CN204284460U - Compensation sealing reduction valve - Google Patents
Compensation sealing reduction valve Download PDFInfo
- Publication number
- CN204284460U CN204284460U CN201420688271.6U CN201420688271U CN204284460U CN 204284460 U CN204284460 U CN 204284460U CN 201420688271 U CN201420688271 U CN 201420688271U CN 204284460 U CN204284460 U CN 204284460U
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- CN
- China
- Prior art keywords
- valve rod
- valve
- connecting sleeve
- connecting head
- compensation sealing
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to compensation sealing reduction valve.The reduction valve that object is to provide should have good seal performance, difficulty of processing is little and cost of production is low feature.Technological scheme is: compensation sealing reduction valve, comprises valve body, valve rod, valve gap and power mechanism; Valve inner forms admission passage by cutting off and goes out vapour passage, partition is shaped with two valve seats, valve rod is shaped with flap and lower Disc; It is characterized in that valve rod is coaxially arranged by the upper valve rod with upper flap and the lower valve rod with lower Disc to form, between upper valve rod and lower valve rod, collocation structure is installed; Collocation structure comprise be arranged on connecting head bottom upper valve rod, be arranged on lower valve rod top and for lock connecting head connecting sleeve, be positioned in connecting sleeve for the elastic component eliminating axial spacing between connecting head and connecting sleeve and the weld part that connecting sleeve and lower valve rod are fixed as one; The boss of described connecting head can vertically be positioned in the cavity that connecting sleeve and lower valve rod formed slidably.
Description
Technical field
The utility model relates to a kind of conveying equipment for fluid substances, specifically a kind of reduction valve.
Background technique
Reduction valve is the vitals in conveying equipment for fluid substances, is widely used in the multiple industries such as petrochemical industry, chemical industry, metallurgy, papermaking, sugaring, textile printing and dyeing.Existing reduction valve adopts integrated type valve rod (in valve rod, upper flap and lower Disc are connected as a single entity) usually, for ensureing that valve has good sealability, upper flap and lower Disc must close with two valve seats respectively simultaneously, therefore accurately will control the spacing of flap and lower Disc in process of production.But such valve rod difficulty of processing is higher, cost of production is comparatively large, also needs further improvement.
Model utility content
The purpose of this utility model overcomes the deficiency in above-mentioned background technology, provides a kind of compensation sealing reduction valve, and this reduction valve should have good seal performance, difficulty of processing is little and cost of production is low feature.
The technical solution of the utility model is: compensation sealing reduction valve, comprise valve body, to be vertically positioned in valve body and can axial motion valve rod, be fixed on the valve gap on valve body and the power mechanism for actuate valve stem lifting; Described valve inner forms admission passage by cutting off and goes out vapour passage, partition is shaped with two and is communicated with admission passage and the valve seat going out vapour passage, valve rod is shaped with and coordinates with the upper flap of control valve opening and closing and lower Disc with two valve seats; It is characterized in that:
Described valve rod is coaxially arranged by the upper valve rod with upper flap and the lower valve rod with lower Disc and forms, and is provided with the collocation structure of flap and lower Disc spacing in adjustable between upper valve rod and lower valve rod; Described collocation structure comprise be arranged on connecting head bottom upper valve rod, be arranged on lower valve rod top and for lock connecting head connecting sleeve, be positioned in connecting sleeve for the elastic component eliminating axial spacing between connecting head and connecting sleeve and the weld part that connecting sleeve and lower valve rod are fixed as one; The boss of described connecting head can vertically be positioned in the cavity that connecting sleeve and lower valve rod formed slidably.
Described elastic component comprises disc spring and is arranged on two cushion pads of the upper and lower both sides of disc spring.
Described weld part is the built-up welding between connecting sleeve bottom surface and lower valve rod outer peripheral surface.
Described connecting head to be arranged on bottom upper valve rod by a worm structure and connecting sleeve is also arranged on lower valve rod top by another worm structure.
The beneficial effects of the utility model are:
Valve rod is divided into upper valve rod and lower valve rod by the utility model, by arrange between two valve rods collocation structure on the spacing of flap and lower Disc adjust, can make two flaps and two valve seats can be simultaneously closed together, thus ensure that valve has good sealability; Therefore, the utility model has that structure is simple, convenient for production, cost is lower and the feature of good seal performance, possesses higher promotion and use value.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is the structure for amplifying schematic diagram of valve rod in Fig. 1.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 1, compensation sealing reduction valve, comprises valve body 1; Valve inner forms admission passage 11 by partition 13 and goes out vapour passage 12 (steam traffic direction as shown by arrows in FIG.), partition is shaped with and is communicated with admission passage and the valve seat (comprising upper valve base 17 and lower valve base 18) going out vapour passage; Can the valve rod 2 of axial motion vertically be positioned in valve body, valve rod is shaped with flap 21 and lower Disc 22, upper flap and lower Disc are by coordinating to come control valve opening and closing with two valve seats; Bonnet 7 and bottom flange 8 are arranged on the two ends up and down of valve body respectively; Power mechanism 9 for actuate valve stem lifting is arranged on above bonnet.
Improvements of the present utility model are:
Described valve rod is coaxially arranged by upper valve rod 23 and lower valve rod 24 and forms, with described upper flap and with described lower Disc on lower valve rod on upper valve rod; The spacing of described upper flap and lower Disc slightly larger than the spacing of upper valve base and lower valve base, and is provided with the collocation structure of flap and lower Disc spacing in adjustable between upper valve rod and lower valve rod; This collocation structure can provide certain axial surplus to change the spacing of upper flap and lower Disc, thus ensures that upper flap can close with two valve seats with lower Disc simultaneously, the sealability of raising valve.
Described collocation structure comprises: connecting head 3, connecting sleeve 4, elastic component and weld part 6.
Described connecting head is arranged on the bottom of upper valve rod by worm structure, and the bottom of this connecting head is shaped with boss 31 outstanding to the outer diameter; Described connecting sleeve is tubular, and top reducing forms through hole 41 and bottom is uncovered, and this connecting sleeve is arranged on the top of lower valve rod by another worm structure, and forms a cavity 42 between connecting sleeve inner peripheral surface and lower valve rod end face.
The top of described connecting head is up through being arranged in the screw bottom upper valve rod by worm structure again after the through hole at connecting sleeve top, simultaneously the boss of connecting head vertically can be positioned in cavity that (external diameter of described boss is greater than the aperture of through hole and is less than the internal diameter of cavity slidably, the height of boss is less than the height of cavity), therefore connecting head and connecting sleeve lock together and boss cannot slippage from connecting sleeve.
Described elastic component to be positioned in connecting sleeve and between connecting head bottom and lower valve rod, to can be used for eliminating axial spacing between connecting head and connecting sleeve; Described elastic component comprises disc spring 51 and is arranged on two cushion pads 52 of the upper and lower both sides of disc spring (disc spring can contraction deformation under a certain pressure); The top of described lower valve rod is provided with one for holding the groove 23 of elastic component.Described weld part is the built-up welding between lower valve rod outer peripheral surface and connecting sleeve bottom surface, and connecting sleeve and lower valve rod are fixed as one by this built-up welding.
The installation method of this collocation structure: elastic component is put into the groove of lower valve rod and connecting sleeve is set on connecting head from top to bottom, then (being tightened by worm structure) is tightened on upper valve rod in the top of connecting head, again the outside thread of connecting sleeve and lower valve rod is tightened, between valve rod bar outer peripheral surface and connecting sleeve bottom surface, finally carry out built-up welding rotate to prevent connecting sleeve.
The principle that realizes of this collocation structure is:
1) under the state of Open valve, lower Disc vertically can stretch along the axial direction of valve rod (flexible distance is 0.5-1mm);
2) fall valve rod, lower Disc is first closed with lower valve base;
3) continue to fall valve rod, upper valve rod will shorten the spacing of upper valve rod and lower valve rod by pressure elasticity assembly, and finally makes flap and upper valve base close.
Claims (4)
1. compensation sealing reduction valve, comprise valve body (1), to be vertically positioned in valve body and can axial motion valve rod (2), be fixed on the valve gap on valve body and the power mechanism (9) for actuate valve stem lifting; Described valve inner forms admission passage (11) by cutting off (13) and goes out vapour passage (12), partition is shaped with two and is communicated with admission passage and the valve seat going out vapour passage, valve rod is shaped with and coordinates with the upper flap (21) of control valve opening and closing and lower Disc (22) with two valve seats; It is characterized in that:
Described valve rod is coaxially arranged by the upper valve rod (23) with upper flap and the lower valve rod (24) with lower Disc and forms, and is provided with the collocation structure of flap and lower Disc spacing in adjustable between upper valve rod and lower valve rod; Described collocation structure comprise be arranged on connecting head (3) bottom upper valve rod, be arranged on lower valve rod top and for lock connecting head connecting sleeve (4), be positioned in connecting sleeve for the elastic component eliminating axial spacing between connecting head and connecting sleeve and the weld part (6) that connecting sleeve and lower valve rod are fixed as one; The boss of described connecting head can vertically be positioned in the cavity that connecting sleeve and lower valve rod formed slidably.
2. compensation sealing reduction valve according to claim 1, is characterized in that: described elastic component comprises disc spring (51) and is arranged on two cushion pads (52) of the upper and lower both sides of disc spring.
3. compensation sealing reduction valve according to claim 2, is characterized in that: described weld part is the built-up welding between connecting sleeve bottom surface and lower valve rod outer peripheral surface.
4. compensation sealing reduction valve according to claim 3, is characterized in that: described connecting head to be arranged on bottom upper valve rod by a worm structure and connecting sleeve is also arranged on lower valve rod top by another worm structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688271.6U CN204284460U (en) | 2014-11-17 | 2014-11-17 | Compensation sealing reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688271.6U CN204284460U (en) | 2014-11-17 | 2014-11-17 | Compensation sealing reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284460U true CN204284460U (en) | 2015-04-22 |
Family
ID=52867621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420688271.6U Withdrawn - After Issue CN204284460U (en) | 2014-11-17 | 2014-11-17 | Compensation sealing reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204284460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405888A (en) * | 2014-11-17 | 2015-03-11 | 杭州浙临阀门有限公司 | Compensation type sealing decompression valve |
-
2014
- 2014-11-17 CN CN201420688271.6U patent/CN204284460U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405888A (en) * | 2014-11-17 | 2015-03-11 | 杭州浙临阀门有限公司 | Compensation type sealing decompression valve |
| CN104405888B (en) * | 2014-11-17 | 2017-08-04 | 杭州浙临阀门有限公司 | Compensation sealing pressure-reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150422 Effective date of abandoning: 20170804 |