CN102734111B - Plunger pump - Google Patents
Plunger pump Download PDFInfo
- Publication number
- CN102734111B CN102734111B CN201110081018.5A CN201110081018A CN102734111B CN 102734111 B CN102734111 B CN 102734111B CN 201110081018 A CN201110081018 A CN 201110081018A CN 102734111 B CN102734111 B CN 102734111B
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- China
- Prior art keywords
- plunger
- oil
- slide block
- eccentric shaft
- oil pocket
- Prior art date
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Links
- 239000000945 filler Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 16
- 239000004519 grease Substances 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000446 fuel Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- -1 wherein Substances 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A kind of plunger pump, comprise eccentric shaft (3), pump unit (1) and oil-storing barrel (2), eccentric shaft is connected to oil-storing barrel through pump unit, pump unit comprises oil suction force feed part (11) and fuel-displaced part (12), eccentric shaft is for driving the part oil suction of oil suction force feed and by fuel-displaced part fuel feeding, oil suction force feed part comprises filler opening (115), oil outlet (112), runner (111), first oil pocket (113), second oil pocket (114), first plunger (41) and the second plunger (42), second plunger is arranged on the side of the second oil pocket, first plunger is arranged on the side of the first oil pocket, the excircle of the first plunger has annular groove (411), inlet port is communicated with the first oil pocket, oil outlet is communicated with annular groove, second oil pocket is communicated with the first oil pocket or annular groove by fluid passage selection ground.By technique scheme, plunger pump functional reliability provided by the invention is higher, and efficiency is better, can meet the fuel feeding demand of large discharge.
Description
Technical field
The present invention relates to lubricant pump, particularly, relate to a kind of plunger pump.
Background technique
At present, the plunger pump for lubrication system uses extensively.Normally, be the oil suction force feed work being realized lubricant oil by the linear reciprocating motion of plunger for the working principle of the pump unit of fuel feeding in plunger pump.Structurally, by means of spring works, will easily there is the problem of spring failure in the oil suction force feed work of the pump unit adopted in current industry, cause the functional reliability of plunger pump low, efficiency is poor usually, and what can not meet large discharge supplies oil require.
Summary of the invention
The object of this invention is to provide a kind of plunger pump, this plunger pump functional reliability is higher, and efficiency is better, can meet the fuel feeding demand of large discharge.
To achieve these goals, the invention provides a kind of plunger pump, this plunger pump comprises eccentric shaft, pump unit and the oil-storing barrel be arranged on above pump unit, described eccentric shaft is connected to described oil-storing barrel through described pump unit, described pump unit comprises oil suction force feed part and fuel-displaced portion, described eccentric shaft is for driving described oil suction force feed part from pump fat absorption in described oil-storing barrel and being confessed by described fuel-displaced part by grease, described oil suction force feed part comprises inlet port, oil outlet, runner, first oil pocket, second oil pocket, first plunger and the second plunger, described second plunger telescopically is arranged on the side of described second oil pocket, described first plunger telescopically is arranged on the side of described first oil pocket, and the excircle of described first plunger has annular groove, described inlet port is communicated with described first oil pocket, oil outlet is communicated with described annular groove, described second oil pocket is communicated with described first oil pocket or described annular groove by described fluid passage selection ground.
Preferably, the opposite side of described first oil pocket is provided with the first shutoff, and the opposite side of described second oil pocket is provided with the second shutoff.
Preferably, described fuel-displaced part has oil discharge passage, and described oil outlet is communicated with described oil discharge passage.
Preferably, described oil suction force feed part and described fuel-displaced part removably link together.
Preferably, described plunger pump also comprises the first slide block and the second slide block, described first plunger and described second plunger are connected respectively to described first slide block and described second slide block, described eccentric shaft has the first eccentric wheel and the second eccentric wheel that are mutually permanently connected, and described first eccentric wheel and described second eccentric wheel drive described first slide block and described second slide block reciprocating linear to move with described first slide block and described second shoe contact respectively.
Preferably, described first slide block and described second slide block are formed as quadra respectively, and this quadra has draw-in groove, and the plunger head of described first plunger and described second plunger is bonded in described draw-in groove respectively.
Preferably, described eccentric shaft is positioned at the inside of described first slide block and described second slide block, and has guide pad respectively in the side of described first slide block and described second slide block.
Preferably, described first plunger is connected in the relative both sides of described first slide block, described guide pad is respectively arranged with in the both sides relative in addition of described first slide block, be connected to described second plunger in the relative both sides of described second slide block, be respectively arranged with described guide pad in the both sides relative in addition of described second slide block.
Preferably, described eccentric shaft also comprises transition piece and eccentric shaft head, and described eccentric shaft head is fixedly connected on the second eccentric wheel by transition piece, makes the center of the center of described eccentric shaft head and described eccentric shaft coaxial.
Preferably, described oil-storing barrel comprises and stirs food tray, and this stirs food tray has and stir food tray axle sleeve, and this stirs food tray axle sleeve and is enclosed within described eccentric shaft head, and is connected with described eccentric shaft header pin.
By technique scheme, plunger pump functional reliability provided by the invention is higher, and efficiency is better, can meet the fuel feeding demand of large discharge.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the partial sectional view of plunger pump provided by the invention.
Fig. 2 is the sectional view of the pump unit of plunger pump provided by the invention.
Fig. 3 is the plan view of plunger pump provided by the invention.
Fig. 4 is the partial perspective view of plunger pump provided by the invention.
Fig. 5 is the stereogram of the eccentric shaft of plunger pump provided by the invention.
Description of reference numerals
1 pump unit 2 oil-storing barrel
3 eccentric shaft 6 guide pads
7 stir food tray 8 fixed hole
The fuel-displaced part of 11 oil suction force feed part 12
31 first eccentric wheel 32 second eccentric wheels
33 transition piece 34 eccentric shaft heads
41 first plunger 42 second plungers
43 plunger head 51 first slide blocks
52 second slide block 53 draw-in grooves
71 stir food tray axle sleeve
111 runner 112 oil outlets
113 first oil pocket 114 second oil pockets
115 filler opening 121 oil discharge passages
141 first shutoff 142 second shutoff
411 annular grooves
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As depicted in figs. 1 and 2, according to the present invention, a kind of pump unit of plunger pump is provided, this plunger pump comprises eccentric shaft 3, pump unit 1 and the oil-storing barrel 2 be arranged on above pump unit 1, eccentric shaft 3 is connected to oil-storing barrel 2 through pump unit 1, pump unit 1 comprises oil suction force feed part 11 and fuel-displaced part 12, eccentric shaft 3 is for driving oil suction force feed part 11 from pump fat absorption in described oil-storing barrel 2 and being confessed by described fuel-displaced part 12 by grease, wherein, oil suction force feed part 11 comprises filler opening 115, oil outlet 112, runner 111, first oil pocket 113, second oil pocket 114, first plunger 41 and the second plunger 42, second plunger 42 telescopically is arranged on the side of the second oil pocket 114, first plunger 41 telescopically is arranged on the side of described first oil pocket 113 and excircle has annular groove 411, filler opening 115 is communicated with the first oil pocket 113, oil outlet 112 is communicated with institute annular groove 411, second oil pocket 114 is optionally communicated with the first oil pocket 113 or annular groove 411 by runner 111.
In addition, in order to realize the sealing of oil pocket, the opposite side of the first oil pocket 113 is provided with the first shutoff 141, the opposite side of the second oil pocket 114 is provided with the second shutoff 142.The kind of the first shutoff 141 and the second shutoff 142 preferably has the plug wire of sealing effect, to ensure the sealing of oil pocket.
Particularly, in oil-absorbing process, first plunger 41 moves to the direction away from the first shutoff 141 thus form vacuum in the first oil pocket 113, the first oil pocket 113 is entered from filler opening 115 to make grease, first plunger 41 continues mobile until when opening runner 111, second plunger 42 also moves to the direction away from the second shutoff 142, make also to form vacuum in the second oil pocket 114, because the second oil pocket 114 is communicated with by runner 111 with the first oil pocket 113, therefore the grease in the first oil pocket 113 is made to enter in the second oil pocket 114 further, to reach the effect of oil suction.In force feed process, first plunger 41 moves to the first shutoff 141 direction, until the annular groove 411 being formed in the first plunger 41 is communicated with runner 111, now the second plunger 42 moves to the second shutoff 142 direction, the grease in the second oil pocket 114 is made to flow to oil outlet 112 by runner 111 and annular groove 411, by being communicated with of oil outlet 112 and annular groove 411, realize the extrusion of grease.
In addition, the fuel-displaced part 12 of pump unit has oil discharge passage 121, and oil outlet 112 is communicated with described oil discharge passage 121, thus realizes confessing further of grease.
In technique scheme, by the cooperation of the first plunger 41 and the second plunger 42, realize the work of oil suction force feed, eccentric shaft 3 is for driving oil suction force feed part 11 from pump fat absorption in oil-storing barrel 2 and being confessed by fuel-displaced part 12 by grease.In the Fuel injection system of plunger pump provided by the invention, without any need for spring element, therefore plunger pump functional reliability provided by the invention is higher, and efficiency is better, can meet the fuel feeding demand of large discharge.
Conveniently dismantle, be easy to maintenance, oil suction force feed part 11 and fuel-displaced part 12 removably link together, such as, connected by fastening pieces such as bolts.
In addition, in order to better realize the to-and-fro motion of the first plunger 41 and the second plunger 42, as shown in Figure 3 and Figure 4, plunger pump provided by the invention also comprises the first slide block 51 and the second slide block 52, first plunger 41 is connected to the first slide block 51, second plunger 42 is connected to the second slide block 52, eccentric shaft 3 has the first eccentric wheel 31 and the second eccentric wheel 32, first eccentric wheel 31 that are mutually permanently connected and contacts with the second slide block 52 with the first slide block 51 respectively with the second eccentric wheel 32 and drive the first slide block 51 and the second slide block 52 reciprocating linear to move.
In the prior art, plunger, usually by spring reset, namely realizes reciprocating linear by the acting in conjunction of eccentric shaft and spring and moves.But spring is easy to lose efficacy or stuck in Long-Time Service process, thus causes plunger pump normally to work.
In the present invention, plunger is connected on slide block by suitable mode, thus drive at eccentric shaft in the process of slide block reciprocating linear movement, plunger just can be driven to move simultaneously and no longer need any spring, therefore thoroughly solve any problem brought because using spring.
First plunger 41 and the second plunger 42 can be connected respectively on the first slide block 51 and the second slide block 52 by any suitable mode, such as connected by fastening piece, bonding, clamping, riveted joint etc.As one preferred embodiment, as shown in Figure 3, the first slide block 51 and the second slide block 52 are all formed as a kind of quadra, this quadra have draw-in groove 53, and the plunger head 43 of the first plunger 41 and the second plunger 42 is bonded in draw-in groove 53 respectively.This structure is very simple and connection is reliable, and dismantles also very convenient between plunger and slide block.
In addition, as shown in Figure 3 and Figure 4, eccentric shaft 3 is positioned at the inside of the first slide block 51 and the second slide block 52, and has guide pad 6 respectively in the side of the first slide block 51 and the second slide block 52.By this structure, first eccentric wheel 31 of eccentric shaft 3 is in the first slide block 51 inner rotation, second eccentric wheel 32 rotates in the second slide block 52, thus drive the first slide block 51 and the second slide block 52 to move, because the side of slide block has guide pad 6 respectively, therefore can limit slide block to move back and forth in the straight direction, structure is very simple, and reliable operation.
Wherein, the inner side surface of guide pad 6 provided by the invention has one or more groove, and the outer side surface of the quadra of slide block 51,52 corresponding with it has the one or more projections used mutually, by such setting, slide block 51,52 can be erected by the guide pad 6 of both sides, thus make slide block 51,52 can to-and-fro motion under the guiding of guide pad 6, and do not contact other parts, reduce unnecessary wearing and tearing.In addition, for this type of Placement, the present invention does not limit, and also can adopt other Placement known to those skilled in the art, not repeat them here.In addition, guide pad 6 described herein is arrange in pairs, i.e. corresponding a pair guide pad 6 in both sides of corresponding a pair guide pad 6, second slide block 52 in the both sides of the first slide block 51.In addition, connect again, also can be wholely set after the guide pad 6 being positioned at side can be arranged separately, namely integration is produced, and the present invention does not limit.
As shown in Figure 3, as one preferred embodiment, the first plunger 41 is connected in the relative both sides of the first slide block 51, guide pad 6 is respectively arranged with in the both sides relative in addition of the first slide block 51, be connected to the second plunger 42 in the relative both sides of the second slide block 52, be respectively arranged with guide pad 6 in the both sides relative in addition of the second slide block 51.
Namely, with the direction shown in Fig. 3, first plunger 41 is connected in the left and right sides of the first slide block 51, second plunger 42 is connected in the left and right sides of the second slide block 52, then be respectively arranged with guide pad 6 in the both sides up and down of the first slide block 51 and the second slide block 52, upper and lower a pair guide pad for limit slide block only in the lateral direction reciprocating linear move.
In figs. 3 and 4, specifically, by the first eccentric wheel 31 of eccentric shaft 3 and the first slide block 51 and the second slide block 52 of the second eccentric wheel 32 and correspondence, drive the first corresponding plunger 41 and the second plunger 42 linear reciprocating motion in the oil suction force feed part 11 of pump unit 1, thus by filler opening 112 from the interior pump fat absorption of oil-storing barrel 2 (see Fig. 1) be arranged on pump unit 1, then outwards for giving required lubricating point.Oil suction force feed part 11 and guide pad 6 can arrange some fixed holes 8, thus can by fastening piece as bolt etc. is fixed in fuel-displaced part 12 easily.In other words, oil suction force feed part 11, guide pad 6 and slide block 51,52 is separately as standalone module, and be installed in fuel-displaced part 12, therefore plunger pump overall structure is simple, functional reliability is high and dismounting and maintenance are also very easy.
As shown in Figure 3 and Figure 4, the oil suction force feed part that one comprises plunger is respectively arranged with in the left and right sides of slide block, the grease that these two oil suction force feed part 11 pumps are inhaled is pumped by oil discharge passage 121 (see Fig. 1 and Fig. 2) respective in fuel-displaced part 12, because the oil suction force feed of single plunger 13 hockets, therefore by arranging two oil suction force feed parts 11, grease outside feed continuously can be ensured.
It should be noted that at this, the number of the present invention to plunger does not limit, and those skilled in the art within the scope of the invention, can require to change number of plungers according to the flow of plunger pump etc.Such as, in the mode of execution shown in Fig. 3, show and be connected to first plunger 41 in the left and right sides of the first slide block 51, second plunger 42 is connected to the left and right sides at the second slide block 52, but those skilled in the art are readily appreciated that, also can be connected to multiple first plunger 41 in the left and right sides of the first slide block 51, and be connected to multiple second plunger 42 in the left and right sides of the second slide block 52.
In addition, as shown in Figure 1, in order to ensure that the grease in oil-storing barrel 2 can successfully be inhaled in pump unit 1, being usually all provided with in oil-storing barrel 2 and stirring food tray 7 to stir grease, such as, the grease be attached on oil-storing barrel 2 inwall scraped off and remove the bubble etc. in degreasing.Wherein, this stirs food tray has and stirs food tray axle sleeve, and this stirs food tray axle sleeve and is enclosed within eccentric shaft head, and is connected with described eccentric shaft header pin.
In addition, as shown in Figure 5, what drive oil-storing barrel 2 to realize using eccentric shaft 3 stirs food tray work, eccentric shaft 3 provided by the invention also comprises transition piece 33 and eccentric shaft head 34, wherein, eccentric shaft head 34 is fixedly connected on the second eccentric wheel 32, to make the center of the center of eccentric shaft head 34 and eccentric shaft 3 coaxial by transition piece 33.Wherein, the second eccentric wheel 32 shown in Fig. 5 is its base portion, and the range demands according to the second plunger 42 installs the satisfactory outer ring of diameter, to realize the accurate movement of the second plunger 42.Compare integrated eccentric shaft, by such setting, facilitate processing and the assembling of eccentric shaft, mounting type the present invention of outer ring does not limit.In addition, in eccentric shaft head 34, be provided with speed reducer, can by the adjustment of rotational speed of eccentric shaft on the rotating speed stirred needed for food tray, the gear planetary speed reducer that speed reducer described herein is known to those skilled in the art, does not do too much description at this.
In sum, compared with prior art, working stability of the present invention is reliable, and efficiency is high, can meet the fuel feeding demand of large discharge.Specifically, the present invention at least has following features:
One, in oil suction force feed part 11, by the first plunger 41 and cooperatively interacting between the second plunger 42 and shutoff 17, ensure that oil suction force feed process does not relate to any spring members, make the functional reliability of plunger pump higher better with working efficiency, the fuel feeding demand of large discharge can be met.In addition, coordinated (at the end of force feed process) by the zero clearance between plunger end face with shutoff end face, its Work durability can be improved and improve force feed efficiency.
Two, eccentric shaft drives piston reciprocation rectilinear movement by slide block, plunger no longer needs spring to reset, thus all problems thoroughly solved owing to using spring reset to cause, the problem that such as spring failure, the plunger pump caused such as stuck cannot normally work, make the functional reliability of plunger pump higher, efficiency is better, can meet the fuel feeding demand of large discharge.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.The mode etc. of the shape of such as slide block, plunger and shutoff and various connection, fastening and sealing.
It should be noted that in addition; each concrete technical characteristics described in above-mentioned embodiment; in reconcilable situation; can be combined by any suitable mode; as applied the structure of listed by the present invention or several; in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode, and the various combinations not departing from the technology of the present invention design all belong to protection scope of the present invention.
Claims (10)
1. a plunger pump, this plunger pump comprises eccentric shaft (3), pump unit (1) and is arranged on the oil-storing barrel (2) of pump unit (1) top, described eccentric shaft (3) is connected to described oil-storing barrel (2) through described pump unit (1), described pump unit (1) comprises oil suction force feed part (11) and fuel-displaced part (12), described eccentric shaft (3) is for driving described oil suction force feed part (11) from described oil-storing barrel (2) interior pump fat absorption and being confessed by described fuel-displaced part (12) by grease, it is characterized in that
Described oil suction force feed part (11) comprises filler opening (115), oil outlet (112), runner (111), first oil pocket (113), second oil pocket (114), first plunger (41) and the second plunger (42), described second plunger (42) telescopically is arranged on the side of described second oil pocket (114), described first plunger (41) telescopically is arranged on the side of described first oil pocket (113), and the excircle of described first plunger (41) has annular groove (411), described inlet port (115) is communicated with described first oil pocket (113), oil outlet (112) is communicated with described annular groove (411), described second oil pocket (114) is optionally communicated with described first oil pocket (113) or described annular groove (411) by described runner (111).
2. plunger pump according to claim 1, it is characterized in that, the opposite side of described first oil pocket (113) is provided with the first shutoff (141), and the opposite side of described second oil pocket (114) is provided with the second shutoff (142).
3. plunger pump according to claim 1, is characterized in that, described fuel-displaced part (12) has oil discharge passage (121), and described oil outlet (112) is communicated with described oil discharge passage (121).
4. plunger pump according to claim 3, is characterized in that, described oil suction force feed part (11) and described fuel-displaced part (12) removably link together.
5. plunger pump according to claim 1, it is characterized in that, described plunger pump also comprises the first slide block (51) and the second slide block (52), described first plunger (41) and described second plunger (42) are connected respectively to described first slide block (51) and described second slide block (52), described eccentric shaft (3) has the first eccentric wheel (31) and the second eccentric wheel (32) that are mutually permanently connected, described first eccentric wheel (31) and described second eccentric wheel (32) contact with described second slide block (52) with described first slide block (51) respectively and drive described first slide block (51) and described second slide block (52) reciprocating linear to move.
6. plunger pump according to claim 5, it is characterized in that, described first slide block (51) and described second slide block (52) are formed as quadra respectively, this quadra has draw-in groove (53), and the plunger head (43) of described first plunger (41) and described second plunger (42) is bonded in described draw-in groove (53) respectively.
7. plunger pump according to claim 6, it is characterized in that, described eccentric shaft (3) is positioned at the inside of described first slide block (51) and described second slide block (52), and has guide pad (6) respectively in the side of described first slide block (51) and described second slide block (52).
8. plunger pump according to claim 7, it is characterized in that, described first plunger (41) is connected in the relative both sides of described first slide block (51), described guide pad (6) is respectively arranged with in the both sides relative in addition of described first slide block (51), be connected to described second plunger (42) in the relative both sides of described second slide block (52), be respectively arranged with described guide pad (6) in the both sides relative in addition of described second slide block (51).
9. plunger pump according to claim 1, it is characterized in that, described eccentric shaft also comprises transition piece (33) and eccentric shaft head (34), described eccentric shaft head (34) is fixedly connected on the second eccentric wheel (32) by transition piece (33), makes the center of the center of described eccentric shaft head (34) and described eccentric shaft (3) coaxial.
10. the plunger pump according to claim 1 or 9, it is characterized in that, described oil-storing barrel (2) comprises and stirs food tray (7), this stirs food tray (7) has and stirs food tray axle sleeve (71), this stirs food tray axle sleeve (71) and is enclosed within described eccentric shaft head (34), and is connected with described eccentric shaft head (34) pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110081018.5A CN102734111B (en) | 2011-03-31 | 2011-03-31 | Plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110081018.5A CN102734111B (en) | 2011-03-31 | 2011-03-31 | Plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734111A CN102734111A (en) | 2012-10-17 |
| CN102734111B true CN102734111B (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110081018.5A Active CN102734111B (en) | 2011-03-31 | 2011-03-31 | Plunger pump |
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| Country | Link |
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| CN (1) | CN102734111B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527439B (en) * | 2013-10-31 | 2016-09-07 | 陕西航天动力高科技股份有限公司 | A kind of filling apparatus |
| CN103527436B (en) * | 2013-10-31 | 2016-03-30 | 陕西航天动力高科技股份有限公司 | A kind of plunger type adds pump |
| CN110500271A (en) * | 2018-05-16 | 2019-11-26 | 北京中冶华润科技发展有限公司 | Pressure oil mechanism and oil pumping device |
| CN111043508A (en) * | 2020-01-13 | 2020-04-21 | 永康市富宇汽保工具有限公司 | Butter barrel |
| CN117703741B (en) * | 2024-01-29 | 2024-06-11 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Plunger pump for aircraft |
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| CN2913679Y (en) * | 2006-06-08 | 2007-06-20 | 张彬 | Strap pumping unit shifter |
| CN201103782Y (en) * | 2006-06-12 | 2008-08-20 | 程清池 | Automatic oil transfer device |
| CN201259082Y (en) * | 2008-08-19 | 2009-06-17 | 蔡永林 | Double-line electric lubrication apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2873272B2 (en) * | 1994-09-08 | 1999-03-24 | 広和株式会社 | Lubricating oil supply pump |
| JP5637547B2 (en) * | 2009-07-23 | 2014-12-10 | スイスイノヴ プロダクト サールＳｗｉｓｓｉｎｎｏｖ Ｐｒｏｄｕｃｔ Ｓａｒｌ | Fluid delivery system comprising fluid pump device and drive system |
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2011
- 2011-03-31 CN CN201110081018.5A patent/CN102734111B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2913679Y (en) * | 2006-06-08 | 2007-06-20 | 张彬 | Strap pumping unit shifter |
| CN201103782Y (en) * | 2006-06-12 | 2008-08-20 | 程清池 | Automatic oil transfer device |
| CN201259082Y (en) * | 2008-08-19 | 2009-06-17 | 蔡永林 | Double-line electric lubrication apparatus |
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| CN102734111A (en) | 2012-10-17 |
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