590 results about "Filtration technique" patented technology

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 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 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 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 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.

This invention discloses a sewage filtration device and treatment method for river management, relating to the field of sewage filtration technology. It includes an outer casing, a filtration component, a collection component, and a chemical treatment component. The filtration component includes a filter belt, and the collection component includes a collection box with several connecting pipes at its bottom. A switching mechanism is located inside the outer casing. The chemical treatment component includes a water pump, a first liquid tank, a second liquid tank, and a chemical tank. A first control mechanism is located inside the second liquid tank, and a second control mechanism is located inside the first liquid tank. This invention uses several collection boxes mounted on a rotating shaft to facilitate automatic switching of the collection boxes. During switching, it facilitates the compression and dewatering of solid impurities inside the collection boxes. A dosing component allows for the automatic addition of chemicals to the second liquid tank, and an aerator ensures thorough mixing of the sewage and chemicals.

The invention discloses an efficient sulfur concentrate filtering system and a filtering method thereof, and belongs to the technical field of sulfur concentrate filtering, the system comprises a ceramic filtering assembly, a vacuum generation assembly, a material concentration adjusting mechanism, a material level control mechanism, a main shaft rotating speed adjusting mechanism, a backwashing unit and an automatic control unit. According to the efficient sulfur concentrate filtering system and the filtering method thereof, the micropore design of the ceramic filtering plate is optimized, the vacuum pump system and the jet device are used in a combined mode, the material concentration is adjusted, the material level is controlled, the proper rotating speed of the main shaft is set, backwashing is optimized, and automatic control is achieved; the problems of time and labor consumption, high cost, low filtering efficiency and the like of cleaning and replacing a filter element of a traditional filter are solved, and the aims of reducing the production cost and the labor intensity of workers, improving the filtering efficiency of sulfur concentrate, meeting the requirements of customers on the water content of products and avoiding the influence of metering deviation on sales benefits are achieved.

The utility model relates to the technical field of air filtration, in particular to a low-resistance high-efficiency air filter which comprises a low-resistance high-efficiency air filter main body, a slot is formed in the low-resistance high-efficiency air filter main body, a filter element bracket is vertically inserted into the slot, a handle is arranged at the top of the filter element bracket, and a filter element is arranged in the filter element bracket. Mounting holes are formed in the two sides of the upper end of the inserting groove, and two positioning mechanisms are arranged at the upper end of the filter element support. According to the utility model, the two L-shaped push plates are simultaneously pushed to move in opposite directions, so that the positioning pin head of the positioning mechanism is separated from the mounting hole, and then the filter element bracket can be taken out to replace or clean the filter element, so that the air is conveniently filtered by the filter.

The utility model relates to waste liquid filtration technical field, concretely relates to a kind of high-efficiency filtering mechanism of nine knife head cutting machine, applied to the liquid inlet of filter box, including the cylinder and filter ball connected with each other, the cylinder is inserted in the liquid inlet on the box, the filter ball is exposed outside the liquid inlet, the filter ball includes round plate and connecting ring, and multiple arc rods are welded between round plate and connecting ring circumferentially, to form the spherical structure of closed and bottom end opening, and there is interval between the adjacent two arc rods to form filter gap, so that filter ball can circumferentially filter the debris and waste in cutting process. The utility model, by setting filter ball, increase the filtering area, if debris and waste are many, can form accumulation in bottom, and do not affect the filtering effect of upper half, can effectively filter the debris and waste generated in cutting process, prevent clogging, reduce the work intensity of production staff.

The application relates to an automatic air filtering device of an air suspension centrifugal blower, and relates to the technical field of air filtering, which comprises a machine body and filter cloth, the machine body is provided with an air inlet groove, the top wall and the bottom wall of the air inlet groove are provided with mounting grooves, first mounting rollers and second mounting rollers are rotationally arranged in the mounting grooves, the first mounting rollers and the second mounting rollers are arranged on the upper and lower sides of the air inlet groove, the filter cloth is arranged around the first mounting rollers and the second mounting rollers, the filter cloth passes through the air inlet groove, and the inner wall of the air inlet groove is provided with a protective net capable of covering the air inlet groove. The application has the effect of reducing the possibility of filtering function failure.

The utility model relates to the technical field of glue filtering, in particular to a filtering device for glue production, which solves the problems during cleaning of the glue filtering device and comprises a container, a stepped hole is formed in the bottom of the container, the diameter of an inner section of the stepped hole is small, the diameter of an outer section of the stepped hole is large, and a filter screen is mounted in the outer section of the stepped hole. The diameter of the filter screen is larger than that of the inner section of the stepped hole, a stop block with the adjustable position is installed at the bottom of the container, whether the filter screen is blocked or not can be switched by adjusting the position of the stop block, the filter screen can be directly disengaged from the stepped hole when the stop block is adjusted to the position where the filter screen is not blocked, and a plurality of connecting shafts are arranged at the bottom of the container. The baffle block is rotationally connected with the connecting shaft, the baffle block is rotated by taking the connecting shaft as a shaft so as to adjust the position of the baffle block, a scraper for scraping the end surface of the filter screen is detachably mounted on the filter screen, a mounting shaft is arranged in the middle of the filter screen, a sleeve is arranged in the middle of the scraper, and the sleeve can be mounted outside the mounting shaft.

The invention relates to the technical field of air filtration, discloses a high-temperature-resistant efficient filter, and aims to solve the problems that an organic filter material of a traditional filter is poor in temperature resistance, ceramic fibers are high in brittleness and high in cost, and an existing filter element is insufficient in support, uneven in flow field and prone to failure at high temperature, so that the performance is reduced at the temperature of 400 DEG C or above. The filter comprises a stainless steel outer frame which is encircled and fixed by a plurality of plate bodies; the metal filter screen is arranged on the outer side of the air inlet side of the outer frame; the filter element is arranged in the outer frame and is formed by alternately stacking glass fiber filter paper and aluminum foil; the sealant is injected into the junction of the edge of the filter element and the outer frame. In addition, the aluminum foil wave crest can be provided with a filiform reinforcing structure and a quartz fiber functional layer. The H13-level filtering efficiency at the instant high temperature of 550 DEG C is achieved, the structural stability, the sealing reliability and the low airflow resistance are all considered, and the service life is prolonged.

The utility model discloses a multi-layer activated carbon pure water filtering device, which relates to the technical field of pure water filtering, and comprises a filtering tank, a filtering mechanism is clamped at the upper end of the filtering tank, and a tank body packaging mechanism is locked at the upper end of the filtering tank. In order to solve the problems that in the prior art, the filtering effect is poor, and if filter plates with the same area are used in an overlapped mode, a precise filtering position at the rearmost end is clamped, a filtering tank and a filtering mechanism are arranged in a matched mode and staggered in a high-low mode, so that water can be filtered under the action of gravity and flows out to the outer layer; the filter area of the outer-layer activated carbon filter screen is larger than that of the inner-layer activated carbon filter screen, the filter efficiency of pure water is not affected, meanwhile, the filter screens can be extruded and fixed through lock catch connection of the packaging cover and the external tank body, and the situation that the lower ends of the activated carbon filter screens are disengaged to affect the filter effect is prevented.

The utility model relates to the technical field of electroplate liquid filtering, in particular to a circulating electroplate liquid filtering device on the surface of the lower part of a rack plating piece product, which comprises a filtering box, a liquid discharge pipe is arranged at the bottom of one side of the filtering box, a box door is arranged on one side of the filtering box, the box door is connected with the filtering box through a hinge, and a support frame is arranged at the top end of the filtering box. Used electroplating liquid enters the filtering box through the flow dividing pipe, the electroplating liquid can be evenly sprayed to the filtering plate through the flow dividing pipe to be filtered, the electroplating liquid is filtered through the filtering net, the filtered electroplating liquid is left at the bottom of the filtering box and discharged through the liquid discharging pipe to be continuously used, long-time sedimentation is not needed, and the filtering efficiency is improved; a brush plate is regularly driven through a threaded rod and a moving block, so that the brush plate can sweep impurities on the filter plate into the storage basket, the filter plate is prevented from being blocked to influence the filtering efficiency, the filter plate does not need to be manually and frequently cleaned, the working intensity is reduced, and the practicability is higher.

The present application relates to the technical field of filtration and discloses a raw water filter, which comprises a tank body, a first hole plate and a second hole plate, a fiber bundle assembly, a driving assembly and a flushing assembly, the first hole plate and the second hole plate are arranged in the tank body in a direction along a central axis of the tank body and are spaced apart from each other, a filter chamber is formed at the spacing, the driving assembly is used for driving the first hole plate to move reciprocally along a height direction of the tank body and to rotate around the central axis of the tank body, the fiber bundle assembly is arranged between the first hole plate and the second hole plate, and rotation and / or movement of the first hole plate can cause the fiber bundle assembly to deform so as to change a porosity of the fiber bundle assembly, and the flushing assembly is used for spraying cleaning medium to clean impurities on the fiber bundle assembly. The raw water filter of the embodiment of the present application realizes further compression and stretching of the fiber bundle during filtration and backwashing, and improves filtration effect and self-cleaning effect.

The invention discloses a waste water environment-friendly treatment device and method for precise instrument production, and relates to the technical field of filtering, the waste water environment-friendly treatment device comprises a top cover and a waste water inlet hole, a filtering device is arranged outside the top cover, the filtering device comprises a pretreatment tank, a first-stage filtering plate, a second-stage filtering plate and a third-stage filtering plate, the top end of the pretreatment tank is matched with the top cover, and the top end of the pretreatment tank is matched with the waste water inlet hole. The bottom end of the pretreatment tank is fixedly connected with a servo motor, the output end of the servo motor is fixedly connected with a transmission block, one end of the transmission block is fixedly connected with a fixing rod, one end of the fixing rod is fixedly connected with an assembly block, and one end of the assembly block is fixedly connected with a vertical rod. The problems that a traditional environment-friendly wastewater treatment device generally only adopts basic physical separation methods such as precipitation-filtration and the like or a single chemical neutralization / oxidation process, and the methods are weak in pollutant removal targeting and poor in synergism, so that the overall treatment effect is large in fluctuation and the wastewater treatment effect is poor are solved.

The utility model relates to chemical material filtering technical field, concretely provides a kind of circulating filter device, including filter box and feeding tank, material conveying pipe and circulating pump;Filter box is opened with input and output, and output is communicated with input by material conveying pipeline;Feeding tank and circulating pump are connected in material conveying pipe;Filter bag, deflector are provided in filter box;Filter bag is set on the position of input corresponding to filter box inner wall;Multiple deflectors are layered interval arrangement along the height direction of filter box, one of adjacent two deflectors is connected to the inner wall of one side of filter box, another is connected to the inner wall of other side, and adjacent two deflectors are cross distribution on vertical projection plane, and deflector is inclined downward and is provided with first filter screen.The utility model realizes the circulation of material in filter box by material conveying pipe and circulating pump, and the multistage filtering mechanism of filter bag, deflector and first filter screen is constructed, and the filtering effect and efficiency are improved.

The utility model discloses a water supply and drainage filtering structure, which relates to the technical field of water supply and drainage filtering and comprises a filtering assembly, and the filtering assembly comprises a rectangular top frame, a C-shaped filtering frame, a filtering bottom plate, an inclined filtering plate, an arc-shaped guide plate and an inclined guide plate. Rainwater can be efficiently filtered by arranging the filtering assembly, impurities are collected in the area below the C-shaped filtering frame, and when the area below the C-shaped filtering frame is filled with much impurities and rainwater cannot be discharged in time, the rainwater can be discharged through a similar S-shaped channel formed by the inclined filtering plate, the arc-shaped guide plate and the inclined guide plate. Leaves in the area below the C-shaped filter frame can be prevented from floating to the area of the inclined filter plate, so that the C-shaped filter frame is located on the inclined guide plate, the area above the inclined filter plate and the upper surface of the inclined filter plate are kept in a few-impurity state, certain drainage capacity is kept, and the situation that rainwater cannot be drained due to complete blockage is avoided; the drainage effect of the filtering assembly is effectively improved.

The invention belongs to the technical field of chemical vapor deposition, and particularly relates to a CVD (chemical vapor deposition) high-purity gas filtering and reducing method which comprises the following steps: S1, gas pretreatment: firstly, carrying out particle filtering on gas, then, carrying out condensation and water removal on the gas, and then, carrying out adsorption and oxygen removal on the gas; s2, filtering: carrying out membrane filtration on the gas subjected to adsorption deoxygenation, then carrying out magnetic control adsorption separation on the gas, and then carrying out catalytic filtration on the gas; s3, reduction reaction: selecting a reducing gas, and then carrying out mixed reduction reaction on the catalytically filtered gas and the reducing gas by utilizing a reactor; and S4, quality monitoring and control: monitoring the parameters of the reduced gas in real time, and then controlling the system according to the monitored data. An efficient membrane filtration technology is adopted, a cross-flow filtration mode is combined, operation is carried out under appropriate pressure and temperature conditions, and compared with a traditional filtration technology, the filtration treatment capacity of gas in unit time is remarkably improved.

The application relates to the technical field of filtration, and discloses a dynamic polarization filtering device, which comprises an electric field generating device, a filtering module and a voltage source; the electric field generating device is suitable for forming an electric field; the filtering module is arranged in the electric field; the voltage source is electrically connected with the electric field generating device, is suitable for loading voltage for the electric field generating device, and controls the electric field generating device to periodically change the direction of the electric field around the outer periphery of the filtering module, the dynamic change of the electric field direction with time is realized by the electric field, the change of the direction of the electric field force on the particulate matters is regulated, the captured particles can be uniformly deposited on the filtering module, the particulate matter capturing area and the particulate matter capturing amount are increased, and the captured particles can be more closely accumulated on the filtering module.