Efficient filter element backwashing equipment and use method thereof

Abstract

The efficient filter element backwashing equipment comprises a tank body, an outer cylinder, an inner cylinder and a plurality of spraying pipes, a rotating shaft is arranged in the middle of the inner cylinder, the inner cylinder is fixedly connected with the rotating shaft through a connecting plate, the rotating shaft is driven by a rotating driving mechanism to rotate, the upper end of the rotating shaft extends out of the inner cylinder and is rotatably connected with an outer cylinder top plate, and the outer cylinder top plate is fixedly connected with the outer cylinder; a top pinion is fixedly connected to the upper end of the rotary shaft, an inner tooth-shaped gear is fixedly connected to a top plate of the outer barrel, the top pinion is connected with the inner tooth-shaped gear through a transfer gear, a washing chamber is formed between the outer barrel and the inner barrel, the spraying pipe is located in the washing chamber, and the lower end of the spraying pipe is connected with a water supply pipe. And brushes are respectively arranged on the inner wall of the outer cylinder and the outer wall of the inner cylinder. Through reverse rotation of the inner cylinder and the outer cylinder, the inner brush and the outer brush are matched, the filter element can be brushed from the inner side and the outer side at the same time, the filter element is flushed from inside to outside in combination with high-pressure water spraying of the spraying holes of the spraying pipe, dead-corner-free flushing is achieved, and the cleaning efficiency and cleanliness are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of filter element cleaning, and particularly relates to an efficient backwashing device for filter elements. Background Art

[0002] Filter elements, as key components for fluid filtration and separation, are widely used. From lubricating oil filtration and air purification in industrial production to domestic drinking water treatment and sewage treatment, etc., the efficient and stable operation of filter elements is directly related to the performance and service life of the entire system. However, with the continuous use of filter elements, various impurities will continuously adhere to and accumulate on the surface and internal pores of the filter elements, gradually causing the filter elements to become blocked, the filtration efficiency to drop significantly, the operating resistance of the system to increase, and even equipment failures to occur. Therefore, timely and efficient cleaning and regeneration of the used filter elements to restore their filtration performance has become an important link to ensure the normal operation of production and life. Currently, common filter element cleaning methods mainly include manual brushing, high-pressure water flushing, and chemical agent immersion cleaning, etc. Manual brushing relies on manual operation, which is not only inefficient, labor-intensive, but also difficult to ensure the uniformity and thoroughness of cleaning. For filter elements with complex structures and tiny pores, it is even more difficult to meet the cleaning standards; although high-pressure water flushing can improve the cleaning efficiency to a certain extent, the single flushing direction and water flow distribution make it difficult to fully clean some areas on the surface and inside of the filter element, easily causing cleaning dead ends; although chemical agent immersion cleaning can dissolve some stubborn impurities, the use of chemical agents not only increases the cleaning cost, but may also corrode the filter element material, and at the same time brings subsequent sewage treatment problems, which does not meet the environmental protection requirements. In addition, most of the existing filter element cleaning equipment has a single function and cannot effectively combine multiple cleaning methods, making it difficult to meet the high-efficiency cleaning requirements for different types and different pollution levels of filter elements. Summary of the Invention

[0003] To solve the above technical problems, the technical solution adopted by the present invention is: an efficient backwashing device for filter elements, including a tank body, an outer cylinder, an inner cylinder, and a plurality of spray pipes. The inner cylinder is located inside the outer cylinder and is coaxially arranged with the outer cylinder. A rotary shaft is provided in the middle of the inner cylinder. The rotary shaft is rotatably connected to the tank body through a lower support. The inner cylinder is fixedly connected to the rotary shaft through a connecting plate. The rotary shaft is driven to rotate by a rotary drive mechanism. The upper end of the rotary shaft extends out of the inner cylinder and is rotatably connected to an outer cylinder top plate. The outer cylinder top plate is fixedly connected to the outer cylinder. A top small gear is fixedly connected to the upper end of the rotary shaft. An internal toothed gear is fixedly connected to the outer cylinder top plate. The top small gear is located inside the internal toothed gear. The top small gear is connected to the internal toothed gear through an intermediate gear. A flushing chamber is formed between the outer cylinder and the inner cylinder. A plurality of barrel openings respectively communicating with the flushing chamber are provided on the outer cylinder top plate. The spray pipes are located in the flushing chamber. Spray holes are provided on both sides of the spray pipes. The lower end of the spray pipes is connected to a water supply pipe. Brushes are respectively installed on the inner wall of the outer cylinder and the outer wall of the inner cylinder. The lower end of the flushing chamber communicates with the inside of the tank body.

[0004] Preferably, an installation plate is provided above the outer cylinder top plate. The transfer gear and the rotating shaft are respectively rotatably connected to the installation plate. The transfer gear meshes with the top small gear and the internal toothed gear. Both sides of the installation plate are fixedly connected to the tank body.

[0005] Preferably, the rotary drive mechanism includes a reduction motor and a plurality of transmission gears. A large gear is fixedly connected to the lower end of the rotating shaft. The reduction motor drives the large gear to rotate through the transmission gears.

[0006] Preferably, an annular pipe is provided below the flushing chamber. The spray pipe is fixedly connected to the annular pipe and communicates with the inside of the annular pipe. One end of the water supply pipe is connected to the annular pipe, and the other end is connected to a high-pressure circulation pump. The high-pressure circulation pump includes a water inlet pipe extending into the tank body.

[0007] Preferably, a filter screen is provided inside the tank body. The filter screen divides the inside of the tank body into a retention area and a water return area. The water inlet pipe extends into the water return area, and the flushing chamber is located above the retention area.

[0008] Preferably, a cover plate is provided at the barrel opening.

[0009] Preferably, the spray pipes are arranged in a circumferential array around the rotating shaft.

[0010] Preferably, a support ring is fixedly connected to the lower end of the spray pipe.

[0011] The usage method of the filter element high-efficiency backwashing device includes the following steps: Put the filter element into the flushing chamber, and each filter element is sleeved on a spray pipe; after all the filter elements are placed, the spray pipe sprays water; the rotary drive mechanism drives the rotating shaft to rotate, the rotating shaft drives the inner cylinder to rotate, the brush on the inner cylinder brushes the surface of the filter element, the rotating shaft drives the outer cylinder top plate to rotate through the small gear, the transfer gear, and the internal toothed gear, and then drives the outer cylinder to rotate. The rotating directions of the inner cylinder and the outer cylinder are opposite, and the brush on the inner wall of the outer cylinder brushes the surface of the filter element; the sewage containing heavy metals generated during the washing process of the filter element falls into the tank body; after the filter element is washed, the spray pipe stops spraying water, the rotating shaft stops rotating, and the filter element is taken out.

[0012] The beneficial effects of the present invention are as follows: The high-efficiency backwashing device for the filter element of the present invention can brush the filter element from both the inside and the outside simultaneously by the reverse rotation of the inner cylinder and the outer cylinder, in combination with the inner and outer brushes. Combined with the high-pressure water spraying from the spray holes of the spray pipe, the filter element is flushed from the inside to the outside, achieving a dead-angle-free flushing, greatly improving the cleaning efficiency and cleanliness; the rotary drive mechanism cooperates with the gear transmission system to ensure the stable and reliable operation of the device; the design of the annular pipe and the high-pressure circulation pump realizes the recycling of water resources and reduces the cleaning cost; the filter net is partitioned to effectively separate the sewage and the recyclable water, reducing the sewage treatment pressure and being more environmentally friendly; the device is easy to operate, applicable to various types of filter elements, meeting the cleaning requirements of different pollution degrees, and greatly improving the applicability and economy of filter element cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the present invention from another angle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0015] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0016] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Such as Figure 1-2As shown in the figure, the high-efficiency backwashing device for filter elements includes a tank body 1, an outer cylinder 2, an inner cylinder 3 and several spray pipes 4. The inner cylinder 3 is located inside the outer cylinder 2 and is coaxially arranged with the outer cylinder 2. A rotating shaft 5 is provided in the middle of the inner cylinder 3. The rotating shaft 5 is rotatably connected to the tank body 1 through a lower support 6. The inner cylinder 3 is fixedly connected to the rotating shaft 5 through a connecting plate 7. The rotating shaft 5 is driven to rotate by a rotation driving mechanism. The upper end of the rotating shaft 5 extends out of the inner cylinder 3 and is rotatably connected to an outer cylinder top plate 8. The outer cylinder top plate 8 is fixedly connected to the outer cylinder 2. The upper end of the rotating shaft 5 is fixedly connected with a top small gear 9. An inner toothed gear 10 is fixedly connected to the outer cylinder top plate 8. The top small gear 9 is located inside the inner toothed gear 10. The top small gear 9 is connected to the inner toothed gear 10 through an intermediate gear 11. A washing chamber 12 is formed between the outer cylinder 2 and the inner cylinder 3. Several barrel openings 13 respectively communicating with the washing chamber 12 are provided on the outer cylinder top plate 8. The spray pipes 4 are located in the washing chamber 12. Spray holes are provided on the surface of the spray pipes 4. The lower end of the spray pipes 4 is connected to a water supply pipe 14. Brushes 15 are respectively installed on the inner wall of the outer cylinder 2 and the outer wall of the inner cylinder 3. The lower end of the washing chamber 12 communicates with the inside of the tank body 1. The rotation driving mechanism (the reduction motor 17 drives the large gear 19 to rotate through the transmission gear 18) drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the inner cylinder 3 to rotate; the top small gear 9 at the upper end of the rotating shaft 5 meshes with the inner toothed gear 10 through the intermediate gear 11, driving the outer cylinder top plate 8 and the outer cylinder 2 to rotate, and the inner cylinder 3 and the outer cylinder 2 rotate in opposite directions. The inner cylinder 3 and the outer cylinder 2 rotate in opposite directions, and cooperate with the brushes 15 on their respective inner walls, which can brush the filter element 26 from both the front and back sides at the same time, comprehensively removing the impurities on the surface of the filter element 26. Compared with brushing in a single direction, the cleaning efficiency and cleanliness are greatly improved; the gear transmission system ensures the stability and reliability of rotation, reducing the risk of failures during the operation of the equipment.

[0018] Further, an installation plate 16 is provided above the outer cylinder top plate 8. The intermediate gear 11 and the rotating shaft 5 are respectively rotatably connected to the installation plate 16. The intermediate gear 11 meshes with the top small gear 9 and the inner toothed gear 10. Both sides of the installation plate 16 are fixedly connected to the tank body 1.

[0019] Further, the rotation driving mechanism includes a reduction motor 17 and several transmission gears 18. A large gear 19 is fixedly connected to the lower end of the rotating shaft 5. The reduction motor 17 drives the large gear 19 to rotate through the transmission gears 18.

[0020] Further, an annular pipe 20 is provided below the washing chamber 12. The spray pipes 4 are fixedly connected to the annular pipe 20 and communicate with the inside of the annular pipe 20. One end of the water supply pipe 14 is connected to the annular pipe 20, and the other end is connected to a high-pressure circulation pump 21. The high-pressure circulation pump 21 includes a water inlet pipe 22 extending into the tank body 1. The high-pressure circulation pump 21 recycles the water sprayed from the spray pipes 4 and flowing into the tank body 1. The annular pipe 20 divides the water supplied by the water supply pipe 14, making the water pressure of the spray pipes 4 balanced and stable.

