CN2646449Y - Hydraulic control relief valve - Google Patents
Hydraulic control relief valve Download PDFInfo
- Publication number
- CN2646449Y CN2646449Y CN 200320113055 CN200320113055U CN2646449Y CN 2646449 Y CN2646449 Y CN 2646449Y CN 200320113055 CN200320113055 CN 200320113055 CN 200320113055 U CN200320113055 U CN 200320113055U CN 2646449 Y CN2646449 Y CN 2646449Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- gland
- hydraulic control
- throttling sheet
- 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 - Lifetime
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Abstract
The utility model discloses a hydraulic controlled decompression valve which is characterized in that: the utility model comprises a valve body whose two ends are provided with end covers and press covers. The valve body is provided with control piston whose ends are provided with an unilateral valve; the valve body is provided with a control hydraulic fluid port that is communicated with the inner cavity of the valve body; the valve body is provided with an oil outlet; the cavity of he press cover is provided with a throttle piece group that is connected with the unidirectional valve in series. Since the utility model adopts the structure of control valve and throttle piece group, the utility model can effectively prevent impact of discharge produced by high pressure, in particular hyperpressure hydraulic system to realize stable decompression. At the same time, the decompression speed that reduced along the reduced system pressure is accelerated through the seam between the excircle surface of the throttle piece and the inner wall of the cavity of the press cover in the process of decompression. The utility model can be adopted in hydraulic pressure as well as barometric pressure.
Description
Technical field
The utility model relates to a kind of valve, especially relates to a kind of hydraulic control pressure-relief valve.
Background technique
At present, Chang Yong release mode is manual release.By the opening degree control release speed of manual tune needle, stress-relief process is artificial control, and poor repeatability, and complex operation can't realize automatic control.
Summary of the invention
The purpose of this utility model just be to provide a kind of simple in structure, can realize the hydraulic control pressure-relief valve of control automatically.
The purpose of this utility model can realize by following measure:
The utility model comprises valve body, be respectively arranged with end cap that is connected with valve body and the gland of being with hollow cavity at the valve body two ends, in valve body, be provided with control piston, be provided with one-way valve in the control piston end, on valve body, offer the control port that is connected with body cavity, on valve body, be positioned at the one-way valve outlet port and offer oil outlet, in the gland hollow cavity, be provided with the throttling sheet group that is in series with one-way valve, between the hollow cavity inwall of each throttling sheet and gland the slit is arranged in the throttling sheet group, offer throttle orifice on each throttling sheet in throttling sheet group, the throttling sheet group end in the gland hollow cavity is provided with throttling sheet Returnning spring.
Valve body in the utility model is connected by bolt with gland and end cap.Valve body also can be by being threaded or adopting other suitable Placements with gland and end cap.Control port is two.Certainly also can adopt one or more.Be provided with valve core reseting spring in the one-way valve end.Throttle orifice on each throttling sheet is one, and throttle orifice extends to taper to the end.Throttle orifice in the throttling sheet group on each throttling sheet is eccentric to be communicated with.In the gland hollow cavity, be provided with filter sheet.Throttle orifice diameter on the throttling sheet is greater than the filtering hole diameter on the filter sheet.
The utility model is owing to adopt the structure that control valve and throttling sheet group are set, and makes it effectively to prevent that the earial drainage that high pressure particularly produces during the Superhigh Pressure Hydraulic System release from impacting, and accomplishes steady release.Simultaneously, along with the reduction of stress-relief process oil pressure, accelerated to reduce the release speed that slows down because of system pressure by the slit between throttling sheet periphery and gland hollow cavity inwall.The utility model not only also can be used for the air pressure aspect applicable to hydraulic pressure.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
The utility model is done with detailed description below in conjunction with drawings and Examples:
As shown in the figure, the utility model comprises valve body 1, be respectively arranged with end cap 8 that is connected with valve body 1 and the gland 6 of being with hollow cavity at valve body 1 two ends, in valve body 1, be provided with control piston 2, be provided with one-way valve 3 in control piston 2 ends, on valve body 1, offer the control port 9 that is connected with body cavity, on valve body 1, be positioned at one-way valve 3 outlet ports and offer oil outlet 10, in gland 6 hollow cavities, be provided with the throttling sheet group 4 that is in series with one-way valve 3, between the hollow cavity inwall of each throttling sheet and gland 6 slit is arranged in the throttling sheet group 4, offer throttle orifice on each throttling sheet in throttling sheet group 4, throttling sheet group 4 ends in gland 6 hollow cavities are provided with throttling sheet Returnning spring 5.Valve body 1 and gland 6 and end cap 8 are connected by bolt.Valve body 1 also can be by being threaded with gland 6 and end cap 8.Control port 9 is two, and wherein control is oily into and out of hydraulic fluid port respectively.Be provided with valve core reseting spring in one-way valve 3 ends.Throttle orifice on each throttling sheet is one, and throttle orifice extends to taper to the end.Throttle orifice in the throttling sheet group on each throttling sheet is eccentric to be communicated with.In gland 6 hollow cavities, be provided with filter sheet 7.Throttle orifice diameter on the throttling sheet is greater than the filtering hole diameter on the filter sheet 7.
Working principle of the present utility model is as follows: the liquid resistance that the utility model is composed in series by multistage orifice restriction sheet can prevent effectively that the earial drainage that high pressure particularly produces during the Superhigh Pressure Hydraulic System release from impacting, and accomplishes steady release.Control piston in the hydraulic control pressure-relief valve backs down one-way valve under the effect of control oil, open discharge channel, makes high pressure oil in the hydraulic system through multistage orifice restriction sheet, one-way valve, valve body, to oil outlet, and release begins.Carrying out along with stress-relief process, system pressure reduces gradually, when multistage orifice restriction sheet hyperbaric chamber one side's pressure drops to thrust less than its opposite control piston, the controlled piston jack-up of orifice restriction sheet group, the pressure oil of the earial drainage sideshake through between throttling sheet external diameter and gland hole simultaneously flows out and causes liquid to hinder to reduce, and accelerated the release speed that has slowed down because of the reduction of system pressure.Concretely: a plurality of orifice restriction sheets are housed in one-way valve the place ahead, and throttling sheet group is pressed on the nonreturn valve core top of chamber and with nonreturn valve core a bit of gap is arranged by spring force and hydraulic coupling, and throttling sheet group and gland hole wall have suitable gap.The nonreturn valve core top is opened the oil that a translot is convenient in the throttling sheet aperture and is flowed out.When moving, control piston nonreturn valve core jack-up can be touched throttling sheet group, when piston thrust can make the gap of pressure oil through between throttling sheet external diameter and gland hole wall flow to valve body to oil outlet throttling sheet group jack-up during greater than the hydraulic coupling on the throttling sheet.
Claims (9)
1, a kind of hydraulic control pressure-relief valve, it is characterized in that: it comprises valve body (1), be respectively arranged with end cap (8) that is connected with valve body (1) and the gland (6) of being with hollow cavity at valve body (1) two ends, in valve body (1), be provided with control piston (2), be provided with one-way valve (3) in control piston (2) end, on valve body (1), offer the control port (9) that is connected with body cavity, on valve body (1), be positioned at one-way valve (3) outlet port and offer oil outlet (10), in gland (6) hollow cavity, be provided with the throttling sheet group (4) that is in series with one-way valve (3), between the hollow cavity inwall of each throttling sheet and gland (6) slit is arranged in the throttling sheet group (4), offer throttle orifice on each throttling sheet in throttling sheet group (4), throttling sheet group (4) end in gland (6) hollow cavity is provided with throttling sheet Returnning spring (5).
2, hydraulic control pressure-relief valve according to claim 1 is characterized in that: described valve body (1) is connected by bolt with gland (6) and end cap (8).
3, hydraulic control pressure-relief valve according to claim 1 is characterized in that: described valve body (1) and gland (6) and end cap (8) are by being threaded.
4, hydraulic control pressure-relief valve according to claim 1 is characterized in that: described control port (9) is two.
5, according to claim 1 or 2 or 3 or 4 described hydraulic control pressure-relief valves, it is characterized in that: be provided with valve core reseting spring in described one-way valve (3) end.
6, according to claim 1 or 2 or 3 or 4 described hydraulic control pressure-relief valves, it is characterized in that: the throttle orifice on described each throttling sheet is one, and throttle orifice extends to taper to the end.
7, according to claim 1 or 2 or 3 or 4 described hydraulic control pressure-relief valves, it is characterized in that: the throttle orifice in the described throttling sheet group on each throttling sheet is eccentric to be communicated with.
8, according to claim 1 or 2 or 3 or 4 described hydraulic control pressure-relief valves, it is characterized in that: in described gland (6) hollow cavity, be provided with filter sheet (7).
9, hydraulic control pressure-relief valve according to claim 8 is characterized in that: the throttle orifice diameter on the described throttling sheet is greater than the filtering hole diameter on the filter sheet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113055 CN2646449Y (en) | 2003-10-17 | 2003-10-17 | Hydraulic control relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113055 CN2646449Y (en) | 2003-10-17 | 2003-10-17 | Hydraulic control relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646449Y true CN2646449Y (en) | 2004-10-06 |
Family
ID=34305243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320113055 Expired - Lifetime CN2646449Y (en) | 2003-10-17 | 2003-10-17 | Hydraulic control relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646449Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470833A (en) * | 2013-09-16 | 2013-12-25 | 四川制动科技股份有限公司 | Pressure maintenance mechanism of control valve of quick truck |
| CN103912536A (en) * | 2014-04-01 | 2014-07-09 | 嘉善海力达工具有限公司 | Feedback compensation type hydraulic unloading valve |
| CN105240580A (en) * | 2015-11-12 | 2016-01-13 | 郑州磨料磨具磨削研究所有限公司 | Ultrahigh pressure multi-stage variable pressure relief valve |
| CN106640812A (en) * | 2016-12-13 | 2017-05-10 | 四川航空工业川西机器有限责任公司 | Ultrahigh pressure relief valve |
-
2003
- 2003-10-17 CN CN 200320113055 patent/CN2646449Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470833A (en) * | 2013-09-16 | 2013-12-25 | 四川制动科技股份有限公司 | Pressure maintenance mechanism of control valve of quick truck |
| CN103470833B (en) * | 2013-09-16 | 2015-12-23 | 四川制动科技股份有限公司 | A kind of pressure maintenance mechanism of control valve of quick truck |
| CN103912536A (en) * | 2014-04-01 | 2014-07-09 | 嘉善海力达工具有限公司 | Feedback compensation type hydraulic unloading valve |
| CN105240580A (en) * | 2015-11-12 | 2016-01-13 | 郑州磨料磨具磨削研究所有限公司 | Ultrahigh pressure multi-stage variable pressure relief valve |
| CN106640812A (en) * | 2016-12-13 | 2017-05-10 | 四川航空工业川西机器有限责任公司 | Ultrahigh pressure relief valve |
| CN106640812B (en) * | 2016-12-13 | 2018-07-13 | 四川航空工业川西机器有限责任公司 | Super-pressure pressure-relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131017 Granted publication date: 20041006 |