CN205026201U - Valve shaft overlaps dustproof construction - Google Patents
Valve shaft overlaps dustproof construction Download PDFInfo
- Publication number
- CN205026201U CN205026201U CN201520776034.XU CN201520776034U CN205026201U CN 205026201 U CN205026201 U CN 205026201U CN 201520776034 U CN201520776034 U CN 201520776034U CN 205026201 U CN205026201 U CN 205026201U
- Authority
- CN
- China
- Prior art keywords
- valve
- dust
- stuffing box
- valve rod
- axle sleeve
- 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
Links
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 8
- 238000000748 compression moulding Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a valve shaft overlaps dustproof construction, including valve body, packing box, axle sleeve, valve rod, dust keeper, disk seat and case, the packing box is independently installed in the shaft hole excessively of valve body, the upper end circular bead of packing box passes through seal gasket and valve body seamless connection, be equipped with the axle sleeve in the packing box, the valve rod embeds in the axle sleeve, be equipped with a shaft shoulder on the valve rod, be equipped with footstep bearing between the shaft shoulder and the packing box, the cavity intussuseption that the upper portion and the valve rod of packing box formed is filled with the filler, be provided with dust keeper in the lower part of packing box and the cavity that the valve rod formed, dust keeper comprises a plurality of dust sealing circles, compensation dish spring, first gasket and second gasket, dust keeper's a below installation lock nut, lock nut passes through the screw thread and is connected with the packing box. The utility model relates to a valve shaft overlaps dustproof construction, it is rational in infrastructure, improved the dustproof effect that valve shaft overlaps, prolonged the life of valve greatly.
Description
[technical field]
The utility model relates to the dust-proof technical field of valve, particularly a kind of valve shaft housing dustproof construction.
[background technique]
Valve rod is one of important component of valve, and is typically employed in inner sleeve or outboard bearing on valve body to the location of valve rod and guiding and realizes.In High Temperature High Pressure situation, the narrow limitation due to outboard bearing adopts the mode of inner sleeve to position and leading role valve rod usually.And at some special operation conditions; as in Coal Chemical Industry or some petrochemical equipments; its pipeline medium is generally containing solid particle or dust; and operation pressure and temperature are all very high; particle in medium or dust can enter in axle sleeve; cause the frictional force of valve rod and shaft room to increase, even damage valve rod or axle sleeve, have a strong impact on the working life of valve.
At present, the dust-control method of valve inner sleeve adopts O type circle or molded rubber circle usually, and both working life is limited, moreover, O type circle or molded rubber circle can not use under worst hot case, limit the using scope of valve to a great extent, be therefore necessary to propose a kind of valve shaft housing dustproof construction.
[model utility content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of valve shaft housing dustproof construction, and it is limited that it is intended to solve valve use occasion in prior art, and dust-proof effect is poor, the problem that working life is shorter.
For achieving the above object, the utility model proposes a kind of valve shaft housing dustproof construction, comprise valve body, stuffing box, axle sleeve, valve rod, dust guard, valve seat and spool, described stuffing box is independently arranged in the axis hole excessively of valve body, the upper end shoulder of described stuffing box is by gasket seal and valve body seamless link, axle sleeve is provided with in described stuffing box, described valve rod is built in axle sleeve, described valve rod is provided with a shaft shoulder, the described shaft shoulder is positioned at the below of stuffing box, thrust bearing is provided with between the described shaft shoulder and stuffing box, the underpart of described valve rod coordinates with spool installs, filler is filled with in the cavity that the top of described stuffing box and valve rod are formed, the below of described filler is provided with Packing seat, dust guard is provided with in the cavity that the bottom of described stuffing box and valve rod are formed, described dust guard is by some dust-proof seal rings, compensate disc spring, first pad and the second pad composition, a locking nut is installed in the below of described dust guard, described locking nut is connected with stuffing box by screw thread.
As preferably, described compensation disc spring, the first pad connect successively, and are arranged between dust-proof seal ring and axle sleeve, and described second pad is arranged between dust-proof seal ring and locking nut.
As preferably, described dust guard and locking nut are between axle sleeve and thrust bearing.
As preferably, described locking nut offers pre-tieholen.
As preferably, described dust-proof seal ring is made up of " V " RunddichtringO of 2 ~ 4 layers of compression molding.
As preferably, the opening of described " V " RunddichtringO is towards the inner chamber of valve body.
As preferably, described compensation disc spring is circular cone disk like, and its thickness is below 6mm.
The beneficial effects of the utility model: compared with prior art, a kind of valve shaft housing dustproof construction that the utility model provides, rational in infrastructure, by arranging dust guard in axle sleeve front end, solve the multiple narrow limitation that current axle sleeve is dust-proof, dust-proof seal ring in dust guard is " V " RunddichtringO composition of 2 ~ 4 layers of compression molding, the object of dust-proof seal ring pretension is achieved by locking nut, avoid ground-slag state medium enter axle sleeve and cause axle sleeve and stem wear or locking phenomenon, substantially increase the working life of valve, be provided with compensation disc spring in dust-proof seal ring bottom simultaneously, can automatic compensating dust-proof seal ring trace wearing and tearing, improve dust-proof effect, extend the working life of valve.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the structural representation of a kind of valve shaft housing dustproof construction of the utility model;
Fig. 2 is the structural representation in A portion in Fig. 1.
In figure: 1-valve body, 2-stuffing box, 3-axle sleeve, 4-gasket seal, 5-filler, 6-valve rod, 7-dust-proof seal ring, 8-thrust bearing, 9-valve seat, 10-spool, 11-compensate disc spring, 12-first pad, 13-locking nut, 50-Packing seat, the 60-shaft shoulder, 120-second pad, the pre-tieholen of 130-.
[embodiment]
For making the purpose of this utility model, technological scheme and advantage clearly understand, below by accompanying drawing and embodiment, the utility model is further elaborated.But should be appreciated that, specific embodiment described herein, only in order to explain the utility model, is not limited to scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
Consult Fig. 1 and Fig. 2, the utility model embodiment provides a kind of valve shaft housing dustproof construction, comprise valve body 1, stuffing box 2, axle sleeve 3, valve rod 6, dust guard, valve seat 9 and spool 10, described stuffing box 2 is independently arranged in the axis hole excessively of valve body 1, the upper end shoulder of described stuffing box 2 is by gasket seal 4 and valve body 1 seamless link, axle sleeve 3 is provided with in described stuffing box 2, described valve rod 6 is built in axle sleeve 3, described valve rod 6 is provided with a shaft shoulder 60, the described shaft shoulder 60 is positioned at the below of stuffing box 2, thrust bearing 8 is provided with between the described shaft shoulder 60 and stuffing box 2, the underpart of described valve rod 6 coordinates with spool 10 installs, filler 5 is filled with in the cavity that the top of described stuffing box 2 and valve rod 6 are formed, the below of described filler 5 is provided with Packing seat 50, dust guard is provided with in the cavity that the bottom of described stuffing box 2 and valve rod 6 are formed, described dust guard is by some dust-proof seal rings 7, compensate disc spring 11, first pad 12 and the second pad 120 form, a locking nut 13 is installed in the below of described dust guard, described locking nut 13 is connected with stuffing box 2 by screw thread.
As preferably, described compensation disc spring 11, first pad 12 connects successively, and is arranged between dust-proof seal ring 7 and axle sleeve 3, and described second pad 120 is arranged between dust-proof seal ring 7 and locking nut 13.
Described dust guard and locking nut 13, between axle sleeve 3 and thrust bearing 8, described locking nut 13 offer pre-tieholen 130.
Wherein, the shaft shoulder 60 on valve rod 6, makes stuffing box 2 pairs of valve rods 6 play spacing effect, prevents valve to be in operation and to fly out due to the effect of medium.
Further, the object of thrust bearing 8 is the phase mutual friction prevented between valve rod 6 with stuffing box 2, reduces the open and close torque of valve.
Further, described compensation disc spring 11, first pad 12 connects successively, and be arranged between dust-proof seal ring 7 and axle sleeve 3, described second pad 120 is arranged between dust-proof seal ring 7 and locking nut 13, compensate disc spring 11 can auto-compensation dust-proof seal ring 7 trace wearing and tearing, improve working life and the dust-proof effect of dust-proof seal ring 7.
Further, described dust-proof seal ring 7 be made up of " V " RunddichtringO of 2 ~ 4 layers of compression molding and the opening of " V " RunddichtringO towards the inner chamber of valve body 1, make pressure medium can be supplied to V-type opening certain effect power, prevent ground-slag state medium in valve pocket from entering in axle sleeve, further increase the dust-proof effect of valve, ensure that the operational effect that valve is good in the environment of many dirt.
The utility model implementation procedure:
The implementation procedure of a kind of valve shaft housing dustproof construction of the utility model, stuffing box 2 and valve body 1 independently leave, achieve the object that dust-proof seal ring 7 can be set on stuffing box 2, dust-proof seal ring 7 carries out pretension by locking nut 13, realize the effective sealing of dust-proof seal ring 7 and stuffing box 2 and valve rod 6, enter in axle sleeve to prevent ground-slag state medium in valve pocket, also be provided with bottom dust-proof seal ring 7 simultaneously and compensate disc spring 11, can automatic compensating valve working time dust-proof seal ring 7 trace wearing and tearing, extend the working life of dust-proof seal ring 7.At dust-proof seal ring 7 first pad 12 and the second pad 120 setting up and down, prevent from locking nut 13 in locking process and compensate disc spring 11 damaging dust-proof seal ring 7, simultaneously by arranging the shaft shoulder 60 on valve rod 6, stuffing box 2 pairs of valve rods 6 are carried out spacing, and can prevent valve rod 6 from flying out under medium effect in valve, the object of thrust bearing 8 is the phase mutual friction prevented between valve rod 6 with stuffing box 2, reduces the open and close torque of valve.It is limited that a kind of valve shaft housing dustproof construction of the utility model solves valve use occasion in prior art, and dust-proof effect is poor, the problem that working life is shorter, while improve the dust-proof effect of whole device, extends the working life of valve.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a valve shaft housing dustproof construction, comprise valve body (1), stuffing box (2), axle sleeve (3), valve rod (6), dust guard, valve seat (9) and spool (10), it is characterized in that: described stuffing box (2) is independently arranged in the axis hole excessively of valve body (1), the upper end shoulder of described stuffing box (2) is by gasket seal (4) and valve body (1) seamless link, axle sleeve (3) is provided with in described stuffing box (2), described valve rod (6) is built in axle sleeve (3), described valve rod (6) is provided with a shaft shoulder (60), the described shaft shoulder (60) is positioned at the below of stuffing box (2), thrust bearing (8) is provided with between the described shaft shoulder (60) and stuffing box (2), the underpart of described valve rod (6) coordinates with spool (10) installs, filler (5) is filled with in the cavity that the top of described stuffing box (2) and valve rod (6) are formed, the below of described filler (5) is provided with Packing seat (50), dust guard is provided with in the cavity that the bottom of described stuffing box (2) and valve rod (6) are formed, described dust guard is by some dust-proof seal rings (7), compensate disc spring (11), first pad (12) and the second pad (120) composition, a locking nut (13) is installed in the below of described dust guard, described locking nut (13) is connected with stuffing box (2) by screw thread.
2. a kind of valve shaft housing dustproof construction as claimed in claim 1, it is characterized in that: described compensation disc spring (11), the first pad (12) connect successively, and being arranged between dust-proof seal ring (7) and axle sleeve (3), described second pad (120) is arranged between dust-proof seal ring (7) and locking nut (13).
3. a kind of valve shaft housing dustproof construction as claimed in claim 1, is characterized in that: described dust guard and locking nut (13) are positioned between axle sleeve (3) and thrust bearing (8).
4. a kind of valve shaft housing dustproof construction as claimed in claim 1, is characterized in that: described locking nut (13) offers pre-tieholen (130).
5. a kind of valve shaft housing dustproof construction as claimed in claim 1 or 2, is characterized in that: described dust-proof seal ring (7) is made up of " V " RunddichtringO of 2 ~ 4 layers of compression molding.
6. a kind of valve shaft housing dustproof construction as claimed in claim 5, is characterized in that: the opening of described " V " RunddichtringO is towards the inner chamber of valve body (1).
7. a kind of valve shaft housing dustproof construction as claimed in claim 5, is characterized in that: described dust-proof seal ring (7) has and compensates disc spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776034.XU CN205026201U (en) | 2015-10-08 | 2015-10-08 | Valve shaft overlaps dustproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776034.XU CN205026201U (en) | 2015-10-08 | 2015-10-08 | Valve shaft overlaps dustproof construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205026201U true CN205026201U (en) | 2016-02-10 |
Family
ID=55258734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520776034.XU Expired - Fee Related CN205026201U (en) | 2015-10-08 | 2015-10-08 | Valve shaft overlaps dustproof construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205026201U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221829A (en) * | 2015-10-08 | 2016-01-06 | 浙江中德自控科技股份有限公司 | A kind of valve shaft housing dustproof construction |
| CN107166085A (en) * | 2016-03-08 | 2017-09-15 | 阿自倍尔株式会社 | Regulating valve |
| CN108019561A (en) * | 2016-10-31 | 2018-05-11 | 阿自倍尔株式会社 | Regulating valve |
-
2015
- 2015-10-08 CN CN201520776034.XU patent/CN205026201U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221829A (en) * | 2015-10-08 | 2016-01-06 | 浙江中德自控科技股份有限公司 | A kind of valve shaft housing dustproof construction |
| CN107166085A (en) * | 2016-03-08 | 2017-09-15 | 阿自倍尔株式会社 | Regulating valve |
| US10167976B2 (en) | 2016-03-08 | 2019-01-01 | Azbil Corporation | Regulating valve |
| CN108019561A (en) * | 2016-10-31 | 2018-05-11 | 阿自倍尔株式会社 | Regulating valve |
| CN108019561B (en) * | 2016-10-31 | 2019-12-03 | 阿自倍尔株式会社 | Control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20191008 |