1116 results about "Membrane filter" patented technology

Porous membranes, and methods of making such porous membranes, that comprise staple or discrete fibers and nanoparticles dispersed throughout at least a portion of the membrane are provided. A filter media comprises a porous membrane comprising staple fibers and having a mean pore size of less than about 10 microns. The media further includes nanoparticles disposed within the porous membrane. The nanoparticles reduce the mean pore size of the membrane, while substantially maintaining the pressure drop (e.g., bubble point) across the membrane. The porous membranes may be configured for use as filter media and are particularly useful for gas or liquid filters, including, but not limited to, membrane filters, diesel filters, air filters, face masks, gas turbine and compressor air intake filters, panel filters, cartridge filters, bag filters, clean-in-place (CIP) filters and the like.

The invention discloses an urban sewage treatment device with an in-situ cleaning ultrafiltration membrane assembly, and relates to the field of sewage treatment devices. A municipal sewage treatment device with an in-situ cleaning ultrafiltration membrane assembly comprises a shell provided with a liquid inlet and a liquid outlet, and further comprises a paddle rotationally connected to the liquid inlet, a water inlet, a water outlet, a water inlet, a water outlet, a water inlet and a water outlet, the sliding groove is formed in the shell; the sliding plate is connected into the shell in a sliding mode, and the sliding plate can slide up and down in the shell through impact of the sliding groove and water flow at the liquid inlet; the filter membrane barrel is fixedly connected to the sliding plate, the filter membrane barrel is used for filtering external sewage, and the liquid outlet end of the filter membrane barrel is connected with the liquid outlet; through impact of sewage, the filter membrane barrel continuously moves up and down, impurities left on the surface are cleaned through vibration generated by movement, meanwhile, water flow generated by the first nozzle can conduct secondary cleaning on the impurities on the filter membrane barrel, the filter membrane barrel can effectively clean the sewage, and long-term use is facilitated.

Method and apparatus for treating greywater to produce process water, comprising a cleaning process including coarse filtration of the greywater, preferably aerobic biological cleaning with sedimentation of particles and suspended solids, and subsequent ultrafiltration, preferably by means of a membrane filter, wherein the cleaning process is controlled at least with regard to the biological cleaning and the ultrafiltration depending on the greywater pollution.

The invention discloses a novel electrolytic tank pipeline filter and a self-cleaning system. The novel electrolytic tank pipeline filter comprises a multi-stage filtering part, the self-cleaning system and an intelligent control system, the multi-stage filtering part comprises multi-stage filter elements arranged in the material pipeline, and the multi-stage filter elements are arranged from large to small according to the filtering particle size to form a filtering gradient; the self-cleaning system acts on the multi-stage filter element part at the same time or in a time-sharing manner on the basis of a fluid reverse recoil principle; the self-cleaning system is combined with pulsating flushing control, so that the filter element is separated from a filter cake at low loss; the multi-stage gradient filtration is adopted, impurities are efficiently and accurately intercepted, the filter elements with the particle sizes from large to small are arranged in a gradient mode, the first-stage titanium alloy filter element intercepts large particles, the second-stage polytetrafluoroethylene membrane filters tiny impurities, the efficiency is improved through graded interception, the loss of the filter elements is reduced, and the material purity and the hydrogen production quality are guaranteed. The multi-element self-cleaning technology is adopted, low-loss deep cleaning is achieved, and the self-cleaning system integrates multiple technologies such as fluid reverse backflushing, pulsating flushing, ultrasonic vibration and a pulsed electric field.

The invention relates to the technical field of reverse osmosis (RO) membranes, in particular to a ro membrane filter element for a water purifier. A ro membrane filter element for a water purifier is a polyethersulfone membrane with a hydrophilic modifier-polydopamine coating deposited on the surface, and the hydrophilic modifier is one or more of polyethylene glycol, hexanehexol and 3-sulfopropyl tetradecyl dimethyl betaine. The ro membrane filter element for the water purifier disclosed by the invention has extremely high anti-pollution performance.

The invention belongs to the technical field of 4-BMA mother liquor recycling, and relates to a method for recycling 4-BMA in mother liquor by adopting a membrane treatment technology, which comprises the following steps: dropwise adding isopropylamine into 4-BMA refining wastewater, adjusting the pH value to 8-9, selecting a proper filter membrane, and filtering by using membrane filtering equipment at a certain temperature to obtain concentrated liquor and permeate liquid; the maximum separation effect is achieved by controlling the volume ratio of the permeate to the concentrated solution, and the 4-BMA isopropylamine salt concentrated solution is obtained; ethyl acetate is added into the 4-BMA isopropylamine salt concentrated solution for extraction, then 13.5 wt% hydrochloric acid is dropwise added for crystallization, and a 4-BMA product is obtained. According to different solubility of 4-BMA, isomer and isopropylamine after salification in water, the isomer salt is dissolved in water to be removed, 4-BMA salt with high purity is obtained, qualified 4-BMA with the purity larger than or equal to 98.00% is obtained through acid adjustment, and the purity of 4-BMA is larger than or equal to 98.00%. The method is low in energy consumption, simple in process, simpler to operate and easier to convert.

The utility model discloses a multistage denitrification deep bed filter which comprises a filter body, a middle-section filter box is fixedly mounted at the top of the filter body, a top-end filter box is fixedly mounted at the top of the middle-section filter box, and a coarse sand layer is fixedly connected to the position, close to the bottom, in the top-end filter box. A fine sand layer, an activated carbon layer, a fiber filter screen and a membrane filter layer are sequentially and fixedly connected to the interior of the middle-section filter box from top to bottom. According to the multi-stage denitrification deep-bed filter tank, the cleaning brush is arranged in the top end filter tank and is matched with a sliding structure of an air cylinder, a driving motor and a movable plate, so that automatic cleaning of a coarse sand layer is realized, and the cleaning brush is driven by the driving motor, and the air cylinder enables the movable plate to move back and forth along a supporting sliding rod; organic matters, microorganism residue dirt and impurities accumulated on the coarse sand layer are effectively removed, the cleanliness of the pre-filtering layer is remarkably improved, and the phenomena of hardening and blocking of a filter material are effectively prevented.

The invention discloses a long-time-sequence microorganism enrichment sampling cup which comprises a cup body and a cup cover meshed with the cup body in a sealed mode, a multi-stage filtering assembly is arranged in the cup body, a liquid injection opening, a multi-stage liquid injection pipeline, a multi-stage liquid outlet pipeline and a pressure relief pipeline are arranged on the cup body and the cup cover, and a plug is arranged at an end opening of the liquid outlet pipeline. The device has the beneficial effects that through a three-stage membrane filtering structure, impurities are effectively removed, and the effective concentration of a sampled product is improved; a plurality of liquid injection ports are arranged, after a sample is filtered, multi-stage injection of the stationary liquid is realized, the stationary liquid is ensured to be in full contact with the sample, the impurity content is reduced, and the microorganism purity and the sampling efficiency are improved; a plurality of pressure release valves are arranged, so that after the sample enrichment operation is completed, the pressure of the sampling cup is quickly released, the sampling process is simplified, and the scientific investigation experiment efficiency is improved; the device adopts a modular design, is simple and stable in structure, is convenient to operate and sample, and is particularly suitable for carrying and transporting scenes of underwater vehicles in scientific investigation experiments.

The invention discloses a mineral substance adjusting method and system of a water purifier, the water purifier and a medium. The mineral substance adjusting method comprises the following steps: calculating a target divalent ion contribution value according to a monovalent ion rejection rate, a divalent ion rejection rate, first detection data and second detection data; calculating a monovalent ion mineral retention value and a divalent ion mineral retention value according to the monovalent ion rejection rate, the divalent ion rejection rate and the target divalent ion contribution value; and adjusting a water mixing valve based on a comparison result of the monovalent ion mineral retention value or the divalent ion mineral retention value and a set retention value, so that water is introduced into the first water purification system according to a proportion to realize mineral adjustment. The ion mineral retention value is calculated according to the front and back detection data of the first membrane filter element in the second water purification system, the proportion adjusting system is adjusted according to the comparison result of the ion mineral retention value and the set retention value so as to control the water passing amount of the first water purification system, the mineral content is automatically adjusted according to the user requirement, and the user experience degree is enhanced.

The utility model discloses an industrial RO membrane filter element membrane bag assembling workstation, which comprises a base station main body, the base station main body is provided with a membrane feeding mechanism, a separation net feeding mechanism, a membrane assembly assembling mechanism and a membrane assembly discharging mechanism, the membrane assembly assembling mechanism comprises an assembling platform, an assembling gap is formed in the assembling platform in a penetrating manner, and the separation net feeding mechanism and the membrane assembly discharging mechanism are arranged in the assembling gap. The diaphragm feeding mechanism comprises a diaphragm winding drum module, a diaphragm dragging module and a diaphragm cutting module used for cutting off diaphragms, the partition net feeding mechanism comprises a partition net winding drum module, a partition net downward conveying module and a partition net cutting module used for cutting off partition nets, and the partition net downward conveying module comprises a partition net clamping structure. And the effects of high machining precision, uniform size and high machining efficiency are achieved.

The invention belongs to the technical field of sewage treatment, particularly relates to an MBR (Membrane Biological Reactor) for deeply treating sewage in an urban sewage treatment plant, and provides the following scheme aiming at the problems that the sewage treatment process is interrupted, the cleaning is incomplete, aeration holes are blocked by dirt and the like in the existing membrane filter tube cleaning process. The sewage treatment device comprises a sewage tank, two treatment tanks are arranged in the sewage tank, fixed pipes are fixed in the two treatment tanks, the outer walls of the two fixed pipes are rotationally sleeved with two hollow rotating discs, and a plurality of membrane filter pipes are rotationally connected between the two hollow rotating discs located in the same treatment tank. The treatment tanks can be alternately used when the membrane filter tube is cleaned, sewage treatment can be continuously completed, the membrane filter tube can be cleaned, the inner wall of the membrane filter tube can be uniformly coated with a cleaning agent in the cleaning process, and the membrane filter tube is effectively cleaned.

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

The invention relates to the technical field of reverse osmosis filtration, and discloses a reverse osmosis membrane filter element assembly and a use method thereof.The reverse osmosis membrane filter element assembly comprises two annular plates, a hollow cylinder is rotationally connected between the two annular plates, a motor is fixedly connected to the top of the upper annular plate, and the motor drives a large gear to rotate through a small gear on a first rotating shaft; the large gear drives the hollow cylinder to rotate, the hollow cylinder drives the first filter screen and the fixing plate to rotate when rotating, and the second filter screen slides in the sliding groove to extrude the spring to generate elastic force, so that the first filter screen and the second filter screen are staggered, the size of a filter screen opening is reduced, large particles in water are blocked in the first filter screen, and the filtering effect is achieved; when the hollow cylinder stops rotating, the filter screen II resets under the action of the elastic force of the spring, so that the filter screen openings are aligned, particles in the filter openings are thrown out under the action of inertia force, and filtered water flows into the next process through the water outlet, so that impurities are prevented from flowing out from the filter openings, and the filtering effect is improved.

The utility model belongs to the technical field of tobacco production, and particularly relates to a device for cleaning a barrel-type film-covered filter element, which comprises a dust collection barrel, a cleaning air knife assembly, a catch wheel, a carrier roller and a power-assisted air knife assembly, and is connected with the barrel-type film-covered filter element cleaning assembly in a manner that the barrel-type film-covered filter element is sleeved outside the cleaning air knife assembly; the outer surface of the barrel-type membrane filter element is in rotary contact with the outer walls of the two carrier rollers respectively, and the end face of the blind cover of the barrel-type membrane filter element is in rotary contact with the rotary end of the catch wheel 3. The device disclosed by the utility model can shorten the time consumed by soot blowing and cleaning of a single filter element, greatly improve the cleaning efficiency, avoid the damage to the filter element or pollution and damage to the environment caused by a traditional soot blowing mode, save the energy consumption of compressed air used for soot blowing, and have important significance in popularization in the whole tobacco industry.

The invention relates to the technical field of ship ballast water treatment, and particularly discloses a ship ballast water advanced treatment device and method.The ship ballast water advanced treatment device comprises a base, supporting legs are fixedly installed at the four corners of the top of the base, and a treatment tank is fixedly installed at the tops of the supporting legs. A set of complete and efficient ballast water treatment flow is constructed, large-particle impurities are effectively intercepted by the filtering mechanism, and the burden of subsequent treatment is relieved; the stirring mechanism realizes full mixing of the disinfectant and the ballast water, so that the disinfection effect is improved; and finally, the treated ballast water flows into a purifier and is sequentially purified layer by layer through an activated carbon filter element, an ultrafiltration membrane filter element, a nanofiltration membrane filter element and a reverse osmosis membrane filter element, tiny impurities, bacteria, viruses and various pollutants in the water are further removed, and the treatment quality of the ballast water is improved in the whole process.

The utility model discloses ultrafiltration membrane integrated water purification equipment which comprises an outer box internally provided with a tank body device area and an ultrafiltration water purification area, an integrated combined tank body is arranged in the tank body device area and comprises a raw water tank, a coagulation tank, a sedimentation tank, an aeration tank and a filter tank which are communicated in sequence, an ultrafiltration skid-mounted frame, a dosing skid-mounted frame and a purified water storage tank are arranged in the ultrafiltration water purification area, a plurality of ultrafiltration membrane filters are arranged in the ultrafiltration skid-mounted frame, shell passes of the ultrafiltration membrane filters are connected in series, a shell pass water inlet pipe is connected with a clean water filter chamber of a filter tank, a shell pass water outlet pipe is connected with a sewage discharge channel, and tube passes of the ultrafiltration membrane filters are connected in series; the water outlet end is connected with the top of the purified water storage tank. According to the utility model, the integrated level is high, raw water entering the ultrafiltration membrane filter can be pre-filtered, large granular impurities in the raw water can be intercepted in the combined tank body, and the residual impurities in the ultrafiltration membrane filter can be effectively reduced, so that the service life of the ultrafiltration membrane filter is prolonged, and the maintenance frequency of the ultrafiltration membrane filter is reduced.

The invention discloses a PTFE composite emulsion and a membrane filter material, the PTFE composite emulsion comprises a polytetrafluoroethylene dispersion liquid and bentonite added in the polytetrafluoroethylene dispersion liquid, the polytetrafluoroethylene dispersion liquid comprises polytetrafluoroethylene, a silane coupling agent and deionized water, and the addition amount of the bentonite is 0.02-0.05 wt% of the polytetrafluoroethylene. After the bentonite is added into the polytetrafluoroethylene dispersion liquid, microscopic detection shows that the base material impregnated by the polytetrafluoroethylene dispersion liquid can effectively avoid emulsion condensation linearity on fibers, and the distribution uniformity of the emulsion on the fibers of the base material is improved.

The utility model relates to a developing solution recycling system which comprises a developing tank, a delivery pump, a collecting tank, a nano bubble removing device, a transfer tank, a rotary membrane filtering device, a backwashing collecting tank and a high-speed centrifugal device, the nano bubble removing device is used for removing hydrophobic particles in the developing solution, the developing solution is conveyed into the rotating membrane filtering device from the transfer tank, the rotating membrane filtering device is used for separating suspension liquid containing high-concentration, high-viscosity and high-solid-content materials in the developing solution to the backwashing collecting tank, and the filtered developing solution is discharged and recycled. And conveying the suspension to a high-speed centrifugal device to separate solid film residues from liquid. According to the developing solution recycling system, the developing solution can be recycled in a full-automatic operation mode, a filter element is not needed for filtering, manpower and dangerous solid waste treatment cost are saved, and therefore the problem that the yield of PCBs is gradually reduced along with pollution of the developing solution is solved.

The utility model discloses a backwash zero stale water purification system, including preposed filter element and membrane filter element, preposed filter element includes first water inlet and first water outlet, the first water inlet is communicated with water inlet pipe and blow-off pipe, water inlet pipe is equipped with first valve, blow-off pipe is equipped with second valve, membrane filter element includes second water inlet, clean water mouth and waste water mouth, the second water inlet is communicated with the first water outlet, the purified water port is communicated with a water storage barrel, and the water storage barrel is used for receiving and storing purified water flowing out of the purified water port of the membrane filter element, so that when the second valve is opened, the purified water in the water storage barrel is used for backwashing the membrane filter element and the front filter element and is discharged through a blow-off pipe; the purified water backwash can wash out impurity microorganisms and the like intercepted in the front filter element without remaining in the filter element, so that the problem that the filter element is blocked and needs to be frequently replaced is solved, the problem of secondary pollution caused by reproduction and fermentation of the substances in the filter element can be prevented, and the water quality is prevented from influencing the water health of a user.

The invention provides a grinding fluid filtering system of a grinding machine and a high-precision numerical control thread grinding machine used for the grinding fluid filtering system. The grinding fluid filtering system comprises a filtering assembly, the filtering assembly comprises a coarse filtering mechanism, and the coarse filtering mechanism comprises a moving assembly arranged in a shell and used for filtering cooling liquid filter residues and a collecting assembly arranged on the moving assembly and used for collecting the filter residues; the cleaning assembly is arranged on the moving assembly and is used for cleaning the filter screen; the coarse filtering mechanism adopts an annular metal filter screen, so that the filtering area is increased, a push strip collects filter residues, and a cleaning assembly prevents blockage; the centrifugal filtering mechanism feeds cooling liquid into a centrifugal tank at a high speed through a pressurizing assembly, and impurities are precipitated and separated due to density difference; the membrane filtering mechanism performs fine filtration through a filtering membrane, the pressure washing assembly drives cooling liquid to reversely wash the filtering membrane through the upper and lower pressure difference, attached impurities are removed, and the cooling liquid cleaning efficiency and the machining precision are remarkably improved in cooperation with the anti-blocking sweeping and washing functions.

The invention discloses freeze-drying equipment for milk powder production and a processing technology thereof, and relates to the technical field of milk powder drying. The device comprises a milk tank, the outer wall of the milk tank is connected with a film filter through a pipeline, the top of the right end of the film filter is provided with a U-shaped pipe, the right side of the U-shaped pipe is provided with a liquid nitrogen barrel, the bottom of the liquid nitrogen barrel is provided with a heating assembly, the bottom of the heating assembly is provided with a cooling mechanism, and the cooling mechanism is internally provided with a refining device for refining milk powder. An anti-pollution device for preventing external cold air from polluting milk powder is arranged in the refining device, and an electric sliding rail is fixedly installed on the top of the inner wall of the liquid nitrogen barrel. According to the invention, the trapezoidal block can be driven to horizontally slide to distinguish up-to-standard milk powder from non-up-to-standard milk powder, so that the problem that the quality of the milk powder is difficult to detect in the production and discharging process of the milk powder is avoided, synchronous discharging of the milk powder with difference in quality and deficiency is prevented, the condition that the non-up-to-standard milk powder is mixed with good milk powder is avoided, and the overall quality of a finished product is improved.

The invention belongs to the technical field of petrochemical engineering, and relates to a continuous coking production system and process method for hydrogenated unconverted oil, and the production system comprises a membrane filter, a raw material tank, a homogenizer, a tubular furnace, a coking machine, an oil cooler and a stock bin. According to the invention, the continuous production of the high-quality petroleum coke is realized by combining a synergistic process method of membrane filtration, modification, homogeneous emulsification and tubular furnace coking machine coupling with a graphite adding and hydraulic conveying technology without a noble metal catalyst. The sulfur content, the ash content and the volatile components of the petroleum coke prepared by the technological method all meet the industrial standards, the requirement of pre-culture low-emission anode coke of electrolytic aluminum can be met, and the cost is low.

The invention discloses a negative carbon plate tower type stainless steel membrane bacteria and algae water treater which comprises a solar photovoltaic cell assembly, a circuit control device, an upper water tank, a three-dimensional plate tower type algae pool, an LED light-emitting plate assembly, a stainless steel membrane filtering assembly, a shading algae sedimentation pool, a peristaltic pump, a dredge pump and a water outlet pipe. The three-dimensional plate-type tower-shaped algae pool is arranged above the ground surface and below the upper water tank, and the upper water tank is used for receiving sewage to be treated and enabling the sewage to flow into the three-dimensional plate-type tower-shaped algae pool through gravity; the shading algae sedimentation tank is arranged to be of a buried bucket-shaped structure by utilizing the characteristic that algae naturally settles in a shading environment, and the stainless steel membrane filtering assembly is arranged at the upper part of the shading algae sedimentation tank; the method not only improves the treatment efficiency and quality, but also realizes negative emission of carbon dioxide, provides a new thought for benefit increase of sewage technical treatment in the carbon economy era, and makes a contribution to relieving global climate warming.

The invention provides an ester exchange reaction separation coupling device and method, and belongs to the technical field of chemical engineering, the ester exchange reaction separation coupling device comprises a reaction kettle, a circulation pipeline and a catalyst preparation tank; the top of the reaction kettle is provided with a feed port, and the bottom is provided with a discharge port; the circulating pipeline is located on the outer side of the reaction kettle, and the two ends of the circulating pipeline are communicated with the feeding port and the discharging port respectively; the circulating pipeline is sequentially connected with a membrane filtering unit, a micro-interface strengthening mixer and a pre-reactor from the discharging opening to the feeding opening, and the circulating pipeline is further connected with a circulating pump; the catalyst preparation tank is connected to the position, between the membrane filtration unit and the micro-interface strengthening mixer, of the circulation pipeline through a feeding pipe; the circulating pipeline is provided with a waste catalyst discharging pipe at the upstream of the feeding pipe, and when part of the waste catalyst in the circulating pipeline is regularly discharged, a new catalyst is supplemented to the circulating pipeline at the same time; according to the arrangement, after mixed feed liquid is introduced into the reaction kettle, the influence of discharge of a waste catalyst on the transesterification reaction in the reaction kettle can be reduced.

A sludge suction and dehydration treatment vehicle, comprising a vehicle frame (1). An enclosed compartment (4) is provided above a chassis of the vehicle frame (1), and a powertrain is provided under the chassis. A PAM preparation and feeding system (2), a trash screening machine (3), a sludge collecting device (5), a sludge conditioning device (6), a high-pressure membrane filter press system (9), and a sludge discharging conveyor (15) are provided in the enclosed compartment (4) in sequence. The input end of the trash screening machine (3) is connected to a corrugated conveying pipe (10). An end of the corrugated conveying pipe (10) is provided with a sludge suction pump (14). The output end of the trash screening machine (3) is connected to the sludge collecting device (5). A feeding pump (21) is provided at the top of the sludge collecting device (5). The feeding pump (21) pumps, by means of a pipe, sludge in the sludge collecting device (5) to the sludge conditioning device (6). The output end of the PAM preparation and feeding system (2) is connected to a pipe of the feeding pump (21). The output end of the sludge conditioning device (6) is connected to the high-pressure membrane filter press system (9). The sludge discharging conveyor (15) is disposed below the high-pressure membrane filter press system (9) to discharge sludge.

The utility model discloses a tubular membrane filtering device and relates to the technical field of filters. The tubular membrane filtration device comprises a water inlet pipe, a first filter plate is embedded in the water inlet pipe, the top of the first filter plate is connected with a drainage pipe, the bottom of the water inlet pipe is connected with a shell, the interior of the shell is connected with a first tank body, the interior of the first tank body is connected with a second filter plate, and the second filter plate is connected with a second filter plate. Through the arrangement of the drainage pipe, the impact force of liquid is reduced during filtration, so that the first filter plate is prevented from being damaged due to the impact of the liquid, and meanwhile, due to the arrangement of the sizes of the filter holes among the first filter plate, the second filter plate and the filter pipe, the filter efficiency is improved. And the liquid can be filtered by three different filtering apertures in a grading manner, so that the filtering effect is better.

