Membrane filtration recovery device

Abstract

The utility model discloses a membrane filtration recovery device which comprises a barrel and a recovery box, filter membranes are arranged in the barrel, liquid to be treated is recovered by the recovery box after passing through the filter membranes, a second rotating plate coaxially and rotatably connected with the barrel is arranged at the bottom of the barrel, the filter membranes are cylindrical, and the plurality of filter membranes are fixedly mounted on the second rotating plate. The bottom of the rotating plate is provided with a collecting tank, the rotating plate is provided with a circulating hole for communicating the internal space of the filtering membrane with the interior of the collecting tank, the recycling box is communicated with the collecting tank through a middle pipe, and the middle pipe is provided with a backwashing pipe. The backwashing pipe can be used for backwashing the filtering membrane, so that the blockage of the filtering membrane is reduced, the filtering efficiency of the filtering membrane is kept, the filtering membrane can rotate and move relative to the barrel, impurities enriched on the outer surface of the filtering membrane are dispersed, and the filtering efficiency is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter separation technical field especially relates to a membrane filtration recovery device. BACKGROUND

[0002] Membrane filtration technology utilizes membrane as separation medium, when solution or mixed gas contacts membrane, under the action of pressure, electric field or temperature difference, some substances can permeate membrane, and other substances are selectively intercepted, thereby realizing the separation of different components in solution or different components of mixed gas. In the membrane filtration process, since the filter membrane intercepts large particle substances, a large amount of large particle substances and other impurities such as suspended matter, colloid, organic matter, microorganism and the like are accumulated on the surface of the filter membrane, these substances can block the membrane holes, reduce the membrane filtration flow, and cause the filtration efficiency of the membrane to decrease. SUMMARY

[0003] The utility model discloses a membrane filtration recovery device for the situation that impurities are accumulated on the surface of the filter membrane and block the membrane holes in the prior art, the filter membrane is backwashed through the setting of the backwashing pipe, and the filter membrane moving function is simultaneously set, so that the accumulation and enrichment of impurities on the surface of the filter membrane are reduced.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme:

[0005] A membrane filtration recovery device, comprising a cylinder body and a recovery tank, the inside of the cylinder body is provided with a filter membrane, the liquid to be treated is recovered by the recovery tank after passing through the filter membrane, the cylinder body is provided with a first pipe body for liquid inlet and a third pipe body for liquid outlet, the bottom of the cylinder body is provided with a second rotating plate coaxially arranged with the cylinder body, the filter membrane is cylindrical, a plurality of filter membranes are fixedly installed on the second rotating plate, the bottom of the rotating plate is provided with a collecting groove, the rotating plate is provided with flow-through holes for connecting the inside space of the filter membrane and the inside of the collecting groove, the recovery tank is communicated with the collecting groove through an intermediate pipe, the communication path between the intermediate pipe and the collecting groove is provided with a first valve, the communication path between the intermediate pipe and the collecting groove is provided with a backwashing pipe, and the backwashing pipe is provided with a second valve.

[0006] Preferably, the top of the cylinder body is provided with a first rotating plate coaxially arranged with the cylinder body, the first rotating plate is connected with the second rotating plate through a connecting rod, the connecting rod is coaxially arranged with the cylinder body, and the first rotating plate and the second rotating plate are respectively rotationally connected with the cylinder body. The upper part of the filter membrane is connected to the first rotating plate, and the lower part of the filter membrane is connected to the second rotating plate.

[0007] Preferably, the first rotating plate and the second rotating plate are provided with a first supporting cylinder and a second supporting cylinder, the filter membrane is located between the first supporting cylinder and the second supporting cylinder, and the filter membrane, the first supporting cylinder and the second supporting cylinder are coaxially arranged.

[0008] The bottom of the collecting groove is fixedly provided with a sleeve, the middle pipe is in communication with the sleeve and is rotationally connected to the sleeve, and the middle pipe is fixedly connected to the recovery tank.

[0009] Preferably, a plurality of blades are arranged on the connecting rod, and the blades are uniformly arranged in a ring on the connecting rod.

[0010] Preferably, a second pipe body for liquid outlet is arranged on the cylinder.

[0011] Preferably, the membrane filtration and recovery device further comprises a base, the cylinder is fixedly connected to the base, an upper portion of the base is provided with a support, and the support is provided with a motor for driving the first rotating plate to rotate.

[0012] The membrane filtration and recovery device has the following beneficial effects:

[0013] 1. The membrane filtration and recovery device is used for recovering the filtered liquid after membrane filtration, a backwashing pipe is arranged on the middle pipe connected to the recovery tank, the backwashing pipe guides liquid in the filter membrane, the filter membrane can be backwashed, the blockage of the filter membrane is reduced, and the filtration efficiency of the filter membrane is maintained.

[0014] 2. The filter membrane of the membrane filtration and recovery device is arranged between the first rotating plate and the second rotating plate, the filter membrane can rotate and move relative to the cylinder, the impurities enriched on the outer surface of the filter membrane are dispersed, and the filtration efficiency is maintained; meanwhile, rotatable blades are arranged between the first rotating plate and the second rotating plate, the blades can agitate the liquid to be treated, and the dispersion of the impurities on the outer surface of the filter membrane is strengthened. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural schematic view of the membrane filtration and recovery device;

[0016] Figure 2 FIG. 2 is a structural schematic view of the membrane filtration and recovery device in the A-A section;

[0017] Figure 3 FIG. 3 is a structural schematic view of the membrane filtration and recovery device in the middle pipe from a bottom view;

[0018] Figure 4 FIG. 4 is a liquid flow schematic view of the membrane filtration and recovery device during filtration;

[0019] Figure 5 FIG. 5 is a liquid flow schematic view of the membrane filtration and recovery device during backwashing.

[0020] In the drawings: 1, cylinder; 2, connecting rod; 3, recovery tank; 4, first rotating plate; 5, second rotating plate; 6, collecting groove; 7, filter membrane; 8, middle pipe; 9, backwashing pipe; 10, first pipe body; 11, second pipe body; 12, third pipe body; 13, base; 14, support; 15, motor;

[0021] 21 blade; 51 flow-through hole; 61 sleeve; 71 first support cylinder; 72 second support cylinder; 81 first valve; 91 second valve; 81 first valve; 91 second valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] With reference to Figure 1 A membrane filtration recovery device comprises a cylinder body 1 and a recovery tank 3. The inside of the cylinder body 1 is provided with a filter membrane 7. The liquid to be treated is recovered by the recovery tank 3 after passing through the filter membrane 7.

[0024] Specifically, the top of the cylinder body 1 is provided with a first rotating plate 4, and the bottom of the cylinder body 1 is provided with a second rotating plate 5. The first rotating plate 4 is connected with the second rotating plate 5 through a connecting rod 2. The connecting rod 2, the first rotating plate 4 and the second rotating plate 5 are coaxially arranged with the cylinder body 1. The first rotating plate 4 and the second rotating plate 5 are rotatably connected with the cylinder body 1. A sealing ring is arranged at the rotating sealing position of the first rotating plate 4 and the cylinder body 1, so as to form the rotating sealing connection between the first rotating plate 4 and the cylinder body 1. Similarly, a sealing ring is arranged between the second rotating plate 5 and the cylinder body 1, so as to form the rotating sealing connection between the second rotating plate 5 and the cylinder body 1.

[0025] The membrane filtration recovery device further comprises a base 13. The cylinder body 1 is fixedly connected with the base 13. The upper part of the base 13 is provided with a support 14. A motor 15 is arranged on the support 14. The output shaft of the motor 15 is connected with the rotation center of the first rotating plate 4. The motor 15 is used to drive the first rotating plate 4 to rotate, so as to form the rotating action of the first rotating plate 4, the connecting rod 2 and the second rotating plate 5 relative to the cylinder body 1.

[0026] With reference to Figure 2 The first rotating plate 4 and the second rotating plate 5 are provided with a first support cylinder 71 and a second support cylinder 72. The filter membrane 7 is also in a cylindrical shape. The filter membrane 7 is located between the first support cylinder 71 and the second support cylinder 72. The filter membrane 7, the first support cylinder 71 and the second support cylinder 72 are coaxially arranged. A plurality of through holes or mesh holes are arranged on the first support cylinder 71 and the second support cylinder 72, which are used for the flow of liquid. Part of the filter membrane 7 is bonded to the first support cylinder 71 and the second support cylinder 72, which does not affect the filtering efficiency of the filter membrane 7. The first support cylinder 71 and the second support cylinder 72 are used to support the filter membrane 7 from the outside and the inside of the filter membrane 7 respectively. The upper part of the filter membrane 7 is connected with the first rotating plate 4, and the lower part of the filter membrane 7 is connected with the second rotating plate 5.

[0027] With reference to Figure 1The bottom of the second rotating plate 5 is provided with a collecting groove 6, and the second rotating plate 5 is provided with flow-through holes 51 corresponding in position and number to the positions and number of the filter membranes 7, the flow-through holes 51 being used to connect the internal space of the filter membranes 7 with the interior of the collecting groove 6. Figure 1 and Figure 3 The recovery tank 3 is connected to the collecting groove 6 through an intermediate pipe 8, the bottom of the collecting groove 6 is fixedly provided with a sleeve 61, the intermediate pipe 8 is connected to the sleeve 61 in a rotatable manner, and the intermediate pipe 8 is fixedly connected to the recovery tank 3.

[0028] The cylinder 1 is provided with a first pipe 10 for liquid inlet and a third pipe 12 for liquid outlet, the first pipe 10 is located at the upper part of the cylinder 1, and the third pipe 12 is located at the lower part of the cylinder 1. Figure 4 When the membrane filter recovery device is in operation, the liquid to be treated enters the cylinder 1 from the first pipe 10, passes through the filter membranes 7, and then enters the collecting groove 6 from the flow-through holes 51, and then enters the recovery tank 3 from the intermediate pipe 8 to be recovered, and the original liquid exits from the third pipe 12. In this embodiment, the filter membranes 7 can rotate with the first rotating plate 4 and the second rotating plate 5, and relative rotation is formed between the filter membranes 7 and the original liquid, so that the impurities enriched on the outer surface of the filter membranes 7 are dispersed, and the filtering efficiency of the filter membranes 7 is maintained.

[0029] Reference Figure 1 and Figure 2 In this embodiment, the connecting rod 2 is provided with a plurality of blades 21, the blades 21 are uniformly arranged in a ring on the connecting rod 2, and when the first rotating plate 4 and the second rotating plate 5 rotate, the blades 21 on the connecting rod 2 rotate, and the blades 21 can agitate the original liquid, so that the dispersion of impurities on the outer surface of the filter membranes 7 is enhanced.

[0030] Reference Figure 1 and Figure 3 A first valve 81 is arranged on the connecting path between the intermediate pipe 8 and the collecting groove 6, a backwashing pipe 9 is arranged on the connecting path between the intermediate pipe 8 and the collecting groove 6, and a second valve 91 is arranged on the backwashing pipe 9. The backwashing pipe 9 is used for the backwashing water to enter the cylinder 1, for backwashing of the filter membranes 7, for reducing the blockage of the filter membranes 7, and for maintaining the filtering efficiency of the filter membranes 7.

[0031] In this embodiment, the cylinder 1 is provided with a second pipe 11 for liquid outlet, the second pipe 11 is used for the backwashing water to exit. The second pipe 11 and the first pipe 10 are connected to one connecting hole of the cylinder 1 through a Y-shaped pipe. The first pipe 10 is provided with a third valve, the second pipe 11 is provided with a fourth valve, and the third pipe 12 is provided with a fifth valve.

[0032] Reference Figure 4When the membrane filtration recovery device is filtering, the second valve 91 of the backwash pipe 9 is closed, the fourth valve of the second pipe body 11 is closed, the first valve 81 of the intermediate pipe 8 is opened, the third valve of the first pipe body 10 and the fifth valve of the third pipe body 12 are closed. The liquid to be treated enters the cylinder 1 from the first pipe body 10, passes through the filter membrane 7, and then enters the collection tank 6 from the flow-through hole 51, and then enters the recovery tank 3 from the intermediate pipe 8 to be recovered, and the original liquid is discharged from the third pipe body 12.

[0033] Reference Figure 5 When the membrane filtration recovery device is backwashing, the second valve 91 of the backwash pipe 9 is opened, the fourth valve of the second pipe body 11 is opened, the first valve 81 of the intermediate pipe 8 is closed, the third valve of the first pipe body 10 and the fifth valve of the third pipe body 12 are closed. The backwash water enters the intermediate pipe 8 from the backwash pipe 9, and then enters the internal space of the filter membrane 7 from the collection tank 6, passes through the filter membrane 7, and then is discharged from the second pipe body 11, so as to realize backwashing of the filter membrane 7.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A membrane filtration recovery device comprising a cylinder body and a recovery tank, an inside of the cylinder body being provided with a filtration membrane, a liquid to be treated being recovered by the recovery tank after passing through the filtration membrane, a first pipe body for liquid inlet and a third pipe body for liquid outlet being provided on the cylinder body, characterized in that, The bottom of the cylinder is provided with a second rotating plate coaxial with the cylinder, the filter membrane is cylindrical, and a plurality of filter membranes are fixedly installed on the second rotating plate, the bottom of the rotating plate is provided with a collection groove, the rotating plate is provided with a flow-through hole for connecting the internal space of the filter membrane and the inside of the collection groove, the recovery tank is communicated with the collection groove through an intermediate pipe, a first valve is arranged on the communication path between the intermediate pipe and the collection groove, a backwashing pipe is arranged on the communication path between the intermediate pipe and the collection groove, and a second valve is arranged on the backwashing pipe.

2. The membrane filtration recovery apparatus of claim 1, wherein, The top of the cylinder is provided with a first rotating plate coaxial with the cylinder, the first rotating plate is connected with the second rotating plate through a connecting rod, the connecting rod is coaxial with the cylinder, and the first rotating plate and the second rotating plate are respectively rotationally connected with the cylinder. The upper part of the filter membrane is connected to the first rotating plate, and the lower part of the filter membrane is connected to the second rotating plate.

3. The membrane filtration recovery apparatus of claim 2, wherein, First and second supporting cylinders are arranged between the first and second rotating plates, the filter membrane is located between the first and second supporting cylinders, and the filter membrane, the first supporting cylinder and the second supporting cylinder are coaxial.

4. The membrane filtration recovery apparatus of claim 3, wherein, The bottom of the collection groove is fixedly provided with a sleeve, the intermediate pipe is in communication and rotationally connected with the sleeve, and the intermediate pipe is fixedly connected with the recovery tank.

5. The membrane filtration recovery apparatus of claim 4, wherein, A plurality of blades are arranged on the connecting rod, and the blades are uniformly arranged in a ring on the connecting rod.

6. The membrane filtration recovery apparatus of any one of claims 1-5, wherein, A second pipe body for liquid outlet is arranged on the cylinder.

7. The membrane filtration recovery apparatus of claim 6, wherein, A base is further included, the cylinder is fixedly connected with the base, the upper part of the base is provided with a support, and a motor for driving the first rotating plate to rotate is arranged on the support.

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