A pipeline ball valve

Abstract

The utility model discloses a pipeline ball valve, which comprises a ball valve shell, the pipeline ball valve is characterized in that the two ends of the ball valve shell are provided with connecting pipes, the circumferential inner walls of the two connecting pipes are provided with sealing assemblies, the top of the circumferential outer wall of the ball valve shell is rotationally connected with a pipeline ball valve rod, the bottom of the pipeline ball valve rod is provided with a pipeline ball valve ball body located on the circumferential inner wall of the ball valve shell, the top of the circumferential outer wall of the ball valve shell is provided with a stabilizing assembly, the sealing ring is extruded by abutting against the stop ring after the threaded pipe is screwed into the connecting pipe, so that the sealing effect is enhanced, the sealing filler is injected into the annular groove from the through groove, the connection stability of the pipeline ball valve and the pipeline is improved, the sealing filler is compensated for wear to prevent leakage, the ball valve seat connected to the inner ring of the bearing seat rotates when the pipeline ball valve ball body rotates, the stability of the valve rod and the valve ball during rotation is improved, the valve ball is prevented from deviating and wearing during large torque operation, and the service life of the valve is improved.

Description

Technical Field

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

[0002] Pipeline ball valves are suitable for use in pipelines in various working conditions such as petroleum, chemical, and thermal power plants to cut off or connect media. The applicable media for pipeline ball valves include petroleum, purified natural gas, acidic natural gas, coal gas, water, and coal slurry, etc. The driving devices of pipeline ball valves can be operated manually, by worm gear, pneumatically, electrically, and by pneumatic-hydraulic linkage.

[0003] The prior art patent document with publication number CN222502749U provides a pipeline ball valve, including a pipeline ball valve body, a pipeline ball valve stem inside the pipeline ball valve body, and a ball valve body slidably connected to the inner wall of the pipeline ball valve body. Multiple O-rings on the sealing cover seal the space between the sealing cover and the pipeline ball valve stem. A spiral wound gasket further seals the space between the sealing cover and the pipeline ball valve body. Furthermore, the use of soft sealing rings, metal sealing rings, and fireproof rings achieves a highly efficient sealing effect between the ball valve body and the pipeline ball valve body. Therefore, this pipeline ball valve has a multi-seal structure, improving fire resistance, ensuring the sealing performance of the pipeline ball valve inside and out, and reducing potential safety hazards in practical applications.

[0004] Although the existing technology has many advantages, the following problems still exist: During the use of this device, the connection between the pipeline ball valve and the pipeline is only made by the connecting seat and the threaded connecting groove, which is not good enough. After long-term use and wear, it is easy to leak; secondly, when the device is operated with high torque, the valve stem may deviate, which will cause the valve ball to deviate and wear, affecting the valve life. Improvement is needed. In view of this, we propose a pipeline ball valve. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the issues mentioned above regarding the insufficient sealing effect of ball valves connected to pipelines solely by connecting seats and threaded grooves, which lead to leakage after long-term use and wear, and the potential for valve stem misalignment during high-torque operation, resulting in ball misalignment and wear and affecting valve life, this utility model is proposed.

[0008] Therefore, the purpose of this utility model is to provide a pipeline ball valve that facilitates improved connection stability between the pipeline ball valve and the pipeline, enhances sealing effect, facilitates wear compensation to prevent easy leakage, improves the stability of the valve stem and valve ball during rotation, avoids valve ball offset wear during high torque operation, and improves valve life.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] A pipeline ball valve includes a ball valve body, with connecting pipes at both ends of the ball valve body. Each connecting pipe has a sealing assembly on its inner circumferential wall, each sealing assembly including a retaining ring and a sealing ring on its sidewall. A threaded groove is formed on the inner circumferential wall of each connecting pipe, and a threaded pipe is threadedly connected to the inner circumferential wall of the connecting pipe. A connector is provided at one end of the outer circumferential wall of the threaded pipe, with multiple through grooves and multiple annular grooves on its outer circumferential wall. A pipeline ball valve stem is rotatably connected to the top of the outer circumferential wall of the ball valve body. A pipeline ball valve ball located on the inner circumferential wall of the ball valve body is located at the bottom of the pipeline ball valve stem. A stabilizing assembly is provided at the top of the outer circumferential wall of the ball valve body. The threaded connection between the threaded pipe and the connecting pipe facilitates disassembly and assembly, and is convenient for maintenance.

[0012] In a preferred embodiment of the pipeline ball valve of this utility model, the stabilizing component includes a connecting seat, the top of which has multiple connecting grooves, the bottom of the inner circumference of the ball valve housing is provided with a bearing seat, the top of the inner ring of the bearing seat is provided with a ball valve seat, and the top of the ball valve seat is provided with a positioning groove.

[0013] In a preferred embodiment of the pipeline ball valve of this utility model, one end of the outer circumference of the connecting pipe is inclined, and the size and position of one end of the outer circumference of the connecting pipe match the size and position of the end face of the connector.

[0014] In a preferred embodiment of the pipeline ball valve of this utility model, the plurality of through grooves are arranged in a ring array, and the size and position of the through grooves match the size and position of the ring grooves.

[0015] In a preferred embodiment of the pipeline ball valve of this utility model, the through groove and the annular groove are filled with sealing filler, and the sealing filler is made of flexible polyurethane resin.

[0016] In a preferred embodiment of the pipeline ball valve of this utility model, the size and position of the pipeline ball valve stem match the size and position of the inner wall of the connecting seat, and the bearing seat is located in the inner groove at the bottom of the inner wall of the ball valve body.

[0017] In a preferred embodiment of the pipeline ball valve of this utility model, the size of the pipeline ball valve ball matches the size of the inner cavity of the ball valve body, and the size and position of the positioning groove match the size and position of the pipeline ball valve ball.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This type of pipeline ball valve, after being screwed into the connecting pipe through a threaded pipe, abuts against the retaining ring and squeezes the sealing ring, which facilitates the enhancement of the sealing effect. By injecting sealing packing from the through groove into the ring groove, the connection stability between the pipeline ball valve and the pipeline can be improved, and the sealing packing can compensate for wear and prevent leakage.

[0021] This type of pipeline ball valve features a ball seat connected to the inner ring of the bearing housing that rotates along with the ball body, improving the stability of the valve stem and ball rotation, preventing ball offset and wear during high-torque operation, and extending valve life. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the overall structure of a pipeline ball valve according to the present invention;

[0024] Figure 2 This is a schematic diagram showing the disassembled structure of the sealing assembly of a pipeline ball valve according to the present invention.

[0025] Figure 3 This is a cross-sectional schematic diagram of the connecting pipe structure of a pipeline ball valve according to the present invention;

[0026] Figure 4 This is a cross-sectional schematic diagram of the sealing assembly structure of a pipeline ball valve according to the present invention;

[0027] Figure 5 This is a schematic diagram showing the structural breakdown of the stabilizing component of a pipeline ball valve according to this utility model.

[0028] The following are the labels in the diagram: 1. Ball valve body; 2. Connecting pipe; 3. Sealing assembly; 4. Pipeline ball valve stem; 5. Stabilizing assembly; 301. Retaining ring; 302. Sealing ring; 303. Threaded groove; 304. Threaded pipe; 305. Connector; 306. Through groove; 307. Ring groove; 501. Connecting seat; 502. Connecting groove; 503. Bearing seat; 504. Ball valve seat; 505. Positioning groove. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0031] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0034] This utility model provides an overall structural schematic diagram of an embodiment of a pipeline ball valve, including:

