CN203363266U - Internal thread type ball valve with draining device - Google Patents
Internal thread type ball valve with draining device Download PDFInfo
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- CN203363266U CN203363266U CN 201320449725 CN201320449725U CN203363266U CN 203363266 U CN203363266 U CN 203363266U CN 201320449725 CN201320449725 CN 201320449725 CN 201320449725 U CN201320449725 U CN 201320449725U CN 203363266 U CN203363266 U CN 203363266U
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Abstract
The utility model provides an internal thread type ball valve with a draining device, belongs to the technical field of valve manufacturing, and solves the problems of poor pressure relief stability and the like in existing ball valve with a draining device. The internal thread type ball valve with a draining device comprises a valve body, a valve core and a valve stem, wherein the valve core is positioned in the valve body; the inner end of the valve stem is connected with the valve core; the side part of the valve body is provided with a pressure relief hole; a cylindrical shell is fixed connected at the pressure relief hole; a core and a spring are arranged in the shell; one end of the shell is fixedly connected with a plug; one end of the spring abuts on the plug, and the other end abuts on the core, so that the core always has a tendency to seal the pressure relief hole; and the side part of the shell is provided with a draining hole. The internal thread type ball valve with a draining device has the advantages of stable pressure relief, favorable seal effect and the like.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, relates to a kind of ball valve, particularly the ball valve of internal thread band drainage means.
Background technique
Common valve generally includes entrance point, lumen and outlet end, when the fluid that the hydrodynamic pressure that flows to valve is excessive or be trapped in the valve lumen raises because high-temperature gasification makes the pressure at lumen place, all may cause the perils such as Valve breakage.
For the problem of above existence, people have made improvement miscellaneous, and what have has also applied for patent, and for example the Chinese patent literature data discloses the adjusting ball valve [application number 201020533051.8 with drainage means; Notice of authorization number: CN201795081U], it comprises ball valve, valve body and valve rod, and spheroid is outside equipped with flange plate, is provided with spindle nose on valve rod, between flange plate and spindle nose, is provided with weep hole, and weep hole connects the valve rod main body and is communicated with flange plate is outside.
Adjusting with the drainage means ball valve of this kind of structure, when the ball valve inside water pressure is excessive, by the form of overflow, that water is external by the weep hole expulsion valve.But the mode of this kind of overflow; it is hydraulic pressure hard crush seal circle when excessive; make seal ring produce distortion and extrude behind gap water from the inside flow valves external body of valve body; after extruding repeatedly, overflow; be easy to make the sealing effect of seal ring worse and worse; extrude the required pressure in seal ring gap more and more less; protective action worse and worse; even finally under normal hydraulic pressure state; fluid also can flow out from the gap between valve rod and valve body; seal ring does not have the effect of sealing, and there is the problem of leaking in valve.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, provides that a kind of pressure release is stable, the ball valve with drainage means of good sealing effect.
The purpose of this utility model can realize by following technical proposal: the ball valve of internal thread band drainage means, ball valve comprises valve body, spool and valve rod, described spool is positioned at valve body, the inner of described valve rod is connected with spool, it is characterized in that, the sidepiece of described valve body has relief hole, described relief hole place is fixed with and is tubular shell, be provided with core body and spring in described housing, one end of described housing is fixed with plug, one end of described spring is resisted against on plug, the other end is resisted against on core body, make core body there is all the time the trend of sealing relief hole, the sidepiece of described housing has weep hole.
Housing axially has along it through hole run through, one end of through hole is connected with relief hole, another is fixed with plug, spring has certain elastic force, under the effect of spring force, the relief hole of core body sealed valve body sidepiece, fluid in valve body can not flow out from this relief hole, pressure increase when the valve body inner fluid, while surpassing the elastic force of spring setting, fluid overcomes the elastic force of spring and pushes core body open, and fluid is flow to valve body from relief hole, housing intracavity through hole, weep hole, carry out pressure release, reduce the pressure in valve body.The elasticity stable of spring is malleable not, when the interior hydrodynamic pressure of valve body only has over this value of elastic each time, just can push core body open and carry out pressure release, and pressure release is stable, good sealing effect.
In the ball valve of above-mentioned internal thread band drainage means, there is cylindrical groove on described plug, and the external diameter of the internal diameter of groove and spring is complementary, an end of described spring is positioned at groove and is resisted against on the bottom surface of groove.Cylinder shape groove plays the effect of location to spring, spring also can be offset under the impact of fluid, and spring fitting is firm, the good stability of spring, and the needed fluid pressure value of valve body pressure release is constant.
In the ball valve of above-mentioned internal thread band drainage means, there is the circular orientation post on described core body, the external diameter of described circular orientation post and the internal diameter of spring are complementary, and the other end of described spring is enclosed within the outside of circular orientation post.Locating column plays the effect of location to spring, spring also can be offset under the impact of fluid, and spring fitting is firm, the good stability of spring, and the needed fluid pressure value of valve body pressure release is constant.
