Ball valve rubber sealing piece structure

Abstract

The utility model discloses a rubber sealing element structure of a ball valve, relates to the technical field of ball valves, and aims to solve the technical problems that a built-in sealing element of the current ball valve is inconvenient to effectively adjust the fitting degree in a self-adaptive manner, and the sealing effect is influenced, the rubber sealing element structure of the ball valve comprises a connecting piece, a valve body shell and a sealing assembly, a ball opening is formed in the upper end face of the valve body shell, a valve ball is arranged in the ball opening, assembling openings are formed in the two ends of the valve body shell and communicate with the ball opening, a rotating disc is arranged on the upper end face of the valve body shell, a rotating shaft of the rotating disc is connected with the valve ball, and the connecting piece is installed on the end face of the valve body shell through bolts. And the built-in cylinders of the two sealing assemblies are respectively inserted into the corresponding assembly ports. The self-adaptive sealing structure has the advantages that the sealing elements on the inner side and the outer side are effectively attached in a self-adaptive mode, and the sealing performance is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, and more particularly to a rubber sealing structure of a ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing member is a sphere. The sphere rotates around the centerline of the valve body, opening and closing the valve passage. When the sphere's through hole aligns with the pipe, the valve opens, allowing fluid to flow smoothly. When the sphere's through hole is perpendicular to the pipe, the valve closes, preventing fluid flow.

[0003] The two end passages of a ball valve require rubber seals to connect to the valve ball. Existing methods are relatively simple, often requiring direct plug-in installation. This installation method makes it difficult for the seal to effectively adhere to the outer surface of the valve ball, resulting in a poor sealing effect. Furthermore, external joint seals are difficult to adjust adaptively, leading to unstable sealing at the joint. In light of this, we propose a rubber seal structure for a ball valve. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a ball valve rubber seal structure to solve the technical problem that the current ball valve built-in seal is inconvenient and ineffective in adaptively adjusting the fit, which affects the sealing effect.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a ball valve rubber sealing structure, including a connecting piece, a valve body shell and a sealing assembly, a ball opening is provided in the middle of the valve body shell, and a valve ball is provided in the ball opening, both ends of the valve body shell are provided with assembly openings, and the assembly openings are connected to the ball openings, a turntable is provided on the upper end surface of the valve body shell, and the turntable shaft is connected to the valve ball, the connecting piece is installed on the end surface of the valve body shell by bolts, and there are two sealing assemblies in total, and the built-in cylinders of the two sealing assemblies are respectively inserted into the corresponding assembly openings.

[0006] During installation, the sealing assembly is inserted into the assembly port and the valve body housing, and then the connecting piece is butted against the opening of the valve body housing and fixed by bolts. At this time, the butt joint is butted against the inner channel of the sealing assembly. When the connecting piece squeezes the outer side of the sealing assembly, the sealing assembly squeezes the spring assembly. The telescopic rod of the spring assembly and the spring compression make the inner sealing ring at the inner end of the sealing assembly fit with the valve ball. At the same time, the outer sealing ring fits against the rear side of the connecting piece. The spring assembly buffers the sealing assembly to an appropriate fitting position, ensuring that both the outer sealing ring and the inner sealing ring fit with the corresponding connection points to ensure sealing performance. The inner sealing ring is installed on the connecting ring, which is plugged into the rear end of the built-in tube. The locking rod is inserted from the lower initial end of the connecting groove, and then the connecting ring is rotated to rotate the locking rod from the initial end into the rear end of the connecting groove. At the same time, the outer notch of the locking rod is clamped with the clamping block at the rear end to achieve locking of the connecting ring. The outer sealing ring is pressed down and clamped into the notch at the front end of the built-in tube. Through a detachable assembly method, the spring assembly is cooperated with the sealing assembly to pop out outward, which facilitates the replacement of aging rubber seals and reduces maintenance difficulty.

[0007] Preferably, the assembly opening is designed in a stepped manner, and a ring array of receiving holes is provided on the stepped surface, and a spring-pressing component is provided in the receiving holes.

[0008] Preferably, the elastic pressure component is composed of a telescopic rod and a spring, and the outer end of the elastic pressure component is in contact with the inner end surface of the inner tube.

[0009] Preferably, a butt joint tube is installed through the middle of the connecting piece, and the butt joint tube corresponds to the outer end of the built-in tube.

[0010] Preferably, the sealing assembly consists of an inner tube and a connecting ring, the front end opening of the inner tube is plugged with an outer sealing ring, and the outer sealing ring fits with the inner end of the connecting tube of the connecting piece, and the rear end annular array of the inner tube is provided with a connecting groove.

[0011] Preferably, an inner sealing ring is provided at the outer end of the connecting ring, and the inner sealing ring fits against the side surface of the valve ball. A locking rod is provided in an annular array at the inner end of the connecting ring, and the locking rod is inserted into the corresponding connecting groove.

[0012] Preferably, the connecting groove is divided into an initial end and a tail end, a clamping block is provided in the tail end, and a clamping groove is provided at the outer end of the locking rod. After the locking rod rotates to the tail end, the clamping block docks with the clamping groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model designs a sealing component, which is inserted into the assembly port and the valve body shell, and then the connecting piece is docked with the opening of the valve body shell and fixed with bolts. At this time, the docking pipe docks the inner channel of the sealing component. When the connecting piece squeezes the outside of the sealing component, the sealing component squeezes the spring-pressing component. The telescopic rod and the spring of the spring-pressing component are compressed, so that the inner sealing ring at the inner end of the sealing component fits with the valve ball, and the outer sealing ring fits with the rear side of the connecting piece. The spring-pressing component is used for buffering to make the sealing component in an appropriate fitting position, ensuring that the outer sealing ring and the inner sealing ring are both fitted with the corresponding connection points to ensure sealing performance.

[0015] 2. The utility model also designs a built-in cylinder, and the inner sealing ring is installed on the connecting ring. The connecting ring is plugged into the rear end of the built-in cylinder, and the locking rod is inserted from the initial end of the lower side of the connecting groove. Then, the connecting ring is rotated to make the locking rod move from the initial end to the end end of the connecting groove. At the same time, the outer end notch of the locking rod is clamped with the clamping block at the end end to achieve the locking of the connecting ring. The outer sealing ring is pressed down and clamped in the notch at the front end of the built-in cylinder. Through a detachable assembly method, the sealing assembly is ejected outward in conjunction with the spring-pressing assembly, which facilitates the replacement of aging rubber seals and reduces the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the utility model;

[0018] Figure 3 This is a schematic diagram of the expanded structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the sealing assembly of the present utility model;

[0020] Figure 5 This is a schematic diagram of the valve body shell of the present utility model.

[0021] Explanation of the numbers in the figure: 1. Connecting piece; 101. Bolt; 102. Docking pipe; 2. Valve body shell; 201. Turntable; 202. Valve ball; 203. Assembly port; 204. Receiving hole; 205. Ball port; 3. Sealing assembly; 301. Built-in cylinder; 302. Outer sealing ring; 303. Connecting ring; 304. Inner sealing ring; 305. Locking rod; 306. Connecting groove; 4. Spring-pressing assembly. DETAILED DESCRIPTION

[0022] like Figures 1 to 4As shown, the utility model relates to a ball valve rubber seal structure, including a connecting piece 1, a valve body shell 2 and a sealing component 3, a ball port 205 is provided in the middle of the valve body shell 2, and a valve ball 202 is provided in the ball port 205, both ends of the valve body shell 2 are provided with assembly ports 203, and the assembly ports 203 are connected to the ball port 205, the assembly port 203 is designed in a stepped manner, and a ring array of receiving holes 204 is opened on the step surface, a spring-pressing component 4 is provided in the receiving hole 204, the spring-pressing component 4 is composed of a telescopic rod and a spring, and the outer end of the spring-pressing component 4 is fitted with the inner end surface of the built-in cylinder 301, a turntable 201 is provided on the upper end surface of the valve body shell 2, and the turntable 201 rotary shaft is connected to the valve ball 202, the connecting piece 1 is mounted on the end surface of the valve body shell 2 by bolts 101, and the middle of the connecting piece 1 A docking tube 102 is installed through the space between the two ends, and the docking tube 102 corresponds to the outer end of the built-in tube 301. Insert the sealing component 3 into the assembly port 203 and insert it into the valve body shell 2, then dock the connecting piece 1 with the opening of the valve body shell 2 and fix it with bolts 101. At this time, the docking tube 102 docks the inner channel of the sealing component 3. When the connecting piece 1 squeezes the outside of the sealing component 3, the sealing component 3 squeezes the spring-pressing component 4. The telescopic rod and spring of the spring-pressing component 4 are compressed, so that the inner sealing ring 304 at the inner end of the sealing component 3 fits with the valve ball 202, and at the same time, the outer sealing ring 302 fits with the rear side of the connecting piece 1. The spring-pressing component 4 is used to buffer the sealing component 3 so that it is in an appropriate fitting position, ensuring that the outer sealing ring 302 and the inner sealing ring 304 are both fitted with the corresponding connections to ensure sealing performance.

[0023] like Figures 2 to 5As shown, the utility model relates to a ball valve rubber seal structure, including a connecting piece 1, a valve body shell 2 and a sealing component 3, a total of two sealing components 3 are provided, and the inner cylinders 301 of the two sealing components 3 are respectively inserted into the corresponding assembly ports 203, and the sealing component 3 is composed of an inner cylinder 301 and a connecting ring 303. The front end opening of the inner cylinder 301 is plugged with an outer sealing ring 302, and the outer sealing ring 302 is fitted with the inner end of the butt tube 102 of the connecting piece 1, and a connecting groove 306 is provided in the annular array at the rear end of the inner cylinder 301, an inner sealing ring 304 is provided at the outer end of the connecting ring 303, and the inner sealing ring 304 is fitted with the side end surface of the valve ball 202, a locking rod 305 is provided in the annular array at the inner end of the connecting ring 303, and the locking rod 305 is inserted in the corresponding connecting groove 306, and the connection After the nut 308 is unlocked, the nut 308 is unlocked and the screw 304 is in the unlock state.

[0024] Working principle: This embodiment provides a ball valve rubber seal structure. During installation, the sealing component 3 is inserted into the assembly port 203 and inserted into the valve body shell 2, and then the connecting piece 1 is docked with the opening of the valve body shell 2 and fixed with the bolt 101. At this time, the docking pipe 102 docks the inner channel of the sealing component 3. When the connecting piece 1 squeezes the outer side of the sealing component 3, the sealing component 3 squeezes the spring-pressing component 4. The telescopic rod and spring of the spring-pressing component 4 are compressed, so that the inner sealing ring 304 at the inner end of the sealing component 3 fits with the valve ball 202. At the same time, the outer sealing ring 302 fits with the rear side of the connecting piece 1. The spring-pressing component 4 buffers the sealing component 3 to place it in an appropriate fitting position. After the nut 308 is in the unlock state, the locking rod 305 is inserted into the unlocking groove 306, and the locking rod 305 is rotated to rotate the locking rod 305 from the initial end to the end of the connecting groove 306. At the same time, the outer end of the locking rod 305 is engaged with the block at the end to lock the connecting ring 303. The outer sealing ring 302 is pressed down and engaged in the recess at the front end of the built-in tube 301. Through a detachable assembly method, the sealing assembly 3 is ejected outward in cooperation with the spring-pressing assembly 4.

[0025] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A ball valve rubber seal structure, comprising a connecting piece (1), a valve body shell (2) and a sealing assembly (3), characterized in that: A ball port (205) is provided in the middle of the valve body shell (2), and a valve ball (202) is provided in the ball port (205). Assembly ports (203) are provided at both ends of the valve body shell (2), and the assembly ports (203) are connected to the ball port (205). A turntable (201) is provided on the upper end surface of the valve body shell (2), and the turntable (201) is connected to the valve ball (202) by a rotating shaft. The connecting piece (1) is installed on the end surface of the valve body shell (2) by means of bolts (101). There are two sealing assemblies (3) in total, and the built-in cylinders (301) of the two sealing assemblies (3) are respectively inserted into the corresponding assembly ports (203).

2. A ball valve rubber seal structure according to claim 1, characterized in that: The assembly opening (203) is designed in a stepped manner, and a ring array of receiving holes (204) is provided on the stepped surface, and a spring-pressing assembly (4) is provided in the receiving holes (204).

3. A ball valve rubber seal structure according to claim 2, characterized in that: The elastic pressure component (4) is composed of a telescopic rod and a spring, and the outer end of the elastic pressure component (4) is in contact with the inner end surface of the built-in cylinder (301).

4. A ball valve rubber seal structure according to claim 3, characterized in that: A butt joint pipe (102) is installed through the middle of the connecting piece (1), and the butt joint pipe (102) corresponds to the outer end of the built-in cylinder (301).

5. The ball valve rubber seal structure according to claim 4, characterized in that: The sealing assembly (3) is composed of an inner cylinder (301) and a connecting ring (303). The front end opening of the inner cylinder (301) is plugged with an outer sealing ring (302), and the outer sealing ring (302) is fitted with the inner end of the butt joint tube (102) of the connecting piece (1). The rear end of the inner cylinder (301) is provided with a connecting groove (306) in an annular array.

6. A ball valve rubber seal structure according to claim 5, characterized in that: The outer end of the connecting ring (303) is provided with an inner sealing ring (304), and the inner sealing ring (304) is in contact with the side end surface of the valve ball (202). The inner end of the connecting ring (303) is provided with a locking rod (305) in an annular array, and the locking rod (305) is inserted into the corresponding connecting groove (306).

7. A ball valve rubber seal structure according to claim 6, characterized in that: The connecting groove (306) is divided into an initial end and a terminal end, a clamping block is provided in the terminal end, and a clamping groove is provided at the outer end of the locking rod (305). After the locking rod (305) rotates to the terminal end, the clamping block docks with the clamping groove.

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