CN104533781A - Electromagnetic reversing swash plate plunger pump and control method thereof - Google Patents
Electromagnetic reversing swash plate plunger pump and control method thereof Download PDFInfo
- Publication number
- CN104533781A CN104533781A CN201410848694.4A CN201410848694A CN104533781A CN 104533781 A CN104533781 A CN 104533781A CN 201410848694 A CN201410848694 A CN 201410848694A CN 104533781 A CN104533781 A CN 104533781A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- variable cylinder
- pump
- oil
- valve
- 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.)
- Pending
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
An electromagnetic reversing swash plate plunger pump comprises a shell, wherein a valve is installed at the lower end of the shell, an oil consumption pump is installed on the valve, one end of a driving shaft is installed in the shell, the other end of the driving shaft is installed in a sliding bearing, and the sliding bearing is installed in the valve through a sliding bearing pedestal; a bottom crescent bearing and a top crescent bearing which are used for installing a swash plate are arranged on the shell, a plunger assembly is pressed on the swash plate through a pressing plate, an oil distribution plate is installed on the valve, a cylinder body is pressed on the oil distribution plate, a variable cylinder is installed in the shell, a left end cap and a right end cap are installed at the two ends of the variable cylinder, a central shaft penetrates through the variable cylinder, a left reset spring and a right reset spring are arranged in an inner cavity of the variable cylinder and symmetrical about a slide block so that the variable cylinder can be promoted to keep static, and an electromagnetic reversing valve and a filtering device are installed on the shell; a safety control device is installed on the valve, and adjusting rods are arranged on the left end cap and the right end cap. The emission of the pump is changed in real time through the adjusting rods, the operation difficulty is effectively lowered, and the energy consumption is saved.
Description
Technical field
The present invention relates to plunger pump commutation and control technique field, particularly relate to a kind of electromagnetic switch oblique plate plunger pump and controlling method thereof.
Background technique
The plunger pump of current use normally realizes changes in flow rate by the mode that changes swash plate or cylinder body inclination angle, be mainly used in the oil hydraulic pump of high-pressure high-flow, this by changing swash plate or cylinder body inclination angle, to carry out the plunger pump structure of flow control more complicated, controls operation loaded down with trivial details simultaneously; Particularly some are needed to change in real time pump displacement, to reach capacity discharge capacity at pump, during to change plunger pump delivery further, pressure oil need be restarted and again promote variable cylinder body and just changed, not only wasting energy, and waste time and energy; And the inlet port of swash plate and force feed mouth can only one-way pump oil, thus cause plunger pump inefficiency; The assembly arranged in variable cylinder body needs lubrication after long-play, to maintain normal operation, if increase lubricating function certainly will increase cost of production on existing plunger pump, also will increase the load of plunger pump; In addition, variable cylinder body, without under external control effect, keeps the characteristic of geo-stationary poor, causes plunger pump can not stop pump oil in time, is in zero-bit state.
Summary of the invention
Technical problem solved by the invention is to provide a kind of electromagnetic switch oblique plate plunger pump and controlling method thereof, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Electromagnetic switch oblique plate plunger pump, comprises housing, wherein, valve body is arranged on housing lower end, and slippage pump is fastening to be installed on valve body, and driving shaft one end is installed in housing by ball bearings, the other end is installed in sliding bearing, and sliding bearing is installed in valve body by plain bearing housing, and the bottom crescent moon bearing be provided with on housing for installing swash plate and top crescent moon bearing, swash plate is installed on housing by bottom crescent moon bearing and top crescent moon bearing, plunger assembly is pressed on swash plate by platen, oil distribution casing is installed on valve body, cylinder body is pressed on oil distribution casing, variable cylinder body is installed in housing, and its two ends are provided with left end cap and right end cap, by install left end cap and right end cap variable cylinder body is sealed, central shaft is through variable cylinder body, its one end is arranged in left end cap, the other end is arranged in right end cap, and the left Returnning spring of variable cylinder intracoelomic cavity setting and right Returnning spring are about slide block symmetry, housing is also provided with solenoid directional control valve and filter, solenoid directional control valve is used for the side-to-side movement of controlled variable cylinder body, filter is used for filtration system pressure oil, in addition, valve body is also provided with safety control, left end cap and right end cap is provided with the adjustable lever for manual tune pump limit discharge capacity.
In the present invention, housing is provided with the locating stud for carrying out relative positioning to valve body.
In the present invention, slippage pump is installed on valve body by slippage pump clamping bolt is fastening.
In the present invention, driving shaft and housing and external interface place are provided with the outside framework oil seal for sealing.
In the present invention, driving shaft is provided with the guiding conical surface for mounting framework oil sealing.
In the present invention, inside, driving shaft upper end is provided with and locates fastening internal thread for ex-ternal transmission part.
In the present invention, safety control comprises the low pressure relief valve be arranged on valve body, bottom high-pressure relief valve and top high-voltage relief valve, for the safety of control system.
In the present invention, central shaft is provided with step.
In the present invention, splined shaft is provided with in slippage pump.
In the present invention, variable cylinder body right-hand member is provided with internal holes back-up ring.
Electromagnetic switch oblique plate plunger pump controlling method, concrete steps are as follows:
Under outside dynamic action, driving shaft rotates, and drive cylinder body and plunger assembly to rotate by spline, splined shaft simultaneously by arranging in slippage pump drives slippage pump pump oil, the oil duct that the pressure oil that slippage pump pumps is arranged on valve body and housing is delivered to electromagnetic switch valve inlet, solenoid directional control valve is normally off, when outside without when handling, pressure oil cannot be delivered to follow-up relevant execution components and parts, the pressure oil of slippage pump is through low pressure relief valve off-load, now under the effect of left Returnning spring and right Returnning spring pretightening force, variable cylinder body keeps geo-stationary, and without heeling condition about being in relatively by slide block control swash plate, now pump displacement is zero, plunger assembly and cylinder body are without relative movement, stop pump oil,
When external control controls to commutate about solenoid directional control valve, pressure oil can distinguish left end die cavity or the right-hand member die cavity of entering variable cylinder body, when pressure oil enters right-hand member die cavity, promote variable cylinder body left lateral, the pressure oil of left end to return and by oil duct off-load through oil circuit, and oil is covered on variable cylinder body and associated components thereof, play lubrication, now the power of right Returnning spring is discharged on the right-hand member spring seat that withstands on central shaft step, and the right-hand member internal holes back-up ring of variable cylinder body compresses right Returnning spring by right-hand member spring cup, meanwhile, variable cylinder body moves left, make the effect of hole back-up ring disengaging to left end spring cup of left end in variable cylinder body, now left end spring cup acts on installation left end semicircle back-up ring on center shaft, left Returnning spring compresses left lateral under variable cylinder body is by the effect of left end spring seat, so far, under the effect of variable cylinder body and by slide block drive swash plate rotate through several angle, pump reaches capacity discharge capacity, this is fixed displacement, limit discharge capacity is changed by regulating the adjustable lever that left end cap is arranged, the left side when variable cylinder body left lateral is made to withstand on adjustable lever, thus change the angle of swing of swash plate, and then change discharge capacity, in like manner, variable cylinder body right lateral is promoted when pressure oil enters left end die cavity, when variable cylinder running body is to limit position, slippage pump continues pump oil, and to ensure the relative position of variable cylinder body, and pressure oil is by low pressure relief valve off-load, the inclination of swash plate makes plunger assembly and cylinder body produce relative movement in rotary course, plunger assembly moves back and forth in cylinder body, namely complete and inhale force feed process, swash plate from the state of turning clockwise change into be rotated counterclockwise state time, former inlet port is changed into force feed mouth by correspondence, and former force feed mouth changes into inlet port, and this is two-way pump oil, two hydraulic fluid ports are separately installed with bottom high-pressure relief valve and top high-voltage relief valve, for overload protection during force feed,
In the present invention, in system operation, pressure oil filters through filter, plays the effect of cleaning pressure oil.
Beneficial effect: the left Returnning spring that in the present invention, variable cylinder intracoelomic cavity is arranged and right Returnning spring are about slide block symmetry, under the effect of initial tension of spring, variable cylinder body keeps geo-stationary, without heeling condition about being in relatively by slide block controlled variable swash plate, timely control plunger pump stops pump oil, is in zero-bit state; Simultaneously pressure oil to return and by oil duct off-load through oil circuit, and is covered by oil on variable cylinder body and associated components thereof and play lubrication; And control plunger pump two-way pump oil by solenoid directional control valve, easy and simple to handle, working efficiency is high, in addition, reaching capacity discharge capacity at pump, changing limit discharge capacity by regulating adjustable lever, and then change pump delivery in real time, effectively reduce operation easier, also save energy ezpenditure.
Accompanying drawing explanation
Fig. 1 is the plan view of preferred embodiment of the present invention.
Fig. 2 is the left view of preferred embodiment of the present invention.
Fig. 3 is the right elevation of preferred embodiment of the present invention.
Fig. 4 is the sectional view of preferred embodiment of the present invention.
Fig. 5 is the plan view of preferred embodiment of the present invention.
Fig. 6 is the variable cylinder body structure schematic diagram in preferred embodiment of the present invention.
Fig. 7 is the schematic diagram of preferred embodiment of the present invention.
Fig. 8 is the clockwise tilt boundary schematic diagram of swash plate in preferred embodiment of the present invention.
Fig. 9 is the counterclockwise tilt boundary schematic diagram of swash plate in preferred embodiment of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See the electromagnetic switch oblique plate plunger pump of Fig. 1 ~ Fig. 6, comprise outside framework oil seal 1, bottom crescent moon bearing 2, swash plate 3, platen 4, plunger assembly 5, cylinder body 6, oil distribution casing 7, locating stud 8, slippage pump 9, valve body 10, solenoid directional control valve 11, housing 12, variable cylinder body 13, central shaft 14, slide block 15, top crescent moon bearing 16, ball bearing 17, driving shaft 18, left end cap 19, left Returnning spring 20, right Returnning spring 21, right end cap 22, filter 23, bottom high-pressure relief valve 24, valve body clamping bolt 25, top high-voltage relief valve 26, low pressure relief valve 27 and slippage pump clamping bolt 28.
In the present embodiment, all integrated designs of pump are on housing 12, the valve body 10 of lower end is by locating stud 8 and housing 12 relative positioning, and it is fastening by valve body clamping bolt 25, slippage pump 9 is installed on valve body 10 by slippage pump clamping bolt 28 is fastening, driving shaft 18 one end is supported by ball bearing 17 and is installed in 12, the other end is by being installed in sliding bearing, and sliding bearing is installed in valve body 10 by plain bearing housing, swash plate 3 is installed on housing 12 by bottom crescent moon bearing 2 and top crescent moon bearing 16, plunger assembly 5 is pressed on swash plate 3 by platen 4, oil distribution casing 7 is installed on valve body 10, cylinder body 6 is crushed on oil distribution casing 7, driving shaft 18 and housing 12 are sealed by outside framework oil seal 1 with external interface place, variable cylinder body 13 is installed in housing 12, and sealing is installed respectively by left end cap 19 and right end cap 22 in two ends, central shaft 14 is through variable cylinder body 13, its one end loads in left end cap 19, the other end loads in right end cap 22, the left Returnning spring 20 arranged about variable cylinder body 13 inner chamber and right Returnning spring 21 are about slide block 15 symmetry, solenoid directional control valve 11 is installed on housing 12, for the side-to-side movement of controlled variable cylinder body 13, filter 23 is installed on valve body 10, for filtration system pressure oil, be installed on the low pressure relief valve 27 on valve body 10, bottom high-pressure relief valve 24 and top high-voltage relief valve 26 are for the safety control of system.