The invention belongs to the technical field of sewage treatment equipment, particularly relates to an MBR (Membrane Biological Reactor) for advanced treatment of papermaking wastewater, and aims to solve the problems that dirt is attached to the outer wall of the existing MBR, the dirt in a reaction tank cannot be removed, the treatment function is single, and the water quality cannot be further improved. A sewage treatment structure for treating sewage is arranged in the reaction tank, a rotating shaft is rotatably connected to the inner wall of the bottom of the reaction tank, a bearing plate for bearing the sewage treatment structure is fixed to the top of the rotating shaft, and scrapers are fixed to the two sides of the top of the bearing plate. In the sewage treatment process of the membrane filter tube, dirt attached to the outer wall of the filter frame can be removed through cooperation of the bearing plate and the scraper, meanwhile, oxygen can be alternately injected into the reaction tank and the clear water tank through rotation of the bearing plate, the water quality in the clear water tank can be improved, and sewage in the reaction tank can be conveniently treated.

The invention discloses a crystallization device for sodium sarcosinate production, relates to the technical field of crystallization devices, and aims to solve the problems that when supersaturated liquid drops make contact with the wall surface of a low-temperature gas-liquid separator, water evaporation is intensified, the solubility of solute is further reduced due to temperature reduction, crystal precipitation is accelerated under the dual action, the supersaturated liquid drops are prone to being attached to the wall of a tank in the crystallization process, and the crystallization effect is poor. In order to solve the problems that the heat exchange efficiency is influenced by scaling of a tank wall, wall-adhered crystals cannot be recycled and the yield is reduced in the prior art, an evaporator is mounted on one side of a gas-liquid separator, a cyclone separator is mounted on the other side of the gas-liquid separator, an ultrasonic disperser is mounted on one side of the cyclone separator, a membrane filter is mounted on one side of the ultrasonic disperser, and a water outlet is formed in the other side of the membrane filter. A gas-liquid separator cleaning mechanism is mounted in the gas-liquid separator, a gas-liquid separator scraping frame is mounted at one end of the gas-liquid separator cleaning mechanism, and a membrane filter cleaning mechanism is mounted in the membrane filter.

The invention provides high-precision PPS / PTFE membrane filter material processing equipment and a processing technology thereof, and relates to the technical field, the high-precision PPS / PTFE membrane filter material processing equipment comprises a rack, a lifting guide rod is slidably connected to the rack, a needling mechanism is fixedly mounted at the lower end of the lifting guide rod, and the needling mechanism comprises a needling beam plate, a sliding needle frame, an inner needle connecting rod, an outer needle cylinder and a bundling assembly; the sliding needle frame is connected to the needling beam plate in a sliding mode, a plurality of driving guide blocks are arranged on the lower side of the needling beam plate, a driving rack is arranged on the lower side of an extending block, a driving gear is arranged at the upper end of an inner needle connecting rod, and a wedge-shaped sliding block is rotationally connected to the upper side of the driving gear; the collecting assembly comprises a collecting support, a collecting worm, a collecting worm gear, a transmission chain and a collecting wheel, the outer needle cylinder is provided with a communicating sliding groove, and the collecting wheel protrudes out of the outer wall of the outer needle cylinder. According to the invention, the bundling assembly can be used for bundling and filling the puncture hole, so that the purpose of needling without holes is achieved, and the filtering efficiency is ensured.

The utility model relates to the technical field of water purification, in particular to a backwashing ultrafiltration filtering device, which comprises a shell, a first water passing port, a second water passing port and a backwashing port, comprising a cylinder body and an ultrafiltration membrane coated on the cylinder body; a water passing cavity is formed between the outer surface of the ultrafiltration membrane filter cartridge and the interior of the shell; a first electromagnetic valve is arranged at one end of the first water passing pipe; a second electromagnetic valve is arranged at one end of the backwashing water outlet pipe; a fourth electromagnetic valve is arranged at one end of the backwashing pipe; a third electromagnetic valve is arranged at a water inlet of the second water passing pipe; a fifth electromagnetic valve is arranged at a water outlet of the second water passing pipe; and the third water passing pipe is positioned between the backwashing pipe and the fifth electromagnetic valve, so that the backwashing efficiency is improved.