Leakage-proof ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses an anti-leakage ball valve which comprises a valve body, a water outlet is formed in the left end of the valve body, a water inlet is formed in the right side of the valve body, an anti-leakage mechanism is arranged in the water outlet and comprises a fixing frame and a baffle ring, and a first guide hole is formed in the fixing frame. The ball valve is opened through the execution handle of the ball valve, the sealing plate of the ball valve can move towards the direction of the fixing frame under the action of water pressure, so that the sealing plate is far away from the baffle ring, water flow can flow out of the water outlet through the baffle ring and the sealing plate at the moment, and after the ball valve is closed, the sealing plate loses the acting force of the water pressure. When the valve is closed, the valve element can abut against the baffle ring under the action of the reset spring, the rubber sealing ring is inserted into the limiting groove, the automatic sealing function after the valve is closed is achieved, and therefore the problem of valve closing leakage after the valve element is abraded is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a leakage-proof ball valve. Background Art

[0002] Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. Ball valves are the most commonly used valves. Ball valves usually adopt a soft sealing structure. If a ball valve leaks, it can only be replaced as a whole, which is not only cumbersome to operate but also costly.

[0003] For example, the patent with announcement number CN220749098U discloses a ball valve, including a valve body, a valve stem is fixedly and rotatably arranged in the valve body, a fixing component for fixing the valve stem is arranged on the valve body, the fixing component includes a toothed ring fixedly sleeved on the valve stem, a plug plate is slidably arranged left and right in the valve body, a plurality of circumferentially distributed tooth grooves are opened through the toothed ring, one end of the plug plate is located in the tooth groove, a locking sleeve is fixedly arranged in the valve body, and a fixing component for fixing the position of the plug plate is arranged in the locking sleeve. The beneficial effects of the utility model are: by setting up the fixing component, it is convenient to set the valve stem to prevent accidental touch, and by setting up the positioning component, when the valve stem is rotated and adjusted, the other hand does not have to keep pulling the pull ring, so that the adjustment is convenient.

[0004] After long-term use, the existing ball valves will accumulate sand impurities in the water flow on the valve core of the valve body, causing the valve core to wear during repeated use, thereby reducing its sealing performance and causing leakage in the closed ball valve. Therefore, a leakage-proof ball valve is proposed to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a leakage-proof ball valve to solve the above-mentioned problem.

[0006] To achieve the above object, the utility model provides the following technical solution: an anti-leakage ball valve, comprising a valve body, a water outlet is provided at the left end of the valve body, a water inlet is provided at the right end of the valve body, and an anti-leakage mechanism is provided inside the water outlet;

[0007] The anti-leakage mechanism includes a fixing frame and a baffle ring, the fixing frame is provided with a first guide hole, a fixing rod is inserted into the interior of the first guide hole, a return spring is sleeved on the fixing rod, a sealing plate is fixedly installed on the right end of the fixing rod, a rubber sealing ring is fixedly installed on the sealing plate, a sealing groove is provided on the left wall of the baffle ring, the rubber sealing ring is inserted into the interior of the sealing groove, and a guide rod is fixedly installed on the sealing plate.

[0008] Preferably, a second guide hole is opened on the fixing frame, and the other end of the guide rod passes through the interior of the second guide hole. The fixing frame is fixedly installed inside the water outlet. The number of the guide rods is three, and the three guide rods are fixedly installed on the sealing plate at equal intervals. The sealing plate can be guided by the arrangement of the guide rods and the second guide hole, so that the sealing plate can move stably under the impact of water pressure.

[0009] Preferably, the retaining ring is fixedly installed inside the water outlet, and a limiting groove is provided on the fixing frame. The left end of the reset spring abuts against the inside of the limiting groove. The setting of the limiting groove can limit the reset spring and avoid the problem of displacement of the reset spring during use.

[0010] Preferably, a limiting ring is fixedly mounted on the left wall of the sealing plate, and the right end of the reset spring is sleeved on the outer wall of the limiting ring. The setting of the limiting ring can limit the reset spring.

[0011] Preferably, a flange is fixedly mounted on the water outlet, an execution handle is provided on the valve body, and the right end of the reset spring abuts against the left wall of the sealing plate. The provision of the flange facilitates docking of the valve body and the pipeline.

[0012] Preferably, a fixing ring is fixedly connected to the inside of the water inlet, a mounting ring is fixedly installed on the right wall of the fixing ring, and a filter is fixedly installed inside the mounting ring. The filter can filter the water flow to prevent sand from accumulating on the valve core and causing a problem of reduced sealing.

[0013] The utility model provides a leakage-proof ball valve, which has the following beneficial effects:

[0014] (1) The utility model opens the ball valve by means of the actuator handle of the ball valve. Under the action of water pressure, the sealing plate moves toward the fixing frame, so that the sealing plate is away from the retaining ring. At this time, water can flow out of the water outlet through the retaining ring and the sealing plate. When the ball valve is closed, the sealing plate loses the force of water pressure and abuts against the retaining ring under the action of the return spring. The rubber sealing ring is inserted into the inner part of the limit groove, realizing the automatic sealing effect after the valve is closed, thereby preventing the problem of valve leakage after the valve core is worn.

[0015] (2) The utility model provides a mounting ring and a filter screen inside the water inlet, thereby filtering the water flow to a certain extent, reducing the accumulation of sand and impurities in the valve core of the valve body, which causes the valve core to wear when opening and closing, further improving the service life of the ball valve and reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the water inlet structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the water outlet of the utility model;

[0020] Figure 4 This is a schematic diagram of the anti-leakage mechanism structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the water inlet of the utility model.

[0022] In the figure: 1. valve body; 2. anti-leakage mechanism; 201. fixing frame; 202. retaining ring; 203. first guide hole; 204. fixing rod; 205. return spring; 206. sealing plate; 207. limiting ring; 208. second guide hole; 209. guide rod; 210. limiting groove; 211. sealing groove; 212. rubber sealing ring; 3. water outlet; 4. flange; 5. execution handle; 6. water inlet; 7. fixing ring; 8. mounting ring; 9. filter. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0025] like Figure 1-5As shown, the utility model provides a technical solution: an anti-leakage ball valve, comprising a valve body 1, a water outlet 3 is opened at the left end of the valve body 1, a water inlet 6 is opened at the right side of the valve body 1, and an anti-leakage mechanism 2 is arranged inside the water outlet 3;

[0026] The anti-leakage mechanism 2 includes a fixing frame 201 and a baffle ring 202. The fixing frame 201 is provided with a first guide hole 203. A fixing rod 204 is inserted into the interior of the first guide hole 203. A return spring 205 is sleeved on the fixing rod 204. A sealing plate 206 is fixedly installed on the right end of the fixing rod 204. A rubber sealing ring 212 is fixedly installed on the sealing plate 206. A sealing groove 211 is provided on the left wall of the baffle ring 202. The rubber sealing ring 212 is inserted into the interior of the sealing groove 211. A guide rod 209 is fixedly installed on the sealing plate 206.

[0027] A second guide hole 208 is provided on the fixing frame 201, and the other end of the guide rod 209 passes through the interior of the second guide hole 208. The fixing frame 201 is fixedly installed inside the water outlet 3. There are three guide rods 209, and the three guide rods 209 are fixedly installed on the sealing plate 206 at equal intervals. The sealing plate 206 can be guided by the arrangement of the guide rod 209 and the second guide hole 208, so that the sealing plate 206 can move stably under the impact of water pressure.

[0028] The retaining ring 202 is fixedly installed inside the water outlet 3, and a limiting groove 210 is opened on the fixing frame 201. The left end of the reset spring 205 abuts against the inside of the limiting groove 210. The setting of the limiting groove 210 can limit the reset spring 205, thereby avoiding the problem of displacement of the reset spring 205 during use.

[0029] A limit ring 207 is fixedly mounted on the left wall of the sealing plate 206 , and the right end of the return spring 205 is sleeved on the outer wall of the limit ring 207 . The setting of the limit ring 207 can limit the return spring 205 .

[0030] A flange 4 is fixedly mounted on the water outlet 3, an actuator handle 5 is provided on the valve body 1, and the right end of the reset spring 205 abuts against the left wall of the sealing plate 206. The arrangement of the flange 4 facilitates the connection between the valve body 1 and the pipeline.

[0031] In this embodiment, the ball valve is opened by the actuator handle 5 of the ball valve, and its sealing plate 206 will move toward the direction of the fixing frame 201 under the action of water pressure, so that the sealing plate 206 is away from the retaining ring 202. At this time, the water flow can pass through the retaining ring 202 and the sealing plate 206 and flow out from the water outlet 3. When the ball valve is closed, the sealing plate 206 loses the force of water pressure and will abut against the retaining ring 202 under the action of the reset spring 205. The rubber sealing ring 212 is inserted into the interior of the limiting groove 210 to achieve automatic sealing after the valve is closed, thereby preventing the problem of valve leakage after the valve core is worn. Example 2

[0032] like Figure 1-5 As shown, on the basis of embodiment 1, the utility model provides a technical solution: a fixing ring 7 is fixedly connected to the inside of the water inlet 6, a mounting ring 8 is fixedly installed on the right wall of the fixing ring 7, and a filter screen 9 is fixedly installed inside the mounting ring 8. The setting of the filter screen 9 can filter the water flow to prevent sand from accumulating on the valve core and causing a problem of reduced sealing.

[0033] In this embodiment, by arranging a mounting ring 8 and a filter screen 9 inside the water inlet 6, the water flow can be filtered to a certain extent, thereby reducing the accumulation of sand impurities in the valve core of the valve body 1, which causes wear of the valve core when opening and closing the valve core, further improving the service life of the ball valve and reducing the risk of leakage.

[0034] When in use, the ball valve is opened by the actuator handle 5 of the ball valve, and its sealing plate 206 will move toward the direction of the fixing frame 201 under the action of water pressure, so that its sealing plate 206 is away from the retaining ring 202. At this time, the water flow can pass through the retaining ring 202 and the sealing plate 206 and flow out from the water outlet 3. When the ball valve is closed, the sealing plate 206 loses the force of water pressure and will abut against the retaining ring 202 under the action of the reset spring 205. Its rubber sealing ring 212 is inserted into the interior of the limiting groove 210 to achieve automatic sealing after the valve is closed, thereby preventing the problem of valve leakage after the valve core is worn; by arranging the mounting ring 8 and the filter screen 9 inside the water inlet 6, the water flow can be filtered to a certain extent, reducing the accumulation of sand impurities at the valve core of the valve body 1, which causes the valve core to wear when opening and closing, further improving the service life of the ball valve and reducing the risk of leakage.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof ball valve, comprising a valve body (1), characterized in that: A water outlet (3) is provided at the left end of the valve body (1), a water inlet (6) is provided at the right side of the valve body (1), and a leakage prevention mechanism (2) is arranged inside the water outlet (3); the leakage prevention mechanism (2) comprises a fixing frame (201) and a retaining ring (202); a first guide hole (203) is provided on the fixing frame (201), a fixing rod (204) is inserted into the inside of the first guide hole (203), a return spring (205) is sleeved on the fixing rod (204), a sealing plate (206) is fixedly mounted on the right end of the fixing rod (204), a rubber sealing ring (212) is fixedly mounted on the sealing plate (206), a sealing groove (211) is provided on the left wall of the retaining ring (202), the rubber sealing ring (212) is inserted into the inside of the sealing groove (211), and a guide rod (209) is fixedly mounted on the sealing plate (206).

2. The anti-leakage ball valve according to claim 1, characterized in that: The fixing frame (201) is provided with a second guide hole (208), the other end of the guide rod (209) passes through the interior of the second guide hole (208), the fixing frame (201) is fixedly mounted inside the water outlet (3), the number of the guide rods (209) is three, and the three guide rods (209) are fixedly mounted on the sealing plate (206) at equal intervals.

3. The anti-leakage ball valve according to claim 1, characterized in that: The retaining ring (202) is fixedly mounted inside the water outlet (3); a limiting groove (210) is provided on the fixing frame (201); and the left end of the return spring (205) abuts against the inside of the limiting groove (210).

4. The anti-leakage ball valve according to claim 1, characterized in that: A limit ring (207) is fixedly mounted on the left wall of the sealing plate (206), and the right end of the return spring (205) is sleeved on the outer wall of the limit ring (207).

5. The anti-leakage ball valve according to claim 1, characterized in that: A flange (4) is fixedly mounted on the water outlet (3), an actuating handle (5) is provided on the valve body (1), and the right end of the return spring (205) abuts against the left wall of the sealing plate (206).

6. The anti-leakage ball valve according to claim 1, characterized in that: A fixing ring (7) is fixedly connected to the interior of the water inlet (6), a mounting ring (8) is fixedly mounted on the right wall of the fixing ring (7), and a filter screen (9) is fixedly mounted inside the mounting ring (8).

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