A ball valve

Abstract

The utility model belongs to valve structure technical field, specifically disclose a ball valve, including device body, the inside rotation of device body is connected with the valve core, the inside of device body is seted up with the sliding slot, the inside fixed connection of sliding slot has the limit stop, the inside setting of sliding slot has the second sealing ring, one side of second sealing ring and the outer surface of valve core contact, the utility model discloses by the rotation and takes out the fixed screw, removes the limit of fixed screw to sliding block, makes spring reset, and the inside movement of sliding block is carried out in the sliding slot under the spring's push effect, and one end of sliding block and second sealing ring contact, and the extrusion of second sealing ring is carried out, and second sealing ring moves to left side, and the extrusion of valve core is carried out, and valve core moves to left side certain tiny distance, and the surface close contact of third sealing ring is carried out, and make second sealing ring and third sealing ring realize close sealing again to valve core, valve body can be used temporarily at this time, play the need of satisfying the role of emergency use.

Description

Technical Field

[0001] This utility model relates to the field of valve structure technology, specifically a ball valve. Background Technology

[0002] A ball valve is a valve that controls the opening and closing of the valve by rotating a ball inside the valve. There is a through hole in the middle of the ball. By rotating the ball, the flow of fluid media can be opened or closed. At the same time, the flow rate can be controlled by changing different rotation angles of the ball.

[0003] However, in the use of existing technology, the ball is easily worn due to the constant friction and rotation between the ball and the inner wall of the valve body, requiring timely replacement of the ball valve. However, if the ball valve is not pre-purchased, it cannot be replaced in time, which will greatly affect the use of the device. Therefore, a new ball valve has been proposed. Utility Model Content

[0004] The purpose of this invention is to provide a ball valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ball valve, comprising a device body, a valve core rotatably connected inside the device body, a sliding groove formed inside the device body, a limiting block fixedly connected inside the sliding groove, a second sealing ring disposed inside the sliding groove, one side of the second sealing ring contacting the outer surface of the valve core, and the other side of the second sealing ring contacting one side of the limiting block, a slider slidably connected inside the sliding groove, one end of the slider contacting the inside of the limiting block, and a spring fixedly connected to the other end of the slider, the end of the spring away from the slider being fixedly connected to the inner wall of the sliding groove, a limiting post fixedly connected to the upper surface of the device body, a fixing screw disposed inside the limiting post, the bottom end of the fixing screw being threadedly connected to the inside of the slider, and the thread inside the slider being adapted to the thread on the outer surface of the fixing screw.

[0006] Preferably, the device body has a first limiting groove inside, and a third sealing ring is provided inside the first limiting groove, with one side of the third sealing ring in contact with the surface of the valve core.

[0007] Preferably, the valve core has a groove on its surface, and a rotating rod is provided inside the groove. One end of the rotating rod rotates through the interior of the device body and extends to the surface of the device body.

[0008] Preferably, a handle is fixedly connected to the top of the rotating rod, and a second limiting groove is provided inside the main body of the device.

[0009] Preferably, a first sealing ring is provided inside the second limiting groove, and the inner wall of the first sealing ring is in contact with the outer surface of the rotating rod.

[0010] Preferably, a second flange is fixedly connected to one end of the device body, and a first flange is fixedly connected to the other end of the device body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] When the third sealing ring and the second sealing ring cannot make tight contact with the surface of the valve core, resulting in leakage and requiring emergency use of the valve body, the fixing screw is rotated out to release the limiting effect of the fixing screw on the slider, allowing the spring to return to its original position. Under the push of the spring, the slider moves inside the groove, with one end of the slider contacting the second sealing ring and squeezing it, causing the second sealing ring to move to the left and squeeze the valve core. The valve core moves a small distance to the left and makes tight contact with the surface of the third sealing ring, allowing the second and third sealing rings to seal the valve core tightly again. At this time, the valve body can be used temporarily to meet the needs of emergency use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a ball valve according to the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the device body of this utility model;

[0015] Figure 3 This is a schematic diagram of the valve core structure of this utility model;

[0016] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A;

[0017] Figure 5 This utility model Figure 3 A schematic diagram of the structure at point B.

[0018] In the diagram: 1. First flange; 2. Second flange; 3. Device body; 4. Handle; 5. Rotating rod; 6. Limiting post; 7. Fixing screw; 8. First sealing ring; 9. Valve core; 10. Sliding block; 11. Slide groove; 12. Spring; 13. Limiting block; 14. Second sealing ring; 15. Slot; 16. Third sealing ring; 17. First limiting groove; 18. Second limiting groove. Detailed Implementation

[0019] Please see Figure 1-5This utility model provides a technical solution: a ball valve, including a device body 3, with a valve core 9 rotatably connected inside the device body 3. By rotating the valve core 9, the valve body can open or close the pipeline. A sliding groove 11 is provided inside the device body 3, and a limiting block 13 is fixedly connected inside the sliding groove 11. A second sealing ring 14 is provided inside the sliding groove 11, with one side of the second sealing ring 14 contacting the outer surface of the valve core 9. The limiting block 13 limits and fixes the second sealing ring 14, making it contact the surface of the valve core 9. The other side of the second sealing ring 14 contacts one side of the limiting block 13. A slider 10 is slidably connected inside the sliding groove 11, with one end of the slider 10 contacting the inside of the limiting block 13. A spring 12 is fixedly connected to the other end of the slider 10. When the slider 10 is not in contact with the second sealing ring 14 and the device is in normal use, the spring... 12 is under pressure. When the valve core 9 is severely worn and the valve body needs to be used urgently, the spring 12 applies a pushing force to the slider 10, causing the second sealing ring 14 to push the valve core 9 into contact with the third sealing ring 16, ensuring the sealing of the valve body and enabling temporary use of the valve body. The end of the spring 12 away from the slider 10 is fixedly connected to the inner wall of the slide groove 11. A limit post 6 is fixedly connected to the upper surface of the device body 3. A fixing screw 7 is provided inside the limit post 6. The bottom end of the fixing screw 7 is connected to the internal thread of the slider 10, and the internal thread of the slider 10 is matched with the thread on the outer surface of the fixing screw 7. The fixing screw 7 is used to connect the slider 10 to the screw to lock the slider 10, so that the slider 10 does not contact the second sealing ring 14. This prevents the slider 10 from squeezing the second sealing ring 14 during normal use of the device, causing the second sealing ring 14 to come into close contact with the valve core 9 and accelerating the wear of the valve core 9.

[0020] The device body 3 has a first limiting groove 17 inside, and a third sealing ring 16 is provided inside the first limiting groove 17. One side of the third sealing ring 16 is in contact with the surface of the valve core 9. The first limiting groove 17 limits the third sealing ring 16 and fixes its position, so that the third sealing ring 16 is in contact with the valve core 9, thereby achieving a seal on the valve body.

[0021] The valve core 9 has a groove 15 on its surface, and a rotating rod 5 is installed inside the groove 15. One end of the rotating rod 5 rotates through the interior of the device body 3 and extends to the surface of the device body 3. The groove 15 serves to limit the position of the rotating rod 5. Since the bottom of the rotating rod 5 is slightly smaller than the groove 15, when the valve core 9 is worn and the second sealing ring 14 squeezes the valve core 9, causing the valve core 9 to have a certain displacement, the rotating rod 5 will not affect the movement of the valve core 9.

[0022] The top of the rotating rod 5 is fixedly connected to a handle 4, and the inside of the device body 3 is provided with a second limiting groove 18. The handle 4 is used to drive the rotating rod 5 and the valve core 9 to rotate, thereby realizing the function of opening and closing the valve body.

[0023] The second limiting groove 18 is provided with a first sealing ring 8 inside. The inner wall of the first sealing ring 8 is in contact with the outer surface of the rotating rod 5. The second limiting groove 18 is used to limit the position of the first sealing ring 8.

[0024] The device body 3 has a second flange 2 fixedly connected to one end and a first flange 1 fixedly connected to the other end. The first flange 1 and the second flange 2 are used to connect the water pipe.

[0025] Working principle: In use, the first flange 1 is connected to the inlet pipe, and the second flange 2 is connected to the outlet pipe. Then, by turning the handle 4, the rotating rod 5 is rotated, which in turn rotates the valve core 9, thereby controlling the opening and closing of the valve body. During use, the third sealing ring 16 and the second sealing ring 14 are in close contact with the surface of the valve core 9, achieving a seal inside the valve body and preventing water leakage through the surface of the valve core 9. The limiting block 13 is used to limit and fix the second sealing ring 14. When the device is used for a long time, the valve core 9 is worn, and the third sealing ring 16 and the second sealing ring 14 can no longer be in close contact with the surface of the valve core 9. When leakage occurs in the valve body, rotating the fixing screw 7 removes it from inside the limiting post 6, releasing the limiting effect of the fixing screw 7 on the slider 10, allowing the spring 12 to reset. The slider 10 moves inside the slide groove 11 under the push of the spring 12. One end of the slider 10 contacts the second sealing ring 14 and squeezes the second sealing ring 14, causing the second sealing ring 14 to move to the left and squeeze the valve core 9. The valve core 9 moves a small distance to the left and comes into close contact with the surface of the third sealing ring 16, so that the second sealing ring 14 and the third sealing ring 16 can once again achieve a tight seal on the valve core 9. At this time, the valve body can be used temporarily to meet the needs of emergency use.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball valve, comprising a device body (3), characterized in that: A valve core (9) is rotatably connected inside the device body (3). A slide groove (11) is provided inside the device body (3). A limit block (13) is fixedly connected inside the slide groove (11). A second sealing ring (14) is provided inside the slide groove (11). One side of the second sealing ring (14) contacts the outer surface of the valve core (9), and the other side of the second sealing ring (14) contacts one side of the limit block (13). A slider (10) is slidably connected inside the slide groove (11). One end of the slider (10) is in contact with the inside of the limiting block (13), and the other end of the slider (10) is fixedly connected to a spring (12). The end of the spring (12) away from the slider (10) is fixedly connected to the inner wall of the slide groove (11). The upper surface of the device body (3) is fixedly connected to a limiting post (6). The inside of the limiting post (6) is provided with a fixing screw (7). The bottom end of the fixing screw (7) is connected to the internal thread of the slider (10), and the internal thread of the slider (10) is compatible with the thread on the outer surface of the fixing screw (7).

2. A ball valve according to claim 1, characterized in that: The device body (3) has a first limiting groove (17) inside, and a third sealing ring (16) is provided inside the first limiting groove (17). One side of the third sealing ring (16) is in contact with the surface of the valve core (9).

3. A ball valve according to claim 1, characterized in that: The valve core (9) has a slot (15) on its surface. A rotating rod (5) is provided inside the slot (15). One end of the rotating rod (5) rotates through the interior of the device body (3) and extends to the surface of the device body (3).

4. A ball valve according to claim 3, characterized in that: The top of the rotating rod (5) is fixedly connected to a handle (4), and the inside of the device body (3) is provided with a second limiting groove (18).

5. A ball valve according to claim 4, characterized in that: The second limiting groove (18) is provided with a first sealing ring (8), and the inner wall of the first sealing ring (8) is in contact with the outer surface of the rotating rod (5).

6. A ball valve according to claim 1, characterized in that: One end of the device body (3) is fixedly connected to a second flange (2), and the other end of the device body (3) is fixedly connected to a first flange (1).

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