CN202867872U - Small-flow high-pressure regulating valve - Google Patents
Small-flow high-pressure regulating valve Download PDFInfo
- Publication number
- CN202867872U CN202867872U CN 201220622597 CN201220622597U CN202867872U CN 202867872 U CN202867872 U CN 202867872U CN 201220622597 CN201220622597 CN 201220622597 CN 201220622597 U CN201220622597 U CN 201220622597U CN 202867872 U CN202867872 U CN 202867872U
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- Prior art keywords
- valve
- spool
- valve seat
- seat
- flow high
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- Expired - Fee Related
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Abstract
The utility model discloses a small-flow high-pressure regulating valve which comprises a valve body, a valve cover, a valve seat, a valve core and a valve rod, wherein the valve seat is tightly pressed and fixed in a valve cavity of the valve body through the valve cover, a slender closure hole is formed in the valve seat, a slender core head which corresponds to the slender closure hole is arranged on the valve core, the valve core is connected with the valve rod, and the valve rod extends out of the valve body. The small-flow high-pressure regulating valve is characterized in that the lower portion of the valve core is made from alloy materials, wherein the lower portion of the valve is provided with the slender core head and fixedly connected with the upper portion of the valve core. The central portion of the valve seat where a slender closure hole is formed is made from the hard alloy materials, and the central portion is fixedly connected with other portions of the valve seat. The small-flow high-pressure regulating valve has the advantages of being good in abrasive resistance, capable of suffering high temperature and keeping good performance when high differential pressure medium flows by, long in service life and low in production cost at the same time.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of small flow high pressure modulating valve.
Background technique
Small flow high pressure modulating valve great majority all are to utilize to change the flow that the spool shape is removed regulating valve, when running into pressure medium high-temperature height and flow when very little, just need to very littlely just can reach required tiny flow quantity to what spool was done, spool is done, and very little its intensity just reduces greatly, be easy to fracture in the high occasion of the large flow velocity of pressure reduction, be easy to like this bring serious consequence.When medium when entrance is entered below valve, the place of damming of the very fast arrival spool of medium valve seat, when spool is slowly upwards mentioned, medium flows through by spool valve seat gap, the flow velocity of medium is very fast and pressure is very low between this moment spool valve seat, being easy to produce cavitation erosion damages spool, velocity of medium is also very serious to the very serious wearing and tearing of washing away of sealing surface of seat soon, thus, the small flow high pressure modulating valve of prior art, wear resistance is relatively poor, and in the out-of-date performance that can not keep for a long time excellence of High Pressure Difference MEDIA FLOW, working life is short.
Summary of the invention
Problem in view of present known technology existence, the technical problems to be solved in the utility model is to be to provide a kind of wear resistance good, can bearing temperature high, in the out-of-date performance that still can keep for a long time excellence of High Pressure Difference MEDIA FLOW, long service life, the simultaneously low small flow high pressure modulating valve of cost of production.
The utility model is implemented by the following technical programs:
The small flow high pressure modulating valve, comprise valve body, valve gap, valve seat, spool and valve rod, valve seat is pressed abd fixed in the valve pocket of valve body by valve gap, valve seat is provided with elongated cutoff hole, spool is provided with the elongated core print corresponding with elongated cutoff hole, spool is connected with valve rod, the protruding valve body of valve rod, it is characterized in that: spool arranges the bottom of elongated core print and adopts Hardmetal materials, the spool bottom is fixedly connected with spool top, valve seat arranges the center portion of elongated cutoff hole and adopts Hardmetal materials, and other position of this center portion and valve seat is fixedly connected with.
In technique scheme, we adopt the method for a kind of spool and valve seat part carbide inserts to reduce destruction that the High Pressure Difference medium causes spool and to the wearing and tearing of sealing surface of seat, thereby just can fundamentally solve problem, make the utility model wear resistance good, can bearing temperature high, in the out-of-date performance that still can keep for a long time excellence of High Pressure Difference MEDIA FLOW, long service life is simultaneously because only have the part of spool and valve seat to adopt Hardmetal materials, so cost of production is low.
As preferably, the spool bottom is welded and fixed with spool top after being installed in spool top by the location spindle nose, and the valve seat center portion is welded and fixed with other position of valve seat after directly being installed in the central inner hole of valve seat.
As preferably, by packing box seal, be provided with self-sealing packing in the stuffing box and compressed by Gland between valve rod and the valve body, the Gland screw thread is screwed on the valve body.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model.
Embodiment
Describe details and the working principle of the utility model specific embodiment in detail below in conjunction with accompanying drawing:
As shown in the figure, small flow high pressure modulating valve of the present utility model, comprise valve body 12, valve gap 1, valve seat 4, spool (being formed by spool top 8 and spool bottom 6) and valve rod 9, valve seat 4 is pressed abd fixed in the valve pocket of valve body 12 by valve gap 1, described valve seat 4 is provided with elongated cutoff hole 2, valve seat 4 arranges the center portion 3 of elongated cutoff hole and adopts Hardmetal materials, this center portion 3 is welded and fixed with other position of valve seat after directly being installed in the central inner hole of valve seat 4, described spool is provided with the elongated core print 5 corresponding with elongated cutoff hole 2, Hardmetal materials is adopted in the spool bottom 6 that elongated core print 5 is set, spool bottom 6 is installed in spool top 8 afterwards by location spindle nose 7 and spool top 8 is welded and fixed, spool is connected with valve rod 9, valve rod 9 protruding valve bodies 12, pass through packing box seal between valve rod 9 and the valve body 12, be provided with self-sealing packing 11 in the stuffing box and compressed by Gland 10, Gland 10 screw threads are screwed on the valve body 12.
Small flow high pressure modulating valve of the present utility model, when medium when entrance is entered below valve, the place of damming of the very fast arrival spool of medium valve seat, when spool is slowly upwards mentioned, medium flows through by spool valve seat gap, the flow velocity of medium is very fast and pressure is very low between this moment spool valve seat, be easy to produce cavitation erosion, but because spool and valve seat part insert special cemented carbide, special Cemented Carbide Hardness is high, and wear resistance is good, and bearing temperature is high, still can keep excellent performance in that the High Pressure Difference MEDIA FLOW is out-of-date, thus just fundamentally avoided cavitation erosion that spool is damaged and velocity of medium soon to the quick-wearing of crossing of sealing surface of seat.
Claims (3)
1. small flow high pressure modulating valve, comprise valve body, valve gap, valve seat, spool and valve rod, valve seat is pressed abd fixed in the valve pocket of valve body by valve gap, valve seat is provided with elongated cutoff hole, spool is provided with the elongated core print corresponding with elongated cutoff hole, spool is connected with valve rod, the protruding valve body of valve rod, it is characterized in that: spool arranges the bottom of elongated core print and adopts Hardmetal materials, the spool bottom is fixedly connected with spool top, valve seat arranges the center portion of elongated cutoff hole and adopts Hardmetal materials, and other position of this center portion and valve seat is fixedly connected with.
2. small flow high pressure modulating valve as claimed in claim 1, it is characterized in that: the spool bottom is welded and fixed with spool top after being installed in spool top by the location spindle nose, and the valve seat center portion is welded and fixed with other position of valve seat after directly being installed in the central inner hole of valve seat.
3. small flow high pressure modulating valve as claimed in claim 1 is characterized in that: by packing box seal, be provided with self-sealing packing in the stuffing box and compressed by Gland between valve rod and the valve body, the Gland screw thread is screwed on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622597 CN202867872U (en) | 2012-11-22 | 2012-11-22 | Small-flow high-pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622597 CN202867872U (en) | 2012-11-22 | 2012-11-22 | Small-flow high-pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867872U true CN202867872U (en) | 2013-04-10 |
Family
ID=48034594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622597 Expired - Fee Related CN202867872U (en) | 2012-11-22 | 2012-11-22 | Small-flow high-pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315220A (en) * | 2014-08-26 | 2015-01-28 | 北京精密机电控制设备研究所 | Transmission mechanism with multi-turn electric actuator for driving screw rod type high voltage regulating valve |
| CN107387785A (en) * | 2017-09-17 | 2017-11-24 | 浙江贝尔控制阀门有限公司 | A kind of micro-flow regulating valve |
-
2012
- 2012-11-22 CN CN 201220622597 patent/CN202867872U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315220A (en) * | 2014-08-26 | 2015-01-28 | 北京精密机电控制设备研究所 | Transmission mechanism with multi-turn electric actuator for driving screw rod type high voltage regulating valve |
| CN104315220B (en) * | 2014-08-26 | 2017-02-01 | 北京精密机电控制设备研究所 | Transmission mechanism with multi-turn electric actuator for driving screw rod type high voltage regulating valve |
| CN107387785A (en) * | 2017-09-17 | 2017-11-24 | 浙江贝尔控制阀门有限公司 | A kind of micro-flow regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131122 |