[0021] Further, a filter screen 27 is provided inside the tank body 1. The filter screen 27 divides the inside of the tank body 1 into a retention area 24 and a water return area 23. The water inlet pipe 22 extends into the water return area 23, and the flushing chamber 12 is located above the retention area 24. The high-pressure circulation pump 21 pumps water from the water return area 23 of the tank body 1 through the water inlet pipe 22, transports the water to the annular pipe 20 through the water supply pipe 14, and then sprays water on the filter element 26 through the spray holes of the spray pipes 4 connected to the annular pipe 20. The annular pipe 20 cooperates with the high-pressure circulation pump 21 to realize the recycling of water resources, reduce the water resource consumption during the cleaning process, and save costs. The retention area 24 is further separated by an overflow plate. The sewage flowing out of the flushing chamber 12 overflows through the overflow plate and then passes through the filter screen 27, and finally is sucked away by the high-pressure circulation pump 21 for reuse. When the sewage concentration in the retention area 24 reaches the specified concentration, it is uniformly discharged for sewage treatment.

[0022] Further, a cover plate 25 is provided at the barrel opening 13. During the flushing process of the filter element 26, the cover plate 25 tightly covers the barrel opening 13 to prevent water from flowing out of the barrel opening 13.

[0023] Further, the spray pipes 4 are arranged in a circumferential array around the rotation axis 5. In this way, the filter elements 26 in the flushing chamber 12 are evenly spaced, improving the space utilization rate of the flushing chamber 12 and ensuring the flushing effect of each filter element 26.

[0024] Further, a support ring 28 is fixedly connected to the lower end of the spray pipe 4. After the filter element 26 is sleeved on the spray pipe 4, the support ring 28 provides support. A ring-shaped backing plate (copper plate or polytetrafluoroethylene plate) with self-lubricating properties can also be provided on the support ring 28. The support ring 28 is also made of self-lubricating material, and grooves for increasing friction are provided on the upper surface of the ring-shaped backing plate. In this way, the filter element 26 placed on the support ring 28 contacts the ring-shaped backing plate. During the rotation of the inner cylinder 3 and the outer cylinder 2, due to the action of the brush 15, the filter element 26 can also rotate at a slower speed, thereby realizing a slow automatic angle adjustment. The high-pressure circulation pump 21 can be controlled by a pulse frequency conversion control system, so that the spray pipe 4 generates adjustable pulsed water flow, and in cooperation with the continuously adjusted angle of the filter element 26, a "water hammer + swirl" double cleaning effect is formed to improve the cleaning efficiency of the blockages inside the micropores of the filter element.

[0025] The usage method of the high-efficiency backwashing device for the filter element 26 includes the following steps: placing the filter element 26 into the flushing chamber 12, with each filter element 26 sleeved on a spray pipe 4; after all the filter elements 26 are placed, the spray pipe 4 sprays water; the rotation drive mechanism drives the rotation of the rotating shaft 5, the rotation of the rotating shaft 5 drives the rotation of the inner cylinder 3, and the brush 15 on the inner cylinder 3 brushes the surface of the filter element 26. The rotating shaft 5 drives the rotation of the outer cylinder top plate 8 through the small gear, the intermediate gear 11, and the internal gear-shaped gear 10, thereby driving the rotation of the outer cylinder 2. The rotation directions of the inner cylinder 3 and the outer cylinder 2 are opposite, and the brush 15 on the inner wall of the outer cylinder 2 brushes the surface of the filter element 26; the sewage containing heavy metals generated during the brushing process of the filter element 26 falls into the tank body 1; after the flushing of the filter element 26 is completed, the spray pipe 4 stops spraying water, the rotating shaft 5 stops rotating, and the filter element 26 is taken out.

[0026] It is worth mentioning that the technical features such as the motor and the high-pressure pump involved in this invention patent application should be regarded as the prior art. The specific structures, working principles, and possible control methods and spatial layout methods of these technical features can be selected conventionally in the art and should not be regarded as the invention points of this invention patent. This invention patent will not be further specifically elaborated.

