567 results about "Membrane filter" patented technology

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 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 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 discloses a multi-stage separation synergistic power coal washing process, and belongs to the technical field of coal washing processing. The TDS intelligent dry separation system, the dry-wet combined desliming process, the super coal slime classification cyclone, the super coal slime dense medium cyclone and the ultrahigh-pressure elastic squeezing filter press are in multi-stage cooperative linkage to be used for power coal washing, the moisture content and the ash content are reduced to the maximum extent in the separation stage, and the heat productivity of the power coal is increased. Compared with a process before improvement, the power coal washing process with cooperation of multi-stage separation has the advantages that the gangue sorting efficiency and the power coal productivity are improved, the super coal slime dense medium cyclone, the super classification cyclone and the ultrahigh-pressure elastic squeezing filter press are orderly used in the power coal washing process, the water content of a filter cake is greatly reduced, and the water content of the filter cake is greatly reduced. The water content of the filter cake is obviously superior to that of a common quick-opening membrane filter press and is lower than that of the filter cake of dried coal slime, so that the fluctuation range of the heat value of the power coal is lower, the heat value of gangue is reduced, and the heat value of the power coal is improved.

The utility model discloses an efficient particle membrane filtering device. The efficient particle membrane filtering device comprises a skid structure, the skid structure comprises a plurality of particle film high-speed filters, the particle film high-speed filters are arranged in a single-branch, multi-branch and grouped mode in a skid, each particle film high-speed filter comprises a column type filter assembly, a water inlet multi-way valve and a water production multi-way valve, and a valve, a pipeline, an instrument and an electric control system are further arranged in the skid. The filter operates according to the sequence of operation, waiting, backwashing and commissioning, solves the problem that a conventional filter is large in backwashing water amount, easy to be polluted and blocked and long in process, can realize high-flow-rate, high-precision and high-stability filtration, can treat large-flux incoming water, and reduces the use of filter materials; a column type skid structure is adopted, the occupied area of the filter is greatly reduced, the technological process is shortened, flexible and free permutation and combination are achieved, various complex water qualities can be dealt with, and the requirement for the inlet water quality is relatively wide.

The application discloses a membrane filter with a centrifugal structure and relates to the technical field of membrane filters.The membrane filter comprises a filter tank, a stirring device is arranged at the top of the filter tank, a membrane filter is fixedly connected in the filter tank, a residue discharging device is arranged at the bottom of the inner surface of the membrane filter, an anti-adhesion device is arranged at the top of the filter tank and close to the membrane filter, a thread sleeve is screw-connected to the inner surface of the thread sleeve, a threaded driving column is fixedly connected to the top end of the threaded driving column, a rotary connector is fixedly connected to the top of the rotary connector and the bottom of a butterfly plate, a conical disc is fixedly connected to the bottom end of the threaded driving column, a crescent piece is fixedly connected to the outer surface of the conical disc, and a centrifugal device is fixedly connected to the bottom of the conical disc.The membrane filter with the centrifugal structure has high adaptability, can make fluid subjected to centrifugal action, can uniformly stir and sprinkle the fluid, can adapt to oil dirt impurities, can reduce the influence of the adhesion of the oil dirt impurities, and has good filtering effect.

A sampling device including an intake pump coupled with a volume controller to provide a known volume of samples such as liquid collected through a specialized hollow membrane filter. Once the known volume of sample is filtered the intake pump is turned off, an air pump turns on and removes residual or excess sample. The membrane filter is then preserved for extraction of DNA / RNA.

The utility model relates to the field of environment-friendly construction, and discloses an automatic membrane-changing filtering device which comprises a base, the top of the base is fixedly connected with a back plate, the top of the back plate is fixedly connected with a top plate, the bottom of the top plate is fixedly connected with a telescopic air cylinder, and the output end of the telescopic air cylinder is fixedly connected with a filter. The left side and the right side of the filter are fixedly connected with water conveying pipes, the middle of the base is fixedly connected with a drainer, the front side of the back plate is rotationally connected with a driven shaft, and a driving assembly is installed on the rear side of the base. According to the utility model, after the filter membrane is used for a long time, the telescopic air cylinder is driven to drive the filter to lift up, and then the servo motor is driven to drive the driving shaft to roll up, so that the used filter membrane is taken away from the lower part of the filter and a new filter membrane is driven to move to the lower part of the filter; and then the telescopic cylinder is driven to press the filter membrane between the filter and the drainer, so that the filter membrane can be quickly replaced, and the working efficiency is improved.

The utility model relates to an ultrafiltration membrane filtration system. The filtration system comprises a water supply pump, a pre-filter, a circulating cross-flow pump and a plurality of ultrafiltration membrane filtration units, the water supply pump is connected with the pre-filter through a pipeline; a water outlet of the pre-filter is connected with a water inlet of the circulating cross-flow pump through a water supply pipeline; a water outlet of the circulating cross-flow pump is communicated with the circulating water inlet pipeline; a water inlet of the ultrafiltration membrane filtering unit is communicated with a circulating water inlet pipeline through a circulating water inlet branch; a water inlet valve is arranged on the circulating water inlet branch; a concentrated water port of the ultrafiltration membrane filtration unit is communicated with a circulation loop pipeline through a circulation recovery branch, and the circulation loop pipeline is further communicated with a water supply pipeline; a circulating valve is arranged on the circulating recovery branch; a water producing port of the ultrafiltration membrane filtering unit is communicated with a water producing pipeline through a water producing branch; the circulating water inlet branch is also communicated with a water drainage pipeline; and a backwashing valve is arranged on the water drainage pipeline. According to the scheme provided by the utility model, the performance of water production and backwashing can be improved, and the flushing structure of ultrafiltration membrane filtration is simplified.

The utility model discloses a kind of RO reverse osmosis membrane filter element, including filter cylinder, the inside fixed mounting of filter cylinder is equipped with bulkhead, the middle part fixed mounting of bulkhead is equipped with permeate collection pipe, the inside of filter cylinder is provided with filter assembly;The two ends of filter cylinder are respectively threadedly connected with liquid inlet end cap and liquid outlet end cap, and the side wall of liquid outlet end cap is equipped with sewage outlet. The utility model is through multistage modularization filtration design, effectively improves water purification effect, while simplifies maintenance process, reduces cost, ensures the safety and purity of effluent water quality.

The invention discloses a processing method for fractionation and rapid crystallization of palm oil, which comprises the following steps: (1) heating and controlling a palm oil raw material to be fractionated to 55-65 DEG C (crystal breaking), pumping the palm oil raw material into a crystallizing tank, and then cooling the palm oil raw material to about 25 DEG C under the action of rapid cooling of cooling water (or chilled water) and stirring; (2) continuously reducing the temperature of the palm oil raw material in the crystallizing tank by using chilled water, adding a certain proportion of palm oil (solid-liquid mixture) which is completely crystallized and is in an unseparated state into the crystallizing tank at the interval of 25.0-18.0 DEG C as a seed crystal, and controlling the stirring speed of the crystallizing tank at 15-30r / min until the palm oil raw material is completely cooled and crystallized; (3) after crystallization is completed, if seed crystals need to be added into the crystallizing tank which is cooling and crystallizing, pumping the seed crystals into the crystallizing tank which needs to be added with the seed crystals through a pump; otherwise, immediately pumping into a membrane filter for filtering and separating (preventing the tank from being burnt) to obtain liquid oil and stearin. The palm oil seed crystal is added, so that the crystallization time can be shortened; and through seed crystal induction, the formation of stable-form crystals is accelerated, excessive crystallization is avoided, and the interception loss of filtration is reduced, so that the liquid oil yield is improved.

The utility model belongs to the technical field of water purification equipment, and discloses a water purifier which comprises a first RO (Reverse Osmosis) membrane filter element, a booster pump, a front filter element, a second RO membrane filter element and a rear filter element, and the booster pump and the front filter element are connected in series and are connected with a water inlet end of the first RO membrane filter element; the water inlet end of the second RO membrane filter element is connected with the concentrated water outlet end of the first RO membrane filter element, the purified water outlet end of the second RO membrane filter element and the purified water outlet end of the first RO membrane filter element are arranged in parallel, and the flux of the second RO membrane filter element is smaller than that of the first RO membrane filter element; the rear filter element is connected to the purified water outlet end of the first RO membrane filter element and the purified water outlet end of the second RO membrane filter element. According to the water purifier, only the second RO membrane filter element needs to be replaced, and the later maintenance cost is low.

This invention discloses a water purification device, including a filtration unit and a reverse osmosis filter. The filtration unit includes a housing and an ultrafiltration membrane filter element and an adsorption filter element installed inside the housing. The housing is provided with a raw water inlet, an adsorption outlet, and an ultrafiltration outlet. Water filtered by the ultrafiltration membrane filter element is configured to flow out through the ultrafiltration outlet and also configured to flow out through the adsorption outlet after being filtered by the adsorption filter element. The reverse osmosis filter includes a raw water inlet, a pure water inlet, and a wastewater inlet. The adsorption outlet is connected to a water tap via a domestic water pipe. The ultrafiltration outlet is directly or indirectly connected to the raw water inlet. The pure water inlet is directly or indirectly connected to a drinking water pipe, which is connected to the water tap. An eighth control valve is provided on the domestic water pipe, configured to regulate the water flow and on / off state in the domestic water pipe. This invention can avoid clogging of the ultrafiltration membrane filter element, realize the mixing of domestic water and pure water, and adjust the TDS of the mixed water.

The utility model discloses a membrane filter press cleaning device, and particularly relates to the field of sewage treatment, the membrane filter press cleaning device comprises a driving frame, a supporting frame is arranged below the driving frame, a connecting seat is arranged on the inner top wall of the supporting frame, and a fixing seat is fixedly connected to the bottom wall of one side of the connecting seat; a screw rod is rotatably connected between the two limiting seats on the upper surface of the connecting seat, the outer side of the screw rod is sleeved with a moving block in a threaded mode, the bottom wall of the moving block is connected with a moving seat, the fixed seat and the moving seat are each rotatably connected with two rotating rods, and a first inserting rod is welded to one end of each rotating rod on the moving seat; a second inserting rod is welded to one end of each of the two rotating rods on the fixed seat, a cleaning brush roller is arranged between the fixed seat and the movable seat, a connecting shaft is fixedly arranged at the position of a center shaft of the cleaning brush roller in a penetrating mode, and inserting holes are formed in the two ends of the connecting shaft; through the arrangement of the structure, the cleaning brush roller can be quickly and conveniently disassembled, replaced or cleaned in the later period, and the practicability of the device is improved.

The utility model discloses a water quality filter with a quick connector, which relates to the field of water quality filtration and comprises a main body shell, one end of the main body shell is in threaded fixed connection with an upper cover body, and one end of the main body shell far away from the upper cover body is fixedly connected with a raw water inlet. A purified water outlet is fixedly formed in the end, away from the upper cover body, of the main body shell, an inner supporting frame is fixedly clamped to the inner side edge of the main body shell, a PP filter element is clamped to the inner side edge of the main body shell, an inner supporting shell is fixedly clamped to the inner side edge of the main body shell, and the outer side edge of the inner supporting shell is sleeved with a sealing ring. The inner side edge of the inner supporting shell is filled with an ultrafiltration membrane filter element, the inner side edge of the inner supporting frame body is provided with an activated carbon cavity, the bottom end of the inner supporting shell is fixedly buckled with a supporting bottom shell body, and a split structure is adopted, so that the internal filter element can be replaced and cleaned after disassembly; meanwhile, the filtering and purifying effects are better under multiple filtering and purifying structures.

