CN203404419U - Change valve - Google Patents
Change valve Download PDFInfo
- Publication number
- CN203404419U CN203404419U CN201320466619.2U CN201320466619U CN203404419U CN 203404419 U CN203404419 U CN 203404419U CN 201320466619 U CN201320466619 U CN 201320466619U CN 203404419 U CN203404419 U CN 203404419U
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- China
- Prior art keywords
- valve
- spool
- valve rod
- selector
- rod
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- 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 - Lifetime
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Abstract
The utility model discloses a change valve. A movable stop dog is fixed to or arranged in an integrated mode on a valve rod of the change valve, the movable stop dog and a valve core are arranged at intervals, a fixed stop dog is fixed to or arranged in an integrated mode on the cavity wall of a valve cavity and used for stopping the valve core from moving in the direction of continuing to compress a valve base after the valve core is compressed to the valve base in a sealed mode and moves in place, and the fixed stop dog and the movable stop dog are distributed oppositely in the moving direction of the valve base. When the change valve is used, after the valve core moves in place, the fixed stop dog can be matched with the movable stop dog in a stopping mode in the moving direction of the valve rod to stop the valve rod from pushing and pulling the valve core to continue to move in the direction of compressing the valve base, and namely the trend that the valve core moves in the direction of continuing to compressing the valve base is avoided, so that the valve core is compressed to the valve base in a sealed mode according to set pressure, seal compressed match between the valve core and the valve base is achieved, damage, caused by excessive compressing of the valve core, to the valve base is reduced, and use reliability and service life of the whole change valve are ensured.
Description
Technical field
The utility model relates to a kind of selector valve.
Background technique
At present, commercially available selector valve mostly is hydraulicdirectional control valve or flow selector valve less than normal, the as a whole formula module of the control section of its selector valve and do-part, when carrying out regular maintenance or operational failure occur, selector valve is difficult to take apart and carries out relevant upkeep operation, thereby extended the repair cycle of selector valve, the cost of overhaul improves, and even need integral body to change at selector valve breaking down need to repair time, the using scope that is selector valve is limited, be difficult to be used in water, in the fluid-duct-system of the large flow such as rock gas, cause the manufacturing efficiency of fluid-duct-system to reduce, economic loss increases.
Application number is that 201120487641 Chinese utility model patent discloses a kind of three-way diverter valve, in comprising, establishes by this selector valve the main valve body of T shape main valve chamber, be symmetrically distributed in two auxiliary valve bodies of the main valve body left and right sides, in two auxiliary valve bodies, be respectively equipped with the secondary valve pocket being communicated with main valve chamber, and leading, the joint place of secondary valve pocket is provided with the left and right valve seat of two annular table scalariforms of distribution in opposite directions, between two valve seats, be equipped with and the spool that gets out of the way another valve seat when one of them valve base sealing coordinates, on spool, be fixed with the valve rod that push-and-pull spool switches between two valve seats, valve rod exposes outside from right auxiliary valve body, in exposed portions serve, be equipped with the power plant that push-and-pull valve rod moves left and right, in use, by power plant, to valve rod, provide power and push-and-pull spool switches action between two valve seats, to reach the connection of switching between two secondary valve pockets and main valve chamber or the object of off state.But because of spool, with scheme, the movement travel on left and right directions is that stroke by power plant output terminal decides, so power plant are in assembly error or use while making the stroke of its output terminal occur deviation under the impact of fortuitous event, spool also has to the trend of the direction motion that continues to compress after compressing with valve base sealing, this movement tendency can force spool to be excessively pressed on valve seat, and the corresponding sealing configuration on spool and/or valve seat is damaged, and even destroy, thereby the operational safety of whole selector valve and working life are declined.
Model utility content
The purpose of this utility model is to provide a kind of selector valve, is intended to by the movement travel of restriction valve rod, and avoids coordinating back valve core to continue to the problem of compaction direction motion at spool and valve base sealing.
