CN204176057U - Reduction valve - Google Patents
Reduction valve Download PDFInfo
- Publication number
- CN204176057U CN204176057U CN201420631806.6U CN201420631806U CN204176057U CN 204176057 U CN204176057 U CN 204176057U CN 201420631806 U CN201420631806 U CN 201420631806U CN 204176057 U CN204176057 U CN 204176057U
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- CN
- China
- Prior art keywords
- valve body
- groove
- spool
- processed
- lower valve
- 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 reduction valve relates to a kind of hydrovalve for agricultural irrigation.Its objective is the reduction valve that a kind of range of regulation is stablized, cost is low in order to provide, the life-span is long.The utility model comprises upper valve body, water inlet pressure regulation cap, spool, pressure adjusting spring and lower valve body, above lower valve body, upper valve body is installed, through hole and the first groove is processed with in the middle part of lower valve body, spool is arranged in lower valve hole, spool bottom is processed with the first flange, be wound with pressure adjusting spring outside spool, water inlet pressure regulation cap is positioned at above spool.Also comprise upper valve body neck bush, lower valve body support, special-shaped barrier film and barrier film snap close.Lower valve body support installing is on the first groove, upper valve body neck bush is positioned at outside pressure adjusting spring, the 3rd groove is had bottom upper valve body neck bush, barrier film snap close is installed in the middle part of spool, barrier film snap close bottom is processed with the second flange, second flange and the first flange-shape circularize slideway, and special-shaped barrier film one end is placed in the 3rd groove, and the other end is positioned at annular slide track.
Description
Technical field
The utility model relates to a kind of hydrovalve, particularly relates to a kind of reduction valve for agricultural irrigation.
Background technique
Current domestic reduction valve is a lot, is also used in different field, automobile industry, chemical industry, petroleum industry etc., and irrigates industry and also include, and is mostly all used in main line, to prevent in pipeline moment water hammer to carry out brokenly ring to pipeline, thus protection pipeline.And the working pressure that pressure protect effect keeps stable is simultaneously played to product, make shower nozzle or other irrigation products, at constant operation pressure operation, thus reach and spray evenly to crops in effective coverage range, stability of flow.
At present, domestic relief valve body, diaphragm and spring material are selected incorrect, and reduction valve is lower for working life, at work simultaneously, regulate pressure range also distortion, cause shower nozzle or other irrigator cisco unity malfunctions.
Model utility content
The technical problems to be solved in the utility model is to provide the reduction valve that a kind of range of regulation is stablized, cost is low, the life-span is long.
The utility model reduction valve, comprise upper valve body, water inlet pressure regulation cap, spool, pressure adjusting spring, lower valve body, above described lower valve body, upper valve body is installed, described upper valve body upper inner is processed with screw thread, through hole and the first groove is processed with in the middle part of lower valve body, described spool is arranged in lower valve hole, spool bottom is processed with the first flange, described first flange is positioned at above the first groove, spool is hollow, pressure adjusting spring is wound with outside spool, described water inlet pressure regulation cap is arranged in the second groove of upper valve body top processing, water inlet pressure regulation cap is hollow, and be positioned at above spool, described upper valve body, lower valve body, water inlet pressure regulator valve, spool and pressure adjusting spring are positioned on same axis.Comprise upper valve body neck bush in addition, lower valve body support, special-shaped barrier film and barrier film snap close, described lower valve body support is the disc of hollow, be arranged on the first groove, and its edge is higher than the first groove upper surface, described upper valve body neck bush is positioned at outside pressure adjusting spring, upper valve body neck bush top outer matches with bottom water inlet pressure regulation cap, inner side coordinates with pressure adjusting spring top installs, match with lower valve body upper surface bottom upper valve body neck bush, wherein be processed with the 3rd groove bottom upper valve body neck bush, in the middle part of described spool, outside is processed with restraining groove, restraining groove outside is provided with barrier film snap close, described barrier film snap close bottom is processed with the second flange, described second flange lower surface and the first lug upper surface form an annular slide track, second lug upper surface matches with bottom pressure adjusting spring, described special-shaped barrier film is flexible material, its one end is placed in the 3rd groove, and be fixedly clamped by lower valve body bracket edge, the other end is positioned at annular slide track, described special-shaped barrier film, lower valve body support and the first flange surround pressure buffer chamber jointly, described first flange lower surface is processed with the 4th groove, described 4th groove connecting valve core inner and outside.
The utility model reduction valve, is provided with lower valve seal pad between wherein said lower valve body support and the first groove.
The utility model reduction valve, wherein said lower valve hole sidewall is processed with seal groove, is provided with the first seal ring in seal groove, for sealing the surface of contact of lower valve hole and spool bottom.
