Ball valve locking device

Abstract

The utility model provides a ball valve locking device, which relates to the technical field of refrigeration and comprises a valve body mechanism, an air valve mechanism is arranged on the valve body mechanism, external connection mechanisms are arranged at two ends of the valve body mechanism, the valve body mechanism comprises a valve body, and a valve bonnet is arranged at the top of the valve body. The second sealing gasket made of tetrafluoroethylene is installed at the bottom of the valve rod for sealing, the first sealing gasket made of tetrafluoroethylene is installed on the valve bonnet, and therefore the triple sealing effect is formed in the valve body, the threads are additionally arranged on the valve rod to be matched with the valve bonnet, and the sealing effect is good. When the valve bonnet is screwed tightly, the second sealing gasket on the lower portion of the valve rod is lifted upwards to form sealing with the valve body, the threaded valve bonnet and the first sealing gasket at the position of the valve rod are locked at the same time, and therefore the effective sealing effect is achieved. As the tetrafluoroethylene is not deformed due to the influence of the environment and the system temperature, the sealing performance of the ball valve is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to a ball valve locking device. Background Technology

[0002] Ball valves are a common type of fluid control valve, widely used in various industrial and civil piping systems. In practical applications, to prevent the ball valve from changing its opening state due to misoperation or accidental impact, a locking device is needed to fix the position of the ball valve handle.

[0003] In the prior art, such as the patent publication number CN201284873Y entitled "A Locking Device for a Ball Valve," a handle, a padlock, a valve body, and a valve stem are included. The handle is fitted onto the valve stem and has a stepped hole. A limiting rod is inserted into the stepped hole, with one end extending out of the handle and fixedly connected to the handle, and the other end extending into a limiting hole in the valve body corresponding to the open or closed position of the valve. The handle also has a locking hole that intersects with the stepped hole of the handle, and a padlock is installed in the locking hole. The latch of the padlock is engaged with the step of the limiting rod. A spring is also present between the step of the limiting rod and the stepped hole of the handle. The advantages of this utility model are simple structure, beautiful appearance, low cost, and convenient operation.

[0004] However, the existing refrigeration system is prone to causing the ball valve temperature to drop during operation. Long-term use at low temperatures can cause the sealing ring inside the ball valve locking device to deform, resulting in a decrease in the sealing performance of the ball valve and thus causing refrigerant leakage. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that the sealing ring inside the ball valve locking device is easily deformed under long-term low-temperature conditions, which leads to a decrease in the sealing performance of the ball valve and thus causes refrigerant leakage. Therefore, a ball valve locking device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a ball valve locking device, comprising a valve body mechanism, wherein a pneumatic valve mechanism is provided on the valve body mechanism, and external connecting mechanisms are provided at both ends of the valve body mechanism. The valve body mechanism includes a valve body, wherein a valve cap is provided at the top of the valve body, and a valve stem passes through the top of the valve body. A limiting retaining ring is provided on the outer wall of the valve stem, and two sealing rings are sleeved on the middle part of the valve stem. A first sealing gasket is provided at the connection between the valve cap and the top of the valve stem, and a second sealing gasket is connected between the inner side of the valve body and the bottom end of the valve stem.

[0007] Preferably, the air valve mechanism includes a vent valve head, the bottom of which is fixedly connected to the valve body, an air pipe is provided on the vent valve head, and an air sealing ring is provided at the top of the air pipe.

[0008] Preferably, a connecting transmission component is connected to the bottom of the valve stem, and a ball valve core is connected to the bottom of the connecting transmission component. The ball valve core is movably installed inside the valve body.

[0009] Preferably, the outer wall of the ball valve core is provided with a filling pad, and the filling pad is distributed inside the valve body.

[0010] Preferably, a connecting sleeve is provided at one end of the valve body.

[0011] Preferably, an air valve sleeve is fitted at the top of the air tube, and the air sealing ring is disposed on the inner side of the air valve sleeve at the connection point with the top of the air tube.

[0012] Preferably, the air tube is provided with an air valve core inside, and the top of the air valve core is connected to the inner side of the air valve sleeve.

[0013] Preferably, the external mechanism includes a first connecting pipe and a second connecting pipe, the first connecting pipe being connected to one end of the valve body, and one end of the first connecting pipe having a first connector.

[0014] Preferably, the second connecting pipe is connected to the other end of the valve body, and a second connector is provided at one end of the second connecting pipe.

[0015] Preferably, both the first connector and the second connector are provided with connecting flanges on their outer sides.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this utility model, a second sealing gasket made of PTFE is installed at the bottom of the valve stem for sealing, and a first sealing gasket made of PTFE is also installed on the valve cap, thereby forming a triple sealing effect inside the valve body. The valve stem is threaded to fit with the valve cap. When the valve cap is tightened, the second sealing gasket at the bottom of the valve stem is lifted upward to form a seal with the valve body. The threaded valve cap and the first sealing gasket at the valve stem are locked at the same time, thereby forming an effective sealing effect. By installing two PTFE sealing gaskets to form a triple sealing effect, the sealing performance of the ball valve is greatly improved because PTFE is not affected by the environment and system temperature and will not deform.

[0018] 2. In this utility model, the limiting ring is located between the inner side of the valve body and the outer side of the valve stem, which can provide a stable limiting effect and ensure that the valve stem is stably installed in the designated position. The sealing ring is sleeved on the outer side of the valve stem, which helps to provide a sealing effect. The ball valve core is connected to the connecting transmission component, which facilitates the transmission effect during adjustment and makes it easier to control the ball valve core to realize the opening and closing function. The filling pad is placed at the connection of the ball valve core, which helps to achieve a comprehensive sealing effect, thereby ensuring the sealing performance. Attached Figure Description

[0019] Figure 1 This utility model provides a three-dimensional structural diagram of a ball valve locking device;

[0020] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the diagram;

[0021] Figure 3 This utility model Figure 1 A magnified structural diagram at point B in the diagram.

[0022] Legend: 1. Valve body mechanism; 101. Valve body; 102. Valve cap; 103. Valve stem; 104. Limiting ring; 105. Sealing ring; 106. First sealing gasket; 107. Second sealing gasket; 108. Connecting transmission component; 109. Ball valve core; 110. Filler gasket; 111. Connecting sleeve; 2. Air valve mechanism; 201. Vent valve head; 202. Air pipe; 203. Air valve sleeve; 204. Air sealing ring; 205. Air valve core; 3. External mechanism; 301. First connecting pipe; 302. First connector; 303. Second connecting pipe; 304. Second connector. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1: As Figures 1-3As shown, this utility model provides a technical solution: a ball valve locking device, including a valve body mechanism 1, a pneumatic valve mechanism 2 disposed on the valve body mechanism 1, and external mechanisms 3 disposed at both ends of the valve body mechanism 1. The valve body mechanism 1 includes a valve body 101, a valve cap 102 disposed on the top of the valve body 101, a valve stem 103 passing through the top of the valve body 101, a limiting retaining ring 104 disposed on the outer wall of the valve stem 103, and two sealing rings 105 sleeved on the middle part of the valve stem 103. The valve cap 102 and the valve stem 103 are connected... A first sealing gasket 106 is provided at the top connection. A second sealing gasket 107 is connected between the inner side of the valve body 101 and the bottom end of the valve stem 103. A connecting transmission component 108 is connected to the bottom of the valve stem 103. A ball valve core 109 is connected to the bottom of the connecting transmission component 108. The ball valve core 109 is movably installed on the inner side of the valve body 101. A filling gasket 110 is provided on the outer wall of the ball valve core 109. The filling gasket 110 is distributed inside the valve body 101. A connecting sleeve 111 is provided at one end of the valve body 101.

[0026] In this embodiment, a second sealing gasket 107 made of PTFE is installed at the bottom of the valve stem 103 for sealing, and a first sealing gasket 106 made of PTFE is also installed on the valve cap 102, thereby forming a triple sealing effect inside the valve body 101. A thread is added to the valve stem 103 to engage with the valve cap 102. When the valve cap 102 is tightened, the second sealing gasket 107 at the lower part of the valve stem 103 rises upward to seal with the valve body 101. The threaded valve cap 102 and the first sealing gasket 106 at the valve stem 103 are simultaneously locked, thus forming an effective sealing effect. By installing two PTFE sealing gaskets to form a triple sealing effect, and because PTFE is not affected by environmental and system temperature changes and will not deform, the sealing of the ball valve is greatly improved. The limiting ring 104 is located between the inner side of the valve body 101 and the outer side of the valve stem 103, providing a stable limiting effect and ensuring that the valve stem 103 is stably installed in the designated position. The sealing ring 105 is sleeved on the outer side of the valve stem 103, which helps to provide a sealing effect. The ball valve core 109 is connected through the connecting transmission component 108, which facilitates the transmission effect during adjustment and makes it easier to control the opening and closing function of the ball valve core 109. The filling gasket 110 is located at the connection of the ball valve core 109, which helps to achieve a comprehensive sealing effect and thus ensures the sealing performance. The connecting sleeve 111 provides a connection function, which facilitates a stable connection with the components of the external mechanism 3.

[0027] Example 2: As Figures 1-3As shown, the air valve mechanism 2 includes a vent valve head 201, the bottom of which is fixedly connected to the valve body 101. An air pipe 202 is provided on the vent valve head 201, and an air sealing ring 204 is provided at the top of the air pipe 202. An air valve sleeve 203 is fitted onto the top of the air pipe 202. The air sealing ring 204 is located on the inner side of the air valve sleeve 203 at the connection point with the top of the air pipe 202. An air valve core 205 is provided inside the air pipe 202, and the top of the air valve core 205 is connected to... The inner side of the valve sleeve 203 is connected to the external mechanism 3, which includes a first connecting pipe 301 and a second connecting pipe 303. The first connecting pipe 301 is connected to one end of the valve body 101, and a first connector 302 is provided at one end of the first connecting pipe 301. The second connecting pipe 303 is connected to the other end of the valve body 101, and a second connector 304 is provided at one end of the second connecting pipe 303. Both the first connector 302 and the second connector 304 are provided with connecting flanges on their outer sides.

[0028] In this embodiment, a vent valve head 201 is provided on the valve body 101, and an air pipe 202 is connected to the vent valve head 201. An air valve core 205 is provided inside the vent valve head 201 to facilitate gas regulation. An air valve sleeve 203 is fitted on the outside of the air pipe 202 and connected to the air valve core 205 to facilitate air pressure control and adjust the internal pressure. An air sealing ring 204 is provided at the connection to provide a sealing effect and ensure sealing performance. A first connecting pipe 301 and a second connecting pipe 303 are provided at both ends of the valve body 101 to facilitate communication and transmission. A first connector 302 and a second connector 304 facilitate further connection with external pipelines to achieve effective delivery.

[0029] The working principle of this embodiment is as follows: In use, a second sealing gasket 107 made of PTFE is first installed at the bottom of the valve stem 103 for sealing. A first sealing gasket 106 made of PTFE is also installed on the valve cap 102, thus forming a triple sealing effect inside the valve body 101. A thread is added to the valve stem 103 to engage with the valve cap 102. When the valve cap 102 is tightened, the second sealing gasket 107 at the lower part of the valve stem 103 rises upwards to seal with the valve body 101. Simultaneously, the threaded valve cap 102 and the first sealing gasket 106 at the valve stem 103 are locked, thus forming an effective sealing effect. By installing two PTFE sealing gaskets to form a triple sealing effect, and because PTFE is not affected by environmental or system temperature changes, it can effectively seal the valve body. The sealing performance of the ball valve is greatly improved. The limiting ring 104 is located between the inner side of the valve body 101 and the outer side of the valve stem 103, providing a stable limiting effect and ensuring that the valve stem 103 is stably installed in the designated position. The sealing ring 105 is sleeved on the outer side of the valve stem 103, which helps to provide a sealing effect. The ball valve core 109 is connected to the connecting transmission component 108, which facilitates the transmission function during adjustment and makes it easier to control the opening and closing function of the ball valve core 109. The filling gasket 110 is located at the connection of the ball valve core 109, which helps to achieve a comprehensive sealing effect, thereby ensuring the sealing performance. The connecting sleeve 111 provides a connection function, which facilitates the connection with the components of the external mechanism 3. To achieve a stable connection, a second PTFE gasket 107 is installed at the bottom of the valve stem 103 for sealing, and a first PTFE gasket 106 is also installed on the valve cap 102, thus forming a triple sealing effect inside the valve body 101. A thread is added to the valve stem 103 to mate with the valve cap 102. When the valve cap 102 is tightened, the second PTFE gasket 107 at the bottom of the valve stem 103 rises upward to seal with the valve body 101. Simultaneously, the threaded valve cap 102 and the first PTFE gasket 106 at the valve stem 103 are locked, thus forming an effective seal. By installing two PTFE gaskets to form a triple sealing effect, and because PTFE is not affected by environmental or system temperature changes and will not deform, the sealing of the ball valve is greatly improved. The limiting ring 104 is located between the inner side of the valve body 101 and the outer side of the valve stem 103, providing a stable limiting effect and ensuring that the valve stem 103 is stably installed in the designated position. The sealing ring 105 is sleeved on the outer side of the valve stem 103, which helps to provide a sealing effect. The ball valve core 109 is connected through the connecting transmission component 108, which facilitates the transmission effect during adjustment and makes it easier to control the opening and closing function of the ball valve core 109. The filling gasket 110 is located at the connection of the ball valve core 109, which helps to achieve a comprehensive sealing effect and thus ensures the sealing performance. The connecting sleeve 111 provides a connection function, which facilitates a stable connection with the components of the external mechanism 3.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A ball valve locking device, characterized by: The utility model provides a valve body mechanism (1) is provided with gas valve mechanism (2) on, the both ends of valve body mechanism (1) are provided with external connection mechanism (3), valve body mechanism (1) includes valve body (101), the top of valve body (101) is provided with valve cap (102), the top of valve body (101) is penetrated with valve stem (103), the outer wall of valve stem (103) is equipped with limit snap ring (104), two sealing rings (105) are set in the middle part of valve stem (103), the first sealing gasket (106) is equipped in the connection place of valve cap (102) and the top of valve stem (103), the second sealing gasket (107) is connected between the inboard of valve body (101) and valve stem (103) bottom end.

2. The ball valve locking device of claim 1, wherein: The gas valve mechanism (2) includes a gas valve head (201), the bottom of the gas valve head (201) is fixedly connected to the valve body (101), the gas valve head (201) is provided with a gas pipe (202), the top end of the gas pipe (202) is provided with a gas sealing ring (204).

3. The ball valve locking device of claim 1, wherein: The bottom of the valve stem (103) is connected with a connecting transmission member (108), the bottom of the connecting transmission member (108) is connected with a spherical valve core (109), the spherical valve core (109) is movably installed inside the valve body (101).

4. The ball valve locking device of claim 3, wherein: The outer wall of the spherical valve core (109) is provided with a filling pad (110), the filling pad (110) is distributed inside the valve body (101).

5. The ball valve locking device of claim 4, wherein: One end of the valve body (101) is provided with a connecting sleeve (111).

6. The ball valve locking device of claim 2, wherein: The top end of the gas pipe (202) is sleeved with a gas valve sleeve (203), the gas sealing ring (204) is arranged at the connection between the inside of the gas valve sleeve (203) and the top end of the gas pipe (202).

7. The ball valve locking device of claim 6, wherein: The inside of the gas pipe (202) is provided with a gas valve core (205), the top of the gas valve core (205) is connected with the inside of the gas valve sleeve (203).

8. The ball valve locking device of claim 1, wherein: The external connection mechanism (3) includes a first connecting pipe (301) and a second connecting pipe (303), the first connecting pipe (301) is connected to one end of the valve body (101), one end of the first connecting pipe (301) is provided with a first connecting head (302).

9. The ball valve locking device of claim 8, wherein: The second connecting pipe (303) is connected to the other end of the valve body (101), one end of the second connecting pipe (303) is provided with a second connecting head (304).

10. The ball valve locking device of claim 9, wherein: The outside of the first connecting head (302) and the second connecting head (304) is provided with a connecting flange plate.

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