In order to realize above object, the technological scheme of selector valve of the present utility model is as follows:
A kind of selector valve, in comprising, establish the valve body of valve pocket, in described valve pocket, be provided with two valve seats that relative spacing distributes, between two valve seats, be equipped with for getting out of the way another spool when sealing in one of them that is pressed on two valve seats, on described spool, be fixed with the valve rod moving for push-and-pull valve rod under driving at manual or power plant between two valve seats, on described valve rod, fix or be wholely set and the spaced active block stop of spool, fixing or be wholely set to be useful at seal spool and be pressed on valve seat and after motion puts in place on the chamber wall of described valve pocket, the fixed stop that stops spool to move to the direction that continues compression valve seat, described fixed stop is distribute relative with active block stop on the movement direction of valve rod.
Described valve rod has the extension that passes valve body, described active block stop on described extension, described fixed stop position corresponding with active block stop outside valve body.
On described valve body, fix or be wholely set the guide rail coordinating with active block stop guiding on valve rod movement direction, described guide rail is provided with the indicating arrangement for mark active block stop present position on valve rod movement direction.
It is switching stroke distances through distance that described spool completes single switching institute between two valve seats, and described switching stroke distances is the twice of the distance size between valve rod movement direction upper valve core opposite end surface.
Described valve rod is assemblied in the perforation of offering on valve body along movement direction guiding, between the hole wall of described perforation and the outer circumferential face of spool, is provided with filler group.
Described filler group comprises the teflin ring that is folded in the V-type between valve rod outer circumferential face and the wall surface of the hole of perforation.
Described valve rod has the guide section that extends to the phase dorsal part of two valve seats along movement direction, and on the wall of the chamber of valve pocket, fix or be wholely set the guide sleeve coordinating with described guide section guiding movement on valve rod movement direction, between the chamber wall of described guide sleeve and valve pocket, there is the space of passing for fluid.
In described valve body comprises, establish main valve chamber main valve body and in establish two auxiliary valve bodies of secondary valve pocket, two auxiliary valve bodies are distributed in the relative both sides of main valve body relatively, main valve body is connected removable being connected by flange respectively with two auxiliary valve bodies, between main valve body and each auxiliary valve body, between two relative flanges, is being folded with respectively seal ring.
In described valve seat, be provided with the endoporus of the taper hole shape broadening gradually to the direction opening near spool.
The utility model manually or on the valve rod of power plant driving is being fixed or is being wholely set and the spaced active block stop of spool, on valve body, be provided with the fixed stop relatively distributing in active block stop on spool switching direction, in use, after spool moves into place, fixed stop meeting and active block stop block on valve rod movement direction coordinates, to stop valve rod push-and-pull spool to continue to move to the direction that compresses valve seat, avoid spool to the trend that continues the direction motion of compression valve seat, spool is pressed on valve seat according to the wiper seal of setting, realize the sealing pressing drive fit between spool and valve seat, the damage that reduces the excessive compression of spool on valve seat and bring, guarantee operational safety and the working life of whole selector valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of selector valve in embodiment of the present utility model.
Embodiment
The embodiment of selector valve of the present utility model: as shown in Figure 1, this selector valve is that cast steel is made, and be applicable to caliber between DN40-DN300, need with pressure below PN1.6Mpa, the combustion gas selector valve of Applicable temperature between-25 ℃-100 ℃, it comprises the main valve body 1 in middle part, symmetrical flange is connected to the auxiliary valve body of main valve body 1 left and right sides, be assemblied in the spool in main valve body 1, the valve rod 16 that spool upper driving connects, the power plant that valve rod 16 upper drivings connect, wherein two auxiliary valve bodies are divided into a left side according to left and right distributing position, right auxiliary valve body 5, 11, the left end of valve rod 16 is fixed on spool 4, right-hand member passes and is in transmission connection with power plant from right auxiliary valve body 11 right sides, in the periphery of valve rod 16 right-hand member exposed portions serve, is provided with position-limited rack, and position-limited rack comprises the left side of left and right coaxial package in valve rod 16 peripheries, right limit flange 22, 15, left limit flange 22 one are connected on right auxiliary valve body 11 right flanks, and right limit flange 15 is connected in the right side of left limit flange 22 relatively by about two connecting studs 17 that extend, and the two ends, left and right of connecting stud 17 are for being connected in a left side, right limit flange 22, the screw threads for fastening section of the necking down shape on 15, the middle part of connecting stud 17 is that block is folded in a left side, right limit flange 22, support shell of column between 15, so that left, right limit flange 22, between 15, be folded with the spacing space that extend left and right.The pin of establishing plug-in mounting in the right-hand member exposed portions serve of valve rod 16 by radially revolving along position-limited lever is fixed with the active block stop 13 in spacing space, and on the left side of right limit flange 15 by the removable fixed stop 14 being fixed with in active block stop 13 right sides of connecting stud 17, fixed stop 14 and active block stop 13 distribute left and right directions is relative.
Between the endoporus of left limit flange 22 and right secondary valve pocket, bridge joint is communicated with the perforation that extend the left and right that is guided through for valve rod 16, this perforation is step hole left small and right large, in the macropore sector hole wall of step hole and the periphery of valve rod 16, be folded with filler group 23, this filler group 23 is coaxially arranged side by side and forms by the teflin ring of several V-types, on the right side of filler group 23, be provided with coaxial sleeve and be located at the filler pressing sleeve 21 in valve rod 16 peripheries, the right-hand member of filler pressing sleeve 21 is pressed abd fixed on filler group 23 on the step surface on perforation hole wall, the right-hand member of filler pressing sleeve 21 exposes from the right output port of perforation, the edge of exposed portions serve is provided with to the gland flange of filler pressing sleeve 21 outer turnovers, in the periphery of gland flange, be equipped with block at the filler briquetting 20 on filler pressing sleeve 21 right sides, filler briquetting 20 by being upwards connected on left limit flange 22 with connecting stud 17 clamping bolt 12 uniformly at intervals at left limit flange for 22 weeks, and this filler briquetting 20 is distribution relative to active block stop 13 on left and right directions.
One side of active block stop 13 is provided with the guiding groove coordinating with the supporting section left and right guiding movement of connecting stud 17, so that the appropriate section on the supporting section of connecting stud 17 is the guide section coordinating with active block stop left and right guiding, and on the supporting section of connecting stud 17, being provided with the mark structure that stroke is corresponding that moves left and right with active block stop 13, this mark structure is the indentation that is engraved on supporting section side face one side of connecting stud 17.
Left and right auxiliary valve body 5,11 is fastened on main valve body 1 by flange respectively, and is respectively equipped with seven O RunddichtringOs 2 that are folded between two adpting flanges in two pairs of flanges of docking mutually.The crossover position place of main valve chamber and secondary valve pocket is provided with the valve seat of the annular table scalariform from exposing in the respective side valve port of main valve chamber, this valve seat is wholely set on the wall of the chamber of secondary valve pocket, the endoporus of valve seat is gradually by the wealthy taper hole of narrow change towards main valve chamber, the opposing end surface of two valve seats is at left and right directions and spool 4 limit blocks, distance between the opposing end surface of two valve seats is the switching stroke distances that spool 4 is realized unidirectional switching institute warp between left and right secondary valve pocket, and switching stroke distances is the twice of the distance size between its two pairs of both ends of the surface on spool 4 switching directions.
Spool 4 comprises the core body of the drum type that the thin two ends of belly are thick, the right-hand member center portion of core body offers the installing blind for the coaxial plug-in mounting of left end of valve rod 16, on the outer rim position of the left and right end face of core body, be fixed with respectively nitrile rubber seal ring 3, each nitrile rubber seal ring 3 is relative distribution of large end end face of left and right directions and valve seat.
The left end of valve rod 16 is coaxially inserted in the installing blind on spool 4, in the periphery of insertion portion, offer annular caulking groove, in annular caulking groove, be embedded with the valve rod being coaxially inserted in installing blind nested 8, on the right side of valve rod nested 8, be equipped with in the periphery that coaxial sleeve is located at valve rod 16, coaxial threaded is connected to the gland nut 9 on the wall surface of the hole of installing blind, the left end of gland nut 9 stretches in installing blind and valve rod nested 8 is pressed on the cecum end face of installing blind, the right-hand member of gland nut 9 exposes from the right-hand member of installing blind, and on the edge of exposed portions serve, be provided with the block coordinating along block with the hole of installing blind and turn edge.The middle part of valve rod 16 is for penetrating from left to right the guide section in right secondary valve pocket, in the periphery of guide section, coaxial sleeve is equipped with the guide sleeve 10 that left and right guiding coordinates, between the chamber wall of the periphery of guide sleeve 10 and right secondary valve pocket, bridge joint is fixed with fixedly muscle, so that guide sleeve 10 is when being fixed on the chamber wall of right secondary valve pocket, the space that stroke passes for combustion gas between the outer circumferential face of guide sleeve 10 and the chamber wall of right secondary valve pocket.The right-hand member of valve rod 16 is provided with locking nut 18 and the pad 19 being connected with piston anti-avulsion on cylinder.
The present embodiment in use, position as shown in Figure 1, the nitrile rubber seal ring 3 in spool 4 left sides is pressed on the valve seat in left side, so that spool 4 is left secondary valve pocket shutoff, and right secondary valve pocket and main valve chamber is communicated with.When needs switch spool 4 between left and right secondary valve pocket, by air cylinder driven valve rod 16, spool 4 is pulled to the right, until the nitrile rubber seal ring 3 on spool 4 right sides is pressed on the valve seat on right side, with by right secondary valve pocket shutoff, left secondary valve pocket can be communicated with main valve chamber, active block stop 13 on valve rod 16 can stop in the left side of fixed stop 14 by back of the body shelves simultaneously, and stops valve rod 16 to pull spool 4 to continue to move right.
In use, guide sleeve 10 can reduce swing and the seismism that fuel gas flow causes valve rod 16, increases. the stability of valve rod 16.Indicating arrangement on connecting stud 17 can read by position shown in active block stop 13; so that observe spool 4 in the interior present position of main valve body 1 and whether corresponding secondary valve pocket sealed; and coordinate to stop valve rod 16 that axial rotation occurs by the guiding between the supporting section of connecting stud 17 and the guiding groove of active block stop 13; make can avoid spool 4 and valve rod 16 to surpass range by fixed stop 14 in the movement process of valve rod 16; protection valve rod 16 and spool 4, the safety and reliability of raising selector valve.The nitrile rubber seal ring 3 that the spool 4 of this selector valve arranges respectively by left and right side is realized dual face seals, and the sealing that the mode by dual face seals realizes between left and right secondary valve pocket is changed, realize convection cell commutation, by and stopping transportation, guarantee the online detection of selector valve and maintenance and change miscellaneous part.Realize the uninterrupted fluid of carrying.Reduction is to damaging the ageing requirement of maintenance of parts.
In the above-described embodiments, this selector valve is applicable in gas pipeline system, and in other embodiments, this selector valve also goes in other fluid-duct-systems such as current, coal gas.
In the above-described embodiments, at the right-hand member of valve rod, be connected with cylinder, with actuate valve stem left and right push-and-pull spool, in other embodiments, valve rod also can drive by other modes such as manual, electric pushrod, oil hydraulic cylinders.
In the above-described embodiments, at the middle part of valve rod, be provided with for supporting the guide sleeve of valve rod, with the amount of deflection that reduces valve rod self on the impact that its push pull maneuver was produced, in other embodiments, in the situation that not considering that valve rod amount of deflection affects, described guide sleeve also can be got rid of.
In the above-described embodiments, right side at active block stop is provided with fixed stop, to stop spool to switch excessively when switching to the right, in other embodiments, the left and right sides of active block stop also can arrange respectively fixed stop, or the left and right sides at fixed stop arranges respectively active block stop, with the left and right directions to spool, switch and all limit.
