CN214425160U

CN214425160U - Cavity-free ball valve

Info

Publication number: CN214425160U
Application number: CN202120638671.6U
Authority: CN
Inventors: 宋尚; 丁桂花
Original assignee: Wuxi Swater Fluid Control Technology Co ltd
Current assignee: Wuxi Swater Fluid Control Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-19
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses a chamber-free ball valve, which comprises a valve body and a valve cap which are matched with each other, wherein the valve body is connected with the valve cap through a fastener, a valve rod with a rotating function is arranged on a central vertical line of the valve body, a transverse valve port is arranged on a horizontal axis of the valve rod, valve seats are arranged at the left end and the right end of the valve port, a ball is arranged in the cavity of the valve body, a bottom shaft is arranged below the ball, a bottom shaft sleeve is arranged between the bottom shaft and the ball, the bottom shaft is arranged inside the lower end of the valve body, a bottom cover is arranged outside the valve body, and the bottom cover is connected with the valve body through the fastener; the technology adopts a cavity-free ball valve form, so that the scratch of a valve seat or a ball caused by the fact that granular objects enter a sealing surface is avoided. Due to the unique structural design, the replacement valve seat can serve as a common ball valve for use, parts of the same type are strong in universality and can be completely exchanged, and parts are convenient to maintain and replace.

Description

Cavity-free ball valve

Technical Field

The utility model relates to a ball valve, in particular to no chamber type ball valve.

Background

The ball valve, the spheroid is driven by the valve rod, and the valve of doing the rotary motion around the ball valve axis. The hard seal ball valve can also be used for regulating and controlling fluid, wherein strong shearing force is generated between the ball core of the hard seal ball valve and a metal valve seat of the surfacing hard alloy, and the hard seal ball valve is particularly suitable for media containing fibers, tiny solid particles and the like.

The general ball valve has a large gap between the spherical surface and the valve cap of the valve body, and the gap in the cavity can be filled with opening and closing media only when the valve is provided with the opening and closing media, so that the ball valve is particularly suitable for media containing fibers, tiny solid particles, slurry and the like. The build-up tends to cause the valve to become increasingly jammed and scratched.

SUMMERY OF THE UTILITY MODEL

The utility model provides a there is the clearance between the sphere that no chamber type ball valve is used for overcoming ball valve among the prior art and valve body valve cap, leads to the deposit to make the defect of valve bite and fish tail.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model discloses a no chamber type ball valve, including the valve body and the valve cap of mutually supporting, the valve body passes through the fastener with the valve cap and is connected, be equipped with the valve rod that has rotation function on the central plumb line of valve body, be equipped with horizontal valve port on its horizontal axis, both ends all are equipped with the disk seat about the valve port, and its intracavity is equipped with the ball, the below of ball is equipped with the bottom shaft, be equipped with the bottom shaft cover between bottom shaft and the ball.

Furthermore, the shaft sleeve is in a cap-shaped particle-proof structural design or a through hole structural design.

Further, the ball is connected with the valve rod through an involute curve.

Further, the disk seat is including preventing granule packing, sealing member and winding pad, be equipped with the notch on the disk seat excircle, be equipped with the sealing member in the groove, the sealing member compresses tightly through the clamping ring, the clamping ring respectively with all be equipped with belleville spring between valve body and the valve cap, it is sealed through the winding pad between bottom and the valve body.

Further, the valve rod comprises a packing seat, packing, a packing gland and a packing pressure plate, the packing seat is located at the upper portion close to the valve port, the packing is arranged above the packing seat, the shaft sleeve is located in the packing, the packing gland for compressing the packing is arranged at the upper end of the valve body, the packing pressure plate is fixed above the packing gland, and the packing pressure plate is connected with the valve body through a fastener.

Furthermore, a bottom shaft is arranged inside the lower end of the valve body, a bottom cover is arranged outside the valve body, and the bottom cover is connected with the valve body through a fastening piece.

The utility model discloses the beneficial effect who reaches is: the technology adopts a cavity-free ball valve form, so that the phenomenon that a valve seat or a ball is scratched due to the fact that a granular object enters a sealing surface is avoided.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a valve body; 2. a bonnet; 3. a valve stem; 31. a filler seat; 32. a filler; 33. a packing gland; 34. a packing press plate; 4. a valve seat; 41. particle-proof packing; 42. a seal member; 43. a winding pad; 5. a ball; 6. a shaft sleeve; 7. a spring; 8. a bottom shaft sleeve; 9. a bottom shaft; 10. a bottom cover; 11. and (5) pressing a ring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1, a chamber-free ball valve comprises a valve body 1 and a bonnet 2 which are matched with each other, wherein the valve body 1 is connected with the bonnet 2 through a fastener, and a valve rod 3 with a rotating function is arranged on a central vertical line of the valve body 1;

a horizontal valve port is arranged on a horizontal axis, valve seats 4 are arranged at the left end and the right end of the valve port, a ball 5 is arranged in the cavity of the valve port, a bottom shaft 9 is arranged below the ball 5, and a bottom shaft sleeve 8 is arranged between the bottom shaft 9 and the ball 5.

The shaft sleeve 8 is in a cap-shaped particle-proof structural design or a through hole structural design.

The ball 5 is connected with the valve rod 3 through an involute curve.

Disk seat 4 includes, prevents granule packing 41, sealing member 42, and first winding pad 43 and second winding pad 44 are filled up, be equipped with the notch on the disk seat 4 excircle, be equipped with sealing member 42 in the groove, sealing member 42 compresses tightly through clamping ring 11, clamping ring 11 respectively with valve body 1 and valve cap between all be equipped with belleville spring 7, it is sealed through winding pad 43 between bottom 10 and valve body 1.

The valve rod comprises a packing seat 31, a packing 32, a packing gland 33 and a packing pressure plate 34, the packing seat 31 is positioned at the upper part close to the valve port, the packing 32 is arranged above the packing seat 31, and the shaft sleeve 6 is positioned in the packing 32; the upper end of the valve body 1 is provided with a packing gland 33 used for compressing packing, a packing pressure plate 34 is fixed above the packing gland 33, and the packing pressure plate 34 is connected with the valve body 1 through a fastener.

The lower end of the valve body 1 is internally provided with a bottom shaft 9, the outer part of the valve body is provided with a bottom cover 10, and the bottom cover 10 is connected with the valve body 1 through a fastening piece.

The working principle is as follows: the left end and the right end of the valve port are respectively provided with a valve seat 4, the excircle of the valve seat 4 is carved with a notch, and a sealing element 42 is arranged in the notch to prevent a medium from leaking from the gap between the valve seat 4 and the valve body 1 and the valve cap 2. The sealing piece 42 is pressed tightly through the pressing ring 11, the disc spring 7 is arranged between the pressing ring 11 and the valve body 1 and the valve cap 2, the disc spring 7 can press the sealing piece 42, and has elastic compensation effect on the valve seat 4, so that a sealing surface formed by the valve seat 4 and the spherical surface of the ball 5 is always tightly attached without a gap. By turning the valve stem 3, the ball 5 is driven to rotate, thereby controlling the size of the valve opening. Is characterized in that: the left valve seat 4 and the right valve seat 4 form a full-wrapping type together with the ball 5, no gap exists between the left valve seat and the right valve seat, a cavity-free valve is formed, and no medium enters a sealing surface to cause damage and leakage of the valve.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cavity-free ball valve is characterized by comprising a valve body and a valve cap which are matched with each other, wherein the valve body is connected with the valve cap through a fastener, and a valve rod with a rotating function is arranged on a central vertical line of the valve body;

a horizontal valve port is arranged on a horizontal axis, valve seats are arranged at the left end and the right end of the valve port, a ball is arranged in the cavity of the valve port, a bottom shaft is arranged below the ball, and a bottom shaft sleeve is arranged between the bottom shaft and the ball.

2. The chamberless ball valve of claim 1, wherein the sleeve is of a hat-type particle-proof design or a through-hole design.

3. The chamberless ball valve of claim 1 wherein the ball is involute to the valve stem.

4. The chamberless ball valve of claim 1, wherein the valve seat includes a particle-proof packing, a sealing member and a gasket, a notch is formed on an outer circle of the valve seat, the sealing member is installed in the notch, the sealing member is compressed by a pressing ring, disc springs are respectively arranged between the pressing ring and the valve body and between the pressing ring and the valve cap, and the bottom cover and the valve body are sealed by the gasket.

5. The chamberless ball valve of claim 1 wherein the valve stem includes a packing seat, packing, a packing gland, and a packing retainer, the packing seat is located at an upper portion of the valve port, the packing is located above the packing seat, the sleeve is located within the packing, the upper end of the valve body is provided with the packing gland for compressing the packing, the packing retainer is fixed above the packing gland, and the packing retainer is connected to the valve body by a fastener.

6. The chamberless ball valve of claim 1 wherein the lower end of the valve body has a bottom shaft disposed therein and a bottom cover disposed on an exterior thereof, the bottom cover being connected to the valve body by a fastener.