CN210687075U

CN210687075U - High-sealing wear-resistant ball valve

Info

Publication number: CN210687075U
Application number: CN201921874332.7U
Authority: CN
Inventors: 林叶灵
Original assignee: Zhejiang Julang Fluid Intelligent Control Co ltd
Current assignee: Zhejiang Julang Fluid Intelligent Control Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-06-05
Anticipated expiration: 2029-11-01

Abstract

The utility model provides a high sealed wear-resisting ball valve belongs to valve technical field. It has solved the not good problem of current ball valve leakproofness. This high sealed wear-resisting ball valve includes the valve body, the disk seat, the spheroid, the valve rod, the handle, valve rod lower extreme and spheroid fixed connection, all be provided with the piston ring between disk seat and the valve body, be provided with spring one between piston ring and the disk seat, the installation cavity that supplies a spring installation has all been seted up on the terminal surface of piston ring orientation disk seat, the piston ring is located all to have seted up on the outer disc of installation cavity department and supplies the disk seat to stretch into and with the breach portion that one offseted of installation cavity spring, the axial is seted up on the sealed face to the sunken depressed groove of disk seat position, the disk seat is located the depressed groove and is provided with soft seal assembly in the depressed groove, soft seal assembly comprises spring two and soft seal ring block, soft seal in the soft seal ring. The utility model has the advantage of good sealing performance.

Description

High-sealing wear-resistant ball valve

Technical Field

The utility model belongs to the technical field of the valve, a high seal wear-resisting ball valve is related to.

Background

The ball valve generally comprises valve body, disk seat, valve gap, valve rod, spheroid, and valve rod lower extreme and spheroid fixed connection, but the ball valve is located spheroid department and generally adopts single seal structure, and behind the rotatory spheroid many times, spheroid and disk seat produce tiny clearance because of the friction many times to can influence the leakproofness of ball valve, shorten ball valve life simultaneously.

Disclosure of Invention

The utility model aims at providing a ball valve that leakproofness is good to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: a high-sealing wear-resistant ball valve comprises a valve body, a valve seat, a ball body, a valve rod and a handle, wherein the lower end of the valve rod is fixedly connected with the ball body, a wear-resistant material layer is welded on a sealing surface of the valve seat in a surfacing mode, a wear-resistant material is sprayed on a sealing surface of the ball body, it is characterized in that piston rings are arranged between the valve seat and the valve body, a first spring is arranged between the piston rings and the valve seat, the end surfaces of the piston rings facing the valve seat are respectively provided with an installation cavity for installing a spring, the excircle surfaces of the piston rings at the installation cavity are respectively provided with a gap part for the valve seat to extend into and to be abutted against the spring in the installation cavity, the valve seat is positioned on the sealing surface and is provided with a sunken groove which is sunken axially outwards, the valve seat is positioned in the sunken groove and is internally provided with a soft sealing component, the soft sealing assembly consists of a second spring and a soft sealing ring block, and the soft sealing surface in the soft sealing ring block is arc-shaped and is attached to the sealing surface of the corresponding sphere.

In the high-sealing wear-resisting ball valve, the inner circular surface of the valve seat at the inner side of the piston ring is provided with an extension part which is protruded inwards in the radial direction and limits the position of the valve seat.

In the high-sealing wear-resistant ball valve, a sealing ring for enhancing the sealing property is arranged between the outer circular surface of the valve seat at the concave groove and the inner circular wall of the corresponding valve body, and a groove for installing the sealing ring is formed in the outer circular surface of the valve seat at the sealing ring.

In the high-sealing wear-resisting ball valve, an inner sealing ring is arranged between a soft sealing surface of the soft sealing ring block and a sealing surface of the corresponding ball body, and a notch for mounting the inner sealing ring is formed in the position, located on the inner sealing ring, of the soft sealing ring block.

Compared with the prior art, this high sealed wear-resisting ball valve all is provided with the piston ring between disk seat and valve body, be provided with spring one between piston ring and the disk seat, the piston ring all sets up the installation cavity that supplies spring one to install on the terminal surface of disk seat, the piston ring is located all to set up on the outer disc of installation cavity department and supplies the disk seat to stretch into and with the inconsistent breach portion of installation cavity internal spring one, the disk seat is located and sets up the inside sunken depressed groove of axial on sealed face, the disk seat is located and is provided with soft seal assembly in the depressed groove, soft seal assembly comprises spring two and soft seal ring block, soft seal in the soft seal ring block is personally submitted the arc and is laminated with corresponding spheroidal sealed face mutually, the structure sets up, make the disk seat have double seal structure, be convenient for simultaneously open and close, reduce the wearing and tearing of sealed face.

Drawings

Fig. 1 is a schematic sectional structural view of the high-sealing wear-resistant ball valve.

Fig. 2 is an enlarged view of circle a in the high-sealing abrasion-resistant ball valve.

In the figure, 1, a valve body; 2. a valve seat; 3. a sphere; 4. a piston ring; 5. a first spring; 6. a mounting cavity; 7. a notch portion; 8. a recessed groove; 9. a soft seal assembly; 10. a second spring; 11. a soft seal ring block; 12. a seal ring; 13. a groove; 14. and an inner sealing ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the high-sealing wear-resistant ball valve comprises a valve body 1, a valve seat 2, a ball body 3, a valve rod and a handle, wherein the lower end of the valve rod is fixedly connected with the ball body 3, a wear-resistant material layer is welded on a sealing surface of the valve seat 2 in a surfacing mode, a wear-resistant material is sprayed on a sealing surface of the ball body 3, the wear-resistant material layer and the wear-resistant material are both tungsten carbide, piston rings 4 are arranged between the end surfaces of the valve seat 2 and a channel radial end surface of the valve body 1, the outer circular surfaces of the piston rings 4 are movably matched and sealed with the inner circular wall of the corresponding valve body 1, springs one 5 are arranged between the piston rings 4 and the valve seat 2, mounting cavities 6 for mounting the springs one 5 are arranged on the radial end surfaces of the piston rings 4 facing the valve seat 2, notch portions 7 for the valve seat 2 to extend into and to be abutted against the springs one, the valve seat 2 is located and is provided with soft seal assembly 9 in the depressed groove 8, soft seal assembly 9 comprises two springs 10 and soft seal ring block 11, soft seal in the soft seal ring block 11 personally submits the arc and laminates mutually with the sealed face of corresponding spheroid 3, make valve seat 2 have dual seal structure, thereby the leakproofness has been improved, be provided with inner seal ring 14 between the soft seal face in the soft seal ring block 11 and the sealed face of corresponding spheroid 3, the breach that supplies inner seal ring 14 to install is seted up to soft seal ring block 11 and is located inner seal ring 14 department.

As a preferred structure, the valve seat 2 is provided with an extension on the inner circumferential surface thereof at the inner side of the piston ring 4, which is protruded radially inward and limits the position of the valve seat 2.

In more detail, in order to enhance the sealing performance of the joint surface, a sealing ring 12 for enhancing the sealing performance is disposed between the outer circumferential surface of the valve seat 2 located at the concave groove 8 and the inner circumferential wall of the corresponding valve body 1, and a groove 13 for installing the sealing ring is formed on the outer circumferential surface of the valve seat 2 located at the sealing ring 12.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A high-sealing wear-resistant ball valve comprises a valve body (1), a valve seat (2), a ball body (3), a valve rod and a handle, wherein the lower end of the valve rod is fixedly connected with the ball body (3), a wear-resistant material layer is welded on the sealing surface of the valve seat (2), and a wear-resistant material is sprayed on the sealing surface of the ball body (3), the valve rod is characterized in that a piston ring (4) is arranged between the valve seat (2) and the valve body (1), a first spring (5) is arranged between the piston ring (4) and the valve seat (2), a mounting cavity (6) for mounting the first spring (5) is arranged on the end surface of the piston ring (4) facing the valve seat (2), a notch part (7) for the valve seat (2) to stretch into and to be abutted against the first spring (5) in the mounting cavity (6) is arranged on the outer circular surface of the piston ring (4) positioned at the mounting cavity (6), and a sunken groove, the valve seat (2) is positioned in the concave groove (8) and is internally provided with a soft sealing assembly (9), the soft sealing assembly (9) is composed of a second spring (10) and a soft sealing ring block (11), and the soft sealing surface in the soft sealing ring block (11) is arc-shaped and is attached to the sealing surface of the corresponding sphere (3).

2. A high-sealing wear-resistant ball valve according to claim 1, characterized in that the inner circumferential surface of the valve seat (2) at the inner side of the piston ring (4) is provided with an extension which protrudes radially inwards and limits the position of the valve seat (2).

3. The high-sealing wear-resistant ball valve according to claim 1, wherein a sealing ring (12) for enhancing the sealing performance is arranged between the outer circular surface of the valve seat (2) at the position of the concave groove (8) and the inner circular wall of the corresponding valve body (1), and a groove (13) for installing the sealing ring is formed in the outer circular surface of the valve seat (2) at the position of the sealing ring (12).

4. The high-sealing wear-resistant ball valve according to claim 1, wherein an inner sealing ring (14) is arranged between a soft sealing surface of the soft sealing ring block (11) and a sealing surface of the corresponding ball body (3), and a notch for installing the inner sealing ring (14) is formed at the position, located on the inner sealing ring (14), of the soft sealing ring block (11).