CN203614845U - Pilot type pressure reducing valve - Google Patents
Pilot type pressure reducing valve Download PDFInfo
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- CN203614845U CN203614845U CN201320661883.1U CN201320661883U CN203614845U CN 203614845 U CN203614845 U CN 203614845U CN 201320661883 U CN201320661883 U CN 201320661883U CN 203614845 U CN203614845 U CN 203614845U
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- liquid outlet
- main valve
- outlet channel
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Abstract
The utility model relates to a pilot type pressure reducing valve, which comprises a main valve and a pilot valve, wherein the pilot valve is arranged on the main valve and is connected with the main valve in a sealed way, two ends of the pilot valve are respectively provided with a sealing screw bolt and a regulating screw bolt, a valve core installing passage is arranged in the pilot valve, a valve core structure is arranged in the valve core installing passage, a liquid outlet passage is arranged on a valve body of the main valve, a main valve core is arranged in the liquid outlet passage, one side of the liquid outlet passage is provided with a liquid inlet passage, an oil drainage passage is also arranged on the main valve, the oil drainage passage is connected with the valve core installing passage through a first connecting passage in a sealed way, and an overload protector is arranged in a cavity of the main valve core. The pilot type pressure reducing valve has the advantages that when the liquid outlet passage bears an outer load which increases the pressure of the liquid outlet passage, the overload protector arranged in the cavity of the main valve core generates the overflow, so the liquid pressure in the liquid outlet passage is maintained in a stable range, the pressure oil in the valve core installing passage is further enabled to be drained out through the oil drainage passage arranged on the main valve, the liquid outlet pressure of liquid in the liquid outlet passage is effectively stabilized, the control precision is high, and the performance is stable.
Description
Technical field
The utility model relates to a kind of reduction valve, especially a kind of piloted reducer.
Background technique
Piloted reducer is to adopt the aperture of the open-shut device in control valve body to regulate the flow of medium; by the pressure decreased of medium; regulate the aperture of open-shut device by the effect of downstream pressure simultaneously; downstream pressure is kept within the specific limits; in the situation that inlet pressure constantly changes; keep outlet pressure in the scope of setting, utensil is produced in protection life thereafter.The Pressure reducing ratio of this valve must be to a certain extent higher than system value; Even it also should be able to make response to positive interaction or reaction control signal in the time of maximum or minimum discharge, select for useful control range, it is 20% to 80% of peak rate of flow, normal for geometric ratio type or the ratio characteristic such as there is, there is the desired optimum flow characteristic of proportional control and range of flow.
On market, existing piloted reducer is mainly made up of main valve body and pilot valve body, pilot valve body is embedded in the top of main valve body, main valve body is made up of main valve seat, main valve housing, main valve plug, main spool spring, filler opening, oil outlet, this reduction valve there will be the unsettled phenomenon of liquid outlet channel pressure control, control accuracy is not high, and draining effect is bad.
Model utility content
The purpose of this utility model is in order to solve the existing defect of piloted reducer in prior art, and a kind of liquid outlet channel fluid pressure stability is provided, and liquid outlet channel pressure can be monitored, the piloted reducer that control accuracy is high.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of piloted reducer, the pilot valve that comprises main valve and be arranged on this main valve top and be tightly connected with it, the two ends of this pilot valve are respectively equipped with sealing bolt and adjusting bolt, be provided with spool passage is installed in described pilot valve, in this spool is installed passage, are provided with valve core structure;
The valve body of described main valve is provided with liquid outlet channel; in this liquid outlet channel, be provided with main valve plug; one side of described liquid outlet channel is provided with feed pathway; on described main valve, be also provided with draining passage; this draining passage is installed channel seal by the first connecting passage and described spool and is connected, and in the cavity of described main valve plug, is provided with overload protective device.
Above-mentioned a kind of piloted reducer, described valve core structure comprises Compress Spring, be sleeved on cone valve and the valve seat corresponding with this cone valve end on this Compress Spring, the side that described adjusting bolt is connected with pilot valve is provided with guiding valve, described Compress Spring is sleeved on this guiding valve, is provided with outer row mouthful on this guiding valve.
