank through the pipe fitting. And drifting particles can be captured through the suction filtering assembly, small particles are prevented from drifting in the air again, and environment protection is further improved.

The utility model belongs to the technical field of medium filtering, and particularly relates to a filtering device of a horizontal sand mill, which comprises a material guiding bin, an operation bin is fixedly connected to the bottom end of the material guiding bin, a material discharging bin is fixedly connected to the bottom end of the operation bin, and a main filtering net and a standby filtering net are fixedly connected to the inner wall of the operation bin. A partition plate is fixedly connected between the main filter screen and the standby filter screen, a switching plate is arranged above the partition plate, a back-flushing cleaning seat is arranged in the material guiding bin, the top end of the back-flushing cleaning seat is fixedly connected with a plugging frame, and the top end of the back-flushing cleaning seat is fixedly connected with a flushing nozzle; through the cooperation of the switching plate, the backwashing cleaning seat and other components, the filter screen used for filtering can be switched and the blocked screen holes can be cleaned after the screen holes are blocked along with the proceeding of the filtering operation, so that the filtering operation can be continuously carried out, and the purpose of improving the filtering efficiency is achieved.

The invention discloses a sewage treatment device with a multi-stage filtering function. The sewage treatment device comprises a sewage inlet valve, one end of the sewage inlet valve is provided with a detection and filtering all-in-one machine, one end of the detection and filtering all-in-one machine is provided with a dual-mode conveying channel, and the dual-mode conveying channel is provided with a final-stage filter; the invention relates to the technical field of sewage multi-stage filtration, and has the beneficial effects that the device can detect the mass of large-volume impurities carried in sewage through the work of a detection and filtration all-in-one machine, the working mode of a dual-mode conveying channel can be adjusted according to the mass of the impurities carried in the sewage, and when the impurities are more, the sewage can be filtered by the dual-mode conveying channel. Sewage is deeply filtered through the gravity screening channel, the treatment effect is ensured, when impurities are few, the sewage directly passes through the straight-through channel, unnecessary filtering links are avoided, the sewage treatment efficiency is improved, energy consumption is reduced, the sewage treatment device adapts to sewage treatment work under different conditions, and the overall sewage treatment efficiency is improved.

The utility model relates to the technical field of air filtering, and discloses an air conditioner ventilation filtering pipeline which comprises a filtering opening, the bottom end of the inner wall of the filtering opening is fixedly connected with a collecting box, the middle of the top end of the filtering opening is slidably connected with a graphite plate, and the top end of the graphite plate is fixedly connected with a fixing block. A long block is fixedly connected to the top end of the fixing block, a fixing plate is fixedly connected to the top end of the long block, a filter screen is fixedly connected to the right side of the bottom end of the fixing block, a plurality of baffles are fixedly connected to the top end of the filter opening, and telescopic rods are fixedly connected to the right sides of the baffles. According to the air filter, after air is sucked in through the air inlet pipe, impurities are removed through the filter screen, then secondary filtering is conducted through the graphite plate, the graphite plate and the filter screen need to be cleaned or replaced regularly, the fixing block is pulled through the telescopic rod, the filtering mechanism can be easily disassembled and maintained, the air filtering efficiency is ensured, and saturation of the absorption capacity of the graphite plate is avoided.

The utility model relates to the technical field of wastewater filtering, in particular to a wastewater filtering device which comprises a lower filtering cylinder, an upper filtering cylinder is arranged at the top of the lower filtering cylinder, a lower supporting ring is arranged above the inner wall of the lower filtering cylinder, a lower filtering net is placed at the top of the lower supporting ring, an upper supporting ring is arranged below the inner wall of the upper filtering cylinder, and a lower filtering net is placed at the bottom of the upper supporting ring. An upper filter screen is arranged at the bottom of the upper supporting ring, upper fixing blocks are installed below the two sides of the upper filter cylinder, inserting blocks are installed at the bottoms of the upper fixing blocks, lower fixing blocks are installed above the two sides of the lower filter cylinder, inserting grooves connected with the inserting blocks in an inserted mode are formed in the tops of the lower fixing blocks, and the inserting blocks and bolts are detachably installed. Through the arrangement of the upper and lower support rings, the upper and lower filter screens are fixed between the upper and lower support rings after the upper and lower filter cartridges are fixedly mounted together, and after the upper and lower filter cartridges are separated, the upper and lower support rings are separated, so that the fixation of the upper and lower filter screens can be canceled, and the upper and lower filter screens can be conveniently cleaned and replaced.

The application provides a metal mesh reinforced primary efficiency filter device, and relates to the technical field of air filtration.The metal mesh reinforced primary efficiency filter device comprises a filter square tube, an air inlet square tube and a self-cleaning square tube, the filter square tube is connected with the air inlet square tube, the self-cleaning square tube is fixedly provided with a connecting square tube and a first air outlet square tube on both sides, and the connecting square tube is connected with the filter square tube;an airflow uniformizing plate is fixedly arranged in the air inlet square tube, a plurality of flow guide holes are formed in the airflow uniformizing plate, the diameters of the flow guide holes gradually decrease from the air inlet side to the air outlet side, the axes of the flow guide holes and the plate surface of the airflow uniformizing plate form an included angle of 15-25 DEG, three filter frames are arranged in the filter square tube, and the top of each filter frame extends to the upper side of the filter square tube.The application has the advantages of high filtration efficiency, long service life, reduced frequency of manual maintenance and self-cleaning function.

The utility model relates to the technical field of flue gas filtration, in particular to a special bag for waste incineration, which comprises a fixing ring, a mounting groove is arranged on the upper side of the fixing ring, a filter bag is fixedly arranged in the mounting groove, an embedding ring for fixing the filter bag is clamped in the filter bag, and limiting baffles distributed in an array are fixedly connected in the embedding ring. According to the utility model, the position of the filter bag can be supported and positioned together by utilizing the annular baffle frame, the reinforcing arc seat and the limiting baffle plate, so that the filter bag cannot swing and be bent due to the impact of flue gas; according to the special bag for waste incineration, it is ensured that the filter bag is always kept in an unfolded state to filter smoke, the filtering capacity of the special bag for waste incineration is improved, the embedded ring is clamped and fixed through the clamping sliding rod and the L-shaped inserting plate, in this way, the filter bag is fixed through the embedded ring in a clamping mode, and a new filter bag can be replaced conveniently.

The invention relates to the technical field of filtering, in particular to a multilayer air filtering device for an air compressor, which comprises an annular pipe, an air inlet pipe, an air outlet pipe, a filter element, an electromagnetic valve and the like, the middles of the two sides of the annular pipe communicate with an air inlet pipe and an air outlet pipe; the air inlet pipe is aligned with the air outlet pipe; the interior of the annular pipe is divided into a first flow channel and a second flow channel with the axis of the air inlet pipe as a boundary, and the first flow channel and the second flow channel communicate with each other. A filter element is mounted in the first flow channel; electromagnetic valves are mounted at two ends of the first flow channel, and the two electromagnetic valves are respectively used for controlling the first flow channel to be disconnected with and communicated with the air inlet pipe and the air outlet pipe; a structure which is the same as that of the first flow channel is mounted in the second flow channel, and the structures in the first flow channel and the second flow channel are symmetrically arranged. By arranging the first flow channel, the second flow channel and the electromagnetic valve for control, when the filter element of one flow channel is blocked, the clean filter element of the other flow channel can be quickly switched to continue working, shutdown cleaning or filter element replacement is avoided, and production continuity is guaranteed.

The utility model relates to the technical field of gas-electricity hybrid water heater filtering, in particular to a gas and electricity hybrid water heating device which comprises a filtering box, a water inlet connector is fixedly connected to the top of the filtering box, a valve is fixedly arranged outside the water inlet connector, and a waterproof box is fixedly connected to the interior of the filtering box. Stirring assemblies are fixedly arranged in the filter box and the waterproof box, cleaning assemblies are fixedly arranged below the stirring assemblies, vibration assemblies are symmetrically and fixedly arranged in the filter box, first filter screens are fixedly arranged at the tops of the vibration assemblies, fixing blocks are fixedly arranged at the tops of the first filter screens, and sterilizing lamps are symmetrically and fixedly connected to the top surface in the filter box; according to the scheme, the stirring assembly is arranged, so that water and disinfectant are conveniently stirred in time, and the water is conveniently sterilized and disinfected; meanwhile, the first filter screen can be cleaned without dead angles in cooperation with the cleaning assembly, so that it is guaranteed that the first filter screen cannot be blocked, domestic water can be kept clean and tidy, and a user can use the domestic water more safely and trustingly.

The invention relates to the technical field of solid-liquid filtering, in particular to a plastic flexibilizer mixed solid-liquid filtering device which comprises a supporting frame, a filtering piece arranged on the supporting frame, a power piece arranged on the outer wall of the filtering piece and an extrusion piece arranged on the lower portion of the filtering piece. The filtering piece comprises a material storage pipe arranged at the upper part of the supporting frame, and a sealing pipe is arranged at the lower part of the material storage pipe; the power part comprises a U-shaped pipe arranged on the outer wall of the material storage pipe, an ejector rod is arranged at the end of the U-shaped pipe, and an extension plate is arranged on the side wall of the ejector rod. The extrusion part comprises a closed circular plate arranged on the lower portion of the closed pipe, the ejector rod in the extending end of the U-shaped pipe is driven to move upwards through pressure generated when the filtering part is fed, the ejector rod moves upwards to drive the closed circular plate and the silo which are connected with the ejector rod to move upwards to extrude mixed materials inside, and the solid-liquid mixed materials are extruded forcibly to accelerate the filtering efficiency.

This utility model discloses a solid-liquid separation diatomaceous earth filtration system, relating to the field of filtration technology. It includes: a coating tank for storing a liquid mixed with diatomaceous earth, a coating circulation pipeline, and a raw liquid tank, a delivery pump, a filter cartridge, and a purified liquid tank connected in sequence. The filter cartridge is vertically arranged inside the cartridge. A drain port and a liquid inlet pipeline are provided at the bottom of the cartridge, and an outlet pipeline and a cleaning pipeline, both connected to the filter cartridge, are provided at the top. A drain valve is provided at the drain port. The top of the inner cavity of the cartridge is connected to a first air supply pipeline, and the bottom of the inner cavity is connected to a pressure return pipeline. The bottom of the coating tank is connected to the liquid inlet channel of the cartridge via a circulation pump. One end of the coating circulation pipeline is located inside the coating tank, and the other end is connected to the filter cartridge. In this utility model, the filter cartridge is coated with soil using the coating tank. Gas supplied through the first air supply pipeline forces the raw liquid inside the cartridge into the pressure return pipeline, saving raw liquid resources and improving the regeneration effect of the filter cartridge.

The utility model relates to the technical field of air filtration, and discloses a filter screen with a thermoplastic elastomer rubber coating structure, which comprises a filter screen shell body, a first rubber coating piece and a second rubber coating piece, and the first rubber coating piece and the second rubber coating piece are made of thermoplastic elastomer materials. The first rubber coating part and the second rubber coating part are integrally formed with the filter screen shell body through an injection molding process, the first rubber coating part and the second rubber coating part respectively coat the outer surfaces of the two opposite sides of the filter screen shell body, and the rubber coating part on at least one side extends to an assembly contact area on the outer side of the filter screen shell body; a groove is formed in the surface of the outer side of the filter screen shell body, and the first rubber coating piece is filled in the groove and extends to the outer side of the groove. The filter screen with the thermoplastic elastomer rubber coating structure has the advantages that sealing is achieved through thermoplastic elastomer rubber coating, the rubber coating is installed on the surface of a plastic part in a thermoplastic forming mode, and the situation that the overall using effect of a device is reduced due to secondary pasting is avoided.

The utility model relates to a fuel filter, which belongs to the technical field of fuel filtration and comprises a filter tank, a filter cooling mechanism is arranged in the filter tank and comprises a feed pipe fixedly mounted at the top of the filter tank, and a flow guide seat is fixedly mounted at the bottom of the filter tank. And a fixed plate is fixedly mounted in the filter box. According to the fuel oil filtering machine, fuel oil is fed into the filtering box through the feeding pipe, then the fuel oil is preliminarily filtered through the filtering plate, the fuel oil is extracted through the liquid extraction pump, and the fuel oil is fed into the left side of the partition plate through the circulating pipe, so that the fuel oil is fed into the filtering and permeating layer through the circulating pipe, and the fuel oil is filtered and purified again through the filtering and permeating layer; and finally, the fuel oil can be fed into the cooling pipe, the fuel oil in the cooling pipe can be rapidly cooled through cooling liquid in the cooling box, after the fuel oil is filtered and cooled, the filtering box can be opened, garbage impurities in the filtering box can be taken out, and recycling is convenient.

The utility model discloses a kind of grinding fluid filtering devices and grinding machines, belong to grinding fluid filtering technical field, grinding fluid filtering device includes the cabinet for containing grinding fluid and the conveyor belt being set on cabinet, further include being set on cabinet: sedimentation tank, located above conveyor belt, sedimentation tank includes first liquid inlet pipe and baffle, baffle is set in sedimentation tank, and through hole is opened in sedimentation tank bottom;Paper reel box, located at one end of conveyor belt, filter paper is arranged in paper reel box, filter paper is wound and set in paper reel box, and the end of filter paper is located on conveyor belt, and conveyor belt is conveyed to filter paper below sedimentation tank;Fine filter, located at the side of paper reel box away from sedimentation tank, fine filter includes filter core and liquid outlet pipe, filter core is set in fine filter interior, and liquid outlet pipe is used to discharge grinding fluid that filtering is completed from cabinet. The present application improves the cleanliness of grinding fluid by the way of multistage filtration, thereby improves the grinding quality of workpiece.