CN217108295U - Ball valve - Google Patents

Abstract

The utility model belongs to the technical field of the valve, a ball valve is disclosed. This ball valve includes the valve body, be provided with runner and accommodation space on the valve body, be provided with the valve rod in the accommodation space, support ring and elastic component, the valve rod sets up in accommodation space, the first end of valve rod is connected with the spheroid, be provided with the through-hole that corresponds with the runner on the spheroid, the runner can be opened or closed to the spheroid, the outer cladding of spheroid has seal assembly, seal assembly is configured to seal the junction of spheroid and valve body, the support ring sets up in the junction of spheroid with the runner, the support ring is used for supporting seal assembly, the valve rod setting is located to the elastic component cover, elastic component one end and this body coupling of valve, the other end is connected with seal assembly, the elastic component is configured to compress tightly seal assembly, in order to compensate seal assembly's wearing and tearing. The ball valve is easy to install, high in sealing stability, and capable of improving reliability and service life of the ball valve.

Description

Ball valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a ball valve.

Background

The ball valve is widely applied and can realize the function of quickly closing the valve, and the ball valve sealing measures widely used in the market at present are realized by tightly holding a spherical valve rod through a sealing cap and simultaneously pressing a valve body. The ball valve has simple structure and easy sealing. However, the problems are that the ball valve leads to aging and abrasion of the sealing cap under the condition of high-low alternate circulation of the environmental temperature or the medium temperature in the valve, the sealing force of the sealing cap holding the ball valve rod is weakened, and leakage is caused.

Therefore, there is a need for a ball valve that solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball valve can solve among the prior art the sealed reliability of ball valve poor, problem that the life-span is short.

To achieve the purpose, the utility model adopts the following technical proposal:

a ball valve, comprising:

the valve comprises a valve body, wherein a flow channel and an accommodating space are arranged on the valve body;

the valve rod is arranged in the accommodating space, a first end of the valve rod is connected with a ball body, a through hole corresponding to the flow channel is formed in the ball body, the ball body can open or close the flow channel, a sealing assembly is coated outside the ball body, and the sealing assembly is configured to seal the joint of the ball body and the valve body;

the elastic piece is sleeved on the valve rod, one end of the elastic piece is connected with the valve body, the other end of the elastic piece is connected with the sealing assembly, and the elastic piece is configured to compress the sealing assembly.

Optionally, the bottom of the valve body is provided with a limiting groove, one side of the ball body close to the bottom of the valve body is provided with a limiting boss, and the limiting boss is rotatably arranged in the limiting groove.

Optionally, the elastic member is a disc spring.

Optionally, the seal assembly comprises a first valve seat and a second valve seat, the first valve seat being removably connected to the second valve seat.

Optionally, the ball valve further includes a support ring disposed at a connection of the ball body and the flow passage, and the support ring is configured to support the sealing assembly.

Optionally, a groove is formed in a position, corresponding to the flow channel, of the second valve seat, and the support ring is arranged in the groove.

Optionally, the first valve seat and the second valve seat are both made of PTFE or TFM material.

Optionally, the ball valve further comprises a gasket, the gasket is sleeved on the valve rod, one end of the gasket is connected with the elastic piece, and the other end of the gasket is connected with the sealing assembly.

Optionally, the ball valve further includes a gland, and the elastic member is compressed in the accommodating space after the gland is sleeved on the valve rod.

Optionally, a handle is removably attached to the second end of the valve stem.

Has the advantages that:

the utility model discloses an outside the junction of spheroid and runner sets up seal assembly, still set up the elastic component, the elastic component can compress tightly seal assembly on the spheroid in order to realize the elastic compensation wearing and tearing, promptly in the ball valve use, the back of seal assembly wearing and tearing, under the effect of elastic component elasticity, still can make seal assembly and spheroid closely cooperate, guarantees sealed effect, and the setting of this elastic component has both guaranteed spheroidal load demand and has still reduced seal assembly's quantity, and the utility model provides a ball valve is easily installed, and sealing stability is high, has improved the reliability and the life of ball valve.

Drawings

Fig. 1 is a cross-sectional view of a ball valve provided by the present invention;

fig. 2 is an enlarged schematic view of a structure shown in fig. 1.

In the figure:

1. a valve body; 11. a flow channel; 12. an accommodating space; 13. a limiting groove;

2. a valve stem; 21. a sphere; 211. a limiting boss;

3. a seal assembly; 31. a first valve seat; 32. a second valve seat;

4. a support ring;

5. an elastic member;

6. a gland;

7. a gasket;

8. a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment discloses a ball valve, the ball valve includes a valve body 1, a flow channel 11 and an accommodating space 12 are provided in the valve body 1, a valve rod 2 is provided in the accommodating space 12, a support ring 4 and an elastic member 5 are provided, a ball 21 is connected to a first end of the valve rod 2, a through hole corresponding to the flow channel 11 is provided on the ball 21, the ball 21 is driven by the valve rod 2 to rotate, the flow channel 11 can be opened or closed, in order to ensure the sealing performance of the ball valve, a sealing assembly 3 is coated outside the ball 21, the sealing assembly 3 is used for sealing the joint of the ball 21 and the valve body 1, so as to prevent leakage, the setting of the sealing assembly 3 makes the ball valve not need the system pressure sealing in the pipeline where the ball valve is located in the using process, so as to reduce potential leakage points, and the ball valve allows bidirectional circulation, and is convenient for cleaning and cleaning the inside of the ball valve. The elastic piece 5 is arranged on the valve rod 2, the elastic piece 5 is sleeved on the valve rod 2, one end of the elastic piece 5 is connected with the upper top wall of the containing space 12 of the valve body 1, the other end of the elastic piece 5 is connected with the sealing component 3, the requirement of the ball valve ball body 21 for packing (the packing in the embodiment is the sealing component 3) can be reduced, after the ball valve is installed, the elastic piece 5 is in a compressed state, the resilience force generated after the elastic piece 5 is compressed can press the sealing component 3 on the ball body 21, the abrasion of the sealing component 3 is compensated while the load of the ball body 21 is ensured, so that the sealing reliability and the sealing effect of the ball valve are improved, after the sealing component 3 of the ball valve is abraded, the ball valve does not need to be detached from a pipeline for maintenance, the compression state of the elastic piece 5 is directly adjusted, the pressing force of the elastic piece 5 on the sealing component 3 is improved, and the sealing component 3 can be ensured to be continuously and tightly attached to the ball body 21, thereby improving the sealing performance of the ball valve.

It can be understood that, during the use of the ball valve, the relative rotation between the ball body 21 and the sealing assembly 3 will cause the sealing assembly 3 to be worn, and after the portion of the sealing assembly 3 in contact with the ball body 21 is worn, the elastic force of the elastic member 5 can still press the sealing assembly 3 against the ball body 21 to compensate the worn portion of the sealing assembly 3, thereby improving the sealing reliability and prolonging the service life of the ball valve.

Preferably, as shown in fig. 1 and 2, the bottom of the valve body 1 is provided with a limiting groove 13, one side of the ball 21 close to the bottom of the valve body 1 is provided with a limiting boss 211, the limiting boss 211 is rotatably arranged in the limiting groove 13, the limiting groove 13 can ensure that the ball 21 is stressed more uniformly, the balance of the valve rod 2 is ensured, and the sealing stability is increased.

Preferably, the elastic member 5 in this embodiment is a disc spring, which has a large load, a short stroke, a small installation space, and is easier to maintain and replace. In other embodiments, the elastic member 5 may also be a straight spring, or a V-shaped elastic sheet or a W-shaped elastic sheet with elasticity, as long as the sealing assembly can be pressed on the ball body, and the type of the elastic member is not specifically limited herein.

Further, as shown in fig. 1, in the embodiment, the ball 21 and the stem 2 are integrally formed, the sealing assembly 3 includes a first valve seat 31 and a second valve seat 32, the first valve seat 31 is disposed on the stem 2 and then closely attached to the upper surface of the ball 21, the second valve seat 32 is disposed around the outer peripheral wall of the ball 21, and an opening is disposed at a position of the second valve seat 32 corresponding to the flow channel 11 to ensure that the fluid can smoothly pass through the flow channel 11. In particular, the removable connection of the first valve seat 31 to the second valve seat 32 facilitates the installation of the sealing assembly 3.

Preferably, the ball valve of the present embodiment further includes a support ring 4, the support ring 4 is disposed at a connection position of the ball 21 and the flow channel 11, the support ring 4 is used for supporting the sealing assembly 3, so as to reduce the requirement of the ball 21 on the sealing assembly 3, and the support ring 4 can also prevent the sealing assembly 3 from being deformed.

