Filter valve convenient to open and close

Abstract

The utility model relates to the technical field of valve design, and discloses a filter valve convenient to open and close, which comprises a valve body, a water inlet end positioned on one side of the valve body, a water outlet end positioned on the other side of the valve body and a filter screen arranged in the valve body, an accommodating cavity for accommodating filtered impurities is integrally arranged at the lower part of the valve body, and an end cover is arranged at the lower end of the accommodating cavity. A drain outlet is formed in the center of the end cover, a plug used for covering the upper end of the drain outlet is arranged in the containing cavity, a connecting rod penetrating through the drain outlet is arranged on the lower side of the plug, the diameter of the section of the connecting rod is smaller than that of the section of the drain outlet, a rotary knob is arranged at the lower end of the connecting rod, a connecting arm is arranged in the containing cavity, and an inner threaded sleeve is arranged at the end of the connecting arm. The upper end of the plug is provided with a threaded shaft in threaded connection with the interior of the inner threaded sleeve. Compared with the prior art that the filter screen needs to be disassembled every time, the scheme only needs to rotate the knob, and finally, impurities in the valve body can be conveniently cleaned.

Description

Technical Field

[0001] This utility model belongs to the field of valve design technology, and specifically relates to a filter valve that is easy to open and close. Background Technology

[0002] A filter valve, also known as a filter, is a device for pre-filtration. It is an essential filtration equipment for hydraulic control valves and precision mechanical products that are prone to clogging.

[0003] Currently, Chinese patent publication number CN221780026U, published on September 27, 2024, discloses a filter valve, including a main pipe. An inlet pipe is located on the top right side of the main pipe, and an outlet pipe is located on the bottom left side of the main pipe. A filter screen is installed inside the main pipe near the bottom, and a mounting base is located at the bottom of the filter screen. The mounting base has movable holes on its surface, and a base is located below the mounting base. A triangular plate is located at the top center of the base, and a sliding rod is fixedly connected to the side of the triangular plate. A spring is sleeved on the surface of the sliding rod, and a moving block is located at the front end of the spring. A clamping rod is fixedly connected to the top of the moving block, and a knob is located at the bottom of the clamping rod. After closing the main pipe, the mounting base, along with the filter screen, is removed from the main pipe, and the bottom knob is turned using a tool.

[0004] This type of filter valve uses a sliding rod on a triangular plate to move a moving block, allowing the clamping rod to move in the movable hole to release the filter screen, which can then be removed for easy cleaning and replacement.

[0005] Since the impurities filtered out by the filter are stored inside the filter, the filter needs to be removed every time the impurities need to be cleaned, making the cleaning process time-consuming and laborious. Utility Model Content

[0006] The purpose of this invention is to provide a filter valve that is easy to open and close, which facilitates the convenient cleaning of impurities inside the valve body.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a filter valve that is easy to open and close, comprising a valve body, an inlet end located on one side of the valve body, an outlet end located on the other side of the valve body, and a filter screen disposed within the valve body. The lower part of the valve body is integrally provided with a receiving cavity for accommodating filtered impurities. An end cap is provided at the lower end of the receiving cavity, and a drain port is provided at the center of the end cap. A plug for covering the upper end of the drain port is provided inside the receiving cavity. A connecting rod passing through the drain port and having a cross-sectional diameter smaller than that of the drain port is provided on the lower side of the plug. A knob is provided at the lower end of the connecting rod. A connecting arm is provided inside the receiving cavity, and an internal threaded sleeve is provided at the end of the connecting arm. A threaded shaft threadedly connected to the internal threaded sleeve is provided at the upper end of the plug.

[0008] A further feature of this invention is that a rubber sealing ring is provided on the periphery of the lower end face of the plug.

[0009] A further feature of this invention is that the mesh surface of the filter screen is hemispherical and the lower side is located near the water inlet.

[0010] A further feature of this invention is that a retaining ring is provided on the periphery of the filter screen, and an annular groove for the retaining ring to be inserted is provided on the inner wall of the valve body.

[0011] A further feature of this invention is that: an arc-shaped arm is provided on the lower side of the filter screen, and bristles that abut against the outer wall of the filter screen are provided on the inner wall of the arc-shaped arm. A connecting post is provided at the lower end of the arc-shaped arm, and the lower end of the connecting post is circumferentially fixedly connected and axially slidingly connected to the upper end of the threaded shaft.

[0012] A further feature of this invention is that: a spline shaft is provided at the upper end of the threaded shaft, a spline sleeve is provided at the lower end of the connecting column for the upper end of the spline shaft to be inserted and used in conjunction with the spline shaft, a fixing arm is provided on the inner wall of the receiving cavity, a connecting sleeve is provided at the end of the fixing arm and sleeved on the outside of the spline sleeve, and a limiting ring is provided at both the upper and lower ends of the spline sleeve to abut against the end face of the connecting sleeve.

[0013] A further feature of this invention is that an external threaded ring is provided on the upper side of the end cap, and an internal threaded surface for threaded connection of the external threaded ring is provided on the inner wall of the lower end of the receiving cavity.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. Impurities filtered by the filter screen inside the valve body can be collected in the collection chamber at the lower end of the valve body. When it is necessary to clean the impurities in the collection chamber regularly, simply turn the knob to rotate the connecting rod, causing the threaded shaft to move upward in the internal threaded sleeve. This will then move the plug away from the upper end of the drain port. Under the pressure inside the valve body, the impurities can then be discharged downward from the drain port. After the impurities have been discharged, turn the knob in the opposite direction to re-seal the drain port. Compared with the existing technology that requires disassembling the filter screen each time, this solution only requires turning the knob, thus achieving a more convenient way to clean the impurities inside the valve body.

[0016] 2. The rubber sealing ring provided on the periphery of the lower end face of the plug can help the plug to provide a stable seal to the drain outlet, reducing the possibility of leakage.

[0017] 3. The filter screen is hemispherical with the lower side close to the water inlet. The water flow at the water inlet acts on the filter screen surface, thus cleaning the impurities adhering to the filter screen surface through the water flow at the water inlet.

[0018] 4. By utilizing the retaining rings set on the periphery of the filter screen and the annular grooves opened on the inner wall of the valve body, the filter screen can be embedded in the annular grooves using the retaining rings, thereby achieving a stable connection of the filter screen in the valve body;

[0019] 5. The lower end of the connecting column is circumferentially fixed and axially slidingly connected to the upper end of the threaded shaft. When the threaded shaft rotates, the connecting column can drive the arc arm to rotate. Since the bristles on the arc arm abut against the outer wall of the filter screen, the cleaning of the impurities adhering to the surface of the filter screen can be completed by rotating the knob at the same time, avoiding the filter screen from becoming clogged due to excessive impurities.

[0020] 6. The threaded shaft is embedded in the spline sleeve at the lower end of the connecting column by the upper end of the spline shaft. The rotation of the threaded shaft can drive the connecting column to rotate. At the same time, the threaded shaft can also move up and down in the spline sleeve. At this time, the lower end of the connecting column can be circumferentially fixed and axially slidingly connected to the upper end of the threaded shaft.

[0021] 7. The end cap is connected to the internal thread surface at the lower end of the receiving cavity by an external threaded ring thread, thus enabling the end cap to be detachably connected to the lower end of the receiving cavity. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional view of the structure of this utility model, in which the plug is sealed on the drain outlet;

[0024] Figure 2 This is a cross-sectional view of the structure of this utility model, in which the plug is removed from the drain outlet;

[0025] Figure 3 This is a partially enlarged view of the connection relationship between the spline shaft and the connecting column in this utility model.

[0026] In the diagram, 1. Valve body; 11. Inlet end; 12. Outlet end; 13. Receiving cavity; 131. Connecting arm; 132. Internal threaded sleeve; 133. Fixing arm; 134. Connecting sleeve; 14. Ring groove; 15. Internal threaded surface; 2. Filter screen; 21. Snap ring; 3. End cap; 31. Drain outlet; 32. External threaded ring; 4. Plug; 41. Connecting rod; 411. Knob; 42. Threaded shaft; 421. Splined shaft; 43. Rubber sealing ring; 5. Arc arm; 51. Brush bristles; 52. Connecting column; 521. Splined sleeve; 522. Limiting ring. Detailed Implementation

[0027] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] A filter valve that is easy to open and close, see reference. Figure 1 The easy-to-open and close filter valve includes a valve body 1, an inlet end 11 located on one side of the valve body 1, an outlet end 12 located on the other side of the valve body 1, and a filter screen 2 disposed inside the valve body 1. The lower part of the valve body 1 is integrally provided with a receiving cavity 13 for accommodating filtered impurities, and an end cap 3 is provided at the lower end of the receiving cavity 13. At the same time, an external threaded ring 32 is integrally provided on the upper side of the end cap 3, and an internal threaded surface 15 is provided on the inner wall of the lower end of the receiving cavity 13 for threaded connection of the external threaded ring 32.

[0029] Reference Figure 1 , Figure 2 The end cap 3 has a drain port 31 at its center, and the receiving cavity 13 has a plug 4 for covering the upper end of the drain port 31. A rubber sealing ring 43 is bonded and fixed to the periphery of the lower end face of the plug 4. A connecting rod 41 with a cross-sectional diameter smaller than that of the drain port 31 is welded to the lower side of the plug 4. A knob 411 is welded to the lower end of the connecting rod 41. A connecting arm 131 is welded to the receiving cavity 13. An internal threaded sleeve 132 is welded to the end of the connecting arm 131. A threaded shaft 42 with a threaded connection in the internal threaded sleeve 132 is welded to the upper end of the plug 4. When the knob 411 is rotated, the plug 4 moves upward to open the valve body 1. When the knob 411 is rotated, the plug 4 moves downward to close the valve body 1.

[0030] Reference Figure 1 , Figure 3The filter screen 2 has a hemispherical mesh surface, with the lower side near the water inlet 11. A retaining ring 21 is welded to the periphery of the filter screen 2, and an annular groove 14 for the retaining ring 21 to be inserted is formed on the inner wall of the valve body 1. Simultaneously, an arc-shaped arm 5 is provided on the lower side of the filter screen 2, and bristles 51 are bonded and fixed to the inner wall of the arc-shaped arm 5, abutting against the outer wall of the filter screen 2. A connecting post 52 extending vertically downwards is welded to the lower end of the arc-shaped arm 5, and the lower end of the connecting post 52 is circumferentially fixed and axially slidingly connected to... The upper end of the threaded shaft 42 is welded with a spline shaft 421, and the lower end of the connecting column 52 is welded with a spline sleeve 521 for the upper end of the spline shaft 421 to be inserted and used in conjunction with the spline shaft 421. A fixing arm 133 is welded on the inner wall of the receiving cavity 13, and a connecting sleeve 134 is welded to the end of the fixing arm 133 and sleeved on the outside of the spline sleeve 521. At the same time, both the upper and lower ends of the spline sleeve 521 are integrally provided with a limiting ring 522 that abuts against the end face of the connecting sleeve 134.

[0031] Principle: Impurities filtered by the filter screen 2 inside the valve body 1 can be collected in the receiving cavity 13 at the lower end of the valve body 1. When it is necessary to clean the impurities in the receiving cavity 13 periodically, simply rotate the connecting rod 41 by turning the knob 411, so that the threaded shaft 42 moves upward in the internal threaded sleeve 132, which will then drive the plug 4 to move away from the upper end of the drain port 31. Then, under the pressure inside the valve body 1, the impurities can be discharged downward from the drain port 31. After the impurities have been discharged, turn the knob 411 in the opposite direction, so that the plug 4 can be sealed on the drain port 31 again. Compared with the existing technology that requires disassembling the filter screen 2 every time, this solution only requires turning the knob 411, which can ultimately achieve a more convenient cleaning of the impurities inside the valve body 1.

[0032] The lower end of the connecting column 52 is circumferentially fixed and axially slidably connected to the upper end of the threaded shaft 42. When the threaded shaft 42 rotates, it can drive the arc-shaped arm 5 to rotate through the connecting column 52. Since the bristles 51 on the arc-shaped arm 5 abut against the outer wall of the filter screen 2, the cleaning of the impurities adhering to the surface of the filter screen 2 can be completed by rotating the knob 411, thus avoiding the filter screen 2 from becoming clogged due to excessive adhering impurities.

Claims

1. A filter valve with easy opening and closing, comprising a valve body (1), a water inlet end (11) on one side of the valve body (1), a water outlet end (12) on the other side of the valve body (1), and a filter screen (2) arranged in the valve body (1), characterized in that: The lower part of the valve body (1) is integrally provided with a receiving cavity (13) for containing the filtered impurities, the lower end of the receiving cavity (13) is provided with an end cover (3), the center of the end cover (3) is provided with a blowdown port (31), the receiving cavity (13) is provided with a plug (4) covering the upper end of the blowdown port (31), the lower side of the plug (4) is provided with a connecting rod (41) penetrating through the blowdown port (31) and having a cross-sectional diameter smaller than that of the blowdown port (31), the lower end of the connecting rod (41) is provided with a knob (411), the receiving cavity (13) is provided with a connecting arm (131), the end of the connecting arm (131) is provided with an internally threaded sleeve (132), the upper end of the plug (4) is provided with a threaded shaft (42) threadedly connected in the internally threaded sleeve (132).

2. The filter valve of claim 1, wherein: The peripheral side of the lower end surface of the plug (4) is provided with a rubber sealing ring (43).

3. The filter valve of claim 1, wherein: The mesh surface of the filter screen (2) is hemispherical and the lower side is close to the water inlet end (11).

4. The filter valve of claim 3, wherein: The peripheral side of the filter screen (2) is provided with a snap ring (21), and the inner wall of the peripheral side of the valve body (1) is provided with a ring groove (14) for embedding the snap ring (21).

5. The filter valve of claim 3, wherein: The lower side of the filter screen (2) is provided with an arc-shaped arm (5), the inner wall of the arc-shaped arm (5) is provided with a brush (51) abutting against the outer wall of the filter screen (2), and the lower end of the arc-shaped arm (5) is provided with a connecting column (52) axially slidingly connected with the upper end of the threaded shaft (42).

6. A filter valve for ease of opening and closing according to claim 5, characterized in that: The upper end of the threaded shaft (42) is provided with a spline shaft (421), the lower end of the connecting column (52) is provided with a spline sleeve (521) for embedding the upper end of the spline shaft (421) and cooperating with the spline shaft (421), the inner wall of the receiving cavity (13) is provided with a fixing arm (133), the end of the fixing arm (133) is provided with a connecting sleeve (134) sleeved on the outer side of the spline sleeve (521), and the upper and lower ends of the spline sleeve (521) are both provided with a limiting ring (522) abutting against the end surface of the connecting sleeve (134).

7. The filter valve of claim 1, wherein: The upper side of the end cover (3) is provided with an externally threaded ring (32), and the peripheral inner wall of the lower end of the receiving cavity (13) is provided with an internally threaded surface (15) for threadedly connecting the externally threaded ring (32).

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