Shown in Figure 7, in the present embodiment, external impetus drives driving shaft 18 to rotate, driving shaft 18 drives cylinder body 6 and plunger assembly 5 to rotate by spline, drive slippage pump 9 pump oil by the splined shaft in slippage pump 9 simultaneously, the oil duct of the pressure oil that slippage pump 9 pumps on valve body 10 and housing 12 is delivered to the entrance of solenoid directional control valve 11, solenoid directional control valve 11 is normally off, when without external control, pressure oil cannot be delivered to follow-up relevant execution components and parts, the pressure oil of slippage pump 9 is through low pressure relief valve 27 off-load, now under the effect of left Returnning spring 20 and right Returnning spring 21 pretightening force, variable cylinder body 13 keeps geo-stationary, and without heeling condition about being in relatively by 15 controls 3, now pump displacement is zero, plunger assembly 5 and cylinder body 6 are without relative movement, stop pump oil,
When external control control solenoid directional control valve about 11 commutates, pressure oil can distinguish left end die cavity or the right-hand member die cavity of entering variable cylinder body 13, to enter right-hand member die cavity, when pressure oil enters right-hand member die cavity, promote variable cylinder body 13 left lateral, the pressure oil of left end to return and by relevant oil duct off-load through oil circuit, and oil is covered on variable cylinder body 13 and associated components thereof, play lubrication, now the power of right Returnning spring 21 is discharged on the right-hand member spring seat that withstands on central shaft 14 step, and the right-hand member internal holes back-up ring of variable cylinder body 13 compresses right Returnning spring 21 by right-hand member spring cup, meanwhile, variable cylinder body 13 is to left movement, make the effect of hole back-up ring disengaging to left end spring cup of left end in variable cylinder body 13, now left end spring cup acts on installation left end semicircle back-up ring on a central shaft 14, left Returnning spring 20 compresses left lateral under variable cylinder body 13 is by the effect of left end spring seat, so far, under the effect of variable cylinder body 13, drive swash plate 3 to rotate through several angle by slide block 15, pump reaches capacity discharge capacity, this is fixed displacement, limit discharge capacity is changed by regulating the adjustable lever of design on left end cap 19, the left side when variable cylinder body 13 left lateral is made to withstand on adjustable lever, thus change the angle of swing of swash plate 3, reach the effect changing discharge capacity, equally, variable cylinder body 13 right lateral is promoted when pressure oil enters left end die cavity, when variable cylinder body 13 moves to limit position, slippage pump 9 continues pump oil, to ensure the relative position of variable cylinder body 13, and pressure oil is by low pressure relief valve 27 off-load,
Limit position view is rotated counterclockwise see the suitable of the swash plate 3 shown in Fig. 8 and Fig. 9, the inclination of swash plate 3 makes plunger assembly 5 and cylinder body 6 produce relative movement in rotary course, plunger assembly 5 moves back and forth in cylinder body 6, namely complete and inhale force feed process, swash plate 3 from the state of turning clockwise change into be rotated counterclockwise state time, may correspond to and former inlet port is changed into force feed mouth, original force feed mouth changes into inlet port, this is two-way pump oil, two hydraulic fluid ports are separately installed with bottom high-pressure relief valve 24 and top high-voltage relief valve 26, for overload protection during force feed,
In system operation, pressure oil filters through filter 23, plays the effect of cleaning pressure oil.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. electromagnetic switch oblique plate plunger pump, comprise housing, it is characterized in that, valve body is arranged on housing lower end, slippage pump is fastening to be installed on valve body, driving shaft one end is installed in housing by ball bearings, and the other end is installed in sliding bearing, and sliding bearing is installed in valve body by plain bearing housing; And the bottom crescent moon bearing be provided with on housing for installing swash plate and top crescent moon bearing, plunger assembly is pressed on swash plate by platen, oil distribution casing is installed on valve body, cylinder body is pressed on oil distribution casing, variable cylinder body is installed in housing, and its two ends are provided with left end cap and right end cap, central shaft is through variable cylinder body, its one end is arranged in left end cap, the other end is arranged in right end cap, and the left Returnning spring of variable cylinder intracoelomic cavity setting and right Returnning spring are about slide block symmetry, and housing is also provided with solenoid directional control valve and filter; In addition, valve body is also provided with safety control, left end cap and right end cap is provided with the adjustable lever for manual tune pump limit discharge capacity.
2. electromagnetic switch oblique plate plunger pump according to claim 1, is characterized in that, housing is provided with the locating stud for carrying out relative positioning to valve body.
3. electromagnetic switch oblique plate plunger pump according to claim 1, is characterized in that, driving shaft and housing and external interface place are provided with the outside framework oil seal for sealing.
4. electromagnetic switch oblique plate plunger pump according to claim 3, is characterized in that, driving shaft is provided with the guiding conical surface for mounting framework oil sealing.
5. electromagnetic switch oblique plate plunger pump according to claim 1, is characterized in that, inside, driving shaft upper end is provided with locates fastening internal thread for ex-ternal transmission part.
6. electromagnetic switch oblique plate plunger pump according to claim 1, is characterized in that, safety control comprises the low pressure relief valve be arranged on valve body, bottom high-pressure relief valve and top high-voltage relief valve.
7. electromagnetic switch oblique plate plunger pump according to claim 1, is characterized in that, central shaft is provided with step.
8. electromagnetic switch oblique plate plunger pump according to claim 1, is characterized in that, be provided with splined shaft in slippage pump.
9. electromagnetic switch oblique plate plunger pump controlling method, is characterized in that, concrete steps are as follows:
Under outside dynamic action, driving shaft rotates, and drive cylinder body and plunger assembly to rotate by spline, splined shaft simultaneously by arranging in slippage pump drives slippage pump pump oil, the oil duct that the pressure oil that slippage pump pumps is arranged on valve body and housing is delivered to electromagnetic switch valve inlet, solenoid directional control valve is normally off, when outside without when handling, the pressure oil of slippage pump is through low pressure relief valve off-load, now under the effect of left Returnning spring and right Returnning spring pretightening force, variable cylinder body keeps geo-stationary, and without heeling condition about being in relatively by slide block control swash plate, now pump displacement is zero, plunger assembly and cylinder body are without relative movement, stop pump oil,
When external control controls to commutate about solenoid directional control valve, pressure oil can distinguish left end die cavity or the right-hand member die cavity of entering variable cylinder body, when pressure oil enters right-hand member die cavity, promote variable cylinder body left lateral, the pressure oil of left end to return and by oil duct off-load through oil circuit, and pressure oil is covered on variable cylinder body and associated components thereof, now the power of right Returnning spring is discharged on the right-hand member spring seat that withstands on central shaft step, and the right-hand member internal holes back-up ring of variable cylinder body compresses right Returnning spring by right-hand member spring cup, meanwhile, variable cylinder body moves left, make the effect of hole back-up ring disengaging to left end spring cup of left end in variable cylinder body, now left end spring cup acts on installation left end semicircle back-up ring on center shaft, left Returnning spring compresses left lateral under variable cylinder body is by the effect of left end spring seat, so far, under the effect of variable cylinder body and by slide block drive swash plate rotate through several angle, pump reaches capacity discharge capacity, limit discharge capacity is changed by regulating the adjustable lever that left end cap is arranged, the left side when variable cylinder body left lateral is made to withstand on adjustable lever, thus change the angle of swing of swash plate, and then change discharge capacity, in like manner, variable cylinder body right lateral is promoted when pressure oil enters left end die cavity.
10. electromagnetic switch oblique plate plunger pump controlling method according to claim 9, is characterized in that, when variable cylinder running body is to limit position, slippage pump continues pump oil, and to ensure the relative position of variable cylinder body, and pressure oil is by low pressure relief valve off-load; The inclination of swash plate makes plunger assembly and cylinder body produce relative movement in rotary course; plunger assembly moves back and forth in cylinder body; namely complete and inhale force feed process; swash plate from the state of turning clockwise change into be rotated counterclockwise state time; former inlet port is changed into force feed mouth by correspondence; former force feed mouth changes into inlet port, and this is two-way pump oil, and realizes overload protection by bottom high-pressure relief valve and top high-voltage relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848694.4A CN104533781A (en) | 2014-12-30 | 2014-12-30 | Electromagnetic reversing swash plate plunger pump and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848694.4A CN104533781A (en) | 2014-12-30 | 2014-12-30 | Electromagnetic reversing swash plate plunger pump and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104533781A true CN104533781A (en) | 2015-04-22 |
Family
ID=52849370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848694.4A Pending CN104533781A (en) | 2014-12-30 | 2014-12-30 | Electromagnetic reversing swash plate plunger pump and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757372A (en) * | 2018-05-24 | 2018-11-06 | 同济大学 | A kind of plunger pump of stepper motor and lead screw driving |
| CN109441752A (en) * | 2018-09-30 | 2019-03-08 | 江苏金陵智造研究院有限公司 | A kind of hydraulic servo control system servopump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2554930B2 (en) * | 1989-04-07 | 1996-11-20 | 日清樹脂工業 株式会社 | Hydraulic pump device |
| US20020014149A1 (en) * | 2000-08-01 | 2002-02-07 | Carsten Fiebing | Hydrostatic variable displacement pump having springs arranged outside the servocylinder pressure chamber |
| US6684634B1 (en) * | 1999-09-01 | 2004-02-03 | Yanmar Diesel Engine Co., Ltd. | Swash plate angle control mechanism of hydraulic continuously variable transmission |
| US20060174614A1 (en) * | 2005-02-08 | 2006-08-10 | Xingen Dong | Control devices for swashplate type variable displacement piston pump |
| CN101326364A (en) * | 2006-03-10 | 2008-12-17 | 布鲁宁赫斯海诺马帝克有限公司 | Combined pump housing for several rated quantities |
| CN201218171Y (en) * | 2008-07-09 | 2009-04-08 | 宁波恒力液压机械制造有限公司 | Unidirectional hydraulic axial variable displacement plunger pump |
| CN103291575A (en) * | 2013-05-29 | 2013-09-11 | 宁波恒力液压股份有限公司 | Electric proportional variable axial plunger pump |
| CN204371654U (en) * | 2014-12-30 | 2015-06-03 | 南京萨伯工业设计研究院有限公司 | Electromagnetic switch oblique plate plunger pump |
-
2014
- 2014-12-30 CN CN201410848694.4A patent/CN104533781A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2554930B2 (en) * | 1989-04-07 | 1996-11-20 | 日清樹脂工業 株式会社 | Hydraulic pump device |
| US6684634B1 (en) * | 1999-09-01 | 2004-02-03 | Yanmar Diesel Engine Co., Ltd. | Swash plate angle control mechanism of hydraulic continuously variable transmission |
| US20020014149A1 (en) * | 2000-08-01 | 2002-02-07 | Carsten Fiebing | Hydrostatic variable displacement pump having springs arranged outside the servocylinder pressure chamber |
| US20060174614A1 (en) * | 2005-02-08 | 2006-08-10 | Xingen Dong | Control devices for swashplate type variable displacement piston pump |
| CN101326364A (en) * | 2006-03-10 | 2008-12-17 | 布鲁宁赫斯海诺马帝克有限公司 | Combined pump housing for several rated quantities |
| CN201218171Y (en) * | 2008-07-09 | 2009-04-08 | 宁波恒力液压机械制造有限公司 | Unidirectional hydraulic axial variable displacement plunger pump |
| CN103291575A (en) * | 2013-05-29 | 2013-09-11 | 宁波恒力液压股份有限公司 | Electric proportional variable axial plunger pump |
| CN204371654U (en) * | 2014-12-30 | 2015-06-03 | 南京萨伯工业设计研究院有限公司 | Electromagnetic switch oblique plate plunger pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757372A (en) * | 2018-05-24 | 2018-11-06 | 同济大学 | A kind of plunger pump of stepper motor and lead screw driving |
| CN109441752A (en) * | 2018-09-30 | 2019-03-08 | 江苏金陵智造研究院有限公司 | A kind of hydraulic servo control system servopump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204371654U (en) | Electromagnetic switch oblique plate plunger pump | |
| CN104329241A (en) | Low-pressure automatic two-way pump | |
| CN203584943U (en) | Change-over valve and load sensitive system with same | |
| CN107355665A (en) | A kind of lubricating oil pump combination valve | |
| CN102644575B (en) | Connecting rod sliding shoe type flow distribution radial plunger pump | |
| CN203114547U (en) | Valve control axial plunger pump | |
| CN104533781A (en) | Electromagnetic reversing swash plate plunger pump and control method thereof | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN203867846U (en) | Hydraulic plunger pump power control device | |
| RU2018131919A (en) | COMPRESSOR LUBRICATION SYSTEM | |
| CN104533740A (en) | Servo variable swash plate piston pump and control method thereof | |
| CN104234993A (en) | Hydraulic piston pump power control device and hydraulic piston pump power control method | |
| CN104533741A (en) | Servo control variable piston pump and control method thereof | |
| CN204371572U (en) | Servo variable displacement oblique plate plunger pump | |
| CN204371573U (en) | Servocontrol Variable plunger pump | |
| CN107317252B (en) | Switchgear | |
| CN204163974U (en) | Plunger pump | |
| CN102933850B (en) | Valve arrangement for a scroll refrigeration compressor | |
| CN206268059U (en) | A kind of membrane pump pressure relief and membrane pump | |
| CN104564578A (en) | Manual variable oil pump | |
| CN107288858A (en) | A kind of disphragm pump for water purifier | |
| AU2007271190B2 (en) | Hydraulic pump | |
| CN107293419B (en) | Breaker | |
| CN204371577U (en) | Oil hydraulic pump pump oil reversing arrangement | |
| CN104895754B (en) | An axial plunger and radial plunger combined hydraulic pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
|
| WD01 | Invention patent application deemed withdrawn after publication |