CN206860573U - A kind of plunger pump Stress control valve group - Google Patents
A kind of plunger pump Stress control valve group Download PDFInfo
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- CN206860573U CN206860573U CN201720766082.XU CN201720766082U CN206860573U CN 206860573 U CN206860573 U CN 206860573U CN 201720766082 U CN201720766082 U CN 201720766082U CN 206860573 U CN206860573 U CN 206860573U
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Abstract
A kind of plunger pump Stress control valve group, belong to technical field of hydraulic pressure, for reducing the fault rate of plunger pump Stress control valve group, its technical scheme is, composition includes exporting solenoid directional control valve, pressure regulation solenoid directional control valve, high-pressure overflow valve and low pressure relief valve, the P mouths of the solenoid directional control valve connect the high pressure hydraulic fluid port of plunger pump, T mouth connected tanks, A mouths and B mouths connect the low-pressure system and high-pressure system of shearing equipment respectively, the P mouths of the pressure regulation solenoid directional control valve connect the control port of plunger pump internal pressure-regulating valve, T mouth connected tanks, A mouths and B mouths pass through low pressure relief valve and high-pressure overflow valve connected tank respectively.The utility model obtains electric and dead electricity to switch overflow valve using pressure regulation solenoid directional control valve, and then realizes the control of plunger pump output pressure.Compared with traditional plunger pump Stress control valve group, magnetic valve is few used in the utility model, and system architecture is simple, and fault rate is low, improves the operational reliability of shearing equipment, ensure that equipment and the safety of personnel.
Description
Technical field
A kind of standby plunger oil pump feed Stress control valve group for shearing equipment double hydraulic system is the utility model is related to,
Belong to technical field of hydraulic pressure.
Background technology
The shearing equipment of iron and steel enterprise is typically provided two kinds of hydraulic systems, and one kind is high-pressure system（System pressure scope is
150~170bar）, one kind is low-pressure system（System pressure scope is 50 ~ 70bar）, predominantly steel plate pressing device, cutting edge lock
The hydraulic tests such as tight device, steel plate alignment device, oscillating roller way provide power.Every shearing equipment is furnished with three plunger pumps, just
It is high-pressure system fuel feeding often to open two during work for one, 1# pumps；3# pumps are low-pressure system fuel feeding；2# pumps are stand-by pump, both can in case
With 1# pumps, can also standby 3# pumps, therefore stand-by pump has two kinds of charge oil pressures.
Fig. 1 is traditional standby pump pressure control principle drawing, and stand-by pump works as 1# pumps in use, output solenoid directional control valve 1, low pressure
The b ends of magnetic valve 7 and high-pressure solenoid valve 8 simultaneously must be electric, and the output pressure of stand-by pump is controlled by electromagnetic relief valve 6, other controls
Oil circuit is closed by reversal valve, and the output pressure scope of pump is 150 ~ 170bar, i.e. stand-by pump output high-pressure oil.Stand-by pump
When 3# pumps in use, output solenoid directional control valve 1, low-voltage solenoid valve 7 and high-pressure solenoid valve 8 a ends simultaneously it is electric, stand-by pump it is defeated
It is 50 ~ 70bar to go out pressure by electromagnetic relief valve 6 and the co- controlling of low-voltage solenoid valve 7, pump output pressure scope, i.e. stand-by pump is defeated
Go out low pressure oil.This Stress control valve group have the drawback that magnetic valve quantity used it is more, it is necessary to three magnetic valves simultaneously
Action could realize the switching of output pressure, and system architecture is complicated, and fault rate is higher, reduces the reliable of shearing equipment
Property.Once pressure handoff failure, hydraulic oil scurry into low-pressure system, it is easy to cause device damage, or even jeopardize the person of worker
Safety, it is therefore necessary to improved.
Utility model content
The purpose of this utility model is the drawback for prior art, there is provided a kind of plunger pump Stress control valve group, with
The operational reliability of shearing equipment is improved, eliminates accident potential.
Problem described in the utility model is realized with following technical proposals：
A kind of plunger pump Stress control valve group, composition include output solenoid directional control valve, pressure regulation solenoid directional control valve, high pressure and overflow
Valve and low pressure relief valve are flowed, the P mouths of the solenoid directional control valve connect the high pressure hydraulic fluid port of plunger pump, T mouth connected tanks, A mouths and B mouths difference
The low-pressure system and high-pressure system of shearing equipment are connect, the P mouths of the pressure regulation solenoid directional control valve connect the control of plunger pump internal pressure-regulating valve
Hydraulic fluid port, T mouth connected tanks, A mouths and B mouths pass through low pressure relief valve and high-pressure overflow valve connected tank respectively.
Above-mentioned plunger pump Stress control valve group, also include electromagnetic relief valve, the oil inlet end of the electromagnetic relief valve in composition
Connect the high pressure hydraulic fluid port of plunger pump, oil outlet end connected tank.
Above-mentioned plunger pump Stress control valve group, pressure regulation solenoid directional control valve, high-pressure overflow valve and the low pressure relief valve pass through
Valve block is linked together, and four oil ducts, respectively A oil ducts, B oil ducts, P oil ducts and T oil ducts, the low pressure are provided with the valve block
The oil inlet of overflow valve is connected by A oil ducts with the A mouths of pressure regulation solenoid directional control valve, and the oil inlet of high-pressure overflow valve passes through B oil ducts
It is connected with the B mouths of pressure regulation solenoid directional control valve, the oil inlet of P oil ducts is connected by the control port of oil pipe and plunger pump internal pressure-regulating valve
Connect, oil-out connects the P mouths of pressure regulation solenoid directional control valve, and the T oil ducts are provided with four hydraulic fluid ports, and one of hydraulic fluid port passes through oil pipe and oil
Case connects, and its excess-three hydraulic fluid port connects the T mouths of pressure regulation solenoid directional control valve, the oil-out of high-pressure overflow valve and low pressure relief valve respectively
Oil-out.
The utility model obtains electric and dead electricity to switch overflow valve using pressure regulation solenoid directional control valve, and then realizes that plunger pump is defeated
Go out the control of pressure.Compared with traditional plunger pump Stress control valve group, magnetic valve is few used in the utility model, system architecture letter
Single, fault rate is low, improves the operational reliability of shearing equipment, ensure that equipment and the safety of personnel.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is traditional plunger pump pressure control principle drawing；
Fig. 2 is hydraulic principle figure of the present utility model；
Fig. 3 is the connection diagram of pressure regulation solenoid directional control valve, high-pressure overflow valve and low pressure relief valve；
Fig. 4 is the structural representation of valve block.
In figure respectively marked as：1st, solenoid directional control valve is exported, 2, plunger pump, 3, pressure regulation solenoid directional control valve, 4, high-pressure overflow valve,
5th, low pressure relief valve, 6, electromagnetic relief valve, 7, low-voltage solenoid valve, 8, high-pressure solenoid valve, 9, valve block, 10, bolt hole, 11, P oil
Road, 12, B oil ducts, 13, T oil ducts, 14, A oil ducts.
Embodiment
Referring to Fig. 2~Fig. 4, the utility model mainly includes output solenoid directional control valve 1, pressure regulation solenoid directional control valve 3, high pressure and overflow
Valve 4, low pressure relief valve 5, electromagnetic relief valve 6 and valve block 9 are flowed, wherein, pressure regulation solenoid directional control valve 3, high-pressure overflow valve 4 and low pressure are overflow
Stream valve 5 is bolted and is assemblied on valve block 9, and valve block 9 is rectangular shape, length size be respectively 90mm, 80mm,
80mm, four oil ducts are internally provided with, respectively A oil ducts 14, B oil ducts 12, P oil ducts 11 and T oil ducts 13, T oil ducts 13 there are four
Interface, remaining oil duct have two interfaces, with flexible pipe by the Pi mouths of P oil ducts 11（Oil inlet）With the control of the internal pressure-regulating valve of plunger pump 2
Liquefaction mouth connects, the P mouths of P oil ducts 11（Oil-out）It is connected with the P mouths of pressure regulation solenoid directional control valve 3；With flexible pipe by the To of T oil ducts 13
Mouth is connected with fuel tank, and the T mouths of T oil ducts 13 are connected with the T mouths of pressure regulation solenoid directional control valve 3, and the T1 mouths and T2 mouths of T oil ducts 13 connect respectively
The oil-out of low pressure relief valve 5 and high-pressure overflow valve 4；The A mouths of A oil ducts 14 connect the A mouths of pressure regulation solenoid directional control valve 3, and Ao mouths connect low
The oil inlet of pressurized overflow valve 5；The B mouths of B oil ducts 12 connect the B mouths of pressure regulation solenoid directional control valve 3, and Bo mouths connect the oil-feed of high-pressure overflow valve 4
Mouthful.Electric and dead electricity is obtained by pressure regulation solenoid directional control valve 3, overflow Vavle switching is carried out, realizes the Stress control of plunger pump.
The course of work of the present utility model is：Work as stand-by pump（2# pumps）When 3# pumps in use, a of output solenoid directional control valve 1
Hold electric, at the same pressure regulation solenoid directional control valve 3 it is electric, plunger pump output pressure is 50 ~ 70bar, now pressure regulation solenoid directional control valve 3
P mouths communicate with A mouths, and B mouths communicate with T mouths, and control oil enters valve block 9 from Pi mouths, then by the Pi mouths of valve block 9 to P mouths, into tune
Press solenoid directional control valve 3 P mouths, by the P mouths of pressure regulation solenoid directional control valve 3 to A mouths, then by valve block 9 A mouths to Ao mouths, into low pressure
The oil inlet of overflow valve 5, enter the T1 mouths of valve block 9, T1 mouths to To mouths, by To mouth oil return boxes from the oil-out of low pressure relief valve 5；
Work as stand-by pump（2# pumps）When 1# pumps in use, the b ends of output solenoid directional control valve 1 obtain electric, while the dead electricity of pressure regulation solenoid directional control valve 3,
Plunger pump output pressure P1 scopes are 150 ~ 170bar, and now the P mouths of pressure regulation solenoid directional control valve 3 communicate with B mouths, A mouths and T mouth phases
Logical, control oil enters valve block 9 from Pi mouths, then by the Pi mouths of valve block 9 to P mouths, into the P mouths of pressure regulation solenoid directional control valve 3, by adjusting
Press solenoid directional control valve 3 P mouths to B mouths, then by valve block 9 B mouths to Bo mouths, into the oil inlet of high-pressure overflow valve 4, overflow from high pressure
The oil-out of valve 4 is flowed to the T2 mouths of valve block 9, T2 mouths to To mouths, To mouth oil return boxes.
Electromagnetic relief valve 6 is used for the MTP for limiting system, when system oil pressure exceedes the threshold value of setting, electromagnetism overflow
Valve 6 is opened, and prevents the too high damage hydraulic system of oil pressure.
Claims (3)
1. a kind of plunger pump Stress control valve group, it is characterized in that, composition includes exporting solenoid directional control valve（1）, pressure regulation electromagnetism changes
To valve（3）, high-pressure overflow valve（4）And low pressure relief valve（5）, the solenoid directional control valve（1）P mouths connect plunger pump（2）High pressure
Hydraulic fluid port, T mouth connected tanks, A mouths and B mouths connect the low-pressure system and high-pressure system of shearing equipment, the pressure regulation solenoid directional control valve respectively
（3）P mouths connect plunger pump（2）The control port of internal pressure-regulating valve, T mouth connected tanks, A mouths and B mouths pass through low pressure relief valve respectively（5）
And high-pressure overflow valve（4）Connected tank.
2. plunger pump Stress control valve group according to claim 1, it is characterized in that, electromagnetic relief valve is also included in composition
（6）, the electromagnetic relief valve（6）Oil-feed termination plunger pump（2）High pressure hydraulic fluid port, oil outlet end connected tank.
3. plunger pump Stress control valve group according to claim 1 or 2, it is characterized in that, the pressure regulation solenoid directional control valve
（3）, high-pressure overflow valve（4）And low pressure relief valve（5）Pass through valve block（9）Link together, the valve block（9）Inside it is provided with four oil
Road, respectively A oil ducts（14）, B oil ducts（12）, P oil ducts（11）With T oil ducts（13）, the low pressure relief valve（5）Oil inlet lead to
Cross A oil ducts（14）With pressure regulation solenoid directional control valve（3）A mouths connection, high-pressure overflow valve（4）Oil inlet pass through B oil ducts（12）With
Pressure regulation solenoid directional control valve（3）B mouths connection, P oil ducts（11）Oil inlet pass through oil pipe and plunger pump（2）The control of internal pressure-regulating valve
Hydraulic fluid port connects, and oil-out connects pressure regulation solenoid directional control valve（3）P mouths, the T oil ducts（13）Provided with four hydraulic fluid ports, one of oil
Mouth is connected by oil pipe with fuel tank, and its excess-three hydraulic fluid port connects pressure regulation solenoid directional control valve respectively（3）T mouths, high-pressure overflow valve（4）'s
Oil-out and low pressure relief valve（5）Oil-out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720766082.XU CN206860573U (en) | 2017-06-28 | 2017-06-28 | A kind of plunger pump Stress control valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720766082.XU CN206860573U (en) | 2017-06-28 | 2017-06-28 | A kind of plunger pump Stress control valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860573U true CN206860573U (en) | 2018-01-09 |
Family
ID=60828822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720766082.XU Expired - Fee Related CN206860573U (en) | 2017-06-28 | 2017-06-28 | A kind of plunger pump Stress control valve group |
Country Status (1)
| Country | Link |
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| CN (1) | CN206860573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026637A (en) * | 2018-09-27 | 2018-12-18 | 天津市中重科技工程有限公司 | A kind of novel DRG hydraulic pump parallel connection concentration remote pressure control loop |
| CN110145512A (en) * | 2019-05-30 | 2019-08-20 | 江苏远航精密合金科技股份有限公司 | A kind of Hydraulic system and control method of ultra-wide nickel-base material cutter |
-
2017
- 2017-06-28 CN CN201720766082.XU patent/CN206860573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026637A (en) * | 2018-09-27 | 2018-12-18 | 天津市中重科技工程有限公司 | A kind of novel DRG hydraulic pump parallel connection concentration remote pressure control loop |
| CN110145512A (en) * | 2019-05-30 | 2019-08-20 | 江苏远航精密合金科技股份有限公司 | A kind of Hydraulic system and control method of ultra-wide nickel-base material cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180412 Address after: 056015 Fuxing Road, Hebei, Handan, No. 232 Co-patentee after: Handan Ruida energy limited liability company Patentee after: River steel Limited by Share Ltd Handan branch Address before: 056015 Fuxing Road, Hebei, Handan, No. 232 Patentee before: River steel Limited by Share Ltd Handan branch |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20200628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |