CN202812441U - Valve body and valve rod sealing structure - Google Patents
Valve body and valve rod sealing structure Download PDFInfo
- Publication number
- CN202812441U CN202812441U CN 201220296072 CN201220296072U CN202812441U CN 202812441 U CN202812441 U CN 202812441U CN 201220296072 CN201220296072 CN 201220296072 CN 201220296072 U CN201220296072 U CN 201220296072U CN 202812441 U CN202812441 U CN 202812441U
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- Prior art keywords
- valve rod
- seal ring
- valve body
- valve
- butting section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 62
- 238000012856 packing Methods 0.000 claims description 16
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 8
- 229920001195 polyisoprene Polymers 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 7
- 210000004907 gland Anatomy 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
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Abstract
The utility model provides a valve body and valve rod sealing structure, belongs to the technical field of valves and solves the problem that a conventional valve body and valve rod sealing structure has high probability of leakage. The valve body and valve rod sealing structure comprises a valve rod and a valve body, wherein the valve rod penetrates the valve body and the outer end of the valve rod extends out of the valve body; a seal ring I is arranged between one end of the valve rod and the inner wall of the valve body; a press cap is arranged between the valve rod and the valve body and the press cap and the valve rod are coaxially arranged; a seal ring II is arranged between the interior of the press cap and the valve rod; a propping part is arranged on the valve rod; an elastic piece of which one end is propped against the lower end of the propping part and the other end is propped against the seal ring II is arranged between the seal ring II and the propping part; the elastic piece enables the seal ring II to be always propped against the interior of the press cap; a cylindrical positioning sleeve is arranged between the seal ring I and the propping part; and the opening of the positioning sleeve is downward and the propping part can be positioned in the positioning sleeve. The valve body and valve rod sealing structure has the advantages of good sealing effect and simplicity in manufacturing.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of sealing configuration, particularly the sealing configuration of a kind of valve body and valve rod.
Background technique
Valve is mounted in the equipment that is used for controlling flow in the pipeline, and it mainly is comprised of valve body, keying member and valve gap three parts.Valve seat is on valve body, and the open-shut device (flap) of valve rod band movable valve moves up and down, and the clutch of flap and valve seat makes valve opening and closing.Opening/closing mechanism is comprised of flap (being again valve disc, spool), valve rod and drive unit (handwheel).Valve rod is screwed on the valve gap with trapezoidal thread, handwheel and flap are fixed on the up and down two ends of valve rod, rotate handwheel, valve rod can rise or land, with drive flap near or lift off a seat to close and open, flap and valve seat match closely, lean on the pressure of valve rod that flap is pressed on the valve seat, at this moment valve is in buttoned-up status, and valve does not tightly leak.
For reaching the needs of use, be provided with sealing configuration between valve rod and the valve body, prevent the overflow in the valve body.Common valve rod and the sealing configuration of valve body, the general employing arranges a seal ring at valve rod, and outer end and the valve body of sealing circle lean, and the deformation by seal ring makes valve body and valve rod reach sealing effect.But because the sealing structure only adopts a seal ring, after long-time use, seal ring weares and teares, and makes easily sealing effect bad and cause leakage.
A kind of spring type valve rod sealing structure [application number: 03209330.6 that Patent document data openly proposes; Notice of authorization number: CN2648219Y], comprise valve body, valve rod, be packing groove between valve body and the valve rod, filler is arranged in the packing groove, and valve rod and valve body are fixed with gland, are provided with spring in the packing groove, both ends of the spring has spring seat cushion to be used for fixing spring, and spring seat cushion is connected filler and is connected with gland.Since filler, spring, gland be enclosed in valve rod around, under the elastic force effect of the pushing of gland and spring, filler is expanded to both sides, formed the tight seal of valve rod, because spring is remaining the elastic force effect, the pushing force that stuffing box packing is afforded remains at certain more rational scope, has guaranteed that namely sealing can make again relatively easy and flexible action of valve rod.In use, because the direction of the elastic force of spring is axial along it all the time, but filler can not get replenishing preferably when long-time the use and after the filler wearing and tearing, shines into leakage easily; And comparatively inconvenience when adding filler after long-time the use.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of sealing configuration that has good sealing effect, makes simple valve body and valve rod.
The purpose of this utility model can realize by following technical proposal: the sealing configuration of a kind of valve body and valve rod, comprise valve rod and valve body, the outer end that described valve rod passes described valve body and described valve rod stretches out in described valve body, be provided with seal ring one between one end of described valve rod and the described valve interior wall, it is characterized in that, also be provided with between described valve rod and the described valve body and be pressure cap cylindraceous and described pressure cap and the coaxial setting of described valve rod, be provided with seal ring two in the described pressure cap and between the described valve rod, described valve rod is provided with the butting section, an end that is provided with elastic component and described elastic component between described seal ring two and the described butting section is resisted against the lower end of described butting section, the other end of described elastic component is resisted against on the described seal ring two, described elastic component makes described seal ring two be resisted against all the time the interior trend of described pressure cap, be provided with tubular setting sleeve between described seal ring one and the described butting section, the opening down and described butting section of described setting sleeve can be positioned at described setting sleeve.
When assembling, be inserted in seal ring one in the valve rod upper end, and setting sleeve is expressed in the valve body with frock, the other end at valve rod is inserted in elastic component, seal ring two and pressure cap again, the upper end of elastic component is resisted against on the butting section, make the lower end abutment of elastic component on seal ring two, make simultaneously seal ring two be positioned at pressure cap, make again valve rod pass valve body and by pressure cap and being connected of valve body valve rod being linked to each other with valve body, have comparatively easily advantage of assembling.Elastic force by elastic component makes seal ring two be resisted against all the time in the pressure cap and deformation occurs and makes valve body and valve rod produce sealing, make valve body and valve rod also produce sealing because deformation occurs seal ring one, therefore, the sealing configuration of this valve body and valve rod makes has dual sealing effect, has preferably sealing effect.
In the sealing configuration of above-mentioned valve body and valve rod, have ringwise pad between the other end of described elastic component and the described seal ring two, described pad passes described valve rod and described pad and described seal ring two and leans.Between the other end of elastic component and seal ring two, pad is set, makes seal ring two can be subject to comparatively uniformly elastic force, have preferably sealing effect.
In the sealing configuration of above-mentioned valve body and valve rod, be provided with ringwise packing ring between described butting section and the described elastic component, described packing ring and the coaxial setting of described valve rod.Elastic component is resisted against on the butting section packing ring, has increased the area of contact with valve rod, limits rocking between it, makes structure more stable.
In the sealing configuration of above-mentioned valve body and valve rod, described valve rod is provided with annular groove, and described butting section is the snap ring that is fastened on described annular groove, and the sidepiece of described snap ring protrudes from the sidewall of described valve rod.When mounted, snap ring is connected in the annular groove, when the upper end of elastic component acts on the snap ring, snap ring has limited the upper end of elastic component and moving axially of valve rod, makes between elastic component and the valve rod to have forced section, adopts snap ring as the butting section, has advantage simple in structure, easy to assembly.
In the sealing configuration of above-mentioned valve body and valve rod, described butting section is the annular convex shoulder that is arranged on the described valve rod, described annular convex shoulder and the coaxial setting of described valve rod and protrude from the sidewall of valve rod.The butting section is annular convex shoulder and valve-stem integrated manufacturing, has the comparatively compact simple advantage of structure.
In the sealing configuration of above-mentioned valve body and valve rod, described elastic component is spring, and an end of described spring acts on the described butting section, and the other end of described spring is resisted against on the described pad.Adopt spring as elastic component, it is good to have an elastic effect, and comparatively easily advantage is installed.
In the sealing configuration of above-mentioned valve body and valve rod, described elastic component is the elastic caoutchouc post that the middle part is axially arranged with through hole, described elastic caoutchouc post passes described valve rod and the one end is resisted against on the described pad, and its other end acts on the described butting section.Adopt the elastic caoutchouc post as elastic component, have simple in structure and can make pad be subject to the advantage of even elastic force
In the sealing configuration of above-mentioned valve body and valve rod, described pressure cap link to each other with described valve body screw thread and described pressure cap and described valve body between be provided with seal ring three.Pressure cap be connected with valve body screw thread and its between be provided with seal ring three, prevent between pressure cap and the valve body producing and reveal.
In the sealing configuration of above-mentioned valve body and valve rod, the quantity of described seal ring two is two, two seal rings two lean and all with the coaxial setting of described valve rod.The quantity of seal ring two is two, makes to reach preferably sealing effect between pressure cap and the valve rod.
Compared with prior art, this valve body has the following advantages with the sealing configuration of valve rod:
1, the sealing configuration of valve body and valve rod makes the valve of the sealing configuration that this valve body and valve rod are installed have preferably sealability by the double sealing structure of seal ring one with seal ring two, prevents interior leakage;
2, the sealing configuration of this valve body and valve rod is more stable, is difficult for shaking and makes preferably advantage of sealing effect;
3, the sealing configuration of this valve body and valve rod also have simple in structure, assembling advantage comparatively easily.
Description of drawings
Fig. 1 is the sealing configuration embodiment's one of this valve body and valve rod cross-sectional schematic.
Fig. 2 is the sealing configuration embodiment's two of this valve body and valve rod cross-sectional schematic.
Among the figure, 1, valve rod; 1a, annular groove; 2, valve body; 2a, body; 2b, valve gap; 3, seal ring one; 4, pressure cap; 5, seal ring two; 6, butting section; 6a, snap ring; 7, elastic component; 7a, spring; 8, seal ring three; 9, setting sleeve; 10, pad; 11, packing ring.
Embodiment
Below be specific embodiment of the utility model and 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.
Embodiment one
As illustrated in fig. 1 and 2, the sealing configuration of a kind of valve body and valve rod comprises valve rod 1 and valve body 2, and valve body 2 comprises body 2a and valve gap 2b, be threaded connection between valve rod 1 and the body 2a and its between seal by seal ring.Valve rod 1 passes valve gap 2b, the outer end of valve rod 1 stretches out in valve gap 2b, be provided with seal ring 1 between one end of valve rod 1 and the valve gap 2b inwall, also be provided with between valve rod 1 and the valve gap 2b and be pressure cap 4 cylindraceous, pressure cap 4 link to each other with valve body 2 screw threads and pressure cap 4 and valve body 2 between be provided with seal ring 38, prevent between pressure cap 4 and the valve gap 2b producing and reveal.
Be provided with in the pressure cap 4 and valve rod 1 coaxial setting, pressure cap 4 and between the valve rod 1 two all with 25, two seal rings 25 of seal ring of valve rod 1 coaxial setting mutually against.Valve rod 1 is provided with on butting section 6 and the valve rod 1 and also is provided with annular groove 1a, and butting section 6 is for being fastened on the snap ring 6a in the annular groove 1a, and the sidepiece of snap ring 6a protrudes from the sidewall of valve rod 1.Be provided with tubular setting sleeve 9 between seal ring 1 and the snap ring 6a, setting sleeve 9 opening down.The lower end of snap ring 6a is provided with spring 7a, be provided with ringwise packing ring 11 and packing ring 11 and valve rod 1 coaxial setting between the end of the lower end of snap ring 6a and spring 7a, be provided with ringwise pad 10 between the other end of spring 7a and the seal ring 25, pad 10 passes valve rod 1 and pad 10 and leans with a seal ring 25 wherein, another seal ring 25 is resisted against on the pressure cap 4, between the other end of spring 7a and seal ring 25, pad 10 is set, make seal ring 25 can be subject to comparatively uniformly elastic force, have preferably sealing effect.
When assembling, first snap ring 6a is snapped onto among the annular groove 1a, adopt snap ring 6a as butting section 6, have advantage simple in structure, easy to assembly.Seal ring 1 is inserted in inner chamber upper end at valve body 2, be encased in setting sleeve 9 in the valve body 2 by frock again and the upper-end surface of setting sleeve 9 is resisted against on the seal ring 1, seal ring 38 is put into valve body 2 inner chambers, again two seal rings 25 are put in the pressure cap 4, in pressure cap 4, put into again pad 10 and pad 10 is resisted against on the seal ring 25 and concordant with seal ring 25.And in annular groove 1a, snap in snap ring 6a, penetrate and make the upper-end surface of snap ring 6a to be resisted against setting sleeve 9 inwalls from the inner chamber bottom of valve body 2 upper end of valve rod 1, and be inserted in successively packing ring 11 and spring 7a in valve rod 1 lower end, make the upper-end surface of packing ring 11 be resisted against the lower end surface of snap ring 6a, and the upper end that makes spring 7a is resisted against packing ring 11 lower end surfaces, the lower end abutment of spring 7a is on the upper-end surface of pad 10, screw-thread fit by pressure cap 4 and valve body 2 makes its both close-fittings, simultaneously seal ring 38 makes pressure cap 4 and valve body 2 form sealing, and pack in the lower end of valve rod 1 copper backing and sealing gasket.By pressure cap 4 and being connected of valve body 2 valve rod 1 being linked to each other with valve gap 2b, again valve gap 2b is installed on the body 2a, have comparatively easily advantage of assembling.Elastic force by spring 7a makes seal ring 25 be resisted against all the time in the pressure cap 4 and deformation occurs and valve gap 2b produced with valve rod 1 seal, make valve gap 2b and valve rod 1 also produce sealing because deformation occurs seal ring 1, therefore, the sealing configuration of this valve body and valve rod makes has dual sealing effect, has preferably sealing effect.This sealing configuration is applicable to ball valve, stop valve, the valves such as angle valve.
As another kind of scheme, butting section 6 is for being arranged on the annular convex shoulder on the valve rod 1, annular convex shoulder and valve rod 1 coaxial setting and protrude from the sidewall of valve rod 1.Butting section 6 is that annular convex shoulder and valve rod 1 are integrally manufactured, has the comparatively compact simple advantage of structure.
As another kind of scheme, elastic component 7 is axially arranged with the elastic caoutchouc post of through hole for the middle part, and the elastic caoutchouc post passes valve rod 1 and the one end is resisted against on the pad 10, and its other end acts on the snap ring 6a.Adopt the elastic caoutchouc post as elastic component 7, have simple in structure and can make pad 10 be subject to the advantage of even elastic force.
Embodiment two
Present embodiment is basic identical with embodiment one structure and principle, and different place is: as shown in Figure 2, valve body adopts integrally manufactured.Pressure cap 4 is positioned at the outer end of valve body 2, and its seal ring 1 is located mutually with pressure cap 4, and two seal rings 25 lean, and wherein a seal ring 25 is resisted against on the pad 10, and another seal ring 25 is resisted against on valve body 1.
Specific embodiment described herein only is 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 replenishes 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 used the terms such as valve rod 1, annular groove 1a, valve body 2, seal ring 1, pressure cap 4, seal ring 25, butting section 6, snap ring 6a, elastic component 7, spring 7a, seal ring 38, setting sleeve 9, pad 10, packing ring 11, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (9)
1. the sealing configuration of a valve body and valve rod, comprise valve rod (1) and valve body (2), the outer end that described valve rod (1) passes described valve body (2) and described valve rod (1) stretches out in described valve body (2), be provided with seal ring one (3) between one end of described valve rod (1) and described valve body (2) inwall, it is characterized in that, also be provided with between described valve rod (1) and the described valve body (2) and be pressure cap cylindraceous (4) and described pressure cap (4) and the coaxial setting of described valve rod (1), be provided with seal ring two (5) in the described pressure cap (4) and between the described valve rod (1), described valve rod (1) is provided with butting section (6), an end that is provided with elastic component (7) and described elastic component (7) between described seal ring two (5) and described butting section (6) is resisted against the lower end of described butting section (6), the other end of described elastic component (7) is resisted against on the described seal ring two (5), described elastic component (7) makes described seal ring two (5) be resisted against all the time the interior trend of described pressure cap (4), be provided with tubular setting sleeve (9) between described seal ring one (3) and described butting section (6), the opening down and described butting section (6) of described setting sleeve (9) can be positioned at described setting sleeve (9).
2. the sealing configuration of valve body according to claim 1 and valve rod, it is characterized in that, have ringwise pad (10) between the other end of described elastic component (7) and the described seal ring two (5), described pad (10) passes described valve rod (1) and described pad (10) leans with described seal ring two (5).
3. the sealing configuration of valve body according to claim 2 and valve rod, it is characterized in that, be provided with ringwise packing ring (11) between described butting section (6) and the described elastic component (7), described packing ring (11) and the coaxial setting of described valve rod (1).
4. according to claim 1 and 2 or the sealing configuration of 3 described valve bodies and valve rod, it is characterized in that, described valve rod (1) is provided with annular groove (1a), described butting section (6) is for being fastened on the snap ring (6a) of described annular groove (1a), and the sidepiece of described snap ring (6a) protrudes from the sidewall of described valve rod (1).
5. according to claim 1 and 2 or the sealing configuration of 3 described valve bodies and valve rod, it is characterized in that, described butting section (6) is for being arranged on annular convex shoulder on the described valve rod (1), described annular convex shoulder and the coaxial setting of described valve rod (1) and protrude from the sidewall of valve rod (1).
6. according to claim 2 or the sealing configuration of 3 described valve bodies and valve rod, it is characterized in that, described elastic component (7) is spring (7a), one end of described spring (7a) acts on the described butting section (6), and the other end of described spring (7a) is resisted against on the described pad (10).
7. according to claim 2 or the sealing configuration of 3 described valve bodies and valve rod, it is characterized in that, described elastic component (7) is axially arranged with the elastic caoutchouc post of through hole for the middle part, described elastic caoutchouc post passes described valve rod (1) and the one end is resisted against on the described pad (10), and its other end acts on the described butting section (6).
8. according to claim 1 and 2 or the sealing configuration of 3 described valve bodies and valve rod, it is characterized in that, described pressure cap (4) link to each other with described valve body (2) screw thread and described pressure cap (4) and described valve body (2) between be provided with seal ring three (8).
9. according to claim 1 and 2 or the sealing configuration of 3 described valve bodies and valve rod, it is characterized in that the quantity of described seal ring two (5) is two, two seal rings two (5) lean and all with the coaxial setting of described valve rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296072 CN202812441U (en) | 2012-06-20 | 2012-06-20 | Valve body and valve rod sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296072 CN202812441U (en) | 2012-06-20 | 2012-06-20 | Valve body and valve rod sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812441U true CN202812441U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220296072 Expired - Fee Related CN202812441U (en) | 2012-06-20 | 2012-06-20 | Valve body and valve rod sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812441U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180065A (en) * | 2014-08-15 | 2014-12-03 | 浙江盾安阀门有限公司 | Reciprocating-type valve core non-return sealing structure |
| CN105874248A (en) * | 2014-01-22 | 2016-08-17 | Nok株式会社 | Valve stem seal |
| CN106402477A (en) * | 2016-11-26 | 2017-02-15 | 江苏新思维信息系统工程有限公司 | Valve packing seal device |
| CN106764013A (en) * | 2015-11-25 | 2017-05-31 | 江苏华东空分设备制造有限公司 | A kind of high vacuum Push-and-pull valve |
| CN109882602A (en) * | 2019-04-10 | 2019-06-14 | 浙江天地环保科技有限公司 | A kind of device improving the poppet sealing of RTO furnace |
| CN111980984A (en) * | 2020-08-21 | 2020-11-24 | 滁州市同乐机械制造有限公司 | Excavator control valve case seal structure |
| WO2022101012A1 (en) * | 2020-11-13 | 2022-05-19 | Asco Sas | Valve system with improved sealing |
-
2012
- 2012-06-20 CN CN 201220296072 patent/CN202812441U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105874248A (en) * | 2014-01-22 | 2016-08-17 | Nok株式会社 | Valve stem seal |
| CN105874248B (en) * | 2014-01-22 | 2017-09-26 | Nok株式会社 | valve stem seal |
| CN104180065A (en) * | 2014-08-15 | 2014-12-03 | 浙江盾安阀门有限公司 | Reciprocating-type valve core non-return sealing structure |
| CN106764013A (en) * | 2015-11-25 | 2017-05-31 | 江苏华东空分设备制造有限公司 | A kind of high vacuum Push-and-pull valve |
| CN106402477A (en) * | 2016-11-26 | 2017-02-15 | 江苏新思维信息系统工程有限公司 | Valve packing seal device |
| CN109882602A (en) * | 2019-04-10 | 2019-06-14 | 浙江天地环保科技有限公司 | A kind of device improving the poppet sealing of RTO furnace |
| CN111980984A (en) * | 2020-08-21 | 2020-11-24 | 滁州市同乐机械制造有限公司 | Excavator control valve case seal structure |
| WO2022101012A1 (en) * | 2020-11-13 | 2022-05-19 | Asco Sas | Valve system with improved sealing |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: VOLDA ENVIRONMENTAL TECHNOLOGY JIANGSU CO., LTD. Free format text: FORMER OWNER: ZHUO DANCHUN Effective date: 20140402 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 317608 TAIZHOU, ZHEJIANG PROVINCE TO: 223900 SUQIAN, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140402 Address after: Suqian City, Jiangsu province Shuang'gou 223900 west of Sihong County Economic Development Zone No. 388 Patentee after: WOERDA ENVIRONMENTAL TECHNOLOGY JIANGSU CO., LTD. Address before: Taizhou City, Zhejiang province 317608 Yuhuan County Lu Pu Industrial Park Zhejiang world HVAC technology Co Ltd Patentee before: Zhuo Danchun |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20170620 |
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| CF01 | Termination of patent right due to non-payment of annual fee |