CN205207883U - Sealed dust keeper of valve - Google Patents
Sealed dust keeper of valve Download PDFInfo
- Publication number
- CN205207883U CN205207883U CN201521016864.9U CN201521016864U CN205207883U CN 205207883 U CN205207883 U CN 205207883U CN 201521016864 U CN201521016864 U CN 201521016864U CN 205207883 U CN205207883 U CN 205207883U
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- Prior art keywords
- valve rod
- valve
- dust
- ring
- circular
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Abstract
The utility model discloses a sealed dust keeper of valve, be equipped with the screw thread on the valve rod, screw thread department on the valve rod is equipped with the shaft shoulder, the shaft shoulder passes through the screw thread and installs on the valve rod, valve stem frame's inner wall is equipped with the convex shoulder, install on the convex shoulder in the valve stem frame and keep off the ring, be equipped with mechanical seal between the shaft shoulder on the valve rod and the ring of the fender on the valve stem frame inner wall, the outer wall at valve stem frame's top is equipped with the screw thread, valve stem frame's top end is equipped with dust prevention slot, dust prevention slot is circular, dust prevention slot's cross sectional shape is the rectangle, the shield is installed at valve stem frame's top. The utility model discloses a technique aim at provide one kind be equipped with mechanical seal between valve rod and the valve stem frame, reduce the valve switch moment, be equipped with two dust keeper's valve seal dust keeper between valve rod and valve stem frame, this kind of sealing device can reduce the valve reveal, increase the valve the security, improve the reliability that the valve used at extreme condition.
Description
Technical field
The utility model relates to valve field, particularly a kind of sealing dust-proof device of valve.
Background technique
Valve is the equipment for liquid control system, valve is varied, no matter be on industry equipment, or on housed device, valve is nearly all ubiquitous, valve is in fluid system, be used for controlling the direction of fluid, pressure, flow device be the medium in pipe arrangement and equipment (liquid, gas, powder) is flowed or stops and the device of its flow can be controlled.
Valve main rising on pipeline is cut off and throttling action.Valve is controlling component in pipeline fluid transporting system, and it is used to change path section and media flow direction, has the functions such as water conservancy diversion, cut-off, throttling, non-return, shunting or overflow release.For the valve that fluid controls, various valves used from the simplest stop valve to very complicated robot control system(RCS), its kind and specification various, the inside nominal diameter of valve reaches greatly the industrial pipeline valve of 10m to latus rectum from atomic little Gauge Valves.Can be used for controlling all kinds such as water, steam, oil product, gas, mud, various Korrosionsmedium, liquid metal and radioactive fluid fluidly to flow.
Valve usually can be revealed in fed sheet of a media process, usually the danger medium leaked out can cause produces dangerous accident generation, the valve rod of conventional valves and the sealing at valve rod frame place have small leakage usually, particularly packing seal, packing seal is very large to the frictional force of valve rod, packing seal can increase the moment of torsion that valve rod rotates, after Long-Time Service, gland sealed sealing effect declines very fast, usually a lot of valves is all used in the place of bad environments, as oil equipment valve, exploring equipment valve, in use unavoidable silt, sewage can enter into the controlling component of valve, the control of valve is deteriorated, affect the sealing effect of valve, easily wearing and tearing caused to valve rod and cause the seal leakage of valve rod place, thus affect the sealing reliability of valve, destroy the sealing of valve.
Model utility content
For the deficiency existed in above-mentioned technology, the moment that technical purpose of the present utility model is to provide a kind of and is provided with mechanical seal between valve rod and valve rod frame, reduce valve switch, between valve rod and valve rod frame, be provided with the valve seal dust guard of two dust guard, this seal arrangement can reduce valve leakage, increase valve Security, improve the reliability that valve uses at mal-condition.
The utility model is achieved through the following technical solutions:
A kind of sealing dust-proof device of valve, the sealing dust-proof device of described valve comprises: valve rod, valve rod frame, described valve rod is arranged on valve rod frame, described valve rod is provided with screw thread, screw thread place on described valve rod is provided with the shaft shoulder, the described shaft shoulder is arranged on valve rod by screw thread, the inwall of described valve rod frame is provided with convex shoulder, convex shoulder in described valve rod frame is provided with baffle ring, mechanical seal is provided with between baffle ring on the shaft shoulder on described valve rod and valve rod frame inwall, the outer wall at the top of described valve rod frame is provided with screw thread, the top end face of described valve rod frame is provided with dustproof groove, described dustproof groove is circular, the sectional shape of described dustproof groove is rectangle, the top of described valve rod frame is provided with dust cover.
In technique scheme, by being provided with screw thread on valve rod, valve rod is provided with the shaft shoulder, make it possible to the rotating ring better installing mechanical seal, and the spacing between rotating ring and stationary ring can be regulated by screw thread, the baffle ring that the convex shoulder be provided with in valve rod frame is installed, the stationary ring of mechanical seal can be installed better, rotating ring can coordinate with stationary ring, reach the object of sealing, the inwall of valve rod frame is provided with dismountable convex shoulder, make when client does not need mechanical seal and wants packing seal, the shaft shoulder on convex shoulder and valve rod can be removed and reach and form gland sealed object, be convenient to dust cover is installed by the screw thread be provided with on the outer wall at the top of valve rod frame, also play dust-proof effect and can the effect of quick mounting dust cover simultaneously, improve installation efficiency, by being provided with dustproof groove at the top of valve rod frame, dust cover is coordinated with valve rod, dustproof groove and installs, the dirt exclusion capabilities of valve is improved, dust-proof effect is played to valve, and plays the effect that mechanical seal is protected.
Further, the mechanical seal be provided with between described valve rod and valve rod frame, described mechanical seal comprises stationary ring, rotating ring, described stationary ring is arranged in baffle ring, described stationary ring coordinates with the shaft shoulder on valve rod to be installed, described mechanical seal is non-integrated mechanical sealing, is provided with O RunddichtringO between described stationary ring and baffle ring, is provided with O RunddichtringO between described rotating ring and the shaft shoulder.
Further, the described shape of the shaft shoulder installed that coordinates with mechanical seal is annulus, the inner ring surface of the described shaft shoulder is provided with screw thread, described screw thread is fine thread, the end face that the described shaft shoulder coordinates with mechanical seal is provided with seal groove, be provided with O RunddichtringO in described seal groove, the material of the described shaft shoulder is metal material.
In technique scheme, select non-integrated mechanical sealing can regulate according to the different conditions of valve, the cost of usual non-integrated mechanical sealing is also more cheap, and the fine thread be provided with can be finely tuned the position of rotating ring.
Further, described dust cover is made up of the cylinder of a circular top cover and two coaxial inner conductors, the top cover of described dust cover has circular hole, described circular-hole internal-wall is provided with two circular grooves parallel to each other, described cylinder is divided into inner cylinder and outer cylinder, circular groove in the circular top cover of described dust cover is divided into circular groove and lower circular groove, dust-proof cotton is provided with in described upper circular groove, the shape of described dust-proof cotton is ring-type, the internal diameter of described dust-proof cotton is less than the internal diameter of valve rod, the external diameter of described dust-proof cotton is greater than the diameter of circular groove, rubber ring is provided with in described lower circular groove, described rubber ring is circular, the sectional shape of described rubber ring is rectangle, the internal diameter of described rubber ring is less than the internal diameter of valve rod, the external diameter of described rubber ring is greater than the diameter of circular groove.
In technique scheme, by the top of dust cover is provided with circular hole, the installation of convenient dust-proofing lid, by being provided with two circular grooves parallel to each other on the circular-hole internal-wall of dust cover, make it possible to seal between valve rod and dust cover, the inner core be provided with mainly plays sealing, the urceolus be provided with both had played the effect of primary seal, also hard-wired effect is played, by the upper circular groove be provided with, and dust-proof cotton is provided with in upper circular groove, elementary obstruct is carried out to the impurity of outside, by the lower circular groove be provided with, and rubber ring is provided with in lower circular groove, degree of depth obstruct is carried out to the impurity of outside, and rubber ring and dust-proof cotton are designed slightly large, make the sealing and dustproof ability of rubber ring and dust-proof cotton better.
Further, the end face of the inner cylinder on described dust cover is provided with one or two circular grooves, the sectional shape of described circular groove is rectangle, O RunddichtringO is provided with in described circular groove, the wall thickness of described circular groove is less than the width of dustproof groove, and the circular groove of described inner cylinder is arranged on the inside of dustproof groove.
In technique scheme, at the circular groove that the end face of inner core is provided with, and in circular groove, be provided with O RunddichtringO, make the dust-proof effect of inner core better.
Further, the inwall of the outer cylinder on described dust cover is provided with screw thread, and described screw thread is fine thread, and the outer wall diameter of described outer cylinder is equal with the axis of great circle of dust cover.
In technique scheme, be provided with fine thread by the inwall of the outer cylinder on dust cover, make dust cover can be arranged on valve rod frame, by fine thread, more easily adjust the position of dust cover.
The beneficial effects of the utility model are:
1, adopt mechanical seal by the sealing between the valve rod and valve rod frame of valve, make the sealability of valve better, reduce the leakage of valve, improve the Security of valve, and the moment of valve open/closedown can be reduced, improve the operability of valve;
2, along the structure of valve rod shaft axis movement, can finely tune the rotating ring of mechanical seal by the shaft shoulder is set to, make the sealing at valve rod and valve rod frame place can be more reliable;
3, by being provided with screw thread on the inwall of the outer cylinder of dust cover, and screw thread is provided with on the outer wall of valve rod top of the trellis, dust cover can be better arranged on valve rod frame, install compared to by bolt, the time over half can be saved by screw thread, the circular top cover of dust cover is provided with circular groove, and dust-proof cotton is installed in circular groove, define the elementary dust-proof obstruct of valve;
4, by being provided with circular groove on the end face of the inner core of dust cover, in circular groove, seal ring being installed, the circular top cover of dust cover is provided with lower circular groove, and in lower circular groove, rubber ring being installed, defining the most important dust-proof obstruct of valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of model utility.
Mark in figure: 1 be valve rod frame, 2 be valve rod, 3 be the shaft shoulder, 4 be baffle ring, 5 for mechanical seal, 5-1 be stationary ring, 5-2 be rotating ring, 6 is O RunddichtringO, 7 be dust cover, 8 be rubber ring, 9 be dust-proof cotton, 10 be dustproof groove.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
The sealing dust-proof device of valve as shown in Figure 1, the sealing dust-proof device of described valve comprises: valve rod frame 1, valve rod 2, the shaft shoulder 3, baffle ring 4, mechanical seal 5, stationary ring 5-1, rotating ring 5-2, O RunddichtringO 6, dust cover 7, rubber ring 8, dust-proof cotton 9, dustproof groove 10, described valve rod 2 is arranged on valve rod frame 1, described valve rod 2 is provided with screw thread, screw thread place on described valve rod 2 is provided with the shaft shoulder 3, the described shaft shoulder 3 is arranged on valve rod 2 by screw thread, the inwall of described valve rod frame 1 is provided with convex shoulder, convex shoulder in described valve rod frame 1 is provided with baffle ring 4, mechanical seal 5 is provided with between baffle ring 4 on the shaft shoulder 3 on described valve rod 2 and valve rod frame 1 inwall, the outer wall at the top of described valve rod frame 1 is provided with screw thread, the top end face of described valve rod frame 1 is provided with dustproof groove 10, described dustproof groove 10 is circular, the sectional shape of described dustproof groove 10 is rectangle, the top of described valve rod frame 1 is provided with dust cover 10,
The mechanical seal 5 be provided with between described valve rod 2 and valve rod frame 1, described mechanical seal 5 comprises stationary ring 5-1, rotating ring 5-2, stationary ring 5-1 can select according to the different of the medium in pipeline from the material of rotating ring 5-2, when for river, the material of stationary ring 5-1 can be silicon carbide, the material of rotating ring 5-2 is silicon carbide, described stationary ring 5-1 is arranged in baffle ring 4, described stationary ring 5-1 coordinates with the shaft shoulder 3 on valve rod 2 and installs, described mechanical seal 5 is non-integrated mechanical sealing, O RunddichtringO is provided with between described stationary ring 5-1 and baffle ring 4, O RunddichtringO 6 is provided with between described rotating ring 5-2 and the shaft shoulder 3, the material of O RunddichtringO 6 can be fluorine rubber,
Describedly the shape of the shaft shoulder 3 installed is coordinated to be annulus with mechanical seal 5, the inner ring surface of the described shaft shoulder 3 is provided with screw thread, described screw thread is fine thread, the end face that the described shaft shoulder 3 coordinates with mechanical seal 5 is provided with seal groove, O RunddichtringO 6 is provided with in described seal groove, the material of the described shaft shoulder 3 is 304 materials, and 304 have good anticorrosive property, and general medium can not cause 304 materials to be got rusty;
Described dust cover 7 is made up of the cylinder of a circular top cover and two coaxial inner conductors, the top cover of described dust cover 7 has circular hole, described circular-hole internal-wall is provided with two circular grooves parallel to each other, described cylinder is divided into inner cylinder and outer cylinder, circular groove in the circular top cover of described dust cover 7 is divided into circular groove and lower circular groove, dust-proof cotton 9 are provided with in described upper circular groove, the described dust-proof shape of cotton 9 is ring-type, the described dust-proof internal diameter of cotton 9 is less than the internal diameter of valve rod 2, the described dust-proof external diameter of cotton 9 is greater than the diameter of circular groove, rubber ring 8 is provided with in described lower circular groove, described rubber ring 8 is circular, the sectional shape of described rubber ring 8 is rectangle, the internal diameter of described rubber ring 8 is less than the internal diameter of valve rod 2, the external diameter of described rubber ring 8 is greater than the diameter of circular groove, the material of dust cover 7 can be cast steel, process again after can directly casting, the material being arranged on the O RunddichtringO 2 in circular groove is fluorine rubber, installation in upper circular groove dust-proof cotton 9 material be PVC, PVC has high strength, anti-corrosion, firm, the elementary dirt exclusion capabilities of valve can be improved, the material of the rubber ring 8 of the installation in lower circular groove is fluorine rubber, the material of fluorine rubber can make dust-proof better effects if, improve the performance sealed between valve rod and valve rod frame, the dust of outside is intercepted,
The end face of the inner cylinder on described dust cover 7 is provided with one or two circular grooves, the sectional shape of described circular groove is rectangle, be provided with O RunddichtringO 6 in described circular groove, the wall thickness of described circular groove is less than the width of dustproof groove 10, and the circular groove of described inner cylinder is arranged on the inside of dustproof groove 10;
The inwall of the outer cylinder on described dust cover 7 is provided with screw thread, and described screw thread is fine thread, and the outer wall diameter of described outer cylinder is equal with the axis of great circle of dust cover 7.
Dust cover 7, the shaft shoulder 3, baffle ring 4, valve rod 2 and valve rod frame 1 all should through Wetted constructures, to eliminate the stress in parts.
Claims (6)
1. the sealing dust-proof device of a valve, the sealing dust-proof device of described valve comprises: valve rod (2), valve rod frame (1), described valve rod (2) is arranged on valve rod frame (1), it is characterized in that, described valve rod (2) is provided with screw thread, screw thread place on described valve rod (2) is provided with the shaft shoulder (3), the described shaft shoulder (3) is arranged on valve rod (2) by screw thread, the inwall of described valve rod frame (1) is provided with convex shoulder, convex shoulder in described valve rod frame (1) is provided with baffle ring (4), mechanical seal (5) is provided with between the shaft shoulder (3) on described valve rod (2) and the baffle ring (4) on valve rod frame (1) inwall, the outer wall at the top of described valve rod frame (1) is provided with screw thread, the top end face of described valve rod frame (1) is provided with dustproof groove (10), described dustproof groove (10) is circular, the sectional shape of described dustproof groove (10) is rectangle, the top of described valve rod frame (1) is provided with dust cover (7).
2. the sealing dust-proof device of valve according to claim 1, it is characterized in that, the mechanical seal (5) be provided with between described valve rod (2) and valve rod frame (1), described mechanical seal (5) comprises stationary ring (5-1), rotating ring (5-2), described stationary ring (5-1) is arranged in baffle ring (4), described stationary ring (5-1) coordinates with the shaft shoulder (3) on valve rod (2) to be installed, described mechanical seal (5) is non-integrated mechanical sealing, O RunddichtringO (6) is provided with between described stationary ring (5-1) and baffle ring (4), O RunddichtringO (6) is provided with between described rotating ring (5-2) and the shaft shoulder (3).
3. the sealing dust-proof device of valve according to claim 1, it is characterized in that, the described shape coordinating the shaft shoulder (3) installed with mechanical seal (5) is annulus, the inner ring surface of the described shaft shoulder (3) is provided with screw thread, described screw thread is fine thread, the end face that the described shaft shoulder (3) coordinates with mechanical seal (5) is provided with seal groove, is provided with O RunddichtringO (6) in described seal groove, and the material of the described shaft shoulder (3) is metal material.
4. the sealing dust-proof device of valve according to claim 1, it is characterized in that, described dust cover (7) is made up of the cylinder of a circular top cover and two coaxial inner conductors, the top cover of described dust cover (7) has circular hole, described circular-hole internal-wall is provided with two circular grooves parallel to each other, described cylinder is divided into inner cylinder and outer cylinder, circular groove in the circular top cover of described dust cover (7) is divided into circular groove and lower circular groove, dust-proof cotton (9) is provided with in described upper circular groove, the shape of described dust-proof cotton (9) is ring-type, the internal diameter of described dust-proof cotton (9) is less than the internal diameter of valve rod (2), the external diameter of described dust-proof cotton (9) is greater than the diameter of circular groove, rubber ring (8) is provided with in described lower circular groove, described rubber ring (8) is circular, the sectional shape of described rubber ring (8) is rectangle, the internal diameter of described rubber ring (8) is less than the internal diameter of valve rod (2), the external diameter of described rubber ring (8) is greater than the diameter of circular groove.
5. the sealing dust-proof device of valve according to claim 3, it is characterized in that, the end face of the inner cylinder on described dust cover (7) is provided with one or two circular grooves, the sectional shape of described circular groove is rectangle, O RunddichtringO (6) is provided with in described circular groove, the wall thickness of described circular groove is less than the width of dustproof groove (10), and the circular groove of described inner cylinder is arranged on the inside of dustproof groove (10).
6. the sealing dust-proof device of valve according to claim 4, it is characterized in that, the inwall of the outer cylinder on described dust cover (7) is provided with screw thread, and described screw thread is fine thread, and the outer wall diameter of described outer cylinder is equal with the axis of great circle of dust cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521016864.9U CN205207883U (en) | 2015-12-09 | 2015-12-09 | Sealed dust keeper of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521016864.9U CN205207883U (en) | 2015-12-09 | 2015-12-09 | Sealed dust keeper of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207883U true CN205207883U (en) | 2016-05-04 |
Family
ID=55845600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521016864.9U Active CN205207883U (en) | 2015-12-09 | 2015-12-09 | Sealed dust keeper of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207883U (en) |
-
2015
- 2015-12-09 CN CN201521016864.9U patent/CN205207883U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Kuang Erhua Inventor before: Li Yan |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170627 Address after: To help the 637200 Nanchong City Industrial Park in Sichuan Province in Xichong County Patentee after: Sichuan Hongfan special equipment Engineering Co. Ltd. Address before: 610000 Chengdu City, Wuhou District Province, the South Ring Road, No. two, No. 1, No. 1, floor 31, No. 5 Patentee before: CHENGDU DESHANNENG TECHNOLOGY CO., LTD. |