Furthermore, the second valve seat 32 is provided with a groove at a position corresponding to the flow passage 11, the support ring 4 is arranged in the groove, and the arrangement of the support ring 4 reduces the amount of the ball 21 required for the second valve seat 32, and can play a good supporting role for the second valve seat 32, so that the second valve seat 32 is prevented from being deformed to influence the sealing effect, and the sealing reliability is further improved.

Alternatively, the first valve seat 31 and the second valve seat 32 are both made of PTFE (polytetrafluoroethylene) or TFM material, which is resistant to high temperature and corrosion, and has low water absorption, high wear resistance and high aging resistance. TFM is a composite fiber material, made of PTFE with less than 1% of additive, belonging to modified PTFE, with the melting point of 320-340 ℃, and has some remarkable characteristic improvements besides all the advantages of PTFE, such as smaller deformation under high temperature and high pressure, smaller permeability, better heavy pressure recovery under high temperature, and very high surface finish, thus being a good valve seat material.

Preferably, the ball valve further comprises a gasket 7, the gasket 7 is sleeved on the valve rod 2, one end of the gasket 7 is connected with the disc spring, the other end of the gasket is connected with the first valve seat 31, the gasket 7 is arranged to ensure that the first valve seat 31 is stressed more uniformly, and the sealing reliability of the first valve seat 31 is ensured.

Preferably, the ball valve further includes a gland 6, and the gland 6 compresses the disc spring in the accommodating space 12 after being sleeved on the valve rod 2, so as to ensure that the disc spring can provide good elasticity for the first valve seat 31 to compensate for wear.

Alternatively, as shown in fig. 1, a handle 8 is detachably connected to the second end of the valve rod 2, so that the valve rod 2 can be rotated by the handle 8 to drive the ball 21 to open or close the flow passage 11. It should be noted that, the handle 8 is connected with the valve rod 2 in a snap-fit or threaded manner, and the specific connection mode can be selected according to actual needs, and is not limited in this respect.

Optionally, two ends of the flow channel 11 are provided with interfaces for quick connection with a pipeline. Specifically, internal threads can be arranged on the valve bodies 1 at the two ends of the flow channel 11, so that the valve bodies are conveniently connected with a pipeline provided with external threads, and clamping tongues can be arranged on the valve bodies 1 at the two ends of the flow channel 11, so that the valve bodies are conveniently and quickly clamped with the pipeline.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A ball valve, comprising:

the valve comprises a valve body (1), wherein a flow channel (11) and an accommodating space (12) are arranged on the valve body (1);

the valve rod (2) is arranged in the accommodating space (12), a ball body (21) is connected to a first end of the valve rod (2), a through hole corresponding to the flow channel (11) is formed in the ball body (21), the ball body (21) can open or close the flow channel (11), a sealing component (3) is coated outside the ball body (21), and the sealing component (3) is configured to seal the joint of the ball body (21) and the valve body (1);

elastic component (5), the cover is located valve rod (2) sets up, elastic component (5) one end with valve body (1) is connected the other end with seal assembly (3) are connected, elastic component (5) are configured to compress tightly seal assembly (3).

2. The ball valve according to claim 1, characterized in that the bottom of the valve body (1) is provided with a limiting groove (13), one side of the ball body (21) close to the bottom of the valve body (1) is provided with a limiting boss (211), and the limiting boss (211) is rotatably arranged in the limiting groove (13).

3. A ball valve according to claim 1, characterized in that the resilient member (5) is a disc spring.

4. The ball valve according to claim 1, characterized in that the sealing assembly (3) comprises a first seat (31) and a second seat (32), the first seat (31) being removably connected to the second seat (32).

5. The ball valve according to claim 4, characterized in that it further comprises a support ring (4), said support ring (4) being arranged at the junction of said ball (21) and said flow channel (11), said support ring (4) being adapted to support said sealing assembly (3).

6. The ball valve according to claim 5, characterized in that the second valve seat (32) is provided with a groove in a position corresponding to the flow channel (11), the support ring (4) being arranged in the groove.

7. The ball valve according to claim 4, characterized in that the first seat (31) and the second seat (32) are made of PTFE or TFM material.

8. The ball valve according to claim 4, characterized in that it further comprises a gasket (7), said gasket (7) being fitted on said stem (2), said gasket (7) being connected at one end to said elastic member (5) and at the other end to said sealing assembly (3).

9. The ball valve according to claim 1, further comprising a gland (6), wherein the elastic member (5) is compressed in the accommodating space (12) after the gland (6) is sleeved on the valve rod (2).

10. A ball valve according to any one of claims 1 to 8, wherein a handle (8) is removably attached to the second end of the valve stem (2).

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