31results about How to "Achieve backwash" patented technology

The utility model discloses a waste liquid treatment device, which relates to the technical field of metal smelting waste liquid treatment and comprises a mixing box and a filter box, the mixing box is fixedly mounted on the outer upper wall surface of the filter box, a guide pipe is connected between the mixing box and the filter box, and a first electromagnetic valve is fixedly mounted on the guide pipe. Waste liquid and liquid medicine are mixed through the stirring assembly in a stirring mode of a plurality of stirring plates which rotate and revolve, the mixing uniformity of the waste liquid and the liquid medicine is improved, the waste liquid is filtered through the liquid inlet pipe and the liquid outlet pipe, and the waste liquid and the liquid medicine are mixed through the liquid inlet pipe and the liquid outlet pipe. By closing the second valves on the liquid inlet pipe and the liquid outlet pipe, a water source enters through the second pipeline and is discharged from the first pipeline, backwashing of the filter screen plate is achieved, the stirring box and the filter box can be cleaned, the cleaning work efficiency of the filter screen plate is improved, and the cleanliness of the waste liquid treatment device is improved.

The invention relates to an integrated gravel filtering device for an agricultural irrigation system, and relates to the technical field of gravel filters, the integrated gravel filtering device comprises a filtering tank body, a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are communicated with the filtering tank body, a filtering plate is arranged in the filtering tank body in the height direction of the filtering tank, and filtering holes are densely formed in the filtering plate; a sealing plate is arranged in the filtering tank body, filtering sand is filled between the filtering plate and the sealing plate, a plurality of groups of filtering caps are arranged on the sealing plate, a partition plate is arranged in the filtering tank body, the partition plate is arranged in the height direction of the filtering tank body, and the filtering tank body is divided into a first filtering cavity and a second filtering cavity by the partition plate; the first filtering cavity and the second filtering cavity are both communicated with the water outlet pipe, and a switching assembly used for enabling one of the first filtering cavity and the second filtering cavity to filter a water source is further arranged in the filtering tank body. The irrigation device has the effects that the irrigation efficiency is improved while the filter screen is washed, and the irrigation period is shortened.

The utility model relates to the technical field of ferrous metallurgy, in particular to a continuous casting machine crystallizer inlet water filtering device which comprises a filter chamber, a filtering assembly, a reversing assembly, a water inlet pipe and a water outlet pipe. The water inlet pipe and the water outlet pipe are respectively connected with the filter chamber; the filter assembly comprises a filter screen supporting piece and at least two filter screens, the filter screens are connected with the filter screen supporting piece, and the filter screen supporting piece is connected with the inner side wall of the filter chamber; the reversing assembly comprises an upper partition plate, a lower partition plate and a reversing rod, the reversing rod penetrates through the filter screen supporting piece, namely, the filter assembly is located between the upper partition plate and the lower partition plate, and the water filtering channel is replaced under the condition that water supply is not interrupted through the separation and reversing effects of the reversing assembly. The water filtering device is simple in structure, water entering the crystallizer is filtered, the casting blank quality problem caused by blockage of a water seam and a nozzle of the crystallizer is avoided, water supply of the crystallizer does not need to be interrupted when the water filtering channel is replaced, and therefore production efficiency is improved.

The invention belongs to the technical field of sewage treatment, and provides a sewage treatment system and a sewage treatment method.The sewage treatment system comprises a shell and a cover plate, the shell is detachably connected with the cover plate, the shell is communicated with a drainage pipe, the cover plate is communicated with a water inlet pipe, a filter cartridge is fixedly installed in the shell, the filter cartridge and the shell are coaxially arranged, and the filter cartridge and the cover plate are detachably connected. And a stirring shaft is rotationally mounted on the cover plate. Compared with the prior art, the dust removal device has the beneficial effects that when the dust removal cylinder revolves, one side edge of the collecting groove scrapes impurities on the inner wall of the filter cylinder, meanwhile, due to rotation of the dust removal cylinder, liquid can flow into the dust removal cylinder and flow out of the filter holes, and therefore the scraped impurities can enter the dust removal cylinder along with sewage and are stored in the dust removal cylinder; therefore, the impurities scraped from the side wall of the filter cartridge can be collected and stored, and the impurities cleaned from the filter cartridge are prevented from being adhered to the filter cartridge again.

The present invention proposes a combined filtering device for a gas purification system, including a directional valve, a gas transmission channel is arranged in the lower shell of the directional valve, and an air inlet I, an air outlet I and a return port are arranged on the gas transmission channel, the air outlet I is connected to the main filter, and a push assembly is arranged in the return port. The upper end of the lower shell is screwed with the upper shell, and a sliding valve stem and an air outlet II are arranged in the upper shell. A bypass valve is also arranged in the upper shell, and the air outlet II and the air inlet I are connected through the bypass valve, and the air outlet II is connected to the main filter through the first filter. The air outlet end of the main filter is provided with a blocking assembly, and the left side of the upper shell is provided with an air outlet III. A blocking block is fixed to the lower part of the valve stem. When the valve stem drives the blocking block to move downward, the air outlet III is communicated with the air outlet I, and the air outlet III is connected to the return port through the second filter. The present invention realizes the backwashing of the main filter without suspending the gas transmission and adopting a solenoid valve, etc., which is safer.

The utility model relates to the technical field of stevioside production, in particular to a filtering device for stevioside production, which comprises a body, a feeding pipe arranged on one side of the lower portion of the body, a discharging pipe arranged on one side of the upper portion of the body, a sediment discharging pipe arranged on the lower portion of the body and a filtering component arranged on the upper portion inside the body. A rotary flow guide part is arranged below the filtering part, and two ends of the rotary flow guide part are respectively communicated with the filtering part and the sediment discharge pipe; and the pressure sensor on the feeding pipe and the discharge valve on the sediment discharge pipe are electrically connected with the controller respectively. The filtering device with the structure can be used for effectively filtering insoluble substances in stevioside feed liquid, can also be automatically cleaned, is simple and convenient to operate, and greatly improves the working efficiency.

The utility model relates to a kind of double-drum solid-liquid separation equipment of wastewater treatment, including upper collecting cylinder and lower collecting cylinder, lower collecting cylinder is located below upper collecting cylinder, power motor is installed in the outside of upper collecting cylinder and lower collecting cylinder, the output end of two power motors is connected with screen drum, screen drum is respectively arranged in upper collecting cylinder and lower collecting cylinder inside, screen drum in upper collecting cylinder is communicated with inlet pipe, the bottom of upper collecting cylinder is communicated with the input end of connecting pipe, the output end of connecting pipe is communicated with the inside of screen drum in lower collecting cylinder, solid collecting bin is installed in the other side of power motor relative to upper collecting cylinder and lower collecting cylinder, solid collecting bin is communicated with the screen drum inside in upper collecting cylinder and lower collecting cylinder, and two cleaning brush rollers are further provided in the inside. In the utility model, by twice solid-liquid separation treatment to wastewater, the solid-liquid separation effect can be greatly improved.

The utility model discloses a kind of secondary filtration components of breeding high concentration wastewater backwashing, it is related to the field of breeding high concentration wastewater treatment, including machine body, sewage pipe and sealing cover, the inside of machine body is provided with filter cartridge, and the bottom of filter cartridge is provided with support disc, and support disc is fixedly connected in the inside wall of machine body.This kind of secondary filtration components of breeding high concentration wastewater backwashing is provided with filter cartridge, PLC controller and cleaning assembly, in the use process of using secondary filtration component to treat breeding high concentration wastewater, it is convenient for subsequent staff to disassemble and maintain filtration component, so that the work of staff is more efficient, it is convenient for subsequent staff to clean and maintain inside device, avoid the situation that filtration component occurs in device inside, avoid the microbial spoilage problem caused by long-term retention of impurities, extend filter core or filter material replacement cycle, it is convenient for staff to use wastewater secondary filtration component.

The utility model relates to the technical field of building drainage, and discloses a drainage pipe network anti-blocking device which comprises a drainage pipeline used for forming a drainage pipe network, the drainage pipeline is sequentially provided with a detection assembly, a garbage collection assembly and an anti-blocking assembly from top to bottom, the garbage collection assembly comprises a branch pipe, a collection barrel and a filter screen, the branch pipe is connected to the drainage pipeline, and the collection barrel is connected to the filter screen. The collecting cylinder is installed on the branch pipe in a threaded mode, the filter screen is obliquely installed in the drainage pipeline and the branch pipe, and the anti-blocking assembly comprises a pressurizing cylinder, a pressurizing unit and a flushing unit; through cooperation of the garbage collection assembly, the anti-blocking assembly and the detection assembly, foreign matter in the drainage pipeline is intercepted through the filter screen, and when the pipeline is blocked, a conductive probe triggers an access due to the liquid level, a high-pressure nozzle of the inflation pump is started to backwash the filter screen, the water level drops after dredging, the conductive probe is disconnected, and the inflation pump stops working; the anti-blocking device has the advantages of automatic cleaning, good anti-blocking effect and high practicability.

The utility model discloses a beer processing wastewater treatment device which comprises a base and a centrifugal pump installed on the base, the input end of the centrifugal pump is connected with a pipe body a, the pipe body a is provided with a first-stage filtering mechanism, the output end of the centrifugal pump is connected with a pipe body b, the pipe body b is provided with a valve body, and the valve body is provided with a second-stage filtering mechanism. The side wall of the pipe body b is connected with a pipe body c and a pipe body d through a plurality of three-way electric control valves. Wastewater enters from the pipe body a and passes through the filter plate to be filtered for the first time, the filter plate is obliquely arranged, it is guaranteed that water flow washes filter residues upwards along the filter plate in an inclined mode, the filter residues are prevented from being gathered on the surface of the filter plate, the filter holes are gradually reduced, graded filtering is achieved, the filtering efficiency is improved, and then the wastewater enters the pipe body e through the pipe body b and the pipe body d. Meanwhile, by closing the valve body a, introducing clear water from the pipe body e and discharging the clear water from the pipe body c, the backwashing of the filter can be realized, and the maintenance is simple and convenient.

The invention relates to the technical field of sewage purification, in particular to sewage purification equipment based on a permeable membrane, which comprises a cylinder body, a filter element and the like, two filter elements which are distributed up and down are arranged in the cylinder body; two water storage spaces which are symmetrical up and down are arranged in the cylinder body, and the two filter elements are respectively positioned in the corresponding water storage spaces. Filtered stream is located in the filter element on the front side and then flows out from the filter element side to the outer side of the filter element under the action of pressure, back washing of the filter element on the front side is achieved, silt on the outer side of the filter element is washed down, and the situation that a large amount of silt adheres to the outer side of the filter element, and consequently filter holes in the filter element are blocked by the silt is avoided; the filtering effect of the filter element is influenced; air in the air bag enters the connecting groove along the air inlet pipe and then enters the inner side of the filter element along the second water outlet pipe, so that the inner side of the filter element is pressurized through airflow, filtered stream flowing into the filter element flows out of the filter element more easily, and the backwashing effect of the filtered stream on the filter element is improved.

The present invention relates to an anti-fouling and anti-corrosion device and method for ship and marine engineering cooling pipelines, including a fresh water supply pipe, a sea water supply pipe, a heat exchanger, a forward water inlet pipe, a forward water outlet pipe, a reverse water inlet pipe and a reverse water outlet pipe. When the ship and the marine engineering are working, conventional forward delivery of sea water can be adopted to realize cooling and cooling of electromechanical equipment. By innovatively delivering sea water in the forward and reverse directions alternately, forward flushing and reverse flushing of silt and sediment in the pipeline can be realized. When the ship and the marine engineering are not working, compressed air is used for forward and reverse blowing and fresh water is used to discharge the sea water and debris retained in the heat exchanger and the cooling pipeline, which greatly reduces the concentration of residual sea water in the fresh water after replenishing fresh water, blows out fine debris in the pipeline, greatly reduces the amount of fresh water used, and retains fresh water to soak the cooling pipeline, so that marine organisms lose their growth environment, reduce the accumulation and attachment of marine organisms in the pipeline, and prolong the service life of the cooling system.

The utility model relates to melt -blown cloth water pole -electrode device technical field, the utility model provides a kind of low resistance high -efficient melt -blown water pole -electrode device, including fixed frame, further include support stick, second support plate, winding frame, pole -electrode mechanism and collection mechanism, the top side of fixed frame is provided with two support sticks, both ends of support stick are rotatably provided with first support plate, first support plate is fixedly connected with fixed frame, the side wall of fixed frame is fixedly provided with two second support plates, and guiding roller is rotatably arranged between second support plate, both sides of fixed frame are provided with winding frame, winding roller is rotatably arranged in winding frame, one winding frame is installed with first motor, and the output end of first motor is fixedly connected with similar winding roller, by the above technical scheme, for solving the technical problem of greater resistance in the process that water flow passes through melt -blown cloth in prior art.

