Ultrafiltration device for sewage treatment

Abstract

The utility model provides an ultrafiltration device for sewage treatment, which relates to the technical field of sewage ultrafiltration, and comprises a treatment barrel and an ultrafiltration membrane, an annular seat is arranged in the treatment barrel, a plurality of grid grooves which are distributed in an annular array and are used for installing the ultrafiltration membrane are arranged on the side surface of the annular seat, the centers of two sides of the annular seat are rotatably connected with connecting blocks, and the connecting blocks are connected with the annular seat. The two connecting blocks are symmetrically distributed and rotate at the same speed, the connecting blocks are provided with cleaning tanks which correspond to the grid grooves in shape and are used for separating the ultrafiltration membranes, the water pipes, the connecting blocks, the cleaning tanks and the connecting covers are arranged, one ultrafiltration membrane is covered with the cleaning tanks, and cleaning water is injected into one water pipe, so that the ultrafiltration membranes are cleaned, and the ultrafiltration membranes are cleaned. After the ultrafiltration membrane is reversely washed, water doped with impurities is sprayed out along the other water pipe, and in the washing process, due to the fact that the ultrafiltration membrane is covered with the washing tank, it is guaranteed that untreated sewage in the treatment barrel cannot be discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage ultrafiltration, in particular to an ultrafiltration device for sewage treatment. Background Art

[0002] Wastewater ultrafiltration is a pressurized membrane separation technology, that is, under a certain pressure, small molecular solutes and solvents are allowed to pass through a special membrane with a certain pore size, while large molecular solutes cannot pass through and remain on one side of the membrane, thereby partially purifying the large molecular substances.

[0003] For example, an ultrafiltration device for multi-stage sewage treatment in a sewage station in the prior art has a publication number of CN214855399U. When in use, the sewage is filtered through a filter net and then flows into a treatment chamber. When the sewage flows in the treatment chamber, the magnetic column adsorbs the fine metal impurities in the sewage, and the impurities in the sewage are fully filtered through the ultrafiltration membrane. Multi-stage treatment is achieved through multiple treatment barrels, and a push plate is pushed by an external device to push the piston to move, pressurizing the sewage in the treatment chamber, thereby promoting the sewage to pass through the ultrafiltration membrane. After the sewage treatment is completed, the push plate can be pulled in the opposite direction to allow the impurities to enter the pressurized chamber and be discharged through the sewage pipe.

[0004] However, when the push plate is pulled in the opposite direction and the piston is pulled, the sewage in the treatment barrel that has not been treated by ultrafiltration will also enter the pressurized barrel, causing the sewage pipe to discharge the sewage that has been treated by ultrafiltration when discharging sewage. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes an ultrafiltration device for sewage treatment.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultrafiltration device for sewage treatment, including a treatment barrel and an ultrafiltration membrane, a ring seat is arranged in the treatment barrel, a plurality of grid grooves distributed in a ring array and used to install the ultrafiltration membrane are opened on the side of the ring seat, the centers of both sides of the ring seat are rotatably connected with connecting blocks, the two connecting blocks are symmetrically distributed and rotate at the same speed, a cleaning groove corresponding to the shape of the grid groove and used to separate the ultrafiltration membrane is opened on the connecting block, a first rotating joint is arranged on the cleaning groove, one end of the first rotating joint is connected to a connecting cover, the other side of the connecting cover is connected to a second rotating joint, and the other end of the second rotating joint is connected to a water pipe extending to the outside of the treatment barrel.

[0007] Preferably, a dual-axis motor is embedded and fixedly connected at the inner center of the ring seat, and two main shafts of the dual-axis motor both penetrate the ring seat and extend outward to be fixedly connected to the connecting block.

[0008] Preferably, the water pipe located on the front side of the ultrafiltration membrane is used to discharge flushing water containing impurities, and the water pipe located on the back side of the ultrafiltration membrane is used for flushing water to enter and reversely flush the ultrafiltration membrane.

[0009] Preferably, the outer wall of the connection cover is fixedly connected to the outer wall of the connection block at a rotation point.

[0010] Preferably, the inner wall of the cleaning tank is sleeved with a sealing strip for resisting against the edge of the grid groove, and the inner wall of the cleaning tank is fixedly connected with an electric telescopic rod for driving the sealing strip to move.

