Rotating arm type backwashing filter

Abstract

The utility model provides a rotating arm type backwashing filter. The rotating arm type backwashing filter comprises a tank body, a faceplate arranged in the tank body, a plurality of filter elements, a liquid collecting tank structure and a stepping motor, the faceplate divides the tank body into an independent liquid outlet cavity and an independent liquid inlet cavity, a plurality of openings for mounting the filter elements are formed in the faceplate, and the stepping motor drives the liquid collecting groove structure to rotate in the liquid inlet cavity so as to cover the plurality of openings each time. According to the rotating arm type backwashing filter provided by the utility model, the plurality of adjusting springs are adopted to promote the sealing ring to be tightly attached to the faceplate, so that the self-adaptive adjusting sealing of a whole large plane is realized, a plurality of openings can be covered by rotating the liquid collecting tank structure once, a plurality of filter elements are cleaned, and the cleaning efficiency is greatly improved; besides, the height of the liquid collecting tank can be adjusted, so that the sealing ring can be tightly attached to the faceplate, the sealing ring is convenient to replace, time and labor are saved, and the self-cleaning capability of the rotating arm type backwashing filter is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a rotary arm backwash filter. Background Technology

[0002] Backwash filters have been increasingly used in industries such as mineral processing, mineral beneficiation, water treatment, papermaking, petrochemicals, municipal or agricultural irrigation in recent years.

[0003] Existing backwash filters are inefficient in cleaning filter cartridges. These filters contain a disc with openings for installing filter cartridges. Each cartridge has a collection trough at its lower end. When cleaning is required, the collection trough rotates to clean each cartridge sequentially, cleaning one cartridge per rotation – a low efficiency. The collection trough structure relies on a sealing gasket in contact with the disc (e.g., the rotary arm backwash filter disclosed in patent application CN 221432295U). Because the sealing gasket needs to rotate and contact the disc, the seal between the gasket and the disc deteriorates over time, preventing a consistently tight fit and significantly impacting cartridge cleaning. Furthermore, replacing the gasket requires disassembling numerous components, which is cumbersome and inefficient. Therefore, it is necessary to improve existing rotary arm backwash filters to address these technical problems. Utility Model Content

[0004] The purpose of this invention is to disclose a rotary arm backwash filter that uses multiple adjusting springs to ensure the sealing ring fits tightly against the disc, achieving effective compensation of the sealing surface. During rotation, it can ensure adaptive fine-tuning, realizing adaptive adjustment and sealing of the entire large flat surface. This allows the liquid collection tank structure to cover multiple openings with one rotation, enabling the cleaning of multiple filter elements and greatly improving cleaning efficiency. In addition, the height of the liquid collection tank is adjustable, which not only ensures that the sealing ring fits tightly against the disc but also facilitates the replacement of the sealing ring, saving time and effort and greatly improving the self-cleaning capability of the rotary arm backwash filter.

[0005] To achieve the above objectives, this utility model provides a rotary arm backwash filter, including a tank, a disc installed inside the tank, several filter elements, a liquid collection tank structure, and a stepper motor. The disc divides the tank into an independent outlet chamber and an inlet chamber. The disc has several openings for installing filter elements. The stepper motor drives the liquid collection tank structure to rotate in the inlet chamber to cover multiple openings at a time. The liquid collection tank structure includes a movably connected liquid collection tank and a liquid collection pipe. The liquid collection tank is provided with a sealing ring. The liquid collection tank and the sealing ring are connected by several adjusting springs, which cause the sealing ring and the disc to fit tightly together.

[0006] In some embodiments, a drain pipe installed on the tank is also included, the stepper motor shaft is connected to a hollow shaft, the hollow shaft is rotatably connected to the drain pipe, and the liquid collection tank structure is connected to the hollow shaft.

[0007] In some embodiments, a support base is connected to the sewage pipe, and a bushing is provided inside the support base, with the hollow shaft installed inside the bushing.

[0008] In some embodiments, the inlet chamber is connected to an inlet pipe, and the outlet chamber is connected to an outlet pipe.

[0009] In some embodiments, the top of the liquid collection tank is provided with an annular limiting groove, the adjusting springs are evenly arranged in the limiting groove, the sealing ring is located on the limiting groove, the outer wall of the sealing ring is in contact with the inner wall of the liquid collection tank, and the liquid collection pipe is connected to the hollow shaft through a connecting pipe.

