47results about How to "Restore filter capacity" patented technology

The invention discloses a reverse osmosis membrane silicon scale cleaning agent formula which comprises the following components in percentage by mass: 10-25% of an inorganic acid cleaning agent, 1-5% of a dispersing agent, 2-8% of an inorganic surfactant, 0.1-0.5% of a corrosion inhibitor, 3-10% of a multivalent chelating agent, 1-5% of a defoaming agent, 0.1-0.5% of a stabilizer and the balance of a pH regulator. The cleaning agent comprises the following components in percentage by weight: 0.1-0.3% of a defoaming agent, 0.1-0.3% of a stabilizer, 0.1-0.5% of a pH regulator The method has the beneficial effects that silicon scale on the surface of the reverse osmosis membrane can be efficiently removed, the filtering performance and the water permeability of the membrane are recovered, meanwhile, membrane elements are prevented from being damaged, and the safety and the purity of water are guaranteed; the cleaning agent provided by the invention has the advantages of environmental protection, safety, good stability and the like, and is suitable for cleaning various reverse osmosis membrane silicon scales.

The invention discloses an intelligent control matrix pressure filtration device, which comprises a rack, an extrusion mechanism, a filtration mechanism and a conveying mechanism, and is characterized in that the rack comprises a pressure filtration frame, a support plate and a machine base which are respectively arranged from top to bottom, and the pressure filtration frame and the machine base are respectively and fixedly connected to the upper side and the lower side of the support plate; the extrusion mechanism comprises a plurality of filter pressing assemblies and a plurality of water tanks which are annularly distributed in a filter pressing frame at equal intervals, the filter pressing assemblies are symmetrical in pairs, an air pump is arranged at the top of the filter pressing frame and fixedly connected with the filter pressing assemblies through air pressure pipes, and adjustable spray heads are arranged at the bottoms of the water tanks; by arranging the extruding mechanism and the filtering mechanism, materials are extruded through air pressure generated by the air pump, so that continuous and stable extruding force is generated, the materials are filtered through the filter screen, and meanwhile, the filter screen is cleaned through the spray head, so that the filtering performance of the filter screen is recovered.

The utility model provides a filtering device for waste gas detection, which relates to the technical field of filtering devices and comprises a bottom plate, the top of the bottom plate is fixedly connected with a filtering tank, the outer surface wall of the filtering tank is fixedly communicated with two spraying pipes, and the outer surface walls of the two spraying pipes are fixedly communicated with a plurality of nozzles. A conveying pipe fixedly communicates between the input ends of the two spraying pipes, the input end of the conveying pipe fixedly communicates with a water pump, and the input end of the water pump fixedly communicates with a water tank. According to the waste gas purification device disclosed by the utility model, multiple filtration treatment on waste gas is realized under the interaction of all components of the device, so that the purification efficiency of the waste gas is remarkably improved, the potential harm of the waste gas to the environment is reduced, and water vapor in the waste gas is effectively removed through multiple means such as spraying, baffle plate interception and wire mesh defoaming; and the accuracy and reliability of waste gas detection are ensured.

The invention discloses a glass product delivery cleaning device, and relates to the technical field of glass product production equipment.The glass product delivery cleaning device comprises a main body, first rotating shafts are rotationally connected to the two ends of the main body correspondingly, a first mounting base is fixedly connected to the outer surface of one end of the main body, and a first servo motor is fixedly connected to the middle of the first mounting base; and the output end of the first servo motor is fixedly connected with a group of first rotating shafts. According to the glass product cleaning device, three sets of air inlet pipes are arranged, two sets of second motors are arranged in each set of air inlet pipes, the second motors drive fan blades to rotate, so that outside air enters a space defined by the main body, the side plates and the top plate from the air inlet pipes, when the air penetrates through the air inlet pipes, the air is heated by a heating plate, the temperature can be increased, and after glass products are cleaned, the temperature is increased. Under the driving of the chain type conveyor belt, the high-temperature air continues to move, so that the high-temperature air can pass through the surfaces of the glass products, evaporation of moisture on the surfaces of the glass products is accelerated, and procedures are reduced.

