CN206860989U - Lock formula pressure-reducing valve - Google Patents
Lock formula pressure-reducing valve Download PDFInfo
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- CN206860989U CN206860989U CN201720740009.5U CN201720740009U CN206860989U CN 206860989 U CN206860989 U CN 206860989U CN 201720740009 U CN201720740009 U CN 201720740009U CN 206860989 U CN206860989 U CN 206860989U
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- flashboard
- valve
- pressure
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Abstract
The utility model discloses a kind of lock formula pressure-reducing valve, it includes valve body, bonnet and fluid intake and fluid issuing below valve body, valve rod is provided with the pressure regulating cavity of valve body, valve stem top is provided with bearing plate, diaphragm of the sealing provided with ring-type between the edge and valve body of bearing plate, spring is provided between valve body above bearing plate, pressure regulating cavity connects with fluid issuing；Guide channel plate, mobile flashboard, fixed flashboard and the driving lever located at stem bottom are provided with the relief chamber of valve body, mobile flashboard is provided with a plurality of first pod apertures, fixed flashboard is provided with a plurality of second pod apertures, and mobile flashboard is reciprocating along the length direction of valve rod in the presence of guide channel plate.The utility model can not only flow automatic regulation, keep downstream pressure stable, moreover it is possible to be issued to good sealing effectiveness in High Pressure Difference, and there is certain resistance to erosion ability.
Description
Technical field
It the utility model is related to valve field, and in particular to a kind of lock formula pressure-reducing valve.
Background technology
Pressure-reducing valve is the outlet pressure that inlet pressure is reduced to a certain needs by adjusting, and relies on the energy of medium in itself
Amount, outlet pressure is set to keep stable valve automatically.From the viewpoint of hydrodynamics, pressure-reducing valve is that a local resistance can become
The restricting element of change, i.e., by changing orifice size, change the kinetic energy of flow velocity and fluid, cause the different pressure losses, from
And reach the purpose of decompression.Then by control and the regulation of regulating system, the fluctuation and spring force for making downstream pressure balance each other,
Downstream pressure is set to keep constant in certain error range.
Certain leakage problem be present, have impact on using effect in existing pressure-reducing valve in High Pressure Difference operating mode.
The content of the invention
Goal of the invention of the present utility model is to provide a kind of lock formula pressure-reducing valve, can not only flow automatic regulation, keep valve
Pressure stability afterwards, moreover it is possible to be issued to good sealing effectiveness in High Pressure Difference, and there is certain resistance to erosion ability.
To achieve the above object of the invention, the technical solution adopted in the utility model is：A kind of lock formula pressure-reducing valve, it includes valve
Body, the bonnet on valve body and the fluid intake below valve body and fluid issuing, the valve body is interior to be provided with pressure regulating cavity
And relief chamber；
Be provided with valve rod in the pressure regulating cavity, the valve stem top is provided with bearing plate, the edge and valve body of the bearing plate it
Between be provided with the diaphragm of ring-type, the diaphragm fixes with bearing plate and valve seal respectively, above the bearing plate between valve body
Provided with spring, the pressure regulating cavity connects with fluid issuing；
Guide channel plate, mobile flashboard, fixed flashboard and the driving lever located at stem bottom, the shifting are provided with the relief chamber
Dynamic flashboard is provided with a plurality of first pod apertures, and the fixed flashboard is provided with a plurality of second pod apertures and the first guiding
Groove, one end away from valve rod is connected through the first guide groove with moving flashboard on the driving lever, right on the mobile flashboard
The side of fluid intake is answered to be provided with a guide pad, the guide channel plate is provided with the second guide groove of corresponding guide pad, and described first
The length direction of guide groove and the second guide groove is consistent with the length direction of valve rod；
Wherein, resistance to erosion low friction coefficient materials are sprayed on the sealing surface between mobile flashboard and fixed flashboard, preferably
For ceramic material.
Above, the mobile flashboard is equivalent to valve element, and the fixed flashboard is equivalent to valve seat, when valve element is in opening state
During state, the first pod apertures on mobile flashboard are alignd with the second pod apertures on fixed flashboard so that medium can pass through；
When valve element is closed, the first pod apertures on mobile flashboard are staggered with the second pod apertures on fixed flashboard, are situated between
Matter can not pass through.
Further, spring base is provided with positioned at spring top in the pressure regulating cavity, the bonnet is provided with adjusting screw, institute
One end in adjusting screw in pressure regulating cavity is stated to be fixedly connected with spring base.
Further, dashpot is provided between the diaphragm and valve body, the dashpot connects with fluid issuing.
Further, the diaphragm is metallic membrane or rubber diaphragm.
Preferably, the mobile flashboard is provided with the first of a plurality of strips along the parallel distribution in shaft length direction and led
Discharge orifice, the fixed flashboard are provided with the second pod apertures of a plurality of strips along the parallel distribution in shaft length direction.
Further, sealing ring is provided between the guide channel plate and valve body.
Further, the bonnet is to be detachably connected with valve body.
Preferably, the bonnet is bolted on valve body.
Operation principle of the present utility model is：When pressing rise after valve, the medium of fluid issuing side is flowed into adjusting cavity,
Diaphragm is jacked up, diaphragm drives bearing plate and then risen with ovable valve stem, and the mobile flashboard for being fixed on driving lever end also and then rises,
Now, the first pod apertures on mobile flashboard are staggered with the second pod apertures on fixed flashboard, i.e., valve is closed,
Medium can not pass through；When drops after valve, bearing plate returns to original position under the action of the spring, and then with ovable valve stem
Drop, the mobile flashboard for being fixed on driving lever end also and then decline, now, in the first pod apertures and fixed flashboard on mobile flashboard
The second pod apertures alignment, i.e., valve is in opening, and medium can pass through, and so as to increase rate-of flow, thus protect
Hold the stabilization of downstream pressure.
Because above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：
1. the utility model, by the way that gate valve and pressure-reducing valve are combined, mobile flashboard is closed when rise is pressed after valve, in valve
Opened afterwards during drops, so as to flow automatic regulation, keep downstream pressure stable, and move flashboard in the presence of pressure difference
Fixed flashboard is pressed to, is provided by medium pressure itself in sealing, so as to be issued to good sealing effectiveness in High Pressure Difference；
2. the utility model sprays resistance to erosion low-friction coefficient material on the sealing surface between mobile flashboard and fixed flashboard
Material, improve resistance to erosion ability.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the stepping brake plate structure schematic diagram of the utility model embodiment one.
Fig. 3 is the mobile flashboard structure schematic diagram of the utility model embodiment one.
Fig. 4 is that the valve of the utility model embodiment one is closed schematic diagram.
Fig. 5 is that the valve of the utility model embodiment one is in opening schematic diagram.
Wherein：1st, valve body；2nd, bonnet；3rd, fluid intake；4th, fluid issuing；5th, valve rod；6th, bearing plate；7th, diaphragm；8th, bullet
Spring；9th, guide channel plate；10th, mobile flashboard；11st, fixed flashboard；12nd, driving lever；13rd, the first pod apertures；14th, the second pod apertures；15th,
One guide groove；16th, guide pad；17th, the second guide groove；18th, spring base；19th, adjusting screw；20th, dashpot；21st, sealing ring；
22nd, bolt.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Embodiment one：
Referring to shown in Fig. 1 to 3, a kind of lock formula pressure-reducing valve, it includes valve body 1, the bonnet 2 on valve body and located at valve
Fluid intake 3 and fluid issuing 4 below body, the valve body is interior to be provided with pressure regulating cavity and relief chamber；
Valve rod 5 is provided with the pressure regulating cavity, the valve stem top is provided with bearing plate 6, the edge and valve body of the bearing plate
Between be provided with the diaphragm 7 of ring-type, the diaphragm fixes with bearing plate and valve seal respectively, above the bearing plate with valve body it
Between be provided with spring 8, the pressure regulating cavity connects with fluid issuing；
Guide channel plate 9, mobile flashboard 10, fixed flashboard 11 and the driving lever located at stem bottom are provided with the relief chamber
12, the mobile flashboard is provided with a plurality of first pod apertures 13, and the fixed flashboard is provided with a plurality of second pod apertures 14
And first guide groove 15, one end away from valve rod is connected through the first guide groove with moving flashboard on the driving lever, institute
State and the side of fluid intake is corresponded on mobile flashboard be provided with a guide pad 16, the guide channel plate is provided with the second of corresponding guide pad
Guide groove 17, the length direction of first guide groove and the second guide groove are consistent with the length direction of valve rod；
Wherein, resistance to erosion low friction coefficient materials are sprayed on the sealing surface between mobile flashboard and fixed flashboard, preferably
For ceramic material.
In the present embodiment, the mobile flashboard is opened equivalent to valve element, the fixed flashboard equivalent to valve seat when valve element is in
When opening state, the first pod apertures on mobile flashboard are alignd with the second pod apertures on fixed flashboard so that medium can be smooth
Pass through；When valve element is closed, the first pod apertures on mobile flashboard are staggered with the second pod apertures on fixed flashboard
Open, medium can not pass through.
Spring base 18 is provided with positioned at spring top in the pressure regulating cavity, the bonnet is provided with adjusting screw 19, the tune
One end on section screw in pressure regulating cavity is fixedly connected with spring base.
Dashpot 20 is provided between the diaphragm and valve body, the dashpot connects with fluid issuing.
The diaphragm is metallic membrane or rubber diaphragm.
The mobile flashboard is provided with the first pod apertures of a plurality of strips along the parallel distribution in shaft length direction, institute
State the second pod apertures that fixed flashboard is provided with a plurality of strips along the parallel distribution in shaft length direction.
Sealing ring 21 is provided between the guide channel plate and valve body.
The bonnet is to be detachably connected with valve body.
The bonnet is fixed on valve body by bolt 22.
Referring to shown in Figure 4 and 5, the utility model when in use, when pressing rise after valve, the medium flow field of fluid issuing side
Enter in adjusting cavity, diaphragm is jacked up, diaphragm drives bearing plate and then risen with ovable valve stem, is fixed on the mobile flashboard of driving lever end
Also and then rise, now, the first pod apertures on mobile flashboard are staggered with the second pod apertures on fixed flashboard, i.e., at valve
In closed mode, medium can not pass through；When drops after valve, bearing plate returns to original position under the action of the spring, and then
Band ovable valve stem declines, and is fixed on the mobile flashboard of driving lever end and also and then declines, now, the first pod apertures on mobile flashboard with
The second pod apertures alignment on fixed flashboard, i.e., valve is in opening, and medium can pass through, so as to increase medium flow field
Amount, thus keep the stabilization of downstream pressure.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to above-described embodiment will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to above-described embodiment shown in this article, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
- A kind of 1. lock formula pressure-reducing valve, it is characterised in that：It includes valve body, the bonnet on valve body and below valve body Fluid intake and fluid issuing, the valve body is interior to be provided with pressure regulating cavity and relief chamber；Valve rod is provided with the pressure regulating cavity, the valve stem top is provided with bearing plate, set between the edge and valve body of the bearing plate There is the diaphragm of ring-type, the diaphragm is fixed with bearing plate and valve seal respectively, is provided with above the bearing plate between valve body Spring, the pressure regulating cavity connect with fluid issuing；Guide channel plate, mobile flashboard, fixed flashboard and the driving lever located at stem bottom, the mobile lock are provided with the relief chamber Plate is provided with a plurality of first pod apertures, and the fixed flashboard is provided with a plurality of second pod apertures and the first guide groove, institute State one end away from valve rod on driving lever to be connected through the first guide groove and mobile flashboard, fluid is corresponded on the mobile flashboard The side of entrance is provided with a guide pad, and the guide channel plate is provided with the second guide groove of corresponding guide pad, first guide groove It is consistent with the length direction of valve rod with the length direction of the second guide groove.
- 2. lock formula pressure-reducing valve according to claim 1, it is characterised in that：In the pressure regulating cavity bullet is provided with positioned at spring top Spring abutment, the bonnet are provided with adjusting screw, and the one end being located in the adjusting screw in pressure regulating cavity is fixedly connected with spring base.
- 3. lock formula pressure-reducing valve according to claim 1, it is characterised in that：Dashpot is provided between the diaphragm and valve body, The dashpot connects with fluid issuing.
- 4. the lock formula pressure-reducing valve according to claim 1 or 3, it is characterised in that：The diaphragm is metallic membrane or rubber membrane Piece.
- 5. lock formula pressure-reducing valve according to claim 1, it is characterised in that：The mobile flashboard is provided with a plurality of along valve rod First pod apertures of the strip of the parallel distribution of length direction, the fixed flashboard are put down provided with a plurality of along shaft length direction Second pod apertures of the strip of row distribution.
- 6. lock formula pressure-reducing valve according to claim 1, it is characterised in that：Sealing is provided between the guide channel plate and valve body Circle.
- 7. lock formula pressure-reducing valve according to claim 1, it is characterised in that：The bonnet is to be detachably connected with valve body.
- 8. lock formula pressure-reducing valve according to claim 7, it is characterised in that：The bonnet is bolted on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740009.5U CN206860989U (en) | 2017-06-23 | 2017-06-23 | Lock formula pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740009.5U CN206860989U (en) | 2017-06-23 | 2017-06-23 | Lock formula pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860989U true CN206860989U (en) | 2018-01-09 |
Family
ID=60827400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720740009.5U Active CN206860989U (en) | 2017-06-23 | 2017-06-23 | Lock formula pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404880A (en) * | 2021-08-19 | 2021-09-17 | 徐州蕴康农业科技有限公司 | Anti-impact compression valve for agricultural irrigation |
-
2017
- 2017-06-23 CN CN201720740009.5U patent/CN206860989U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404880A (en) * | 2021-08-19 | 2021-09-17 | 徐州蕴康农业科技有限公司 | Anti-impact compression valve for agricultural irrigation |
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