CN108150374A - The axis distributing construction and closed type hydraulic pump of a kind of closed type hydraulic pump - Google Patents
The axis distributing construction and closed type hydraulic pump of a kind of closed type hydraulic pump Download PDFInfo
- Publication number
- CN108150374A CN108150374A CN201711408121.XA CN201711408121A CN108150374A CN 108150374 A CN108150374 A CN 108150374A CN 201711408121 A CN201711408121 A CN 201711408121A CN 108150374 A CN108150374 A CN 108150374A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- pintle
- hydraulic pump
- spring
- closed type
- 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
- 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
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
-
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of axis distributing construction of closed type hydraulic pump, including：Housing；Pintle is equipped in the side of pintle with chute, and the pintle realizes the sucking of hydraulic oil and discharge by matching chute, and two axially distributed check valves are equipped in pintle, and the pintle realizes the draining of Closed Hydraulic pump case by check valve.The axis distributing construction of this closed type hydraulic pump have the advantages that highly-integrated functions, with oily effect it is accurate, reduce the quality and volume of the pump housing.
Description
Technical field
The invention belongs to manual enclosed pump technical fields, are related to the axis distributing construction and Closed Hydraulic of a kind of closed type hydraulic pump
Pump.
Background technology
The present invention designs a kind of axis distributing construction of novel closed type hydraulic pump, improves such hand by this novel flow divider shaft
The flow mode of dynamic enclosed pump, is optimized its structure, highly-integrated functions.
Invention content
The purpose of the present invention is being directed to existing technology, there are the above problems, it is proposed that a kind of highly-integrated functions are matched
Oily effect is accurate, reduces the axis distributing construction of the closed type hydraulic pump of the quality of the pump housing and volume.
The purpose of the present invention can be realized by following technical proposal：A kind of axis distributing construction of closed type hydraulic pump, including：
Housing；
Pintle is equipped in the side of pintle with chute, and the pintle realizes the suction of hydraulic oil by matching chute
Enter and discharge, two axially distributed check valves are equipped in pintle, the pintle realizes enclosed liquid by check valve
The draining of press pump housing.
As a further improvement on the present invention, two check valve Parallel Symmetrics are arranged in pintle, the check valve packet
Include unidirectional steel ball, unidirectional spring, the connector being axially sequentially distributed along pintle, the unidirectional spring be connected to unidirectional steel ball and
It is resetted between connector and after being used to implement unidirectional steel ball action.
As the further improvement of the present invention, described unidirectional spring one end passes through unidirectional spring seat and corresponding unidirectional steel ball
Docking, the other end, which abuts directly against, to be correspondingly connected on part, and the unidirectional spring is set in outside corresponding unidirectional spring seat, described unidirectional
Steel ball part is caught in the middle part of corresponding unidirectional spring seat.
As the further improvement of the present invention, the link position of the connector outer wall and pintle inner wall is provided with close
Seal.
A kind of closed type hydraulic pump, including：
Housing；
Pintle is equipped in the side of pintle with chute, and the pintle realizes the suction of hydraulic oil by matching chute
Enter and discharge, two axially distributed check valves are equipped in pintle, the pintle realizes enclosed liquid by check valve
The draining of press pump housing；
Rear cover is connected with housing, is integrated with a reversal valve in rear cover, and the reversal valve is by the hydraulic oil controlling party that pumps
To and be used to implement the conversion pumped between different hydraulic fluid port high-low pressures, the reversal valve, which is included under high pressure oil effect, can control shifting
Dynamic spool and the resetting structure for being resetted after spool action；
Safety valve is integrally disposed in rear cover, and when pumping high pressure hydraulic fluid port hypertonia, the safety valve is opened and by high pressure
Oil imports housing.
As a further improvement on the present invention, the reversal valve further includes symmetrical two commutation groups for being divided to row spool both sides
Part, the commutation steel ball that the commutation component includes and spool connects and the reversal valve being arranged between commutation steel ball and spool
Seat, the commutation valve seat tight seal are mounted in rear cover, and the resetting structure is and two commutation steel balls one-to-one two
A commutation resetting spring, the commutation resetting spring are arranged on the rear position of corresponding commutation steel ball principle spool and for resetting
Commutate steel ball.
As the further improvement of the present invention, the commutation resetting spring passes through spring base and the corresponding steel ball company of commutating
It connects, the steel ball part is caught in corresponding commutation spring base.
As a further improvement on the present invention, the safety valve includes the safety spring, safe steel ball, safety being sequentially distributed
Valve seat, described safety spring one end and safe steel ball offset, and the other end and rear cover correspond to inner wall position and offset, the safe steel ball
Part is caught in emergency valve seat.
As the further improvement of the present invention, the safety spring is docked by safety spring seat and safe steel ball, institute
It states safety spring to be set in outside safety spring seat, the safe steel ball part is caught in the middle part of corresponding safety spring seat.
As the further improvement of the present invention, the link position of the emergency valve seat outer wall and rear cover inner wall is provided with O
Type circle.
Based on above-mentioned technical proposal, the embodiment of the present invention can at least generate following technique effect：
1st, the axis distributing construction of this closed type hydraulic pump is pumped suitable for manual enclosed, is optimized by a modified with chute
The structure of closed type hydraulic pump reduces the quality and volume of the pump housing, and the side of pintle is arranged on chute, and check valve, which is arranged on, matches
It flows the inside of axis and is set as symmetrical two, this pintle completes the suction of hydraulic oil by be opened in its side with chute
Enter and discharge；Meanwhile realize the function of the pump case draining by two Simple one-way valves, effectively prevent enclosure interior pressure
The excessively high injury caused by pump of power, eliminates unloading port, can meet overall compact installation environment；At the same time, this is unidirectional
Valve can complete the conversion of the hydraulic oil of enclosure interior and the high and low pressure oil of internal system, can both reduce internal system hydraulic pressure
The temperature of oil, and can be significantly more efficient to provide guarantor for the pump with top-up system inside because hydraulic oil loses caused by leakage
Shield, the integrated height of axis distributing construction of this closed type hydraulic pump, functional diversities are accurate with oily effect, reduce to installation environment
Requirement, while provide protection to the pump, improve its service life, reduce the probability to go wrong during use.
2nd, this closed type hydraulic pump integral structure layout is compact, and reliable protection is provided for integral pump, is integrated in rear cover
One reversal valve, the reversal valve is by hydraulic oil control direction, so as to fulfill the conversion between different hydraulic fluid port high-low pressures；Meanwhile
A safety valve is also integrated in rear cover, in high pressure hydraulic fluid port hypertonia, which will open, thus by high pressure oil
It imports in housing, effectively prevents the pump due to damage caused by super-pressure or compression shock；The enclosed liquid that the present invention designs
The integrated height of press pump, reversal valve and safety valve is highly integrated in rear cover, and functional diversities and control mode intelligence, are whole
Pump provides reliable protection, improves the service life of whole pump.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the structure diagram of the axis distributing construction of closed type hydraulic pump in a preferred embodiment of the present invention.
Fig. 2 is the partial structural diagram of the axis distributing construction of closed type hydraulic pump in a preferred embodiment of the present invention.
Fig. 3 be in Fig. 2 A-A to sectional view.
Fig. 4 is the part-structure schematic diagram of closed type hydraulic pump in a preferred embodiment of the present invention.
Fig. 5 is the structure diagram at another visual angles of Fig. 4.
In figure, 10, pintle；11st, with chute；20th, check valve；21st, unidirectional steel ball；22nd, unidirectional spring；23rd, connector；
24th, unidirectional spring seat；25th, sealing ring；30th, rear cover；40th, reversal valve；41st, spool；42nd, commutate steel ball；43rd, commutate valve seat；44、
Commutate resetting spring；45th, commutate spring base；50th, safety valve；51st, safety spring；52nd, safe steel ball；53rd, emergency valve seat；54、
Safety spring seat；55th, O-ring.
Specific embodiment
The following is specific embodiments of the present invention and with reference to attached drawing, technical scheme of the present invention is further described,
But the present invention is not limited to these embodiments.
Technical solution provided by the invention is illustrated in more detail with reference to Fig. 1 to Fig. 5.
As shown in Figure 1 to Figure 3, the axis distributing construction of this closed type hydraulic pump and closed type hydraulic pump include：
Housing (not shown)；
Pintle 10, is arranged in housing, is equipped in the side of pintle 10 with chute 11, the pintle 10 is by matching
Chute 11 realizes the sucking of hydraulic oil and discharge, and axially distributed two check valves 20 are equipped in pintle 10, described
Pintle 10 realizes the draining of Closed Hydraulic pump case by check valve 20, meanwhile, the check valve 20 can be completed in housing
The conversion of the hydraulic oil in portion and the high and low pressure oil of external system.
The present invention protects a kind of axis distributing construction of closed type hydraulic pump, is pumped suitable for manual enclosed, passes through a modified
Optimize the structure of closed type hydraulic pump with chute 11, reduce the quality and volume of the pump housing, pintle 10 is arranged on chute 11
Side, as shown in figure 3, the region without hatching is with 11 flow region of chute；Check valve 20 is arranged on the interior of pintle 10
Portion and be set as symmetrical two, this pintle 10 by be opened in its side with chute 11 come complete the sucking of hydraulic oil and
Discharge；Meanwhile as shown in Figure 1, realize the function of the pump case draining by two Simple one-way valves 20, shell is effectively prevented
Internal portion hypertonia is injured caused by pump, is eliminated unloading port, can be met overall compact installation environment；It is same with this
When, which can complete the conversion of the hydraulic oil of enclosure interior and the high and low pressure oil of internal system, can both reduce and be
The temperature of system internal hydraulic pressure oil, and can be significantly more efficient to be somebody's turn to do with top-up system inside because hydraulic oil loses caused by leakage
Pump provides protection, and the integrated height of axis distributing construction of this closed type hydraulic pump, functional diversities are accurate with oily effect, reduce
Requirement to installation environment, while protection is provided to the pump, its service life is improved, is gone wrong during reduction use general
Rate.
As a kind of preferred or optional embodiment, two 20 Parallel Symmetrics of check valve are arranged in pintle 10, described
Check valve 20 includes the unidirectional steel ball 21, unidirectional spring 22, the connector 23 that are axially sequentially distributed along pintle 10, and connector 23 is inserted
It is located on pintle 10 and pintle 10 is stretched out in part, the docking of convenient and external component ensures the reliability that pintle 10 connects
And compactness, the unidirectional spring 22 are connected between unidirectional steel ball 21 and connector 23 and are used to implement unidirectional steel ball 21 and act
After reset.
Such 20 structure of check valve arrangement is compacter, simple, can not only reliably realize case drain function, moreover it is possible to complete
Into the conversion of enclosure interior hydraulic oil and the height pressure oil of internal system, enclosure interior hypertonia is prevented, is preferably protected whole
Body fluid press pump.
Further, it is the reliability for ensureing to connect, unidirectional steel ball 21 is avoided to slip, preferably uni-directional 22 one end of spring passes through
Unidirectional spring seat 24 and corresponding unidirectional steel ball 21 dock, and the other end, which abuts directly against, to be correspondingly connected on part 23, the unidirectional spring
22 are set in outside corresponding unidirectional spring seat 24, and unidirectional 21 part of steel ball is caught in corresponding 24 middle part of unidirectional spring seat.
The leakproofness and reliability connected to ensure connector 23 and pintle 10, preferably 23 outer wall of connector and pintle
The link position of 10 inner walls is provided with sealing ring 25, avoids connector 23 is axial from slipping.
The present invention also protects a kind of closed type hydraulic pump, including：
Housing (not shown)；
Pintle 10, is arranged in housing, is equipped in the side of pintle 10 with chute 11, the pintle 10 is by matching
Chute 11 realizes the sucking of hydraulic oil and discharge, and axially distributed two check valves 20 are equipped in pintle 10, described
Pintle 10 realizes the draining of Closed Hydraulic pump case by check valve 20, meanwhile, the check valve 20 can be completed in housing
The conversion of the hydraulic oil in portion and the high and low pressure oil of external system；
Rear cover 30 is connected with housing, is integrated with a reversal valve 40 in rear cover 30, and the reversal valve 40 is by the hydraulic pressure that pumps
Oily control direction is simultaneously used to implement the conversion pumped between different hydraulic fluid port high-low pressures, and the reversal valve 40 is included under high pressure oil effect
The spool 41 that can be moved left and right and the resetting structure for being resetted after the action of spool 41；
Safety valve 50 is integrally disposed in rear cover 30, and when pumping high pressure hydraulic fluid port hypertonia, the safety valve 50 is opened simultaneously
High pressure oil is imported into housing.
With reference to shown in Fig. 4 and Fig. 5, closed type hydraulic pump of the invention is preferably applied to manual enclosed pump, integral structure layout
It is compact, reliable protection is provided for integral pump, as shown in figure 4, in the rear cover 30, is integrated with a reversal valve 40, this is changed
To valve 40 by hydraulic oil control direction, so as to fulfill the conversion between different hydraulic fluid port high-low pressures；Simultaneously as shown in figure 5, in rear cover
In 30, a safety valve 50 is also integrated with, in high pressure hydraulic fluid port hypertonia, which will open, thus by high pressure
Oil is imported in housing, effectively prevents the pump due to damage caused by super-pressure or compression shock；The enclosed that the present invention designs
The integrated height of Highgrade integration rear cover structure of hydraulic pump, reversal valve 40 and safety valve 50 is highly integrated in rear cover 30, work(
Energy diversification and control mode intelligence provide reliable protection for whole pump, improve the service life of whole pump.
Further, so that over all Integrationization is better, ensure the reliability of work, preferably reversal valve 40 further includes
Symmetrical two components that commutate for being divided to 41 both sides of row spool, the commutation component includes and spool 41 connects commutation steel ball 42 and
The commutation valve seat 43 being arranged between commutation steel ball 42 and spool 41,43 tight seal of the commutation valve seat are mounted on rear cover 30
Interior, the resetting structure is and two commutation steel balls, 42 one-to-one two commutation resetting springs 44, the commutation reset bullet
Spring 44 is arranged on the rear position of corresponding commutation 42 principle spool 41 of steel ball and for resetting commutation steel ball 42.
41 both ends of spool have relatively narrow contact rod structure, and contact rod structure passes through commutation valve seat 43 and can commutate with corresponding
Steel ball 42 contacts；During work, spool 41 can move left and right under the action of high pressure oil, and in commutation resetting spring 44
Middle position is returned under effect.
And, it is worth mentioning at this point that：Burr is gone totally with the position that contacts of commutation steel ball 42, and with press and commutation
Steel ball 42 is pressed chamfering is mating.
Further, it is the reliability that ensures connection, steel ball is avoided to slip, ensures limit effect and spring restoring force
It transmits, the resetting spring 44 that preferably commutates is connected by the spring base 45 that commutates with corresponding steel ball, and the steel ball part is caught in correspondence and changes
Into spring base 45.
For effectively prevent integral pump due to caused by super-pressure or compression shock damage, it is preferable that safety valve 50 include according to
Safety spring 51, safe steel ball 52, the emergency valve seat 53 of secondary distribution, described 51 one end of safety spring and safe steel ball 52 offset,
The other end and rear cover 30 correspond to inner wall position and offset, and safe 52 part of steel ball is caught in emergency valve seat 53, and all parts connect
Connect close, reliable operation.
Further, it is the compactness for ensureing steel-ball limiting effect and connecting, safety spring 51 passes through safety spring seat 54
It is docked with safe steel ball 52, the safety spring 51 is set in outside safety spring seat 54, and safe 52 part of steel ball is caught in pair
Answer 54 middle part of safety spring seat.
To ensure the reliability of work, the link position of 30 inner wall of 53 outer wall of emergency valve seat and rear cover is provided with O-ring 55.
In addition, in safety valve 50, the position contacted with safe steel ball 52 is also intended to burr to go totally, and with press and
Safe steel ball 52 is pressed chamfering is mating.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of axis distributing construction of closed type hydraulic pump, including：
Housing；
It is characterized in that：Pintle is equipped in the side of pintle with chute, and the pintle realizes hydraulic pressure by matching chute
The sucking and discharge of oil, are equipped with two axially distributed check valves in pintle, and the pintle is realized by check valve
The draining of Closed Hydraulic pump case.
2. a kind of axis distributing construction of closed type hydraulic pump according to claim 1, it is characterised in that：Two check valves are parallel
It is symmetricly set in pintle, the check valve includes the unidirectional steel ball, unidirectional spring, connection being axially sequentially distributed along pintle
Part, the unidirectional spring are connected between unidirectional steel ball and connector and are resetted after being used to implement unidirectional steel ball action.
3. a kind of axis distributing construction of closed type hydraulic pump according to claim 2, it is characterised in that：The unidirectional spring one
End is docked by unidirectional spring seat and corresponding unidirectional steel ball, and the other end, which abuts directly against, to be correspondingly connected on part, the unidirectional spring
It is set in outside corresponding unidirectional spring seat, the Unidirectional steel ball portion is caught in the middle part of corresponding unidirectional spring seat.
4. a kind of axis distributing construction of closed type hydraulic pump according to claim 2, it is characterised in that：The connector outer wall
The link position of pintle inner wall is provided with sealing ring.
5. a kind of Claims 1-4 any one of them closed type hydraulic pump, including：
Housing；
It is characterized in that：Pintle is equipped in the side of pintle with chute, and the pintle realizes hydraulic pressure by matching chute
The sucking and discharge of oil, are equipped with two axially distributed check valves in pintle, and the pintle is realized by check valve
The draining of Closed Hydraulic pump case；
Rear cover is connected with housing, is integrated with a reversal valve in rear cover, the reversal valve by the hydraulic oil control direction that pumps simultaneously
The conversion pumped between different hydraulic fluid port high-low pressures is used to implement, the reversal valve is included in what can be moved left and right under high pressure oil effect
Spool and the resetting structure for being resetted after spool action；
Safety valve is integrally disposed in rear cover, and when pumping high pressure hydraulic fluid port hypertonia, the safety valve is opened and leads high pressure oil
Enter housing.
6. a kind of closed type hydraulic pump according to claim 5, it is characterised in that：The reversal valve, which further includes, symmetrically divides row valve
Two of core both sides commutation components, the commutation component includes and spool connects commutation steel ball and be arranged on commutation steel ball and
Commutation valve seat between spool, the commutation valve seat tight seal are mounted in rear cover, and the resetting structure is and two commutate
The one-to-one two commutations resetting spring of steel ball, after the commutation resetting spring is arranged on corresponding commutation steel ball principle spool
It puts and is used to reset commutation steel ball in orientation.
7. a kind of closed type hydraulic pump according to claim 6, it is characterised in that：The commutation resetting spring passes through the bullet that commutates
Spring abutment is connected with corresponding steel ball, and the steel ball part is caught in corresponding commutation spring base.
8. a kind of closed type hydraulic pump according to claim 5, it is characterised in that：The safety valve includes the peace being sequentially distributed
Full spring, safe steel ball, emergency valve seat, described safety spring one end and safe steel ball offset, and the other end and rear cover correspond to inner wall
Position offsets, and the safe steel ball part is caught in emergency valve seat.
9. a kind of closed type hydraulic pump according to claim 8, it is characterised in that：The safety spring passes through safety spring seat
It is docked with safe steel ball, the safety spring is set in outside safety spring seat, and the safe steel ball part is caught in corresponding safe bullet
In the middle part of spring abutment.
10. a kind of closed type hydraulic pump according to claim 8, it is characterised in that：In the emergency valve seat outer wall and rear cover
The link position of wall is provided with O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711408121.XA CN108150374A (en) | 2017-12-22 | 2017-12-22 | The axis distributing construction and closed type hydraulic pump of a kind of closed type hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711408121.XA CN108150374A (en) | 2017-12-22 | 2017-12-22 | The axis distributing construction and closed type hydraulic pump of a kind of closed type hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150374A true CN108150374A (en) | 2018-06-12 |
Family
ID=62465360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711408121.XA Pending CN108150374A (en) | 2017-12-22 | 2017-12-22 | The axis distributing construction and closed type hydraulic pump of a kind of closed type hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150374A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979993A (en) * | 2018-07-04 | 2018-12-11 | 九江中船消防设备有限公司 | A kind of high-pressure bench scale pump group unit shaft flow distribution apparatus |
| CN109340041A (en) * | 2018-11-20 | 2019-02-15 | 兰州理工大学 | A kind of sliding-vane motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6040784A (en) * | 1983-08-15 | 1985-03-04 | Hitachi Constr Mach Co Ltd | Radial piston type hydraulic motor |
| CN201531384U (en) * | 2009-09-29 | 2010-07-21 | 上海融德机电工程设备有限公司 | Hydraulic hand-operated pump used for driving hydraulic actuating element |
| CN204458235U (en) * | 2014-12-19 | 2015-07-08 | 天津工程机械研究院 | Radial plunger pump |
| CN204627968U (en) * | 2015-05-13 | 2015-09-09 | 山东德方液压机械股份有限公司 | Small displacement radial plunger pump |
| CN106150960A (en) * | 2015-04-21 | 2016-11-23 | 山东鄄城海驰船用液压机械厂 | A kind of monoblock type Portable manpower pump |
-
2017
- 2017-12-22 CN CN201711408121.XA patent/CN108150374A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6040784A (en) * | 1983-08-15 | 1985-03-04 | Hitachi Constr Mach Co Ltd | Radial piston type hydraulic motor |
| CN201531384U (en) * | 2009-09-29 | 2010-07-21 | 上海融德机电工程设备有限公司 | Hydraulic hand-operated pump used for driving hydraulic actuating element |
| CN204458235U (en) * | 2014-12-19 | 2015-07-08 | 天津工程机械研究院 | Radial plunger pump |
| CN106150960A (en) * | 2015-04-21 | 2016-11-23 | 山东鄄城海驰船用液压机械厂 | A kind of monoblock type Portable manpower pump |
| CN204627968U (en) * | 2015-05-13 | 2015-09-09 | 山东德方液压机械股份有限公司 | Small displacement radial plunger pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979993A (en) * | 2018-07-04 | 2018-12-11 | 九江中船消防设备有限公司 | A kind of high-pressure bench scale pump group unit shaft flow distribution apparatus |
| CN109340041A (en) * | 2018-11-20 | 2019-02-15 | 兰州理工大学 | A kind of sliding-vane motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108150374A (en) | The axis distributing construction and closed type hydraulic pump of a kind of closed type hydraulic pump | |
| CA2431225A1 (en) | Hydraulic energy storage systems | |
| CN108012550B (en) | Double pump withdrawing fluid pump | |
| CN210396915U (en) | Fuel steam treatment system and automobile | |
| CN102612445A (en) | Energy storage system including pressurized reservoir | |
| CN106641347A (en) | Pressure-relief one-way valve | |
| CN106654142A (en) | Liquid injection device | |
| WO2011008715A3 (en) | Dispensing pump | |
| CN205863286U (en) | Priming device | |
| CN108223473A (en) | A kind of one way sequence valve | |
| CN210106194U (en) | Novel double-end volute pump | |
| CN211096422U (en) | Medical center suction system | |
| CN210440102U (en) | Urea conveying pumpback pump core, device and SCR system | |
| CN108150373B (en) | A kind of Highgrade integration rear cover structure of closed type hydraulic pump | |
| CN206617387U (en) | A kind of double acting telescopic oil cylinder | |
| CN201925538U (en) | Oxygen valve | |
| CN204713036U (en) | Pedal inflating carwash double purpose device | |
| CN201874811U (en) | Gear pump with built-in check valve | |
| CN201412410Y (en) | Cylinder | |
| CN208416914U (en) | High pressure liquid housing structure and Vertical Combination valve group | |
| CN210265952U (en) | Normally open air return valve | |
| CN208950989U (en) | A kind of closed fuel tank | |
| CN207349512U (en) | A kind of attraction permanent magnetic spring check valve | |
| CN109854808A (en) | A kind of highly integrated formula electromechanical static pressure driving device | |
| CN111167260A (en) | Molecular sieve gas circuit control device and oxygenerator |
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: 20180612 |