CN104712798A - Combined pressure relief valve - Google Patents
Combined pressure relief valve Download PDFInfo
- Publication number
- CN104712798A CN104712798A CN201310689680.8A CN201310689680A CN104712798A CN 104712798 A CN104712798 A CN 104712798A CN 201310689680 A CN201310689680 A CN 201310689680A CN 104712798 A CN104712798 A CN 104712798A
- Authority
- CN
- China
- Prior art keywords
- decompression valves
- main oil
- spool
- oil gallery
- steel ball
- 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.)
- Granted
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
- F16K17/082—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage with piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
Abstract
The invention provides a combined pressure relief valve comprising a valve element, a manual pressure relief valve, a main oil duct, an auxiliary oil duct, spring bases and the like. Primary pressure relief and secondary pressure relief can be achieved, and manual pressure relief can be achieved under the special circumstances such as hydraulic control failures or power failures. The combined pressure relief valve is implemented, so that when a main oil cylinder of a hydraulic machine relieves pressure, the pressure relief speed is increased, the working period is shortened, the size of the valve is reduced, and operation and maintenance are convenient.
Description
Technical field
The invention belongs to Hydraulic Power Transmission System control field, especially relate to a kind of combined type Decompression valves.
Background technique
On the equipment that Decompression valves is generally installed on locking system or pipeline, proterctive equipment and pipeline, prevent accident.In the prior art, the master cylinder of hydraulic press is when pressure release, and traditional single-stage Decompression valves only has one-level pressure release, and its pressure release speed is slow, and cause operating rate slow, working efficiency is low, and simultaneous temperature raises fast, adds the energy consumption of cooling system.
Summary of the invention
The problem to be solved in the present invention is the deficiency for existing single-stage hydraulic valve, provides a kind of secondary to combine depressurized system and supplements the combined type Decompression valves of manual pressure release.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of combined type Decompression valves, comprise valve body, a side of described valve body is provided with high pressure hydraulic fluid port, main drain tap and auxiliary drain tap, described body top is provided with control port, described valve inner is provided with main oil gallery and auxiliary oil duct, described main oil gallery connects described high pressure hydraulic fluid port and main drain tap, described auxiliary oil duct connects described main oil gallery and auxiliary drain tap, be provided with moving up and down to control main oil gallery circulation or closed spool in described main oil gallery, piston is provided with between described spool and control port, described valve core inside is provided with the first steel ball, second spring seat and the first spring seat, the second spring seat is connected with below described first steel ball, the first spring seat is connected with below described second spring seat, the horizontal passage through described spool that can blocked by it or decontrol is provided with in the both sides of described first steel ball.
Further, described valve body is also provided with manual Decompression valves, and described manual Decompression valves inside is provided with the second steel ball controlling described auxiliary oil duct folding.
Further, described spool top is truncated cone, and described main oil gallery longitudinal section is in " convex " font.
Further, described main oil gallery corner is provided with potted line, and the inclined-plane at described spool top and potted line can close contacts or be separated, to control the closed or circulation of described main oil gallery.
Further, described piston base contacts with the first steel ball of described valve core inside.
The advantage that the present invention has and good effect are embodied in the following aspects:
(1) accelerate pressure release speed, substantially increase working efficiency.
(2) reduce temperature rise speed, reduce the energy consumption of cooling system simultaneously.
(3) operation cycle is shortened.
(4) reduce valve body to amass, Operation and maintenance are convenient.
(5) in particular cases manual decompression function can be taked in hydraulic control inefficacy or power-off etc.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure:
Embodiment
As shown in Figure 1, a kind of combined type Decompression valves that the present invention relates to, comprise valve body 7, a side of valve body 7 is provided with high pressure hydraulic fluid port 13, main drain tap 14 and auxiliary drain tap 15, valve body 7 top is provided with control port 8, valve body 7 inside is provided with main oil gallery 11 and auxiliary oil duct 12, main oil gallery 11 connects high pressure hydraulic fluid port 13 and main drain tap 14, auxiliary oil duct 12 connects main oil gallery 11 and auxiliary drain tap 15, be provided with moving up and down to control main oil gallery circulation or closed spool 5 in main oil gallery 11, piston 6 is provided with between spool 5 and control port 8, described spool 5 inside is provided with the first steel ball 3, second spring seat 2 and the first spring seat 1, first steel ball 3 is connected with the second spring seat 2 below, second spring seat 2 is connected with the first spring seat 1 below, the horizontal path 10 through spool 5 that can blocked by it or decontrol is provided with in the both sides of the first steel ball 3.Valve body 7 is also provided with manual Decompression valves 4, and manual Decompression valves 4 inside is provided with the second steel ball 9 controlling the folding of auxiliary oil duct 12; Spool 5 top is truncated cone, and main oil gallery 11 longitudinal section is in " convex " font, and described main oil gallery 11 corner is provided with potted line 16, and the inclined-plane at described spool 5 top and potted line 16 can close contacts or be separated, to control the closed or circulation of main oil gallery 11; Contact with the first steel ball 3 of spool 5 inside bottom piston 6.In addition, main drain tap 14 is connected fuel tank in portion outside respectively with auxiliary drain tap 15.
The working procedure of this example:
When Decompression valves does not work, under the support of the first spring seat 1, spool 5 top is the inclined-plane of circular cone and potted line 16 close contact of main oil gallery 11, under the support of the second spring seat 2, path 10 is firmly blocked by the first steel ball 3, and now high pressure oil cannot flow in the fuel tank be connected with main drain tap 14.
Ultrahigh pressure vessel, when pressure release, adopts this combined type Decompression valves can experience following two-stage pressure leak process:
One-level pressure release.Control oil to flow into from control port 8, promote piston 6 to move down, now the thrust of piston 6 is greater than the back pressure of high pressure oil to the first steel ball 3, and when being less than spool 5 back pressure, namely promoted the first steel ball 3 to move down, path 10 is opened, and super high pressure oil flow to main drain tap 14 by path 10, flows back to fuel tank.
Secondary pressure release.Along with the decline gradually of high pressure oil pressure, the active force of high pressure oil to spool 5 also declines thereupon, when the thrust of piston 6 is greater than the back pressure of spool 5, spool 5 moves down under the effect of piston 6, spool 5 top is that the inclined-plane of circular cone is separated with the potted line 16 of main oil gallery 11, secondary pressure release starts, and super high pressure oil flow to main drain tap 14 through main oil gallery 11, flows back to fuel tank.Now, inner at Decompression valves, the flow of super high pressure oil increases, circulating resistance reduces, pressure release speed is accelerated, and the speed that simultaneous temperature raises obtains reduction.
In addition, in hydraulic control inefficacy or power-off etc. in particular cases, start manual decompression function by manual Decompression valves 4 and complete pressure release.While screwing out manual Decompression valves 4, the auxiliary oil duct 12 that the second inner steel ball 9 controls becomes open mode from closed condition, and auxiliary oil duct 12 is opened, and super high pressure oil flow to auxiliary oil duct 12 through main oil gallery 11 and flow to auxiliary drain tap 15 again, flow back to fuel tank equally, complete the process of manual pressure release.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (5)
1. a combined type Decompression valves, it is characterized in that: described combined type Decompression valves comprises valve body (7), a side of described valve body (7) is provided with high pressure hydraulic fluid port (13), main drain tap (14) and auxiliary drain tap (15), described valve body (7) top is provided with control port (8), described valve body (7) inside is provided with main oil gallery (11) and auxiliary oil duct (12), described main oil gallery (11) connects described high pressure hydraulic fluid port (13) and main drain tap (14), described auxiliary oil duct (12) connects described main oil gallery (11) and auxiliary drain tap (15), the spool (5) that can move up and down to control main oil gallery circulation/closed is provided with in described main oil gallery (11), piston (6) is provided with between described spool (5) and control port (8), described spool (5) inside is provided with the first steel ball (3), second spring seat (2) and the first spring seat (1), described first steel ball (3) is connected with the second spring seat (2) below, described second spring seat (2) is connected with the first spring seat (1) below, the horizontal passage (10) through described spool (5) that can blocked by it or decontrol is provided with in the both sides of described first steel ball (3).
2. combined type Decompression valves according to claim 1, is characterized in that: described valve body (7) is also provided with manual Decompression valves (4), and described manual Decompression valves (4) inside is provided with the second steel ball (9) controlling the folding of described auxiliary oil duct (12).
3. combined type Decompression valves according to claim 1 and 2, is characterized in that: described spool (5) top is truncated cone, and described main oil gallery (11) longitudinal section is in " convex " font.
4. combined type Decompression valves according to claim 3, is characterized in that: described main oil gallery (11) corner is provided with potted line (16), and the inclined-plane at described spool (5) top and potted line (16) can close contacts or be separated.
5. combined type Decompression valves according to claim 1 and 2, is characterized in that: described piston (6) bottom contacts with first steel ball (3) of described spool (5) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689680.8A CN104712798B (en) | 2013-12-12 | 2013-12-12 | Combined pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689680.8A CN104712798B (en) | 2013-12-12 | 2013-12-12 | Combined pressure relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104712798A true CN104712798A (en) | 2015-06-17 |
| CN104712798B CN104712798B (en) | 2017-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310689680.8A Active CN104712798B (en) | 2013-12-12 | 2013-12-12 | Combined pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712798B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533482A (en) * | 2018-06-15 | 2018-09-14 | 杭州众拓科技有限公司 | Variable quantity and pressure plunger pump |
| CN110185622A (en) * | 2019-06-24 | 2019-08-30 | 南通市红星空压机配件制造有限公司 | Frequency conversion screw air compressor intake valve |
| CN115199631A (en) * | 2022-07-26 | 2022-10-18 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896845A (en) * | 1974-06-13 | 1975-07-29 | Gen Motors Corp | Accumulator charging and relief valve |
| CN2258562Y (en) * | 1996-04-05 | 1997-07-30 | 柴焱 | T-type ultrahigh pressure hydraulic control unloader valve |
| CN2730262Y (en) * | 2004-08-16 | 2005-10-05 | 齐炳奎 | Safety pressure reducing valve of pressure cooker |
| JP2010276073A (en) * | 2009-05-27 | 2010-12-09 | Toyota Motor Corp | Relief valve |
| CN201982396U (en) * | 2011-04-22 | 2011-09-21 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Super-pressure hydraulic control check valve |
| CN203322413U (en) * | 2013-06-21 | 2013-12-04 | 泸州国邦机械有限公司 | Two-stage pressure unloading valve |
| CN203641603U (en) * | 2013-12-12 | 2014-06-11 | 天津帝广机电设备有限公司 | Combination-type pressure relief valve |
-
2013
- 2013-12-12 CN CN201310689680.8A patent/CN104712798B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896845A (en) * | 1974-06-13 | 1975-07-29 | Gen Motors Corp | Accumulator charging and relief valve |
| CN2258562Y (en) * | 1996-04-05 | 1997-07-30 | 柴焱 | T-type ultrahigh pressure hydraulic control unloader valve |
| CN2730262Y (en) * | 2004-08-16 | 2005-10-05 | 齐炳奎 | Safety pressure reducing valve of pressure cooker |
| JP2010276073A (en) * | 2009-05-27 | 2010-12-09 | Toyota Motor Corp | Relief valve |
| CN201982396U (en) * | 2011-04-22 | 2011-09-21 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Super-pressure hydraulic control check valve |
| CN203322413U (en) * | 2013-06-21 | 2013-12-04 | 泸州国邦机械有限公司 | Two-stage pressure unloading valve |
| CN203641603U (en) * | 2013-12-12 | 2014-06-11 | 天津帝广机电设备有限公司 | Combination-type pressure relief valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533482A (en) * | 2018-06-15 | 2018-09-14 | 杭州众拓科技有限公司 | Variable quantity and pressure plunger pump |
| CN108533482B (en) * | 2018-06-15 | 2023-08-08 | 欧盾科技有限公司 | Variable pressure variable plunger pump |
| CN110185622A (en) * | 2019-06-24 | 2019-08-30 | 南通市红星空压机配件制造有限公司 | Frequency conversion screw air compressor intake valve |
| CN115199631A (en) * | 2022-07-26 | 2022-10-18 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
| CN115199631B (en) * | 2022-07-26 | 2023-09-19 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104712798B (en) | 2017-04-19 |
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