CN203395231U - Closed waterproof thermal recovery gate valve - Google Patents
Closed waterproof thermal recovery gate valve Download PDFInfo
- Publication number
- CN203395231U CN203395231U CN201320468883.XU CN201320468883U CN203395231U CN 203395231 U CN203395231 U CN 203395231U CN 201320468883 U CN201320468883 U CN 201320468883U CN 203395231 U CN203395231 U CN 203395231U
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- support
- valve
- pressure cap
- end surface
- stem mut
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Abstract
The utility model discloses a closed waterproof thermal recovery gate valve, and belongs to the technical field of manufacture for valves of petroleum pipelines. The closed waterproof thermal recovery gate valve is characterized in that a valve bonnet is connected to the upper portion of a valve by bolts; internal threads of the lower portion of a support are connected with external threads of the upper portion of the valve bonnet in a screwed manner; the upper end of a valve stem is screwed in internal threads of the lower end of a valve stem nut; a bearing pressing cap is screwed in internal threads of the upper end of the support, and a lock nut is arranged between the bearing pressing cap and the support; the upper end of the valve stem nut penetrates an inner hole of the bearing pressing cap and extends out of the bearing pressing cap, and the lower end of the valve stem nut is arranged inside the support; two one-way thrust ball bearings are respectively arranged between the lower end surface of the bearing pressing cap and a shaft shoulder on the valve stem nut and between the shaft shoulder on the valve stem nut and a hole shoulder in a hole of the support; a dust cover is sleeved on the outside of the support and is a rotator in the shape of a cylindrical pipe, an inner hole of the dust cover is in clearance fit with the outer-diameter side of the support, and a sealing ring is arranged between fit surfaces of the inner hole of the dust cover and the outer-diameter side of the support; a sealing pad is arranged between the upper end surface of the support and the lower end surface of the lock nut between the bearing pressing cap and the support.
Description
Technical field
The utility model relates to a kind of closed waterproof thermal recovery gate valve, belongs to petroleum pipeline valve manufacturing technology field.
Background technique
Being widely used in the thermal recovery gate valve in petroleum pipeline, is a kind of valve opening and closing for controlling petroleum pipeline, and it requires valve to have to open and close flexibly, the good characteristic of good seal performance, long service life.General this valve is all keeping above-mentioned characteristic at the use initial stage, but the passing along with life cycle, nature rainwater is also being mingled with the continuous immersion of wilderness sand and dust, original good characteristic weakens thereupon, the particularly corrosion between movement parts, wear and tear hurried, light have influence on flexibility ratio and the tightness of valve opening and closing, heavy rust extremely or seriously leaks, thereby causes the inefficacy in advance of valve.Trace it to its cause, bleeding of rainwater is the arch-criminal who causes corrosion between valve motion part, and sand and dust are by means of the rainwater immersion of taking advantage of a favourable situation.Therefore block rainwater, do not allow its inside that flows into valve be the key that prevents movement parts corrosion and wearing and tearing.The structural design that existing thermal recovery gate valve immerses without rainwater-proof, even if there is so-called dust-proof cover to be also only welded by thin type iron plate circle system, not only out-of-shape, leakproofness extreme difference, and can not sealing component be set at end face and wall, thereby cause valve in not long life cycle, between valve rod and support, there are corrosion, wearing and tearing, whole valve is scrapped.
Summary of the invention
For existing thermal recovery gate valve, be subject to rain erosion and the design that causes losing efficacy is in advance not enough, the utility model proposes a kind of closed waterproof thermal recovery gate valve, by the corresponding Sealing of reasonable disposition, make rainwater, sand and dust can not enter valve internal, thereby reach valve, keep for a long time opening and closing flexibly, seal stable object.
To achieve these goals, the utility model Bian gets following technological scheme and implements: a kind of closed waterproof thermal recovery gate valve, comprise valve body, valve gap, dust-proof cover, support, valve rod, Stem Mut, lock nut, sealing gasket, bearing pressure cap, oil sealing, bearing, seal ring, valve gap is bolted the top at valve body; Support is screwed and is connected mutually with valve upper part of the cover outside thread by the internal thread of bottom; The upper end of valve rod screws in the internal thread of Stem Mut lower end; Bearing pressure cap screws in the internal thread of support upper end, and is provided with lock nut between the two; The upper end of Stem Mut is through the endoporus of bearing pressure cap, and outside projecting shaft pressure-bearing cap, the lower end of Stem Mut is inserted at internal stent; Between the lower end surface and the shaft shoulder on Stem Mut of bearing pressure cap, be provided with two single direction thrust ball bearings between the shoulder of the shaft shoulder on Stem Mut and bracket holes Nei hole; The outer cover of support has dust-proof cover, and dust-proof cover is cylindrical tube solid of rotation, between its endoporus and the external diameter of support, is Spielpassung, and between fitting surface, is provided with seal ring; Between the lower end surface of the lock nut between bearing pressure cap and support and the upper-end surface of support, be provided with sealing gasket; Between the endoporus of bearing pressure cap and valve rod external diameter, be provided with oil sealing.
The utility model is by the fitting surface between dust-proof cover and support, seal ring being set, and stifled exhausted rainwater enters internal stent from the port of dust-proof cover; By between the lower end surface at lock nut and the upper-end surface of support, sealing gasket being set, stifled exhausted rainwater enters internal stent from the upper-end surface of support; By oil sealing being set between the endoporus at bearing pressure cap and valve rod external diameter, stifled exhausted rainwater enters internal stent between bearing pressure cap and valve rod again, thereby guaranteed that single direction thrust ball bearing, stuffing box packing and the correlated parts of internal stent avoid the erosion of rainwater and sand and dust, reached valve and keep for a long time opening and closing flexibly, seal stable object.
The utlity model has waterproof and dustproof performance good, open and close flexibly, to seal stable retentivity strong, the long service life advantage of waiting so long.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment
As shown in Figure 1, valve gap 3 is connected to the top of valve body 1 by bolt 15; Support 7 is screwed and is connected mutually with the outside thread on valve gap 3 tops by the internal thread of bottom; The upper end of valve rod 2 screws in the internal thread of Stem Mut 6 lower ends; Bearing pressure cap 11 screws in the internal thread of support 7 upper ends, and is provided with lock nut 8 between the two, between the lower end surface of lock nut 8 and the upper-end surface of support 7, is provided with sealing gasket 10; The endoporus of bearing pressure cap 11 is passed in the upper end of Stem Mut 6, and is connected to a fixed with handwheel 9 outside projecting shaft pressure-bearing cap 11, between the endoporus of bearing pressure cap 11 and the external diameter of valve rod 2, is provided with oil sealing 12; The inside at support 1 is inserted in the lower end of Stem Mut 6; Between the shaft shoulder between the shaft shoulder on bearing pressure cap 11 lower end surface and Stem Mut 6, on Stem Mut 6 and support 7 Kong Nei hole shoulders, be provided with two single direction thrust ball bearings 13; The outer cover of support 7 has dust-proof cover 5; Dust-proof cover 5 is cylindrical tube solid of rotation, is Spielpassung, and between fitting surface, is provided with seal ring 14 between its endoporus and the external diameter of support 7.
The utility model is by the fitting surface between dust-proof cover 5 and support 7, seal ring 14 being set, and stifled exhausted rainwater enters the inside of support 7 from the port of dust-proof cover 5; By between the lower end surface at lock nut 8 and the upper-end surface of support 7, sealing gasket 10 being set, stifled exhausted rainwater enters support 7 inside from the upper-end surface of support 7; By oil sealing 12 being set between the endoporus at bearing pressure cap 11 and the external diameter of valve rod 2, stifled exhausted rainwater is from entering the inside of support 7 between bearing pressure cap 11 and valve rod 2 again, thereby the correlated parts such as two single direction thrust ball bearings 13, stuffing box packing 16 and packing pressure cap 4 that guaranteed support 7 inside are avoided the erosion of rainwater and entering of sand and dust, reach valve and keep for a long time opening and closing flexibly, seal stable object.
As mentioned above, embodiment of the present utility model is explained, but as long as not departing from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection domain of the present utility model.
Claims (1)
1. a closed waterproof thermal recovery gate valve, comprises valve body, valve gap, dust-proof cover, support, valve rod, Stem Mut, lock nut, sealing gasket, bearing pressure cap, oil sealing, bearing, seal ring, it is characterized in that valve gap is bolted the top at valve body; Support is screwed and is connected mutually with valve upper part of the cover outside thread by the internal thread of bottom; The upper end of valve rod screws in the internal thread of Stem Mut lower end; Bearing pressure cap screws in the internal thread of support upper end, and is provided with lock nut between the two; The upper end of Stem Mut is through the endoporus of bearing pressure cap, and outside projecting shaft pressure-bearing cap, the lower end of Stem Mut is inserted at internal stent; Between the lower end surface and the shaft shoulder on Stem Mut of bearing pressure cap, be provided with two single direction thrust ball bearings between the shoulder of the shaft shoulder on Stem Mut and bracket holes Nei hole; The outer cover of support has dust-proof cover, and dust-proof cover is cylindrical tube solid of rotation, between its endoporus and the external diameter of support, is Spielpassung, and between fitting surface, is provided with seal ring; Between the lower end surface of the lock nut between bearing pressure cap and support and the upper-end surface of support, be provided with sealing gasket; Between the endoporus of bearing pressure cap and valve rod external diameter, be provided with oil sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468883.XU CN203395231U (en) | 2013-08-02 | 2013-08-02 | Closed waterproof thermal recovery gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468883.XU CN203395231U (en) | 2013-08-02 | 2013-08-02 | Closed waterproof thermal recovery gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395231U true CN203395231U (en) | 2014-01-15 |
Family
ID=49906764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320468883.XU Expired - Lifetime CN203395231U (en) | 2013-08-02 | 2013-08-02 | Closed waterproof thermal recovery gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344002A (en) * | 2013-08-02 | 2015-02-11 | 中国石油天然气股份有限公司 | Closed waterproof thermal recovery gate valve |
-
2013
- 2013-08-02 CN CN201320468883.XU patent/CN203395231U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344002A (en) * | 2013-08-02 | 2015-02-11 | 中国石油天然气股份有限公司 | Closed waterproof thermal recovery 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: 20140115 |