CN203585471U - Direct flow piston type guide adjustable reducing valve - Google Patents
Direct flow piston type guide adjustable reducing valve Download PDFInfo
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- CN203585471U CN203585471U CN201320731218.5U CN201320731218U CN203585471U CN 203585471 U CN203585471 U CN 203585471U CN 201320731218 U CN201320731218 U CN 201320731218U CN 203585471 U CN203585471 U CN 203585471U
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- main valve
- flap
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- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The utility model relates to a direct flow piston type guide adjustable reducing valve which comprises a main valve and a guide valve. A central cavity control chamber is arranged in a valve body of the main valve. A main valve clack with the outer end matched with a valve seat of the main valve is arranged in an opening of the central cavity control chamber. A central cavity inlet throttling hole leading to the central cavity control chamber is formed in the middle of the main valve clack. A central cavity outlet throttling hole leading to an inner cavity of a valve body of the guide valve is formed in the central cavity control chamber. A medium outlet hole leading to an inner cavity of the valve body of the main valve is formed in the valve body of the guide valve. A valve core controlling the magnitude of the flow of the central cavity outlet throttling hole is arranged in the valve body of the guide valve and comprises a piston adjustable in position and a piston valve clack matched with a valve seat of the guide valve. A front connecting rod of the piston valve clack is fixedly connected with the piston. A rod hollow hole enabling cavities in the two ends of the piston valve clack to be communicated with each other is formed in the connecting rod. The direct flow piston type guide adjustable reducing valve is small in occupied space, can be arranged vertically or horizontally, is large in flow capacity and stable in work, and ensures that the throttling holes are not blocked.
Description
Technical field
The utility model relates to a kind of direct current piston type guide adjustable pressure-reducing valve.
Background technique
Reduction valve is a kind of special arrangement of automatic reduction working pressure of pipeline, and effect is after given pressure relief ranges, the medium of elevated pressures can be reduced to setting pressure.It can be reduced to the higher fluid pressure of pipeline before valve the required level of pipeline after valve.The transmission medium is here mainly water.Reduction valve is widely used in tall building, too high region, mine and other occasions of city water-supply pipe network hydraulic pressure, to guarantee in water supply system that each obtains suitable service hydraulic pressure and flow with water spot.In view of leak rate and the waste degree of water is almost directly proportional with the hydraulic pressure size of water supply system, so reduction valve has the system conditions of improvement and potential water saving effect, and its water-saving result is about 30% according to statistics.But, the reduction valve of existing structure exist take up space large, comparatively limit to mounting point, negotiability is limited, it is unreliable to work and the easy shortcoming such as obstruction of restriction.
Model utility content
The problem that the utility model exists for above-mentioned prior art makes improvements, the technical problems to be solved in the utility model be to provide a kind of take up space little, easy for installation, negotiability large, stable working and the nonclogging direct current piston type of restriction guide adjustable pressure-reducing valve.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of direct current piston type guide adjustable pressure-reducing valve, comprise main valve, the control end of described main valve is connected with pilot valve, in described valve body of main valve, be provided with lumen control room, in the opening of described lumen control room, be provided with the main valve flap matching with main valve valve seat in outer end, described main valve flap middle part offers the lumen inlet throttle hole of leading to lumen control room, described lumen control room offers the lumen outlet throttling hole of leading to pilot valve body inner chamber, described pilot valve body offers the media outlet hole of leading to valve body of main valve inner chamber, in described pilot valve body, be provided with the spool of controlling lumen outlet throttling hole uninterrupted, described spool comprises the piston that position is adjustable and the piston flap matching with pilot valve valve seat, the front link of described piston flap is fixedly connected with piston, in described connecting rod, offer through hole in the bar that is communicated with piston flap two ends cavity.
Further, described main valve valve seat is installed in the entrance point of valve body of main valve, described main valve flap the inner is connected with lumen control room by main spring, the outer side wall of described main valve flap is sealed and matched by the madial wall in O type circle and lumen control room, and the front end of described main valve flap is provided with the seal ring that can coordinate with main valve valve base sealing.
Further, described pilot valve body two ends are connected with respectively pilot valve protecgulum and pilot valve bonnet, described piston outer side wall is sealed and matched by the front end madial wall of O type circle and pilot valve body, the rear end outer side wall of described piston flap is sealed and matched by the madial wall of O type circle and pilot valve bonnet, and the front end of described piston flap is provided with the seal ring that can coordinate with pilot valve valve base sealing.
Further, in described pilot valve protecgulum, be provided with the pressure regulating screw that withstands piston by pressure adjusting spring.
Further, described valve body of main valve is provided with the pressure gauge that shows its inner chamber pressure medium.
Compared with prior art, the utlity model has following beneficial effect: (1) takes up space little, can vertically install, also can level install; (2) the valve pocket structure of straight-through type, negotiability is large, stable working; (3) adopt guide's valve rod inner via hole structure, guarantee that restriction does not stop up.Outlet pressure can be adjusted and set to this direct current piston type guide adjustable pressure-reducing valve as required, and have voltage regulation result; Outlet pressure after adjusting does not change because of the variation of the entrance point pressure of valve, not because the variation of valve export end flow changes yet; By the energy of medium itself, automatically keep outlet pressure within the specific limits, be applicable to need to subtract in all kinds of domestic waters, production feedwater, fire supply, HVAC system the occasion of dynamic pressure and static pressure.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structural representation.
In figure: 1-valve body of main valve, 2-lumen control room, 3-main valve valve seat, 4-main valve flap, 5-lumen inlet throttle hole, 6-lumen outlet throttling hole, 7-pilot valve body, 8-media outlet hole, 9-piston, 10-piston flap, 11-pilot valve valve seat, through hole in 12-bar, 13-main spring, 14-O type circle, 15-seal ring, 16-pilot valve protecgulum, 17-pilot valve bonnet, 18-pressure adjusting spring, 19-pressure regulating screw, 20-pressure gauge.
Embodiment
As shown in Figure 1, a kind of direct current piston type guide adjustable pressure-reducing valve, comprise main valve, the control end of described main valve is connected with pilot valve, in described valve body of main valve 1, be provided with lumen control room 2, in 2 openings of described lumen control room, be provided with the main valve flap 4 matching with main valve valve seat 3 in outer end, described main valve flap 4 middle parts offer the lumen inlet throttle hole 5 of leading to lumen control room 2, described lumen control room 2 offers the lumen outlet throttling hole 6 of leading to pilot valve body 7 inner chambers, described pilot valve body 7 offers the media outlet hole 8 of leading to valve body of main valve 1 inner chamber, in described pilot valve body 7, be provided with the spool of controlling lumen outlet throttling hole 6 uninterrupteds, described spool comprises the adjustable piston in position 9 and the piston flap 10 matching with pilot valve valve seat 11, the front link of described piston flap 10 is fixedly connected with piston 9, in described connecting rod, offer through hole 12 in the bar that is communicated with piston flap 10 two ends cavitys.
In the present embodiment, described main valve valve seat 3 is installed in the entrance point of valve body of main valve 1, described main valve flap 4 the inners are connected with lumen control room 2 by main spring 13, the outer side wall of described main valve flap 4 is sealed and matched by O type circle 14 and the madial wall in lumen control room 2, and the front end of described main valve flap 4 is provided with the seal ring 15 that can be sealed and matched with main valve valve seat 3.
In the present embodiment, described pilot valve body 7 two ends are connected with respectively pilot valve protecgulum 16 and pilot valve bonnet 17, and described pilot valve protecgulum 16 generally can be connected by internal and external threads with pilot valve body 7; Described piston 9 outer side walls are sealed and matched by O type circle 14 and the front end madial wall of pilot valve body 7, the rear end outer side wall of described piston flap 10 is sealed and matched by O type circle 14 and the madial wall of pilot valve bonnet 17, and the front end of described piston flap 10 is provided with the seal ring 15 that can be sealed and matched with pilot valve valve seat 11.
In the present embodiment, in described pilot valve protecgulum 16, be provided with the pressure regulating screw 19 that withstands piston 9 by pressure adjusting spring 18.Described valve body of main valve 1 is provided with the pressure gauge 20 that shows its inner chamber pressure medium.The technical parameter of this direct current piston type guide adjustable pressure-reducing valve is as follows: (1) minimum inlet outlet pressure differential that allows: 0.1 MPa; (2) the maximum inlet outlet pressure differential that allows: domestic water 0.4 MPa, fire-fighting water 0.8 MPa; (3) range of regulation: 0.1-1.4 MPa.
In the present embodiment, the working principle of this direct current piston type guide adjustable pressure-reducing valve is as follows: when the pressure adjusting spring 18 of pilot valve is in uncompressed state, now the piston flap 10 of main valve flap 4 and pilot valve is in closed condition; By clockwise rotating pressure regulating screw 19, compression pressure adjusting spring 18, moves pilot valve piston 9, and piston 9 drives piston flap 10 to leave pilot valve valve seat 11 by connecting rod, and medium is entered the lumen control room 2 of main valve by lumen inlet throttle hole 5; The flow in lumen outlet throttling hole 6 is greater than the flow in lumen inlet throttle hole 5, and main valve flap 4, under the effect of pressure medium, promotes main valve flap 4 and leaves main valve valve seat 3, makes after medium flow valves.When downstream pressure surpasses set pressure, medium enters piston flap 10 the other ends through through hole 12 influent streams in the bar of pilot valve, medium promotes piston flap 10 and to closing direction, moves thereupon, promote piston 9 simultaneously and move compression pressure adjusting spring 18, the gap of piston flap 10 and pilot valve valve seat 11 reduces, and the outlet throttling mouth flow in lumen control room 2 is reduced; The flow in lumen outlet throttling hole 6 is less than the flow in lumen inlet throttle hole 5, the pressure in the lumen control room 2 of main valve raises, force value is greater than the force value of main valve entrance point, promote main spring 13 and main valve flap 4, main valve flap 4 and the gap of main valve valve seat 3 are reduced, rate-of flow also reduces thereupon, makes downstream pressure also drop to new balance thereupon.Otherwise when downstream pressure is during lower than set pressure, main valve flap 4 increases with the gap of main valve valve seat 3, rate-of flow also increases thereupon, makes downstream pressure also increase the balance that reaches new thereupon.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (5)
1. a direct current piston type guide adjustable pressure-reducing valve, comprise main valve, the control end of described main valve is connected with pilot valve, it is characterized in that: in described valve body of main valve, be provided with lumen control room, in the opening of described lumen control room, be provided with the main valve flap matching with main valve valve seat in outer end, described main valve flap middle part offers the lumen inlet throttle hole of leading to lumen control room, described lumen control room offers the lumen outlet throttling hole of leading to pilot valve body inner chamber, described pilot valve body offers the media outlet hole of leading to valve body of main valve inner chamber, in described pilot valve body, be provided with the spool of controlling lumen outlet throttling hole uninterrupted, described spool comprises the piston that position is adjustable and the piston flap matching with pilot valve valve seat, the front link of described piston flap is fixedly connected with piston, in described connecting rod, offer through hole in the bar that is communicated with piston flap two ends cavity.
2. direct current piston type guide adjustable pressure-reducing valve according to claim 1, it is characterized in that: described main valve valve seat is installed in the entrance point of valve body of main valve, described main valve flap the inner is connected with lumen control room by main spring, the outer side wall of described main valve flap is sealed and matched by the madial wall in O type circle and lumen control room, and the front end of described main valve flap is provided with the seal ring that can coordinate with main valve valve base sealing.
3. direct current piston type guide adjustable pressure-reducing valve according to claim 1, it is characterized in that: described pilot valve body two ends are connected with respectively pilot valve protecgulum and pilot valve bonnet, described piston outer side wall is sealed and matched by the front end madial wall of O type circle and pilot valve body, the rear end outer side wall of described piston flap is sealed and matched by the madial wall of O type circle and pilot valve bonnet, and the front end of described piston flap is provided with the seal ring that can coordinate with pilot valve valve base sealing.
4. direct current piston type guide adjustable pressure-reducing valve according to claim 3, is characterized in that: in described pilot valve protecgulum, be provided with the pressure regulating screw that withstands piston by pressure adjusting spring.
5. direct current piston type guide adjustable pressure-reducing valve according to claim 1, is characterized in that: described valve body of main valve is provided with the pressure gauge that shows its inner chamber pressure medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731218.5U CN203585471U (en) | 2013-11-19 | 2013-11-19 | Direct flow piston type guide adjustable reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731218.5U CN203585471U (en) | 2013-11-19 | 2013-11-19 | Direct flow piston type guide adjustable reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585471U true CN203585471U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731218.5U Expired - Fee Related CN203585471U (en) | 2013-11-19 | 2013-11-19 | Direct flow piston type guide adjustable reducing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203585471U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269894A (en) * | 2017-07-27 | 2017-10-20 | 南京德沃克自动化有限公司 | The blender of fire-fighting foam solution extinguishing chemical |
| CN107763266A (en) * | 2016-08-18 | 2018-03-06 | 阿司米阀门有限公司 | A kind of low temperature resistant pilot operated safety valve of high temperature resistant |
-
2013
- 2013-11-19 CN CN201320731218.5U patent/CN203585471U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763266A (en) * | 2016-08-18 | 2018-03-06 | 阿司米阀门有限公司 | A kind of low temperature resistant pilot operated safety valve of high temperature resistant |
| CN107269894A (en) * | 2017-07-27 | 2017-10-20 | 南京德沃克自动化有限公司 | The blender of fire-fighting foam solution extinguishing chemical |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Fuxing Road, Jinan District, Fuzhou city of Fujian province 350014 No. 49 No. 3 No. 7 No. -8 store Patentee after: FUJIAN QUANPAI VALVE TECHNOLOGY CO.,LTD. Address before: 350014 Building 1, mill Li Industrial Zone, Tang Dian Town, Xin Dian Town, Jinan District, Fuzhou, Fujian Patentee before: Fujian High & Middle Pressure Valve Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 |