Claims (9)
1. a selector valve, in comprising, establish the valve body of valve pocket, in described valve pocket, be provided with two valve seats that relative spacing distributes, between two valve seats, be equipped with for getting out of the way another spool when sealing in one of them that is pressed on two valve seats, on described spool, be fixed with the valve rod moving for push-and-pull valve rod under driving at manual or power plant between two valve seats, it is characterized in that, on described valve rod, fix or be wholely set and the spaced active block stop of spool, fixing or be wholely set to be useful at seal spool and be pressed on valve seat and after motion puts in place on the chamber wall of described valve pocket, the fixed stop that stops spool to move to the direction that continues compression valve seat, described fixed stop is distribute relative with active block stop on the movement direction of valve rod.
2. selector valve according to claim 1, is characterized in that, described valve rod has the extension that passes valve body, described active block stop on described extension, described fixed stop position corresponding with active block stop outside valve body.
3. selector valve according to claim 2, it is characterized in that, on described valve body, fix or be wholely set the guide rail coordinating with active block stop guiding on valve rod movement direction, described guide rail is provided with the indicating arrangement for mark active block stop present position on valve rod movement direction.
4. according to the selector valve described in any one in claims 1 to 3, it is characterized in that, it is switching stroke distances through distance that described spool completes single switching institute between two valve seats, and described switching stroke distances is the twice of the distance size between valve rod movement direction upper valve core opposite end surface.
5. according to the selector valve described in any one in claims 1 to 3, it is characterized in that, described valve rod is assemblied in the perforation of offering on valve body along movement direction guiding, between the hole wall of described perforation and the outer circumferential face of spool, is provided with filler group.
6. selector valve according to claim 5, is characterized in that, described filler group comprises the teflin ring that is folded in the V-type between valve rod outer circumferential face and the wall surface of the hole of perforation.
7. according to the selector valve described in any one in claims 1 to 3, it is characterized in that, described valve rod has the guide section that extends to the phase dorsal part of two valve seats along movement direction, and on the wall of the chamber of valve pocket, fix or be wholely set the guide sleeve coordinating with described guide section guiding movement on valve rod movement direction, between the chamber wall of described guide sleeve and valve pocket, there is the space of passing for fluid.
8. according to the selector valve described in any one in claims 1 to 3, it is characterized in that, in described valve body comprises, establish main valve chamber main valve body and in establish two auxiliary valve bodies of secondary valve pocket, two auxiliary valve bodies are distributed in the relative both sides of main valve body relatively, main valve body is connected removable being connected by flange respectively with two auxiliary valve bodies, between main valve body and each auxiliary valve body, between two relative flanges, is being folded with respectively seal ring.
9. according to the selector valve described in any one in claims 1 to 3, it is characterized in that, in described valve seat, be provided with the endoporus of the taper hole shape broadening gradually to the direction opening near spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466619.2U CN203404419U (en) | 2013-08-01 | 2013-08-01 | Change valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466619.2U CN203404419U (en) | 2013-08-01 | 2013-08-01 | Change valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404419U true CN203404419U (en) | 2014-01-22 |
Family
ID=49940356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320466619.2U Expired - Lifetime CN203404419U (en) | 2013-08-01 | 2013-08-01 | Change valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224590A (en) * | 2016-08-24 | 2016-12-14 | 张家港市楠鑫科技有限公司 | The negative pressure reversing arrangement of high-speed canning valve |
-
2013
- 2013-08-01 CN CN201320466619.2U patent/CN203404419U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224590A (en) * | 2016-08-24 | 2016-12-14 | 张家港市楠鑫科技有限公司 | The negative pressure reversing arrangement of high-speed canning valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Card 1, 2, 3, 11 and 12, 20 / F, international financial center, no.16-3, Zhongshan Third Road, East District, Zhongshan City, Guangdong Province, 528400 Patentee after: Runzhi Technology Co.,Ltd. Address before: 45 000 1 No. 75 Science Avenue, Zhengzhou High-tech Industrial Development Zone, Henan Province Patentee before: ZHENGZHOU ZHENGRAN PRESSURE CONTROL TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
|
| CX01 | Expiry of patent term |