The invention relates to the field of sewage filtering equipment, and discloses a sewage filtering device and method for a building construction site, the sewage filtering device comprises a first underframe, a second underframe on the right side of the first underframe, and a third underframe on the left side of the first underframe, the upper end of the first underframe is fixedly connected with a sedimentation tank, and the upper end of the sedimentation tank is fixedly connected with a coarse filtering tank. According to the sewage filtering device and method for the building construction site, by arranging multi-stage treatment structures such as the coarse filter tank, the sedimentation tank, the oil-water separation tank, the fine filter and the disinfection tank, pollutants of different types and particle sizes in sewage of the building construction site can be gradually removed; a filter grating, a first filter screen and a second filter screen in the coarse filter tank can effectively intercept impurity particles from large to small, a shell bottom and a spoiler of the sedimentation tank can efficiently settle heavy particles such as silt, and a plurality of filter layers with different particle sizes and materials in the fine filter can further remove residual fine particles and soluble pollutants. The overall filtering quality of the sewage is obviously improved.

The utility model relates to a candlewick type melt filtering device which comprises a filtering chamber, a feeding pipe, a discharging pipe and a slag discharging pipe, each filter in the filter chamber is in threaded connection with the lower part of the hollow material collecting disc and is communicated with the interior of a cavity of the material collecting disc; the filter comprises a central perforated filter element, a flexible metal filter screen and a hoop framework, the outer side of the perforated filter element is sleeved with the flexible metal filter screen, the flexible metal filter screen is sleeved with the hoop framework, the flexible metal filter screen is a long-barrel-shaped thin-wall metal net in a natural state, and the thin wall of the metal net extends in a continuous inwards-concave outwards-convex wavy mode in the circumferential direction. The upper and lower ends of the flexible metal filter screen are fixed at the upper and lower ends of the hoop framework, and the middle part of the flexible metal filter screen covers the inner side of the hoop framework. According to the device, on the basis that the filtering effect is improved, a filter cake can be rapidly expanded, cracked and broken, so that the filter cake is rapidly separated from the filter, the filtering effect of the filter is rapidly recovered, the use length of the filter is obviously increased, and the melt efficiency is improved by reducing the replacement frequency of the filter.

The present application relates to a skirtless end cap structure and a reverse osmosis membrane element, and relates to the field of reverse osmosis membrane, which includes an end cap, which includes an intermediate ring sleeve, an outer ring sleeve and a plurality of ribs, the intermediate ring sleeve is coaxially arranged with the outer ring sleeve, the ribs are radially extended along the intermediate ring sleeve, each rib is evenly arranged around the circumference of the intermediate ring sleeve, and the two ends of the ribs are respectively fixedly connected to the outer peripheral surface of the intermediate ring sleeve and the inner peripheral surface of the outer ring sleeve; the outer peripheral surface of the outer ring sleeve is provided with at least three axially spaced interlocking grooves, and the axial distance between the surface of the ribs and one end face of the outer ring sleeve is 1-3mm. The present application can reduce the constraints on large-diameter membrane units and reduce the occurrence of glass fiber embedding due to excessive gaps.

The utility model provides multi-stage filtering equipment for tail gas treating fluid, and belongs to the technical field of tail gas treating fluid. The tail gas treatment liquid multi-stage filtering equipment comprises a shell, the shell comprises a shell body, a top end opening is formed in the top of the shell body, a top cover is arranged at the top of the top end opening, a feeding port is formed in one side of the top end of the shell body, a feeding assembly is fixedly installed on one side of the feeding port, a discharging port is formed in the bottom of the shell body, and a discharging assembly is fixedly installed on one side of the discharging port. A discharging assembly is fixedly installed at the bottom of the discharging opening, a filter piece inserting groove is formed in one side of the middle of the shell, two filter piece assemblies are arranged in the filter piece inserting groove, the top cover comprises a cover body and a filter screen, the cross section of the filter screen is of a W-shaped structure, and a fixing ring is fixedly installed on the outer side of the filter screen. According to the tail gas treatment liquid filtering device, tail gas treatment liquid can be subjected to multi-stage filtering, the filtering capacity can be rapidly recovered, and the tail gas treatment liquid filtering device has high practical value.

The present invention belongs to the technical field of clothing manufacturing equipment, and in particular to a dust removal device for textile machinery and a method of using the same, comprising a clothing manufacturing machine, a top plate fixed on the upper surface of the clothing manufacturing machine, and a dust cover screwed to the surface of the top plate, the surface of the top plate being screwed to a dust removal fan, and the interior of the dust cover being provided with a dust removal mechanism. The device is provided with a dust removal mechanism, and can intercept and filter the generated cotton wool and fine fibers as well as dust in the air, thereby greatly improving the working environment and reducing the dust content in the air. The device can automatically clean the surface of the dust filter element to ensure the filtering effect of the dust filter element, and avoid dust backflowing back into the work workshop to cause pollution to the working environment, thereby creating a cleaner, healthier and more comfortable working environment for workers, helping to improve the work enthusiasm and work efficiency of workers, and reducing health problems such as respiratory diseases caused by dust.

The invention discloses a method for improving the leaching rate of uranium ore, which can perform controllable shock wave operation in a well or a small number of wells to unblock and increase gaps in a mining area, and shock waves impact off fine particulate matters such as sand, rock powder and the like and precipitated blockages such as chemical precipitates such as calcium, magnesium, aluminum and the like attached in rock stratum gaps of the uranium ore, so that the leaching rate of the uranium ore is improved. Fine particles attached to the filter screen are vibrated off and peeled off; the in-situ leaching liquid is injected after being heated to a certain temperature, and the heated in-situ leaching liquid flows into the uranium mine rock stratum gap. The method improves the leaching rate of uranium ore, can operate at any time for a long time, achieves a continuous effect, improves the uranium well oil extraction efficiency by 10% or above, has a wide application prospect, and has great significance for improving uranium ore strategic material storage in the nuclear industry in China.

This invention discloses a solid-liquid separation device and method for red mud treatment, relating to the field of solid-liquid separation technology. The invention includes a base, a sedimentation tank fixedly connected to the top of the base, an inlet pipe fixedly connected to the top of the sedimentation tank, a separation mechanism on the top of the base, a rinsing mechanism on the front of the separation mechanism, and a squeezing mechanism on the top of the base. The invention uses an external controller to start a first motor, driving a rotating shaft and a sliding plate to rotate slowly. Under the buoyancy of the float, the sliding plate and its extraction unit remain suspended on the surface of the supernatant, effectively avoiding interference from the thick sludge at the bottom. Then, a first water pump is started, and the clear supernatant is extracted and transported to a storage tank via a flexible first pipe and a first and second rotary joint that can adapt to rotation. This ensures the quality of the supernatant recovery and provides convenience for subsequent rinsing or reuse. Simultaneously, the rotary design avoids disturbance to the settling interface.

This utility model relates to the field of roadbed drainage technology and discloses a roadbed drainage structure for municipal road construction, including a drainage box for placement at a drainage outlet. The box has openings at its top, left, and right ends, and a placement groove with a rainwater grate installed at the top opening. Two sets of fixing grooves are vertically arranged opposite each other inside the drainage box. Filter plates are detachably inserted into both sets of fixing grooves, with the filter holes of the two filter plates facing the left and right ends of the drainage box, respectively. The opposite sidewalls of the placement grooves abut against the sidewalls of the two filter plates. A receiving plate is located at the bottom of the drainage box between the two filter plates, and an extension frame is provided at its top. The opposite sidewalls of the extension frame are provided with several permeable holes. This utility model allows for easy disassembly of the filter structure, thereby achieving thorough removal of sticky substances.

The utility model provides a kind of blowback filter device, it is related to air filtration and ash removal device technical field, including the filter element mounting plate for the filter device is installed to external container interface and supports filter element, at least two filter elements are installed and extend downward in the board face below of filter element mounting plate, the board face above of filter element mounting plate is fixed in exhaust box, gas ring is further equipped on the exhaust box, main air inlet pipe is equipped on the side of gas ring and is communicated with gas ring, the blowback pipe is equipped with multiple and corresponds with filter element quantity, one end of the multiple blowback pipes is fixed and communicated with the gas ring, and the other end of the multiple blowback pipes sequentially passes through exhaust box and filter element mounting plate and extends into the internal cavity of the filter element. The technical scheme can solve the problems of complex blowback gas circuit, high installation control cost of pipeline and valve, poor cleaning effect of filter element and low cleaning efficiency in the prior art.

A dust falling device for a metal mine roadway comprises a filtering dust falling mechanism and a spraying dust falling mechanism. The filtering and dust-falling mechanism comprises at least one rotating cylinder rotationally arranged in the roadway, the rotating cylinder is perpendicular to the bottom of the roadway, a dust-falling filter screen is wound around the rotating cylinder, and the free end of the dust-falling filter screen is connected with a filter screen driving assembly used for removing the dust-falling filter screen from the rotating cylinder. The filter screen driving assembly can drive the dust falling filter screen to move to be perpendicular to the length direction of the roadway after removing the dust falling filter screen. The spraying dust-falling mechanism comprises at least one spraying pipe horizontally arranged above the filtering dust-falling mechanism, a plurality of main spraying heads are arranged on the peripheral side wall of the spraying pipe in a communicating mode, and the spraying pipe is communicated with a water supply assembly used for conveying clean water into the spraying pipe. According to the dust falling device and method for the metal mine roadway, the filtering dust falling mechanism and the spraying dust falling mechanism are arranged and can operate independently or cooperate with each other, and the better dust falling effect is achieved.

The invention provides an efficient recovery method of waste alkaline water containing vinyl chloride in synthesis of vinyl chloride through a calcium carbide method, belongs to the technical field of waste alkaline water recovery, and solves the problem that waste alkaline water cannot be efficiently recovered in the synthesis process of vinyl chloride. The reboiler is connected with a wastewater cooler, a wastewater neutralizing tank, a primary sedimentation tank, a secondary sedimentation tank, a sludge tank and a clean water tank, and the clean water tank is respectively connected with two activated carbon filters, an RO (Reverse Osmosis) water inlet tank, a reverse osmosis device, an RO water producing tank, a mixed bed and a circulating water tank; after alkali liquor-containing wastewater is subjected to steam stripping, qualified water is recycled after being treated by devices such as sedimentation, filter pressing, activated carbon filtration, reverse osmosis, a decarburization tower and a mixed bed. According to the method, the recycling of the waste alkaline water containing the vinyl chloride is realized, meanwhile, the recycling of the vinyl chloride is realized, the production operation cost is reduced, the zero discharge of the wastewater is realized, and good economic benefits and social benefits are obtained.

The invention provides a cleaning method for combined pollution of an MBR (Membrane Bioreactor) membrane. The cleaning method for combined pollution of the MBR membrane comprises the following steps: firstly, soaking and cleaning the MBR membrane for the first time by using an acid solution, and then soaking and cleaning the MBR membrane for the second time by using an alkaline sodium hypochlorite solution; wherein the pH value of the acidic solution is 1-4, the available chlorine concentration of the alkaline sodium hypochlorite solution is 1000-5000 mg / L, and the pH value of the alkaline sodium hypochlorite solution is 10-13. According to the cleaning method disclosed by the invention, the acid solution is firstly used for soaking and cleaning so as to effectively remove inorganic pollutants on the MBR membrane and destroy connection among inorganic matters, organic matters and microorganisms, and then the alkaline sodium hypochlorite solution is used for soaking and cleaning so as to effectively remove organic matters and microbial pollution on the MBR membrane; and the composite membrane formed by interaction of inorganic matters, organic matters and microorganisms has a good pollution removal effect, and the filtration performance of the MBR membrane can be recovered.

The utility model provides a multi-stage filtering type quartz sand filter and belongs to the technical field of filters. Comprising a filter body; the filtering water inlet is formed in the top end of the filter body; the filtering part is positioned in the filter body and is used for filtering a water source entering from the filtering water inlet; the extruding part is positioned in the filter body and is arranged to extrude the filtering part so as to reduce a gap between the quartz sand in the filtering part; the power supply part is mounted at the top end of the filter body and is used for supplying energy to the extrusion part. By arranging the buffer piece, the speed of water flow impacting the filtering part is reduced, and the situation that gaps between quartz sand of the filtering part are increased, so that the filtering effect is reduced is prevented.

The invention discloses artificial fog making equipment with dedusting and humidifying effects for landscape architecture, which comprises a shell, a water outlet pipe, an atomizing nozzle, a water inlet pipe, a filter device and a water pump, and the filter device and the water pump are mounted in the shell; the inner end of the water inlet pipe is connected with the water containing tank, the filter cartridge is arranged in the water containing tank, a plurality of filter holes are formed in the side wall of the filter cartridge, the filter cartridge is connected with the water inlet end of the water pump through a connecting water pipe, and the water outlet end of the water pump is connected with the water outlet pipe. The atomizing nozzle is arranged on a pipeline, extending out of the shell, of the water outlet pipe, and the scraping mechanism is arranged in the water containing tank and can rub the outer side surface of the filter cartridge so as to scrape impurities attached to the outer side surface of the filter cartridge. According to the filtering device, impurities adhered to the outer side surface of the filtering cylinder can be automatically scraped, so that the filtering effect of the filtering device is recovered, manual disassembly for cleaning is not needed, the labor cost is saved, and the efficiency is higher.

The utility model relates to the technical field of ultrafiltration tanks, and discloses a reclaimed water immersion type ultrafiltration tank which comprises an ultrafiltration tank body, the top of one side of the ultrafiltration tank body is communicated with a water inlet pipe, the bottom of one side of the ultrafiltration tank body is communicated with a water outlet pipe, and the interior of the ultrafiltration tank body is fixedly connected with a mounting frame. An ultrafiltration membrane is fixedly connected to the inner side of the mounting frame, an opening and closing plate located at the bottom of the ultrafiltration membrane is fixedly connected to the inner side of the mounting frame, an aeration pipe is arranged between the ultrafiltration membrane and the opening and closing plate, and one end of the aeration pipe penetrates to the outer side of the ultrafiltration tank body and is communicated with an aeration assembly; the inner side of the opening and closing plate is rotationally connected with a closing mechanism, and the problems that when an existing ultrafiltration tank is used, due to the fact that an ultrafiltration membrane is used for filtering impurities in water for a long time, the ultrafiltration membrane is blocked, the filtering performance of the ultrafiltration membrane is affected after the ultrafiltration membrane is blocked, and then the treatment effect of the ultrafiltration membrane is reduced are solved.

The utility model provides a glycine drying tail gas treatment device belongs to glycine production technical field solves the problem that the prior art cannot recover small granular material and the poor absorption effect of methanol in the tail gas after the spray tower. The glycine drying tail gas treatment device includes pulse cloth bag dust collector, spray tower and granular carbon adsorption device, pulse cloth bag dust collector is used for separating gas and granular material, recycles granular material, the import of spray tower and the gas outlet of pulse cloth bag dust collector intercommunication, granular carbon adsorption device includes demister, drying heater and granular carbon adsorber, and the outlet of spray tower, demister, drying heater and granular carbon adsorber intercommunication in proper order, the outlet of granular carbon adsorber and total exhaust cylinder intercommunication, and granular carbon adsorber can adsorb the methanol in gas. The glycine drying tail gas treatment device can recover small granular material, can be accurate and efficient dust removal, can also adsorb the methanol remaining in tail gas.

The invention relates to the technical field of top-mounted ball valves, and discloses a top-mounted ball valve convenient for accessory replacement, which comprises a ball valve body, one end of the ball valve body is fixedly connected with a connecting pipe, the bottom of the connecting pipe is fixedly connected with a collecting box, the collecting box is internally provided with a collecting groove, and the inner wall of the connecting pipe is provided with a falling groove communicated with the collecting groove. The inner wall of the connecting pipe is fixedly connected with a fixed filter plate, and one side of the fixed filter plate is connected with a filter plate. According to the top-mounted ball valve with the accessories convenient to replace, the fixed filter plate and the filter plate are matched with each other, so that liquid entering the top-mounted ball valve is filtered, the cleanliness of the liquid is enhanced, and the abrasion risk caused by impurity erosion of a ball body and a cavity in the ball valve body is reduced; in addition, damage to the sealing face of the valve seat caused by impurity accumulation is effectively reduced, the service life of the top entry type ball valve is prolonged, and the problems of leakage, jamming or failure of the ball valve are avoided.

The utility model relates to the technical field of methanol energy recovery, in particular to a high-pressure methanol energy recovery device which comprises a methanol separation tank, a discharge end of the methanol separation tank is communicated with a methanol filter, and a discharge end of the methanol filter is respectively communicated with a hydraulic turbine power generation device and a pressure reducing valve. One end of the hydraulic turbine power generation device is communicated with a pre-rectification system, the hydraulic turbine power generation device converts recycled energy into electric energy and then conveys the electric energy to the electric power system, the output end of the pressure reducing valve is communicated with the pre-rectification system, a filter element is inserted into the top face of the methanol filter, and the lower end of the methanol filter is communicated with an air inlet pipe. Effective recycling of high-pressure methanol energy is achieved, production interruption caused by faults of a hydraulic turbine power generation device is avoided, the backwashing assembly removes impurities accumulated on the surface of the filter element from the filter element through high-pressure nitrogen, the filtering performance of the filter element is conveniently and rapidly recovered, and the running stability and reliability of the methanol filter are improved.

The utility model relates to the technical field of water treatment equipment, and discloses a waterway board and water purification equipment, which comprise a fixed plate and a waterway pipeline. A water inlet and a waste water port are formed in the fixed plate; the waterway pipeline is arranged on the fixing plate and comprises a pure water pipeline and a backflow pipeline, the pure water pipeline comprises a pure water inlet, the backflow pipeline comprises a backflow inlet and a backflow outlet, and the pure water pipeline is communicated with the backflow pipeline. And pure water can be guided into the backflow pipeline, so that the pure water enters the filter element through the backflow pipeline, and the filter element is washed and cleaned. The flowing of the pure water can take away dirt, sediments and impurities on the filter element, and the dirt and the impurities are discharged through the wastewater port, so that the filtering effect of the filter element is recovered.

The utility model relates to the technical field of hair driers, in particular to a hair drier which comprises a machine body and a replaceable filtering assembly, an air inlet part is arranged at one end of the machine body, an inner air inlet is formed in the air inlet part, the filtering assembly is detachably connected with the air inlet part, and air enters the machine body through the filtering assembly and the inner air inlet. The filter assembly can be replaced, and the filter assembly is detachably connected with the air inlet part, so that the filter assembly can be conveniently separated from the air inlet part during ash removal so as to directly replace a new filter assembly, and the filter assembly can be replaced and cleaned immediately after being disassembled. When an existing high-speed air blower brings high air speed, dust and impurities in the using environment are easily adsorbed on an air inlet mesh cover and enter the air blower in the using process, and the performance and safety problems that a motor is damaged, internal PCB devices are oxidized and the like are caused are solved. The detachable filter element is additionally arranged between the air inlet net cover and the external air inlet, so that the service life of the blower is greatly prolonged, and performance reduction and safety risks caused by dust accumulation are reduced.

The utility model relates to air filtering equipment technical field, and disclose a kind of self-cleaning air filter for liquid oxygen liquid nitrogen production, including box, filter core is movably connected in the box inner chamber, the filter core surface is provided with cleaning mechanism, the filter core top movably connected has engagement mechanism.The utility model drives main roller to drive synchronous belt circulation operation by motor, makes the shift pin push moving block reciprocating linear motion along the box side wall, drives cleaning brush to carry out comprehensive cleaning to filter core surface, and this design compared with traditional cleaning mode, it can cover larger cleaning area, effectively remove dust and impurities on filter core surface, restore the filtering performance of filter core, ensure that filter long-term stable operation, reduce the problem of the decline of filtering efficiency due to filter core blockage, and moving block and cleaning brush connection mode, so that cleaning brush appears abrasion after long-term use, operating personnel can quickly remove it from moving block, and install new cleaning brush.

This utility model relates to the field of dyeing and printing wastewater treatment technology, specifically a dyeing and printing wastewater pigment filtration device, including a filter box with external pipes on both sides. The filter box has a filter groove inside, a rinsing plate and a maintenance cover at the top, a splicing mechanism and a rinsing mechanism between the rinsing plate and the filter groove, a sealing box in the filter groove, a slot at the top of the sealing box connecting to the bottom, filter ports on both sides, a composite filter structure in the slot, and a threaded hole at one end of the sealing box penetrating the sealing box. This device achieves automatic cleaning of the composite filter structure through the cooperation of a movable sealing box and a rinsing structure, reducing maintenance difficulty and extending filter media life. The overall structure is reasonable and highly practical.

This utility model discloses a V-type sand filter air-water backwash distributor, belonging to the field of V-type sand filters. The side wall of the V-type sand filter body is equipped with multiple water and air pipes. Each water and air pipe forms a set of air-water backwash components and corresponds to a set of filter plates. Each water or air pipe has a flow monitoring pipe connected to its outer end, and a control valve is installed at the outer end of the flow monitoring pipe to control the opening and closing of the air and water supply. The equipment employs flange connections and sealing ring designs in multiple places to ensure reliable connections and good sealing. The inlet water pipe and liquid inlet valve allow for alternating use during equipment maintenance, improving flexibility. During maintenance, disassembling the inlet and outlet pipes, flow monitoring pipes, and control valves allows for inspection and cleaning of the water and air pipes, and facilitates easy cleaning or replacement of the filter plates, ensuring continuous and stable operation of the equipment. The equidistant distribution of the air-water backwash components and filter plates ensures a uniform and efficient filtration system.

The present invention provides an electroplating wastewater treatment station, which comprises: a precipitation assembly, which comprises a precipitation box, a main precipitation cavity and a liquid outlet cavity are arranged in the precipitation box, and an inclined filtration module is mounted in the liquid outlet cavity; the neutralizing assembly comprises a neutralizing box, a stirring part is mounted in the neutralizing box, and an opening and closing part is mounted at the bottom of one side of the neutralizing box; the filtering mechanism comprises a filtering box, a filtering cloth shaping assembly and a defoaming assembly; an extrusion plate is horizontally and slidably mounted in the filter box, a filter cavity is formed in the inner side of the extrusion plate, a driving part is connected to the outer side of the extrusion plate, and filter cloth arranged in a V shape is mounted in the filter cavity. Through partition design, integration of filtration, clarification and impurity sedimentation is achieved, the filter cloth is arranged in a V shape, an operation area for rapidly replacing the filter cloth is adopted, meanwhile, the filter cloth is backwashed through the filter cloth shaping assembly, fine impurities in filter cloth holes are removed, online maintenance of the filter cloth is achieved, and the filter cloth does not need to be dismounted after shutdown.

The utility model relates to the field of graphite recovery, and particularly discloses a graphite dust recovery device which comprises a dust collection box body, a filter screen, a motor, a rotating shaft, a transmission belt and a transverse plate, smoke generated by processing is introduced into the dust collection box body, the filter screen is used for intercepting graphite dust in the smoke, and the motor drives the rotating shaft, the transmission belt and the transverse plate to move. And the brush on the transverse plate is used for cleaning the filter screen. The filter screen can intercept most graphite powder, reduce air pollution and recover part of raw materials. After the device is used for a long time, the transverse plate drives the brush to move on the surface of the filter screen, the graphite powder embedded into the meshes is swept off, and the filtering effect of the filter screen is restored. When the self-cleaning device is used for self-cleaning, due to the fact that the rotating shaft only rotates automatically, the small-size transverse plate only moves up and down, the movement amplitude of the corresponding movable part is small, generated noise and equipment vibration are small, and the self-cleaning process is stable; in actual use, the motor only needs to be started at intervals, and the transverse plate does not need to work continuously.

The invention relates to the technical field of sewage treatment, in particular to a preparation method and application of a fly ash-based ceramsite filter material for a biological aerated filter, fly ash, red mud, coal gangue and a pore-forming agent are added, mixed, granulated, sintered for about 20 minutes at 1050-1120 DEG C and cooled to prepare ceramsite. The filter material is high in void ratio, large in specific surface area, resistant to acid and alkali, suitable for a biological aerated filter, beneficial to rapid biofilm formation and improvement of wastewater purification efficiency, especially capable of effectively removing chloride ions in desulfurization wastewater, capable of being recycled and capable of promoting solid waste recycling. Compared with a traditional clay filter material, the filter material has the advantages that the operation cost is reduced, the environmental protection benefit is improved, and the filter material is widely applicable to biochemical treatment and advanced treatment of domestic sewage and industrial wastewater.