CN2731192Y - Low-pressure bypass water-spraying adjusting valve - Google Patents
Low-pressure bypass water-spraying adjusting valve Download PDFInfo
- Publication number
- CN2731192Y CN2731192Y CN 200420081868 CN200420081868U CN2731192Y CN 2731192 Y CN2731192 Y CN 2731192Y CN 200420081868 CN200420081868 CN 200420081868 CN 200420081868 U CN200420081868 U CN 200420081868U CN 2731192 Y CN2731192 Y CN 2731192Y
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- decompression
- valve base
- valve body
- 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
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Abstract
The utility model discloses a low-pressure bypass water-spraying adjusting valve, consisting of a bonnet, a valve handle, a spool, a valve base, an entrance, an egress and a valve body. The utility model is characterized in that a fluid flow buffer pool is arranged in the valve body and composed of a valve base arranged on the middle of the valve body, and a flow equalizing cover with a hole is positioned at the valve base; the spool with a flow guiding hole and a valve handle connected with top end of the spool are installed in the flow equalizing cover to form a primary choke decompression by means of a flow equalizing cover with hole and a throttling element consisting of the spool; the oblique plane of the spool matching with the valve base in barrel shape forms a second time choke decompression, the entrance and the egress are in zigzag structure of high entrance and low egress. The flow equalizing cover with hole forms the primary choke decompression, so the utility model has the effect of sounding-deadening, and the spool matching with the valve base forms the second time choke decompression to avoid occurrence of cavitation to prolong durability of the valve door. A reverse seal structure can replace filling in normal operation, and the oblique of the plane spool matches with the valve base to achieve zero leakage.
Description
Technical field
The utility model relates to a kind of low voltage bypass water jet control valve, it is the visual plant in industry heat power equipments such as electric power, oil, chemical industry or system automation field, it can be according to being transferred object issue its temperature signal, adjusts injection flow rate automatically and regulate the medium temperature parameter and be controlled within the scope of system requirements.
Background technique
When heat power equipment when starting or breaking down, or will be reduced to higher vapor (steam) temperature the temperature value that needs the time, it can be according to actuating signal or trouble signal, or be adjusted medium and issue its temperature signal, automatically open or close the low voltage bypass water jet control valve and regulate injection flow rate, make and transferred the medium temperature parameter to be controlled within the security of system scope, or be controlled within system's service condition parameter area.Low voltage bypass water jet control valve operating conditions is very poor, moves under throttle mostly, even can cavitation phenomenons take place and make the adjusting function variation, further produces leakage phenomenon, loses the effect that water spray is regulated, and makes systematic parameter can't guarantee normal operation.And existing low voltage bypass water jet control valve cavitation is big, noise big, complex structure.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming of existing low voltage bypass water jet control valve, the low voltage bypass that a kind of cavitation is little, noise is little, simple in structure water jet control valve to be provided.
The technical solution of the utility model is: a kind of low voltage bypass water jet control valve, it comprises valve gap, valve rod, spool, valve seat, import, outlet, valve body, be characterized in, described valve body is built-in with liquid stream controlling mechanism, described liquid stream controlling mechanism comprises the valve seat that is located at middle part in the valve body, be equipped with current-sharing cover with holes on the valve seat, place the spool of the band pod apertures in the current-sharing cover and the valve rod that is connected with its top, the throttling element that is made of current-sharing cover with holes and spool forms the step-down of throttling for the first time; Described spool is sealed and matched with the valve seat inclined-plane that is cylindrical shell and forms the step-down of throttling for the second time; Described import, outlet are the low Z-shaped structure of the high outlet of import.
Guide sleeve that is equipped with between between described valve gap and the valve rod and spool formation back seal suitable for reading structure.
Owing to increase foraminate current-sharing enclosure barrel structure in this valve body, fluid entered in the valve body compare evenly, and play sound deadening; The throttling element of control cooling water adopts small structure, and the throttling element cavitation amount that is in operation is greatly alleviated, and has prolonged the working life of modulating valve; Adopt valve seat cylindrical shell and spool to constitute throttle element, simplified valve mechanism; Spool cooperates with the valve seat inclined-plane that is cylindrical shell for demountable structure, and is impaired when sealing surface of seat, as long as pull down valve seat, with the valve seat reparation or change new valve seat, can use; Valve adopts the back seal structure, when leak at filler place in top, valve can be opened foot, and utilizing top back seal to close dead valve is replaceable filler;
Sealing surface of seat is designed to rational ramp structure, makes the sealing of adjusting the door sealing face reach very good effect.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
A kind of low voltage bypass water jet control valve, by shown in Figure 1, it comprises valve gap 1, valve rod 2, spool 3, valve seat 4, import 6, outlet 5, valve body 7, it is characterized in that, described valve body 7 is built-in with liquid stream controlling mechanism, described liquid stream controlling mechanism comprises the valve seat 4 that is located at middle part in the valve body 7, be equipped with current-sharing cover 8 with holes on the valve seat 4, place the spool 3 of the band pod apertures in the current-sharing cover 8 and the valve rod 2 that is connected with its top, the throttling element that is made of current-sharing cover with holes 8 and spool 3 forms the step-down of throttling for the first time; Described spool 3 cooperates formation throttling for the second time step-down with valve seat 4 inclined-planes that are cylindrical shell; Described import 6, outlet 5 are the import 6 high 5 low Z-shaped structures that export.The guide sleeve 9 and the spool 3 formation back seal structures suitable for reading that are equipped with between valve gap 1 and the valve rod 2.
Claims (2)
1, a kind of low voltage bypass water jet control valve, it comprises valve gap (1), valve rod (2), spool (3), valve seat (4), import (6), outlet (5), valve body (7), it is characterized in that, described valve body (7) is built-in with liquid stream controlling mechanism, described liquid stream controlling mechanism comprises the valve seat (4) that is located at middle part in the valve body (7), be equipped with current-sharing cover (8) with holes on the valve seat (4), place the spool (3) of the band pod apertures in the current-sharing cover (8) and the valve rod (2) that is connected with its top, the throttling element that is made of current-sharing cover (8) with holes and spool (3) forms the step-down of throttling for the first time; Described spool (3) cooperates formation throttling for the second time step-down with the valve seat that is cylindrical shell (4) inclined-plane; Described import (6), outlet (5) are the high outlet of import (6) (5) low Z-shaped structure.
2, low voltage bypass water jet control valve according to claim 1 is characterized in that, guide sleeve (9) that is equipped with between valve gap (1) and the valve rod (2) and spool (3) formation back seal suitable for reading structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081868 CN2731192Y (en) | 2004-08-16 | 2004-08-16 | Low-pressure bypass water-spraying adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081868 CN2731192Y (en) | 2004-08-16 | 2004-08-16 | Low-pressure bypass water-spraying adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731192Y true CN2731192Y (en) | 2005-10-05 |
Family
ID=35051528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420081868 Expired - Fee Related CN2731192Y (en) | 2004-08-16 | 2004-08-16 | Low-pressure bypass water-spraying adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731192Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047476A (en) * | 2011-10-15 | 2013-04-17 | 江苏神通阀门股份有限公司 | Split piston axial-flow type regulating valve |
| CN104197042A (en) * | 2014-08-29 | 2014-12-10 | 超达阀门集团股份有限公司 | Black water angle valve |
-
2004
- 2004-08-16 CN CN 200420081868 patent/CN2731192Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047476A (en) * | 2011-10-15 | 2013-04-17 | 江苏神通阀门股份有限公司 | Split piston axial-flow type regulating valve |
| CN104197042A (en) * | 2014-08-29 | 2014-12-10 | 超达阀门集团股份有限公司 | Black water angle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |