CN206072508U - A kind of anti-ejection stem structure for valve - Google Patents
A kind of anti-ejection stem structure for valve Download PDFInfo
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- CN206072508U CN206072508U CN201620960714.1U CN201620960714U CN206072508U CN 206072508 U CN206072508 U CN 206072508U CN 201620960714 U CN201620960714 U CN 201620960714U CN 206072508 U CN206072508 U CN 206072508U
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- spacing
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- spacing ring
- retaining ring
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Abstract
This utility model is related to a kind of anti-ejection stem structure for valve, including stuffing-box and valve rod, the valve rod is arranged on the hollow bulb of described filler letter, arranges groove on the inwall of described filler letter hollow bulb, spacing ring is set in the groove, spacing retaining ring is set outside the spacing ring.This utility model increases a groove in stuffing-box, is put into spacing ring, while spacing retaining ring is placed outside spacing ring.By tighten screw make gland compress respectively filler, spacing retaining ring, packing ring, valve rod realize valve axle portion seal.When compressing filler, spacing ring can't be compacted, it is ensured that spacing ring freely activity between stuffing-box and spacing retaining ring, such spacing ring will not be crushed out of shape.Spacing ring need to be made multi-segment structure and is placed and taken out with facilitating.Screw unclamps（Even fracture）, valve rod also will not be sprayed by pressure, can effectively take precautions against the generation of security incident.
Description
Technical field
This utility model belongs to valve part field, is related to a kind of anti-ejection stem structure for valve.
Background technology
Present Ge great valve plants both at home and abroad, for the sealing of valve axle portion is all by stuffing-box（1）, valve rod（2）, filler（3）、
Gland（4）, screw（5）, packing ring（6）Composition.By tightening screw（5）Make gland（4）To compress filler respectively（3）, packing ring
（6）, valve rod（2）Realize that valve axle portion is sealed, see Fig. 1.Larger safety defect is designed with using this：If not discharging inside
Pressure, misoperation or on-line maintenance when, screw（5）Fracture is unclamped, valve rod（2）Can be sprayed by pressure, so as to there is peace
Full accident even personal injury, is shown in Fig. 2.Patent CN201120060146.7 discloses a kind of Anti-spatter communication valve rod, and which includes
Valve rod, closure, valve gap and rotary limit device, the bottom for having mounting groove, valve rod in closure are fixedly mounted on mounting groove
It is interior, there is the feed pathway being connected with stem cavity in the bottom of closure, intracavity has and stem cavity shape in the stem lower portion
The corresponding valve gap of shape, is installed with rotary limit device on the valve rod corresponding with valve gap, pacifies on rotary limit device
Equipped with the valve gap that can rotate upwardly and downwardly and can seal up stem cavity.But the complex structure, application be not extensive.
Utility model content
In order to overcome the deficiencies in the prior art, this utility model to provide a kind of anti-ejection stem structure for valve, energy
The generation of security incident is taken precautions against effectively.
This utility model provides following technical scheme：
A kind of anti-ejection stem structure for valve, including stuffing-box and valve rod, the valve rod are arranged on described filler
The hollow bulb of letter, arranges on the inwall of described filler letter hollow bulb, outside the spacing ring
Spacing retaining ring is set.
In such scheme preferably, the spacing loop section is arranged in the groove.
In any of the above-described scheme preferably, the spacing retaining ring is by the spacing latch closure to described filler letter.
In any of the above-described scheme preferably, the section of the spacing retaining ring is inverted "L" shaped, the spacing retaining ring
The space for placing the spacing ring is formed with the groove.
In any of the above-described scheme preferably, the spacing ring is formed positioned at the spacing retaining ring and the groove
When in space, the spacing ring is identical with the bottom level position of the spacing retaining ring.
In any of the above-described scheme preferably, the spacing ring is multi-segment structure.
In any of the above-described scheme preferably, the spacing ring is made up of multi-section circular arc, and the multi-section circular arc combination exists
Annular is constituted together.
In any of the above-described scheme preferably, the spacing ring arranges packing ring with the lower section of the spacing retaining ring.
In any of the above-described scheme preferably, filler is set between described filler letter and the valve rod, in described filler
Upper setting gland.
In any of the above-described scheme preferably, the gland is fixed together with described filler letter by fixture.
In any of the above-described scheme preferably, the fixture is screw.
In any of the above-described scheme preferably, the gland includes horizontal component and vertical portion, the horizontal component
Above described filler letter, the vertical portion is located between described filler letter and the valve rod.
This utility model increases a groove in stuffing-box, is put into spacing ring, while spacing retaining ring is placed outside spacing ring.
By tighten screw make gland compress respectively filler, spacing retaining ring, packing ring, valve rod realize valve axle portion seal.Compression is filled out
During material, spacing ring can't be compacted, it is ensured that spacing ring freely activity, such spacing ring between stuffing-box and spacing retaining ring
Will not be crushed out of shape.Spacing ring need to be made multi-segment structure and is placed and taken out with facilitating.Screw unclamps（Even fracture）, valve rod
Will not be sprayed by pressure, can effectively take precautions against the generation of security incident.
Description of the drawings
Fig. 1 is the sealed structure chart of existing valve axle portion；
Fig. 2 is that the existing valve rod shown in Fig. 1 sprays schematic diagram；
Fig. 3 is a kind of structural representation of a preferred embodiment of the anti-ejection stem structure for valve of this utility model
Figure；
Fig. 4 is the schematic diagram that the valve rod of preferred embodiment shown in Fig. 3 will not be ejected；
Fig. 5 is the structural representation of spacing ring in Fig. 3.
Specific embodiment
In order to further appreciate that technical characteristic of the present utility model, this utility model is carried out with reference to specific embodiment
It is set forth in.Embodiment only has exemplary effect to this utility model, not with any restricted effect, ability
The modification of any unsubstantiality that the technical staff in domain is made on the basis of this utility model, should all belong to of the present utility model
Protection domain.
In description of the present utility model, it is to be understood that in term " on ", D score, " top ", " bottom ", " interior ",
Etc. " outward ", the orientation or position relationship of instruction be based on orientation shown in the drawings or position relationship, be for only for ease of description this
Invention and simplified description, rather than indicate or imply that the device or element of indication must have specific orientation, with specifically side
Position construction is operated, therefore it is not intended that to restriction of the present utility model.
Embodiment 1：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on the inwall of 1 hollow bulb of described filler letter
Position ring 7, the spacing ring 7 is outer to arrange spacing retaining ring 8.
In the present embodiment, 7 part of the spacing ring is arranged in the groove.
In the present embodiment, the spacing retaining ring 8 detains the spacing ring 7 to described filler letter 1.
In the present embodiment, the section of the spacing retaining ring 8 is inverted "L" shaped, the spacing retaining ring 8 and the groove
Form the space for placing the spacing ring 7.
In the present embodiment, when the spacing ring 7 is located in the space that the spacing retaining ring 8 is formed with the groove,
The spacing ring 7 is identical with the bottom level position of the spacing retaining ring 8.
In the present embodiment, the spacing ring 7 is multi-segment structure.It is 4 sections shown in Fig. 5, specifically can be according to service condition
To be designed as several segment structures.
In the present embodiment, the spacing ring 7 is made up of multi-section circular arc, and the multi-section circular arc combines composition annulus
Shape.
In the present embodiment, the spacing ring 7 arranges packing ring 6 with the lower section of the spacing retaining ring 8.
In the present embodiment, filler 3 is set between described filler letter 1 and the valve rod 2, pressure is set in described filler 3
Lid 4.
In the present embodiment, the gland is fixed together with described filler letter 1 by fixture.
In the present embodiment, the fixture is screw 5.
In the present embodiment, the gland 4 includes horizontal component and vertical portion, and the horizontal component is located at described filler
Above letter 1, the vertical portion is located between described filler letter 1 and the valve rod 2.
The present embodiment increases a groove in stuffing-box 1, is put into spacing ring 7, while spacing ring 7 is outer to place spacing retaining ring
8.Realize that valve axle portion close compressing filler 3, spacing retaining ring 8, packing ring 6, valve rod 2 respectively by tightening screw 5 and making gland 4
Envelope.When compressing filler, spacing ring 7 can't be compacted, it is ensured that spacing ring 7 is freely lived between stuffing-box 1 and spacing retaining ring 8
Dynamic, such spacing ring 7 will not be crushed out of shape.Spacing ring 7 need to be made multi-segment structure and is placed and taken out with facilitating.See Fig. 3.Screw 5
Unclamp（Even fracture）, valve rod 2 also will not be sprayed by pressure, can effectively take precautions against the generation of security incident.See Fig. 4.
Embodiment 2：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on described filler letter 1
Position ring 7 is outer to arrange spacing retaining ring 8.
Embodiment 3：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on the inwall of 1 hollow bulb of described filler letter
Position ring 7, the spacing ring 7 is outer to arrange spacing retaining ring 8.
7 part of the spacing ring is arranged in the groove.
Embodiment 4：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on the inwall of 1 hollow bulb of described filler letter
Position ring 7, the spacing ring 7 is outer to arrange spacing retaining ring 8.
7 part of the spacing ring is arranged in the groove.
The spacing retaining ring 8 detains the spacing ring 7 to described filler letter 1.
Embodiment 5：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on the inwall of 1 hollow bulb of described filler letter
Position ring 7, the spacing ring 7 is outer to arrange spacing retaining ring 8.
7 part of the spacing ring is arranged in the groove.
The spacing retaining ring 8 detains the spacing ring 7 to described filler letter 1.
The section of the spacing retaining ring 8 is inverted "L" shaped, and the spacing retaining ring 8 is formed with the groove places described
The space of spacing ring 7.
When the spacing ring 7 is located in the space that formed with the groove of the spacing retaining ring 8, the spacing ring 7 and
The bottom level position of the spacing retaining ring 8 is identical.
Embodiment 6：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on the inwall of 1 hollow bulb of described filler letter
Position ring 7, the spacing ring 7 is outer to arrange spacing retaining ring 8.7 part of the spacing ring is arranged in the groove.
The spacing retaining ring 8 detains the spacing ring 7 to described filler letter 1.The section of the spacing retaining ring 8 is for
" L " shape, the spacing retaining ring 8 form the space for placing the spacing ring 7 with the groove.The spacing ring 7 is located at described
When in the space that spacing retaining ring 8 is formed with the groove, the bottom water prosposition of the spacing ring 7 and the spacing retaining ring 8
Put identical.
The spacing ring 7 is multi-segment structure.It is 4 sections shown in Fig. 5, several sections of knots specifically can be designed as according to service condition
Structure.The spacing ring 7 is made up of multi-section circular arc, and the multi-section circular arc combines composition annular.
Embodiment 7：
As in Figure 3-5, a kind of anti-ejection stem structure for valve, including stuffing-box 1 and valve rod 2, the valve rod 2
The hollow bulb of described filler letter 1 is arranged on, is arranged on the inwall of 1 hollow bulb of described filler letter
Position ring 7, the spacing ring 7 is outer to arrange spacing retaining ring 8.7 part of the spacing ring is arranged in the groove.
The spacing retaining ring 8 detains the spacing ring 7 to described filler letter 1.The section of the spacing retaining ring 8 is for
" L " shape, the spacing retaining ring 8 form the space for placing the spacing ring 7 with the groove.The spacing ring 7 is located at described
When in the space that spacing retaining ring 8 is formed with the groove, the bottom water prosposition of the spacing ring 7 and the spacing retaining ring 8
Put identical.
The spacing ring 7 is multi-segment structure.It is 4 sections shown in Fig. 5, several sections of knots specifically can be designed as according to service condition
Structure.The spacing ring 7 is made up of multi-section circular arc, and the multi-section circular arc combines composition annular.
The spacing ring 7 arranges packing ring 6 with the lower section of the spacing retaining ring 8.Described filler letter 1 and the valve rod 2 it
Between arrange filler 3, in described filler 3 arrange gland 4.
The gland is fixed together with described filler letter 1 by fixture.The fixture is screw 5.The gland 4
Including horizontal component and vertical portion, the horizontal component is located above described filler letter 1, and the vertical portion is located at described filling out
Between material letter 1 and the valve rod 2.
Claims (10)
1. a kind of anti-ejection stem structure for valve, including stuffing-box（1）And valve rod（2）, the valve rod（2）It is arranged on institute
State stuffing-box（1）Hollow bulb, it is characterised in that：Described filler letter（1）Groove is set on the inwall of hollow bulb, in the groove
Spacing ring is set（7）, the spacing ring（7）It is outer that spacing retaining ring is set（8）.
2. the anti-ejection stem structure for valve according to claim 1, it is characterised in that：The spacing ring（7）Portion
Divide and be arranged in the groove.
3. the anti-ejection stem structure for valve according to claim 2, it is characterised in that：The spacing retaining ring
（8）By the spacing ring（7）Detain to described filler letter（1）.
4. the anti-ejection stem structure for valve according to claim 3, it is characterised in that：The spacing retaining ring
（8）Section be inverted "L" shaped, the spacing retaining ring（8）Formed with the groove and place the spacing ring（7）Space.
5. the anti-ejection stem structure for valve according to claim 4, it is characterised in that：The spacing ring（7）Position
In the spacing retaining ring（8）When in the space formed with the groove, the spacing ring（7）With the spacing retaining ring（8）
Bottom level position it is identical.
6. the anti-ejection stem structure for valve according to any one of claim 1 to 5, it is characterised in that：It is described
Spacing ring（7）For multi-segment structure.
7. the anti-ejection stem structure for valve according to claim 6, it is characterised in that：The spacing ring（7）By
Multi-section circular arc is constituted, and the multi-section circular arc combines composition annular.
8. the anti-ejection stem structure for valve according to any one of claim 1 to 5, it is characterised in that：It is described
Spacing ring（7）With the spacing retaining ring（8）Lower section arrange packing ring（6）.
9. the anti-ejection stem structure for valve according to any one of claim 1 to 5, it is characterised in that：It is described
Stuffing-box（1）With the valve rod（2）Between filler is set（3）, in described filler（3）Upper setting gland（4）.
10. the anti-ejection stem structure for valve according to claim 9, it is characterised in that：The gland is by solid
Determine part and described filler letter（1）It is fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620960714.1U CN206072508U (en) | 2016-08-27 | 2016-08-27 | A kind of anti-ejection stem structure for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620960714.1U CN206072508U (en) | 2016-08-27 | 2016-08-27 | A kind of anti-ejection stem structure for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206072508U true CN206072508U (en) | 2017-04-05 |
Family
ID=58434128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620960714.1U Active CN206072508U (en) | 2016-08-27 | 2016-08-27 | A kind of anti-ejection stem structure for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206072508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669451A (en) * | 2021-08-31 | 2021-11-19 | 湖北三江航天红林探控有限公司 | Sealing structure and application thereof in high-temperature and high-pressure system |
-
2016
- 2016-08-27 CN CN201620960714.1U patent/CN206072508U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669451A (en) * | 2021-08-31 | 2021-11-19 | 湖北三江航天红林探控有限公司 | Sealing structure and application thereof in high-temperature and high-pressure system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610225 No. four, No. 1128, Airport Road, Southwest Economic Development Zone, Chengdu, Sichuan Patentee after: Emerson automation (Sichuan) Co., Ltd. fluid control Address before: 610225 No. four, No. 1128, Airport Road, Southwest Economic Development Zone, Chengdu, Sichuan Patentee before: Valve industry (Sichuan) Co., Ltd. |