A leak-proof ball valve

Abstract

The utility model relates to a kind of anti-leakage ball valves, belong to ball valve technical field.The anti-leakage ball valve includes: valve cavity, the both ends of the valve cavity are fixedly connected with communicating pipe, the inside of communicating pipe is communicated with the inside of valve cavity;Locking mechanism, the locking mechanism is installed in the inside of valve cavity, the surface of the locking mechanism is penetrated valve cavity and extends to the top of valve cavity;Wherein, the locking mechanism includes locking assembly installed in the inside of valve cavity, the locking assembly surface is connected with sealing assembly, the sealing assembly is installed in the top of locking assembly;The above-mentioned anti-leakage ball valve, the stability of the rotation of outer sleeve is assisted to keep by the inner wall of bottom hole and the surface of fixed column, rubber ring is embedded in the inner wall of valve cavity so that the effect that rubber strip and outer sleeve are closely attached, and then the surface of outer sleeve cannot have a large amount of liquid appear penetration leakage, improve the locking effect of valve ball, prolong the service life of device.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a leak-proof ball valve. Background Technology

[0002] In industry, "gas extraction and refining" usually refers to the process of extracting and refining natural gas, shale gas and other gas reservoirs into industrial gases or chemical raw materials. It involves a variety of process technologies and equipment. China National Petroleum Corporation (CNPC) uses processes such as drainage gas extraction, wellbore unblocking, and sand control to improve the recovery rate of deep / shale gas fields by adopting full life cycle gas extraction technology, including fracturing and intelligent monitoring.

[0003] A ball valve is a valve driven by a valve stem that rotates around the valve axis. It can also be used for fluid regulation and control. Among them, the hard-seal V-type ball valve has a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making it particularly suitable for media containing fibers, small solid particles, etc. Multi-port ball valves can not only flexibly control the merging, splitting, and switching of the flow direction of media in pipelines, but also close any channel while connecting the other two channels.

[0004] A search of existing Chinese patent technology for "ball valve anti-leakage structure" (publication number CN219692307U) reveals that this device can detect whether there is leakage in the ball valve through a sensing ring, and the controller can disconnect the flow block at any time. The baffle can conveniently block the water inflow from both sides of the ball valve during maintenance and adjustment, reducing the trouble caused by maintenance. However, during the use of this device, liquid seepage and leakage can occur on the surface of the ball, affecting the service life of the valve body. Utility Model Content

[0005] Therefore, it is necessary to provide a leak-proof ball valve to address the issue of liquid seepage and leakage on the surface of the ball during use, which affects the service life of the valve body.

[0006] A leak-proof ball valve is provided, comprising: a valve cavity, both ends of which are fixedly connected to a connecting pipe, the interior of which communicates with the interior of the valve cavity; a locking mechanism, which is installed inside the valve cavity, the surface of which penetrates the valve cavity and extends to the top of the valve cavity; wherein the locking mechanism includes a locking component installed inside the valve cavity, the surface of which is connected to a sealing component, the sealing component being installed above the locking component, the upper end of which penetrates the valve cavity and extends to the top of the valve cavity.

[0007] In one embodiment, the locking assembly includes a fixed post fixedly connected to the bottom wall of the valve cavity, an inner sphere fixedly connected to the upper end of the fixed post, a through hole on one side of the inner sphere, an outer sleeve fitted on the outer surface of the inner sphere, and two side holes on the surface of the outer sleeve that match the through hole.

[0008] In one embodiment, the sealing assembly includes a control lever fixedly connected to the upper end of an outer sleeve, an operating handle fixedly connected to the upper end of the control lever, an outer seat fitted onto the surface of the control lever, the outer seat fixedly connected to the upper end of a valve chamber, and a top cover fixedly connected to the upper end of the outer seat.

[0009] In one embodiment, a soft rubber sleeve is fixedly connected to the surface of the control lever, and a sealing rubber disc is fixedly connected to the upper end of the soft rubber sleeve. The sealing rubber disc is rotatably connected to the inner wall of the top cover.

[0010] In one embodiment, a hard rubber ring is fixedly connected to the inner wall of the outer seat, and an annular groove is formed on the surface of the soft rubber sleeve, with the inner wall of the annular groove in contact with the surface of the hard rubber ring.

[0011] In one embodiment, the locking assembly further includes two rubber rings fixedly connected to the inner wall of the valve cavity, the rubber rings being disposed between the sealing assembly and the adjacent connecting pipe.

[0012] In one embodiment, a plurality of rubber strips are fixedly connected to the inner side of the rubber ring, and the surface of the rubber strips is in contact with the surface of the outer sleeve.

[0013] In one embodiment, the lower end of the outer sleeve has a bottom hole, which is rotatably connected to the surface of the fixed post.

[0014] Beneficial effects

[0015] 1. The above-mentioned anti-leakage ball valve maintains the stability of the outer sleeve rotation by the inner wall of the bottom hole and the surface of the fixed column. The rubber ring is embedded in the inner wall of the valve cavity, which makes the rubber strip fit tightly with the outer sleeve. This prevents a large amount of liquid from seeping and leaking from the surface of the outer sleeve, improves the locking effect of the valve ball, and extends the service life of the device.

[0016] 2. The soft rubber sleeve and the external seat form a seal, which prevents the flow of the control lever from causing sealing deviation, thus improving the performance and reducing leakage. The ring groove and the hard rubber ring match to form a better sealing effect for leaked liquid. At the same time, the sealing rubber plate and the top cover further enhance the anti-leakage effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the explosion-proof structure of the locking mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of a partial explosion of the locking assembly of this utility model;

[0021] Figure 4 A schematic diagram showing the bottom hole of this utility model;

[0022] Figure 5 This is an exploded cross-sectional view of the sealing component of this utility model.

[0023] Figure label:

[0024] 1. Valve cavity; 2. Connecting pipe; 3. Locking mechanism; 31. Locking assembly; 311. Fixing post; 312. Inner ball; 313. Through hole; 314. Rubber ring; 315. Rubber strip; 316. Outer sleeve; 317. Bottom hole; 318. Side hole; 32. Sealing assembly; 321. Control lever; 322. Operating handle; 323. Outer seat; 324. Top cover; 325. Hard rubber ring; 326. Soft rubber sleeve; 327. Ring groove; 328. Sealing disc. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The following is combined with Figures 1-5 This invention describes a leak-proof ball valve.

[0027] In one embodiment, a leak-proof ball valve includes: a valve cavity 1, with connecting pipes 2 fixedly connected to both ends of the valve cavity 1, the interior of the connecting pipes 2 communicating with the interior of the valve cavity 1; a locking mechanism 3, installed inside the valve cavity 1, the surface of the locking mechanism 3 penetrating the valve cavity 1 and extending above the valve cavity 1; wherein, the locking mechanism 3 includes a locking assembly 31 installed inside the valve cavity 1, a sealing assembly 32 connected to the surface of the locking assembly 31, the sealing assembly 32 being installed above the locking assembly 31, the upper end of the sealing assembly 32 penetrating the valve cavity 1 and extending above the valve cavity 1;

[0028] It should be noted that: in the high-pressure and high-temperature environment of hydrogen-containing refining units in industry, forged steel ball valves are required to avoid the risk of media leakage. In the hydrorefining unit, the fixed ball valves are surface hardened to improve wear resistance and adapt to high-frequency switching operation. The slurry conveying pipeline uses ball valves with anti-scaling design, which can break through the deposit barrier when closed to ensure process continuity. The operating control lever 321 is rotated 90 degrees to open or close the valve. Rotating it clockwise by a quarter turn closes the valve, and rotating it counterclockwise by a quarter turn opens the valve.

[0029] like Figure 1-4 As shown, the locking assembly 31 includes a fixed post 311 fixedly connected to the bottom wall of the valve cavity 1. An inner ball 312 is fixedly connected to the upper end of the fixed post 311. A through hole 313 is opened on one side of the inner ball 312. An outer sleeve 316 is fitted on the outer surface of the inner ball 312. Two side holes 318 are opened on the surface of the outer sleeve 316. The side holes 318 match the through hole 313. The locking assembly 31 also includes two rubber rings 314 fixedly connected to the inner wall of the valve cavity 1. The rubber rings 314 are disposed between the sealing assembly 32 and the adjacent connecting pipe 2. Multiple rubber strips 315 are fixedly connected to the inner side of the rubber rings 314. The surface of the rubber strips 315 contacts the surface of the outer sleeve 316. A bottom hole 317 is opened at the lower end of the outer sleeve 316. The bottom hole 317 is rotatably connected to the surface of the fixed post 311.

[0030] In this embodiment, the device drives the outer sleeve 316 to rotate synchronously when the sealing component 32 rotates. When the outer sleeve 316 rotates, the inner wall of the bottom hole 317 and the surface of the fixed post 311 help maintain the stability of the rotation of the outer sleeve 316, while the side hole 318 and the through hole 313 are connected. When closed, the side hole 318 and the through hole 313 are misaligned.

[0031] Furthermore, the rubber ring 314 is embedded in the inner wall of the valve cavity 1, which makes the rubber strip 315 fit tightly with the outer sleeve 316, thereby preventing a large amount of liquid from seeping and leaking onto the surface of the outer sleeve 316, thus improving the locking effect of the valve ball.

[0032] like Figure 2 , Figure 4 and Figure 5 As shown, the sealing assembly 32 includes a control lever 321 fixedly connected to the upper end of the outer sleeve 316. An operating handle 322 is fixedly connected to the upper end of the control lever 321. An outer seat 323 is sleeved on the surface of the control lever 321. The outer seat 323 is fixedly connected to the upper end of the valve chamber 1. A top cover 324 is fixedly connected to the upper end of the outer seat 323. A soft rubber sleeve 326 is fixedly connected to the surface of the control lever 321. A sealing rubber disc 328 is fixedly connected to the upper end of the soft rubber sleeve 326. The sealing rubber disc 328 is rotatably connected to the inner wall of the top cover 324. A hard rubber ring 325 is fixedly connected to the inner wall of the outer seat 323. An annular groove 327 is formed on the surface of the soft rubber sleeve 326. The inner wall of the annular groove 327 is in contact with the surface of the hard rubber ring 325.

[0033] In this embodiment, the device controls the outer sleeve 316 via a control lever 321, and the soft rubber sleeve 326 forms a seal with the outer seat 323, preventing the control lever 321 from causing sealing deviation, thus improving the performance and reducing leakage. Furthermore, the annular groove 327 on the surface of the soft rubber sleeve 326 matches the hard rubber ring 325, providing a better leak-proof effect against leaked liquid. At the same time, the sealing rubber disc 328, together with the top cover 324, further enhances the leak-proof effect against liquid.

[0034] Working principle: The outer sleeve 316 is controlled by the control lever 321. The soft rubber sleeve 326 and the outer seat 323 form a sealing effect to prevent the flow of the control lever 321 from causing sealing deviation. The annular groove 327 on the surface of the soft rubber sleeve 326 matches the hard rubber ring 325. The sealing rubber disc 328 cooperates with the top cover 324 to prevent liquid leakage. The control lever 321 drives the outer sleeve 316 to rotate synchronously. The inner wall of the bottom hole 317 and the surface of the fixed column 311 help maintain the stability of the rotation of the outer sleeve 316. The side hole 318 and the through hole 313 form a communication effect. When closed, the side hole 318 and the through hole 313 are misaligned. The rubber ring 314 is embedded in the inner wall of the valve cavity 1. The rubber strip 315 fits tightly with the outer sleeve 316, so there will be no large amount of liquid seepage and leakage on the surface of the outer sleeve 316.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leak-proof ball valve, characterized in that, include: A valve chamber (1) is provided, and two ends of the valve chamber (1) are fixedly connected to a connecting pipe (2), the inside of the connecting pipe (2) being connected to the inside of the valve chamber (1); Locking mechanism (3), the locking mechanism (3) is installed inside the valve cavity (1), the surface of the locking mechanism (3) penetrates the valve cavity (1) and extends to the top of the valve cavity (1); The locking mechanism (3) includes a locking assembly (31) installed inside the valve cavity (1). A sealing assembly (32) is connected to the surface of the locking assembly (31). The sealing assembly (32) is installed above the locking assembly (31). The upper end of the sealing assembly (32) penetrates the valve cavity (1) and extends to the top of the valve cavity (1).

2. The anti-leakage ball valve according to claim 1, characterized in that, The locking assembly (31) includes a fixed post (311) fixedly connected to the bottom wall of the valve cavity (1). An inner ball (312) is fixedly connected to the upper end of the fixed post (311). A through hole (313) is provided on one side of the inner ball (312). An outer sleeve (316) is fitted on the outer surface of the inner ball (312). Two side holes (318) are provided on the surface of the outer sleeve (316). The side holes (318) match the through hole (313).

3. The anti-leakage ball valve according to claim 2, characterized in that, The sealing assembly (32) includes a control lever (321) fixedly connected to the upper end of the outer sleeve (316). An operating handle (322) is fixedly connected to the upper end of the control lever (321). An outer seat (323) is sleeved on the surface of the control lever (321). The outer seat (323) is fixedly connected to the upper end of the valve chamber (1). A top cover (324) is fixedly connected to the upper end of the outer seat (323).

4. The anti-leakage ball valve according to claim 3, characterized in that, A soft rubber sleeve (326) is fixedly connected to the surface of the control lever (321), and a sealing rubber disc (328) is fixedly connected to the upper end of the soft rubber sleeve (326). The sealing rubber disc (328) is rotatably connected to the inner wall of the top cover (324).

5. The anti-leakage ball valve according to claim 4, characterized in that, The inner wall of the outer seat (323) is fixedly connected with a hard rubber ring (325), and the surface of the soft rubber sleeve (326) is provided with an annular groove (327), the inner wall of the annular groove (327) is in contact with the surface of the hard rubber ring (325).

6. The anti-leakage ball valve according to claim 2, characterized in that, The locking assembly (31) also includes two rubber rings (314) fixedly connected to the inner wall of the valve chamber (1), and the rubber rings (314) are disposed between the sealing assembly (32) and the adjacent connecting pipe (2).

7. The anti-leakage ball valve according to claim 6, characterized in that, Multiple rubber strips (315) are fixedly connected to the inner side of the rubber ring (314), and the surface of the rubber strips (315) is in contact with the surface of the outer sleeve (316).

8. The anti-leakage ball valve according to claim 7, characterized in that, The lower end of the outer sleeve (316) is provided with a bottom hole (317), and the bottom hole (317) is rotatably connected to the surface of the fixed post (311).

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