CN218047325U

CN218047325U - Membrane filtering device capable of backwashing

Info

Publication number: CN218047325U
Application number: CN202222488518.7U
Authority: CN
Inventors: 杨腊月; 何晓凯; 黄建民; 张彤; 吕群
Original assignee: Hebei Runxiao Biotechnology Co ltd
Current assignee: Hebei Runxiao Biotechnology Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-16
Anticipated expiration: 2032-09-21

Abstract

The utility model discloses a membrane filtering device capable of backwashing, which comprises a tank body, a filter membrane, a water tank, pure water and a suction pump, wherein a backwashing mechanism is arranged in the tank body; the backwashing mechanism comprises an adsorption cover, a rotating part and a driving part, wherein the adsorption cover is connected with the rotating part, the driving part drives the rotating part to rotate, the rotating part drives the adsorption cover to do circular motion, and one of the suction pumps conveys pure water from the lower part of the filter membrane to the upper part of the filter membrane through the rotating part and the adsorption cover; the other suction pump discharges the pure water above the filter membrane to the outside through the adsorption cover and the rotating part. The beneficial effects of the utility model are that, through the work of one of them group back flush mechanism, sustainable with the pure water input to the filter membrane on, through the work of another group back flush mechanism, arrange the external world with the pure water that contains impurity on the filter membrane, avoid impurity to stop on the filter membrane, improve the back flush quality.

Description

Membrane filtering device capable of backwashing

Technical Field

The utility model relates to a back flush membrane filtration technology field, more specifically says, relates to a membrane filtration device that can back flush.

Background

The membrane filtration is a precise separation technology, can realize molecular-level filtration, is a technology for carrying out two-phase separation by utilizing the selective permeability of membrane pores, takes the pressure difference at two sides of the membrane as a driving force to ensure that a solvent, inorganic ions, small molecules and the like permeate the membrane to intercept particles and macromolecules, and is commonly applied to the fields of medicines, biology, food and beverage and paper making;

a conventional backwashing apparatus, for example, a UF ultrafiltration membrane filter apparatus having a backwashing function, which is disclosed in patent No. cn202021837426.X, reference is made to a reference in which impurities on a filter membrane are blown to an upper surface of the filter membrane by a relatively high air pressure, pure water is supplied to the filter membrane, and finally, the pure water is discharged through an upper pipe, and has the following disadvantages: 1. when inputting the pure water, can wash the impurity of filter membrane upper surface in the filter membrane under the effect of gravity once more, discharge the pure water that contains impurity through the mode of natural flow, can not clear away the impurity on the filter membrane completely, can only play the effect of diluting the impurity.

SUMMERY OF THE UTILITY MODEL

To overcome the defects, the utility model provides a membrane filtering device capable of backwashing, which solves the problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a membrane filtering device capable of backwashing comprises a tank body, two filter membranes, an inlet pipe, an outlet pipe, a water tank, pure water and suction pumps, wherein the two suction pumps are arranged;

the backwashing mechanism comprises an adsorption cover, a rotating part and a driving part, wherein the adsorption cover is connected with the rotating part, the driving part drives the rotating part to rotate, the rotating part drives the adsorption cover to do circular motion, and one of the suction pumps conveys pure water from the lower part of the filter membrane to the upper part of the filter membrane through the rotating part and the adsorption cover; and the other suction pump discharges the pure water above the filter membrane to the outside through the adsorption cover and the rotating part, and the suction pump is communicated with the rotating parts on different groups of backwashing mechanisms.

Further, the rotation portion is including installing the hollow tube one at jar side surface, and a hollow tube runs through jar side wall, and the joint is installed to a hollow tube one end, bearing one is installed to a hollow tube other end, and the Z venturi tube is installed to a bearing inner circle, and Z venturi tube lateral wall is opened there is the round hole, and round hole and a hollow tube intercommunication, the adsorption cover is installed in Z venturi tube one end, and the adsorption cover is pressed close to the filter membrane surface.

Further, the cross section of the adsorption cover is in an inverted V shape.

Further, the cross section of the adsorption cover is rectangular.

Further, the driving part comprises a second hollow tube arranged on the side surface of the tank body, the second hollow tube penetrates through the side wall of the tank body, one end of the second hollow tube is open, a second bearing is arranged at the other end of the second hollow tube, the Z-shaped tube is fixedly connected with the inner ring of the second bearing, a driven wheel is arranged at one end of the Z-shaped tube, a motor platform is arranged on the side wall of the tank body, a rotating motor is arranged on the upper surface of the motor platform, a driving wheel is arranged at the rotating end of the rotating motor, and a driving belt is arranged between the driving wheel and the driven wheel.

Furthermore, one of the suction pump inputs is connected to a connection on the lower rotating part, said suction pump input extending into the water tank.

Furthermore, the input end of the other suction pump is connected with a joint on the upper rotating part, and the output end of the suction pump is communicated with the outside.

The utility model has the advantages that: through the work of one group of back flush mechanism, can continue to input pure water to the filter membrane, through the work of another group of back flush mechanism, discharge the pure water that contains the impurity on the filter membrane to the external world, avoid impurity to stop on the filter membrane, improve back flush quality.

Drawings

Fig. 1 is a schematic structural diagram of a membrane filtration device capable of backwashing according to the present invention;

FIG. 2 is a schematic view of a backwash mechanism;

FIG. 3 is a partial schematic view of the rotating portion;

FIG. 4 is a first cross-sectional view of the suction cup;

FIG. 5 is a schematic cross-sectional view II of the adsorption hood;

in the figure, 1, a tank body; 2. filtering the membrane; 3. feeding a pipe; 4. discharging a pipe; 5. a water tank; 6. pure water; 7. a suction pump; 8. an adsorption cover; 9. a rotating part; 10. a drive section; 11. a first hollow pipe; 12. a joint; 13. a first bearing; 14. a Z-shaped pipe; 15. a circular hole; 16. an inverted V shape; 17. a rectangle shape; 18. a hollow pipe II; 19. a second bearing; 20. a driven wheel; 21. a motor platform; 22. a rotating electric machine; 23. a driving wheel; 24. a transmission belt.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

The embodiment of the present application provides a membrane filtration device capable of backwashing, please refer to fig. 1 to 5: the device comprises a tank body 1, filter membranes 2, an inlet pipe 3, an outlet pipe 4, a water tank 5, pure water 6 and suction pumps 7, wherein the number of the suction pumps 7 is two, the filter membranes 2 are positioned at the upper end of the tank body 1, the inlet pipe 3 is positioned at the upper end of the tank body 1, the outlet pipe 4 is positioned at the lower end of the tank body 1, backwashing mechanisms are arranged in the tank body 1, the backwashing mechanisms are symmetrically distributed up and down, the filter membranes 2 are positioned between the two backwashing mechanisms, and the filter membranes 2 are in a horizontal state;

the backwashing mechanism comprises an adsorption cover 8, a rotating part 9 and a driving part 10, wherein the adsorption cover 8 is connected with the rotating part 9, the driving part 10 drives the rotating part 9 to rotate, the rotating part 9 drives the adsorption cover 8 to do circular motion, and one of the suction pumps 7 conveys pure water 6 from the lower part of the filter membrane 2 to the upper part of the filter membrane 2 through the rotating part 9 and the adsorption cover 8; the other suction pump 7 discharges the pure water 6 above the filter membrane 2 to the outside through an adsorption cover 8 and a rotating part 9, and the suction pump 7 is communicated with the rotating part 9 on different sets of backwashing mechanisms.

In practical application, the raw material of sorbitol needs to be filtered by a filter membrane 2 in the production process, can enter a tank body 1 through an inlet pipe 3, is concentrated below the tank body 1 after being filtered by the filter membrane 2, and can be discharged through an outlet pipe 4, so that the purpose of membrane filtration is realized;

after the filter membrane 2 is filtered for a certain time, the filter membrane 2 needs to be subjected to back flushing operation, the membrane flux of the filter membrane 2 is improved, the driving part 10 is controlled to work, the driving part 10 can simultaneously drive the two groups of rotating parts 9 to synchronously rotate, the rotating parts 9 simultaneously control the suction pumps 7 to work, one of the suction pumps 7 conveys pure water 6 into the rotating part 9 below the suction pump, the pure water is discharged from the adsorption cover 8, the pure water 6 moves from the lower part of the filter membrane 2 to the upper part of the filter membrane 2, and the aim of dredging the filter membrane 2 is fulfilled; the other suction pump 7 is operated to generate a negative pressure in the upper rotary part 9, and the upper adsorption cover 8 adsorbs the pure water on the upper surface of the filter membrane 2 into the rotary part 9, and finally discharges the pure water containing impurities to the outside.

Referring to the attached drawing 1, the attached drawing 2 and the attached drawing 3 in the specification, the rotating part 9 comprises a first hollow pipe 11 installed on the side surface of the tank body 1, the first hollow pipe 11 penetrates through the side wall of the tank body 1, a joint 12 is installed at one end of the first hollow pipe 11, a first bearing 13 is installed at the other end of the first hollow pipe 11, a Z-shaped pipe 14 is installed on the inner ring of the first bearing 13, a round hole 15 is formed in the side wall of the Z-shaped pipe 14, the round hole 15 is communicated with the first hollow pipe 11, an adsorption cover 8 is installed at one end of the Z-shaped pipe 14, and the adsorption cover 8 is close to the surface of the filter membrane 2.

In practical application, the driving part 10 is used for driving the Z-shaped pipe 14 and the adsorption cover 8 to rotate, the bearing I13 is used for enabling the Z-shaped pipe 14 to stably rotate, and the circular hole 15 is used for enabling the pure water 6 in the hollow pipe I11 to flow into a cavity of the Z-shaped pipe 14, so that the circulation of the pure water 6 is facilitated;

the flow path of the pure water 6 of the lower rotating part 9 is that one of the suction pumps 7, a lower joint 12, a lower hollow pipe I11, a lower Z-shaped pipe 14 and a lower adsorption cover 8 finally move to the lower part of the adsorption cover 8, and the pure water can permeate from the lower end of the filter membrane 2 to the upper part of the filter membrane 2 by utilizing the pressure of the pure water 6;

the pure water 6 flow path of the upper rotating part 9 is such that the other suction pump 7 generates a negative pressure in the upper adsorption cup 8; the adsorption cover 8, the upper Z-shaped pipe 14, the upper hollow pipe I11, the suction pump 7 and finally the air is discharged to the outside.

Referring to the description of fig. 4, the cross section of the adsorption hood 8 is in an inverted V shape 16.

In particular, in practical applications, the inverted V-shape 16 can increase the coverage of the adsorption hood 8 and the filter membrane 2.

Referring to figure 5 of the specification, the suction cup 8 is rectangular 17 in cross-section.

In practical application, the flow rate of the pure water 6 can be increased by the arrangement of the rectangle 17.

Referring to the attached

drawings

1, 2 and 3 in the specification, the driving portion 10 comprises a second hollow tube 18 installed on the side surface of the tank body 1, the second hollow tube 18 penetrates through the side wall of the tank body 1, one end of the second hollow tube 18 is open, the other end of the second hollow tube 18 is provided with a second bearing 19, a Z-shaped tube 14 is fixedly connected with the inner ring of the second bearing 19, one end of the Z-shaped tube 14 is provided with a driven wheel 20, the side wall of the tank body 1 is provided with a motor platform 21, the upper surface of the motor platform 21 is provided with a rotating motor 22, the rotating end of the rotating motor 22 is provided with a driving wheel 23, and a transmission belt 24 is installed between the driving wheel 23 and the driven wheel 20.

In practical application, the rotating motor 22 is controlled to rotate, the rotating motor 22 drives the two driving wheels 23 to synchronously rotate, the driving wheels 23 drive the driven wheels 20 to rotate through the driving belt 24, the driven wheels 20 drive the Z-shaped tubes 14 to rotate, the Z-shaped tubes 14 drive the adsorption covers 8 to rotate, and the adsorption covers 8 can rotate 360 degrees to sweep the whole surfaces of the filter membranes 8, so that the filter membranes 8 are cleaned;

referring to the attached

drawings

1, 2 and 3 in the specification, the input end of a suction pump 7 is connected with a joint 12 on the lower rotating part 9, and the input end of the suction pump 7 extends into the water tank 5.

In particular, in practice, one of the suction pumps 7 is responsible for delivering pure water 6 under the filter membrane 2.

Referring to the attached

drawings

1, 2 and 3 in the specification, the input end of the other suction pump 7 is connected with a joint 12 on the upper rotating part 9, and the input end of the suction pump 7 is communicated with the outside.

In particular, in practical use, the other suction pump 7 is responsible for discharging the pure water 6 above the filter membrane 2.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A membrane filtering device capable of backwashing comprises a tank body (1), two filter membranes (2), two inlet pipes (3), two outlet pipes (4), a water tank (5), pure water (6) and a suction pump (7), wherein the filter membranes (2) are positioned at the upper end of the tank body (1), the inlet pipes (3) are positioned at the upper end of the tank body (1), and the outlet pipes (4) are positioned at the lower end of the tank body (1), and the membrane filtering device is characterized in that backwashing mechanisms are arranged in the tank body (1), are provided with two groups and are distributed symmetrically up and down, the filter membranes (2) are positioned between the two groups of backwashing mechanisms, and the filter membranes (2) are in a horizontal state;

the backwashing mechanism comprises an adsorption cover (8), a rotating part (9) and a driving part (10), the adsorption cover (8) is connected with the rotating part (9), the driving part (10) drives the rotating part (9) to rotate, the rotating part (9) drives the adsorption cover (8) to do circular motion, and one of the suction pumps (7) conveys pure water (6) from the lower part of the filter membrane (2) to the upper part of the filter membrane (2) through the rotating part (9) and the adsorption cover (8); and the other suction pump (7) discharges the pure water (6) above the filter membrane (2) to the outside through the adsorption cover (8) and the rotating part (9), and the suction pump (7) is communicated with the rotating parts (9) on different groups of backwashing mechanisms.

2. The membrane filtering device capable of backwashing according to claim 1, wherein the rotating portion (9) comprises a first hollow tube (11) installed on the side surface of the tank body (1), the first hollow tube (11) penetrates through the side wall of the tank body (1), a joint (12) is installed at one end of the first hollow tube (11), a first bearing (13) is installed at the other end of the first hollow tube (11), a Z-shaped tube (14) is installed at the inner ring of the first bearing (13), a circular hole (15) is formed in the side wall of the Z-shaped tube (14), the circular hole (15) is communicated with the first hollow tube (11), the adsorption cover (8) is installed at one end of the Z-shaped tube (14), and the adsorption cover (8) is close to the surface of the filter membrane (2).

3. A backwashable membrane filtration device according to claim 2, wherein the adsorption hood (8) is inverted V-shaped (16) in cross-section.

4. A backwashable membrane filtration device according to claim 2, wherein the adsorption hood (8) is rectangular (17) in cross-section.

5. The membrane filtering device capable of back flushing according to claim 3 or 4, wherein the driving portion (10) comprises a second hollow tube (18) installed on the side surface of the tank body (1), the second hollow tube (18) penetrates through the side wall of the tank body (1), one end of the second hollow tube (18) is open, the other end of the second hollow tube (18) is provided with a second bearing (19), the Z-shaped tube (14) is fixedly connected with the inner ring of the second bearing (19), one end of the Z-shaped tube (14) is provided with a driven wheel (20), the side wall of the tank body (1) is provided with a motor platform (21), the upper surface of the motor platform (21) is provided with a rotating motor (22), the rotating end of the rotating motor (22) is provided with a driving wheel (23), and a driving belt (24) is installed between the driving wheel (23) and the driven wheel (20).

6. A backwashable membrane filter unit as claimed in claim 5, wherein a suction pump (7) is connected at its input to the connection (12) on the lower rotor (9), the suction pump (7) extending at its input into the water tank (5).

7. A membrane filtration unit with backwash as claimed in claim 6, wherein the input of a further suction pump (7) is connected to the connection (12) of the upper rotor (9), the output of the suction pump (7) being connected to the outside.