Leakage-proof ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses a leakproof ball valve which comprises a valve body, a valve ball and a valve shaft, the valve ball is arranged inside the valve body, the valve shaft penetrates through the valve body and is fixedly connected with the valve ball, a rotating plate is arranged on the upper portion of the outer wall of the valve shaft, and a sealing mechanism is arranged on the lower portion of the outer wall of the valve shaft. The sealing mechanism comprises a connecting sleeve, the inner wall of the connecting sleeve is arranged on the outer wall of the valve shaft in a sleeving mode, the outer wall of the valve shaft is in threaded connection with a threaded sleeve, guide grooves are formed in the two sides of the outer wall of the threaded sleeve, and guide blocks are fixedly connected to the two sides of the inner wall of the connecting sleeve. According to the utility model, the connecting sleeve is fixed through the fixing mechanism, the rotating plate is rotated to drive the valve shaft to rotate, and under the matching use of the guide groove and the guide block, the screw sleeve can move downwards, so that the sealing gasket is pressed on the valve body, and the sealing between the valve body and the valve shaft can be realized; and water is prevented from leaking from the joint between the valve shaft and the valve body.

Description

Technical Field

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

[0002] A ball valve is a valve in which the valve ball is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. It is a basic component in a piping system. It can be used by connecting both ends of the ball valve to water pipes.

[0003] However, after long-term use, the existing ball valves often suffer from friction loss between the ball valve shaft and the ball valve body due to frequent opening or closing, or a tiny gap will appear between the ball valve shaft and the ball valve body due to aging and rust, resulting in leakage. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a leakage-proof ball valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a leakage-proof ball valve, comprising a valve body, a valve ball and a valve shaft, the valve ball is arranged inside the valve body, the valve shaft passes through the valve body and is fixedly connected to the valve ball, a rotating plate is arranged on the upper part of the outer wall of the valve shaft, a sealing mechanism is arranged on the lower part of the outer wall of the valve shaft, the sealing mechanism comprises a connecting sleeve, the inner wall of the connecting sleeve is sleeved on the outer wall of the valve shaft, the outer wall of the valve shaft is threadedly connected with a screw sleeve, guide grooves are provided on both sides of the outer wall of the screw sleeve, guide blocks are fixedly connected on both sides of the inner wall of the connecting sleeve, the inner wall of the guide groove is slidably connected to the outer wall of the guide block, a sealing gasket is fixedly connected to the lower surface of the screw sleeve, the outer wall of the valve shaft is sleeved with a spring, the spring is arranged inside the connecting sleeve, and a fixing mechanism is provided on the outer wall of the connecting sleeve.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes a fixing sleeve and a connecting ring, the lower surface of the fixing sleeve is fixedly connected to the upper surface of the valve body, the inner wall of the connecting ring is threadedly connected to the outer wall of the connecting sleeve, the upper surface of the fixing sleeve is provided with a slot, the lower surface of the connecting ring is fixedly connected with a latch tooth, and the latch tooth is engaged with the inner wall of the slot.

[0008] As a further description of the above technical solution:

[0009] The upper part of the outer wall of the valve shaft is threadedly connected with a screw ring 1 and a screw ring 2, the upper surface of the screw ring 1 fits with the lower surface of the rotating plate, and the lower surface of the screw ring 2 fits with the upper surface of the rotating plate.

[0010] As a further description of the above technical solution:

[0011] One side of the valve body is fixedly connected with a water inlet pipe, and the other side of the valve body is fixedly connected with a water outlet pipe.

[0012] As a further description of the above technical solution:

[0013] One end of the water inlet pipe and the water outlet pipe is provided with a sealing ring.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the connecting sleeve is fixed by a fixing mechanism, and the valve shaft is driven to rotate by rotating the rotating plate. With the cooperation of the guide groove and the guide block, the screw sleeve can be moved downward, and then the sealing gasket is pressed on the valve body, thereby achieving sealing between the valve body and the valve shaft, and preventing water from leaking from the connection between the valve shaft and the valve body.

[0016] 2. In the utility model, the connecting ring can be rotated to make the latching teeth disengage from the slots, and then the screw ring one is rotated to make the screw ring one disengage from the valve shaft, so that the rotating plate can be removed from the valve shaft, and then the screw ring two is rotated to make it disengage from the valve shaft, so that the sealing mechanism can be removed from the valve shaft, thereby realizing the replacement of the sealing gasket and avoiding the deterioration of the sealing effect due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an anti-leakage ball valve proposed by the utility model;

[0018] Figure 2 This is a cross-sectional view of an anti-leakage ball valve proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of an anti-leakage ball valve proposed by the utility model;

[0020] Figure 4 The utility model is a structural expansion diagram of an anti-leakage ball valve.

[0021] Legend:

[0022] 1. Valve body; 2. Valve ball; 3. Valve shaft; 4. Sealing mechanism; 401. Connecting sleeve; 402. Screw sleeve; 403. Guide groove; 404. Guide block; 405. Sealing gasket; 406. Spring; 5. Fixing mechanism; 501. Fixing sleeve; 502. Connecting ring; 503. Slot; 504. Gear; 6. Rotating plate; 7. Screw ring 1; 8. Screw ring 2; 9. Water inlet pipe; 10. Water outlet pipe. 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] Reference Figure 1-4 , the utility model provides an embodiment: a leakage-proof ball valve, comprising a valve body 1, a valve ball 2 and a valve shaft 3, the valve ball 2 is arranged inside the valve body 1, the valve shaft 3 passes through the valve body 1 and is fixedly connected to the valve ball 2, a rotating plate 6 is arranged on the upper part of the outer wall of the valve shaft 3, a sealing mechanism 4 is arranged on the lower part of the outer wall of the valve shaft 3, the sealing mechanism 4 comprises a connecting sleeve 401, the inner wall of the connecting sleeve 401 is sleeved on the outer wall of the valve shaft 3, a screw sleeve 402 is threadedly connected to the outer wall of the screw sleeve 402, guide grooves 403 are provided on both sides of the outer wall of the screw sleeve 402, guide blocks 404 are fixedly connected on both sides of the inner wall of the connecting sleeve 401, the inner wall of the guide groove 403 is slidably connected to the outer wall of the guide block 404, a sealing gasket 405 is fixedly connected to the lower surface of the screw sleeve 402, the outer wall of the valve shaft 3 is sleeved with a spring 406, the spring 406 is arranged inside the connecting sleeve 401, and a fixing mechanism 5 is provided on the outer wall of the connecting sleeve 401;

[0025] The connecting sleeve 401 is fixed by the fixing mechanism 5, and the valve shaft 3 is driven to rotate by rotating the rotating plate 6. With the cooperation of the guide groove 403 and the guide block 404, the screw sleeve 402 can be moved downward, and the sealing gasket 405 is pressed on the valve body 1, thereby achieving sealing between the valve body 1 and the valve shaft 3 to prevent water from leaking from the connection between the valve shaft 3 and the valve body 1.

[0026] The fixing mechanism 5 comprises a fixing sleeve 501 and a connecting ring 502. The lower surface of the fixing sleeve 501 is fixedly connected to the upper surface of the valve body 1. The inner wall of the connecting ring 502 is threadedly connected to the outer wall of the connecting sleeve 401. A clamping groove 503 is provided on the upper surface of the fixing sleeve 501. A clamping tooth 504 is fixedly connected to the lower surface of the connecting ring 502. The clamping tooth 504 is clamped to the inner wall of the clamping groove 503. The upper part of the outer wall of the valve shaft 3 is threadedly connected with a screw ring 1 7 and a screw ring 2 8. The upper surface of the screw ring 1 7 fits with the lower surface of the rotating plate 6. The lower surface of the screw ring 2 8 fits with the upper surface of the rotating plate 6.

[0027] By rotating the connecting ring 502, the latch tooth 504 can be disengaged from the latch groove 503, and then the screw ring 1 7 can be rotated to disengage the screw ring 1 7 from the valve shaft 3, so that the rotating plate 6 can be removed from the valve shaft 3, and then the screw ring 2 8 can be rotated to disengage it from the valve shaft 3, so that the sealing mechanism 4 can be removed from the valve shaft 3, thereby realizing the replacement of the sealing gasket 405 to avoid the deterioration of the sealing effect due to long-term use.

[0028] A water inlet pipe 9 is fixedly connected to one side of the valve body 1 , and a water outlet pipe 10 is fixedly connected to the other side of the valve body 1 ; one end of the water inlet pipe 9 and the water outlet pipe 10 are both provided with sealing rings.

[0029] Working principle: When the device is needed, first, by rotating the connecting ring 502 forward, the tooth 504 on the connecting ring 502 is stuck into the groove 503 on the fixing sleeve 501, so that the connecting sleeve 401 can be fixed and locked, and then the valve shaft 3 is driven to rotate by rotating the rotating plate 6. With the cooperation of the guide groove 403 and the guide block 404, the screw sleeve 402 can move downward, and then the sealing gasket 405 is pressed on the valve body 1, so that the valve body 1 and the valve shaft 3 can be sealed to prevent water from leaking from the connection between the valve shaft 3 and the valve body 1. By rotating the connecting ring 502, the tooth 504 can be disengaged from the groove 503, and then the screw ring 1 7 is rotated to separate the screw ring 1 7 from the valve shaft 3, so that the rotating plate 6 can be removed from the valve shaft 3, and then the screw ring 2 8 is rotated to separate it from the valve shaft 3, so that the sealing mechanism 4 can be removed from the valve shaft 3, so that the sealing gasket 405 can be replaced to prevent the sealing effect from being deteriorated due to long-term use.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leak-proof ball valve, comprising a valve body (1), a valve ball (2) and a valve shaft (3), characterized in that: The valve ball (2) is arranged inside the valve body (1); the valve shaft (3) passes through the valve body (1) and is fixedly connected to the valve ball (2); a rotating plate (6) is arranged on the upper part of the outer wall of the valve shaft (3); a sealing mechanism (4) is arranged on the lower part of the outer wall of the valve shaft (3); the sealing mechanism (4) comprises a connecting sleeve (401); the inner wall of the connecting sleeve (401) is sleeved on the outer wall of the valve shaft (3); the outer wall of the valve shaft (3) is threadedly connected with a screw sleeve (402); the outer wall of the screw sleeve (402) is A guide groove (403) is provided on both sides of the connecting sleeve (401), and guide blocks (404) are fixedly connected to the inner walls of the connecting sleeve (401). The inner walls of the guide grooves (403) are slidably connected to the outer walls of the guide blocks (404). A sealing gasket (405) is fixedly connected to the lower surface of the screw sleeve (402). A spring (406) is provided on the outer wall of the valve shaft (3), and the spring (406) is arranged inside the connecting sleeve (401). A fixing mechanism (5) is provided on the outer wall of the connecting sleeve (401).

2. The anti-leakage ball valve according to claim 1, characterized in that: The fixing mechanism (5) comprises a fixing sleeve (501) and a connecting ring (502); the lower surface of the fixing sleeve (501) is fixedly connected to the upper surface of the valve body (1); the inner wall of the connecting ring (502) is threadedly connected to the outer wall of the connecting sleeve (401); a slot (503) is provided on the upper surface of the fixing sleeve (501); and the lower surface of the connecting ring (502) is fixedly connected to a latch tooth (504); the latch tooth (504) is engaged with the inner wall of the slot (503).

3. The anti-leakage ball valve according to claim 1, characterized in that: The upper part of the outer wall of the valve shaft (3) is threadedly connected with a screw ring 1 (7) and a screw ring 2 (8); the upper surface of the screw ring 1 (7) is in contact with the lower surface of the rotating plate (6), and the lower surface of the screw ring 2 (8) is in contact with the upper surface of the rotating plate (6).

4. The anti-leakage ball valve according to claim 1, characterized in that: One side of the valve body (1) is fixedly connected to a water inlet pipe (9), and the other side of the valve body (1) is fixedly connected to a water outlet pipe (10).

5. The anti-leakage ball valve according to claim 4, characterized in that: One end of the water inlet pipe (9) and the water outlet pipe (10) are both provided with sealing rings.

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