[0027] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. High-efficiency backwashing equipment for filter elements, characterized in that, It includes a tank body, an outer cylinder, an inner cylinder and several spray pipes. The inner cylinder is located inside the outer cylinder and is coaxially arranged with the outer cylinder. A rotating shaft is provided in the middle of the inner cylinder. The rotating shaft is rotatably connected to the tank body through a lower support. The inner cylinder is fixedly connected to the rotating shaft through a connecting plate. The rotating shaft is driven to rotate by a rotation driving mechanism. The upper end of the rotating shaft extends out of the inner cylinder and is rotatably connected with an outer cylinder top plate. The outer cylinder top plate is fixedly connected to the outer cylinder. A top small gear is fixedly connected to the upper end of the rotating shaft. An inner toothed gear is fixedly connected to the outer cylinder top plate. The top small gear is located inside the inner toothed gear. The top small gear is connected to the inner toothed gear through an intermediate gear. A flushing chamber is formed between the outer cylinder and the inner cylinder. Several cylinder openings respectively communicating with the flushing chamber are provided on the outer cylinder top plate. The spray pipes are located in the flushing chamber. Spray holes are provided on both sides of the spray pipes. The lower end of the spray pipe is connected with a water supply pipe. Brushes are respectively installed on the inner wall of the outer cylinder and the outer wall of the inner cylinder. The lower end of the flushing chamber communicates with the inside of the tank body.

2. The high-efficiency backwashing device for filter elements according to claim 1, characterized in that, An installation plate is provided above the outer cylinder top plate. The intermediate gear and the rotating shaft are respectively rotatably connected to the installation plate. The intermediate gear meshes with the top small gear and the inner toothed gear. Both sides of the installation plate are respectively fixedly connected to the tank body.

3. The high-efficiency backwashing device for filter elements according to claim 2, characterized in that, The rotation driving mechanism includes a reduction motor and several transmission gears. A large gear is fixedly connected to the lower end of the rotating shaft. The reduction motor drives the large gear to rotate through the transmission gears.

4. The high-efficiency backwashing device for filter elements according to claim 1, characterized in that, An annular pipe is provided below the flushing chamber. The spray pipes are fixedly connected to the annular pipe and communicate with the inside of the annular pipe. One end of the water supply pipe is connected to the annular pipe, and the other end is connected to a high-pressure circulation pump. The high-pressure circulation pump includes a water inlet pipe extending into the inside of the tank body.

5. The high-efficiency backwashing device for filter elements according to claim 4, characterized in that, A filter screen is provided inside the tank body. The filter screen divides the inside of the tank body into a retention area and a water return area. The water inlet pipe extends into the water return area. The flushing chamber is located above the retention area.

6. The high-efficiency backwashing device for filter elements according to claim 1, characterized in that, A cover plate is provided at the cylinder opening.

7. The high-efficiency backwashing device for filter elements according to claim 1, characterized in that The spray pipes are arranged in a circumferential array around the rotating shaft.

8. The high-efficiency backwashing device for filter elements according to claim 7, characterized in that, A support ring is fixedly connected to the lower end of the spray pipe.

9. The method of using the high-efficiency backwashing device for the filter element according to any one of claims 1-8, characterized in that, It includes the following steps: Put the filter element into the flushing chamber, and each filter element is sleeved on a spray pipe; After all the filter elements are placed, the spray pipes spray water; The rotation driving mechanism drives the rotating shaft to rotate. The rotation of the rotating shaft drives the inner cylinder to rotate. The brush on the inner cylinder brushes the surface of the filter element. The rotating shaft drives the outer cylinder top plate to rotate through the small gear, the intermediate gear and the inner toothed gear, and then drives the outer cylinder to rotate. The rotation directions of the inner cylinder and the outer cylinder are opposite. The brush on the inner wall of the outer cylinder brushes the surface of the filter element; The sewage containing heavy metals generated during the brushing process of the filter element falls into the tank body; After the filter element is flushed, the spray pipes stop spraying water, the rotating shaft stops rotating, and the filter element is taken out.

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