CN106224313A - A kind of pioneer pump overflow valve - Google Patents
A kind of pioneer pump overflow valve Download PDFInfo
- Publication number
- CN106224313A CN106224313A CN201610698708.8A CN201610698708A CN106224313A CN 106224313 A CN106224313 A CN 106224313A CN 201610698708 A CN201610698708 A CN 201610698708A CN 106224313 A CN106224313 A CN 106224313A
- Authority
- CN
- China
- Prior art keywords
- valve
- overflow valve
- spool
- pioneer pump
- big
- 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
- 239000004744 fabric Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
-
- 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
Abstract
A kind of pioneer pump overflow valve, including lining, spool, spring, valve pocket；Poppet head big cylinder left side is provided with a diameter of ￠ C, is the cannelure of L deeply；It is provided with V-groove the big periphery of poppet head is uniform；Spool afterbody periphery coordinates with valve pocket endoporus, uses the matched in clearance of two kinds of different numerical value.The present invention is provided with a diameter of ￠ C in poppet head big cylinder left side, is the cannelure of L deeply, improves the keying characteristic of overflow valve, reduce leakage rate during closedown, improve work efficiency；At the uniform V-groove being provided with 8 60 degree of angles of the big periphery of poppet head, to improve overflow stability, it is to avoid runout；Spool afterbody column part coordinates with valve pocket hole, is set to two kinds of different numerical value matched in clearance, needs good seal performance at ￠ A, design gaps is little, at ￠ B, gap is big, both ensure that when overflow valve cuts out, leakage rate was little, the problem causing pioneer pump runout when turn avoid overflow valve standard-sized sheet.
Description
Technical field
The present invention relates to a kind of pioneer pump overflow valve, this overflow valve is mainly used in the guide of loader or excavator and supplies
In oil system, on the one hand ensure that pioneer pump is its timely and effective fuel feeding when pilot valve works, on the other hand protection guide's hydraulic pressure
System.
Background technology
As it is shown in figure 1, be the basic block diagram of pioneer pump overflow valve, mainly have lining 2, spool 3, spring 4, valve pocket 5,
Pressure regulation screw mandrel 6, O 7, locking nut 8 etc. form, and above part is installed concentratedly in the pioneer pump pump housing 1.Its hydraulic schematic diagram
As shown in Figure 4, during pilot valve work, pioneer pump is its fuel feeding, and overflow valve cuts out；When pilot valve does not works, overflow valve is opened and is let out
Fall the pressure oil of pioneer pump.There are two kinds of problems in prior art: one is that overflow valve closedown efficiency is low, causes leakage rate big so that
Pilot valve, for shortage of oil, affects its work efficiency；Two is pilot valve when not working, when pressure oil is all fallen by overflow valve earial drainage,
Often produce runout, cause pioneer pump to shake, not only affect the normal work of pioneer pump, and greatly reduce pioneer pump
Service life.
Summary of the invention
Present invention aim to provide a kind of pioneer pump overflow valve, it can overcome the problem that prior art exists.
The object of the present invention is achieved like this, and a kind of pioneer pump overflow valve, including lining, spool, spring, valve pocket, its feature exists
In: poppet head big cylinder left side is provided with a diameter of ￠ C, is the cannelure of L deeply；At the big periphery of poppet head
Uniform it is provided with V-groove；Spool afterbody periphery coordinates with valve pocket endoporus, uses the matched in clearance of two kinds of different numerical value.
The big periphery of described poppet head is evenly equipped with 8 V-groove, and described V-groove angle is 60 degree.
With valve pocket 5 endoporus at described spool afterbody periphery ￠ A, matched in clearance numerical value is 0.018-0.022 millimeter；
With valve pocket endoporus at described spool afterbody periphery ￠ B, matched in clearance numerical value is 0.05-0.06 millimeter.
Present configuration is simple, easy to process；Poppet head big cylinder left side is provided with a diameter of ￠ C, is L's deeply
Cannelure, improves the keying characteristic of overflow valve, reduces leakage rate during cut out, improve work efficiency；At poppet head
The big uniform V-groove being provided with 8 60 degree of angles of periphery, to improve overflow stability, it is to avoid runout；Spool afterbody cylinder
Part coordinates with valve pocket hole, is set to two kinds of different numerical value matched in clearance, needs good seal performance at ￠ A, so design
Gap is little, and at ￠ B, gap is big, both ensure that when overflow valve cuts out, leakage rate was little, and had caused guide when turn avoid overflow valve standard-sized sheet
The problem of pump runout.
Accompanying drawing explanation
Fig. 1 is that pioneer pump overflow valve assembles structural representation；
Fig. 2 is valve core structure schematic diagram of the present invention；
Fig. 2-1 is Fig. 2 left view；
Fig. 3 is prior art valve core structure schematic diagram；
Fig. 3-1 is Fig. 3 left view；
Fig. 4 is pioneer pump overflow valve hydraulic schematic diagram；
1, the pump housing, 2, lining, 3, spool, 4, spring, 5, valve pocket, 6, pressure regulation screw mandrel, 7, O, 8 locking nuts.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings；
A kind of pioneer pump overflow valve, including lining, spool, spring, valve pocket, it is characterised in that: left at the big cylinder of poppet head
End face is provided with a diameter of ￠ C, is the cannelure of L deeply；It is provided with V-groove the big periphery of poppet head is uniform；Spool tail
Portion's periphery coordinates with valve pocket endoporus, uses the matched in clearance of two kinds of different numerical value.
The big periphery of described poppet head is evenly equipped with 8 V-groove, and described V-groove angle is 60 degree.
With the coordinating of valve pocket endoporus at described spool afterbody periphery ￠ A, matched in clearance numerical value is 0.018-0.022
Millimeter；With the coordinating of valve pocket endoporus at described spool afterbody periphery ￠ B, matched in clearance numerical value is 0.05-0.06 millimeter.
When being embodied as, first lining 2 is pressed in the pioneer pump pump housing 1, at spool 3 and valve pocket 5 ￠ A on request, at ￠ B
Combine in the loading pump housing 1 with spring 4 after the matched in clearance mill of different numerical value processes, screw in pressure regulation screw mandrel 6, set up pressure
Pin with locking nut 8 after power.A mouth is the oil-in i.e. oil-in of pilot valve of executive component,
A mouth connects pilot valve oil-in, and P mouth provides the hydraulic fluid port i.e. oil-out of pressure oil for pioneer pump, and it is fuel-displaced that P mouth connects pioneer pump, T mouth
Connect with fuel tank.When pilot valve works, pioneer pump outlet pressure declines, and spool 3 is moved to the left under spring force and serves as a contrast
Set 2 laminating, overflow valve cuts out；When pilot valve does not works, pioneer pump outlet pressure rises, and spool 3 overcomes spring force to move right,
The fuel feeding overflow of pioneer pump is to fuel tank.The effect of overflow valve is, closes rapidly when pilot valve works, and guarantee pioneer pump is guide
Valve normal fuel injection and leakage rate are little, steady overflow when pilot valve does not works.
Claims (3)
1. a pioneer pump overflow valve, including lining (2), spool (3), spring (4), valve pocket (5), it is characterised in that: at valve
Core (3) head big cylinder left side is provided with a diameter of ￠ C, is the cannelure of L deeply；Spool (3) head big cylinder table；Face is equal
Cloth is provided with V-groove；Spool (3) afterbody periphery coordinates with valve pocket (5) endoporus, uses the gap of two kinds of different numerical value to join
Close.
A kind of pioneer pump overflow valve the most according to claim 1, it is characterised in that: described spool (3) head great circle
Post surface is evenly equipped with 8 V-groove, and described V-groove angle is 60 degree.
A kind of pioneer pump overflow valve the most according to claim 1, it is characterised in that: described spool (3) afterbody cylinder
With the coordinating of valve pocket (5) endoporus at the ￠ A of surface, matched in clearance numerical value is 0.018-0.022 millimeter；Described spool 3 afterbody circle
With the coordinating of valve pocket (5) endoporus at the ￠ B of post surface, matched in clearance numerical value is 0.05-0.06 millimeter；
Clearance seal at A, gap is 0.018-0.022 millimeter, is also clearance seal at B, and gap is 0.05-0.06 millimeter
The V-type groove of 8 60 degree of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698708.8A CN106224313B (en) | 2016-08-22 | 2016-08-22 | A kind of pioneer pump overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698708.8A CN106224313B (en) | 2016-08-22 | 2016-08-22 | A kind of pioneer pump overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224313A true CN106224313A (en) | 2016-12-14 |
| CN106224313B CN106224313B (en) | 2018-02-27 |
Family
ID=57554103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610698708.8A Active CN106224313B (en) | 2016-08-22 | 2016-08-22 | A kind of pioneer pump overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106224313B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139593A (en) * | 2018-10-22 | 2019-01-04 | 陈少同 | Guide's unloading valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008044800A1 (en) * | 2008-08-28 | 2010-03-04 | Robert Bosch Gmbh | Pilot-controlled pressure control valve, particularly pressure shut-off valve, pressure relief valve or pressure reducing valve, comprises master valve with master piston and pilot valve, where master piston is pre-stressed by spring |
| CN201560994U (en) * | 2009-09-29 | 2010-08-25 | 比亚迪股份有限公司 | Overflow valve |
| CN202073860U (en) * | 2011-06-01 | 2011-12-14 | 宁波克泰液压有限公司 | Threaded plug-in adjustable buffer overflow valve |
| CN202182080U (en) * | 2011-08-15 | 2012-04-04 | 宁波广天赛克思液压有限公司 | Overflow valve with secondary buffering function for hydraulic pump |
| CN102996557A (en) * | 2012-12-27 | 2013-03-27 | 宁波广天赛克思液压有限公司 | Pressure adjustable buffer overflow valve |
| CN103615424A (en) * | 2013-12-09 | 2014-03-05 | 怀特(中国)驱动产品有限公司 | Direct-operated-type hydraulic threaded insertion buffer overflow valve |
| CN203627959U (en) * | 2013-12-31 | 2014-06-04 | 德州宇力液压有限公司 | Ultrahigh pressure relief valve |
| CN204677838U (en) * | 2015-06-09 | 2015-09-30 | 武汉东江阀业制造有限公司 | Ultrahigh pressure direct-acting type transient equilibrium valve |
-
2016
- 2016-08-22 CN CN201610698708.8A patent/CN106224313B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008044800A1 (en) * | 2008-08-28 | 2010-03-04 | Robert Bosch Gmbh | Pilot-controlled pressure control valve, particularly pressure shut-off valve, pressure relief valve or pressure reducing valve, comprises master valve with master piston and pilot valve, where master piston is pre-stressed by spring |
| CN201560994U (en) * | 2009-09-29 | 2010-08-25 | 比亚迪股份有限公司 | Overflow valve |
| CN202073860U (en) * | 2011-06-01 | 2011-12-14 | 宁波克泰液压有限公司 | Threaded plug-in adjustable buffer overflow valve |
| CN202182080U (en) * | 2011-08-15 | 2012-04-04 | 宁波广天赛克思液压有限公司 | Overflow valve with secondary buffering function for hydraulic pump |
| CN102996557A (en) * | 2012-12-27 | 2013-03-27 | 宁波广天赛克思液压有限公司 | Pressure adjustable buffer overflow valve |
| CN103615424A (en) * | 2013-12-09 | 2014-03-05 | 怀特(中国)驱动产品有限公司 | Direct-operated-type hydraulic threaded insertion buffer overflow valve |
| CN203627959U (en) * | 2013-12-31 | 2014-06-04 | 德州宇力液压有限公司 | Ultrahigh pressure relief valve |
| CN204677838U (en) * | 2015-06-09 | 2015-09-30 | 武汉东江阀业制造有限公司 | Ultrahigh pressure direct-acting type transient equilibrium valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139593A (en) * | 2018-10-22 | 2019-01-04 | 陈少同 | Guide's unloading valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106224313B (en) | 2018-02-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A relief valve for pilot pumps Granted publication date: 20180227 Pledgee: Jingjiang sub branch of Postal Savings Bank of China Ltd. Pledgor: JIANGSU ERMA FLUID POWER ELEMENT CO.,LTD. Registration number: Y2024980000218 |