CN104712798B - Combined pressure relief valve - Google Patents
Combined pressure relief valve Download PDFInfo
- Publication number
- CN104712798B CN104712798B CN201310689680.8A CN201310689680A CN104712798B CN 104712798 B CN104712798 B CN 104712798B CN 201310689680 A CN201310689680 A CN 201310689680A CN 104712798 B CN104712798 B CN 104712798B
- Authority
- CN
- China
- Prior art keywords
- relief valve
- valve
- main oil
- oil gallery
- valve element
- 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.)
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Classifications
-
- 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, more particularly, to a kind of combination type relief valve.
Background technology
Relief valve is generally mounted on the equipment of closed system or pipeline, protection equipment and pipeline, prevents accident.
In prior art, when pressure release, traditional single-stage relief valve only has one-level pressure release to the master cylinder of hydraulic press, its pressure release speed
Slowly, cause operating rate slow, work efficiency is low, while temperature is raised soon, increased the energy resource consumption of cooling system.
The content of the invention
The problem to be solved in the present invention is the deficiency for existing single-stage hydraulic valve, there is provided a kind of secondary groups close depressurized system
And the combination type relief valve of the manual pressure release of supplement.
To solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of combination type relief valve, including valve body a, side of the valve body is provided with high pressure hydraulic fluid port, main drain tap and auxiliary
Drain tap, the body top is provided with control port, and the valve inner is provided with main oil gallery and auxiliary oil duct, the main oil gallery connection
The high pressure hydraulic fluid port and main drain tap, the auxiliary oil duct connects the main oil gallery and auxiliary drain tap, and being provided with the main oil gallery can
The valve element to control main oil gallery circulation or close for moving up and down, is provided with piston, the valve between the valve element and control port
Core inner is provided with the first steel ball, second spring seat and the first spring base, and second spring seat, institute are connected with below first steel ball
State and the first spring base is connected with below second spring seat, the horizontal stroke that can be blocked or be decontroled by it is provided with the both sides of first steel ball
To the passage through the valve element.
Further, the valve body is additionally provided with manual relief valve, and the control auxiliary oil is provided with inside the manual relief valve
Second steel ball of road folding.
Further, the valve element top is in truncated cone, and the main oil gallery longitudinal section is in "convex" shaped.
Further, the main oil gallery corner is provided with seal line, and the inclined-plane at the top of the valve element can be tight with seal line
Contact is separated, to control the main oil gallery closure or circulate.
Further, the piston base contacts with the first steel ball of the valve core inside.
The present invention to have the advantage that and be embodied in the following aspects with good effect：
（1）Pressure release speed is accelerated, work efficiency is substantially increased.
（2）Temperature rise speed is reduced, while reducing the energy resource consumption of cooling system.
（3）Shorten the working cycle.
（4）Valve body product is reduced, Operation and maintenance are convenient.
（5）Manual decompression function can be in particular cases taken in hydraulic control failure or power-off etc..
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：
Specific embodiment
As shown in figure 1, a kind of combination type relief valve according to the present invention, including 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, the top of valve body 7 is provided with control port 8, and inside valve body 7 main oil gallery is provided with
11 and auxiliary oil duct 12, the connection high pressure of main oil gallery 11 hydraulic fluid port 13 and main drain tap 14, the connection main oil gallery 11 of auxiliary oil duct 12 and auxiliary draining
The valve element 5 to control main oil gallery circulation or close moving up and down, valve element 5 and control port 8 are provided with mouth 15, main oil gallery 11
Between be provided with piston 6, the first steel ball 3, the spring base 1 of second spring seat 2 and first are provided with inside the valve element 5, under the first steel ball 3
Face is connected with second spring seat 2, and second spring seat 2 is connected with the first spring base 1 below, and being provided with the both sides of the first steel ball 3 can
That what is blocked or decontroled by it extends transversely through the passage 10 in valve element 5.Valve body 7 is additionally provided with manual relief valve 4, in manual relief valve 4
Portion is provided with the second steel ball 9 of control auxiliary oil duct 12 folding；The top of valve element 5 is in truncated cone, and the longitudinal section of main oil gallery 11 is in " convex " word
Shape, the corner of the main oil gallery 11 is provided with seal line 16, and the inclined-plane at the top of the valve element 5 can be in close contact with seal line 16 or divide
From closing or circulate to control main oil gallery 11；The bottom of piston 6 contacts with the first steel ball 3 inside valve element 5.In addition, main draining
Mouth 14 and auxiliary drain tap 15 do not connect fuel tank in outer portion.
The course of work of this example：
When relief valve does not work, under the support of the first spring base 1, the top of valve element 5 is in the inclined-plane and main oil of the frustum of a cone
The seal line 16 in road 11 is in close contact, and under the support of second spring seat 2, passage 10 is firmly blocked by the first steel ball 3, now high
Force feed cannot be flowed in the fuel tank being connected with main drain tap 14.
Ultrahigh pressure vessel can experience following two-stage pressure leak process in pressure release using the combination type relief valve：
One-level pressure release.Control oil is flowed into from control port 8, promotes piston 6 to move down, and now the thrust of piston 6 is more than
Back pressure of the hydraulic oil to the first steel ball 3, and during less than 5 back pressure of valve element, that is, promoted the first steel ball 3 to move down, the quilt of passage 10
Open, super high pressure oil flow to main drain tap 14, flows back to fuel tank by passage 10.
Two grades of pressure releases.With being gradually reduced for high pressure oil pressure, hydraulic oil also declines therewith to the active force of valve element 5, when
When the thrust of piston 6 is more than the back pressure of valve element 5, valve element 5 is moved down in the presence of piston 6, and the top of valve element 5 is in the frustum of a cone
Inclined-plane is separated with the seal line 16 of main oil gallery 11, and two grades of pressure releases start, and super high pressure oil Jing main oil gallery 11 flow to main drain tap 14, stream
Oil sump tank.Now, inside relief valve, the flow increase of super high pressure oil, circulating resistance reduce, pressure release speed is accelerated, while warm
Spending elevated speed is reduced.
Additionally, in hydraulic control failure or power-off etc. in particular cases, manually manual decompression function can be started by relief valve 4
Complete pressure release.While screwing out manual relief valve 4, the auxiliary oil duct 12 of the internal control of the second steel ball 9 is changed into beating from closed mode
Open state, auxiliary oil duct 12 is opened, and super high pressure oil Jing main oil gallery 11 flow to auxiliary oil duct 12 and flow to auxiliary drain tap 15 again, equally flows back to oil
Case, completes the process of manual pressure release.
One embodiment of the present of invention has been described in detail above, but the content is only the preferable enforcement of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng, all should still belong to the present invention patent covering scope within.
Claims (5)
1. a kind of combination type relief valve, it is characterised in that：The combination type relief valve includes valve body（7）, the valve body（7）One
Individual side is provided with high pressure hydraulic fluid port（13）, main drain tap（14）With auxiliary drain tap（15）, the valve body（7）Top is provided with control port
（8）, the valve body（7）Inside is provided with main oil gallery（11）With auxiliary oil duct（12）, the main oil gallery（11）Connect the high pressure hydraulic fluid port
（13）With main drain tap（14）, the auxiliary oil duct（12）Connect the main oil gallery（11）With auxiliary drain tap（15）, the main oil gallery
（11）Inside being provided with can move up and down to control the valve element of main oil gallery circulation/closure（5）, the valve element（5）And control port（8）It
Between be provided with piston（6）, the valve element（5）Inside is provided with the first steel ball（3）, second spring seat（2）With the first spring base（1）, institute
State the first steel ball（3）Second spring seat is connected with below（2）, the second spring seat（2）The first spring base is connected with below
（1）, in first steel ball（3）Both sides be provided with extending transversely through in the valve element of being blocked by it or be decontroled（5）Passage
（10）.
2. combination type relief valve according to claim 1, it is characterised in that：The valve body（7）It is additionally provided with manual relief valve
（4）, the manual relief valve（4）Inside is provided with the control auxiliary oil duct（12）Second steel ball of folding（9）.
3. combination type relief valve according to claim 1 and 2, it is characterised in that：The valve element（5）Top is in the frustum of a cone
Shape, the main oil gallery（11）Longitudinal section is in "convex" shaped.
4. combination type relief valve according to claim 3, it is characterised in that：The main oil gallery（11）Corner is provided with sealing
Line（16）, the valve element（5）The inclined-plane and seal line at top（16）Can be in close contact or separate.
5. combination type relief valve according to claim 1 and 2, it is characterised in that：The piston（6）Bottom and the valve element
（5）The first internal steel ball（3）Contact.
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 CN104712798A (en) | 2015-06-17 |
| CN104712798B true CN104712798B (en) | 2017-04-19 |
Family
ID=53412387
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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Citations (6)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276073A (en) * | 2009-05-27 | 2010-12-09 | Toyota Motor Corp | Relief valve |
-
2013
- 2013-12-12 CN CN201310689680.8A patent/CN104712798B/en active Active
Patent Citations (6)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104712798A (en) | 2015-06-17 |
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