CN117509826A - Automatic dredging type ultrafiltration membrane water treatment equipment - Google Patents

Abstract

The invention discloses automatic dredging type ultrafiltration membrane water treatment equipment, and relates to the technical field of water treatment. The device comprises a fixing frame, wherein a containing cylinder is fixedly arranged on the fixing frame, sealing covers are fixedly arranged at two ends of the containing cylinder, and fixing plates are respectively and slidably connected to the upper side and the lower side in the containing cylinder. According to the invention, through the relative movement between the upper and lower fixing plates, the filter element is in a stretching and tightening state in the filtering working state, the surface of the membrane wire is smoother and more stable in the stretching and tightening state, and the tightening state is beneficial to improving the impurity separation effect of the membrane wire; the membrane filaments in a loose state are in a cleaning process, and the membrane filaments in the loose state are better suitable for pressure and force field changes in a backwashing process, so that membrane filament breakage caused by too high tension is reduced, and the cleaning of the membrane filaments is enhanced; the tensile tension of the filter element is reduced in a natural state, the continuous tensile tension is reduced, the elastic fatigue of the membrane filaments is caused, and the service life of the membrane filaments is prolonged.

Description

Automatic dredging type ultrafiltration membrane water treatment equipment

Technical Field

The invention discloses automatic dredging type ultrafiltration membrane water treatment equipment, and relates to the technical field of water treatment.

Background

The ultrafiltration membrane water treatment equipment is professional equipment widely applied to treatment of drinking water, industrial water and waste water, suspended matters, colloid, bacteria, viruses, dissolved organic matters and other tiny particulate matters in water are removed by utilizing ultrafiltration technology, the conventional ultrafiltration membrane water treatment equipment is required to clean an inner ultrafiltration membrane part of the ultrafiltration membrane water treatment equipment regularly in the long-term filtration working process so as to ensure the filtration efficiency and effect, a common cleaning mode is normal washing or backwashing, the backwashing process is usually alternated in the working process of the device, the equipment is not required to be disassembled, the ultrafiltration membrane is cleaned by controlling the cleaning pressure and the cleaning period in the backwashing process of the conventional device, but because the membrane wire is usually in a fixed state in the equipment, the adhesiveness of impurities is inconsistent, when the membrane wire surface is cleaned by the cooperation of water pressure and water flow, the trafficability of the membrane wire after the impurities with weak adhesiveness are dredged is enhanced, the pressure born by the membrane wire surface is reduced, the membrane wire surface which is not cleaned in place locally is caused to be gradually piled up to form intractable impurities, the equipment is required to be disassembled regularly, the cleaning efficiency is low, and the equipment work is influenced.

Disclosure of Invention

The invention discloses automatic dredging type ultrafiltration membrane water treatment equipment with a dynamic cleaning function, and aims to overcome the problems in the background technology.

The technical implementation scheme of the invention is as follows: the utility model provides an automatic mediation formula milipore filter water treatment facilities, includes the mount, mount fixed mounting has holds a section of thick bamboo, hold the equal fixed mounting in both ends of section of thick bamboo and have sealed lid, sealed lid all is provided with the water purification mouth of a river, downside sealed lid run-through is provided with sewage pipe fitting, hold the equal sliding connection in section of thick bamboo upper and lower both sides have the fixed plate, hold a section of thick bamboo and symmetric distribution sealed lid and symmetric distribution the fixed plate cooperation forms sewage chamber and upper and lower symmetric distribution's water purification chamber, the sewage chamber is located upper and lower symmetric distribution between the water purification chamber, sewage pipe fitting with sewage chamber intercommunication, symmetric distribution have the filter piece between the fixed plate rigid coupling, sliding connection has symmetric distribution's slip ring frame in the sewage intracavity, symmetric distribution be provided with between the slip ring frame and expand the support the subassembly, expand the support the subassembly and be used for right the filter piece supports spacingly, hold the section of thick bamboo outside and install the pump, backwash pump and symmetric distribution between the sealed lid intercommunication has the three-way pipe, controller and backwash pump are connected.