In the ball valve of above-mentioned internal thread band drainage means, described core body comprises screw, sealing gasket and sealing plate, and described sealing gasket is connected mutually by screw and sealing plate, and above-mentioned circular orientation post is positioned on sealing plate.Sealing plate is that metallic material is made, and sealing gasket is that rubber material is made, and by screw, is connected, and connects simply, and sealing plate makes the sealing gasket can excessive deformation, the sealing gasket good sealing effect.
In the ball valve of above-mentioned internal thread band drainage means, described plug is external thread structure, and an end of described housing is female thread structure, and described plug is connected in an end of housing by screw thread.By the rotation plug, make the plug precession or screw out housing, the decrement of control spring, thus required minimum pressure during the pressure release of control valve body inner fluid, according to actual conditions, can be changed amount of spring compression at any time, regulates simple, convenient.
In the ball valve of above-mentioned internal thread band drainage means, there is valve seat in described housing, there is annular protrusion on described valve seat.The height of annular protrusion is lower, and sealing gasket is resisted against on annular protrusion, and annular protrusion is embedded in sealing gasket, makes the sealing effect of core body better.
In the ball valve of above-mentioned internal thread band drainage means, described weep hole place is fixed with joint by screw thread.The joint connecting pipe, facilitate other positions of fluid pilot flow direction out by pressure release.
Compared with prior art, the ball valve with drainage means that the utility model provides has the following advantages:
1, this ball valve with drainage means is provided with a drainage means that is similar to one-way valve at the sidepiece of valve body, pressure once the valve body inner fluid surpasses the elastic force that spring is set, core body is just lifted off a seat and is unlocked, the pressure release of realization to valve body, prevent the explosion of valve, pipe fitting etc., the valve long service life.
2, this ball valve with drainage means is by the effect sealing relief hole of spring force, simple in structure, good stability, plug is to be threaded with housing, can adjust at any time the elastic force of spring, required minimum pressure while controlling the fluid pressure release, regulate simple, convenient, even spring is after long-term the use, elasticity weakens, and by rotation plug Compress Spring, can solve.
The accompanying drawing explanation
Fig. 1 is the overall structure sectional view of this drainage means.
Fig. 2 is the overall structure sectional view of this ball valve.
In figure, 1, valve body; 1a, relief hole; 2, spool; 3, valve rod; 4, housing; 4a, weep hole; 4b, valve seat; 4b1, annular protrusion; 5, core body; 5a, screw; 5b, sealing gasket; 5c, sealing plate; 5c1, locating column; 6, spring; 7, plug; 7a, groove; 8, joint.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 2, ball valve comprises valve body 1, spool 2, valve rod 3 and handle, and spool 2 is positioned at valve body 1, and the inner of valve rod 3 is connected with spool 2, and outer end is stretched out outside valve body 1 and is connected with handle.As shown in Figure 1, the sidepiece of valve body 1 has relief hole 1a, and relief hole 1a place is provided with drainage means, and drainage means comprises housing 4, core body 5, spring 6, plug 7 and joint 8.
Housing 4 is tubular, axially there is along it through hole run through, one end of housing 4 is external thread structure, the other end is female thread structure, the relief hole 1a screw thread of one end of external thread structure and valve body 1 is connected, one end of female thread structure and plug 7 screw threads are connected, and the sidepiece of housing 4 has weep hole 4a, and weep hole 4a place screw thread is fixed with joint 8.The interior through-hole diameter near external thread structure one end of housing 4 is less, and self-assembling formation valve seat 4b, have highly lower annular protrusion 4b1 on valve seat 4b.Be provided with core body 5 and spring 6 in housing 4, core body 5 comprises screw 5a, sealing gasket 5b and sealing plate 5c, sealing gasket 5b is made by rubber material, sealing plate 5c is made by metallic material, the side of sealing plate 5c has gasket slot, sealing gasket 5b is arranged in gasket slot, by screw 5a, make sealing gasket 5b be connected mutually with sealing plate 5c, the opposite side of sealing plate 5c has circular orientation post 5c1, the external diameter of circular orientation post 5c1 and the internal diameter of spring 6 are complementary, there is cylindrical groove 7a on plug 7, the external diameter of the internal diameter of groove 7a and spring 6 is complementary, one end of spring 6 is positioned at groove 7a and is resisted against the bottom of groove 7a, the other end is enclosed within the outside of circular orientation post 5c1 and is resisted against on sealing plate 5c, sealing gasket 5b there is all the time be pressed on the upper trend be communicated with between relief hole 1a and housing 4 through holes of cutting off of valve seat 4b, annular protrusion 4b1 is embedded in sealing gasket 5b, make the sealing effect of sealing gasket 5b better.
During use, by rotation plug 7, the decrement of control spring 6, thereby the elastic force of control spring 6, make the force value that the elastic force of spring is setting, i.e. minimum pressure during valve body 1 inner fluid pressure release.When the pressure of valve body 1 inner fluid is less than spring 6 elastic force, the airtight relief hole 1a of core body 5, fluid proper flow in valve body 1, when the hydrodynamic pressure in valve body 1 is greater than spring 6 elastic force, the elastic force that fluid overcomes spring 6 by relief hole 1a is pushed core body 5 open, fluid in valve body 1 is flowed out valve body 1 from relief hole 1a, through hole, weep hole 4a and joint 8, the fluid in valve body 1 is carried out to pressure release, prevent the excessive accidents such as explosion that cause valve of pressure of valve body 1 inner fluid.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more been used the terms such as valve body 1, relief hole 1a, spool 2, valve rod 3, housing 4, weep hole 4a, valve seat 4b, annular protrusion 4b1, core body 5, screw 5a, sealing gasket 5b, sealing plate 5c, locating column 5c1, spring 6, plug 7, groove 7a, joint 8, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (7)
1. the ball valve of an internal thread band drainage means, ball valve comprises valve body (1), spool (2) and valve rod (3), described spool (2) is positioned at valve body (1), the inner of described valve rod (3) is connected with spool (2), it is characterized in that, the sidepiece of described valve body (1) has relief hole (1a), described relief hole (1a) is located to be fixed with and is tubular shell (4), be provided with core body (5) and spring (6) in described housing (4), one end of described housing (4) is fixed with plug (7), one end of described spring (6) is resisted against on plug (7), the other end is resisted against on core body (5), make core body (5) there is all the time the trend of sealing relief hole (1a), the sidepiece of described housing (4) has weep hole (4a).
2. the ball valve of internal thread band drainage means according to claim 1, it is characterized in that, there is cylindrical groove (7a) on described plug (7), and the external diameter of the internal diameter of groove (7a) and spring (6) is complementary, an end of described spring (6) is positioned at groove (7a) and is resisted against on the bottom surface of groove (7a).
3. the ball valve of internal thread band drainage means according to claim 1, it is characterized in that, there is circular orientation post (5c1) on described core body (5), the internal diameter of the external diameter of described circular orientation post (5c1) and spring (6) is complementary, and the other end of described spring (6) is enclosed within the outside of circular orientation post (5c1).
4. the ball valve of internal thread band drainage means according to claim 3, it is characterized in that, described core body (5) comprises screw (5a), sealing gasket (5b) and sealing plate (5c), described sealing gasket (5b) is connected mutually by screw (5a) and sealing plate (5c), and above-mentioned circular orientation post (5c1) is positioned on sealing plate (5c).
5. according to the ball valve of claim 1 or 2 or 3 or 4 described internal thread band drainage meanss, it is characterized in that, described plug (7) is external thread structure, and an end of described housing (4) is female thread structure, and described plug (7) is connected in an end of housing (4) by screw thread.
6. according to the ball valve of claim 1 or 2 or 3 or 4 described internal thread band drainage meanss, it is characterized in that, there is valve seat (4b) in described housing (4), there is annular protrusion (4b1) on described valve seat (4b).
7. according to the ball valve of claim 1 or 2 or 3 or 4 described internal thread band drainage meanss, it is characterized in that, described weep hole (4a) is located to be fixed with joint (8) by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320449725 CN203363266U (en) | 2013-07-25 | 2013-07-25 | Internal thread type ball valve with draining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320449725 CN203363266U (en) | 2013-07-25 | 2013-07-25 | Internal thread type ball valve with draining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203363266U true CN203363266U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320449725 Expired - Lifetime CN203363266U (en) | 2013-07-25 | 2013-07-25 | Internal thread type ball valve with draining device |
Country Status (1)
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| CN (1) | CN203363266U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422930A (en) * | 2015-12-22 | 2016-03-23 | 江苏久晟环保设备有限公司 | Novel check valve |
| CN106545668A (en) * | 2017-01-18 | 2017-03-29 | 宁波华成阀门有限公司 | A kind of ball valve with relief valve |
| CN107575599A (en) * | 2017-10-11 | 2018-01-12 | 苏州科迪流体控制设备有限公司 | A kind of structure for the high sealing liquid flow control ball valve for being easy to connect |
| CN110447946A (en) * | 2018-05-07 | 2019-11-15 | 红塔烟草(集团)有限责任公司 | Seal gas lock water proof and drainage arrangement |
-
2013
- 2013-07-25 CN CN 201320449725 patent/CN203363266U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422930A (en) * | 2015-12-22 | 2016-03-23 | 江苏久晟环保设备有限公司 | Novel check valve |
| CN105422930B (en) * | 2015-12-22 | 2018-09-14 | 江苏久晟环保设备有限公司 | A kind of check valve |
| CN106545668A (en) * | 2017-01-18 | 2017-03-29 | 宁波华成阀门有限公司 | A kind of ball valve with relief valve |
| CN107575599A (en) * | 2017-10-11 | 2018-01-12 | 苏州科迪流体控制设备有限公司 | A kind of structure for the high sealing liquid flow control ball valve for being easy to connect |
| CN110447946A (en) * | 2018-05-07 | 2019-11-15 | 红塔烟草(集团)有限责任公司 | Seal gas lock water proof and drainage arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180410 Address after: Longxi Township fishing village of Yuhuan city in Zhejiang province 317609 Patentee after: ZHEJIANG WANDEKAI FLUID EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 317609 Yuhuan County fishing village, Zhejiang, Taizhou Patentee before: ZHEJIANG WANDEKAI COPPER INDUSTRY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |