CN101761663B - Bellows ball valve - Google Patents
Bellows ball valve Download PDFInfo
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- CN101761663B CN101761663B CN2009102645221A CN200910264522A CN101761663B CN 101761663 B CN101761663 B CN 101761663B CN 2009102645221 A CN2009102645221 A CN 2009102645221A CN 200910264522 A CN200910264522 A CN 200910264522A CN 101761663 B CN101761663 B CN 101761663B
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Abstract
The invention discloses a bellows ball valve which comprises a valve body, a valve cover, a valve seat, a ball body, a valve rod, a three-way handle and a handle steel tube, wherein the ball body is positioned in the middle of the valve body, the valve cover is positioned at two sides of the valve body, the valve seat is arranged between the valve body and the ball body, the lower part of the valve rod passes through the valve body and connected with the ball body, the upper part of the valve rod is connected with the three-way handle, the handle steel tube is connected to the three-way handle, and the lower part of the ball body is also connected with a pivot. The bellows ball valve is characterized in that the valve cover and the valve seat are connected through a valve seat bellows. The bellows ball valve of which the valve rod can be radially rotated with 90 degrees has long service life and good sealability, can satisfy low-leakage requirements, resists high temperature up to 425 DEG C and ultralow temperature of -196 DEG C simultaneously, realizes the valve rod sealing due to the dual functions of padding and the bellows, achieves the zero leakage between the valve and the exterior, and is widely applied in rigorous occasions of high temperature, ultralow temperature, inflammable, explosive and toxic working conditions.
Description
Technical field
The present invention relates to a kind of valve, especially related to a kind of and utilized bellows to realize the valve of the sealing and the driving conversion of ball valve.
Background technique
We know, ball valve is widely used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, between the valve seat and valve gap of existing ball valve, generally seal between Gland and the valve rod with rubber o-ring or graphite packing, rubber o-ring can not high temperature resistant or ultralow temperature, though the high low temperature of graphite ability but be unable to undergo switch, switch number of times more than, the time is once long leakage.We know as elastic sealing elements, have a wide range of applications in the valve manufacturing industry, as bellows gate valve and bellows stop valve etc.Bellows structure changes into the static seal of valve rod at the valve gap place with the motive sealing of valve rod at the stuffing box place, makes the sealing of valve more safe and reliable.Because can only bearing, metal bellows stretches and compression, and can not bear moment of torsion, therefore, present application only limits to also that stem movement is only done axial lifting and gate valve, stop valve and the safety valve etc. that do not take place radially to rotate, but ball valve has advantages such as littler flow resistance coefficient and faster switching speed with respect to gate valve, stop valve.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide the bellows ball valve of a kind of long service life, good seal performance, high temperature resistant, anti-ultralow temperature.
The present invention is achieved through the following technical solutions:
A kind of bellows ball valve, comprise valve body, valve gap, valve seat, spheroid, valve rod, threeway handle and handle steel pipe, wherein, spheroid is positioned in the middle of the valve body, valve gap is positioned at the valve body both sides, between valve gap and spheroid, be provided with valve seat, above-mentioned stem lower portion is passed valve body and is connected with spheroid, top is connected with the threeway handle, be connected with the handle steel pipe on the threeway handle, and the bottom of spheroid also is connected with pivot, is connected by the valve seat bellows between described valve gap and the valve seat, above-mentioned valve rod is divided into upper valve rod and lower valve rod, upper valve rod is connected by ball screw with lower valve rod, it is characterized in that, the top of above-mentioned ball screw is provided with and upper valve rod and corresponding Gland and the following Gland gone up of lower valve rod, fixedly connected with following Gland upper end in last Gland lower end, and fixedly connected with valve body in the Gland lower end down.
Further, be provided with the valve rod bellows between above-mentioned ball screw and the following Gland.
The invention has the beneficial effects as follows: the present invention can radially be revolved the bellows ball valve that turn 90 degrees for valve rod, its long service life, good seal performance, can satisfy the low requirement of leaking, the anti-high temperature that reaches 425 ℃, simultaneously also can anti-subzero 196 ℃ of ultralow temperature, double action by filler and bellows realizes valve stem seal, reaches valve and extraneous zero leakage, is widely used in the harsh occasion of high temperature, ultralow temperature, inflammable, explosive and poisonous operating mode.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Main reference character implication is among the figure:
1, valve gap 2 valve seat bellowss 3, valve seat 4, spheroid
5, pivot 6, valve body 7, seating spring 8, bolt
9, following Gland 10, valve rod bellows 11, ball screw 12, lower valve rod
13, go up Gland 4, upper valve rod 15, top flange
16, threeway handle 17, handle steel pipe
Embodiment
Below in conjunction with accompanying drawing, describe the specific embodiment of the present invention in detail:
Fig. 1 is the structural representation of one embodiment of the invention.
As shown in Figure 1: bellows ball valve, comprise valve body 6, valve gap 1, valve seat 3, spheroid 4, valve rod, threeway handle 16 and handle steel pipe 17, wherein, spheroid 4 is positioned in the middle of the valve body 6, and valve gap 1 is positioned at valve body 6 both sides, fixedlys connected by bolt 8 with valve body 6, between valve gap 1 and spheroid 4, be provided with valve seat 3, valve gap 1 then is connected sealing by valve seat bellows 2 with valve seat 3, also is provided with seating spring 7 between valve gap 1 and valve seat 3, and also is connected with pivot 5 in the bottom of spheroid 4.
Above-mentioned valve rod is divided into upper valve rod 14 and lower valve rod 12, upper valve rod 14 is connected by ball screw 11 with lower valve rod 12, and wherein, the bottom of lower valve rod 12 is passed valve body 6 and is connected with spheroid 4, the top of upper valve rod 14 is connected with threeway handle 16, is connected with handle steel pipe 17 on the threeway handle 16.
In addition, the top of above-mentioned ball screw thick stick 11 is provided with and upper valve rod 14 and lower valve rod 12 corresponding Gland 13 and the following Glands 9 gone up, fixedly connected with following Gland 9 upper ends in last Gland 13 lower ends, and fixedly connected with valve body 6 in Gland 9 lower ends down, and also be provided with valve rod bellows 10 between following Gland 9 and the ball screw 11, realize sealing.
In the time will closing ball valve, pull handle steel pipe 17 clockwise, it drives upper valve rod 14 by threeway handle 16 and clockwise rotates, spiral ball between upper valve rod 14 and the ball screw 11 is converted into rotatablely moving of upper valve rod 14 straight line motion that makes progress of ball screw 11 at this moment, and the spiral ball between ball screw 11 and the lower valve rod 12 is converted into the straight line motion that makes progress of ball screw 11 clockwise rotation of lower valve rod 12, lower valve rod 12 drives spheroid 4 rotations, and then throttle down.
By being closed to when opening, pull handle steel pipe 17 counterclockwise, it drives upper valve rod 14 by threeway handle 16 and rotates counterclockwise, spiral ball between upper valve rod 14 and the ball screw 11 is converted into rotatablely moving of upper valve rod 14 the downward straight line motion of ball screw 11 at this moment, and the spiral ball is converted into the motion that is rotated counterclockwise of lower valve rod 12 to the downward straight line motion of ball screw 11 between ball screw 11 and the lower valve rod 12, and lower valve rod 12 drives spheroids 4 and rotarily opens valve.
In addition, owing to be connected with valve seat bellows 2 between valve seat 3 and the valve gap 1, medium can't pass through the clearance leakage between valve seat 3 and the valve gap 1 when valve closing; No matter when opening or closing, following Gland 9, valve rod bellows 10 and ball screw 11 threes form the cavity of a sealing to valve, and medium can't let out.
The present invention has increased the using scope of ball valve, is highly suitable for bad working environments and poisonous medium operating mode situation.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technological scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (2)
1. bellows ball valve, comprise valve body, valve gap, valve seat, spheroid, valve rod, threeway handle and handle steel pipe, wherein, spheroid is positioned in the middle of the valve body, valve gap is positioned at the valve body both sides, between valve gap and spheroid, be provided with valve seat, above-mentioned stem lower portion is passed valve body and is connected with spheroid, top is connected with the threeway handle, be connected with the handle steel pipe on the threeway handle, and the bottom of spheroid also is connected with pivot, is connected by the valve seat bellows between described valve gap and the valve seat, described valve rod is divided into upper valve rod and lower valve rod, upper valve rod is connected by ball screw with lower valve rod, it is characterized in that, the top of described ball screw is provided with and upper valve rod and corresponding Gland and the following Gland gone up of lower valve rod, fixedly connected with following Gland upper end in last Gland lower end, and fixedly connected with valve body in the Gland lower end down.
2. bellows ball valve according to claim 1 is characterized in that, is provided with the valve rod bellows between described ball screw and the following Gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102645221A CN101761663B (en) | 2009-12-25 | 2009-12-25 | Bellows ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102645221A CN101761663B (en) | 2009-12-25 | 2009-12-25 | Bellows ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101761663A CN101761663A (en) | 2010-06-30 |
| CN101761663B true CN101761663B (en) | 2011-08-10 |
Family
ID=42493000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102645221A Active CN101761663B (en) | 2009-12-25 | 2009-12-25 | Bellows ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101761663B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734486A (en) * | 2012-06-21 | 2012-10-17 | 镇江市铸造阀门厂有限公司 | Valve assembly sealing device of low temperature ball valve |
| CN104565421A (en) * | 2013-10-29 | 2015-04-29 | 上海上冶阀门制造有限公司 | Double-power two-way composite sealing type low-temperature ball valve |
| CN110145633A (en) * | 2019-05-21 | 2019-08-20 | 四川格林流体控制设备有限公司 | A kind of Bellows sealing ball valves |
| CN120274089B (en) * | 2025-06-11 | 2025-10-17 | 浙江理工大学 | A wide temperature range elastic compensation multi-sealed ball valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314202Y (en) * | 1997-12-12 | 1999-04-14 | 杭唯生 | Device for switching shift valve into rotary valve |
| CN1415879A (en) * | 2002-09-19 | 2003-05-07 | 浙江成达特种阀门厂 | Metal seal ball valve for corrugated tube |
| CN2913762Y (en) * | 2006-06-07 | 2007-06-20 | 大连大高阀门有限公司 | Corrugated pipe ball valve |
| CN201159296Y (en) * | 2007-11-30 | 2008-12-03 | 郑州高压阀门厂 | Sylphon seal ball valve |
| CN201588967U (en) * | 2009-12-25 | 2010-09-22 | 昆山维萨阀门有限公司 | Bellows ball valve |
-
2009
- 2009-12-25 CN CN2009102645221A patent/CN101761663B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314202Y (en) * | 1997-12-12 | 1999-04-14 | 杭唯生 | Device for switching shift valve into rotary valve |
| CN1415879A (en) * | 2002-09-19 | 2003-05-07 | 浙江成达特种阀门厂 | Metal seal ball valve for corrugated tube |
| CN2913762Y (en) * | 2006-06-07 | 2007-06-20 | 大连大高阀门有限公司 | Corrugated pipe ball valve |
| CN201159296Y (en) * | 2007-11-30 | 2008-12-03 | 郑州高压阀门厂 | Sylphon seal ball valve |
| CN201588967U (en) * | 2009-12-25 | 2010-09-22 | 昆山维萨阀门有限公司 | Bellows ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101761663A (en) | 2010-06-30 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 215324 No. 18 Jinyu Road, Jinxi Town, Kunshan City, Jiangsu Province Patentee after: Kunshan Weisa Valve Co., Ltd. Address before: 215324 No. 18 Jinyu Road, Jinxi Town, Kunshan City, Jiangsu Province Patentee before: Kunshan Weisa Valve Co., Ltd. |