Ball valve with filter screen

Abstract

The ball valve with the filter screen comprises a valve body, a valve cover assembly, a ball body and a valve rod, a containing cavity is formed in the middle section of the valve body, and the containing cavity is used for installing the valve cover assembly, the ball body and the valve rod; the two ends of the valve body are provided with a water inlet channel and a water outlet channel which communicate with the containing cavity. The device further comprises a filter screen piece and a leakage structure, the leakage structure comprises a leakage hole and an abutting piece, and the filter screen piece is slidably connected into the water inlet channel through the abutting piece in the water flow direction; the leakage hole is formed in the pipe wall of the water inlet channel in a penetrating mode, and the abutting piece is used for pushing the filter screen to always shield the leakage hole within the normal blocking range. When the filter screen is gradually blocked, the pressure intensity of water flow is gradually increased, the filter screen is gradually pushed to move towards one side of the containing cavity, and when the blocking degree of the filter screen exceeds a normal range, the filter screen is excessively pushed to expose the leakage hole, and the water flow flows out of the water inlet channel along the leakage hole, so that an operator knows that the filter screen is blocked beyond the normal range; and a reminding effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve with a filter screen. Background Technology

[0002] A ball valve is a type of valve widely used in pipeline systems to control the flow of media. It primarily opens and closes by rotating a ball within the valve core. The ball has a through-hole at its center. When the ball rotates and aligns the through-hole with the fluid passage, the valve is open, allowing unobstructed flow of the media. When the ball rotates and the through-hole is perpendicular to the fluid passage, the valve is closed, cutting off fluid flow. Ball valves are widely used in various fields such as petroleum, natural gas, chemical, papermaking, pharmaceuticals, and water treatment due to their advantages including ease of operation, good sealing performance, small size, light weight, convenient maintenance, and applicability to a wide range of working pressures and temperatures.

[0003] In ball valve applications, a common practice is to install a filter screen at the inlet port to protect the internal components from damage. However, when transmitting fluids containing impurities for extended periods, the filter screen is easily clogged by these impurities, which can adversely affect the inlet flow rate and pressure of the ball valve. Utility Model Content

[0004] This application provides a ball valve with a filter screen, which can alert the operator when the filter screen becomes clogged.

[0005] The ball valve with a filter screen provided in this application adopts the following technical solution:

[0006] A ball valve with a filter screen includes a valve body, a valve cover assembly, a ball, and a valve stem. The valve body has a receiving cavity in its middle section for mounting the valve cover assembly, ball, and valve stem. The valve body has inlet and outlet channels at both ends, communicating with the receiving cavity. It also includes a filter screen and a leakage structure. The leakage structure includes a leakage hole and a contact member. The filter screen is slidably connected to the inlet channel along the water flow direction via the contact member. The leakage hole is formed through the wall of the inlet channel, and the contact member is used to push the filter screen to always block the leakage hole within the normal clogging range.

[0007] With the above technical solution, as the filter screen gradually becomes clogged, the water pressure gradually increases, gradually pushing the filter screen towards the receiving cavity. When the degree of clogging exceeds the normal range, the filter screen is excessively pushed, causing the leakage hole to be exposed. Water flows out of the inlet channel through the leakage hole, informing the operator that the filter screen has become clogged beyond the normal range, thus serving as a reminder.

[0008] Preferably, the filter element includes a mesh cover and a first movable ring, the first movable ring being fixed on the circumferential edge of the mesh cover, and the abutment being mounted on the first movable ring.

[0009] The above technical solution allows the connecting part to be installed on the movable ring for easy disassembly and cleaning of the filter screen.

[0010] Preferably, the abutment includes a spring and a second movable ring. An annular groove is formed on the inner wall of the water inlet channel. Both the first and second movable rings slide within the annular groove. The first movable ring is threaded onto the second movable ring. The spring is fixed parallel to the water flow direction to the bottom wall of the second movable ring and the annular groove. The spring is always kept in a stretched state.

[0011] Through the above technical solution, the spring is used to drive the abutment ring, which is abutted against the movable ring, to abut against the tail end of the connector, so that when the filter screen is within the normal clogging range, the filter screen will not move and expose the warning hole.

[0012] Preferably, the inner diameters of the first and second movable rings are the same as the diameter of the water inlet channel.

[0013] With the above technical solution, the inner diameters of the first and second movable rings are the same as the diameter of the water inlet channel, thereby avoiding the first and second movable rings from blocking the water inlet channel.

[0014] Preferably, it also includes a rotating shaft, multiple detection plates, and a counting device. A through hole is provided in the water outlet channel. One end of the rotating shaft passes through the through hole and rotates perpendicular to the water flow direction in the water outlet channel. Multiple detection plates are installed on the rotating shaft. The counting device is installed on the outer wall of the water outlet channel and is used to record the number of rotations of the rotating shaft.

[0015] The above technical solution uses water flow through the ball to drive the detection plate to rotate, which in turn drives the rotating shaft to rotate. The counting device records the number of rotations and time of the shaft, and then uses its built-in processor to calculate and output the flow rate through the water outlet channel. This allows operators to understand the flow rate through the water outlet channel and easily control when to open and close the ball valve.

[0016] Preferably, a corresponding groove is provided on the inner side wall of the water outlet channel, and the corresponding groove is arranged opposite to the through hole; a fixing block is sleeved on one end of the rotating shaft that passes through the through hole, and the rotating shaft is rotatably connected in the fixing block, which is used to be inserted into the corresponding groove.

[0017] The above technical solution enables both ends of the rotating shaft to utilize the inner wall of the water outlet channel for load-bearing, thereby reducing the impact of water flow on the rotating shaft and extending its service life.

[0018] Preferably, a sealing post is provided in the through hole, and the sealing post has a clearance groove for the rotating shaft to pass through; the contact surfaces of the fixing block and the sealing post with the rotating shaft are all coated with polytetrafluoroethylene.

[0019] Through the above technical solution, the sealing column is used to prevent water leakage. At the same time, the contact surfaces of the fixing block, the sealing column and the rotating shaft are coated with polytetrafluoroethylene coating to reduce the friction between the rotating shaft and the fixing block and the sealing column, thereby improving the accuracy of the counting device.

[0020] The main technical effects of this utility model are reflected in the following aspects:

[0021] 1. This utility model, by setting a leakage structure, ensures that when the filter screen becomes excessively clogged beyond the normal range, the filter screen is pushed excessively, causing the leakage hole to be exposed. Water flows out of the inlet channel through the leakage hole, informing the operator that the filter screen is clogged beyond the normal range, thus serving as a reminder.

[0022] 2. This utility model facilitates the disassembly and cleaning of the filter screen by utilizing the threaded connection between the first and second movable rings;

[0023] 3. This utility model uses a rotating shaft and other detection devices to detect the flow rate of the water outlet channel, allowing operators to intuitively understand the flow rate through the water outlet channel and thus easily control when to open or close the ball valve. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0025] Figure 2 As described in the embodiments of this application, along Figure 1 A cross-sectional schematic diagram of section line AA in the middle;

[0026] Figure 3 Examples of embodiments in this application Figure 2 Enlarged diagram of point B in the middle.

[0027] Reference numerals: 1. Valve body; 11. Receiving cavity; 12. Inlet channel; 121. Annular groove; 13. Outlet channel; 131. Through hole; 132. Corresponding groove; 2. Valve cover assembly; 3. Ball; 4. Valve stem; 5. Filter screen; 51. Mesh cover; 52. First movable ring; 6. Leakage structure; 61. Leakage hole; 62. Abutment; 621. Spring; 622. Second movable ring; 7. Rotating shaft; 8. Detection plate; 9. Counting device; 10. Fixing block; 20. Sealing column. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be further described in detail to make the technical solution of this utility model easier to understand and master.

[0029] This application discloses a ball valve with a filter screen:

[0030] Reference Figure 1-3 A ball valve with a filter screen includes a valve body 1, a valve cover assembly 2, a ball 3, and a valve stem 4. A receiving cavity 11 is provided in the middle section of the valve body 1 for mounting the valve cover assembly 2, the ball 3, and the valve stem 4. Water inlet channels 12 and water outlet channels 13, which communicate with the receiving cavity 11, are provided at both ends of the valve body 1. The valve body 1 also includes a filter screen 5 and a leakage structure 6. The leakage structure 6 includes a leakage hole 61 and an abutment 62. The filter screen 5 is slidably connected to the water inlet channel 12 along the water flow direction via the abutment 62. The leakage hole 61 is formed through the wall of the water inlet channel 12, and the abutment 62 is used to push the filter screen to always block the leakage hole 61 within the normal clogging range. As the filter screen gradually becomes clogged, the water pressure gradually increases, gradually pushing the filter screen towards the receiving cavity 11. When the degree of clogging exceeds the normal range, the filter screen is pushed excessively, causing the leakage hole 61 to be exposed. Water flows out of the water inlet channel 12 through the leakage hole 61, informing the operator that the filter screen has become clogged beyond the normal range, thus serving as a reminder.

[0031] Reference Figure 2-3 The filter element 5 includes a screen cover 51 and a first movable ring 52. The first movable ring 52 is fixed to the circumferential edge of the screen cover 51, and a contact member 62 is installed on the movable ring. The contact member 62 includes a spring 621 and a second movable ring 622. An annular groove 121 is formed on the inner wall of the water inlet channel 12. Both the first movable ring 52 and the second movable ring 622 slide within the annular groove 121. The first movable ring 52 is threaded onto the second movable ring 622 to facilitate the operator to remove the first movable ring 52 from the second movable ring 622 for cleaning the filter. The inner diameters of the first movable ring 52 and the second movable ring 622 are the same as the diameter of the water inlet channel 12. The fact that the inner diameters of the first movable ring 52 and the second movable ring 622 are the same as the diameter of the water inlet channel 12 prevents the first movable ring 52 and the second movable ring 622 from blocking the water inlet channel 12.

[0032] Spring 621 is fixed parallel to the water flow direction to the bottom wall of the second movable ring 622 and the ring groove 121, and spring 621 is always kept in a stretched state. Spring 621 is used to drive the abutment ring that abuts against the movable ring to abut against the tail end of the connector, so that when the filter screen is within the normal clogging range, the filter screen will not move and expose the warning hole.

[0033] Reference Figure 2The system also includes a rotating shaft 7, multiple detection plates 8, and a rotation counting device 9. A through hole 131 is provided in the water outlet channel 13. One end of the rotating shaft 7 passes through the through hole 131 and rotates perpendicular to the water flow direction within the water outlet channel 13. Multiple detection plates 8 are inserted into the water outlet of the water outlet channel 13 via pins and then mounted on the rotating shaft 7. The rotation counting device 9 is mounted on the outer wall of the water outlet channel 13 and is used to record the number of rotations of the rotating shaft 7. The water flow through the ball 3 drives the detection plates 8 to rotate, thereby driving the rotating shaft 7 to rotate. The rotation counting device 9 records the number of rotations of the rotating shaft 7 and the time, and then calculates and outputs the flow rate through the water outlet channel 13 through its built-in processor. This allows operators to intuitively understand the flow rate through the water outlet channel 13, facilitating the control of when to open and close the ball valve.

[0034] Reference Figure 2 A corresponding groove 132 is provided on the inner wall of the water outlet channel 13, and the corresponding groove 132 is arranged opposite to the through hole 131. A fixing block 10 is sleeved on one end of the rotating shaft 7 that passes through the through hole 131, and the rotating shaft 7 is rotatably connected in the fixing block 10. The fixing block 10 is used to insert into the corresponding groove 132. The design of the corresponding groove 132 allows both ends of the rotating shaft 7 to use the inner wall of the water outlet channel 13 for load-bearing, thereby reducing the impact of water flow on the rotating shaft 7 and extending the service life of the rotating shaft 7. A sealing post 20 is inserted and fixed in the through hole 131, and the sealing post 20 has a clearance groove for the rotating shaft 7 to pass through. The contact surfaces of the fixing block 10, the sealing post 20 and the rotating shaft 7 are all coated with polytetrafluoroethylene. The sealing column 20 is used to prevent water leakage. At the same time, the contact surfaces of the fixing block 10, the sealing column 20 and the rotating shaft 7 are coated with polytetrafluoroethylene, which reduces the friction between the rotating shaft 7 and the fixing block 10 and the sealing column 20, thereby improving the accuracy of the counting device 9.

[0035] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A ball valve with a filter screen, comprising a valve body (1), a valve cover assembly (2), a ball (3), and a valve stem (4), wherein the valve body (1) has a receiving cavity (11) in the middle section, the receiving cavity (11) being used to install the valve cover assembly (2), the ball (3), and the valve stem (4); and the valve body (1) has an inlet channel (12) and an outlet channel (13) at both ends communicating with the receiving cavity (11); characterized in that, It also includes a filter screen (5) and a leakage structure (6). The leakage structure (6) includes a leakage hole (61) and an abutment (62). The filter screen (5) is slidably connected to the water inlet channel (12) along the water flow direction through the abutment (62). The leakage hole (61) is opened through the wall of the water inlet channel (12). The abutment (62) is used to push the filter screen to always block the leakage hole (61) within the normal blockage range.

2. A ball valve with a filter screen according to claim 1, characterized in that, The filter element (5) includes a mesh cover (51) and a first movable ring (52), the first movable ring (52) being fixed on the circumferential edge of the mesh cover (51), and the abutment (62) being mounted on the first movable ring (52).

3. A ball valve with a filter screen according to claim 2, characterized in that, The abutment (62) includes a spring (621) and a second movable ring (622). An annular groove (121) is provided on the inner wall of the water inlet channel (12). The first movable ring (52) and the second movable ring (622) slide within the annular groove (121). The first movable ring (52) is threaded onto the second movable ring (622). The spring (621) is fixed parallel to the water flow direction on the bottom wall of the second movable ring (622) and the annular groove (121). The spring (621) is always kept in a stretched state.

4. A ball valve with a filter screen according to claim 3, characterized in that, The inner diameters of the first movable ring (52) and the second movable ring (622) are the same as the diameter of the water inlet channel (12).

5. A ball valve with a filter screen according to claim 1, characterized in that, It also includes a rotating shaft (7), multiple detection plates (8) and a counting device (9). A through hole (131) is provided on the water outlet channel (13). One end of the rotating shaft (7) passes through the through hole (131) and rotates perpendicular to the water flow direction in the water outlet channel (13). Multiple detection plates (8) are installed on the rotating shaft (7). The counting device (9) is installed on the outer wall of the water outlet channel (13) and is used to record the number of rotations of the rotating shaft (7).

6. A ball valve with a filter screen according to claim 5, characterized in that, The inner wall of the water outlet channel (13) is provided with a corresponding groove (132), which is opposite to the through hole (131); a fixing block (10) is sleeved on one end of the rotating shaft (7) that passes through the through hole (131), and the rotating shaft (7) is rotatably connected in the fixing block (10), which is used to be inserted into the corresponding groove (132).

7. A ball valve with a filter screen according to claim 6, characterized in that, A sealing post (20) is provided in the through hole (131), and a clearance groove is provided on the sealing post (20) for the rotating shaft (7) to pass through; the contact surfaces of the fixing block (10), the sealing post (20) and the rotating shaft (7) are all coated with polytetrafluoroethylene coating.

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