PVDF (polyvinylidene fluoride) membrane cleaning device for MBR (membrane bioreactor) process

Abstract

The utility model relates to the technical field of MBR (Membrane Bioreactor) membrane cleaning, in particular to an MBR process PVDF (Polyvinylidene Fluoride) membrane cleaning device, which comprises two fixed frames, a fixed frame, a fixed frame, a fixed frame and a fixed frame, each fixing frame is provided with a supporting piece used for containing a pipeline. The pipeline is communicated with the PVDF membrane; the two cleaning mechanisms are arranged on the two sides of the two fixing frames correspondingly; the cleaning mechanism comprises a telescopic mechanism fixed on the fixed frame; the output end of the telescopic mechanism is a lifting plate; a guide rail is fixed on the lifting plate; the nozzle I is fixed in the middle of the guide rail; the plurality of nozzles II are mounted on the guide rail in a sliding manner; the nozzle I is communicated with the plurality of nozzles II through hoses; the cleaning mechanism further comprises an adjusting mechanism used for adjusting the positions of the second nozzles. The device is simple in structure, after the PVDF membrane is hung, the PVDF membrane can be automatically washed, most impurities on the surface of the PVDF membrane can be removed, and the cleaning efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of MBR membrane cleaning, particularly relates to a MBR process PVDF membrane cleaning device. BACKGROUND

[0002] Membrane fouling and membrane aging problems inevitably occur in the long-term operation of the membrane bioreactor (MBR) process PVDF membrane, resulting in the decline of membrane mechanical properties and permeability, and affecting the effluent quality and water production. Therefore, regular chemical cleaning of ultrafiltration membranes is crucial for restoring membrane flux and prolonging the service life of the membrane.

[0003] During the cleaning of the PVDF membrane, a large amount of impurities is attached to the surface of the membrane, so it is necessary to first flush the membrane, and then perform more detailed cleaning after most of the impurities are removed. In the prior art, the membrane is cleaned by manually holding a spray head, which has the disadvantages of long time consumption and high labor intensity. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a MBR process PVDF membrane cleaning device, which has a simple structure and can automatically flush the PVDF membrane after being hung up, remove most of the impurities on the surface, and improve the cleaning efficiency.

[0005] The MBR process PVDF membrane cleaning device of the utility model comprises:

[0006] Two fixed frames are symmetrically arranged and used for bearing other components; each fixed frame is provided with a support for placing a pipeline; the pipeline is in communication with the PVDF membrane;

[0007] Two cleaning mechanisms are arranged on the two sides of the two fixed frames, respectively;

[0008] The cleaning mechanism comprises:

[0009] A telescopic mechanism is fixed to the fixed frame; the output end of the telescopic mechanism is a lifting plate; the lifting plate is fixed with a guide rail;

[0010] A first spray head is fixed to the middle part of the guide rail;

[0011] A plurality of second spray heads are slidingly installed on the guide rail; the first spray head and the plurality of second spray heads are in communication through a hose;

[0012] The cleaning mechanism further comprises:

[0013] An adjusting mechanism is used for adjusting the positions of the plurality of second spray heads.

[0014] As a preferred scheme of the utility model, the first spray head is fixedly connected with the guide rail through a fixed block; each second spray head is slidingly connected with the guide rail through a sliding block.

[0015] The adjusting mechanism comprises:

[0016] The driving rod one is provided with a connecting shaft fixed in the middle part; the connecting shaft is rotationally connected with the fixed block;

[0017] Two connecting rod mechanisms are arranged in a circular array around the connecting shaft;

[0018] The connecting rod mechanism comprises:

[0019] A plurality of driving rod twos are rotationally connected at the end parts of adjacent two driving rod twos; the middle part of each driving rod two is rotationally connected with a sliding block; one end of the driving rod two closest to the driving rod one is rotationally connected with one end part of the driving rod one.

[0020] As a preferred scheme of the utility model, the adjusting mechanism further comprises:

[0021] The power assembly is fixed on the lifting plate; the output end of the power assembly is connected with the connecting shaft.

[0022] As a preferred scheme of the utility model, each nozzle two is communicated with a valve.

[0023] As a preferred scheme of the utility model, the telescopic mechanism is a scissor structure.

[0024] As a preferred scheme of the utility model, the fixing frame comprises:

[0025] The base is fixedly connected at the top with one end of the telescopic rod;

[0026] The top plate is fixedly connected with the other end of the telescopic rod;

[0027] The telescopic mechanism is fixed on the top plate.

[0028] As a preferred scheme of the utility model, the supporting piece is slidingly connected with the top plate;

[0029] The top plate is provided with a locking piece for fixing the position of the supporting piece.

[0030] As a preferred scheme of the utility model, the top of the supporting piece is provided with a notch communicated with the side surface, and the inner wall of the notch is in an arc shape.

[0031] The beneficial effects of the utility model compared with prior art are that two fixed frames are vertically placed on the ground, the pipeline and the PVDF film communicated with the pipeline are passed from the idle notch of the fixed frame and the cleaning mechanism, then the two ends of the pipeline are respectively carried on two supporting pieces, at this time, two cleaning mechanisms are respectively located at two sides of the PVDF film, the position of multiple spray heads is adjusted by operating the adjusting mechanism, so that the spray head two can cover the whole PVDF film in width, the output end of the hose is communicated with the output end of the external cleaning agent, the spray head one and the spray head two are moved up and down by operating the telescopic mechanism at the same time when the cleaning agent is sprayed by the spray head one and the spray head two, the sprayed cleaning agent impacts the surface of the PVDF film, and the adhered pollutants are removed, and the angle of the spray head one and the spray head two is all downward, the downward spraying angle makes the cleaning agent more effectively cover the film surface after being sprayed by the action of gravity, the device can automatically flush the PVDF film after the PVDF film is hung, does not need manual cleaning by the spray head, reduces the labor intensity of the operator, and is suitable for different size film assemblies, and is more convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the structural schematic diagram of the utility model;

[0033] Figure 2 It is the structural schematic diagram of the cleaning mechanism;

[0034] Figure 3 It is Figure 2 The partial enlarged view of A part in it;

[0035] Figure 4 It is Figure 2 The rear view of

[0036] Figure 5 It is the explosion plot of the adjusting mechanism, guide rail, fixed block, sliding block, spray head one and spray head two;

[0037] Mark in the drawing: 1, fixed frame; 11, base; 12, telescopic rod; 13, top plate; 2, supporting piece; 3, cleaning mechanism; 31, telescopic mechanism; 32, lifting plate; 33, guide rail; 34, spray head one; 35, spray head two; 36, hose; 37, adjusting mechanism; 371, drive rod one; 372, connecting shaft; 373, drive rod two; 374, power assembly; 38, fixed block; 39, sliding block; 310, valve; 4, locking piece. DETAILED DESCRIPTION

[0038] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below by combining with the drawings of the specification.

[0039] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be practiced without other than the means described here, and those skilled in the art can make similar generalizations without departing from the spirit of the present application, therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] Secondly, the "embodiment" referred to here means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In an embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or alternative to other embodiments.

[0041] Embodiments

[0042] Referring to Figures 1-4 The embodiment provides a kind of MBR process PVDF membrane cleaning device, comprising:

[0043] Two fixed frames 1, symmetrically arranged, for carrying other components;Each fixed frame 1 is provided with support 2 for placing pipeline;Pipeline is communicated with PVDF membrane;

[0044] Two cleaning mechanisms 3 are respectively arranged on the two sides of two fixed frames 1;

[0045] Cleaning mechanism 3 includes:

[0046] Telescopic mechanism 31 is fixed on fixed frame 1;The output end of telescopic mechanism 31 is lifting plate 32;Lifting plate 32 is fixed with guide rail 33, and guide rail 33 is arranged along the length direction of lifting plate 32;

[0047] Nozzle one 34 is fixed in the middle of guide rail 33;

[0048] Multiple nozzle two 35 are slidably installed on guide rail 33;Nozzle one 34 and multiple nozzle two 35 are communicated by hose 36;

[0049] Cleaning mechanism 3 further includes:

[0050] Adjusting mechanism 37 is used to adjust the position of multiple nozzle two 35;

[0051] The specific working process of the device is as follows: the two fixed frames 1 are vertically placed on the ground, the pipeline and the PVDF film communicated with the pipeline pass through the empty position of the cleaning mechanism 3 from the fixed frame 1, and then the two ends of the pipeline are respectively loaded on the two supporting pieces 2, at this time, the two cleaning mechanisms 3 are respectively located on the two sides of the PVDF film; the position of the plurality of nozzles is adjusted by operating the adjusting mechanism 37, so that the nozzle two 35 can cover the entire PVDF film in width; the input end of the hose 36 is communicated with the output end of the external cleaning agent, the nozzle one 34 and the nozzle two 35 are moved up and down by operating the telescopic mechanism 31 while spraying the cleaning agent, the sprayed cleaning agent impacts the surface of the PVDF film, and the attached pollutants are removed, and the angles of the nozzle one 34 and the nozzle two 35 are both downward, the downward spraying angle enables the cleaning agent to more effectively cover the surface of the film after being sprayed by the action of gravity; after the PVDF film is hung, the device can automatically flush the PVDF film, without manual cleaning by holding the nozzle, the labor intensity of the operator is reduced, and the device is suitable for different sizes of membrane assemblies and is more convenient to use.

[0052] As a preferred scheme of the utility model, referring to Figures 2-3 , the nozzle one 34 is fixedly connected with the guide rail 33 through the fixed block 38; each nozzle two 35 is slidably connected with the guide rail 33 through the sliding block 39;

[0053] Referring to Figure 5 , the adjusting mechanism 37 comprises:

[0054] The drive rod one 371 is fixedly connected with the connecting shaft 372 in the middle; the connecting shaft 372 is rotatably connected with the fixed block 38;

[0055] Two connecting rod mechanisms, the two connecting rod mechanisms are arranged in a circular array around the connecting shaft 372;

[0056] The connecting rod mechanism comprises:

[0057] A plurality of drive rod twos 373, the end portions of adjacent two drive rod twos 373 are rotatably connected; the middle portion of each drive rod two 373 is rotatably connected with a sliding block 39; one end of the drive rod two 373 closest to the drive rod one 371 is rotatably connected with one end portion of the drive rod one 371;

[0058] The specific working process of the adjusting mechanism 37 is as follows: when it is necessary to adjust the position of the nozzle two 35, the connecting shaft 372 is rotated, and the connecting shaft 372 drives the drive rod one 371 fixedly connected with the connecting shaft 372 to rotate; for example Figure 5As shown, since the driving rod one 371 is rotationally connected with the driving rod two 373, when the driving rod one 371 rotates, the rotationally connected point of the driving rod one 371 and the driving rod two 373 changes in both horizontal and vertical positions, so that the driving rod two 373 on the slider 392 rotates while the slider 392 moves, further drives the adjacent slider 392 and the nozzle two 35 to move, and since each driving rod two 373 is of the same specification, the distance between the adjacent nozzles two 35 is synchronously increased or decreased; the adjusting mechanism 37 can adjust the positions of the nozzles two 35 equidistantly through the cooperation of the driving rod one 371 and the connecting rod mechanism, and ensures the comprehensiveness and consistency of cleaning coverage.

[0059] If the connecting shaft 372 does not rotate by power, it needs to be manually adjusted by the operator, and since the connecting shaft 372 is inside, it is inconvenient to operate, and as a preferred scheme of the utility model, referring to Figure 3 and Figure 5 , the adjusting mechanism 37 further comprises:

[0060] The power assembly 374 is fixed on the lifting plate 32, the output end of the power assembly 374 is connected with the connecting shaft 372, and the power assembly 374 is a speed reducer motor;

[0061] The power assembly 374 controls the rotation of the connecting shaft 372, improves the convenience and accuracy of adjustment, reduces the complexity and labor intensity of manual operation, ensures the rapid and accurate adjustment of the nozzle position, and further improves the cleaning efficiency and system automation level.

[0062] If the nozzle two 35 is not provided with the valve 310, the cleaning agent that is not directly used to flush the membrane assembly may be wasted, in order to prevent this situation, as a preferred scheme of the utility model, referring to Figure 3 Each nozzle two 35 is communicated with the valve 310, and the valve 310 can be a manual valve or an automatic valve;

[0063] After the positions of the nozzles two 35 are adjusted, according to the density of the nozzles two 35 and whether the nozzles two 35 can flush the membrane assembly, the valve 310 on the excess nozzle two 35 is closed to reduce the waste of the cleaning agent.

[0064] In order to make the longitudinal movement range of the nozzle two 35 larger and have a smaller volume, as a preferred scheme of the utility model, referring to Figure 2 and Figure 4 The telescopic mechanism 31 is a scissor structure;

[0065] The scissor structure not only can provide a larger longitudinal movement range, ensure that the spray head 35 can cover a wider cleaning area, and due to the compact design, the whole device has a smaller volume, saves the space, meanwhile, the scissor structure has good stability and carrying capacity; the scissor structure is prior art, and no more description is made.

[0066] In order to adapt to more size membrane assemblies, as a preferred scheme of the utility model, referring to Figure 1 , the fixing frame 1 comprises:

[0067] The base 11 is fixedly connected with one end of the telescopic rod 12 at the top;

[0068] The top plate 13 is fixedly connected with the other end of the telescopic rod 12;

[0069] The telescopic mechanism 31 is fixed on the top plate 13;

[0070] The specific use process of the fixing frame 1 is as follows: the base 11 is in contact with the supporting surface of the outside, by adjusting the length of the telescopic rod 12, the height of the top plate 13 can be adjusted according to the actual needs, so as to adapt to the installation requirements of membrane assemblies of different heights.

[0071] Since different membrane assemblies have different widths, if the position of the supporting piece 2 is fixed, the membrane assemblies that can be adapted are less, as a preferred scheme of the utility model, referring to Figure 1 , the supporting piece 2 is in sliding connection with the top plate 13;

[0072] The top plate 13 is provided with a locking piece 4 for fixing the position of the supporting piece 2; the locking piece 4 can adopt a bolt handle and the like;

[0073] The sliding of the supporting piece 2 enables the supporting piece 2 to be flexibly adjusted according to membrane assemblies of different widths, by sliding the supporting piece 2 to a suitable position and using the locking piece 4 to fix, it is ensured that the supporting piece 2 can stably carry membrane assemblies of various sizes, this mode greatly improves the adaptability and universality of the device, so that a single cleaning equipment can be applied to MBR process PVDF membranes of various specifications, reduces the demand for special equipment, reduces the cost, and enhances the flexibility and efficiency of operation.

[0074] As a preferred scheme of the utility model, referring to Figure 1 , a notch in communication with the side surface is formed in the top of the supporting piece 2, and the inner wall of the notch is in arc shape;

[0075] The pipeline is placed in the notch, and the arc-shaped inner wall of the notch can better fit the shape of the circular pipeline, provide more stable support, and prevent the pipeline from shaking or displacing during the cleaning process.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A MBR process PVDF membrane cleaning device, characterized in that, The utility model relates to a kind of PVDF membrane cleaning device, including: Two fixed racks (1) are symmetrically arranged to support other components;Each of the fixed rack (1) is provided with a support (2) for placing the pipeline;The pipeline is communicated with PVDF membrane; Two cleaning mechanisms (3) are respectively arranged on both sides of the two fixed racks (1); The cleaning mechanism (3) includes: A telescopic mechanism (31) is fixed to the fixed rack (1);The output end of the telescopic mechanism (31) is a lifting plate (32);The lifting plate (32) is fixed with a guide rail (33); A spray head (34) is fixed in the middle of the guide rail (33); A plurality of spray heads (35) are slidably mounted on the guide rail (33);The spray head (34) and the plurality of spray heads (35) are communicated by a hose (36); The cleaning mechanism (3) further includes: An adjusting mechanism (37) is used to adjust the position of the plurality of spray heads (35).

2. The MBR process PVDF membrane cleaning device of claim 1, wherein, The spray head (34) is fixedly connected with the guide rail (33) by a fixed block (38);Each of the spray heads (35) is slidably connected with the guide rail (33) by a sliding block (39); The adjusting mechanism (37) includes: A drive rod (371) has a connecting shaft (372) fixed in the middle;The connecting shaft (372) is rotatably connected with the fixed block (38); Two connecting rod mechanisms are arranged in a circular array around the connecting shaft (372); The connecting rod mechanism includes: A plurality of drive rods (373) are rotatably connected at their ends;The middle of each drive rod (373) is rotatably connected with a sliding block (39);One end of the drive rod (373) closest to the drive rod (371) is rotatably connected with one end of the drive rod (371).

3. The MBR process PVDF membrane cleaning device of claim 2, wherein, The adjusting mechanism (37) further includes: A power assembly (374) is fixed to the lifting plate (32);The output end of the power assembly (374) is connected with the connecting shaft (372).

4. The MBR process PVDF membrane cleaning device of claim 1, wherein, Each of the spray heads (35) is communicated with a valve (310).

5. The MBR process PVDF membrane cleaning device of claim 1, wherein, The telescopic mechanism (31) is a scissor structure.

6. The MBR process PVDF membrane cleaning device of claim 1, wherein, The fixed rack (1) includes: A base (11) has one end of a telescopic rod (12) fixedly connected at the top; A top plate (13) is fixedly connected with the other end of the telescopic rod (12); The telescopic mechanism (31) is fixed to the top plate (13).

7. The MBR process PVDF membrane cleaning device of claim 6, wherein, The support (2) is slidably connected with the top plate. The top plate is provided with a locking member (4) for fixing the position of the support (2).

8. The MBR process PVDF membrane cleaning device of claim 7, wherein, The top of the support (2) is provided with a notch communicated with the side surface, and the inner wall of the notch is arc-shaped.

Images