As the improvement of above-mentioned scheme, sewage pipe spare is including first sewage pipe, first sewage pipe runs through and sliding connection in the downside sealed lid, first sewage pipe runs through and with the downside fixed plate fixed connection, first sewage pipe spacing sliding connection has the second sewage pipe, the upper end of second sewage pipe with the upside the fixed plate rigid coupling, first sewage pipe with the rigid coupling has the spring between the second sewage pipe, first sewage pipe with the second sewage pipe all with sewage chamber intercommunication.

As an improvement of the scheme, the filter element is composed of a plurality of groups of membrane wires which are distributed at equal intervals in the circumferential direction, and each group of membrane wires is in a spiral shape between the fixing plates which are distributed symmetrically up and down.

As the improvement of above-mentioned scheme, hold the inside upper and lower both sides of section of thick bamboo and all be provided with circumference evenly distributed's arc groove, the arc groove with the incline direction of filter element is the same, slip ring frame rigid coupling have with correspond arc groove limit sliding fit's stopper.

As the improvement of the scheme, the opposite sides of the sliding ring frames which are vertically and symmetrically distributed are provided with the scraping plates which are circumferentially and equidistantly distributed, and the scraping plates are used for cleaning impurities on the inner wall of the sewage cavity.

As the improvement of above-mentioned scheme, expanding and propping the subassembly including upper and lower symmetric distribution's supporting ring, the upside the supporting ring sliding connection is in correspondence the slip ring frame, the downside the supporting ring rigid coupling is in correspondence the slip ring frame, the fixed plate rigid coupling has a symmetric distribution's piston cylinder, the piston cylinder runs through the fixed plate and with sewage chamber and corresponding water purification chamber intercommunication, sliding connection has the piston rod in the piston cylinder, the downside the piston rod is located the piston cylinder outside the tip with the supporting ring rigid coupling that corresponds, the upside the piston rod is located the piston cylinder outside the tip with the supporting ring contact cooperation that corresponds, be provided with the expansion piece between the supporting ring of symmetric distribution, the expansion piece is used for laminating and supporting the filter.

As the improvement of above-mentioned scheme, the extension piece is including circumference equidistance distribution's outer arc board and interior arc board, outer arc board with the both ends of interior arc board are rigid coupling respectively in adjacent support ring, outer arc board with interior arc board is the elastic plate.

As an improvement of the scheme, the two circumferential side surfaces of the outer arc-shaped plate and the inner arc-shaped plate are fixedly connected with ball head supporting rods and ring head supporting rods which are distributed at equal intervals respectively, and the adjacent ball head supporting rods are in limit sliding fit with the ring head supporting rods.

As an improvement of the scheme, the concave surfaces and the convex surfaces of the outer arc-shaped plate and the inner arc-shaped plate are fixedly connected with a plurality of protruding blocks.

As an improvement of the scheme, the three-way valve further comprises a flow passage alternate valve, the flow passage alternate valve is fixedly arranged at the three-way junction of the three-way pipe, and the controller is electrically connected with the flow passage alternate valve.

The beneficial effects of the invention are as follows: the filter element is in a stretching and tightening state in the filtering working state by the relative movement between the upper and lower fixing plates, the surface of the membrane wire is smoother and more stable in the stretching and tightening state, and the tightening state is beneficial to improving the impurity separation effect of the membrane wire; the membrane filaments in a loose state are in a cleaning process, and the membrane filaments in the loose state are better suitable for pressure and force field changes in a backwashing process, so that membrane filament breakage caused by too high tension is reduced, and the cleaning of the membrane filaments is enhanced; the tensile tension of the filter element is reduced in a natural state, the continuous tensile tension is reduced, the elastic fatigue of the membrane filaments is caused, and the service life of the membrane filaments is prolonged; the equipment presses the membrane wire through the outward expansion of the outer arc plate and the inward contraction of the inner arc plate in the cleaning state and the relative expansion and contraction between the ball head support rod and the ring head support rod, so that the membrane wire is prevented from generating too strong vibration when being cleaned in a loose state, and the risk of membrane wire breakage is reduced; the membrane wires are further expanded and relaxed by the spiral filter element and the rotation of the upper and lower fixing plates and the supporting rings, and the membrane wires and the outer arc plates and the inner arc plates, the membrane wires and the ball head support rods and the ring head support rods relatively move, so that the peeling of impurities on the surface of the membrane wires is facilitated; through backwash pump, three-way pipe and runner alternate valve's alternate pump water, the fixed plate of upper and lower both sides all can drive the membrane silk, takes place relative displacement friction with outer arc and interior arc, bulb branch and ring head branch between, helps improving the clearance efficiency of membrane silk surface impurity.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a perspective cross-sectional view of the interior of the cartridge of the present invention;

FIG. 3 is a schematic perspective view of the fixing plate and the filter element of the present invention;

FIG. 4 is a schematic perspective view of an inner expanding assembly of a containing cylinder according to the present invention;

FIG. 5 is a schematic view of the mating relationship of the containment drum, slip ring holder and support ring of the present invention;

FIG. 6 is a perspective sectional view of the sewage pipe fitting of the present invention;

FIG. 7 is a schematic perspective view of a portion of the expansion assembly of the present invention;

FIG. 8 is a schematic perspective view of a support ring and an extender of the present invention;

fig. 9 is a partial exploded view of a three-dimensional structure of the stent of the present invention.

Reference numerals in the figures: 1. the sewage treatment device comprises a fixing frame, 2, a containing cylinder, 21, a water purifying cavity, 22, a sewage cavity, 3, a sealing cover, 4, a water purifying port, 5, a sewage pipe fitting, 51, a first sewage pipe, 52, a second sewage pipe, 53, a spring, 6, a fixing plate, 7, a filtering piece, 8, a sliding ring frame, 81, an arc groove, 82, a limiting block, 83, a scraping plate, 9, an expanding component, 91, a supporting ring, 92, a piston cylinder, 93, a piston rod, 10, an expanding piece, 101, an outer arc plate, 102, an inner arc plate, 103, a ball head supporting rod, 104, a ring head supporting rod, 105, a bump, 11, a backwash pump, 12, a three-way pipe, 13, a flow passage alternate valve, 14 and a controller.

Detailed Description

The above-described aspects are further described below in conjunction with specific embodiments. In the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically.

The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. The electronic device provided by the embodiment of the application is described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

Example 1

An automatic dredging ultrafiltration membrane water treatment device, as shown in figures 1-6, comprises a fixing frame 1, wherein a holding cylinder 2 is fixedly arranged on the fixing frame 1, drinking water/industrial water/wastewater (hereinafter referred to as sewage) to be filtered is held in the holding cylinder 2, sealing covers 3 for forming sealing cavities are fixedly arranged at the upper end and the lower end of the holding cylinder 2, water purifying ports 4 are symmetrically distributed on the two sealing covers 3 and are communicated with an external clean water pipeline for discharging filtered water, a sewage pipe fitting 5 is arranged on the lower sealing cover 3 in a penetrating manner, the sewage pipe fitting 5 is positioned at the central axis of the holding cylinder 2, the sewage pipe fitting 5 is used for pouring sewage into the holding cylinder 2, the diameter of a middle cavity in the holding cylinder 2 is larger than that of cavities at the upper side and the lower side, shoulders are arranged between the middle cavity and the cavities at the upper side and the lower side of the holding cylinder 2, the upper side and the lower side in the holding cylinder 2 are respectively and slidably connected with a fixed plate 6, the two fixed plates 6 are symmetrically distributed, the sliding range of the fixed plates 6 is between the sealing cover 3 and the corresponding shoulder on the holding cylinder 2, the two sealing covers 3 symmetrically distributed and the two fixed plates 6 symmetrically distributed are matched to form two water purifying cavities 21 and a sewage cavity 22 which are vertically and symmetrically distributed, the two water purifying ports 4 symmetrically distributed are respectively communicated with the two water purifying cavities 21 symmetrically distributed, the sewage pipe fitting 5 is communicated with the sewage cavity 22, sewage is poured into the sewage cavity 22 through the sewage pipe fitting 5, a filter element 7 for filtering the sewage is fixedly connected between the two fixed plates 6 symmetrically distributed, the filter element 7 consists of four groups of film wires which are circumferentially and equally spaced, gaps are respectively arranged between every two adjacent groups of film wires, each group of membrane wires are in a spiral shape between two symmetrically distributed fixed plates 6, when the two symmetrically distributed fixed plates 6 relatively move, the spiral membrane wires expand or contract outwards, sliding rings 8 are respectively connected to the upper side and the lower side in a sewage cavity 22 in a sliding mode, each sliding ring 8 consists of a circular ring and four supporting blocks, the supporting blocks on each sliding ring 8 are respectively located in gaps between two adjacent groups of membrane wires, an expanding and supporting assembly 9 is arranged between the two symmetrically distributed sliding rings 8, expansion and limiting are carried out on a filtering piece 7 by expanding and supporting the expanding and supporting assembly 9 when the two symmetrically distributed fixed plates 6 relatively move, excessive vibration of the filtering piece 7 is avoided, a backwashing pump 11 for providing power for reversely cleaning the filtering piece 7 is mounted on the outer side of a holding cylinder 2, a three-way pipe 12 is communicated between the backwashing pump 11 and the two symmetrically distributed sealing covers 3, the three-way pipe 12 is used for pumping up and down symmetrically distributed two water purifying cavities 21, a controller 14 is fixedly mounted on the fixing frame 1, and the controller 14 is electrically connected with the backwashing pump 11.