[0010] In some embodiments, a limiting plate and a fixing screw are also included, the fixing screw passing through the limiting plate and the collection tank in sequence and abutting against the collection pipe.

[0011] In some embodiments, a round nut screwed onto the collection pipe is also included, the round nut abutting against the bottom of the collection tank, and the limiting plate extends into the groove of the round nut.

[0012] In some embodiments, a sealing ring is provided between the liquid collection tank and the liquid collection pipe.

[0013] In some embodiments, a sealing ring is provided between the outer wall of the sealing ring and the inner wall of the liquid collection tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The rotary arm backwash filter provided by this utility model uses multiple adjusting springs to make the sealing ring fit tightly against the disc, realizing effective compensation of the sealing surface. It can ensure adaptive fine adjustment during rotation, realizing adaptive adjustment and sealing of the entire large plane. This allows the liquid collection tank structure to cover multiple openings with one rotation, so as to clean multiple filter elements, greatly improving cleaning efficiency. In addition, the height of the liquid collection tank can be adjusted, which not only ensures that the sealing ring fits tightly against the disc, but also facilitates the replacement of the sealing ring, saving time and effort, and greatly improving the self-cleaning ability of the rotary arm backwash filter. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the rotary arm backwash filter shown in this utility model;

[0016] Figure 2 for Figure 1 The diagram shows the structure of the liquid collection tank and the connection with the hollow shaft.

[0017] Figure 3 for Figure 2 A schematic diagram of the liquid collection tank structure shown;

[0018] Figure 4 for Figure 3 An enlarged view of label A shown. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0020] like Figure 1-4 The rotary backwash filter shown includes a tank 1, a disc 2 installed inside the tank 1, several filter elements 3, a liquid collection tank structure 6, and a stepper motor 4.

[0021] The flower plate 2 divides the tank 1 into an independent outlet chamber 21 and an inlet chamber 22. The flower plate 2 has an opening 20 for installing the filter element 3, which is located inside the outlet chamber 21. The inlet chamber 22 is connected to an inlet pipe 51, and the outlet chamber 21 is connected to an outlet pipe 52. The raw liquid enters the inlet chamber 22 through the inlet pipe 51, and under pressure, it enters the filter element 3 through the opening 20. After being filtered by the filter element 3, impurities are retained on the inner wall of the filter element 3, and the clear liquid enters the outlet chamber 21 and finally flows out from the outlet pipe 52.

[0022] The stepper motor 4 is mounted on the top of the tank body 1. The stepper motor 4 has a rotating shaft 41 connected to a hollow shaft 42, which passes through a flower disc 2. The hollow shaft 42 and the flower disc 2 are connected by a bushing 421. The tank body 1 also includes a drain pipe 43 mounted on it. The hollow shaft 42 is rotatably connected to the drain pipe 43. Specifically, a support base 431 is connected to the drain pipe 43, and a bushing 432 is provided inside the support base 431. The hollow shaft 42 is installed inside the bushing 432.

[0023] The liquid collection tank structure 6 includes a liquid collection tank 61 and a liquid collection pipe 62 connected to each other. The liquid collection tank structure 6 is connected to the hollow shaft 42. Specifically, the liquid collection pipe 62 is connected to a connecting pipe 7, which is sleeved on the hollow shaft 42. The hollow shaft 42 has an opening on the side facing the liquid collection pipe 62, thereby connecting the liquid collection tank structure 6, the connecting pipe 7, the hollow shaft 42, and the drain pipe 43.

[0024] The stepper motor 4 drives the liquid collection tank structure 6 to rotate in the liquid inlet chamber 22. Each rotation covers multiple openings 20. When the liquid collection tank structure 6 covers an opening 20, the raw liquid in the filter element 3 is discharged sequentially through the liquid collection tank structure 6, connecting pipe 7, hollow shaft 42, and drain pipe 43. The external pressure of the filter element 3 is greater than the internal pressure. Under the action of pressure, impurities on the inner wall of the filter element 3 fall off and are discharged sequentially through the liquid collection tank structure 6, connecting pipe 7, hollow shaft 42, and drain pipe 43, thereby cleaning the filter element 3. Subsequently, the liquid collection tank structure 6 rotates to cover the next opening 20, and the above operation is repeated.

[0025] The liquid collection tank 61 is provided with a sealing ring 67 at its top, which contacts the flower disc 2 to provide a sliding seal. The liquid collection tank 61 and the sealing ring 67 are connected by several adjusting springs 68. Specifically, the liquid collection tank 61 has an annular limiting groove 610 at its top, and the adjusting springs 68 are evenly spaced within the limiting groove 610. The sealing ring 67 is located on the limiting groove 610, and its outer wall fits against the inner wall of the liquid collection tank 61. A sealing ring 69 is provided between the outer wall of the sealing ring 67 and the inner wall of the liquid collection tank 61 for sealing. The adjusting springs 68 adjust the height of the sealing ring 67 to ensure that it fits tightly against the flower disc 2.

[0026] Multiple adjusting springs 68 are used to make the sealing ring 67 fit tightly against the disc 2, which effectively compensates the sealing surface. During rotation, adaptive fine adjustment can be guaranteed, realizing adaptive adjustment and sealing of the entire large plane. The liquid collection tank structure 6 can cover multiple openings 20 with one rotation to clean multiple filter elements 3, improving cleaning efficiency and greatly enhancing the self-cleaning ability of the rotary backwash filter.

[0027] It also includes a limiting plate 64 and a fixing screw 65. The fixing screw 65 passes through the limiting plate 64 and the liquid collection tank 61 in sequence and abuts against the liquid collection pipe 62, thereby fixing the position of the liquid collection tank 61 and the liquid collection pipe 62.

[0028] It also includes a round nut 63 screwed onto the liquid collection pipe 62, the round nut 63 abutting against the bottom of the liquid collection tank 61. The round nut 63 can not only push the liquid collection tank 61 up and down to ensure that the sealing ring 67 fits tightly against the disc 2, but also lower the liquid collection tank 61, thereby facilitating the replacement of the sealing ring 67, saving time and effort, and greatly improving the self-cleaning ability of the rotary arm backwash filter.

[0029] The limiting plate 64 extends into the groove of the round nut 63 to prevent the round nut 63 from rotating. A sealing ring 66 is provided between the liquid collection tank 61 and the liquid collection pipe 62 to ensure the sealing between them.

[0030] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotary backwash filter, comprising a tank, a disc installed inside the tank, several filter elements, a liquid collection tank structure, and a stepper motor; the disc divides the tank into an independent outlet chamber and an inlet chamber, the disc is provided with several openings for installing filter elements, and the stepper motor drives the liquid collection tank structure to rotate in the inlet chamber to cover multiple openings each time. The liquid collection tank structure includes a liquid collection tank and a liquid collection pipe that are movably connected. A sealing ring is provided on the liquid collection tank. The liquid collection tank and the sealing ring are connected by a number of adjusting springs. The adjusting springs cause the sealing ring and the flower plate to fit tightly together.

2. The rotary arm backwash filter according to claim 1, characterized in that, It also includes a drain pipe installed on the tank body, the stepper motor shaft is connected to a hollow shaft, the hollow shaft is rotatably connected to the drain pipe, and the liquid collection tank structure is connected to the hollow shaft.

3. The rotary arm backwash filter according to claim 2, characterized in that, The sewage pipe is connected to a support base, and a bushing is provided inside the support base. The hollow shaft is installed inside the bushing.

4. The rotary arm backwash filter according to claim 1, characterized in that, The inlet chamber is connected to an inlet pipe, and the outlet chamber is connected to an outlet pipe.

5. The rotary arm backwash filter according to claim 2, characterized in that, The top of the liquid collection tank is provided with an annular limiting groove, the adjusting springs are evenly arranged in the limiting groove, the sealing ring is located on the limiting groove, the outer wall of the sealing ring is in contact with the inner wall of the liquid collection tank, and the liquid collection pipe is connected to the hollow shaft through a connecting pipe.

6. The rotary arm backwash filter according to claim 1, characterized in that, It also includes a limiting plate and fixing screws, the fixing screws passing through the limiting plate and the liquid collection tank in sequence and abutting against the liquid collection pipe.

7. The rotary arm backwash filter according to claim 6, characterized in that, It also includes a round nut screwed onto the liquid collection pipe, the round nut abutting against the bottom of the liquid collection tank, and the limiting plate extending into the groove of the round nut.

8. The rotary arm backwash filter according to claim 1 or 7, characterized in that, A sealing ring is provided between the liquid collection tank and the liquid collection pipe.

9. The rotary arm backwash filter according to claim 1 or 5, characterized in that, A sealing ring is provided between the outer wall of the sealing ring and the inner wall of the liquid collection tank.

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