CN202746748U - Packing sealing structure for gate valve - Google Patents
Packing sealing structure for gate valve Download PDFInfo
- Publication number
- CN202746748U CN202746748U CN201220443792.6U CN201220443792U CN202746748U CN 202746748 U CN202746748 U CN 202746748U CN 201220443792 U CN201220443792 U CN 201220443792U CN 202746748 U CN202746748 U CN 202746748U
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- China
- Prior art keywords
- valve
- packing
- support
- coaxial
- handwheel
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- Expired - Lifetime
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Abstract
The utility model relates to a packing sealing structure for a gate valve. The packing sealing structure comprises a valve body, a valve cover, a flash board, a handwheel and a valve rod, wherein the valve cover is fixedly mounted on the valve body in the radial direction; the handwheel is coaxially mounted at the upper end of the valve cover and coaxially fixed with the valve rod; the lower end of the valve rod, in the valve body, is coaxially fixed with the flash board; a valve seat is mounted on the flash board at the part in contact with the valve body; and a combined packing is mounted between the valve cover and the valve rod. The packing sealing structure is characterized in that a support is coaxially mounted between the handwheel and the valve cover, the upper end of the support and a valve rod shaft sleeve below the handwheel are coaxially fixed together, the lower end of the support is coaxially fixed with the valve cover through an adjusting bolt, a packing restrainer and a packing pressing sleeve are sequentially mounted at the lower end of the support coaxially, the lower end of the adjusting bolt, in the support, is propped against the upper end surface of the packing restrainer, and the combined packing is coaxially mounted in the valve cover at the lower end of the packing pressing sleeve and consists of a packing spacer, packing boxes symmetrically and coaxially arranged on two sides, and packing cushions coaxially mounted on the outer sides of the packing boxes. The packing sealing structure has a scientific design, is reliable in sealing performance and can be widely used in various occasions, and the service life of a packing is long.
Description
Technical field
The utility model belongs to the valve class, relates to gate valve, especially a kind of packing seal structure of gate valve.
Background technique
At present, the structure of most gate valves all has valve rod, support and valve gap, and its valve rod passes the through hole of valve gap and support, and support cooperates by seam with valve gap, and is bolted connection together.Multiplex the opening or closing in liquid or gas of these gate valves, the contacting point of its valve rod and valve gap through hole all seals with filler, be provided with filler pressing sleeve, hold-down grid in the end of through hole, and the regulating action of hold-down grid and the filler pressing sleeve adjusting bolt by passing support, filler is compressed, play seal action.Because hold-down grid and filler pressing sleeve will upper and lower displacements in stuffing box valve gap through hole, so between they and the valve gap through hole certain gap is arranged, thereby cause itself and filler to expose in the external environment together.The long-time use, extraneous dust etc. can enter stuffing box, not only affects the adjusting of hold-down grid, also can cause corrosion to hold-down grid, filler pressing sleeve and filler, and then affect the working life of whole packing seal structure.
Summary of the invention
In view of the deficiency that background technique exists, the technical problems to be solved in the utility model provides a kind of design science, simple in structure, can effectively reduce the packing seal structure that each part of stuffing box place contacts with external environment.
The purpose of this utility model is achieved in that
A kind of packing seal structure of gate valve, comprise valve body, valve gap, flashboard, handwheel, valve rod, valve body radially is fixedly mounted with valve gap, be coaxially installed with handwheel in the valve gap upper end, the coaxial valve rod that is fixed with of this handwheel, the lower end of this valve rod is the coaxial flashboard that is fixedly mounted with in valve body, this flashboard is equipped with valve seat in the contact position with valve body, between valve gap and valve rod, combined packing is installed, it is characterized in that: between handwheel and valve gap, be coaxially installed with a support, coaxial being fixedly mounted with of valve stem sleeve of the upper end of this support and handwheel below, the lower end of support is fixedly mounted with by adjusting bolt is coaxial with valve gap, coaxial hold-down grid and the filler pressing sleeve of being equipped with successively in the lower end of support, the lower end top of adjusting bolt in support is contained on the hold-down grid upper-end surface, coaxial installation combined packing in the valve gap of filler pressing sleeve lower end, the stuffing box that this combined packing is arranged by filler spacer and both sides coaxial-symmetrical, coaxial mounted Packing seat consists of in stuffing box outside institute.
And the valve gap radial communication in corresponding filler spacer position is equipped with a grease pouring valve.
And the whole circumference on described support lower end and valve gap mating face all seals, and lower end surface and valve gap end face are close to.
And the mating face of described hold-down grid and filler pressing sleeve is the plane of inclination.
Advantage of the present utility model and good effect are:
1, on the coaxial valve rod that is installed in the valve gap of the filler pressing sleeve of this packing seal structure and hold-down grid, they are upper and lower displacement in valve gap, when packing leaking, can push hold-down grid by adjusting bolt, and then compression filler, thereby guarantee the sealing of valve, effectively reduce the maintenance rate of valve.
2, this packing seal structure has increased a filler pressing sleeve and Packing seat between hold-down grid and stuffing box, and the impacting force of adjusting bolt can be delivered on the filler more uniformly, thereby makes the stressed more even of filler, seal more reliable, longer service life.
3, this packing seal structure has increased a filler spacer and an external grease pouring valve at the stuffing box middle part, greasing by grease pouring valve, play seal action in the time of urgent the leakage can being occurred at the valve rod place on the one hand, on the other hand, can also play lubrication to valve rod, prevent the valve rod scratch, reduced frictional force, reduced the operating torque of valve.
4, the support of this packing seal structure all seals at the whole circumference of an end that it contacts with valve gap, and end face and valve gap end face are close to, thereby the probability that each part of stuffing box place is contacted with external environment reduces greatly, and then increased working life of this each part of place, reduce accordingly the number of times of replacement, increased the working life of valve.
Description of drawings
Fig. 1 is that overall structure of the present utility model is partly cutd open figure;
Fig. 2 is the structure enlarged view of the inwards 90-degree rotation of A section among Fig. 1;
Fig. 3 be Fig. 1 medium-height trestle partly cut open enlarged view;
Fig. 4 is that the B of Fig. 3 is to schematic diagram.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described, need to prove: the present embodiment is descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of packing seal structure of gate valve; comprise valve body 13, valve gap 9, flashboard 11, handwheel 4, valve rod 3; valve body radially is fixedly mounted with valve gap by bolt and nut 10; be coaxially installed with handwheel in the valve gap upper end; the coaxial valve rod that is fixed with of this handwheel; the lower end of this valve rod is the coaxial flashboard that is fixedly mounted with in valve body; this flashboard is equipped with valve seat 12 in the contact position with valve body; on the valve rod above the handwheel, with outer shaft sleeve one safety cover 2 is arranged; be fixed with indicating arm 1 in the safety cover upper end, combined packing 8 is installed between valve gap and valve rod.
Innovative point of the present utility model is:
1, between handwheel and valve gap, be coaxially installed with a support 6, valve stem sleeve 5 coaxial being fixedly mounted with of the upper end of this support and handwheel below, the lower end of support and valve gap are by bolt 7 coaxial being fixedly mounted with.Coaxial hold-down grid 15 and the filler pressing sleeve 16 of being equipped with successively in the lower end of support, the mating face of hold-down grid and filler pressing sleeve is the plane of inclination, the lower end top of rack-mount adjusting bolt 14 in support is contained on the hold-down grid upper-end surface, the axial adjustment by adjusting bolt thus, can make hold-down grid pass to the active force of filler pressing sleeve more even, seal more reliable, longer service life.
2, coaxial installation combined packing in the valve gap of filler pressing sleeve lower end, this combined packing is by the stuffing box 20 of filler spacer 18 and both sides coaxial-symmetrical setting, coaxial mounted Packing seat 17 consists of in the stuffing box outside, valve gap radial communication in corresponding filler spacer position is equipped with a grease pouring valve 19, greasing by grease pouring valve, play seal action in the time of urgent the leakage can being occurred at the valve rod place on the one hand, on the other hand, can also play lubrication to valve rod, prevent the valve rod scratch, reduce frictional force, reduced the operating torque of valve.
3, the whole circumference on support lower end and valve gap mating face all seals, and lower end surface and valve gap end face are close to, thereby the probability that each part of stuffing box place is contacted with external environment reduces greatly, and then increased working life of this each part of place, reduce accordingly the number of times of replacement, increased the working life of valve.
Claims (4)
1. the packing seal structure of a gate valve, comprise valve body, valve gap, flashboard, handwheel, valve rod, valve body radially is fixedly mounted with valve gap, be coaxially installed with handwheel in the valve gap upper end, the coaxial valve rod that is fixed with of this handwheel, the lower end of this valve rod is the coaxial flashboard that is fixedly mounted with in valve body, this flashboard is equipped with valve seat in the contact position with valve body, between valve gap and valve rod, combined packing is installed, it is characterized in that: between handwheel and valve gap, be coaxially installed with a support, coaxial being fixedly mounted with of valve stem sleeve of the upper end of this support and handwheel below, the lower end of support is fixedly mounted with by adjusting bolt is coaxial with valve gap, coaxial hold-down grid and the filler pressing sleeve of being equipped with successively in the lower end of support, the lower end top of adjusting bolt in support is contained on the hold-down grid upper-end surface, coaxial installation combined packing in the valve gap of filler pressing sleeve lower end, the stuffing box that this combined packing is arranged by filler spacer and both sides coaxial-symmetrical, coaxial mounted Packing seat consists of in stuffing box outside institute.
2. the packing seal structure of gate valve according to claim 1, it is characterized in that: the valve gap radial communication in corresponding filler spacer position is equipped with a grease pouring valve.
3. the packing seal structure of gate valve according to claim 1, it is characterized in that: the whole circumference on described support lower end and valve gap mating face all seals, and lower end surface and valve gap end face are close to.
4. the packing seal structure of gate valve according to claim 1, it is characterized in that: the mating face of described hold-down grid and filler pressing sleeve is the plane of inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220443792.6U CN202746748U (en) | 2012-09-03 | 2012-09-03 | Packing sealing structure for gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220443792.6U CN202746748U (en) | 2012-09-03 | 2012-09-03 | Packing sealing structure for gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746748U true CN202746748U (en) | 2013-02-20 |
Family
ID=47706147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220443792.6U Expired - Lifetime CN202746748U (en) | 2012-09-03 | 2012-09-03 | Packing sealing structure for gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746748U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757268A (en) * | 2016-05-19 | 2016-07-13 | 陈亮 | Ash valve |
| CN105889541A (en) * | 2016-06-30 | 2016-08-24 | 纽威石油设备（苏州）有限公司 | Sand control gate valve |
| CN111237495A (en) * | 2020-02-25 | 2020-06-05 | 四川精控阀门制造有限公司 | Flat gate valve filler pre-tightening structure and flat gate valve |
-
2012
- 2012-09-03 CN CN201220443792.6U patent/CN202746748U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757268A (en) * | 2016-05-19 | 2016-07-13 | 陈亮 | Ash valve |
| CN105757268B (en) * | 2016-05-19 | 2019-01-08 | 陈亮 | Ash valve |
| CN105889541A (en) * | 2016-06-30 | 2016-08-24 | 纽威石油设备（苏州）有限公司 | Sand control gate valve |
| CN105889541B (en) * | 2016-06-30 | 2018-11-09 | 纽威石油设备（苏州）有限公司 | A kind of sand control gate valve |
| CN111237495A (en) * | 2020-02-25 | 2020-06-05 | 四川精控阀门制造有限公司 | Flat gate valve filler pre-tightening structure and flat gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |