CN210949982U

CN210949982U - Ball valve system

Info

Publication number: CN210949982U
Application number: CN201921474223.6U
Authority: CN
Inventors: 方忠益
Original assignee: Wenzhou Jiatai Valve Technology Co ltd
Current assignee: Wenzhou Jiatai Valve Technology Co ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-07-07
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a ball valve system, which comprises a valve body, wherein a medium channel is arranged in the valve body, a valve ball is arranged at the middle position of the medium channel, a valve rod is connected on the valve ball, the valve rod extends out of the valve body, a drainage channel is arranged in the valve ball, two ends of the drainage channel of the valve ball correspond to valve seats, the valve seats are fixed in the valve body, the outer surface of the valve ball corresponding to the valve seats is provided with an annular inner groove, the outer surface of the valve ball is encircled by the annular inner groove to form a convex cambered surface area, the valve seats are provided with sealing components, each sealing component comprises a first sealing ring which is inconsistent with the upper cambered surface area of the valve ball, a second sealing ring which is embedded in the annular inner groove is arranged, the width of the cross section of the first sealing ring is larger than the second sealing ring, the first sealing ring is provided with a guide inclined plane, an elastic abutting assembly is arranged in the accommodating space. After improvement, the sealing performance of the valve is improved.

Description

Ball valve system

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to a ball valve system.

Background

Ball valves are commonly used in life and include a valve body, a valve seat, a valve ball and a valve rod. A medium channel is arranged in the valve body, and a drainage channel is arranged in the valve ball. The valve ball is controlled through the valve rod, so that the medium channel is communicated with the drainage channel, the valve is in an open state, the outer surface of the valve ball is abutted to the valve seat, the medium channel and the drainage channel are staggered, and the valve is in a closed state. When the valve is closed, a high quality seal between the valve seat and the outer surface of the valve ball is required to prevent leakage of material which could cause safety hazards. In order to improve the sealing performance of the valve, a sealing ring is usually added on the valve seat, so as to improve the fit tightness between the valve seat and the outer surface of the valve ball. However, even if the sealing ring is additionally arranged, the condition of easy leakage still exists between the sealing surfaces of the valve ball and the valve seat, and great influence is caused to the quality of the valve, so that the sealing performance of the valve is solved

The problem is the key to improving the quality of the valve.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a ball valve system that sealing performance is better.

In order to achieve the above purpose, the utility model provides a following technical scheme: a ball valve system comprises a valve body, a medium channel is arranged in the valve body, a valve ball is arranged in the middle of the medium channel, a valve rod is connected on the valve ball, the valve rod extends out of the valve body, a drainage channel is arranged in the valve ball, two ends of the drainage channel of the valve ball correspond to the valve seats, the valve seat is fixed in the valve body, the outer surface of the valve ball corresponding to the valve seat is provided with an annular inner groove, the outer surface of the valve ball is encircled by the annular inner groove to form a convex cambered surface area, the valve seat is provided with a sealing component, the sealing component comprises a first sealing ring which is propped against the upper cambered surface area of the valve ball and a second sealing ring which is embedded in the annular inner groove, the width of the cross section of the first sealing ring is larger than that of the second sealing ring, a guide inclined plane matched with the radian of the cambered surface area of the valve ball is arranged on the first sealing ring, an accommodating space is arranged between the valve body and the valve seat, and an elastic abutting assembly is arranged in the accommodating space.

The utility model discloses further set up to: the elastic abutting assembly comprises an isolating cylinder with elasticity, one end of the isolating cylinder is fixed on the valve seat, the other end of the isolating cylinder is fixed on the valve body, the cross section of the isolating cylinder is gradually decreased from two ends to the middle direction, a spring is arranged in the isolating cylinder, an annular boss is arranged on the valve body, one end of the spring is clamped on the annular boss, a steel ball is arranged on the other end of the spring, and an arc-shaped groove for embedding the steel ball is formed in the valve seat.

The utility model discloses further set up to: the valve rod comprises a rod body and a radial boss, the radial boss is located in the valve body and provided with a sealing element between the radial boss and the inner wall of the valve body, and a clamping groove for the sealing element to be embedded is formed in the inner wall of the valve body.

By adopting the technical scheme, when the valve ball and the valve seat are sealed, a double sealing structure is adopted, so that the sealing performance of the sealing surfaces of the valve ball and the valve seat can be improved; an isolation cylinder is arranged between a valve seat of the valve body, and a spring in the isolation cylinder can generate pressure to the valve seat, so that the valve seat and the valve ball are good in tightness. The radial boss and the sealing element are additionally arranged on the valve rod, so that leakage at the assembly part of the valve rod can be prevented, and the sealing performance of the whole ball valve is improved.

Drawings

FIG. 1 is a sectional view of the present invention;

FIG. 2 is an enlarged view of a portion a of FIG. 1;

FIG. 3 is an enlarged view of FIG. 1 at b;

fig. 4 is an enlarged view of fig. 1 at c.

1. A valve body; 10. an accommodating space; 11. an annular boss; 12. an arc-shaped slot; 13. a card slot; 2. a valve ball; 20. an annular inner groove; 21. an arc surface region; 3. a valve stem; 30. a radial boss; 31. a rod body; 32. a seal member; 4. a valve seat; 5. a seal assembly; 50. a first sealing ring; 51. a second sealing ring; 6. an isolation cylinder; 7. a spring; 70. and (5) steel balls.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 4.

A ball valve system comprises a valve body 1, a medium channel is arranged in the valve body 1, a valve ball 2 is arranged at the middle position of the medium channel, a valve rod 3 is connected onto the valve ball 2, the valve rod 3 extends out of the valve body 1, a drainage channel is arranged in the valve ball 2, two ends of the drainage channel of the valve ball 2 correspond to a valve seat 4, the valve seat 4 is fixed in the valve body 1, an annular inner groove 20 is arranged on the outer surface corresponding to the valve ball 2 and the valve seat 4, the outer surface of the valve ball 2 is encircled by the annular inner groove 20 to form a convex arc surface area 21, a sealing assembly 5 is arranged on the valve seat 4, the sealing assembly 5 comprises a first sealing ring 50 which is inconsistent with the upper arc surface area 21 of the valve ball 2, a second sealing ring 51 is embedded in the annular inner groove 20, the cross section width of the first sealing ring 50 is greater than the second sealing ring 51, and a guide inclined plane which is identical with the, an accommodating space 10 is arranged between the valve body 1 and the valve seat 4, and an elastic abutting component is arranged in the accommodating space 10.

When the valve ball 2 is sealed with the valve seat 4, the outer surface of the valve ball 2 is abutted against the valve seat 4, the first sealing ring 50 on the valve seat 4 is abutted against the arc surface area 21 on the valve ball 2, and the guide inclined plane on the first sealing ring 50 is matched with the radian of the arc surface area 21, so that the sealing surface formed by the first sealing ring 50 and the outer surface of the valve ball 2 is tighter. Simultaneously, the second sealing ring 51 on the valve seat 4 is embedded in the annular inner groove 20 of the valve ball 2, double sealing is achieved, the second sealing ring 51 is located in the annular inner groove 20, sealing structural strength can also be improved, the valve ball 2 is not prone to position deviation, and sealing performance is low. The first sealing ring 50 and the second sealing ring 51 are both made of rubber materials, and have good sealing performance.

The elastic abutting assembly comprises an isolating cylinder 6 with elasticity, one end of the isolating cylinder 6 is fixed on the valve seat 4, the other end of the isolating cylinder is fixed on the valve body 1, the cross section of the isolating cylinder 6 is gradually decreased from two ends to the middle direction, a spring 7 is arranged in the isolating cylinder 6, an annular boss 11 is arranged on the valve body 1, one end of the spring 7 is clamped on the annular boss 11, a steel ball 70 is arranged at the other end of the spring 7, and an arc-shaped groove 12 for embedding the steel ball 70 is formed in the valve seat 4. When the valve seat 4 is sealed with the valve ball 2, the elastic abutting assembly between the valve body 1 and the valve seat 4 can drive the valve seat 4 to tightly abut against the valve ball 2, and the sealing performance of the valve can be further improved. The isolating cylinder 6 has elasticity and is arranged to be a structure with two large ends and a small middle part, so that the isolating cylinder 6 with the structure has better pressure resistance, can keep good elasticity and assists the inner spring 7 to make the valve seat 4. The isolation cylinder 6 also has the function of protecting the spring 7, so that the service life of the isolation cylinder is prevented from being influenced by the interference of media. One end of the spring 7 is fixed with a steel ball 70, the steel ball 70 is positioned in the arc-shaped groove 12 of the valve seat 4, the effectiveness of the spring 7 in propping against the valve seat 4 can be improved, the force can be accurately applied to the valve seat 4, the valve seat 4 is driven to prop against the valve ball 2, and the tightness is kept.

The valve rod 3 includes the body of rod 31 and radial boss 30, radial boss 30 is located valve body 1, and with be equipped with sealing member 32 between the inner wall of valve body 1, be equipped with on the inner wall of valve body 1 and supply sealing member 32 to inlay draw-in groove 13 of establishing. The radial boss 30 and the sealing member 32 can improve the sealing performance between the valve body 1 and the valve rod 3. The sealing element 32 may prevent the medium from leaking out of the valve body 1 along the valve stem 3, further improving the sealing performance of the valve.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a ball valve system, includes the valve body, has the medium channel in the valve body, is equipped with the valve ball at the intermediate position of medium channel, connects the valve rod on the valve ball, the valve rod extends to outside the valve body, have the drainage channel in the valve ball, the both ends of valve ball drainage channel correspond there is the valve seat, the valve seat is fixed in the valve body its characterized in that: be equipped with annular inner groovy on the corresponding surface of valve ball and disk seat, the annular inner groovy circles the bellied cambered surface district with the surface of valve ball, be equipped with seal assembly on the disk seat, seal assembly includes the sealing washer one with cambered surface district looks inconsistent on the valve ball, inlays the sealing washer two of locating in the annular inner groovy, the cross section width of sealing washer one is greater than sealing washer two, have on the sealing washer one with the identical direction inclined plane of valve ball cambered surface district radian, be equipped with between valve body and the disk seat and have accommodation space, it supports the pressure subassembly to be equipped with elasticity in the accommodation space.

2. A ball valve system as defined in claim 1, wherein: the elastic abutting assembly comprises an isolating cylinder with elasticity, one end of the isolating cylinder is fixed on the valve seat, the other end of the isolating cylinder is fixed on the valve body, the cross section of the isolating cylinder is gradually decreased from two ends to the middle direction, a spring is arranged in the isolating cylinder, an annular boss is arranged on the valve body, one end of the spring is clamped on the annular boss, a steel ball is arranged on the other end of the spring, and an arc-shaped groove for embedding the steel ball is formed in the valve seat.

3. A ball valve system as defined in claim 2, wherein: the valve rod comprises a rod body and a radial boss, the radial boss is located in the valve body and provided with a sealing element between the radial boss and the inner wall of the valve body, and a clamping groove for the sealing element to be embedded is formed in the inner wall of the valve body.