CN103174855B - Self-checking type double-valve-head regulating valve - Google Patents
Self-checking type double-valve-head regulating valve Download PDFInfo
- Publication number
- CN103174855B CN103174855B CN201310089830.1A CN201310089830A CN103174855B CN 103174855 B CN103174855 B CN 103174855B CN 201310089830 A CN201310089830 A CN 201310089830A CN 103174855 B CN103174855 B CN 103174855B
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- hole
- annular groove
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- 230000001105 regulatory effect Effects 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 206010044565 Tremor Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The invention relates to the technical field of valves, in particular to a self-checking type double-valve-head regulating valve. The self-checking type double-valve-head regulating valve comprises a vale seat, a valve head and a shell. An adjusting sleeve is arranged on the outer side of the valve head and in the shell. The valve head is arranged in the adjusting sleeve. A valve element is arranged in the valve head. A disc-shaped sealing block is arranged on a valve rod on the upper portion of the valve head. The shell is fixedly connected with the upper portion of the valve element. An annular sealing part is arranged on the outer side of the upper portion of the shell and at the position of an extending port of the valve rod. An annular groove is arranged in a sealing surface, contacting with the valve head, of the upper portion of the valve seat. A feeding hole is formed in the later side of the valve seat and is communicated with the annular groove. A through hole is formed in the bottom of the valve head. One end of the through hole is communicated with the annular groove in the valve seat. The other end of the through hole is located on the surface where the valve head contacts with the bottom of the valve element and is communicated with the annular groove in the valve head. The self-checking type double-valve-head regulating valve has the advantages of being easy to open at the beginning, labor-saving in opening, long in service life, and good in sealing effect.
Description
Technical field
The present invention relates to a kind of technical field of valve, specifically a kind of self-checking type bivalve head modulating valve.
Background technique
Modulating valve is the valve of flow, pressure and liquid level for regulating medium, is a kind of adjustable mechanical throttling arrangement, by the aperture of control valve, thus reaches the object of the adjustment of rate-of flow, pressure and liquid level.When the pressure reduction of modulating valve both sides is excessive, the ouput force that modulating valve is initially opened just needs very large, and not easily greatly, valve components is easily impaired for unlatching or consumes energy, reduces the working life of valve.In addition, after valve uses a period of time, the sealing surface wear between valve head and valve seat can cause leakage, and during repair and maintenance, equipment must be shut down, and affects user and uses, and expends the energy comparatively large, improve cost when equipment runs again.
Summary of the invention
The present invention provides a kind of initial unlatching easily, labor-saving opening, the self-checking type bivalve head modulating valve of long service life to overcome above-mentioned defect.
The technical solution used in the present invention is: a kind of self-checking type bivalve head modulating valve, comprise valve seat, valve head and housing, housing is arranged on valve seat top, valve head is arranged on above valve seat, the inside of housing, and the valve rod on valve head top stretches out housing, and valve rod top is connected with transmission device, in housing, the arranged outside adjustment sleeve of valve head, adjustment sleeve is tubular shape, adjustment sleeve is vertically arranged the through hole of bar shaped; Valve head is arranged in adjustment sleeve, valve head cylindrical is corresponding to adjustment sleeve endoporus, valve head is columniform cavity, chamber wall vertically arranges long strip through hole, and valve head base plate has circular through flow hole, and valve head interior arranges spool, valve rod is fixedly connected on spool top, be distributed with tooth along spool circumference, the relevant position of valve head inwall is distributed with the groove mated with tooth, and the tooth on spool stretches in the groove of valve head; The valve rod on valve head top arranges disc-shaped seal block, when spool is positioned at valve head inner top, sealing block is close proximity to cover top plate bottom, the upper outside of housing, valve rod extending port place are provided with lip ring, it is characterized in that: on the top of valve seat, the sealing surface that contacts with valve head, be provided with annular groove, have material hole at valve seat sidepiece, the end of this material hole is provided with plug, and the other end of material hole is connected with annular groove; Valve head inside bottom, with the sealing surface of spool on be also provided with annular groove, the bottom of valve head is provided with through hole, this through hole one end is positioned on the sealing surface that valve head contacts with valve seat, and communicate with the annular groove on valve seat, the other end communicates with the annular groove on valve head and valve core sealed cover.
Because the present invention is provided with spool at valve head interior, form the structure of secondary valve head, transmission device first drives valve by valve rod
coremove in valve head, valve head is driven to move up and down by spool again, because spool area is little, its compression face is less, only needs less ouput force just can open spool, when spool moves to the top of valve head, circulation medium and fluid make valve head pressure reduction reduce to drive valve head to move again, starting force is little, rapid operation, and valve opening is easy, outside valve head, design is with the adjustment sleeve of through hole and arranges through hole on the wall of valve head chamber, all can regulating valve open after the flow of fluid, when realizing initially opening, flow is little, flow along with spool and valve head progressively unlatching and increase gradually, avoid flow when conventional valves is initially opened excessive, valve internal component are caused to be subject to undermine the phenomenon of flow shakiness, thus improve the working life of valve, the present invention have also been devised: on the top of valve seat, the sealing surface contacted with valve head is provided with annular groove, material hole is had at valve seat sidepiece, the end of this material hole is provided with plug, the other end of material hole is connected with annular groove, valve head inside bottom, with the sealing surface of spool on be also provided with annular groove, the bottom of valve head is provided with through hole, this through hole one end is positioned on the sealing surface that valve head contacts with valve seat, and communicate with the annular groove on valve seat, the other end communicates with the annular groove on valve head and valve core sealed cover.
In the present invention, arrange the replace block of annular in the annular groove inside of valve seat, replace block size is corresponding to annular groove size, also arranges annular groove on the top of replace block, and this annular groove bottom is provided with through hole, and this through hole is connected with the material hole on valve seat.
Because the present invention devises annular groove on the sealing surface on valve seat top, the sidepiece of valve seat is provided with material hole be communicated with groove, when valve leak, to inject in abrasive to annular groove by material hole and arrive sealing surface place, rotate valve head to grind, just can repair sealing surface, when leaking after throttle down, sealer can be injected by material hole and carrying out leak stopping; The bottom of valve head is provided with through hole, and through hole communicates with the annular groove on valve seat, and such abrasive or sealer also can realize the injecting glue leak stopping to the two between also can entering bottom valve head and spool; The present invention arranges the annular groove part that replace block conveniently can replace serious wear in the annular groove of valve seat, without the need to changing whole valve seat, saves material; The sealing block of the present invention on valve rod, at valve rod extending port arranged outside Sealing, effectively improves the sealing effect between valve rod and housing.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the schematic diagram of the embodiment of the present invention 2.
Embodiment
Now the invention will be further described by reference to the accompanying drawings, Fig. 1 is embodiments of the invention 1, comprises valve seat 1, valve head 2 and housing 3, and housing 3 is arranged on valve seat 1 top, valve head 2 is arranged on above valve seat 1, the inside of housing 3, the valve rod 4 on valve head 2 top stretches out housing 3, and valve rod 4 top is connected with transmission device, in housing 3, the arranged outside adjustment sleeve 5 of valve head 2, adjustment sleeve 5 is tubular shape, adjustment sleeve 5 is vertically arranged the through hole of bar shaped, and adjustment sleeve 5 height is consistent with shell cavity heights.Valve head 2 is arranged in adjustment sleeve 5, and valve head 2 cylindrical is corresponding to adjustment sleeve 5 endoporus, and valve head 2 can move up and down formation piston cylinder operator along adjustment sleeve 5 inwall.Valve head 2 is columniform cavity, chamber wall vertically arranges long strip through hole, valve head 2 base plate has circular through flow hole 13, valve head 2 inside arranges spool 6, and valve rod 4 is fixedly connected on spool 6 top, has tooth along spool 6 circle distribution, the relevant position of valve head 2 inwall is distributed with the groove mated with tooth, tooth on spool 6 stretches in the groove of valve head 2, and spool 6 can move up and down along valve head 2 inwall, also forms piston cylinder operator.The valve rod 4 on valve head 2 top arranges disc-shaped seal block 7, and when valve disc is positioned at valve head 2 inner top, sealing block 7 is close proximity to housing 3 top board bottom, and the upper outside of housing 3, valve rod 4 extending port place are provided with lip ring 8.Sealing 8 in the present embodiment is sealed packing, and its upper surface of sealing block 7 on valve rod 4 is circular arc, is provided with the arc-shaped concave corresponding to sealing block 7 upper surface inside the top of housing 3, valve rod 4 extending port place.
Be arranged between equipment penstock and waste pipe for modulating valve of the present invention and working procedure is described.When needing Open valve, movable valve plug 6 is first with to move up by transmission device by valve rod 4, the long strip through hole of water in penstock on valve head wall and the through flow hole 13 bottom valve head 2 flow to waste pipe, now because spool 6 area is less, spool 6 compression area is little, and promote easily, required starting force is little, open easily, and suitably alleviate the pressure in penstock.When spool 6 moves to valve head 2 top, drive valve head 2 to move up together by spool 6, the bar hole of the water in penstock on adjustment sleeve 5 flows to waste pipe.When valve head 2 is just opened, flow is less, along with the flow that moves up of valve head 2 increases gradually, avoids flow when conventional valves is initially opened excessive, causes valve internal component to be subject to undermine the phenomenon regulating shakiness, thus improves the working life of valve.When valve is opened completely, sealing block 7 on valve rod 4 is close proximity to housing 3 top, usual valve in use for some time, due to wearing and tearing when valve rod 4 moves up and down and between housing 3, the opening that stretches out of housing 3 upper valve rod 4 easily leaks, utilize sealing block 7 pairs of upper opening portions to seal, utilize sealing block 7 pairs of bottoms to seal, effectively improve sealing effect.
Fig. 2 is embodiments of the invention 2, except comprising technological schemes whole in embodiment 1, also comprise following technological scheme: on the top of valve seat 1, the sealing surface that contacts with valve head 2, be provided with annular groove, material hole 10 is had at valve seat 1 sidepiece, the end of this material hole 10 is provided with plug, and the other end of material hole 10 is connected with annular groove, arranges plug and can prevent dielectric leakage, when needs inject abrasive or sealer in material hole 10, then plug is pulled down.Valve head 2 inside bottom, with the sealing surface of spool 6 on be also provided with annular groove, namely an annular groove is set on valve seat 1, in valve head 2, is also provided with an annular groove.The bottom of valve head 2 is provided with through hole, and this through hole one end is positioned on the sealing surface that valve head 2 contacts with valve seat 1, and communicates with the annular groove on valve seat 1, and the other end communicates with the annular groove on valve head 2 and spool 6 sealing surface.
In the present embodiment
,the replace block 11 of annular is set in the annular groove inside of valve seat 1, replace block 11 size is corresponding to annular groove size, also arrange annular groove on the top of replace block 11, this annular groove bottom is provided with through hole, and this through hole is connected with the material hole 10 on valve seat 1.In the present embodiment, the bottom of spool 6 is provided with annular lug, annular boss is set on the base plate of valve head 2, along through flow hole 13 top, annular groove on described valve head 2 is arranged on boss, and when spool 6 is closed, described projection and the surface of contact of boss are sealing surface.Design projection and boss, in order to reduce sealing surface area, make spool 6 flexible movements, easily open and close.In the bottom of valve head 2 base plate, the arranged outside flow-guiding screen 12 of through flow hole 13, flow-guiding screen 12 is cylindrical, and on the tube wall of flow-guiding screen 12, distribution is provided with through hole, and flow-guiding screen 12 can reduce restriction loss, reduces noise.
The working procedure that embodiment 2 is described between equipment penstock and waste pipe is arranged on for modulating valve of the present invention.When valve opening, in the same manner as in Example 1, movable valve plug 6 is first with to move up by transmission device by valve rod 4, the long strip through hole of water in penstock on valve head 2 wall and the through flow hole 13 bottom valve head 2 flow to waste pipe, now spool 6 area is less, and promote easily, required starting force is little, open easily, and suitably alleviate the pressure in penstock.When spool 6 moves to valve head 2 top, valve head 2 is driven to move up together by spool 6, the bar hole of water in penstock on adjustment sleeve 5 flows to waste pipe, when valve head 2 is just opened, flow is less, along with the flow that moves up of valve head 2 increases gradually, when avoiding conventional valves initially to open, flow is excessive, causes valve internal component to be subject to undermine the phenomenon of flow shakiness, thus improves the working life of valve.When valve is opened completely, sealing effect is improved at the extending port place that the sealing block 7 on valve rod 4 is close proximity to housing 3 top valve stem 4.When valve needs to close, transmission device drives valve head 2 to move down by valve rod 4 and spool 6, and when valve head 2 is down to bottom, valve head 2 no longer moves down, and spool 6 continues descending, directly causes spool 6 and tightly contacts with valve seat 1 with valve head 2, valve closing.
After usual modulating valve uses a period of time, valve head 2 can be impaired because of various reasons with the sealing surface of valve seat 1, there is contact imprecision and form leakage, at this moment, by injecting abrasive in the material hole 10 on valve seat 1, abrasive is arrived and is full of the annular groove on valve seat 1 top, then rotate valve head 2, the sealing surface of valve head 2 and valve seat 1 and surface of contact are ground, can keep in repair the minor leakage of valve like this, and without the need to replacing whole valve, reduce costs.If when equipment runs, occur after throttle down leaking, can by injecting sealer in material hole 10, sealer is arrived and is full of the annular groove on valve seat 1 top, like this by using sealer valve head 2 and valve seat 1 to be sealed, stop a leak, the equipment that do not affect runs.
When equipment is stopped transport, can carry out leak detection with no pressure, be fallen by valve head 2 and make valve closing, use is suppressed equipment and press water is injected material hole 10, whether press water enters in the annular groove on valve seat 1 top through material hole 10, leak to detect between valve seat 1 and valve head 2; Owing to being provided with the through hole be connected with the annular groove on valve seat 1 bottom valve head 2, whether press water can arrive valve head 2 and the sealing surface place of spool 6 through this through hole, leak to detect between valve head 2 and spool 6.Traditional leak detection must allow equipment run, and making to be full of pressure in pipeline could detect, and wastes energy and material.
Transmission device in the present invention, can be arrange handwheel on valve rod 4 top, manually carry out transmission, also can be arrange electric transmissio mechanism on valve rod 4 top, as electric pushrod etc., to move up and down and the rotary motion of several angle just can as long as realize valve rod 4.In the present invention, tooth on spool 6 stretches in the groove on valve head 2 wall and forms spline joint, space can be provided with by between described tooth and groove, like this by that is slight clockwise direction of clockwise and anticlockwise movable valve plug 6 and counterclockwise alternate rotation spool 6, can realize grinding the sealing surface between spool 6 and valve head 2, safeguard.In the present invention, when differential pressure as excessive in valve head 2 is large, can inside and outside sheathed plural valve head 2.
The present invention has initial unlatching easily, labor-saving opening, long service life, the feature of good sealing effect.
Claims (2)
1. a self-checking type bivalve head modulating valve, comprise valve seat, valve head and housing, housing is arranged on valve seat top, valve head is arranged on above valve seat, the inside of housing, and the valve rod on valve head top stretches out housing, and valve rod top is connected with transmission device, in housing, the arranged outside adjustment sleeve of valve head, adjustment sleeve is tubular shape, adjustment sleeve is vertically arranged the through hole of bar shaped; Valve head is arranged in adjustment sleeve, valve head cylindrical is corresponding to adjustment sleeve endoporus, valve head is columniform cavity, chamber wall vertically arranges long strip through hole, and valve head base plate has circular through flow hole, and valve head interior arranges spool, valve rod is fixedly connected on spool top, be distributed with tooth along spool circumference, the relevant position of valve head inwall is distributed with the groove mated with tooth, and the tooth on spool stretches in the groove of valve head; The valve rod on valve head top arranges disc-shaped seal block, when spool is positioned at valve head inner top, sealing block is close proximity to cover top plate bottom, the upper outside of housing, valve rod extending port place are provided with lip ring, it is characterized in that: on the top of valve seat, the sealing surface that contacts with valve head, be provided with annular groove, have material hole at valve seat sidepiece, the end of this material hole is provided with plug, and the other end of material hole is connected with annular groove; Valve head inside bottom, with the sealing surface of spool on be also provided with annular groove, the bottom of valve head is provided with through hole, this through hole one end is positioned on the sealing surface that valve head contacts with valve seat, and communicate with the annular groove on valve seat, the other end communicates with the annular groove on valve head and valve core sealed cover.
2. self-checking type bivalve head modulating valve according to claim 1, it is characterized in that: the replace block that annular is set in the annular groove inside of valve seat, replace block size is corresponding to annular groove size, on the top of replace block, also annular groove is set, this annular groove bottom is provided with through hole, and this through hole is connected with the material hole on valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089830.1A CN103174855B (en) | 2013-03-20 | 2013-03-20 | Self-checking type double-valve-head regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089830.1A CN103174855B (en) | 2013-03-20 | 2013-03-20 | Self-checking type double-valve-head regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103174855A CN103174855A (en) | 2013-06-26 |
| CN103174855B true CN103174855B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310089830.1A Expired - Fee Related CN103174855B (en) | 2013-03-20 | 2013-03-20 | Self-checking type double-valve-head regulating valve |
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| Country | Link |
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| CN (1) | CN103174855B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836203A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Valve with double valve heads capable of being sealed |
| CN105782550B (en) * | 2014-12-25 | 2019-02-22 | 浙江三花汽车零部件有限公司 | A kind of two logical piston valves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090026395A1 (en) * | 2007-07-25 | 2009-01-29 | Aaron Andrew Perrault | Apparatus to increase fluid flow in a valve |
| CN201916557U (en) * | 2010-12-31 | 2011-08-03 | 无锡华益电力阀门有限公司 | Double-valve-core high-differential-pressure regulating valve |
| CN102278504A (en) * | 2011-06-27 | 2011-12-14 | 上海阀门厂有限公司 | Atmosphere discharge valve |
| CN202451846U (en) * | 2011-12-20 | 2012-09-26 | 季克寅 | Double valve clack large-diameter stop valve |
| CN203146954U (en) * | 2013-03-20 | 2013-08-21 | 潘健 | Self-inspection type double-valve-head regulation valve |
-
2013
- 2013-03-20 CN CN201310089830.1A patent/CN103174855B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090026395A1 (en) * | 2007-07-25 | 2009-01-29 | Aaron Andrew Perrault | Apparatus to increase fluid flow in a valve |
| CN201916557U (en) * | 2010-12-31 | 2011-08-03 | 无锡华益电力阀门有限公司 | Double-valve-core high-differential-pressure regulating valve |
| CN102278504A (en) * | 2011-06-27 | 2011-12-14 | 上海阀门厂有限公司 | Atmosphere discharge valve |
| CN202451846U (en) * | 2011-12-20 | 2012-09-26 | 季克寅 | Double valve clack large-diameter stop valve |
| CN203146954U (en) * | 2013-03-20 | 2013-08-21 | 潘健 | Self-inspection type double-valve-head regulation valve |
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| Publication number | Publication date |
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| CN103174855A (en) | 2013-06-26 |
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Granted publication date: 20150408 |