[0011] Preferably, the telescopic end of the electric telescopic rod is fixedly connected to a connecting rod connected to the inner wall of the sealing strip.

[0012] Preferably, the notch of the cleaning tank faces the grid groove.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, a water pipe, a connection block, a cleaning tank and a connection cover are provided, one of the ultrafiltration membranes is covered by the cleaning tank, and clean water is injected into one of the water pipes. After the ultrafiltration membrane is reversely flushed, water mixed with impurities is sprayed out along the other water pipe. In addition, during the flushing process, because the cleaning tank covers the ultrafiltration membrane, it is ensured that untreated sewage in the treatment barrel will not be discharged.

[0015] 2. In the utility model, an electric telescopic rod and a sealing strip are provided, and the electric telescopic rod is extended to enable the connecting rod to drive the sealing strip to move to fit the edge of the grid groove, so that the ultrafiltration membrane to be cleaned is separated from the inside of the treatment barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an ultrafiltration device for sewage treatment proposed by the utility model;

[0017] Figure 2 The utility model proposes an ultrafiltration device for sewage treatment Figure 1 A schematic cross-sectional structure diagram of;

[0018] Figure 3 The utility model proposes an ultrafiltration device for sewage treatment Figure 2 A schematic cross-sectional structure diagram of;

[0019] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0020] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0021] Legend: 1. Treatment barrel; 2. Water pipe; 3. Ring seat; 4. Ultrafiltration membrane; 5. Connecting block; 6. Connecting cover; 7. Electric telescopic rod; 8. Second rotary joint; 9. Grid groove; 10. Sealing strip; 11. Dual-axis motor; 12. Connecting rod; 13. First rotary joint; 14. Cleaning tank. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] like Figure 1-5 As shown, an ultrafiltration device for sewage treatment includes a treatment barrel 1 and an ultrafiltration membrane 4, a ring seat 3 is arranged in the treatment barrel 1, a plurality of grid grooves 9 distributed in a ring array and used to install the ultrafiltration membrane 4 are opened on the side of the ring seat 3, connecting blocks 5 are rotatably connected to the centers of both sides of the ring seat 3, the two connecting blocks 5 are symmetrically distributed and rotate at the same speed, a cleaning groove 14 corresponding to the shape of the grid groove 9 and used to separate the ultrafiltration membrane 4 is opened on the connecting block 5, a first rotary joint 13 is arranged on the cleaning groove 14, one end of the first rotary joint 13 is connected to a connecting cover 6, the other side of the connecting cover 6 is connected to a second rotary joint 8, and the other end of the second rotary joint 8 is connected to a water pipe 2 extending to the outside of the treatment barrel 1.

[0025] The water pipe 2 located on the front side of the ultrafiltration membrane 4 is used to discharge flushing water containing impurities, and the water pipe 2 located on the back side of the ultrafiltration membrane 4 is used for flushing water to enter and reversely flush the ultrafiltration membrane 4.

[0026] Specifically: sewage enters from one side of the treatment barrel 1, is filtered through several ultrafiltration membranes 4 on the ring seat 3, and after a period of use, it is rotated to both sides of the same ultrafiltration membrane 4 through two connecting blocks 5, and clean water is injected from the water pipe 2 on the back of the ultrafiltration membrane 4, and passes through the connecting cover 6 and the cleaning tank 14 in turn, and is reversely flushed from the back of the ultrafiltration membrane 4, so that the impurities filtered by the front side of the ultrafiltration membrane 4 enter the cleaning tank 14 at the front position, and then are discharged through the connecting cover 6 and the water pipe 2 at the front position in turn. Therefore, the connecting block 5 is rotated again to realize the reverse flushing of the ultrafiltration membrane 4 at other positions, which can ensure that the untreated sewage in the treatment barrel 1 will not be discharged during the flushing process.

[0027] Furthermore, a dual-axis motor 11 is embedded and fixedly connected at the center of the ring seat 3 , and two main shafts of the dual-axis motor 11 both penetrate the ring seat 3 and extend outwards to be fixedly connected to the connecting block 5 .

[0028] The outer wall of the connecting cover 6 is fixedly connected to the outer wall of the connecting block 5 at a rotation point.

[0029] Specifically: the two connecting blocks 5 are driven to rotate simultaneously by the dual-axis motor 11, and the connecting cover 6 is rotationally connected to the connecting block 5, which can also ensure that the connecting block 5 and the connecting cover 6 rotate synchronously.

[0030] Furthermore, a sealing strip 10 for resisting against the edge of the grid slot 9 is sleeved on the inner wall of the cleaning tank 14 , and an electric telescopic rod 7 for driving the sealing strip 10 to move is fixedly connected to the inner wall of the cleaning tank 14 .

[0031] The telescopic end of the electric telescopic rod 7 is fixedly connected to a connecting rod 12 connected to the inner wall of the sealing strip 10 .

[0032] The opening of the cleaning tank 14 faces the grid groove 9 .

[0033] Specifically, before backwashing the ultrafiltration membrane 4 , the electric telescopic rod 7 is extended to enable the connecting rod 12 to drive the sealing strip 10 to move to fit the edge of the grid groove 9 , so that the ultrafiltration membrane 4 to be cleaned is separated from the inside of the treatment barrel 1 .

[0034] Working principle: sewage enters from one side of the treatment barrel 1, is filtered by several ultrafiltration membranes 4 and then discharged from the other side. After the ultrafiltration membrane 4 has been used for a period of time, the dual-axis motor 11 drives the two connecting blocks 5 to rotate to the cleaning tank 14 to align with one of the ultrafiltration membranes 4, and the electric telescopic rod 7 is extended to enable the connecting rod 12 to drive the sealing strip 10 to move to fit the edge of the grid groove 9. Clean water is injected from the water pipe 2 on the back of the ultrafiltration membrane 4 to reversely flush the back of the ultrafiltration membrane 4, and then rotates again through the connecting block 5 to reversely flush the ultrafiltration membranes 4 at other positions.

[0035] The wiring diagram of the electric telescopic rod 7 and the dual-axis motor 11 in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the electric telescopic rod 7 and the dual-axis motor 11 are not explained in detail.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An ultrafiltration device for sewage treatment, comprising a treatment tank (1) and an ultrafiltration membrane (4), characterized in that: A ring seat (3) is arranged in the treatment barrel (1), and a plurality of grid grooves (9) distributed in a ring array and used for installing an ultrafiltration membrane (4) are provided on the side of the ring seat (3). The centers of both sides of the ring seat (3) are rotatably connected with connection blocks (5), and the two connection blocks (5) are symmetrically distributed and rotate at the same speed. A cleaning groove (14) corresponding to the shape of the grid groove (9) and used for separating the ultrafiltration membrane (4) is provided on the connection block (5). A first rotating joint (13) is provided on the cleaning groove (14), and one end of the first rotating joint (13) is connected to a connecting cover (6), and the other side of the connecting cover (6) is connected to a second rotating joint (8), and the other end of the second rotating joint (8) is connected to a water pipe (2) extending to the outside of the treatment barrel (1).

2. The ultrafiltration device for sewage treatment according to claim 1, characterized in that: A dual-axis motor (11) is embedded and fixedly connected at the center of the ring seat (3); both main shafts of the dual-axis motor (11) penetrate the ring seat (3) and extend outwards to be fixedly connected to the connection block (5).

3. The ultrafiltration device for sewage treatment according to claim 1, characterized in that: The water pipe (2) located on the front side of the ultrafiltration membrane (4) is used to discharge flushing water containing impurities, and the water pipe (2) located on the back side of the ultrafiltration membrane (4) is used to allow flushing water to enter and reversely flush the ultrafiltration membrane (4).

4. The ultrafiltration device for sewage treatment according to claim 1, characterized in that: The outer wall of the connection cover (6) is fixedly connected to the outer wall of the connection block (5) at a rotation point.

5. The ultrafiltration device for sewage treatment according to claim 1, characterized in that: The inner wall of the cleaning tank (14) is sleeved with a sealing strip (10) for abutting against the edge of the grid slot (9), and the inner wall of the cleaning tank (14) is fixedly connected with an electric telescopic rod (7) for driving the sealing strip (10) to move.

6. The ultrafiltration device for sewage treatment according to claim 5, characterized in that: The telescopic end of the electric telescopic rod (7) is fixedly connected to a connecting rod (12) connected to the inner wall of the sealing strip (10).

7. The ultrafiltration device for sewage treatment according to claim 1, characterized in that: The notch of the cleaning tank (14) faces the grid slot (9).

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