Ball valve with high sealing

Abstract

The utility model relates to ball valve technical field, concretely relates to a ball valve of high sealing property, including ball valve body and auxiliary mechanism, auxiliary mechanism includes sealing seat, connecting pipe, first sealing washer, first sealing ring and second sealing washer, first install sealing seat in the ladder groove of ball valve body two sides when using, sealing seat and ball valve body contact surface directly adopt sealing glue cooperation, then install first sealing washer in sealing seat, and first sealing ring is installed in the installation groove of connecting pipe, then is inserted and is installed in the both sides of ball valve body through the cooperation of alignment mechanism, finally is fixed through screw rod nut connection, the connecting pipe of the application will form multiple sealing structure through first sealing washer, second sealing washer, first sealing ring etc. after installation, can greatly improve the sealing property after connecting pipe and ball valve body connection, and then solved the problem that the sealing property between ball valve and pipeline is lower after butt joint installation of prior art ball valve, and the practicability is not good.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve with high sealing performance. Background Technology

[0002] Ball valves are commonly used components in pipeline transportation under current technology, and are mostly used for shut-off control when transporting liquid or gas media.

[0003] A search revealed that prior art CN210661462U discloses a ball valve that facilitates packing replacement. Through the arrangement of a moving plate, positioning rod, positioning through hole, spring, and fixed end cap, the fixed end cap is removed from the cylinder. The spring lifts the moving plate, making it easy to remove the old packing from the cylinder and replace it with new packing, reducing the workload of personnel. Furthermore, the arrangement of the handle, placement groove, sliding groove, connecting column, valve stem, and clamping plate prevents accidental contact with the handle, avoids valve stem rotation that could alter the ball valve's operating state, and prevents accidents.

[0004] However, the applicant found that after the ball valve was installed, the sealing performance between the ball valve and the pipeline was poor, resulting in poor usability. Utility Model Content

[0005] The purpose of this invention is to provide a ball valve with high sealing performance, which solves the problem that existing ball valves have low sealing performance between the ball valve and the pipeline after docking and installation, resulting in poor practicality.

[0006] To achieve the above objectives, this utility model provides a ball valve with high sealing performance, including a ball valve body and an auxiliary mechanism; The auxiliary mechanism includes a sealing seat, a connecting pipe, a first sealing gasket, and a first sealing ring. The first sealing gasket is installed at the bottom of the sealing seat and abuts against the end of the connecting pipe. The first sealing ring is sleeved on the connecting pipe and slidably connected to the sealing seat. The connecting pipe is detachably connected to the ball valve body. An alignment mechanism is symmetrically arranged between the ball valve body and the connecting pipe. A second sealing gasket is provided between the connecting flange of the connecting pipe and the connecting flange of the ball valve body.

[0007] The sealing seat is also fitted with a second sealing ring, which is slidably connected to the connecting pipe and is symmetrically arranged with the first sealing ring.

[0008] The alignment mechanism includes a reference block and a mating device. The reference block is integrally mounted on the connecting flange of the ball valve body and is arranged symmetrically. The mating device is located on the side of the connecting pipe near the reference block.

[0009] The fitting device includes a plug block and a plug rod. The plug block is integrally formed with the connecting flange of the connecting pipe and fits against the reference block, and the plug rod is screwed on. The plug rod is slidably connected to the reference block.

[0010] The sealing seat is integrally provided with a flow guide block at the inner end of the ball valve body, and the flow guide block is provided with a flow guide slope.

[0011] This utility model discloses a high-sealing ball valve. In use, sealing seats are first installed in the stepped grooves on both sides of the ball valve body. The contact surfaces of the sealing seats and the ball valve body are directly fitted with sealant. Then, a first sealing gasket is installed inside the sealing seat, and a first sealing ring is fitted into the mounting groove of the connecting pipe. The connecting pipe is then inserted and installed on both sides of the ball valve body using an alignment mechanism. Finally, it is fixed by screws and nuts. After installation, the connecting pipe of this application forms a multi-layered sealing structure through the first sealing gasket, second sealing gasket, and first sealing ring, which greatly improves the sealing performance after the connecting pipe is connected to the ball valve body. This solves the problem of low sealing performance and poor practicality of existing ball valves after butt joint installation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the high-sealing ball valve according to the first embodiment of this utility model.

[0014] Figure 2 This is a schematic diagram showing the placement of the first sealing gasket according to the first embodiment of this utility model.

[0015] Figure 3 This is a schematic diagram of the flow guide block according to the second embodiment of the present invention.

[0016] In the figure: 101-ball valve body, 102-sealing seat, 103-connecting pipe, 104-first sealing gasket, 105-first sealing ring, 106-second sealing gasket, 107-second sealing ring, 108-reference block, 109-insertion block, 110-insertion rod, 201-guide block, 202-guide slope. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. Example 1:

[0018] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of a high-sealing ball valve. Figure 2 This is a schematic diagram showing the placement of the first sealing gasket. This utility model provides a high-sealing ball valve, comprising a ball valve body 101 and an auxiliary mechanism. The auxiliary mechanism includes a sealing seat 102, a connecting pipe 103, a first sealing gasket 104, a first sealing ring 105, a second sealing gasket 106, and a second sealing ring 107. The alignment mechanism includes a reference block 108 and a mating device, the mating device including a plug block 109 and a plug rod 110. This solution solves the problem of low sealing performance and poor practicality of existing ball valves after docking installation. It is understood that this solution can improve the sealing performance after the connecting pipe 103 is installed.

[0019] In this embodiment, stepped cavities are provided on both sides of the ball valve body 101. After the sealing seat 102 is installed, the second sealing gasket 106 can further form a sealing structure on the outside of the contact point between its end face and the flange of the connecting pipe 103. In addition, the standard parts used in this application can all be purchased from the market, and can all be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, which are common knowledge in the field, so this application will not elaborate further.

[0020] The sealing seat 102 has a first sealing gasket 104 installed at its bottom, which abuts against the end of the connecting pipe 103. A first sealing ring 105 is fitted onto the connecting pipe 103 and slidably connected to the sealing seat 102. The connecting pipe 103 is detachably connected to the ball valve body 101. A symmetrical alignment mechanism is provided between the ball valve body 101 and the connecting pipe 103. A second sealing gasket 106 is provided between the connecting flange of the connecting pipe 103 and the connecting flange of the ball valve body 101. The sealing seat 102 is fixed within the mounting stepped cavities on both sides of the ball valve body 101 by two symmetrically arranged locating pins and four locking countersunk bolts. The first sealing gasket 104 is used to seal the port of the connecting pipe 103 after installation. The first sealing ring 105 is used to increase the sealing structure. The connecting flange of the connecting pipe 103 is connected to the connecting flange of the ball valve body 101 using a screw and nut. The second sealing gasket 106 is directly set in the mounting groove of the connecting flange of the ball valve body 101. After the connecting pipe 103 is installed, it is used to seal the connection between the connecting flange of the connecting pipe 103 and the connecting flange of the ball valve body 101, thereby forming the last sealing barrier to ensure a stable seal after the connecting pipe 103 and the ball valve body 101 are connected.

[0021] Secondly, the second sealing ring 107 is slidably connected to the connecting pipe 103 and is symmetrically arranged with the first sealing ring 105. The second sealing ring 107 is used to further enhance the sealing structure and is directly installed on the sealing seat 102. In this application, all corresponding sealing elements are made of rubber, and all corresponding sealing elements are O-ring structures.

[0022] Then, the reference block 108 is integrally mounted on the connecting flange of the ball valve body 101 and arranged symmetrically; the mating device is located on the side of the connecting pipe 103 near the reference block 108. The reference block 108 is provided with a through hole, and the mating device is used for alignment and mating.

[0023] Finally, the connector block 109 is integrally formed with the connecting flange of the connecting pipe 103 and fits against the reference block 108, and the connector rod 110 is screwed on; the connector rod 110 is slidably connected to the reference block 108. The stepped external thread end of the connector rod 110 directly mates with the threaded hole on the connector block 109 to achieve installation.

[0024] When using this utility model to solve the problem of low sealing performance and poor practicality of existing ball valves after docking installation, the sealing seat 102 is first installed in the stepped grooves on both sides of the ball valve body 101. The contact surface between the sealing seat 102 and the ball valve body 101 is directly fitted with sealant. Then, the first sealing gasket 104 is installed in the sealing seat 102, and the first sealing ring 105 is fitted into the mounting groove of the connecting pipe 103. At the same time, the second sealing ring 107 is installed in the mounting groove of the sealing seat 102. Then, through... The alignment mechanism cooperates to insert and install the connecting pipe 103 on both sides of the ball valve body 101, and finally connects and fixes it with screws and nuts. During installation, the second sealing gasket 106 needs to be installed in advance. After the connecting pipe 103 of this application is installed, it will form a multi-seal structure through the first sealing gasket 104, the second sealing gasket 106, the first sealing ring 105, etc., which can greatly improve the sealing performance after the connecting pipe 103 is connected to the ball valve body 101, thereby solving the problem that the existing ball valve has low sealing performance and poor practicality after docking installation. Example 2:

[0025] like Figure 3 As shown, where Figure 3 This is a schematic diagram of the flow guide block. Based on the first embodiment, this utility model provides a ball valve with high sealing performance. The sealing seat 102 is integrally provided with a flow guide block 201 on the inner end of the ball valve body 101, and the flow guide block 201 is provided with a flow guide slope 202.

[0026] In this embodiment, the flow guide block 201 enables better guidance of the gas-liquid medium. Furthermore, an O-ring seal can be fitted onto the annular end of the flow guide block 201 that contacts the inner wall of the ball valve body 101, further enhancing the sealing structure after the sealing seat 102 is installed and improving sealing performance. The flow guide block 202 is trumpet-shaped with a medium channel inside.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A high-sealing ball valve, comprising a ball valve body, characterized in that, It also includes auxiliary mechanisms; The auxiliary mechanism includes a sealing seat, a connecting pipe, a first sealing gasket, and a first sealing ring. The first sealing gasket is installed at the bottom of the sealing seat and abuts against the end of the connecting pipe. The first sealing ring is sleeved on the connecting pipe and slidably connected to the sealing seat. The connecting pipe is detachably connected to the ball valve body. An alignment mechanism is symmetrically arranged between the ball valve body and the connecting pipe. A second sealing gasket is provided between the connecting flange of the connecting pipe and the connecting flange of the ball valve body.

2. The high-sealing ball valve as described in claim 1, characterized in that, A second sealing ring is also fitted onto the sealing seat. The second sealing ring is slidably connected to the connecting pipe and is symmetrically arranged with the first sealing ring.

3. The high-sealing ball valve as described in claim 1, characterized in that, The alignment mechanism includes a reference block and a mating device. The reference block is integrally mounted on the connecting flange of the ball valve body and is arranged symmetrically. The mating device is located on the side of the connecting pipe near the reference block.

4. The high-sealing ball valve as described in claim 3, characterized in that, The mating device includes a plug block and a plug rod. The plug block is integrally formed with the connecting flange of the connecting pipe and fits against the reference block, and the plug rod is screwed on. The plug rod is slidably connected to the reference block.

5. The high-sealing ball valve as described in claim 1, characterized in that, The sealing seat is integrally provided with a flow guide block at the inner end of the ball valve body, and the flow guide block is provided with a flow guide slope.

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