Integrated external control sealing ball body

Abstract

The utility model relates to the technical field of ball valve cores, in particular to an integrated external control sealing ball which comprises a ball body, a left shell, a right shell and a valve rod, the ball body is provided with a channel, the left shell and the right shell are both arranged on the ball body in a sleeved mode, the edge of the left shell is connected with the edge of the right shell in an abutting mode, and the valve rod is arranged in the channel. A plurality of connecting rings are fixedly arranged on the outer surface of the left shell and the outer surface of the right shell, the left shell and the right shell are in bolted connection through the connecting rings, and the valve rod is used for controlling rotation of the ball. According to the ball valve, the left shell body and the right shell body can be replaced after the outer surfaces of the left shell body and the right shell body cannot be effectively sealed with the valve seat due to excessive abrasion, the whole ball body does not need to be replaced, and therefore the use cost of the ball valve is reduced, and waste of ball body production resources is reduced.

Description

Technical Field

[0001] This application relates to the field of ball valve core technology, and in particular to an integrated externally controlled sealing ball. Background Technology

[0002] A ball valve generally includes a valve body, a valve stem, and a ball core. The valve body has an inner cavity, a medium inflow channel communicating with the inner cavity, and a medium outflow channel. The ball core is located inside the inner cavity and has a guide channel. The valve stem and the ball core work together, and the valve stem drives the ball core to rotate, thereby controlling the connection between the guide channel and the medium inflow and outflow channels, achieving the effect of controlling the opening and closing of the fluid medium.

[0003] Currently, a Chinese utility model patent application published on August 20, 2024, with publication number CN221569494U, provides a ball valve ball, including a ball body with a guide hole and a first limiting cavity. A pair of movable blocks are provided within the first limiting cavity, and a spring is fixedly connected between the two movable blocks. A second limiting cavity is provided above the first limiting cavity. A circular groove is provided on the ball body. A locking block is fixedly connected to the top of the pair of movable blocks. The other side of the locking block penetrates the sidewall of the second limiting cavity and extends into the circular groove. A valve stem is provided within the circular groove, and a pair of locking grooves matching the locking block are provided on the valve stem. A pair of movable openings are provided below the first limiting cavity. A vertical rod is fixedly connected to the bottom of each movable block, and the bottom end of the vertical rod passes through the movable opening.

[0004] In related technologies, the integrated external control sealing ball valve suffers from leakage. During operation, the ball rotates and rubs against the valve seat. The medium passing through the valve and impurities within it also continuously erode the surface of the ball. After prolonged use, the ball may become too worn to form an effective seal with the valve seat, leading to leakage. In such cases, the entire ball often needs to be replaced to ensure the normal operation of the valve, increasing the cost of the valve and wasting the production resources of the ball. Utility Model Content

[0005] This application provides an integrated externally controlled sealing ball, which can improve the technical problem in related technologies where the entire ball needs to be replaced after excessive wear of the ball surface, resulting in high usage costs for ball valves.

[0006] This application provides an integrated externally controlled sealing sphere, which includes a sphere, a left housing, a right housing, and a valve stem. The sphere has a channel, and the left and right housings are both fitted onto the sphere. The edges of the left and right housings abut against each other. Multiple connecting rings are fixedly provided on the outer surfaces of the left and right housings. The left and right housings are connected by connecting ring bolts. The valve stem is used to control the rotation of the sphere.

[0007] The technical solution described above in this application embodiment has at least the following technical effects: When the ball valve is working, the valve seat abuts against the left and right housings to form a seal. When the ball is rotated by the valve stem, the ball seat rubs against the left and right housings. The medium flowing inside the ball valve and the impurities inside the medium will also continuously wash against the outer surfaces of the left and right housings. When the outer surfaces of the left and right housings can no longer form an effective seal with the valve seat due to excessive wear, the operator can remove the ball from the ball valve, then remove the connecting bolts connecting each connecting ring, remove the left and right housings from the ball, and then put the new left and right housings on the outer surface of the ball. Then, the connecting rings can be connected with bolts. It is not necessary to replace the entire ball, thereby reducing the use cost of the ball valve and reducing the waste of ball production resources.

[0008] The integrated external control sealing ball provided in this application embodiment allows for the replacement of the left and right housings after excessive wear has rendered them unable to form an effective seal with the valve seat, without requiring the replacement of the entire ball. This reduces the operating cost of the ball valve and minimizes the waste of ball production resources.

[0009] In some embodiments, the edges of both the left and right housings are provided with a first sealing groove, and a first sealing gasket is provided inside the first sealing groove.

[0010] In some embodiments, the channel is provided with a wear-resistant pipe and a fixing ring. The outer circumferential surface of the wear-resistant pipe abuts against the inner circumferential surface of the sphere. One side of the fixing ring abuts against the wear-resistant pipe, and the other side of the fixing ring abuts against the left shell. A second sealing groove is provided on the left shell, the right shell, and the fixing ring. A second sealing gasket is provided inside the second sealing groove.

[0011] In some embodiments, a filter screen is fixedly disposed on the inner circumferential surface of the fixing ring.

[0012] In some embodiments, the sphere is provided with an installation groove and a slot, the valve stem includes a valve stem body and a fixing plate, a locking pin is fixedly provided at the bottom of the fixing plate, the fixing plate is disposed inside the installation groove, the locking pin is engaged inside the slot, and the valve stem is fixedly disposed at the top of the fixing plate.

[0013] In some embodiments, the fixing plate has a connecting hole, a connecting post passes through the connecting hole, the bottom of the connecting post is fixedly connected to the ball, the surface of the connecting post is threaded, and the top of the connecting post is threaded with a nut.

[0014] In some embodiments, a positioning post is fixedly provided at the bottom of the sphere. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the integrated externally controlled sealing sphere provided in the embodiments of this application. Figure 1 ;

[0016] Figure 2 This is an exploded structural diagram of the integrated externally controlled sealing sphere provided in the embodiments of this application;

[0017] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of section B;

[0019] Figure 5 This is a cross-sectional view of the sphere, the left shell, and the right shell;

[0020] Figure 6 This is a schematic diagram of the overall structure of the valve stem.

[0021] The following are the labeling elements in the figure:

[0022] 1. Sphere; 11. Channel; 12. Mounting groove; 13. Slot; 2. Left housing; 21. Connecting ring; 22. First sealing groove; 23. First sealing gasket; 24. Second sealing groove; 25. Second sealing gasket; 3. Right housing; 4. Valve stem; 41. Valve stem body; 42. Fixing plate; 421. Locking pin; 422. Connecting hole; 5. Wear-resistant pipe; 6. Fixing ring; 61. Filter screen; 7. Connecting post; 8. Positioning post. Detailed Implementation

[0023] Based on this, in order to improve the problem of the ball valve having a high cost due to the need to replace the entire ball after excessive wear of the ball surface in related technologies, the embodiments of this application provide the following solution.

[0024] The following combination Figures 1 to 5 The present invention will be described in further detail below.

[0025] This embodiment discloses an integrated externally controlled sealing sphere: including a sphere 1, a left housing 2, a right housing 3, and a valve stem 4. The sphere 1 has a channel 11. The left housing 2 and the right housing 3 are both fitted onto the sphere 1. The edges of the left housing 2 and the right housing 3 abut against each other. Multiple connecting rings 21 are fixedly provided on the outer surfaces of the left housing 2 and the right housing 3. The left housing 2 and the right housing 3 are bolted together by the connecting rings 21. The valve stem 4 is used to control the rotation of the sphere 1. The edges of the left housing 2 and the right housing 3 are provided with a first sealing groove 22. A first sealing gasket 23 is provided inside the first sealing groove 22.

[0026] As can be seen from the above, in the integrated external control sealing ball provided in this application embodiment, when the ball valve is working, the valve seat abuts against the left housing 2 and the right housing 3 respectively to form a seal. When the ball 1 is rotated by the valve stem 4, the ball seat rubs against the left housing 2 and the right housing 3. The medium flowing inside the ball valve and the impurities inside the medium will also continuously wash against the outer surfaces of the left housing 2 and the right housing 3. When the outer surfaces of the left housing 2 and the right housing 3 can no longer form an effective seal with the valve seat due to excessive wear, the operator can remove the entire ball from the ball valve and then remove the connecting rings 21. By removing the left housing 2 and right housing 3 from the ball 1 using the connecting bolts, and then fitting the new left housing 2 and right housing 3 onto the outer surface of the ball 1, the connecting rings 21 can be connected using bolts. This eliminates the need to replace the entire ball 1, thereby reducing the operating cost of the ball valve and minimizing the waste of production resources for the ball 1. When the ball valve is closed, the gap where the left housing 2 and right housing 3 meet will bear the pressure of the medium. The first sealing gasket 23 can improve the sealing performance of the gap, preventing the medium from leaking from the gap to the valve stem 4 and accelerating the corrosion of the valve stem 4 parts.

[0027] In some embodiments, please refer to the following: Figures 1 to 5 The channel 11 is provided with a wear-resistant pipe 5 and a fixing ring 6. The outer circumferential surface of the wear-resistant pipe 5 abuts against the inner circumferential surface of the sphere 1. One side of the fixing ring 6 abuts against the wear-resistant pipe 5, and the other side of the fixing ring 6 abuts against the left shell 2. The left shell 2, the right shell 3 and the fixing ring 6 are all provided with a second sealing groove 24. A second sealing gasket 25 is provided inside the second sealing groove 24. A filter screen 61 is fixedly provided on the inner circumferential surface of the fixing ring 6.

[0028] With this configuration, the wear-resistant pipe 5 protects the surface of the channel 11. When the medium flowing inside the ball valve passes through the filter screen 61, the filter screen 61 removes larger impurities contained in the medium, reducing the wear on the wear-resistant pipe 5 caused by impurities as the medium flows through the channel 11. It also slows down the rate at which impurities clog the internal gaps of the channel 11. The second sealing gasket 25 prevents medium leakage from the gap between the left housing 2 and the fixing ring 6. When the wear-resistant pipe 5 is severely worn and needs to be replaced, the operator can... First, remove the left housing 2 and the right housing 3. Then, take out the fixing rings 6 and the filter screen 61 at both ends of the channel 11. Next, take out the wear-resistant pipe 5. At the same time, you can clean the filter screen 61 and the channel 11. Then, put the left fixing ring 6 and the filter screen 61 into the left side of the channel 11. Put the left housing 2 on the ball 1. Then, put the new wear-resistant pipe 5 into the wear-resistant pipe 5 from the right side. Then, put in the right fixing ring 6 and the filter screen 61. Then, put the right housing 3 on the ball 1 and connect it to the left housing 2 through the connecting ring 21.

[0029] Optionally, in some embodiments, please refer to Figure 2 and Figure 6 The ball 1 has an installation groove 12 and a slot 13. The valve stem 4 includes a valve stem body 41 and a fixing plate 42. A locking pin 421 is fixedly installed at the bottom of the fixing plate 42. The fixing plate 42 is located inside the installation groove 12. The locking pin 421 is engaged inside the slot 13. The valve stem 4 is fixedly installed at the top of the fixing plate 42. The fixing plate 42 has a connecting hole 422. A connecting post 7 passes through the connecting hole 422. The bottom of the connecting post 7 is fixedly connected to the ball 1. The surface of the connecting post 7 is threaded. A nut is threadedly connected to the top of the connecting post 7.

[0030] With this setup, when installing the valve stem 4, the connecting holes 422 on the fixing plate 42 are aligned with each connecting post 7, and then the fixing plate 42 is placed inside the mounting groove 12. The connecting posts 7 pass through the connecting holes 422, and the locking pins 421 are engaged inside the locking groove 13. Then, the nuts are tightened on the connecting posts 7 to fix the fixing plate 42. When the valve stem body 41 is rotated, the valve stem body 41 drives the fixing plate 42 to rotate. The fixing plate 42 drives the ball 1 to rotate through the locking pins 421 and the connecting posts 7. The connecting posts 7 can make the connection between the fixing plate 42 and the ball 1 more secure and reduce the probability of loosening between the fixing plate 42 and the ball 1.

[0031] Optionally, please refer to Figure 1 A positioning post 8 is fixedly provided at the bottom of the sphere 1.

[0032] With this configuration, when the ball 1 is installed inside the ball valve, the positioning pin 8 can cooperate with the cylindrical mounting groove 12 inside the ball valve to support the ball 1. At the same time, it can also limit the movement of the ball 1, the left housing 2, and the right housing 3, preventing the left housing 2 or the right housing 3 from not fitting tightly with the valve seat during the rotation of the ball 1, which could lead to media leakage, or the ball 1 from rotating poorly.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An integrated externally controlled sealing sphere, characterized in that: The device includes a sphere (1), a left housing (2), a right housing (3), and a valve stem (4). The sphere (1) has a channel (11). The left housing (2) and the right housing (3) are both fitted onto the sphere (1). The edges of the left housing (2) and the right housing (3) abut against each other. Multiple connecting rings (21) are fixedly provided on the outer surfaces of the left housing (2) and the right housing (3). The left housing (2) and the right housing (3) are bolted together by the connecting rings (21). The valve stem (4) is used to control the rotation of the sphere (1).

2. The integrated externally controlled sealing sphere according to claim 1, characterized in that: The edges of the left shell (2) and the right shell (3) are provided with a first sealing groove (22), and a first sealing gasket (23) is provided inside the first sealing groove (22).

3. The integrated externally controlled sealing sphere according to claim 1, characterized in that: The channel (11) is provided with a wear-resistant pipe (5) and a fixing ring (6). The outer circumferential surface of the wear-resistant pipe (5) abuts against the inner circumferential surface of the sphere (1). One side of the fixing ring (6) abuts against the wear-resistant pipe (5), and the other side of the fixing ring (6) abuts against the left shell (2). The left shell (2), the right shell (3), and the fixing ring (6) are all provided with a second sealing groove (24). A second sealing gasket (25) is provided inside the second sealing groove (24).

4. The integrated externally controlled sealing sphere according to claim 3, characterized in that: A filter screen (61) is fixedly installed on the inner circumferential surface of the fixing ring (6).

5. The integrated externally controlled sealing sphere according to any one of claims 1-4, characterized in that: The ball (1) is provided with an installation groove (12) and a slot (13). The valve stem (4) includes a valve stem body (41) and a fixing plate (42). A locking pin (421) is fixedly provided at the bottom of the fixing plate (42). The fixing plate (42) is located inside the installation groove (12). The locking pin (421) is engaged inside the slot (13). The valve stem (4) is fixedly located at the top of the fixing plate (42).

6. The integrated externally controlled sealing sphere according to claim 5, characterized in that: The fixing plate (42) has a connecting hole (422), and a connecting post (7) is inserted inside the connecting hole (422). The bottom of the connecting post (7) is fixedly connected to the ball (1). The surface of the connecting post (7) is threaded, and a nut is threaded to the top of the connecting post (7).

7. The integrated externally controlled sealing sphere according to claim 6, characterized in that: A positioning post (8) is fixedly installed at the bottom of the sphere (1).

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