Methods for distinguishing particles in a fluid sample are disclosed. In one embodiment, the method includes acquiring a background SIMI image and a background brightfield image of a membrane filter while the membrane filter is free of a fluid sample, introducing a fluid sample onto the membrane filter, acquiring a SIMI image and a brightfield image of filtered particles resting on the membrane filter, distinguishing between the filtered particulates and the membrane filter based on the background SIMI image, generating a particle mask based on the SIMI image, and detecting beads via the particle mask. Methods for distinguishing particulates include distinguishing between viable and non-viable cell populations, distinguishing between cellular and non-cellular particulates, distinguishing between biological and non-biological particulates, distinguishing between first and second protein types, determining stability of monoclonal antibody drugs, identifying beads in a cell therapy, and detecting bacteria.

A dry fractionation process for high-solid-index grease comprises the following steps: a, raw oil at the temperature of T1 enters a pre-crystallization tank for pre-crystallization, and the pre-crystallization temperature is T2; b, filling the pre-crystallized raw oil in a membrane filter press, and cooling the raw oil in the membrane filter press after filling until the raw oil is cooled to a final temperature T3; c, starting an extrusion system of the membrane filter press to extrude the raw oil to obtain fractionation liquid oil and stearin, and purging a filter chamber after extrusion is finished; wherein the value range of T1 ranges from 40 DEG C to 50 DEG C, the value range of T2 ranges from 10 DEG C to 35 DEG C, and the value range of T3 ranges from 10 DEG C to 25 DEG C. The membrane type filter press can give consideration to extrusion and crystallization, pre-crystallized oil with a good flowing type is conveyed into the high-pressure membrane type filter press through a pump, pre-crystallized raw oil is subjected to program control cooling through cooling water, finally, the final temperature is reached, extrusion is conducted again, the automation degree is high, and the PKS yield is high.

The utility model discloses an advanced treatment device for printing and dyeing wastewater, which comprises a coagulation treater, a sediment filter tank is arranged at the output end of the coagulation treater, a centrifugal separator is connected to the tail end of the sediment filter tank, an activated carbon filter tank is arranged at the tail end of the centrifugal separator, and a water outlet is formed in the tail end of the activated carbon filter tank. The tail end of the activated carbon filter box is connected with an ultrafiltration membrane filter, and the tail end of the ultrafiltration membrane filter is connected with a reverse osmosis membrane filter; according to the utility model, the procedures of coagulating sedimentation, precipitate separation, centrifugal separation of suspended particles, activated carbon filtration of fine substances, ultrafiltration membrane filtration and reverse osmosis filtration during sewage treatment can be realized in sequence, and the treatment effect on printing and dyeing sewage is good.

Method for vacuum drying of products, in particular membrane filters (12), such as dialyzers, especially after washing or functional testing, using microwave energy and an atmospheric multi-mode microwave chamber (14) and a sealed, microwave-transparent vacuum housing (26), for example made of polytetrafluoroethylene, PTFE, in the multi-mode microwave chamber (14), wherein the vacuum housing (26) has at least two separate compartments (28) and a vacuum sensor (30) in each of the compartments (28) for individually monitoring a vacuum in the respective compartment (28), the method comprising: - Arranging at least one product in each of the at least two compartments (28) and sealing the at least two compartments (28), - Creating a vacuum in the sealed compartments (28), - Closing the multi-mode microwave chamber (14), - Generating and coupling microwaves into the multi-mode microwave chamber (14), - Measurement of individual vacuum pressures (P1, P2, P3, P4, P5) in the at least two compartments (28) using the vacuum sensors (30), and - Control of microwave vacuum drying depending on the individually measured vacuum pressures (P1, P2, P3, P4, P5) in the at least two compartments (28).

The utility model discloses a recovery device for ceramic surface treatment wastewater, which is characterized in that a first treatment station is communicated with a first-stage filter vat through a diaphragm pump, the first-stage filter vat is communicated with a second-stage filter vat, a second pipeline connected with the second-stage filter vat is provided with a first valve, and the first valve is arranged between a reclaimed water tank body and a second treatment station; the reclaimed water tank body is communicated with a quartz sand tank through a water suction pump, the quartz sand tank is connected with an activated carbon tank, the activated carbon tank is communicated with a first RO membrane filter through a multi-stage centrifugal pump, the first RO membrane filter is connected with a second RO membrane filter, a second valve is mounted on a first pipeline connected with the second RO membrane filter, and the second RO membrane filter is communicated with the pure water tank body; and the pure water tank body is communicated with a third treatment station through a pressure pump and a third pipeline. The wastewater treatment device disclosed by the utility model has the advantages that new chemical substances are prevented from being introduced into water, filtering procedures are reduced, the equipment cost is reduced, the wastewater circulation speed is accelerated, and the wastewater circulation efficiency is improved.

The utility model relates to the technical field of hyaluronic acid production, in particular to a hyaluronic acid continuous production system. The hyaluronic acid continuous production system comprises a fermentation tank, the fermentation tank is connected with a membrane filter through a primary filter, a sampling opening is formed in the lower portion of the fermentation tank, a high-temperature steam pipeline is connected to the sampling opening, a filter plate is arranged in the primary filter, a rotary scraping plate is arranged below the filter plate, and a U-shaped filter membrane is arranged in the membrane filter. According to the system, the primary filter and the return pipeline are arranged, the primary filter is additionally arranged on the upstream of the membrane filter, impurities in fermentation liquor are removed in advance, the blocking rate of the membrane filter is greatly reduced, and the overall filtering efficiency is greatly improved by backwashing the primary filter through the return pipeline.

The utility model relates to a guide rail type filtering module device convenient to replace quickly, it includes base, sliding seat, first guide rail, second guide rail and filtering module, filtering module includes water pump, PP cotton filter core, preposition active carbon filter core, RO membrane filter core, postposition active carbon filter core and solenoid valve, and first guide rail and second guide rail are respectively horizontally established in the both sides of sliding seat, and sliding seat is set up on the base through first guide rail and second guide rail horizontal sliding, and water pump, PP cotton filter core, preposition active carbon filter core, RO membrane filter core, postposition active carbon filter core and solenoid valve are established on sliding seat. The utility model discloses the sliding seat is set up on the base through first guide rail and second guide rail horizontal sliding, and the base is fixed in the inner chamber of water dispenser, therefore, the sliding seat and filtering module of the utility model can remove the inner chamber of water dispenser, to be convenient for the user to carry out the work such as filter core replacement or maintenance spare part, and filter core replacement speed is fast.

The present application relates to the technical field of powder membrane filter element, and particularly relates to a numerical modeling method and system of sintered metal porous membrane filter material, which comprises obtaining powder membrane porosity and particle size distribution; initializing geometric space; generating particle sphere center coordinates and particle size; judging whether newly generated particle spheres overlap with original particle spheres; calculating theoretical total volume; judging the adjacent overlapping relationship between particle spheres, and using an array to record all original particle spheres overlapping with the generated particle spheres; calculating the overlapping volume between the newly generated particle spheres and all original particle spheres; calculating the actual total volume of the total particle spheres and the total porosity; and continuously iterating until the total particle spheres are less than the porosity of the powder membrane, and then stopping iteration. The present application provides a numerical model construction method of real physical microstructure characteristics of the powder membrane, generates an accurate model conforming to the entity structure characteristics of the porous membrane filter material, and is used for simulating the filtering characteristics of the porous material.

1. Name of the product in this design: Membrane Filter (1). 2. Purpose of this design: For quantitative filtration and retention of microorganisms in samples. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

Cleaning-in-place (CIP) systems utilize membrane filters for purifying liquid substances in many industries, including but not limited to, the dairy industry, breweries, pharmaceutical industry, and the food industry. These membrane filters undergo a rigorous cleaning process that despite cleaning can leave foulants on the membranes which hamper filter effectiveness. In addition to the cleaning, enzymes can be applied to the membranes to remove foulants and restore filtering effectiveness. However, introduction of enzymes into these CIP systems can be problematic if enzymes remain after cleaning. This disclosure provides a system and methods to mimic the membrane modules and verify that a correct inactivation procedure occurred. The systems and methods include a separate membrane sample so that no membrane modules need be removed to verify full enzyme inactivation.

The disclosure herein relates to a method of reducing background noise during integrity testing of membrane filter to increase sensitivity and more effectively disposition failing membrane filters.

The application provides a phosphogypsum residue field water treatment process based on a membrane coupling chemical reactor, relates to the technical field of wastewater resource treatment, and can selectively perform gradient precipitation on fluorine, phosphorus, nitrogen and sulfur, cooperates with a membrane filter for targeted design, realizes a membrane separation process resistant to high-concentration suspended solids, and can make the membrane flux attenuation rate less than 5% / day. The application can effectively separate fluorine, phosphorus and nitrogen from water to form mud with resource value, the value of the resource product per ton of water treatment is higher than the treatment cost, 80% of the recovered water meets the industrial recycling standard, and the phosphogypsum residue field water can be advantageously used for quasi-zero emission and deep high-value resource utilization.

The utility model provides equipment for pulse-type cleaning of a membrane filtration component, which relates to the technical field of cleaning and filtering equipment and comprises a cleaning pool, a bent baffle is fixed between the inner walls of two sides of the cleaning pool and close to the edge of one side, and an adjusting cavity is formed in the bent baffle. The top of the adjusting cavity extends to the top of the bent baffle, the bottom of the adjusting cavity extends to one side of the bottom of the bent baffle, a hollow filter plate is fixed between the inner walls of the two sides of the cleaning pool, and one side of the bent baffle is fixed to one side of the hollow filter plate. According to the device disclosed by the utility model, firstly, the fixed block is shifted to slide the cut-off plate towards one side of the opening, so that the opening is opened, water flow in the cleaning pool can flow to the hollow filter plate through the opening, and the water flow is filtered under the filtration of the cleaning membrane in the hollow filter plate; the filtered water flow is discharged through the water outlet pipe.

The utility model relates to the technical fields of film winding machine, specifically disclose a RO membrane filter core film winding device, including movable frame, one end of movable frame is equipped with first connecting plate, and the other end is equipped with second connecting plate, first connecting plate and second connecting plate all are installed on the base plate through first slide rail sliding block, install rotatable limit axle on first connecting plate, install the top axle that can reciprocate limit axle direction on second connecting plate, be provided with film press roller assembly between limit axle and top axle, film press roller assembly can be telescopically installed on movable frame, this RO membrane filter core film winding device prevents the position deviation and leads to the winding RO film to appear winding deviation when winding, and limit axle can drive filter core pipe rotation and wind, and film press roller assembly can extend to filter core pipe direction, and the edge winding is pressed tightly RO film, improves product quality.

The invention relates to a membrane filter element with a plate body having two planar outer surfaces 310, 312 and channels 330, 340 arranged therein. To provide a filter element with improved filtration performance and load-bearing capacity, the plate body is monolithically manufactured from an open-pore ceramic material and has a plurality of channels extending longitudinally between the outer surfaces, each channel 330, 340 having a triangular cross-section, and adjacent channels are separated from one another by a remaining wall 318, which is inclined upwards in sections. The channels 330, 340 can have straight sides or convexly curved sides 335.