As shown in fig. 2, 5 and 6, the sewage pipe 5 includes a first sewage pipe 51, the circumferential pipe wall of the first sewage pipe 51 is provided with horizontally and longitudinally staggered water outlets, the first sewage pipe 51 penetrates and is slidingly connected with the lower sealing cover 3, the water outlet of the first sewage pipe 51 is communicated with the sewage cavity 22, the first sewage pipe 51 penetrates and is fixedly connected with the lower fixing plate 6, the first sewage pipe 51 is limited and slidingly connected with a second sewage pipe 52, the upper end of the second sewage pipe 52 is fixedly connected with the upper fixing plate 6, the circumferential pipe wall of the second sewage pipe 52 is also provided with horizontally and longitudinally staggered water outlets, the water outlet of the second sewage pipe 52 is communicated with the sewage cavity 22, the lower fixing plate 6 is relatively displaced with the upper fixing plate 6 through the first sewage pipe 51 and the second sewage pipe 52, a spring 53 is fixedly connected between the first sewage pipe 51 and the second sewage pipe 52, and the spring 53 is used for supporting the first sewage pipe 51 and the second sewage pipe 52 so as to keep the relative positions of the upper fixing plate 6 and the lower fixing plate 6.

As shown in fig. 5, 7 and 8, the expanding and supporting assembly 9 includes two supporting rings 91 symmetrically distributed up and down, a groove is provided in the middle of the supporting ring 91 on the upper side, the supporting block of the sliding ring frame 8 on the upper side is slidingly connected at the groove of the supporting ring 91 on the upper side, the supporting ring 91 on the lower side is fixedly connected with the sliding ring frame 8 on the lower side, an expanding piece 10 for engaging and supporting the filter 7 is provided between the supporting rings 91 symmetrically distributed, so the supporting ring 91 on the lower side moves along with the sliding ring frame 8 on the lower side, the supporting ring 91 on the upper side moves along with the supporting ring 91 on the lower side under the driving of the expanding piece 10, a piston cylinder 92 symmetrically distributed is fixedly connected with the fixing plate 6, the piston cylinder 92 penetrates through the adjacent fixing plate 6 and is communicated with the adjacent water purifying cavity 21 and the sewage cavity 22, a piston rod 93 is slidingly connected with the piston cylinder 92, when a pressure difference exists between the water purifying cavity 21 adjacent to the piston cylinder 92 and the sewage cavity 22, the piston rod 93 on the lower side is displaced in the piston cylinder 92, the end of the lower side is located on the corresponding supporting ring 91 on the piston cylinder 92 and the upper side is located on the opposite side to the piston rod 93 on the lower side, and the piston rod 93 is located on the opposite side of the piston rod 92.

As shown in fig. 4, fig. 8 and fig. 9, the expansion element 10 includes an outer arc plate 101 and an inner arc plate 102 which are circumferentially equidistantly distributed, the outer arc plate 101 and the inner arc plate 102 are both elastic plates, the outer arc plate 101 which is circumferentially distributed is compressed and expanded outwards, the inner arc plate 102 which is circumferentially distributed is compressed and folded towards the center, the upper end and the lower end of the outer arc plate 101 and the lower end of the inner arc plate 102 are respectively and fixedly connected with adjacent supporting rings 91, the outer arc plate 101 and the inner arc plate 102 form a jujube-shaped structure together, and the supporting rings 91 on the upper side and the lower side of the outer arc plate 101 and the inner arc plate 102 are matched to form a stable supporting structure.

As shown in fig. 8 and 9, two circumferential sides of the outer arc plate 101 and the inner arc plate 102 are fixedly connected with a row of ball head struts 103 and a row of ring head struts 104 which are distributed at equal intervals respectively, the adjacent ball head struts 103 and ring head struts 104 are distributed in a crossed manner, the ball head struts 103 are elastic arc rods matched with the ball heads, the ring head struts 104 are elastic arc rods matched with limiting rings, the elastic arc rods of the adjacent ball head struts 103 are inserted into the limiting rings of the adjacent ring head struts 104, the concave surfaces and the convex surfaces of the outer arc plate 101 and the inner arc plate 102 are fixedly connected with a plurality of convex blocks 105 which are distributed at equal intervals, and the convex blocks 105 are used for increasing the contact area between the outer arc plate 101 and the inner arc plate 102 and the membrane wires and improving the cleaning efficiency when the outer arc plate 101 and the inner arc plate 102 move relative to the membrane wires.

When the sewage is subjected to ultrafiltration treatment by the device, pressurized sewage enters the sewage cavity 22 of the holding cylinder 2 through the sewage pipe fitting 5, the sewage flows through the filtering piece 7 under the action of water pressure, filtered impurities are attached to the outer side of the filtering piece 7, the sewage is changed into purified water which respectively enters the water purifying cavities 21 on the upper side and the lower side, and the filtered purified water is moved out of the holding cylinder 2 through the water purifying port 4.

In the process of injecting sewage, the pressure in the sewage cavity 22 is greater than the pressure in the water purifying cavity 21, so that a pressure difference environment of filtering the sewage by the filtering piece 7 is formed, the upper and lower fixing plates 6 are respectively positioned at the uppermost side and the lowermost side of the sliding section, the distance between the two fixing plates 6 is the largest, the first sewage pipe 51 and the second sewage pipe 52 are in an extending state, the spring 53 is in a compressing state, the filtering piece 7 between the upper and lower fixing plates 6 is in a stretching and tightening state, the surface of the membrane wire is more flat and stable in the stretching and tightening state, and the tightening state is helpful for improving the separation effect of the membrane wire on impurities, and reducing the membrane pollution and flux reduction caused by the loosening of the membrane wire.

When the device is stopped, the injection of the pressurized sewage into the sewage pipe fitting 5 is stopped, at the moment, the spring 53 is reset to a natural state, the fixing plates 6 at the upper side and the lower side are pushed to reset through the first sewage pipe 51 and the second sewage pipe 52, the tensile tension applied to the filter element 7 is reduced, the continuous tension is reduced, the elastic fatigue of the membrane wire is caused, and the service life of the membrane wire is prolonged.

After the equipment filters the work for a period of time, need clear up the impurity on membrane silk surface through the backwash, the backwash in-process stops to pour into pressurized sewage into sewage pipe fitting 5, this moment controller 14 starts backwash pump 11, backwash pump 11 is through the upper and lower water purification intracavity 21 of three-way pipe 12 up and down both sides, the pressure in water purification intracavity 21 is greater than the pressure in the sewage chamber 22 this moment, the water purification is reverse through the membrane silk, clear up the impurity in the membrane silk outside, and the fixed plate 6 of upper and lower both sides is the bottommost and the topside that are located its sliding interval respectively this moment, the distance between two fixed plates 6 is minimum, filter 7 between the fixed plate 6 of upper and lower both sides is in the relaxation state this moment, because the backwash in-process need carry out reverse high-pressure washing to the membrane silk, the pressure and the force field change of the membrane silk of relaxation state adapt to the backwash in-process better, thereby reduce the membrane silk fracture that leads to because of too high tension, in order to strengthen the clearance to the membrane silk.

In the present apparatus in a state where it is not used, the spring 53 is in a natural state, the two fixing plates 6 are respectively located at the middle positions of the sliding ranges thereof, and since the outer arc plate 101 and the inner arc plate 102 are elastic plates, the upper and lower slide ring holders 8 and the support rings 91 are respectively located at the uppermost and lowermost sides of the sliding ranges thereof.

When the device is in a filtering state, the two fixing plates 6 are relatively far away, the filtering piece 7 is further stretched, the fixing plates 6 drive the piston cylinder 92 and the piston rod 93 to move relatively in the process, and the shapes of the outer arc plate 101 and the inner arc plate 102 are not changed because the sliding ring frame 8 and the supporting ring 91 are in the limiting positions of back movement, so that when the membrane wires are further stretched by the two fixing plates 6, the outer arc plate 101 and the inner arc plate 102 support the membrane wires in cooperation with the ball head supporting rod 103 and the ring head supporting rod 104, and the stretching of the membrane wires is facilitated.

When the device is in a backwashing state, the two fixing plates 6 are relatively close, the pressure in the water purifying cavity 21 is larger than the pressure in the sewage cavity 22, and when the fixing plate 6 moves downwards, the fixing plate 6 drives the supporting ring 91 and the sliding ring frame 8 to move downwards through the piston cylinder 92, meanwhile, under the action of the pressure difference between the water purifying cavity 21 and the sewage cavity 22, the piston rod 93 can be further pushed downwards, the piston rod 93 pushes the supporting ring 91 to move downwards, and the supporting ring 91 and the sliding ring frame 8 at the lower side move upwards.

In the process that the upper and lower support rings 91 move close to each other, the outer arc plate 101 between the two support rings 91 expands outwards and the inner arc plate 102 contracts inwards, the outer arc plate 101 drives the ball head support rod 103 and the ring head support rod 104 on the outer arc plate to expand relatively, the inner arc plate 102 drives the ball head support rod 103 and the ring head support rod 104 on the inner arc plate to contract relatively, the membrane wires are in a loose state, slight membrane wire vibration is helpful for relative friction between the membrane wires, stripping of surface impurities of the membrane wires is helpful, if the vibration is too strong, the risk of membrane wire breakage is increased, and therefore the membrane wires are pressed through the outward expansion of the outer arc plate 101 and the inward contraction of the inner arc plate 102, and the relative expansion and contraction between the ball head support rod 103 and the ring head support rod 104 are matched, so that the membrane wires are prevented from generating too strong vibration during cleaning in the loose state, and the risk of membrane wire breakage is reduced.

Example 2

On the basis of embodiment 1, as shown in fig. 5, four arc grooves 81 uniformly distributed in the circumferential direction are formed in the upper side and the lower side of the inside of the holding cylinder 2, the four arc grooves 81 are respectively identical to the inclination direction of the spiral filter element 7, four limiting blocks 82 in limit sliding fit with the four arc grooves 81 are fixedly connected to the circumferential side surfaces of the sliding ring frame 8, when the sliding ring frame 8 slides along the arc grooves 81 through the limiting blocks 82, the supporting blocks of the sliding ring frame 8 do not influence the state of the filter element 7, four scraping plates 83 with equal intervals in the circumferential direction are arranged on the opposite side surfaces of the two sliding ring frames 8, the scraping plates 83 are triangular prisms, and the scraping plates 83 in the shape of triangular prisms are used for bidirectionally moving and cleaning impurities on the inner wall of the sewage chamber 22, and the scraping plates 83 are in contact with the filter element 7 so as to improve the cleaning efficiency of the impurities on the filter element 7.

The membrane wires of the filtering piece 7 are in a clockwise spiral shape (the rotation direction is taken as the top view direction of fig. 1 as an example) from bottom to top, so when the fixing plates 6 on the upper side and the lower side relatively move, the spiral membrane wires gather towards the central shaft of the containing cylinder 2 or are outwards circumferentially expanded, the distance between the sliding ring frames 8 on the upper side and the lower side is minimum when the device is used for filtering, in the process of relative displacement of the two sliding ring frames 8, the sliding ring frame 8 on the upper side rotates anticlockwise along the arc groove 81 under the action of the limiting block 82 (the rotation direction is taken as the top view direction of fig. 1 as an example), and the sliding ring frame 8 on the lower side rotates clockwise along the arc groove 81 under the action of the limiting block 82.

Because the upper side sliding ring frame 8 and the supporting ring 91 are in a sliding connection mode, and the lower side sliding ring frame 8 and the supporting ring 91 are in a fixed connection mode, the lower side sliding ring frame 8 drives the lower side supporting ring 91 to rotate clockwise, the lower side supporting ring 91 simultaneously drives the upper side supporting ring 91 to rotate through the outer arc plate 101 and the inner arc plate 102, the lower side supporting ring 91 drives the lower side fixing plate 6 to rotate clockwise through the piston cylinder 92 and the piston rod 93 on the lower side supporting ring 91, the upper side piston rod 93 is in contact with the supporting ring 91, the upper side fixing plate 6 does not rotate, the upper side fixing plate 6 and the lower side fixing plate 6 rotate clockwise relatively, membrane wires are further expanded and relaxed, and the membrane wires and the outer arc plate 101 and the inner arc plate 102, the membrane wires and the ball head supporting rod 103 and the ring head supporting rod 104 are relatively moved, so that the membrane wires and the outer surface of the membrane wires are peeled off, and the inner wall 83 of the scraping plate 8 are driven to clean the inner wall 83 in the sliding process.

Example 3

On the basis of embodiment 2, as shown in fig. 1, the three-way valve further comprises a flow passage alternate valve 13 electrically connected with the controller 14, wherein the flow passage alternate valve 13 is fixedly arranged at the three-way junction of the three-way pipe 12, and the flow passage alternate valve 13 is used for controlling the state that the three-way pipe 12 is completely opened for circulation or alternately circulated.

In the back washing process of the device, under the action of the runner alternating valve 13, the back washing pump 11 pumps clean water into the water purifying cavities 21 on the upper side and the lower side alternately through the three-way pipe 12, taking the case of pumping clean water into the water purifying cavity 21 on the upper side, the pressure of the water purifying cavity 21 on the upper side is increased, the fixing plate 6, the sliding ring frame 8 and the supporting ring 91 repeat the downward moving process, the fixing plate 6 on the upper side pushes the second sewage pipe 52 downwards, the spring 53 is stretched, the second sewage pipe 52 pulls the first sewage pipe 51 downwards through the spring 53, and the fixing plate 6 on the lower side is pushed downwards by the first sewage pipe 51 due to the small pressure in the water purifying cavity 21 on the lower side.

Similarly, when the runner alternating valve 13 switches the runner to pump water into the water purifying cavity 21 at the lower side, the lower fixing plate 6, the sliding ring frame 8 and the supporting ring 91 move upwards, the upper fixing plate 6 is pushed upwards by the second sewage pipe 52, and the water purifying cavities 21 at the upper side and the lower side are respectively injected with water, wherein the lower sliding ring frame 8 and the supporting ring 91 rotate together when moving upwards, the spiral membrane wires repeat the expansion and relaxation processes, and the supporting ring 91 does not rotate when the upper sliding ring frame 8 and the supporting ring 91 move downwards, so that the membrane wires do not rotate correspondingly, but the upper fixing plate 6 and the lower fixing plate 6 drive the membrane wires to generate relative displacement friction with the outer arc plate 101, the inner arc plate 102, the ball head supporting rod 103 and the ring head supporting rod 104 in the water purifying process of the upper and lower side water purifying cavity 21, thereby being beneficial to improving the cleaning efficiency of impurities on the outer surface of the membrane wires.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

Claims (10)

1. The utility model provides an automatic mediation formula milipore filter water treatment facilities, includes mount (1), mount (1) fixed mounting has holds section of thick bamboo (2), the both ends that hold section of thick bamboo (2) are all fixed mounting has sealed lid (3), sealed lid (3) are provided with clean mouth of a river (4), downside sealed lid (3) run through and are provided with sewage pipe fitting (5), characterized by: the water treatment device is characterized by further comprising symmetrically distributed fixing plates (6), wherein the symmetrically distributed fixing plates (6) are respectively connected with the upper side and the lower side in the accommodating cylinder (2) in a sliding mode, a sealing cover (3) and symmetrically distributed fixing plates (6) are matched to form a sewage cavity (22) and a water purifying cavity (21) which is vertically and symmetrically distributed, the sewage cavity (22) is located between the upper water purifying cavity (21) and the lower water purifying cavity (21), the sewage pipe (5) is communicated with the sewage cavity (22), a filtering piece (7) is fixedly connected between the symmetrically distributed fixing plates (6) in a fixedly connected mode, a symmetrically distributed sliding ring frame (8) is connected in the sewage cavity (22) in a sliding mode, a spreading and supporting assembly (9) is arranged between the sliding ring frame (8), the spreading and supporting assembly (9) is used for supporting and limiting the filtering piece (7), a pump (11) is installed on the outer side of the accommodating cylinder (2), a backwash pump (11) is communicated with the fixing frame (3), and a backwash controller (14) is fixedly connected with the fixing frame (14).

2. An automatic dredging type ultrafiltration membrane water treatment device according to claim 1, wherein: the sewage pipe fitting (5) is including first sewer pipe (51), first sewer pipe (51) run through and sliding connection in the downside sealed lid (3), first sewer pipe (51) run through and with downside fixed plate (6) fixed connection, first sewer pipe (51) spacing sliding connection has second sewer pipe (52), the upper end of second sewer pipe (52) with upside fixed plate (6) rigid coupling, first sewer pipe (51) with rigid coupling has spring (53) between second sewer pipe (52), first sewer pipe (51) with second sewer pipe (52) all with sewage chamber (22) intercommunication.

3. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 2, wherein: the filter element (7) is composed of a plurality of groups of membrane wires distributed at equal intervals in the circumferential direction, and each group of membrane wires is in a spiral shape between the fixing plates (6) which are distributed symmetrically up and down.

4. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 3, wherein: arc grooves (81) uniformly distributed in the circumferential direction are formed in the upper side and the lower side of the interior of the containing barrel (2), the inclination direction of the arc grooves (81) is the same as that of the filter piece (7), and limiting blocks (82) in limit sliding fit with the corresponding arc grooves (81) are fixedly connected to the sliding ring frame (8).

5. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 4, wherein: the opposite sides of the sliding ring frames (8) which are distributed vertically symmetrically are provided with scraping plates (83) which are distributed circumferentially at equal intervals, and the scraping plates (83) are used for cleaning impurities on the inner wall of the sewage cavity (22).

6. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 5, wherein: the expansion support assembly (9) comprises support rings (91) which are distributed vertically symmetrically, the support rings (91) on the upper side are connected with the corresponding support rings (8) in a sliding mode, the support rings (91) on the lower side are fixedly connected with the corresponding support rings (8), a symmetrically distributed piston cylinder (92) is fixedly connected with a fixing plate (6), the piston cylinder (92) penetrates through the fixing plate (6) and is communicated with a sewage cavity (22) and the corresponding water purifying cavity (21), a piston rod (93) is connected in the piston cylinder (92) in a sliding mode, the end portion, located on the outer side, of the piston cylinder (92) is fixedly connected with the corresponding support ring (91), the end portion, located on the outer side, of the piston rod (93) is matched with the corresponding support ring (91) in a contact mode, of the symmetrically distributed support rings (91) is provided with an expansion piece (10), and the expansion piece (10) is used for being attached to and supporting the filter piece (7).

7. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 6, wherein: the expansion piece (10) comprises an outer arc plate (101) and an inner arc plate (102) which are distributed at equal intervals in the circumferential direction, wherein the two ends of the outer arc plate (101) and the two ends of the inner arc plate (102) are fixedly connected with the adjacent supporting rings (91) respectively, and the outer arc plate (101) and the inner arc plate (102) are elastic plates.

8. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 7, wherein: the outer arc plate (101) and the two circumferential side surfaces of the inner arc plate (102) are fixedly connected with ball head supporting rods (103) and annular head supporting rods (104) which are distributed at equal intervals respectively, and the adjacent ball head supporting rods (103) are in limit sliding fit with the annular head supporting rods (104).

9. An automatic dredging type ultrafiltration membrane water treatment apparatus according to claim 8, wherein: the concave surfaces and the convex surfaces of the outer arc plate (101) and the inner arc plate (102) are fixedly connected with a plurality of convex blocks (105).

10. An automatic dredging type ultrafiltration membrane water treatment device according to claim 1, wherein: the three-way valve is characterized by further comprising a flow passage alternating valve (13), wherein the flow passage alternating valve (13) is fixedly arranged at the three-way junction of the three-way pipe (12), and the controller (14) is electrically connected with the flow passage alternating valve (13).