The application discloses a variable-flow type purification device of a hydrogen purification adsorption tower and belongs to the technical field of hydrogen purification. The variable-flow type purification device of the hydrogen purification adsorption tower comprises a tower body, vacuum extraction pipes and gas inlet pipes are connected to the lower outer side of the tower body, an exhaust pipe is connected to the top of the tower body, first and second positioning screens are fixedly arranged on the inner side of the tower body, a fixing seat is fixedly installed on the upper inner side of the tower body, an elastic lifting connection is formed between the upper part of the fixing seat and a movable seat, a sealing plate is also fixedly installed on the upper inner side of the tower body, a rubber cylinder body for adjusting air pressure is fixedly connected between the movable seat and the sealing plate, and a flushing pipe is connected to the outer side of the upper part of the tower body. The variable-flow type purification device of the hydrogen purification adsorption tower can realize real-time regulation and control of the gas flow rate according to the purity of hydrogen purification, ensures the purification efficiency and the purity, and can realize efficient desorption in a combined manner, so that effective adsorption and purification of the adsorption tower are ensured.

This utility model relates to a fish tank water filtration system, belonging to the category of ornamental fish breeding filtration facilities. The fish tank water filtration system includes a fish tank, a water pump, pipes, and a filter cartridge. A main water intake pipe connects to the inside of the fish tank and is divided into a main filtration pipe and a main flushing pipe via a T-junction. The main filtration pipe and the main flushing pipe are each connected to a T-junction, and the second ports of the two T-junctions are connected via a power pipe, which houses a bidirectional water pump. The third port of the T-junction connected to the main filtration pipe connects to a branch filtration pipe, which has multiple branch tees connected in series. The third port of the T-junction connected to the main flushing pipe connects to a branch flushing pipe, which has multiple branch flushing tees connected in series. A filter cartridge is connected between the branch tees and the branch flushing tees, and filter media is placed inside the filter cartridge. A drain valve is installed at the end of the branch filtration pipe, connecting to external drainage. The end of the branch flushing pipe connects to the inside of the fish tank. This filtration system is placed outside the fish tank and can filter the water inside, maintaining water cleanliness. This device uses a bidirectional motor to achieve both filtration and backwashing, increasing the lifespan of the filter media and avoiding frequent replacements.

The invention discloses an indoor air purifier based on formaldehyde removal gel, and relates to the technical field of indoor air purifiers. A plurality of vertical mounting cylinders are arranged on the outer side of an annular partition plate, the vertical mounting cylinders are connected with the annular partition plate through flow guide channels, the vertical mounting cylinders communicate with the corresponding flow guide channels through first communicating openings, and second communicating openings communicating with the flow guide channels are formed in the inner wall of the annular partition plate; first through dissipation holes are formed in the circumferential side face of the gel dissipation barrel, the gel dissipation barrel is rotationally matched with the inner wall of the arc-shaped blocking ring, and second through dissipation holes matched with the first through dissipation holes are formed in the circumferential side face of the gel filling barrel. Indoor air and chlorine dioxide gas make full contact in the inner cavity of the annular partition plate, the purification effect on formaldehyde in the indoor air can be greatly improved, gel volatilization can be accelerated through air flow of the gel filling cylinder, and then the purification efficiency of formaldehyde in the indoor air in the inner cavity of the annular partition plate is improved.

A purified water preparation system comprises a raw water tank, the raw water tank is connected with a multi-medium filter through a first water pipe, the multi-medium filter is connected with a first softening filter through a second water pipe, and the first softening filter is connected with a second softening filter through a third water pipe. The second softening filter is connected with an activated carbon filter through a fourth water pipe, and the output end of the activated carbon filter is sequentially connected with a security filter, a reverse osmosis membrane filter, an EDI (electrodeionization) device and a pure water tank through water pipes; the second water pipe is connected with the third water pipe through a fourth water pipe, the third water pipe is connected with the fourth water pipe through a fifth water pipe, the fourth water pipe is connected with one end of a sixth water pipe, and the other end of the sixth water pipe is connected with the input end of the first softening filter. According to the utility model, the defects in the prior art are overcome, the softening treatment effects of the first softening filter and the second softening filter can be effectively ensured, and the service lives of the first softening filter and the second softening filter are also effectively ensured.

The utility model discloses a filter device for wastewater treatment belongs to wastewater treatment technical field, this device includes processing jar, top cap and filter mechanism, the upside opening of processing jar, bottom is equipped with blowdown pipe, and is equipped with blowdown valve on blowdown pipe, is equipped with the water inlet pipe between the supporting ring and blowdown pipe in processing jar, filter mechanism is located in processing jar, and is placed on supporting ring, top cap is detachably connected with processing jar, is equipped with the water outlet pipe on top cap, is equipped with the compression ring in top cap, and compression ring is pressed on the upper end surface of filter mechanism. The filter mode of lower water inlet upper drainage greatly reduces the impurity adhesion amount of filter mechanism bottom, can carry out backflushing to filter mechanism, and backflushing effect is good, guarantees the filtration efficiency of filter device to wastewater.

The utility model discloses an intelligent fertilizing device for a bio-organic fertilizer, and belongs to the technical field of agricultural fertilizing equipment. The device comprises a rack, wherein a fertilizer box, a power supply control box, a gas booster pump, a bidirectional liquid supply pipeline, a spray head and two self-cleaning filtering mechanisms are arranged on the rack. The fertilizer box is used for storing liquid biological organic fertilizer; the output end of the gas booster pump is connected to the inner cavity of the fertilizer box through a box body gas supply pipe; the two ends of the two-way liquid supply pipeline are fixedly connected to the bottoms of the two ends of the fertilizer box; the spray head is fixed at the output end of the bidirectional liquid supply pipeline; the two self-cleaning filtering mechanisms are fixed to the outer wall of the two-way liquid supply pipeline and located at the front ends of the nozzle in the two liquid supply directions respectively. The self-cleaning filtering mechanism comprises a gas distribution pipe, a filter cartridge, a first control valve and a second control valve and is used for realizing gas flow backwashing of the filter cartridge. The device is reasonable in structure, can effectively prevent the spray head from being blocked, and improves the fertilization efficiency and uniformity.

The utility model discloses a pretreatment device of a benzene series analyzer, which relates to the technical field of benzene series analysis and comprises a detection sensor and an integrated back plate, an upper inlet and a lower outlet of the detection sensor are respectively connected with a three-way valve, and the three-way valve at the outlet of the detection sensor is connected with a backwashing interface. The inlet of the three-way valve at the inlet of the detection sensor is connected with a secondary filter, the inlet of the secondary filter is connected with a primary filter, and the inlet of the primary filter is connected with a circulating pump. A sample detection pipeline and a backwashing pipeline of a detected sample are switched through a three-way valve, so that backwashing of the whole sample pipeline is realized, washing water is discharged to a wastewater pool, a pretreatment system adopts a multi-stage filtering device, the filtering precision is relatively stable, a target liquid is a clean liquid meeting the requirement of an analyzer after being pretreated, and the quality of the target liquid is improved. And the analysis accuracy and the detection reliability and stability of the detection medium can be ensured to the greatest extent.

The utility model belongs to plate heat exchanger technical field, concretely is a kind of plate heat exchanger of easy cleaning, including support, the outer wall bearing of support is connected with screw rod, and the one end fixedly connected with hand wheel of screw rod, and the outer wall screw thread connection of screw rod has threaded slide block, and the outer wall fixedly connected with presser frame of threaded slide block, and the outer wall fixedly connected with mounting plate of presser frame, and the inner wall of mounting plate is penetrated with the fixed connection of the limit rod of support inner wall, and the outer wall of mounting plate is closely attached with the heat exchange plate of the embedding of limit rod outer wall. The utility model is through being provided with limit rod, hand wheel rotates, threaded slide block is moved by screw rod, to drive the mounting plate of the outer wall of presser frame along the outer wall of limit rod sliding, to drive heat exchange plate closely attached further, realize the quick installation of heat exchange plate, it is convenient to clean heat exchange plate;By setting limit rod, avoid the misplacement of heat exchange plate when installing.

The utility model discloses a dual backwashing filter valve, which relates to the technical field of filter valves and comprises a valve body, a water inlet pipe, a water outlet pipe, a first connecting pipe and a second connecting pipe. The water inlet pipe and the water outlet pipe are connected through a first connecting pipe and a second connecting pipe, and the two ends of the first connecting pipe and the two ends of the second connecting pipe communicate with the water inlet pipe and the water outlet pipe correspondingly. In the using process, the working mode of the first filter plate and the working mode of the second filter plate can be switched, it is guaranteed that any one filter plate can conduct back washing on the other filter plate which does not work when in the working mode, and therefore it can be guaranteed that the filter valve can always play a filtering role, normal operation of a water conveying or infusion device is guaranteed, and the service life of the filter valve is prolonged. Meanwhile, the other filter plate can be backwashed, and the practicability is high.

The utility model provides a laminated backwashing automatic filter which comprises a support, and a centrifugal filter unit, a laminated filter unit and an electric control cabinet are mounted on the support. The centrifugal filtering unit comprises a centrifugal filtering body and a desilting tank; the laminated filter unit comprises a water inlet pipe, a water outlet pipe, a blow-off pipe, a laminated filter body, a first electric butterfly valve, a second electric butterfly valve, a first pressure gauge and a second pressure gauge, and the electric control cabinet is electrically connected with the first electric butterfly valve, the second electric butterfly valve, the first pressure gauge and the second pressure gauge respectively. According to the utility model, the centrifugal filter unit is arranged in front of the laminated filter unit, so that the laminated backwashing automatic filter is particularly suitable for a flat sand or multi-sand environment, a net core does not need to be manually and frequently disassembled and manually cleaned and then assembled, the labor intensity of an operator is greatly reduced, and meanwhile, the continuous irrigation is ensured without shutdown during irrigation; the service life of the laminated filter unit is prolonged, and the backwashing frequency of the laminated filter unit is reduced.

The combined filtering device comprises a direction adjusting valve, a gas conveying channel is arranged in a lower shell of the direction adjusting valve, a gas inlet I, a gas outlet I and a return opening are formed in the gas conveying channel, the gas outlet I is connected with a main filter, a jacking assembly is arranged in the return opening, the upper end of the lower shell is in threaded connection with an upper shell, and the lower end of the upper shell is in threaded connection with a main filter. A sliding valve rod and an air outlet II are arranged in the upper shell, a bypass valve is further arranged in the upper shell, the air outlet II is connected with the air inlet I through the bypass valve, the air outlet II is connected with the main filter through the first branch filter, a blocking assembly is arranged at the air outlet end of the main filter, an air outlet III is formed in the left side of the upper shell, and a blocking block is fixed to the lower portion of the valve rod. And when the valve rod drives the plugging block to move downwards, the air outlet III is communicated with the air outlet I, and the air outlet III is connected with the return port through the second branch filter. Backwashing of the main filter is achieved, fuel gas conveying does not need to be paused, an electromagnetic valve does not need to be adopted, and higher safety is achieved.

The utility model relates to the technical field of water treatment equipment, in particular to an ACIFLO water treatment process micro-sand cyclone anti-blocking device which comprises a shell, an isolation part and a filter screen. A containing cavity with a medium inlet and a medium outlet is formed in the shell, the medium outlet is communicated with the micro sand cyclone, and a sewage draining exit is formed in the shell; the isolation part is arranged in the containing cavity and close to the medium inlet. The isolation body and the sealing piece are matched to form the isolation part. The isolation body is provided with a through hole communicating the medium inlet and the containing cavity, and the sealing piece is exactly matched with the through hole when closed. The filter screen extends to the drain outlet along the through hole to form a filter cavity, one port of the filter cavity is communicated with the through hole, and the other port is communicated with the drain outlet. Through the arrangement, a medium enters the filtering cavity through the medium inlet and the isolation body to be filtered, the filtered medium is discharged to the micro-sand cyclone from the medium outlet, and filtered residues are discharged from the sewage draining exit, so that large-size impurities are filtered, and the problem that a pipeline of the micro-sand cyclone is blocked is solved.

The invention relates to the technical field of Chinese patent medicine production, in particular to Chinese patent medicine filtering equipment and a production method thereof.The Chinese patent medicine filtering equipment comprises a feeding pipe, a filtering device used for filtering Chinese patent medicine liquid and a backwashing device used for washing the filtering device; the top of the feeding pipe is fixedly connected with a feeding valve, the front of the discharging pipe is fixedly connected with a discharging valve, and the two ends of the feeding pipe and the two ends of the discharging pipe are fixedly connected with filtering devices. After filtering, impurities in the filtering device can be backwashed under the action of the backwash device, the service time of the filtering device is prolonged, meanwhile, when the filtering device is backwashed, Chinese patent medicine liquid can be filtered through the other filtering device, and uninterrupted filtering is achieved.

The invention relates to the technical field of precipitation wells, and discloses an energy-saving type precipitation inclined shaft and a construction method thereof.The energy-saving type precipitation inclined shaft comprises a mounting hole, an inner shaft body, a water filter screen cylinder, an outer shaft body and a filter material, and the inner shaft body, the water filter screen cylinder and the outer shaft body are sequentially arranged in a sleeving mode from inside to outside; the outer well body is alternately provided with attaching parts and protruding parts in the circumferential direction of the outer well body, the attaching parts and the inner well body jointly clamp the water filter screen cylinder, the protruding parts protrude outwards relative to the water filter screen cylinder, the outer diameter of the protruding parts is consistent with the inner diameter of the installation hole, and the outer diameter of the protruding parts is consistent with the inner diameter of the installation hole. Water through holes are formed in the fitting part and the outer well body; and the filter material is filled between the outer wall of the fitting part and the inner wall of the mounting hole. The thickness uniformity of the filter material layer between the inclined shaft and the hole can be improved.

This utility model relates to the field of water tank cleaning. Its purpose is to provide a backwashing device for a water intake pump room, comprising several inlet tanks, several suction tanks, and a backwashing mechanism. The suction tanks are connected to their corresponding inlet tanks. A water inlet pipe is installed at the front of each inlet tank, and a quick-opening valve is installed at the rear end of the water inlet pipe. A water pump is installed at the rear of each suction tank, and a water supply network connects the pumps. The backwashing mechanism includes an electric branch valve, an electric main valve, and a main flushing pipe. Several flushing branch pipes extend from the main flushing pipe. A connecting pipe connects to each flushing branch pipe. The electric branch valve is installed between the connecting pipe and the flushing branch pipe. Water flows through the connecting pipe to flush the bottom of the inlet or suction tank, thereby agitating the sediment at the bottom of the inlet or suction tank. This utility model agitates the mud and sand at the bottom of the inlet and suction tanks, discharges the mixed muddy water, and simultaneously backwashes the water inlet pipe.

The application belongs to the technical field of water gate garbage interception and discloses a water gate garbage interception device for water conservancy projects, which comprises a riverway mounting frame mounted in a riverway, and a water gate main body for riverway cutoff is arranged on the riverway mounting frame. The threaded rod is driven to rotate by the driving motor. Since the threaded directions of the two ends of the threaded rod are opposite, the support frame and the cleaning plate are driven by the abutting sliding member to move to the two ends along the sliding groove, the garbage gathered in the upstream area of the interception net plate is pushed to the two ends, and is collected in the collecting assembly. In this way, the garbage intercepted by the interception net plate can be cleaned by the cleaning plate through the repeated forward and reverse rotation of the threaded rod driven by the driving motor. The device can adapt to riverways of different widths, so that the garbage intercepted by the interception net plate is not too much, the load bearing of the interception net is not increased, the garbage collected in the collecting assembly is cleaned regularly, the efficiency of riverway garbage fishing is improved, the operation distance is reduced, and the safety of the workers is ensured.

The utility model provides a kind of for cleaning papermaking multistage filtering water circulating device, belong to clean papermaking technical field, including water circulating mechanism, including water storage bucket, first communicating pipe connected in water storage bucket inside, multistage filtering cylinder for carrying out multistage filtration to water, second connecting pipe connected in multistage filtering cylinder water outlet, for circulating use to water circulation pump;Cleaning mechanism, including for backwashing component for backwashing multistage filtering cylinder, and for the energy recovery component of the flow of backwashing water can be collected.The utility model is matched between backwashing component and energy recovery component, realizes the backwashing and kinetic energy recovery of multistage filtering cylinder, solves the problem that traditional water circulating device lacks backwashing function and needs to frequently dismount cleaning multistage filtering cylinder, to improve cleaning efficiency further, and recycling kinetic energy in backwashing process, to enhance overall energy utilization.