A high efficiency filter with quick-change filter screen

Abstract

The utility model relates to filter technical field discloses a kind of high-efficiency filters of quick-replaceable filter screen, including filter cartridge and cylinder cover, the lower side of the filter cartridge is connected with inlet pipe, and the top of filter cartridge is connected with upper pipe, the side of the upper pipe is connected with drain pipe, the inner wall of the filter cartridge is provided with matching annular stop piece, the annular stop piece is penetrated and slidingly connected with vertical shaft, the upper end of the vertical shaft is fixedly installed with the top inner wall of filter cartridge, and the lower end of vertical shaft is fixedly installed with disc, spring one is sleeved on the disc, the upper and lower ends of spring one are respectively connected with the top inner wall of filter cartridge and the top of annular stop piece, the inside of the upper pipe is provided with matching stop ball.The utility model facilitates the installation and disassembly of cylinder cover, so that the cylindrical filter screen can be quickly replaced, and the filter realizes the automatic cut-off function after disassembling the cylinder cover, and there is no liquid leakage when replacing the cylindrical filter screen.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a high-efficiency filter with a quickly replaceable filter screen. Background Technology

[0002] Filters are an indispensable device in pipelines that transport media. A filter is a device used to remove impurities or particles from fluids. Since the transported media may contain impurities, which can affect the operation of equipment, filters can protect equipment (such as pumps, valves, and compressors) from damage by impurities and ensure the cleanliness of the fluid.

[0003] The published patent document CN222239158U discloses a filter with a replaceable screen. This patent uses a filter screen, locking block, limiting groove, limiting post, locking hole, locking pin, limiting block, groove, return spring, and baffle. Pulling the locking pin moves the baffle along the sliding groove, simultaneously compressing the return spring. When the slider moves to one end of the sliding groove, rotating the locking pin moves the slider along the annular guide rail, thus limiting the locking pin and disengaging it from the locking hole, releasing the fixing post, removing the fixing block, and then removing the filter screen that was locked on the fixing ring. Finally, the locking block for the new filter screen engages with the locking groove in the fixing ring, and the limiting post engages with the limiting groove, thus completing the filter screen replacement. This reduces filtration costs and ensures the filter's filtration effect. However, the aforementioned patent lacks an automatic flow-stopping function during filter screen replacement, making leakage prone to occur. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency filter with a quick-replaceable filter screen, thus solving the problems mentioned in the background art.

[0005] This application provides a high-efficiency filter with a quickly replaceable filter screen, including a filter cartridge and a cartridge cover. A liquid inlet pipe is connected to the lower part of one side of the filter cartridge, and an upper pipe is connected to the top of the filter cartridge. A drain pipe is connected to one side of the upper pipe. A matching annular baffle is provided on the inner wall of the filter cartridge. A vertical shaft is slidably connected through and on the annular baffle. The upper end of the vertical shaft is fixedly installed to the inner wall of the top of the filter cartridge, and a disc is fixedly installed at the lower end of the vertical shaft. A spring is sleeved on the disc, and the upper and lower ends of the spring are respectively connected to the inner wall of the top of the filter cartridge and the top of the annular baffle. A matching ball is provided inside the upper pipe, and a second spring is fixedly connected to the top of the ball. The upper end of the second spring is connected to the inner wall of the top of the upper pipe. A ring is provided above the cartridge cover, and a cylindrical filter screen is fixedly installed between the cartridge cover and the ring. A top rod matching the annular baffle is fixedly installed on the top of the cartridge cover, and a top shaft matching the ball is provided in the middle of the ring.

[0006] Optionally, the lower outer wall of the filter cartridge is provided with an external thread, and the inner wall of the cartridge cover is provided with an internal thread, wherein the external thread and the internal thread are adapted to each other.

[0007] Optionally, the inner part of the cylinder cover is fixedly connected with a lower sealing ring that matches the filter cylinder, and the top of the ring is fixedly connected with an upper sealing ring that matches the filter cylinder.

[0008] Optionally, a number of reinforcing rods are fixedly installed at equal intervals along the outer edge between the cylinder cover and the ring.

[0009] Optionally, four connecting rods are fixedly installed on the inner wall of the ring, and the end of the connecting rod away from the inner wall of the ring is fixedly installed with the top shaft.

[0010] Optionally, one end of the inlet pipe is fixedly connected to flange one, and one end of the outlet pipe is fixedly connected to flange two.

[0011] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0012] 1. The technical solution of this application, through the coordinated use of the cylinder cover, ring, cylindrical filter screen, top rod, annular stop, vertical shaft, disc, spring, top shaft, upper tube, stop ball and spring, enables the filter to achieve automatic flow interception function after the cylinder cover is removed, and there will be no leakage when replacing the cylindrical filter screen. In addition, the cylindrical shape of the filter screen increases the filtration area, thereby improving the filtration efficiency of the filter.

[0013] 2. The technical solution of this application allows the cylinder cover to be easily screwed onto and fixed to the bottom of the filter cylinder via external and internal threads, facilitating the installation and removal of the cylinder cover. This enables quick replacement of the cylindrical filter screen, and the lower and upper sealing rings ensure the airtightness of the filter after the cylindrical filter screen is replaced. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the present invention from the front view.

[0016] Figure 2 This is a schematic diagram of the main structure of the cylindrical cover of this utility model;

[0017] Figure 3 This is a top-view structural diagram of the filter cartridge of this utility model;

[0018] Figure 4 This is a front view of the upper pipe and the drain pipe of this utility model.

[0019] In the diagram: 1. Filter cylinder; 2. Cylinder cover; 3. Inlet pipe; 4. Upper pipe; 5. Drain pipe; 6. Flange 1; 7. Flange 2; 8. External thread; 9. Internal thread; 10. Ring; 11. Cylindrical filter screen; 12. Top rod; 13. Top shaft; 14. Lower sealing ring; 15. Upper sealing ring; 16. Reinforcing rod; 17. Connecting rod; 18. Annular stop; 19. Vertical shaft; 20. Disc; 21. Spring 1; 22. Ball stop; 23. Spring 2. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figure 1-4 This utility model provides a high-efficiency filter with a quickly replaceable filter screen, including a filter cylinder 1 and a cylinder cover 2. A liquid inlet pipe 3 is connected to the lower part of one side of the filter cylinder 1, and an upper pipe 4 is connected to the top of the filter cylinder 1. A drain pipe 5 is connected to one side of the upper pipe 4. A matching annular baffle 18 is provided on the inner wall of the filter cylinder 1. A vertical shaft 19 is slidably connected through the annular baffle 18. The upper end of the vertical shaft 19 is fixedly installed to the inner wall of the top of the filter cylinder 1, and a disc 20 is fixedly installed at the lower end of the vertical shaft 19. A spring 21 is sleeved on the disc 20. The upper and lower ends of spring 21 are respectively connected to the top inner wall of the filter cylinder 1 and the top of the annular baffle 18. The upper tube 4 is provided with a matching baffle ball 22. The top of the baffle ball 22 is fixedly connected to spring 23. The upper end of spring 23 is connected to the top inner wall of the upper tube 4. A ring 10 is provided above the cylinder cover 2. A cylindrical filter screen 11 is fixedly installed between the cylinder cover 2 and the ring 10. A top rod 12 matching the annular baffle 18 is fixedly installed on the top of the cylinder cover 2. A top shaft 13 matching the baffle ball 22 is provided in the middle of the ring 10.

[0022] In this technical solution, when the cover 2 is installed at the bottom of the filter cylinder 1, the top rod 12 presses the compression spring 21 upward and drives the annular stop 18 to move, so that the annular stop 18 is misaligned with the inlet pipe 3. After the top shaft 13 enters the upper pipe 4, it drives the baffle ball 22 to move upward and press the second spring 23, so that the baffle ball 22 is misaligned with the drain pipe 5. This enables the filter to achieve automatic flow interception after the cover 2 is removed, and there will be no leakage when replacing the cylindrical filter screen 11. Moreover, the cylindrical filter screen 11 increases the filtration area, thereby improving the filtration efficiency of the filter.

[0023] In some technical solutions, such as Figure 1-3As shown, the lower outer wall of the filter cylinder 1 is provided with an external thread 8, and the inner wall of the cylinder cover 2 is provided with an internal thread 9. The external thread 8 and the internal thread 9 are compatible.

[0024] In use, the cover 2 can be easily screwed onto and fixed to the bottom of the filter cylinder 1 using the external thread 8 and the internal thread 9, which facilitates the installation and removal of the cover 2 and allows for quick replacement of the cylindrical filter screen 11.

[0025] In some technical solutions, such as Figure 1-2 As shown, the inner part of the cover 2 is fixedly connected with a lower sealing ring 14 that matches the filter cylinder 1, and the top of the ring 10 is fixedly connected with an upper sealing ring 15 that matches the filter cylinder 1.

[0026] In use, the lower sealing ring 14 increases the sealing between the cover 2 and the filter cylinder 1, and the upper sealing ring 15 increases the sealing between the ring 10 and the filter cylinder 1.

[0027] In some technical solutions, such as Figure 2 As shown, several reinforcing rods 16 are fixedly installed at equal intervals along the outer edge between the cylinder cover 2 and the ring 10.

[0028] In use, the reinforcement rod 16 increases the strength of the connection between the cylinder cover 2 and the ring 10.

[0029] In some technical solutions, such as Figure 2 As shown, four connecting rods 17 are fixedly installed on the inner wall of the ring 10, and the end of the connecting rod 17 away from the inner wall of the ring 10 is fixedly installed with the top shaft 13.

[0030] In use, the connecting rod 17 provides a fulcrum for the top shaft 13.

[0031] In some technical solutions, such as Figure 1 and Figure 3 As shown, one end of the inlet pipe 3 is fixedly connected to flange 6, and one end of the outlet pipe 5 is fixedly connected to flange 7.

[0032] In use, the filter can be easily connected to the required filtration channel via flange 6 and flange 7.

[0033] Working principle: During use, the filter is connected to the required filtration channel through flange 6 and flange 7. Then, the cover 2 is easily screwed onto and fixed to the bottom of the filter cylinder 1 through the external thread 8 and internal thread 9. At this time, the top rod 12 presses the compression spring 21 upward and drives the annular stop 18 to move, so that the annular stop 18 is misaligned with the inlet pipe 3. After the top shaft 13 enters the upper pipe 4, it drives the baffle ball 22 to move upward and press the spring 23, so that the baffle ball 22 is misaligned with the drain pipe 5. This enables the filter to achieve the automatic interception function after the cover 2 is removed. In addition, the cylindrical filter screen 11 increases the filtration area, thereby improving the filtration efficiency of the filter.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-efficiency filter with a quickly replaceable filter screen, comprising a filter cartridge (1) and a cartridge cover (2), characterized in that: The filter cylinder (1) has an inlet pipe (3) connected to the lower part of one side, and an upper pipe (4) connected to the top of the filter cylinder (1). A drain pipe (5) is connected to one side of the upper pipe (4). A matching annular baffle (18) is provided on the inner wall of the filter cylinder (1). A vertical shaft (19) is slidably connected through the annular baffle (18). The upper end of the vertical shaft (19) is fixedly installed to the inner wall of the top of the filter cylinder (1), and a disc (20) is fixedly installed at the lower end of the vertical shaft (19). A spring (21) is sleeved on the disc (20). The upper and lower ends of the spring (21) are respectively connected to the top of the filter cylinder (1). The inner wall of the tube is connected to the top of the annular baffle (18). The upper tube (4) is provided with a matching baffle ball (22). The top of the baffle ball (22) is fixedly connected to a spring (23). The upper end of the spring (23) is connected to the top inner wall of the upper tube (4). A ring (10) is provided above the cover (2). A cylindrical filter screen (11) is fixedly installed between the cover (2) and the ring (10). A top rod (12) matching the annular baffle (18) is fixedly installed on the top of the cover (2). A top shaft (13) matching the baffle ball (22) is provided in the middle of the ring (10).

2. The high-efficiency filter with a quickly replaceable filter screen according to claim 1, characterized in that, The lower outer wall of the filter cylinder (1) is provided with an external thread (8), and the inner wall of the cylinder cover (2) is provided with an internal thread (9). The external thread (8) and the internal thread (9) are compatible.

3. A high-efficiency filter with a quickly replaceable filter screen according to claim 2, characterized in that, The inner part of the cover (2) is fixedly connected with a lower sealing ring (14) that matches the filter cylinder (1), and the top of the ring (10) is fixedly connected with an upper sealing ring (15) that matches the filter cylinder (1).

4. A high-efficiency filter with a quickly replaceable filter screen according to claim 1, characterized in that, Several reinforcing rods (16) are fixedly installed at equal intervals along the outer edge between the cylinder cover (2) and the ring (10).

5. A high-efficiency filter with a quickly replaceable filter screen according to claim 1, characterized in that, Four connecting rods (17) are fixedly installed on the inner wall of the ring (10), and the end of the connecting rod (17) away from the inner wall of the ring (10) is fixedly installed with the top shaft (13).

6. A high-efficiency filter with a quickly replaceable filter screen according to claim 1, characterized in that, One end of the inlet pipe (3) is fixedly connected to flange one (6), and one end of the outlet pipe (5) is fixedly connected to flange two (7).

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