CN107489799A - A kind of efficient precursor overflow valve - Google Patents
A kind of efficient precursor overflow valve Download PDFInfo
- Publication number
- CN107489799A CN107489799A CN201710771516.XA CN201710771516A CN107489799A CN 107489799 A CN107489799 A CN 107489799A CN 201710771516 A CN201710771516 A CN 201710771516A CN 107489799 A CN107489799 A CN 107489799A
- Authority
- CN
- China
- Prior art keywords
- valve
- main valve
- valve body
- precursor overflow
- main
- 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
- 239000002243 precursor Substances 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- F16K17/10—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 auxiliary valve for fluid operation of the main valve
-
- 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
- F16K17/06—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 adjusting the opening pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a kind of efficient precursor overflow valve, the precursor overflow valve includes main valve body and pilot valve body, it is fixedly connected between main valve body and the pilot valve body by screw, main valve housing is provided with the main valve body, main valve plug is provided with the main valve housing, is provided with guide valve bushing and pressure-regulating device in the pilot valve body, the pilot valve body bottom is provided with shrinkage pool, the top of the main valve housing is located in shrinkage pool, is sealed between the main valve housing and shrinkage pool by radial sealing mechanism.The present invention is compact-sized, and sealing is greatly improved, and the response opened and closed is very fast.
Description
Technical field
The present invention relates to field of hydraulic control, and in particular to a kind of efficient precursor overflow valve.
Background technology
Referring to Fig. 1, the inside of main valve body 1 ' of existing precursor overflow valve fills main valve housing 3 ', the outside of main valve housing 3 ' and main valve body
1 ' sealing is responsible for by sealing ring 16 ', is radial seal, and the sealing of the upper surface of main valve housing 3 ' and pilot valve body 4 ' is by sealing ring
11 ' are responsible for, and are axial seal, are connected by screw between main valve body 1 ' and pilot valve body 4 ', to offset sealing ring 11 ' during compression
Elastic force, actual thrust can reduce, and especially hold in high-pressure work under having shock loading between main valve body 1 ' and pilot valve body 4 '
Easy oil leakage.
In addition, the guide valve seat 8 ' of existing precursor overflow valve is cylindrical and the endoporus of pilot valve body 4 ' is interference fit, so assemble
It need to be cooled down with liquid nitrogen, it is cumbersome.
In addition, being typically provided damping hole 7 ' on the sleeve 6 ' of existing precursor overflow valve, processing is inconvenient, sleeve 6 ' and pilot valve
The gap of body 4 ' coordinates, and is blocked by elastic spring 5 ', guide valve seat 8 ' also blocks by elastic spring 9 ', and structure is more open.
In addition, existing precursor overflow valve is generally by spring 12 ', spring base 13 ', swivel nut 14 ', screw rod 15 ', pilot valve
The parts such as core 10 ' form pressure-regulating device, and swivel nut 14 ' is arranged on the port of pilot valve body 4 ', and screw rod 15 ' passes through the position of swivel nut 14 '
In in the internal cavity of pilot valve body 4 ', and spring base 13 ' is arranged on the end of screw rod 15 ', and spring 12 ' is placed on spring base 13 ', is led
The one end of valve element 10 ' is connected with spring 12 ', and the other end is connected with guide valve seat 8 ', and this structure considerably increases precursor overflow valve
Axial length, precursor overflow valve is caused to use very inconvenient.
In addition, the main valve plug 2 ' of existing precursor overflow valve is that face contacts sealing, the sound of opening and closing with main valve housing 3 '
Should be slower.
The content of the invention
The present invention is in order to solve the above problems, so as to provide a kind of efficient precursor overflow valve.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of efficient precursor overflow valve, the precursor overflow valve include main valve body and pilot valve body, the main valve body and lead
It is fixedly connected between valve body by screw, main valve housing is provided with the main valve body, main valve plug is provided with the main valve housing, it is described to lead
Guide valve bushing and pressure-regulating device are provided with valve body, the pilot valve body bottom is provided with shrinkage pool, and the top of the main valve housing is positioned at recessed
In hole, sealed between the main valve housing and shrinkage pool by radial sealing mechanism.
In a preferred embodiment of the invention, the guide valve bushing is detachably positioned in pilot valve body entirely through screw thread
Interior one end.
In a preferred embodiment of the invention, damper and screen pack are provided with the guide valve bushing.
In a preferred embodiment of the invention, the pressure-regulating device includes taper valve core, pressure spring, regulation
Bar, elastic spring and nut, the adjusting rod is arranged on the other end in pilot valve body, and is fixed by nut, the adjusting rod
Interior to be provided with spring cavity, the pressure spring is arranged in spring cavity body, and the horizontal ends of the taper valve core are located at spring cavity
It is interior, and be connected with pressure spring, the tapering point of the taper valve core directly contacts with guide valve bushing.
In a preferred embodiment of the invention, the adjusting rod is provided with stopper slot.
In a preferred embodiment of the invention, the adjusting rod is provided with seal groove, is set in the seal groove
There is the first sealing ring.
In a preferred embodiment of the invention, several the second sealings are provided between guide valve bushing and the pilot valve body
Circle.
In a preferred embodiment of the invention, two radial direction seal rings are provided between the main valve housing and main valve body
Bar.
In a preferred embodiment of the invention, line contact sealing structure is used between the main valve plug and main valve housing.
The beneficial effects of the invention are as follows：
The present invention is compact-sized, and sealing is greatly improved, and the response opened and closed is very fast.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of existing precursor overflow valve；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the structural representation of the main valve housing in the present invention；
Fig. 4 is the structural representation of the pilot valve body in the present invention；
Fig. 5 is the structural representation of the guide valve bushing in the present invention；
Fig. 6 is the structural representation of the adjusting rod in the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 2 to Fig. 6, efficient precursor overflow valve provided by the invention, it includes main valve body 1 and pilot valve body 7, main valve
It is fixedly connected between body 1 and pilot valve body 7 by screw, main valve housing 3 is provided with main valve body 1, main valve plug 2 is provided with main valve housing 3,
Guide valve bushing 8 and pressure-regulating device are provided with pilot valve body 7.
It is fixedly connected between main valve body 1 and pilot valve body 7 by screw, and shrinkage pool 71 is provided with the bottom of pilot valve body 7, and it is recessed
The opening diameter in hole 71 and the corresponding matching of main valve housing 3, the application extends to the size of main valve housing 3, when main valve body 1 and pilot valve
When body 7 connects, the top of main valve housing 3 is located just in shrinkage pool 71, and there is small axial gap in the bottom hole face of shrinkage pool 71, with leading
Oil duct connection in valve body 7.Elastic spring groove 72 is provided with the end face of pilot valve body 7, for installing elastic spring 18.
Sealed between main valve housing 3 and shrinkage pool 71 by radial sealing mechanism, radial sealing mechanism concretely seals
Circle 6.
So, because sealing ring 6 is set in the end that main valve housing 3 is located in shrinkage pool 71, when main valve body 1 and pilot valve body 7 connect
When connecing, sealing ring 6 is radial seal, rather than axial seal, and this avoid the counteracting of original axial seal sealing ring elastic force
The situation of screw in compression power, so as to will not oil leak, improve sealing.
In addition, two radial direction seal ring bars 20 are provided between main valve housing 3 and main valve body 1, so that the application seals
Property is more reliable.
Furthermore line contact sealing structure is used between the main valve plug 2 and main valve housing 3 in the application, so that the application
The response of opening and closing is all very fast.
The inside of pilot valve body 7 is hollow shape, and is provided with screw thread in the side of its internal cavity, and guide valve bushing 8 is entirely through spiral shell
Line is removably attached to the side in pilot valve body 7, is provided with screen pack 10 and damper 11 in the guide valve bushing 8, on screen pack 10
Provided with back-up ring 9, so that the guide valve bushing 8 in the application is integral type structure, and without setting guide valve seat, guide valve bushing 8 can
Directly contacted with pressure-regulating device, saved part so that precursor overflow valve is compact-sized, easy to use.
In order to improve sealing, several second sealing rings are provided between guide valve bushing 8 and pilot valve body 7, in this application
Specific setting two, respectively the second sealing ring 12 and the second sealing ring 13.
Pressure-regulating device, it is arranged on the other end in pilot valve body 7, and it includes taper valve core 14, pressure spring 17, adjusted
Pole 15, elastic spring 18 and nut 19.
Adjusting rod 15 is arranged on the other end in pilot valve body 7, and is fixed by nut 19, and spring is provided with adjusting rod 15
Cavity, pressure spring 17 are arranged in spring cavity body, and the horizontal ends of taper valve core 14 are located in spring cavity body, and and pressure spring
17 are connected, the end contact of the tapering point of taper valve core 14 directly with guide valve bushing 8.
By said structure, the application eliminates swivel nut and spring base, and spring cavity is directly opened in into adjusting rod
In 15, this substantially reduces the axial length of precursor overflow valve and appearance and size is reduced.
Further, since the application uses the single pole structure of adjusting rod 15, adjusting rod 15 easily takes off when being positioned into pilot valve body 7
Go out, the application is provided with stopper slot 151 on adjusting rod 15, elastic spring 18 is arranged with elastic spring groove 72, when adjusting rod 15
When being positioned into pilot valve body 7, elastic spring 18 can carry out spacing to adjusting rod 15, so can prevent adjusting rod 15 from deviating from.
Furthermore a seal groove 152 is additionally provided with adjusting rod 15, the first sealing ring is provided with seal groove 152
16, the first sealing ring 16 can improve the sealing between adjusting rod 15 and pilot valve body 7.
Here is the concrete operating principle of the application：
The pressure of the pressure oil on A hydraulic fluid ports on main valve body 1 reaches pilot valve body by the passage of damper 21 and main valve body 1
7 passage, then the place cavity volume of 3 contained spring of main valve housing 5 is reached by the passage of filter screen 10, damper 11 and guide valve bushing 8, this pressure
Power closes main valve plug 2 plus the pressure of spring 5.Meanwhile pressure is acted also on above poppet valve core 14, when hydraulic fluid pressure is less than
During the power of pressure spring 17, poppet valve core 14 is closed, and when hydraulic fluid pressure is more than the power of pressure spring 17, poppet valve core 14 is opened,
The adjusted inner passage of bar 15 of guide's hydraulic oil reaches the inner passage of pilot valve body 7, then reaches main valve body to the passage of main valve body 1
B hydraulic fluid ports on 1, at this moment hydraulic oil produce pressure differential through damper 21 and damper 11 because flowing, make the lower section of main valve plug 2
Power be more than the power of top, this pressure differential overcomes the power of spring 5, opens main valve plug 2, and fluid flows to B hydraulic fluid ports from A hydraulic fluid ports, makes A
The pressure of pressure oil in hydraulic fluid port no longer rises, and plays a part of overflow valve.
And X hydraulic fluid ports are outside control mouths, when the pressure of A hydraulic fluid ports is not reaching to regulator setting pressure, at the application
In closed mode, at this moment if X hydraulic fluid ports cut-in pressure is less than regulator setting pressure, then there is pressure differential at the both ends of damper 21,
At this moment main valve plug 2 is opened, and fluid flows to B hydraulic fluid ports from A hydraulic fluid ports, plays a part of overflow valve.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of efficient precursor overflow valve, the precursor overflow valve includes main valve body and pilot valve body, the main valve body and pilot valve
It is fixedly connected between body by screw, main valve housing is provided with the main valve body, main valve plug, the pilot valve are provided with the main valve housing
It is provided with guide valve bushing and pressure-regulating device in vivo, it is characterised in that the pilot valve body bottom is provided with shrinkage pool, the top of the main valve housing
End is sealed in shrinkage pool between the main valve housing and shrinkage pool by radial sealing mechanism.
2. a kind of efficient precursor overflow valve according to claim 1, it is characterised in that the guide valve bushing is entirely through spiral shell
Line is detachably positioned in one end in pilot valve body.
3. a kind of efficient precursor overflow valve according to claim 2, it is characterised in that damping is provided with the guide valve bushing
Device and screen pack.
4. a kind of efficient precursor overflow valve according to claim 3, it is characterised in that the pressure-regulating device includes
Taper valve core, pressure spring, adjusting rod, elastic spring and nut, the adjusting rod is arranged on the other end in pilot valve body, and leads to
Cross nut to fix, be provided with spring cavity in the adjusting rod, the pressure spring is arranged in spring cavity body, the taper valve core
Horizontal ends be located in spring cavity body, and be connected with pressure spring, the tapering point of the taper valve core is directly and guide valve bushing
Contact.
5. a kind of efficient precursor overflow valve according to claim 4, it is characterised in that the adjusting rod is provided with spacing
Groove.
6. a kind of efficient precursor overflow valve according to claim 4, it is characterised in that the adjusting rod is provided with sealing
Ring recess, the seal groove is interior to be provided with the first sealing ring.
A kind of 7. efficient precursor overflow valve according to claim 2, it is characterised in that the guide valve bushing and pilot valve body it
Between be provided with several second sealing rings.
A kind of 8. efficient precursor overflow valve according to claim 1, it is characterised in that the main valve housing and main valve body it
Between be provided with two radial direction seal ring bars.
A kind of 9. efficient precursor overflow valve according to claim 1, it is characterised in that the main valve plug and main valve housing it
Between use line contact sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771516.XA CN107489799B (en) | 2017-08-31 | 2017-08-31 | Efficient guide overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771516.XA CN107489799B (en) | 2017-08-31 | 2017-08-31 | Efficient guide overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489799A true CN107489799A (en) | 2017-12-19 |
| CN107489799B CN107489799B (en) | 2023-11-03 |
Family
ID=60645938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710771516.XA Active CN107489799B (en) | 2017-08-31 | 2017-08-31 | Efficient guide overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489799B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587719A (en) * | 2004-08-04 | 2005-03-02 | 浙江大学 | Pilot type pure water overflow valve |
| CN201288713Y (en) * | 2008-10-22 | 2009-08-12 | 上海立新液压有限公司 | Unloading relief valve |
| CN102444637A (en) * | 2011-09-27 | 2012-05-09 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN106224607A (en) * | 2016-09-26 | 2016-12-14 | 东洋重工机（大连）有限公司 | A kind of screw thread high pressure inserted valve |
| CN207229853U (en) * | 2017-08-31 | 2018-04-13 | 上海立新液压有限公司 | A kind of efficient precursor overflow valve |
-
2017
- 2017-08-31 CN CN201710771516.XA patent/CN107489799B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587719A (en) * | 2004-08-04 | 2005-03-02 | 浙江大学 | Pilot type pure water overflow valve |
| CN201288713Y (en) * | 2008-10-22 | 2009-08-12 | 上海立新液压有限公司 | Unloading relief valve |
| CN102444637A (en) * | 2011-09-27 | 2012-05-09 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN106224607A (en) * | 2016-09-26 | 2016-12-14 | 东洋重工机（大连）有限公司 | A kind of screw thread high pressure inserted valve |
| CN207229853U (en) * | 2017-08-31 | 2018-04-13 | 上海立新液压有限公司 | A kind of efficient precursor overflow valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489799B (en) | 2023-11-03 |
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