The utility model reduction valve, wherein said upper valve body neck bush top outer is processed with the first annular boss, described first annular boss is processed with the 5th groove, the second annular boss that described 5th groove is processed with water inlet pressure regulation cap bottom matches, inside and outside 5th groove, both sides are provided with the second seal ring and the 3rd seal ring, are respectively used to the surface of contact sealing upper valve body neck bush and spool and upper valve body.
The utility model reduction valve, wherein said upper valve body is connected by valve body attachment screw with lower valve body, and described upper valve body and lower valve body selected materials are fiber glass reinforcement.
The utility model reduction valve, wherein said special-shaped barrier film adopts high-quality oilcloth to do matrix, and skin scribbles nitrile butadiene rubber.
The utility model reduction valve, wherein said pressure adjusting spring selects stainless steel material.
The utility model reduction valve difference from prior art is that the utility model relief valve body is inner by special-shaped barrier film, lower valve body support and the first flange surround pressure buffer chamber jointly, after water enters pressure buffer chamber there is deformation in pressure buffer chamber, and make valve inner reach the pressure of setting eventually through the adjustment of pressure adjusting spring, wherein special-shaped barrier film adopts the flexible material of high-quality, elasticity is stronger, pressure buffer chamber effectively can prevent the pressure regulation instability caused because hydraulic pressure is excessive, work under valve body is in steady pressure state all the time simultaneously, working life is also extended.
Below in conjunction with accompanying drawing, reduction valve of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model reduction valve;
Fig. 2 is the sectional view of spool in the utility model reduction valve;
Fig. 3 is the worm's eye view of spool in the utility model reduction valve.
Embodiment
As shown in Figure 1, the utility model reduction valve comprises upper valve body 1, water inlet pressure regulation cap 2, upper valve body neck bush 5, spool 8, pressure adjusting spring 6, barrier film snap close 9, lower valve body support 10, special-shaped barrier film 14 and lower valve body 13.Be provided with upper valve body 1 above lower valve body 13, upper valve body 1 upper inner is processed with screw thread, for connecting water pipe.Upper valve body 1 is connected by valve body attachment screw 7 with lower valve body 13, and described upper valve body 1 and lower valve body 13 selected materials are fiber glass reinforcement.Through hole and the first groove 16 is processed with in the middle part of lower valve body 13.Lower valve body support 10 is the disc of hollow, is arranged on the first groove 16 li, and its edge is higher than the first groove 16 upper surface.Between lower valve body support 10 and the first groove 16, lower valve seal pad 11 is installed.As shown in Figure 1, Figure 2 and Figure 3, spool 8 is arranged in lower valve body 13 through hole, spool 8 is hollow, spool 8 bottom is processed with the first flange 17, first flange 17 is positioned at above the first groove 16, first flange 17 lower surface is processed with the 4th groove the 18, four groove 18, and to be communicated with spool 8 inside and outside, outside for water to be guided to spool 8 from spool 8 inside.In the middle part of spool 8, outside is processed with restraining groove 25, and as shown in Figure 1, restraining groove 25 outside is provided with barrier film snap close 9, and barrier film snap close 9 bottom is processed with the second flange 19, second flange 19 lower surface and the first flange 17 upper surface forms an annular slide track.Upper valve body neck bush 5 is positioned at outside spool 8, upper valve body neck bush 5 top outer is processed with the first annular boss 21, first annular boss 21 is processed with the 5th groove 24, match with lower valve body 13 upper surface bottom upper valve body neck bush 5, be wherein processed with the 3rd groove 23 bottom upper valve body neck bush 5.Special-shaped barrier film 14 is flexible material, and adopt high-quality oilcloth to do matrix, skin scribbles nitrile butadiene rubber, and its one end is placed in the 3rd groove 23, and is fastened by lower valve body support 10 edge clamping, and the other end is positioned at annular slide track.Special-shaped barrier film 14, lower valve body support 10 and the first flange 17 surround pressure buffer chamber 15 jointly.Be wound with pressure adjusting spring 6 between spool 8 and upper valve body neck bush 5, pressure adjusting spring 6 is stainless steel material, matches with upper valve body neck bush 5 inside top in pressure adjusting spring 6 top, matches bottom pressure adjusting spring 6 with the second flange 19 upper surface.Water inlet pressure regulation cap 2 is hollow, and the second annular boss 22 of its underpart processing matches with the 5th groove 24, is positioned at second groove 20 li of upper valve body 1 top processing above water inlet pressure regulation cap 2.Water inlet pressure regulation cap 2 is positioned at above spool 8.Upper valve body 1, lower valve body 13, water inlet pressure regulation cap 2, spool 8 and pressure adjusting spring 6 are positioned on same axis.Lower valve body 13 through-hole side wall is processed with seal groove, the first seal ring 12 is installed in seal groove, for sealing the surface of contact of lower valve body 13 through hole and spool 8 bottom.Inside and outside 5th groove 24, both sides are respectively arranged with the second seal ring 4 and the 3rd seal ring 3, are respectively used to the surface of contact sealing upper valve body neck bush 5 and spool 8 and upper valve body 1.
The utility model reduction valve working principle is as follows: high-pressure water flow enters reduction valve inside from reduction valve upper valve body 1, spool 8 is entered after water inlet pressure regulation cap 2, when in the middle part of water sport to spool 8, part water can enter pressure buffer chamber 15 by the 4th groove 18 in the middle part of spool 8, stressed beginning produces deformation in pressure buffer chamber 15, special-shaped barrier film 14 drives barrier film snap close 9, spool 8 together moves upward, pressure adjusting spring 6 pressurized, pressure buffer chamber 15 becomes large, hydraulic pressure reduces, final under the regulating action of pressure adjusting spring 6, pressure buffer chamber 15 volume stability is constant, reduction valve outlet hydraulic pressure reaches setting value, pressure regulation work completes.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (7)
1. a reduction valve, comprise upper valve body, water inlet pressure regulation cap, spool, pressure adjusting spring, lower valve body, above described lower valve body, upper valve body is installed, described upper valve body upper inner is processed with screw thread, through hole and the first groove is processed with in the middle part of lower valve body, described spool is arranged in lower valve hole, spool bottom is processed with the first flange, described first flange is positioned at above the first groove, spool is hollow, pressure adjusting spring is wound with outside spool, described water inlet pressure regulation cap is arranged in the second groove of upper valve body top processing, water inlet pressure regulation cap is hollow, and be positioned at above spool, described upper valve body, lower valve body, water inlet pressure regulator valve, spool and pressure adjusting spring are positioned on same axis, it is characterized in that: also comprise upper valve body neck bush, lower valve body support, special-shaped barrier film and barrier film snap close, described lower valve body support is the disc of hollow, be arranged on the first groove, and its edge is higher than the first groove upper surface, described upper valve body neck bush is positioned at outside pressure adjusting spring, upper valve body neck bush top outer matches with bottom water inlet pressure regulation cap, inner side coordinates with pressure adjusting spring top installs, match with lower valve body upper surface bottom upper valve body neck bush, wherein be processed with the 3rd groove bottom upper valve body neck bush, in the middle part of described spool, outside is processed with restraining groove, restraining groove outside is provided with barrier film snap close, described barrier film snap close bottom is processed with the second flange, described second flange lower surface and the first lug upper surface form an annular slide track, second lug upper surface matches with bottom pressure adjusting spring, described special-shaped barrier film is flexible material, its one end is placed in the 3rd groove, and be fixedly clamped by lower valve body bracket edge, the other end is positioned at annular slide track, described special-shaped barrier film, lower valve body support and the first flange surround pressure buffer chamber jointly, described first flange lower surface is processed with the 4th groove, described 4th groove connecting valve core inner and outside.
2. reduction valve according to claim 1, is characterized in that: be provided with lower valve seal pad between described lower valve body support and the first groove.
3. reduction valve according to claim 1, is characterized in that: described lower valve hole sidewall is processed with seal groove, is provided with the first seal ring in seal groove, for sealing the surface of contact of lower valve hole and spool bottom.
4. reduction valve according to claim 1, it is characterized in that: described upper valve body neck bush top outer is processed with the first annular boss, described first annular boss is processed with the 5th groove, the second annular boss that described 5th groove is processed with water inlet pressure regulation cap bottom matches, inside and outside 5th groove, both sides are provided with the second seal ring and the 3rd seal ring, are respectively used to the surface of contact sealing upper valve body neck bush and spool and upper valve body.
5. reduction valve according to claim 1, is characterized in that: described upper valve body is connected by valve body attachment screw with lower valve body, and described upper valve body and lower valve body selected materials are fiber glass reinforcement.
6. reduction valve according to claim 1, is characterized in that: described special-shaped barrier film adopts high-quality oilcloth to do matrix, and skin scribbles nitrile butadiene rubber.
7. reduction valve according to claim 1, is characterized in that: described pressure adjusting spring selects stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631806.6U CN204176057U (en) | 2014-10-28 | 2014-10-28 | Reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631806.6U CN204176057U (en) | 2014-10-28 | 2014-10-28 | Reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204176057U true CN204176057U (en) | 2015-02-25 |
Family
ID=52564867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420631806.6U Expired - Fee Related CN204176057U (en) | 2014-10-28 | 2014-10-28 | Reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204176057U (en) |
-
2014
- 2014-10-28 CN CN201420631806.6U patent/CN204176057U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20211028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |