CN107327554A - A kind of plunger pump transmission device - Google Patents
A kind of plunger pump transmission device Download PDFInfo
- Publication number
- CN107327554A CN107327554A CN201610282368.0A CN201610282368A CN107327554A CN 107327554 A CN107327554 A CN 107327554A CN 201610282368 A CN201610282368 A CN 201610282368A CN 107327554 A CN107327554 A CN 107327554A
- Authority
- CN
- China
- Prior art keywords
- eccentric
- power
- transmission device
- executive module
- rotation
- 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
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
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of plunger pump transmission device, including drive device, the pump housing, in addition to power executive module, the power executive module is included in reciprocating guide rod shaft, eccentric disc, eccentric shaft in the pump housing；One end that the guide rod shaft stretches out the pump housing swings hole provided with circular；The eccentric disc is circle, and the eccentric disc is placed in the swing hole and is rotatably connected；Circular offset hole is offered on the eccentric disc, the axis of rotation of the eccentric orfice is parallel with the axis of rotation of the eccentric disc；The eccentric shaft includes clutch end and power intake, and the clutch end is placed in the eccentric orfice and rotatable connection, and the power intake is connected with the drive device.The plunger pump transmission device not only can be with prolonged application in low discharge area, and can apply to big flow area, and service life is long, while compact conformation, small volume.
Description
Technical field
The present invention relates to a kind of power conveying device of liquid, more particularly to a kind of plunger pump transmission device.
Background technology
Prepare chromatogram industry, overcritical industry in recent years to develop rapidly, the development of conventional petroleum chemical industry is needed
Ask, especially high pressure fracture demand pump in shale oil field is, it is necessary to which big flow pulse free conveys chemical mediator high-pressure column
Fill in pump, pressure limit 5MPa~100MPa.Range of flow is divided to two grades：Low discharge area laboratory class,
0.01~500mL/min；Big flow industry manufacture class, 0.5~50L/min.Pumped (conveying) medium be water,
Methanol, acetone, propylene, butane, liquid carbon dioxide etc., typically for system stability requirement pulse free
Conveying.
In low discharge area：Cam structure transmission device plunger pump constant flow pump is currently mainly used, especially in height
Pressure chromatography (HPLC) industry occupies mainstream market with lobe pump of connecting, due to HPLC industry media
For high-purity first alcohol and water, and discontinuously use, cam structure transmission is sufficient for use demand.But this
The constant flow pump of kind structure is not appropriate for long-term constant current occasion and used, and longtime running easily causes cam pair mill
Damage, spring fatigue.Simultaneously because cam drive has pressure angle, laterally abrasion and feeding essence can be also caused
Degree loss, a series of problems, such as in turn resulting in thinner pipeline blockage.
In big flow area：Due to load increase, the plunger pump of cam gear be cam directly and plunger
The higher pair driving of bar linear contact lay formation is taken turns, contact stress, which is limited, uses scope, is not suitable for high-pressure high-flow
Occasion, in addition lobe pump back-moving spring impulse stroke increase load, in retracting spring potential energy it cannot be guaranteed that
Plunger is set to reset completely.Therefore, it is current based on traditional crank linkage in big flow area, but it is bent
Handle linkage can produce 17%~30% horizontal offset loading force, add abrasion, and toggle is difficult
To realize dynamic balancing；Meanwhile, brace and connecting rod framework can increase axial dimension, in turn result in equipment volume compared with
Greatly.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of plunger pump transmission device, not only can be long-term
Applied to low discharge area, and big flow area is can apply to, service life is long, while compact conformation,
Small volume.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of plunger pump transmission device, including
Drive device, the pump housing, unlike the prior art, in addition to power executive module, the power is held
Row component is included in reciprocating guide rod shaft, eccentric disc, eccentric shaft in the pump housing；The guide rod shaft
The one end for stretching out the pump housing swings hole provided with circular；The eccentric disc is circle, and the eccentric disc is placed in
In the swing hole and it is rotatably connected；Circular offset hole is offered on the eccentric disc, the eccentric orfice
Axis of rotation is parallel with the axis of rotation of the eccentric disc, and distance between the two is the first offset distance；It is described
Eccentric shaft includes clutch end and power intake, the clutch end be placed in the eccentric orfice and
Rotatable connection, the power intake is connected with the drive device, the gyroaxis of the power intake
Line is parallel with the axis of rotation of the clutch end and distance between the two is the second offset distance；Described
One offset distance is equal with second offset distance.
The beneficial effects of the invention are as follows：The eccentric disc is placed in the swing hole and is rotatably connected, bias
The clutch end of axle is placed in the eccentric orfice and rotatable connection, is low secondary connection, and bearing capacity is big；
Toggle is eliminated simultaneously, axial dimension is greatly reduced, and then reduces equipment volume；First
Offset distance is equal with the second offset distance, it is ensured that guide rod shaft only moves reciprocatingly in the pump housing, without laterally
Power.Whole mechanism realizes low secondary sine mechanism transmission, and bearing capacity is greatly increased, and is easily achieved dynamic
Balance, and overcomes the problems such as cross force of toggle is big, axial dimension is big, not only can be with
Prolonged application can also be applied to big flow area in low discharge area.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the power executive module also includes eccentric swing bearing, the eccentric swing bearing
Outer wall and the inwall in the swing hole are connected, inwall and the eccentric disc of the eccentric swing bearing
Outer wall be connected.
Further, the power executive module is also held including eccentric axis of rotation, what the eccentric axis of rotation was held
The inwall of outer wall and the eccentric orfice is connected, and the inwall that the eccentric axis of rotation is held and the power are defeated
The outer wall for going out end is connected.
Beneficial effect using the upper further scheme of two steps is to rotate junction increase bearing, Ke Yizeng
Plus contact stiffness, gap is eliminated, efficiency is improved, while improving the service life of equipment.
Further, the dynamic executive module is two groups, and the pump housing is led described in two, two groups
Bar axle is corresponded respectively to move reciprocatingly in two pump housings, the drive device simultaneously with two groups
The power intake in the power executive module connects and drives it to rotate.
It is to realize duplex plunger pump using the beneficial effect of above-mentioned further scheme, output stream can be improved
Amount.
Further, in addition to power transfer assembly, the power transfer assembly include a driving gear and
Two driven gears, two driven gears are engaged with the driving gear simultaneously, and respectively with two
The power intake in the group power executive module is fixedly connected, and the driving gear drives with described
Dynamic device connection, the drive device drives the driving gear rotation.
Beneficial effect using above-mentioned further scheme is, using meshed transmission gear, while driving power
Executive module drives plunger to move back and forth, and realizes the stable power transmission of duplex plunger pump.
Further, two driven gears are pitch curve identical non-circular gear, and the pitch curve is
Axially symmetric structure.
Beneficial effect using above-mentioned further scheme is, the non-circular gear easy processing of symmetrical structure, Yi Wei
Shield, it is easy to install, interchangeability is also preferable, while realizing the steady superposition of twin-tub flow, flow velocity, pulse free
Output.
Further, include the suction line and discharge pipe of medium, two pump housings be equipped with suction inlet and
Outlet, two suction inlets connects with the suction line simultaneously, two outlets and meanwhile with institute
State discharge pipe connection.
Beneficial effect using above-mentioned further scheme is, by being connected in parallel for the pump housing, realizes twin-tub simultaneously
Connection output, to improve output flow, meets the demand of big flow.
Brief description of the drawings
A kind of section view signal of the embodiment for plunger pump transmission device that Fig. 1 provides for the present invention
Figure；
Fig. 2 is the dimensional structure diagram of embodiment shown in Fig. 1；
Fig. 3 is the explosive view of embodiment shown in Fig. 1；
Fig. 4 is the assembling schematic diagram of the power executive module 3；
Fig. 5 is the structural representation of the power transfer assembly 6；
Fig. 6 is the pipeline connection diagram of the pump housing 2 of embodiment shown in Fig. 1.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, drive device, 2, the pump housing, 3, power executive module, 4, eccentric swing bearing, 5, partially
Heart floating bearing, 6, power transfer assembly, 7, suction line, 8, discharge pipe, 9, symmetry axis, 21,
Suction inlet, 22, outlet, 31, guide rod shaft, 32, eccentric disc, 33, eccentric shaft, 61, driving tooth
Wheel, 62, driven gear, 311, swing hole, 321, eccentric orfice, 331, clutch end, 332,
Power intake.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
As shown in Figures 1 to 6, the specific reality for a kind of plunger pump transmission device that Fig. 1 provides for the present invention
Apply the schematic cross-sectional view of mode；Fig. 2 is the dimensional structure diagram of embodiment shown in Fig. 1；Figure
3 be the explosive view of embodiment shown in Fig. 1；Fig. 4 shows for the assembling of the power executive module 3
It is intended to；Fig. 5 is the structural representation of the power transfer assembly 6；Fig. 6 is to be embodied shown in Fig. 1
The pipeline connection diagram of the pump housing 2 of mode.
In a kind of embodiment of plunger pump transmission device provided by the present invention, including driving
Device 1, the pump housing 2, in addition to power executive module 3, the power executive module 3 are included in the pump
Reciprocating guide rod shaft 31, eccentric disc 32, eccentric shaft 33 in body 2；The guide rod shaft 31 stretches out institute
The one end for stating the pump housing 2 swings hole 311 provided with circular；The eccentric disc 32 is circle, the eccentric disc
32 are placed in the swing hole 311 and rotatable connection；Circular offset hole is offered on the eccentric disc 32
321, the axis of rotation of the eccentric orfice 321 is parallel with the axis of rotation of the eccentric disc 32, both it
Between distance be the first offset distance；The eccentric shaft 33 includes clutch end 331 and power intake 332,
The clutch end 331 is placed in the eccentric orfice 321 and rotatable connection, the power intake 332
It is connected with the drive device 1, axis of rotation and the clutch end of the power intake 332
331 axis of rotation is parallel and distance between the two is the second offset distance；First offset distance and described the
Two offset distances are equal.The power executive module 3 also includes eccentric swing bearing 4, the eccentric swing axle
Hold 4 outer wall to be connected with the inwall in the swing hole 311, the inwall of the eccentric swing bearing 4
It is connected with the outer wall of the eccentric disc 32.The power executive module 3 also includes eccentric axis of rotation
5 are held, the eccentric axis of rotation holds 5 outer wall and is connected with the inwall of the eccentric orfice 321, described
Eccentric axis of rotation holds 5 inwall and is connected with the outer wall of the clutch end 331.
The power executive module 3 is two groups, and the pump housing 2 is the guide rod shaft in two, two groups
31 correspond moved reciprocatingly in two pump housings 2 respectively, and the drive device 1 is simultaneously with two
The power intake 332 in the group power executive module 3 connects and drives it to rotate.
Also include power transfer assembly 6, the power transfer assembly 6 includes a driving gear 61 and two
Individual driven gear 62, two driven gears 62 are engaged with the driving gear 61 simultaneously, and point
It is not fixedly connected with the power intake 332 in power executive module 3 described in two groups, the active
Gear 61 is connected with the drive device 1, and the drive device 1 drives the driving gear 61 to rotate.
Two driven gears 62 are pitch curve identical non-circular gear, and the pitch curve be on
The symmetrical axially symmetric structure of symmetry axis 9.
In addition, the pump housing 2 also includes the suction line 7 and discharge pipe 8 of medium, two pump housings 2 are all provided with
There are suction inlet 21 and outlet 22, two suction inlets 21 are connected with the suction line 7 simultaneously, two
The individual outlet 22 is connected with the discharge pipe 8 simultaneously.
In a kind of embodiment of the transmission device of plunger pump provided by the present invention, mainly by one
Individual active non-circular gear drives two passive non-circular gears, three sets of shaftings, active non-circular gear connection master
Dynamic axis, is slowed down by The gear deceleration or worm and gear and is driven by motor, then drive passive non-circular gear.
Two passive non-circular gears are identical, fixed respectively with an eccentric shaft 33 and drive the eccentric shaft 33,
Phase difference is 180 ° between two non-circular gears, when driving wheel rotates to some direction, a post
Plug is marched forward, and another plunger is drawn back, the differential seat angle split using non-circular gear, forms two
Step curve, realizes the advection of plunger pump.
Passive non-circular gear can be accurately positioned on eccentric shaft 33 by screw and pin, that is,
Say, the direction of eccentric shaft 33 will strictly be corresponded to the angle direction of non-circular gear, with position relationship,
Then, eccentric shaft 33 is fixed in shafting by angular contact bearing, and is entered by the clearance for eliminating bearing
Row transmission.
Eccentric swing bearing 4 is housed, eccentric swing bearing 4 is fitted together between eccentric disc 32 and guide rod shaft 31
In the swing hole 311 of guide rod shaft, the eccentric throw of eccentric disc 32 is equal to the eccentric throw of eccentric shaft 33, this
Low secondary sine mechanism motion is formed, bearing capacity is greatly reinforced.This motion is the straight of no connecting rod
Line is moved, due to being advection mechanism, so the torque of output is constant value, due to the tune of non-circular gear
Section is acted on and low-speed machinery, so being a kind of force-increasing mechanism, saves torque more than 30%, cross force phase
When in 1/10 or so of toggle.
Then, two guide rod shafts 31 drive plunger alternating movement in the pump housing, then pass through gateway valve
Alternating suction with discharge, formed two cylinders trapezoidal superimposed curves, be achieved that parallel connection advection.
In a word, a kind of plunger pump transmission device provided by the present invention, employs two passive non-circular gears
Combined with low secondary sine mechanism and realize that pulse free rate curve is superimposed, bearing capacity is high, displacement, speed,
Acceleration is simple sinusoidal curve, and only realizes that big flow pulse free is exported with twin-tub, existing to replace
There is high-pressure high-flow pump to use three cylinders, five cylinders, and constitutional detail is few, small volume.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this hair
Within bright protection domain.
Claims (7)
1. a kind of plunger pump transmission device, including drive device (1), the pump housing (2), its feature exist
In in addition to power executive module (3), the power executive module (3) is included in the pump housing (2)
Interior reciprocating guide rod shaft (31), eccentric disc (32), eccentric shaft (33)；
One end that the guide rod shaft (31) stretches out the pump housing (2) swings hole (311) provided with circular；
The eccentric disc (32) is circle, and the eccentric disc (32) is placed in the swing hole (311)
Interior and rotatable connection；
Circular offset hole (321) is offered on the eccentric disc (32), the eccentric orfice (321)
Axis of rotation is parallel with the axis of rotation of the eccentric disc (32), and distance between the two is the first offset distance；
The eccentric shaft (33) includes clutch end (331) and power intake (332), described
Clutch end (331) is placed in the eccentric orfice (321) and rotatable connection, the power intake
(332) be connected with the drive device (1), the axis of rotation of the power intake (332) with
The axis of rotation of the clutch end (331) is parallel and distance between the two is the second offset distance；
First offset distance is equal with second offset distance.
2. a kind of plunger pump transmission device according to claim 1, it is characterised in that described dynamic
Power executive module (3) is also included outside eccentric swing bearing (4), the eccentric swing bearing (4)
The inwall of wall and the swing hole (311) is connected, the inwall of the eccentric swing bearing (4) with
The outer wall of the eccentric disc (32) is connected.
3. a kind of plunger pump transmission device according to claim 1, it is characterised in that described dynamic
Power executive module (3) is also held (5) including eccentric axis of rotation, and the eccentric axis of rotation holds the outer of (5)
The inwall of wall and the eccentric orfice (321) is connected, the eccentric axis of rotation hold the inwall of (5) with
The outer wall of the clutch end (331) is connected.
4. a kind of plunger pump transmission device according to any one of claims 1 to 3, its feature exists
In the power executive module (3) is two groups, and the pump housing (2) is described in two, two groups
Guide rod shaft (31) is corresponded respectively to move reciprocatingly in two pump housings (2), the driving
Device (1) at the same with the power intake (332) in power executive module (3) described in two groups
Connect and drive it to rotate.
5. a kind of plunger pump transmission device according to claim 4, it is characterised in that also include
Power transfer assembly (6), the power transfer assembly (6) includes a driving gear (61) and two
Individual driven gear (62), two driven gears (62) with the driving gear (61) while nibble
Close, and consolidate respectively with the power intake (332) in power executive module (3) described in two groups
Fixed connection, the driving gear (61) is connected with the drive device (1), the drive device (1)
The driving gear (61) is driven to rotate.
6. a kind of plunger pump transmission device according to claim 5, it is characterised in that two institutes
Driven gear (62) is stated for pitch curve identical non-circular gear, and the pitch curve is axially symmetric structure.
7. a kind of plunger pump transmission device according to claim 6, it is characterised in that also include
The suction line (7) and discharge pipe (8) of medium, two pump housings (2) are equipped with suction inlet (21)
With outlet (22), two suction inlets (21) with the suction line (7) while connect, two
The individual outlet (22) with the discharge pipe (8) while connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282368.0A CN107327554A (en) | 2016-04-29 | 2016-04-29 | A kind of plunger pump transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282368.0A CN107327554A (en) | 2016-04-29 | 2016-04-29 | A kind of plunger pump transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107327554A true CN107327554A (en) | 2017-11-07 |
Family
ID=60192500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610282368.0A Pending CN107327554A (en) | 2016-04-29 | 2016-04-29 | A kind of plunger pump transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107327554A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529352A (en) * | 2019-10-14 | 2019-12-03 | 沙洲职业工学院 | A kind of alternative expression fluid pumping apparatus |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031744A (en) * | 1988-08-18 | 1989-03-15 | 国营五二九厂 | Linearly-adjusted and non-circular gear driven advection pump |
| CN2112705U (en) * | 1992-01-21 | 1992-08-12 | 信长仁 | High pressure multi-purpose reciprocating pump |
| CN2156303Y (en) * | 1993-03-15 | 1994-02-16 | 殷参 | Plunger pump transmission device |
| CN2842005Y (en) * | 2005-06-14 | 2006-11-29 | 广州市群发动力科技有限公司 | A kind of hypocycloid reciprocating pump |
| CN101076682A (en) * | 2004-06-29 | 2007-11-21 | 托马斯·马克·韦内托茨 | Epitrochoidal crankshaft mechanism and method |
| CN203009704U (en) * | 2012-12-05 | 2013-06-19 | 天津市聚能高压泵有限公司 | Spindle transmission mechanism for plunger pump |
| CN203373569U (en) * | 2013-07-15 | 2014-01-01 | 南京中竞科电子科技有限公司 | Double-cavity plunger pumps |
| CN103527758A (en) * | 2013-09-29 | 2014-01-22 | 北京市三一重机有限公司 | Rotary drilling rig and operation device |
| CN204283775U (en) * | 2014-11-28 | 2015-04-22 | 北京创新通恒科技有限公司 | A kind of many pump heads radial plunger pump |
| CN205117648U (en) * | 2015-12-02 | 2016-03-30 | 域鑫科技（惠州）有限公司 | Plunger pump |
-
2016
- 2016-04-29 CN CN201610282368.0A patent/CN107327554A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031744A (en) * | 1988-08-18 | 1989-03-15 | 国营五二九厂 | Linearly-adjusted and non-circular gear driven advection pump |
| CN2112705U (en) * | 1992-01-21 | 1992-08-12 | 信长仁 | High pressure multi-purpose reciprocating pump |
| CN2156303Y (en) * | 1993-03-15 | 1994-02-16 | 殷参 | Plunger pump transmission device |
| CN101076682A (en) * | 2004-06-29 | 2007-11-21 | 托马斯·马克·韦内托茨 | Epitrochoidal crankshaft mechanism and method |
| CN2842005Y (en) * | 2005-06-14 | 2006-11-29 | 广州市群发动力科技有限公司 | A kind of hypocycloid reciprocating pump |
| CN203009704U (en) * | 2012-12-05 | 2013-06-19 | 天津市聚能高压泵有限公司 | Spindle transmission mechanism for plunger pump |
| CN203373569U (en) * | 2013-07-15 | 2014-01-01 | 南京中竞科电子科技有限公司 | Double-cavity plunger pumps |
| CN103527758A (en) * | 2013-09-29 | 2014-01-22 | 北京市三一重机有限公司 | Rotary drilling rig and operation device |
| CN204283775U (en) * | 2014-11-28 | 2015-04-22 | 北京创新通恒科技有限公司 | A kind of many pump heads radial plunger pump |
| CN205117648U (en) * | 2015-12-02 | 2016-03-30 | 域鑫科技（惠州）有限公司 | Plunger pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529352A (en) * | 2019-10-14 | 2019-12-03 | 沙洲职业工学院 | A kind of alternative expression fluid pumping apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107327382A (en) | A kind of Novel plunger pump | |
| CN102562956B (en) | External wave type compound rolling moveable teeth speed reducer | |
| US8496456B2 (en) | Progressive cavity pump including inner and outer rotors and a wheel gear maintaining an interrelated speed ratio | |
| CN107327554A (en) | A kind of plunger pump transmission device | |
| CN103982387A (en) | End cam driving type axial plunger pump adopting rotating window oil distribution | |
| CN103423079B (en) | A kind of bulb stopper radial direction arranges radial ball rolling oil hydraulic motor more | |
| CN102691614B (en) | Double-stator swing hydraulic multi-speed motor | |
| CN204738961U (en) | Variable type gear pump | |
| CN105518354A (en) | Hydrostatic assembly | |
| CN205559184U (en) | Novel plunger pump device | |
| CN206571637U (en) | Single plunger Double-discharge progressive rotation type hydraulic unit driver | |
| CN203836153U (en) | Spiral reduction box | |
| CN103423117B (en) | A kind of conjuncted dock volume adjustable hydraulic pump | |
| CN113236202B (en) | Pulsating wave annular flow generator | |
| CN202327030U (en) | Two-stage reduction gearbox applied to agricultural irrigation driving equipment | |
| CN206487603U (en) | The single amount progressive rotation type hydraulic unit driver of single plunger | |
| CN202946895U (en) | Fixed-flow direction cycloid lubricant pump | |
| CN206487784U (en) | Rotatable reciprocating floating shaft coupling knot | |
| CN102840297A (en) | Switching mechanism provided with adjustable stroke and capable of realizing rotary motion and reciprocating motion | |
| CN114263582B (en) | Plunger structure and double-freedom-degree piston pump | |
| CN203702543U (en) | Eight-blade differential pump driven by sinusoidal non-circular gears | |
| CN103062037A (en) | Axial plunger pump | |
| CN103321741A (en) | Internal-combustion engine device with flywheel guide groove reciprocating piston | |
| CN203730299U (en) | Pascal non-circular gear-driven eight-blade differential pump | |
| CN104265560B (en) | Dual output internal rotor non-conical gear type motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171107 |