Above-mentioned a kind of piloted reducer, a side of described liquid outlet channel is connected with the valve core structure end of described pilot valve by the first pressure control structure, and described main valve plug is connected with the valve core structure end of described pilot valve by the second pressure control structure.
Above-mentioned a kind of piloted reducer, described the first pressure control structure comprises the second connecting passage that the Seal cage of a side that is arranged on described liquid outlet channel and two ends are tightly connected with described Seal cage and pilot valve respectively.
Above-mentioned a kind of piloted reducer, described the second pressure control structure comprises and is arranged on the damper of described main valve plug upper end and the 3rd connecting passage that two ends are connected with described damper and one side sealing of described cone valve respectively.
Above-mentioned a kind of piloted reducer, a side of described liquid outlet channel is also provided with the pressure gauge connection being communicated with it.
The beneficial effects of the utility model are: the liquid outlet channel of this piloted reducer is in the time bearing the outer load that makes its pressure increase; the overload protective device overflow being provided with in main valve plug cavity; fluid pressure in liquid outlet channel is remained in a stable scope; the draining passage that main valve is provided with has guaranteed that the pressure oil that spool is installed in passage releases further; effectively stablize the hydraulic coupling that of the interior liquid of liquid outlet channel; control accuracy is high, stable performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Embodiment
For making that structure characteristic of the present utility model and effect of reaching are had and further understand and be familiar with, coordinate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of piloted reducer, the pilot valve 2 that comprises main valve 1 and be arranged on this main valve 1 top and be tightly connected with it, the two ends of this pilot valve 2 are respectively equipped with sealing bolt 3 and adjusting bolt 4, in pilot valve 2, be provided with spool passage 5 is installed, in this spool is installed passage 5, be provided with valve core structure;
The valve body of main valve 1 is provided with liquid outlet channel 6; in this liquid outlet channel 6, be provided with main valve plug 7; one side of liquid outlet channel 6 is provided with feed pathway 8; as improvement of the present utility model; on main valve 1, be also provided with draining passage 9; this draining passage 9 is installed passage 5 by the first connecting passage 10 and spool and is tightly connected, and is provided with overload protective device 11 in the cavity of main valve plug 7.
Valve core structure comprises Compress Spring 12, be sleeved on cone valve 13 and the valve seat 14 corresponding with these cone valve 13 ends on this Compress Spring 12, the side that adjusting bolt 4 is connected with pilot valve 2 is provided with guiding valve 15, and Compress Spring 12 is sleeved on this guiding valve 15, is provided with outer row's mouth 16 on this guiding valve 15.
Further improve as the utility model, one side of liquid outlet channel 6 is connected with the valve core structure end of pilot valve 2 by the first pressure control structure, main valve plug 7 is connected with the valve core structure end of pilot valve 2 by the second pressure control structure, the first pressure control structure comprises the second connecting passage 18 that the Seal cage 17 of a side that is arranged on liquid outlet channel 6 and two ends are tightly connected with Seal cage 17 and pilot valve 2 respectively, the second pressure control structure comprises and is arranged on the damper 19 of main valve plug 7 upper ends and the 3rd connecting passage 20 that two ends are connected with damper 19 and cone valve 13 1 side sealings respectively.
Further, for the interior fluid pressure of liquid outlet channel 6 is monitored, also be provided with the pressure gauge connection 21 being communicated with it in a side of liquid outlet channel 6, to the fluid pressure moment monitoring in liquid outlet channel 6, guaranteed that liquid outlet channel 6 goes out the stable of hydraulic coupling by pressure gauge.
When liquid outlet channel 6 is during without pressure, this piloted reducer is often opened, pressure oil flows to liquid outlet channel 6 by feed pathway 8, pressure oil flows to the spring terminal of main valve plug 7 simultaneously, in the time that the pressure of liquid outlet channel 6 exceedes the set pressure of Compress Spring 12, cone valve 13 is opened, the oil of main valve plug 7 spring terminals flows to pilot valve 2 spools installation passages 5 through damper 19 and the 3rd connecting passage 20, spool is installed passage 5 and is back to liquid outlet channel 6 or flows back to fuel tank by the outer row's mouth 16 on guiding valve 15, now on main valve plug 7, form a pressure difference, under this poor effect, main valve plug 7 moves up opening is reduced, realize decompression to maintain the constant pressure of liquid outlet channel 6 interior liquid, on main valve 1, be also provided with draining passage 9, this draining passage 9 is installed passage 5 by the first connecting passage 10 and spool and is tightly connected, liquid outlet channel 6 is in the time bearing the outer load that makes its pressure increase, overload protective device 11 overflows that are provided with in main valve plug 7 cavitys are entered, guarantee to one step the constant of liquid outlet channel 6 interior fluid pressures, the negotiability of this reduction valve is strong, noise is low, open and shut characteristic is good, liquid outlet channel 6 fluid pressure stabilitys.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (6)
1. a piloted reducer, the pilot valve that comprises main valve and be arranged on this main valve top and be tightly connected with it, the two ends of this pilot valve are respectively equipped with sealing bolt and adjusting bolt, be provided with spool passage is installed in described pilot valve, in this spool is installed passage, are provided with valve core structure;
The valve body of described main valve is provided with liquid outlet channel, in this liquid outlet channel, is provided with main valve plug, and a side of described liquid outlet channel is provided with feed pathway, it is characterized in that:
On described main valve, be also provided with draining passage, this draining passage is installed channel seal by the first connecting passage and described spool and is connected, and in the cavity of described main valve plug, is provided with overload protective device.
2. a kind of piloted reducer according to claim 1, it is characterized in that, described valve core structure comprises Compress Spring, be sleeved on cone valve and the valve seat corresponding with this cone valve end on this Compress Spring, the side that described adjusting bolt is connected with pilot valve is provided with guiding valve, described Compress Spring is sleeved on this guiding valve, is provided with outer row mouthful on this guiding valve.
3. a kind of piloted reducer according to claim 1, it is characterized in that, one side of described liquid outlet channel is connected with the valve core structure end of described pilot valve by the first pressure control structure, and described main valve plug is connected with the valve core structure end of described pilot valve by the second pressure control structure.
4. a kind of piloted reducer according to claim 3, it is characterized in that, described the first pressure control structure comprises the second connecting passage that the Seal cage of a side that is arranged on described liquid outlet channel and two ends are tightly connected with described Seal cage and pilot valve respectively.
5. a kind of piloted reducer according to claim 3, it is characterized in that, described the second pressure control structure comprises and is arranged on the damper of described main valve plug upper end and the 3rd connecting passage that two ends are connected with described damper and one side sealing of described cone valve respectively.
6. according to a kind of piloted reducer described in any one in claim 1 to 5, it is characterized in that, a side of described liquid outlet channel is also provided with the pressure gauge connection being communicated with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661883.1U CN203614845U (en) | 2013-10-23 | 2013-10-23 | Pilot type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661883.1U CN203614845U (en) | 2013-10-23 | 2013-10-23 | Pilot type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614845U true CN203614845U (en) | 2014-05-28 |
Family
ID=50767492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320661883.1U Expired - Fee Related CN203614845U (en) | 2013-10-23 | 2013-10-23 | Pilot type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614845U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763822A (en) * | 2015-04-23 | 2015-07-08 | 圣邦集团有限公司 | Load maintaining valve |
| CN108895194A (en) * | 2018-09-07 | 2018-11-27 | 阿里斯顿热能产品(中国)有限公司 | Prevent the device that liquid is persistently revealed |
| CN110657269A (en) * | 2019-10-30 | 2020-01-07 | 天津市中重科技工程有限公司 | Novel pressure reducing overflow valve |
-
2013
- 2013-10-23 CN CN201320661883.1U patent/CN203614845U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763822A (en) * | 2015-04-23 | 2015-07-08 | 圣邦集团有限公司 | Load maintaining valve |
| CN104763822B (en) * | 2015-04-23 | 2017-02-01 | 圣邦集团有限公司 | Load maintaining valve |
| CN108895194A (en) * | 2018-09-07 | 2018-11-27 | 阿里斯顿热能产品(中国)有限公司 | Prevent the device that liquid is persistently revealed |
| CN110657269A (en) * | 2019-10-30 | 2020-01-07 | 天津市中重科技工程有限公司 | Novel pressure reducing overflow valve |
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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: 20140528 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |