A filter device facilitating replacement of a filter screen

Abstract

The utility model relates to filter device technical field, especially disclose a kind of filter device of filter screen replacement is convenient, hollow filter screen support seat is fixedly connected in filter cylinder, and sliding lift ring is slidably connected in hollow filter screen support seat, when carrying out the dismounting work to filter screen body, staff pulls up filter screen body sliding, at this time, the surface of filter screen body extrudes the lower end inclined surface of triangular limiting sheet, and makes its release the limit of filter screen body upper end, and in the pulling process, first spring will reset and push sliding lift ring sliding upwards, while pushing three L-shaped limit seat and opening outward and releasing the adhesion of filter screen body, filter screen body is assisted to take work by first spring and be lifted upwards, by the elastic adhesion limit mode of L-shaped limit seat and triangular limiting sheet, when carrying out dismounting and taking operation, it is not necessary to carry out dismounting work in turn by screwing bolt, more efficient and faster.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a filtration device that facilitates filter replacement. Background Technology

[0002] In various production processes involving liquid filtration, filtration devices play a crucial role. They effectively remove impurities from liquids, ensuring the smooth operation of subsequent production stages and product quality. For filtration devices, the filter screen is a core component; its performance and ease of maintenance directly affect the overall operating efficiency and cost of the filtration system. Current devices typically require the following technologies in practical applications:

[0003] 1. Reliable filter installation technology ensures that the filter is stable during the filtration process and does not shift or leak;

[0004] 2. Effective filter fixing technology can withstand a certain amount of pressure to ensure filtration effect;

[0005] It features stable pipeline connection and transportation capabilities, using flange connections to connect pipelines for the transportation and discharge of liquids requiring filtration.

[0006] Currently, many filtration devices commonly use bolts and nuts for filter screen installation. This installation method aims to securely fix the filter screen inside the filtration device through the tightening force of the bolts and nuts.

[0007] However, the above method has a significant problem: in order to ensure contact with the filtered liquid, the filter screen often sinks into the interior of the filter device. When the filter screen needs to be disassembled for cleaning or replacement, the operator must go deep into the device to operate. Due to the limited space inside the device and the narrow operating space, the operation is extremely inconvenient, increasing the difficulty and complexity of the operation. On the other hand, using bolts and nuts for installation requires the use of tools to tighten multiple bolts and nuts in sequence for each disassembly and installation. This process not only consumes a lot of time and energy, but is also cumbersome and seriously affects work efficiency. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a filtration device that facilitates filter replacement. It solves the problem that filter screens often sink into the filtration device to ensure contact with the filtered liquid. When the filter screen needs to be disassembled for cleaning or replacement, operators must enter the device, which is extremely inconvenient due to the limited internal space and narrow operating area, increasing the difficulty and complexity of operation. Furthermore, the use of bolts and nuts for installation requires tools to tighten multiple bolts and nuts sequentially for each disassembly and installation, a process that is not only time-consuming and labor-intensive but also cumbersome, severely impacting work efficiency.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A filtration device for easy filter replacement includes a filter cylinder, inside which a hollow filter support is fixedly connected. A sliding lifting ring is slidably connected to the hollow filter support. A first spring is fixedly connected to one end of the outer surfaces of the hollow filter support and the sliding lifting ring that are close to each other. A centering and positioning rotation mechanism is provided inside the sliding lifting ring. The rotation mechanism includes three L-shaped limiting seats and three triangular limiting plates. The three L-shaped limiting seats are rotatably connected inside the hollow filter support and are all disposed inside the sliding lifting ring. The three triangular limiting plates are slidably connected to the three L-shaped limiting seats. A set of second springs is fixedly connected to the outer surface of each of the three triangular limiting plates, and the three sets of second springs are fixedly connected to the three L-shaped limiting seats.

[0011] Preferably, each of the three L-shaped limiting seats has a sealing gasket fitted onto its inner surface, and the three sealing gaskets are respectively fitted onto the outer surface of the three triangular limiting pieces.

[0012] Preferably, the filter cylinder is provided with a filter screen body inside, and the filter screen body is located at the upper end of the sliding lifting ring.

[0013] Preferably, the three L-shaped limiting seats and the three triangular limiting plates are all in contact with the outer surface of the filter body, and a U-shaped pull handle is fixedly connected to the upper end of the filter body.

[0014] Preferably, the upper end of the filter cylinder is provided with a filter cylinder top cover, and a support is fixedly connected to the outer surface of the filter cylinder.

[0015] Preferably, the support is internally rotatably connected to a T-shaped external threaded rod, and a locking nut is threaded onto the outer surface of the T-shaped external threaded rod.

[0016] Preferably, the locking nut and the outer surface of the filter cartridge top cover are in contact, and a cleaning motor is fixedly connected to the upper end of the filter cartridge top cover.

[0017] Preferably, the lower end of the cleaning motor is provided with a cleaning brush rod, which is rotatably connected inside the filter cylinder and the filter screen body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When disassembling the filter body, the worker pulls the filter body upwards and slides it. At this time, the surface of the filter body presses against the inclined surface of the lower end of the triangular limiting piece, causing it to loosen its limit on the upper end of the filter body. During the pulling process, the first spring will reset and push the sliding lifting ring upwards. While pushing the three L-shaped limiting seats outwards to loosen their contact with the filter body, the first spring lifts the filter body upwards to assist in the removal process. Through the elastic contact and limiting method of the L-shaped limiting seats and the triangular limiting piece, the disassembly and removal operation does not require the sequential tightening of bolts, making it more efficient and faster.

[0020] 2. When performing filtration, the cleaning motor installed on the top of the filter cartridge can be started. The output shaft of the cleaning motor drives the cleaning brush rod to rotate. Both sides of the cleaning brush rod are equipped with bristles. The rotating bristles clean the screening mesh of the filter body by roller brushing, thereby avoiding mesh blockage and ensuring the screening effect of the filter body. Attached Figure Description

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is an exploded view of the cleaning brush handle connection of this utility model;

[0024] Figure 3 This is an exploded view of the filter body of this utility model.

[0025] Figure 4 This is an exploded view of the sliding lifting ring connection of this utility model;

[0026] Figure 5 This is an exploded view of the triangular limiting piece connection of this utility model.

[0027] Legend: 11. Filter cartridge; 12. Hollow filter screen support; 13. Sliding lifting ring; 14. First spring; 15. L-shaped limit seat; 16. Triangular limit piece; 17. Second spring; 18. Sealing gasket; 19. Filter screen body; 21. U-shaped pull handle; 22. Filter cartridge top cover; 23. Support; 24. T-shaped external thread rod; 25. Locking nut; 26. Cleaning motor; 27. Cleaning brush rod. Detailed Implementation

[0028] This application provides a filtration device that facilitates filter replacement. It effectively solves the problem that filter screens often sink into the filtration device to ensure contact with the filtered liquid. When the filter screen needs to be disassembled for cleaning or replacement, operators must enter the device, which is extremely inconvenient due to the limited internal space and narrow operating area, increasing the difficulty and complexity of operation. Furthermore, using bolts and nuts for installation requires tightening multiple bolts and nuts sequentially with tools each time disassembly and installation. This process is not only time-consuming and labor-intensive but also cumbersome, severely impacting work efficiency. When disassembling the filter body, the worker pulls the filter body upwards and slides it. At this time, the surface of the filter body presses against the inclined surface of the lower end of the triangular limiting plate, causing it to loosen its restriction on the upper end of the filter body. During the pulling process, the first spring will reset and push the sliding lifting ring upwards. While pushing the three L-shaped limiting seats outwards to loosen their contact with the filter body, the first spring lifts the filter body upwards to assist in the removal process. Through the elastic contact and restriction of the L-shaped limiting seats and the triangular limiting plate, the disassembly and removal operation does not require the sequential tightening of bolts, making it more efficient and faster.

[0029] Example

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the technical solution in this application embodiment effectively solves the problem that filter screens often sink into the filter device to ensure contact with the filtered liquid. When the filter screen needs to be disassembled for cleaning or replacement, operators must enter the device to operate. Due to the limited internal space and narrow operating space, the operation is extremely inconvenient, increasing the difficulty and complexity of operation. On the other hand, using bolts and nuts for installation requires the use of tools to tighten multiple bolts and nuts each time disassembly and installation. This process not only consumes a lot of time and effort, but is also cumbersome and seriously affects work efficiency. The overall idea is as follows: A filter device that facilitates filter screen replacement includes a filter cylinder 11, and a hollow filter screen support 12 is fixedly connected inside the filter cylinder 11. A sliding lifting ring 13 is slidably connected to the support base 12. A first spring 14 is fixedly connected to one end of the outer surfaces of the hollow filter support base 12 and the sliding lifting ring 13 that are close to each other. A centering and positioning rotating mechanism is provided inside the sliding lifting ring 13. The rotating mechanism includes three L-shaped limiting seats 15 and three triangular limiting plates 16. The three L-shaped limiting seats 15 are rotatably connected inside the hollow filter support base 12 and are all located inside the sliding lifting ring 13. The three triangular limiting plates 16 are slidably connected inside the three L-shaped limiting seats 15. A set of second springs 17 is fixedly connected to the outer surface of each of the three triangular limiting plates 16. The three sets of second springs 17 are fixedly connected inside the three L-shaped limiting seats 15. The inner surface of the filter body 15 is fitted with sealing gaskets 18. Three sealing gaskets 18 are respectively fitted onto the outer surfaces of three triangular limiting pieces 16. During the installation of the filter body 19, the U-shaped pull handle 21 is held and pressed downwards onto the filter body 19. The inner wall of the hollow filter support 12 defines the installation trajectory of the filter body 19. During the insertion of the filter body 19, the upper inclined surfaces of the three triangular limiting pieces 16 are pressed together, pushing it back into the L-shaped limiting seat 15. The filter body 19 slides by its lower surface adhering to the upper end of the sliding lifting ring 13 and pressing downwards onto the sliding lifting ring 13. The L-shaped limiting seat 15 rotates within the hollow filter support 12 and passes through a large-sized hole in the sliding lifting ring 13 on its lower surface. 15 is simply set in the inner hole of the sliding lifting ring 13. When the sliding lifting ring 13 rises and falls, it will press the L-shaped limiting seat 15 against the surface of the hole, thus squeezing it to rotate. The descent of the sliding lifting ring 13 synchronously pulls the three L-shaped limiting seats 15 to rotate and adhere to the surface of the filter body 19. After the three L-shaped limiting seats 15 and the surface of the filter body 19 are in contact, the three triangular limiting pieces 16 are no longer obstructed. At this time, the second spring 17 pushes the three triangular limiting pieces 16 to slide out onto the upper surface of the filter body 19. The weight of the filter body 19 itself always pushes the sliding lifting ring 13 downward to retract, thus completing the installation and positioning of the filter body 19. When disassembling the filter body 19, the operator pulls the filter body 19 upward to slide it.At this time, the surface of the filter body 19 is pressed against the inclined surface of the lower end of the triangular limiting piece 16, causing it to loosen its restriction on the upper end of the filter body 19. During the pulling process, the first spring 14 will reset and push the sliding lifting ring 13 upward to slide. While pushing the three L-shaped limiting seats 15 outward to loosen their contact with the filter body 19, the first spring 14 lifts the filter body 19 upward to assist in the removal process. Through the elastic contact and restriction of the L-shaped limiting seats 15 and the triangular limiting piece 16, the disassembly and removal operation does not require the sequential tightening of bolts, making it more efficient and faster. When the triangular limiting piece 16 is pressed and slid, it contacts the surface of the sealing gasket 18. The sealing gasket 18 is made of rubber, which increases the contact friction with the triangular limiting piece 16, thereby improving the stability of the position of the triangular limiting piece 16 and preventing uncontrolled retraction during the filtration process. During the filtration process, the sealing gasket 18 ensures the sealing within the L-shaped limiting seat 15.

[0031] The filter cartridge 11 contains a filter screen body 19, which is located at the upper end of the sliding lifting ring 13. Three L-shaped limiting seats 15 and three triangular limiting pieces 16 are all in contact with the outer surface of the filter screen body 19. A U-shaped pull handle 21 is fixedly connected to the upper end of the filter screen body 19. By holding the surface of the U-shaped pull handle 21, the filter screen body 19 is placed inside the filter cartridge 11. The filter cartridge top cover 22 is placed on the upper end of the filter cartridge 11. By screwing the T-shaped external thread rod 24, it is rotated to the filter cartridge position. Inside the top cover 22, a locking nut 25 is screwed onto the outer surface of the T-shaped external thread rod 24. The locking nut 25 is used to tighten and fix the surface of the filter cartridge top cover 22. Flange connecting pipes are provided on both sides of the filter cartridge 11. The flange pipe at the upper end of one side is used for feeding, and the flange pipe at the lower end of the other side is used for discharging the filtered liquid and transporting it to the subsequent production process. The liquid material in the filter cartridge 11 is filtered through the fine mesh in the filter screen body 19. The filter screen body 19 is a filter cartridge type filter screen.

[0032] A filter cartridge top cover 22 is provided at the upper end of the filter cartridge 11. A support 23 is fixedly connected to the outer surface of the filter cartridge 11. A T-shaped external thread rod 24 is rotatably connected inside the support 23. A locking nut 25 is threadedly connected to the outer surface of the T-shaped external thread rod 24. The locking nut 25 fits against the outer surface of the filter cartridge top cover 22. A cleaning motor 26 is fixedly connected to the upper end of the filter cartridge top cover 22. A cleaning brush rod 27 is provided at the lower end of the cleaning motor 26. The cleaning brush rod 27 is rotatably connected inside the filter cartridge 11 and the filter screen body 19. When filtering is performed, the cleaning motor 26 installed at the upper end of the filter cartridge top cover 22 can be started. The output shaft of the cleaning motor 26 drives the cleaning brush rod 27 to rotate. Bristles are installed on both sides of the cleaning brush rod 27. The rotating bristles clean the screening mesh of the filter screen body 19 by roller brushing, thereby avoiding mesh blockage and ensuring the screening effect of the filter screen body 19.

[0033] To address the problems existing in the prior art, this utility model provides a filtration device that facilitates filter replacement. When disassembling the filter body 19, the operator pulls the filter body 19 upwards to slide it. At this time, the surface of the filter body 19 presses against the inclined surface of the lower end of the triangular limiting piece 16, causing it to loosen its restriction on the upper end of the filter body 19. During the pulling process, the first spring 14 will reset and push the sliding lifting ring 13 upwards to slide. While pushing the three L-shaped limiting seats 15 outwards to loosen their contact with the filter body 19, the first spring 14 lifts the filter body 19 upwards to assist in the removal process. Through the elastic contact and restriction of the L-shaped limiting seats 15 and the triangular limiting piece 16, the disassembly and removal operation does not require the sequential tightening of bolts, making it more efficient and faster.

[0034] Working principle:

[0035] First, hold the U-shaped pull handle 21 and place the filter body 19 inside the filter cylinder 11. Place the filter cylinder top cover 22 on the top of the filter cylinder 11. Rotate the T-shaped external thread rod 24 to make it inside the filter cylinder top cover 22. Tighten the locking nut 25 on the outer surface of the T-shaped external thread rod 24 to secure the filter cylinder top cover 22. The filter cylinder 11 has flange connecting pipes on both sides. The upper flange on one side is used for feeding, and the lower flange on the other side is used for discharging filtered material. The liquid is filtered through the fine mesh of the filter body 19 and then transported to the subsequent production stage. The filter body 19 is a cartridge filter. When filtering, the cleaning motor 26 installed on the top of the filter body 22 can be started. The output shaft of the cleaning motor 26 drives the cleaning brush rod 27 to rotate. The cleaning brush rod 27 is equipped with bristles on both sides. The rotating bristles clean the screening mesh of the filter body 19 by roller brushing, thereby avoiding mesh blockage and ensuring the screening effect of the filter body 19.

[0036] The second step involves installing the filter body 19. Holding the U-shaped pull handle 21, press the filter body 19 downwards. The inner wall of the hollow filter support 12 defines the installation trajectory of the filter body 19. During insertion, the upper inclined surfaces of the three triangular limiting pieces 16 are pushed back into the L-shaped limiting seat 15. The filter body 19 then slides by adhering to the upper end of the sliding lifting ring 13 via its lower surface and pressing down on the sliding lifting ring 13. The L-shaped limiting seat 15 rotates within the hollow filter support 12 and is fitted into the sliding lifting ring 13 via its lower surface. The large-sized holes and L-shaped limiting seats 15 are simply set inside the holes of the sliding lifting ring 13. When the sliding lifting ring 13 rises and falls, it will press the L-shaped limiting seats 15 against the surface of the holes, thus squeezing them to rotate. The descent of the sliding lifting ring 13 synchronously pulls the three L-shaped limiting seats 15 to rotate and adhere to the surface of the filter body 19. After the three L-shaped limiting seats 15 and the surface of the filter body 19 are in contact, the three triangular limiting pieces 16 are no longer obstructed. At this time, the second spring 17 pushes the three triangular limiting pieces 16 to slide out onto the upper surface of the filter body 19. The weight of the filter body 19 itself always pushes downwards. The sliding lifting ring 13 retracts upon contact, thus completing the installation and positioning of the filter body 19. When disassembling the filter body 19, the operator pulls it upwards, causing the surface of the filter body 19 to press against the lower inclined surface of the triangular limiting plate 16, releasing it from its limiting position on the upper end of the filter body 19. During this pulling process, the first spring 14 resets and pushes the sliding lifting ring 13 upwards, simultaneously pushing the three L-shaped limiting seats 15 outwards to loosen their contact with the filter body 19. At the same time, the first spring 14 lifts the filter body 19 upwards to assist in its removal. The L-shaped limiting seat 15 and the triangular limiting piece 16 elastically fit and limit the movement, eliminating the need to tighten bolts sequentially during disassembly and removal, making the process more efficient and faster. When the triangular limiting piece 16 is squeezed and slid, it adheres to the surface of the sealing gasket 18. The sealing gasket 18 is made of rubber, which increases the friction between it and the triangular limiting piece 16, thereby improving the stability of the triangular limiting piece 16's position and preventing it from retracting uncontrollably during the filtration process. The sealing gasket 18 ensures the sealing within the L-shaped limiting seat 15 during the filtration process.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A filtration device for easy filter replacement, comprising a filter cylinder (11), wherein a hollow filter support (12) is fixedly connected inside the filter cylinder (11), characterized in that, The hollow filter support (12) is slidably connected to a sliding lifting ring (13). A first spring (14) is fixedly connected to one end of the outer surfaces of the hollow filter support (12) and the sliding lifting ring (13) that are close to each other. The sliding lifting ring (13) is provided with a centering and positioning rotation mechanism. The rotation mechanism includes three L-shaped limiting seats (15) and three triangular limiting pieces (16). The three L-shaped limiting seats (15) are rotatably connected inside the hollow filter support (12). The three L-shaped limiting seats (15) are all set inside the sliding lifting ring (13). The three triangular limiting pieces (16) are slidably connected inside the three L-shaped limiting seats (15). Among them, a set of second springs (17) are fixedly connected to the outer surface of each of the three triangular limiting plates (16), and the three sets of second springs (17) are respectively fixedly connected inside the three L-shaped limiting seats (15).

2. The filter device for easy filter replacement as described in claim 1, characterized in that, The inner surfaces of the three L-shaped limiting seats (15) are all fitted with sealing gaskets (18); The three sealing gaskets (18) are respectively fitted onto the outer surface of the three triangular limiting pieces (16).

3. The filter device for easy filter replacement as described in claim 2, characterized in that, The filter cylinder (11) is provided with a filter screen body (19) inside; The filter body (19) is located at the upper end of the sliding lifting ring (13).

4. The filter device for easy filter replacement as described in claim 3, characterized in that, The three L-shaped limiting seats (15) and the three triangular limiting pieces (16) are all in contact with the outer surface of the filter body (19); The filter body (19) is fixedly connected to a U-shaped pull handle (21) at its upper end.

5. A filter device for easy filter replacement as described in claim 4, characterized in that, The filter cartridge (11) is provided with a filter cartridge top cover (22) at its upper end; The filter cartridge (11) is fixedly connected to a support (23) on its outer surface.

6. A filter device for easy filter replacement as described in claim 5, characterized in that, The support (23) is rotatably connected to a T-shaped external thread rod (24); The T-shaped external thread rod (24) has a locking nut (25) threaded on its outer surface.

7. A filter device for easy filter replacement as described in claim 6, characterized in that, The locking nut (25) and the outer surface of the filter cartridge top cover (22) are in contact; The filter cartridge top cover (22) is fixedly connected to a cleaning motor (26) at its upper end.

8. A filter device for easy filter replacement as described in claim 7, characterized in that, The cleaning motor (26) is provided with a cleaning brush rod (27) at its lower end; The cleaning brush rod (27) is rotatably connected inside the filter cylinder (11) and the filter body (19).

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