[0035] Please see Figures 1-5This embodiment of a pipeline ball valve includes a ball valve body 1. Connecting pipes 2 are welded to both ends of the ball valve body 1. The connecting pipes 2 are for sealing connection with threaded pipes 304 at the ends of the pipeline. Sealing components 3 are welded to the inner circumference of both connecting pipes 2. Each sealing component 3 includes a retaining ring 301 for stable contact with the threaded pipe 304. A sealing ring 302 is welded to the side wall of the retaining ring 301 to improve sealing performance under the compression of the threaded pipe 304. A threaded groove 303 is formed on the inner circumference of the connecting pipe 2, and the threaded pipe 304 is threadedly connected to the inner circumference of the connecting pipe 2. The threaded groove 303 is for threaded connection with the threaded pipe 304. One end of the outer circumference of the threaded pipe 304... A connector 305 is welded on, which is used to connect with the connecting pipe 2. The outer circumference of the connector 305 has multiple through grooves 306, which are used to inject sealing filler into the annular grooves 307. One end of the outer circumference of the connecting pipe 2 has multiple annular grooves 307, which are used to improve the sealing effect after the sealing filler is injected. A pipeline ball valve stem 4 is rotatably connected to the top of the outer circumference of the ball valve body 1. The pipeline ball valve stem 4 is used to control the rotation of the pipeline ball valve ball under the drive device. The bottom of the pipeline ball valve stem 4 is welded to the pipeline ball valve ball located on the inner circumference of the ball valve body 1. The pipeline ball valve ball is used to control the opening and closing of the pipeline. A stabilizing component 5 is welded to the top of the outer circumference of the ball valve body 1.

[0036] It is worth noting that, in order to prevent wear on the ball of the pipeline ball valve, the stabilizing component 5 specifically includes a connecting seat 501. The connecting seat 501 has multiple connecting grooves 502 on its top. The connecting grooves 502 are for screwing in bolts to connect and install the connecting seat 501 with components such as worm gear drive, pneumatic, electric, and pneumatic-hydraulic linkage. A bearing seat 503 is welded to the bottom of the inner circumference of the ball valve body 1. The bearing seat 503 is to make the rotation of the pipeline ball valve ball more stable and avoid wear caused by deviation. A ball valve seat 504 is welded to the top of the inner ring of the bearing seat 503. The ball valve seat 504 is for receiving the pipeline ball valve ball. A positioning groove 505 is opened on the top of the ball valve seat 504. The positioning groove 505 is for connecting with the pipeline ball valve ball.

[0037] Next, in order to make the connection between the pipeline ball valve and the pipeline tighter, specifically, one end of the outer circumference of the connecting pipe 2 is inclined. The size and position of one end of the outer circumference of the connecting pipe 2 match the size and position of the end face of the connector 305. The inclined end of the connecting pipe 2, which matches the size and position of the end face of the connector 305, facilitates a tight connection between the connector 305 and the connecting pipe 2, thereby improving the sealing effect.

[0038] Meanwhile, to prevent the tearing crack from expanding, specifically, multiple through grooves 306 are arranged in a ring array. The size and position of the through grooves 306 match the size and position of the ring grooves 307. The multiple through grooves 306 arranged in a ring array facilitate more uniform injection of the sealing packing. The through grooves 306 that match the size and position of the ring grooves 307 prevent the sealing packing from being unable to enter the ring grooves 307.

[0039] Furthermore, to improve the sealing effect, specifically, the through groove 306 and the annular groove 307 are filled with sealing filler. The sealing filler is made of flexible polyurethane resin. After curing, the flexible polyurethane resin sealing filler is elastic, can withstand extremely high pressure, and has slight expansion, which helps to fill tiny gaps and is resistant to chemical solvents.

[0040] It is worth noting that, in order to prevent the fluid inside the pipeline ball valve from passing through in a closed state, specifically, the size and position of the pipeline ball valve stem 4 are matched with the size and position of the inner wall of the connecting seat 501. The bearing seat 503 is located in the inner groove at the bottom of the inner wall of the ball valve body 1. Through the pipeline ball valve stem 4, which is matched with the size and position of the inner wall of the connecting seat 501, external impurities are prevented from entering and wearing the pipeline ball valve ball along the gap between the connecting seat 501 and the pipeline ball valve stem 4. Through the bearing seat 503 located in the inner groove at the bottom of the inner wall of the ball valve body 1, the protrusion of the bearing seat 503 is prevented from creating gaps that allow the internal fluid to pass through.

[0041] Finally, to prevent fluid leakage inside the pipeline ball valve under closed conditions, specifically, the size of the pipeline ball valve ball matches the size of the inner cavity of the ball valve body 1, and the size and position of the positioning groove 505 match the size and position of the pipeline ball valve ball. By using a pipeline ball valve ball that matches the size of the inner cavity of the ball valve body 1, the pipeline ball valve's sealing control effect on the pipeline is not insufficient. By using a pipeline ball valve ball whose size and position match the pipeline ball valve ball, gaps that could lead to pipeline ball valve leakage are avoided.

[0042] Combination Figures 1-5 The specific usage process of a pipeline ball valve according to this embodiment is as follows:

[0043] 1: When this device is needed for use as a pipeline ball valve, weld the threaded pipe 304 and connector 305 to the required pipeline, screw the threaded pipe 304 into the inner circumference of the connecting pipe 2, the threaded pipe 304 abuts against the retaining ring 301 and squeezes the sealing ring 302, the end of the connecting pipe 2 is inserted into the connector 305, and the sealing filler is injected from the through groove 306 into the ring groove 307. After long-term use and wear, the sealing filler should be replenished.

[0044] 2: Screw the bolts into the connecting groove 502 to connect and install the connecting seat 501 with components such as worm gear drive, pneumatic, electric, and pneumatic-hydraulic linkage. Weld the bearing seat 503 to the bottom of the inner wall of the ball valve body 1. Weld the ball valve seat 504, which is welded to the ball of the pipeline ball valve, to the top of the inner ring of the bearing seat 503. When the ball of the pipeline ball valve rotates, the inner ring of the bearing seat 503 rotates accordingly to ensure that the ball of the pipeline ball valve does not deviate.

[0045] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pipeline ball valve, characterized in that, The valve includes a ball valve body (1), with connecting pipes (2) at both ends. Each connecting pipe (2) has a sealing assembly (3) on its inner circumference. The sealing assembly (3) includes a retaining ring (301) and a sealing ring (302) on its sidewall. A threaded groove (303) is formed on the inner circumference of each connecting pipe (2), and a threaded pipe (304) is threaded onto the inner circumference of each connecting pipe (2). A connector (305) is provided at one end of the outer wall of the ball valve. Multiple through grooves (306) are provided on the outer wall of the connector (305). Multiple annular grooves (307) are provided at one end of the outer wall of the connecting pipe (2). A pipeline ball valve stem (4) is rotatably connected to the top of the outer wall of the ball valve housing (1). A pipeline ball valve ball located on the inner wall of the ball valve housing (1) is provided at the bottom of the pipeline ball valve stem (4). A stabilizing component (5) is provided at the top of the outer wall of the ball valve housing (1).

2. The pipeline ball valve according to claim 1, characterized in that, The stabilizing component (5) includes a connecting seat (501), the top of which is provided with multiple connecting grooves (502), the bottom of the inner wall of the ball valve housing (1) is provided with a bearing seat (503), the top of the inner ring of the bearing seat (503) is provided with a ball valve seat (504), and the top of the ball valve seat (504) is provided with a positioning groove (505).

3. The pipeline ball valve according to claim 2, characterized in that, One end of the outer circumference of the connecting pipe (2) is inclined, and the size and position of one end of the outer circumference of the connecting pipe (2) match the size and position of the end face of the connector (305).

4. The pipeline ball valve according to claim 3, characterized in that, The multiple through slots (306) are arranged in a ring array, and the size and position of the through slots (306) match the size and position of the ring slots (307).

5. The pipeline ball valve according to claim 4, characterized in that, The through groove (306) and the annular groove (307) are filled with sealing filler, and the sealing filler is made of flexible polyurethane resin.

6. The pipeline ball valve according to claim 5, characterized in that, The dimensions and position of the pipeline ball valve stem (4) match the dimensions and position of the inner wall of the connecting seat (501), and the bearing seat (503) is located in the inner groove at the bottom of the inner wall of the ball valve body (1).

7. The pipeline ball valve according to claim 6, characterized in that, The size of the ball of the pipeline ball valve matches the size of the inner cavity of the ball valve housing (1), and the size and position of the positioning groove (505) match the size and position of the ball of the pipeline ball valve.

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