CN102734473A - Rotational-free self-sealing valve - Google Patents
Rotational-free self-sealing valve Download PDFInfo
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- CN102734473A CN102734473A CN2011101206718A CN201110120671A CN102734473A CN 102734473 A CN102734473 A CN 102734473A CN 2011101206718 A CN2011101206718 A CN 2011101206718A CN 201110120671 A CN201110120671 A CN 201110120671A CN 102734473 A CN102734473 A CN 102734473A
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Abstract
The invention discloses a rotational-free self-sealing valve, which comprises a valve body provided with an inlet channel and an outlet channel, a valve cover, a valve rod, a valve plug, a handle and stuffing box packing, wherein the lower end of the handle is reversely matched with the valve cover via a thread; the valve cover is matched with the valve body via the thread; a containing cavity is arranged inside the handle; an adjusting bearing is arranged inside the containing cavity; an inner ring of an adjusting bearing is matched with the valve rod and fastened by a nut; the valve plug is positioned inside the inlet channel; and the valve plug is provided with a taper sealing surface which gradually reduces towards the direction of the valve rod, and the taper sealing surface is tightly matched with the annular taper surface inside the inlet channel. With the adoption of the rotational-free self-sealing valve structure disclosed by the invention, non-rotation of the valve rod can be achieved during vertical movement; mechanical wear between the stuffing box packing and a valve tip is reduced, and leakage is not easily generated. In addition, medium flows into the valve cavity from the lower part of the valve rod when being sealed, and is consistent with the movement direction of the valve rod; only friction force between the valve rod and the packing is overcome by operating force; the medium pressure becomes advantages of sealing the valve, and the larger the pressure is, the tighter the sealing is. Therefore, the sealing property of the valve is further improved, the service life is longer, and the rotational-free self-sealing valve is more suitable for pipeline control under middle and high pressure condition.
Description
[technical field]
The present invention relates to a kind of needle-valve, particularly a kind of self-styled without spin valve that is mainly used in the pipeline control under the middle and high press strip spare.
[background technique]
Needle-valve belongs to a kind of of stop valve, is usually used in than small flow the pipeline control of the gas of elevated pressures or liquid medium circulation.The valve point (being the needle plug that valve stem end is the cone face) and the valve rod of existing needle-valve are generally one; Mostly be line contact sealing, and the rotation of the keying of valve through handle directly drive stem movement, the phase mutual friction that must produce sealing surface during this valve seal; And then cause stuffing box packing to be worn; Especially cause scratch, the damage of valve point and valve seat, it is poorly sealed that valve is produced, and causes leaking.The valve opening and closing number of times is many more, abrades manyly more, and life of valve is short more.
On the other hand, when existing needle-valve sealed, medium flows into valve pocket by the valve rod below, and was in the opposite direction with stem movement, so must exert pressure to valve rod, do not leak with forced seal face.At this moment, steering force need overcome the frictional force of valve rod and filler and the thrust that pressure medium produces; The power of the force rate open valve of cut-off valve is big.Therefore, the material of valve rod, size, intensity, hardness etc. are required all higher, can't satisfy the long-term use under the middle and high press strip spare.
[summary of the invention]
The objective of the invention is to: the deficiency that overcomes existing technology; A kind of self-styled without spin valve that can satisfy the long-term use under the middle and high press strip spare is provided; Valve rod can not produce rotation during this valve seal; Can avoid rotating the wearing and tearing of the stuffing box packing that causes, and valve plug sealing direction and MEDIA FLOW be to consistent, reach the big more sealing of the pressure medium tight effect that heals.
The objective of the invention is to realize like this: it comprises valve body, valve gap, valve rod, valve plug, handle and the stuffing box packing that is provided with the inlet/outlet passage; Valve gap and valve body screw-thread fit and with locking device locking, valve rod stretches in the valve body, and valve plug is located at the bottom of valve rod; Valve rod passes stuffing box packing and valve gap inserts in the handle; Its improvements are: the lower end of handle cooperates with the valve gap left-hand thread, is provided with cavity volume in the handle, is built-in with the adjusting bearing at said cavity volume; Regulate bearing inner race and cooperate, the nut that is used for the fastening adjustment bearing inner race is installed on the valve rod with valve rod; Valve plug is the cylinder that top is provided with the circular cone sealing surface, and valve plug is positioned at inlet passage, is provided with the circular cone that is sealed and matched with the circular cone sealing surface in the inlet passage, and said circular cone sealing surface dwindles towards the valve rod direction gradually;
In the above-mentioned self-styled without spin valve, offer the safety relief passage that is connected with inlet passage in the said valve body, the outlet capping of safety relief passage has burst disk, and the clamp holder that clamps burst disk is installed on the valve body;
In the above-mentioned self-styled without spin valve, said clamp holder is for offering the hollow structural component of plurality of opening, clamp holder and wall body screw-thread fit on wall body;
In the above-mentioned self-styled without spin valve, nearly circular cone sealing surface place inwardly offers tilted conical surface on valve rod;
In the above-mentioned self-styled without spin valve, the bottom surface of said cylinder offers groove;
In the above-mentioned self-styled without spin valve, on the valve rod between valve gap and stuffing box packing sheathed metallic shim;
In the above-mentioned self-styled without spin valve, said locking device is by cap.
Beneficial effect of the present invention is: adopt self-styled without spin valve arrangement of the present invention, can realize that valve rod does not rotate when moving up and down, reduce the mechanical wear of stuffing box packing and valve point, be difficult for leaking; In addition, during sealing, medium flows into valve pocket by the valve rod below, and consistent with the stem movement direction, steering force only need overcome the frictional force of valve rod and filler, and pressure medium becomes the advantage of valve seal on the contrary, and pressure is big more, seals tight more.Therefore, the sealability of this valve has obtained further raising, and the life-span is longer, more is applicable to the pipeline control under the middle and high press strip spare; Safety relief passage and burst disk are set, can avoid pressure excessive and the damage valve body, effectively improved Safety performance.
[description of drawings]
Below in conjunction with detailed description of the drawings concrete structure of the present invention
Fig. 1 is the present invention's internal structure schematic representation of self-styled valve without spin
Fig. 2 is the structural representation of stem lower portion
Fig. 3 is the sectional view of the A-A direction of view as shown in Figure 2
Among the figure: 1, jackscrew; 2, nut; 3, regulate bearing; 4, handle; 41, cavity volume; 5, valve gap; 6, valve body; 61, safety relief passage; 62, inlet passage; 63, outlet passage; 7, burst disk; 8, clamp holder; 9, valve rod; 91, valve plug; 92, circular cone sealing surface; 93, cylinder; 94, groove; 95, tilted conical surface; 10, stuffing box packing; 11, metallic shim; 12, by cap.
[embodiment]
Extremely shown in Figure 3 like Fig. 1; Self-styled without spin valve of the present invention is mainly by regulating the terminal valve plug 91 of bearing 3, handle 4, valve gap 5, valve body 6, burst disk 7, clamp holder 8, valve rod 9, valve rod 9 and being formed by cap 12 etc.; Wherein, be provided with in the valve body 6 can ccontaining valve rod 9 valve pocket, inlet passage 62 and outlet passage 63, inlet passage 62 is connected with outlet passage 63 through valve pocket; Through valve rod 9 moving up and down in valve pocket; Can realize the keying of 91 pairs of valves of valve plug, and the other end of valve rod 9 passes stuffing box packing 10 and valve gap 5 inserts in the handles 4, valve gap 5 and valve body 6 screw-thread fit.Offer a cavity volume 41 that the upper end is uncovered in the handle 4; Valve rod 6 upper ends are stretched in the cavity volume 41; Be built-in with the adjusting bearing 3 that is enclosed within on the valve rod 6 at cavity volume 41, regulate bearing 3 inner rings and valve rod 9 and closely cooperate, and in addition fastening with two nuts 2; Cavity volume 41 accent screw threads are screwed into a jackscrew 1, to guarantee the normal use of handle 4.The lower end of handle 4 cooperates with the left-hand thread of valve gap 5 and the screw-thread fit of 6 of valve gap 5 and valve bodies, and when having guaranteed the switching valve, valve rod 9 can move up and down in valve body 6 cavity volumes 41.At this moment, regulate the outer ring of bearing 3 and rotate, but under the pressuring action of nut 2, and regulate valve rod 9 that bearing 3 inner rings fit without spin with handle 4.The sealing that said valve gap 5 and valve rod are 9 is laminated by a metallic shim 11 and two stuffing box packing 10 and forms.Simultaneously,, be provided with one by cap 12 at the two screw-thread fit place for guaranteeing closely cooperating of 6 of valve gap 5 and valve bodies, loosening to avoid filler.Valve rod 9 is integral structures with valve plug 91; Know expression like Fig. 2; In the present embodiment, for guaranteeing the sealability of valve, the valve plug 91 of valve rod 9 bottoms is processed the cylinder 93 that top is provided with circular cone sealing surface 92; Circular cone sealing surface 92 dwindles towards valve rod 9 directions gradually, and circular cone sealing surface 92 Outside diameters are identical with cylinder 93.Valve plug 91 is positioned at inlet passage 62, is provided with the circular cone that is sealed and matched with circular cone sealing surface 92 in the inlet passage 62, during valve closing; Clockwise rotate handle 4, drive valve rod 9 and move up, circular cone sealing surface 92 seals with closed formation of circular cone; Medium flows into valve pocket from inlet passage 62 by valve rod 9 belows; The pressure of medium is consistent with the movement direction that valve rod 9 makes progress, and pressure is big more, and the sealing that valve plug and valve body are 6 is tight more.For guaranteeing the Security of valve, in valve body 6, offer the safety relief passage 61 that is connected with inlet passage 62, the outlet capping of safety relief passage 61 has burst disk 7, and burst disk 7 is compressed by the clamp holder 8 with valve body 6 screw-thread fit.Clamp holder 8 is on wall body, offering the hollow structural component of plurality of opening, and when the pressure in the valve body 6 was excessive, medium can puncture burst disk 7 and outwards release from the tapping of clamp holder 8, has avoided the damage of valve body 6.It should be noted that when valve is in closed state that cylinder 93 parts of valve plug 91 should not covered the inlet of safety relief passage 61, guarantee that safety relief passage 61 is connected with inlet passage 62, to play the effect of releasing really.
In the present embodiment, for guaranteeing the smooth installation of valve rod 9, be provided with " yi word pattern " groove 94 at described cylinder 93 bottom end faces, so that the location of assistant tool.
In the present embodiment; For guaranteeing the smoothness and the flow adjustability of circulation medium in the valve; The about 2mm of the said circular cone sealing surface of distance highly sentences central axis and is arranged with two tilted conical surfaces 95 on said valve rod 9, and the breach that tilted conical surface 95 forms on valve rod 9 increases up gradually.In valve body 6, circular cone extends upward out one section vertical slideway, and is slidingly matched from this section valve rod 9 of the circular cone sealing surface 92 of section start to the valve plug 91 of tilted conical surface 95 and vertical slideway.Through moving up and down of valve rod 9, breach that can regulate is made up of tilted conical surface 95 and the vertical size of formed free air space between the slideway, thus reach the purpose of Flow-rate adjustment.
The valve rod 9 of the self-styled valve without spin that this is novel does not rotate; Can only vertical motion; Avoided to maximum constraints because the scratch that spin friction caused has reduced the wearing and tearing of stuffing box packing and valve plug 91, valve seat, reached difficult leakage and prolong the valve purpose in working life.In addition, valve rod 9 moving direction when also having changed sealing make MEDIA FLOW moving direction to valve rod 9 sealings the time consistent, and the pressure of medium has strengthened the sealing force of valve rod 9, and pressure is big more, seals tight more.Also reduced simultaneously the steering force that applies to valve rod 9, be applicable to more that therefore the pipeline middle and high press strip spare is under controlled.
Described above be merely preferred embodiment of the present invention, the invention is not restricted to above-mentioned mode of execution, any retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, the scope that all belongs to the present invention and protected.
Claims (7)
1. self-styled without spin valve, it comprises valve body, valve gap, valve rod, valve plug, handle and the stuffing box packing that is provided with the inlet/outlet passage, valve gap and valve body screw-thread fit are also locked with locking device; Valve rod stretches in the valve body; Valve plug is located at the bottom of valve rod, and valve rod passes stuffing box packing and valve gap inserts in the handle, and it is characterized in that: the lower end of handle cooperates with the valve gap left-hand thread; Be provided with cavity volume in the handle; Be built-in with the adjusting bearing at said cavity volume, regulate bearing inner race and cooperate, the nut that is used for the fastening adjustment bearing inner race is installed on the valve rod with valve rod; Valve plug is the cylinder that top is provided with the circular cone sealing surface, and valve plug is positioned at inlet passage, is provided with the circular cone that is sealed and matched with the circular cone sealing surface in the inlet passage, and said circular cone sealing surface dwindles towards the valve rod direction gradually.
2. self-styled without spin valve according to claim 1 is characterized in that: offer the safety relief passage that is connected with inlet passage in the valve body, the outlet capping of safety relief passage has burst disk, and the clamp holder that clamps burst disk is installed on the valve body.
3. self-styled without spin valve according to claim 2 is characterized in that: clamp holder is for offering hollow structural component, clamp holder and the wall body screw-thread fit of plurality of opening on wall body.
4. self-styled without spin valve according to claim 1 is characterized in that: nearly circular cone sealing surface place inwardly offers tilted conical surface on valve rod.
5. self-styled without spin valve according to claim 1, it is characterized in that: the bottom surface of said cylinder offers groove.
6. self-styled without spin valve according to claim 1 is characterized in that: on the valve rod between valve gap and stuffing box packing sheathed metallic shim.
7. self-styled without spin valve according to claim 1 is characterized in that: said locking device is by cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110120671.8A CN102734473B (en) | 2011-03-29 | 2011-05-10 | Rotational-free self-sealing valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120094198.6 | 2011-03-29 | ||
| CN201120094198 | 2011-03-29 | ||
| CN201110120671.8A CN102734473B (en) | 2011-03-29 | 2011-05-10 | Rotational-free self-sealing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734473A true CN102734473A (en) | 2012-10-17 |
| CN102734473B CN102734473B (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110120671.8A Expired - Fee Related CN102734473B (en) | 2011-03-29 | 2011-05-10 | Rotational-free self-sealing valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410999A (en) * | 2013-05-22 | 2013-11-27 | 麦特汽车服务股份有限公司 | Method for achieving purpose for regulating rates of flow precisely through flow control valve |
| CN105333177A (en) * | 2015-11-25 | 2016-02-17 | 江苏华太电力仪表有限公司 | Explosion-proof needle valve |
| CN109854559A (en) * | 2018-12-07 | 2019-06-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of parallel spring safety valve of low frequency response |
| CN110513500A (en) * | 2019-09-24 | 2019-11-29 | 沅亨流体科技（昆山）有限公司 | A kind of through type needle-valve |
| CN114623250A (en) * | 2022-03-20 | 2022-06-14 | 东北石油大学 | Conveniently-cleaned anti-blocking throttle valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3761053A (en) * | 1969-10-01 | 1973-09-25 | Sno Trik Co | High pressure valve |
| FR2640020A3 (en) * | 1988-12-05 | 1990-06-08 | Voisin Michel | Anti-leak tap with inverted cones |
| JPH0979387A (en) * | 1995-09-08 | 1997-03-25 | Toyota Autom Loom Works Ltd | Poppet valve |
| CN1299021A (en) * | 1999-12-06 | 2001-06-13 | 郝思宏 | Environment protection type low-torque high-temp. high-pressure cut-off valve |
| CN200999916Y (en) * | 2007-01-24 | 2008-01-02 | 陈秀玉 | CO2 container valve |
| CN201145043Y (en) * | 2008-01-22 | 2008-11-05 | 江苏盐电阀门有限公司 | Stop valve |
| CN201531616U (en) * | 2009-09-23 | 2010-07-21 | 浙江方顿仪表阀门有限公司 | Needle valve with locking device |
-
2011
- 2011-05-10 CN CN201110120671.8A patent/CN102734473B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3761053A (en) * | 1969-10-01 | 1973-09-25 | Sno Trik Co | High pressure valve |
| FR2640020A3 (en) * | 1988-12-05 | 1990-06-08 | Voisin Michel | Anti-leak tap with inverted cones |
| JPH0979387A (en) * | 1995-09-08 | 1997-03-25 | Toyota Autom Loom Works Ltd | Poppet valve |
| CN1299021A (en) * | 1999-12-06 | 2001-06-13 | 郝思宏 | Environment protection type low-torque high-temp. high-pressure cut-off valve |
| CN200999916Y (en) * | 2007-01-24 | 2008-01-02 | 陈秀玉 | CO2 container valve |
| CN201145043Y (en) * | 2008-01-22 | 2008-11-05 | 江苏盐电阀门有限公司 | Stop valve |
| CN201531616U (en) * | 2009-09-23 | 2010-07-21 | 浙江方顿仪表阀门有限公司 | Needle valve with locking device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410999A (en) * | 2013-05-22 | 2013-11-27 | 麦特汽车服务股份有限公司 | Method for achieving purpose for regulating rates of flow precisely through flow control valve |
| CN105333177A (en) * | 2015-11-25 | 2016-02-17 | 江苏华太电力仪表有限公司 | Explosion-proof needle valve |
| CN109854559A (en) * | 2018-12-07 | 2019-06-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of parallel spring safety valve of low frequency response |
| CN110513500A (en) * | 2019-09-24 | 2019-11-29 | 沅亨流体科技（昆山）有限公司 | A kind of through type needle-valve |
| CN114623250A (en) * | 2022-03-20 | 2022-06-14 | 东北石油大学 | Conveniently-cleaned anti-blocking throttle valve |
| CN114623250B (en) * | 2022-03-20 | 2023-04-25 | 东北石油大学 | Anti-blocking throttle valve convenient to clean |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102734473B (en) | 2014-01-15 |
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Granted publication date: 20140115 Termination date: 20160510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |