CN102734622B - Plunger pump - Google Patents
Plunger pump Download PDFInfo
- Publication number
- CN102734622B CN102734622B CN201110080749.8A CN201110080749A CN102734622B CN 102734622 B CN102734622 B CN 102734622B CN 201110080749 A CN201110080749 A CN 201110080749A CN 102734622 B CN102734622 B CN 102734622B
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- China
- Prior art keywords
- oil
- plunger
- eccentric shaft
- quadra
- discharge passage
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Classifications
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- 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
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
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- 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
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
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- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
Abstract
The invention discloses a kind of plunger pump, this plunger pump comprises eccentric shaft (3), pump unit (1) and the oil-storing barrel (2) be arranged on above pump unit (1), described eccentric shaft (3) is connected to described oil-storing barrel (2) through described pump unit (1), described pump unit (1) comprises the oil suction force feed part (11) and fuel-displaced part (12) that removably link together, 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.Structure of the present invention is simple, failure rate is low and detachable maintaining is convenient.
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, plunger pump mainly comprises the pump unit for oil suction force feed, the oil-storing barrel for oil storage and the eccentric shaft for driven pump unit, wherein the working principle of plunger pump is by eccentric shaft drive plunger, makes piston reciprocation straight line motion thus realizes the work of oil suction force feed.Structurally, usually the pump unit of integral type is adopted in current industry, the plunger reciprocates of spring and eccentric shaft are driven by the connection of pin or key and stir food tray etc. in oil-storing barrel, cause the complex structure of plunger pump, processing inconvenient, and easily to break down and detachable maintaining is also extremely inconvenient.
Summary of the invention
The object of this invention is to provide a kind of plunger pump, this plunger pump structure is simple, failure rate is low and easy to maintenance.
To achieve these goals, the invention provides a kind of plunger pump, the oil-storing barrel that this plunger pump comprises eccentric shaft, pump unit and is arranged on above pump unit, described eccentric shaft is connected to described oil-storing barrel through described pump unit, described pump unit comprises the oil suction force feed part and fuel-displaced part that removably link together, and 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.
Preferably, described oil suction force feed part has the inlet port, oil pocket and the oil outlet that are interconnected, and 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 comprises plunger and inner elements of check valve, described plunger axially movably can be arranged on the side of described oil pocket, and described inner elements of check valve axially movably can be arranged on the opposite side of described oil pocket, and described eccentric shaft drives described plunger to move axially.
Preferably, there is shutoff in the arranged outside of described inner elements of check valve, and be provided with Returnning spring between described inner elements of check valve and described shutoff.
Preferably, described oil suction force feed part has drain tap, and this drain tap between described inner elements of check valve and described shutoff, and is communicated with the oil discharge passage in described fuel-displaced part.
Preferably, described plunger pump also comprises slide block, and described plunger is connected to described slide block, and described eccentric shaft and described shoe contact also drive described slide block reciprocating linear to move.
Preferably, described slide block is formed as quadra, and this quadra has draw-in groove, and the engagement of described plunger is in described draw-in groove.
Preferably, described eccentric shaft is positioned at the inside of described quadra, and has guide pad in the side of described quadra.
Preferably, be connected to described plunger in the relative both sides of described quadra, be respectively arranged with described guide pad in the both sides relative in addition of described quadra.
Preferably, the side in the relative both sides of described quadra is connected with described plunger, is respectively arranged with described guide pad in the both sides relative in addition of described quadra.
Preferably, described oil-storing barrel comprise stir food tray and with the described axle sleeve stirring food tray and be connected, this axle sleeve has irregularly-shaped hole, is inserted in described irregularly-shaped hole to the upper end form fit of described eccentric shaft.
Preferably, described oil-storing barrel comprise stir food tray and with the described axle sleeve stirring food tray and be connected, this axle sleeve has irregularly-shaped hole, and the upper end of described eccentric shaft is connected by gear mechanism transmission with the lower end of special-shaped bar, is inserted in described irregularly-shaped hole to the upper end form fit of described special-shaped bar.
Preferably, described oil-storing barrel is removably mounted on described pump unit.
Preferably, have mounting hole in the bottom of described oil-storing barrel, described axle sleeve is arranged in described mounting hole by bearing.
Preferably, stir food tray described in be detachably connected on described axle sleeve by fastening piece.
Preferably, described plunger pump also comprises oil discharging device, this oil discharging device comprises the total oil discharge passage be formed on pump unit and the oil pipe be connected with this total oil discharge passage, described oil discharging device also comprises bolt, described bolt has the axial hole and radial direction through hole that are interconnected, and one end of described oil pipe has oil connection, and described bolt is twisted through described oil connection and is affixed in described total oil discharge passage, described axial hole is communicated with described oil discharge passage, and described radial direction through hole is communicated with described oil pipe.
Preferably, described oil connection is formed as the tubulose with endoporus, and sidewall has the side opening be communicated with described oil pipe, and described bolt passes described endoporus and described radial direction through hole is communicated with described side opening.
Preferably, described oil connection is removably connected or the structure that forms as one with described oil pipe.
Preferably, described bolt has orthogonal two radial direction through hole to be optionally communicated with described side opening.
Preferably, between described oil connection and the head of described bolt and/or between described oil connection and described pump unit, there is gasket seal.
By technique scheme, plunger pump structure provided by the invention is simple, failure rate is low and easy-maintaining.
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 structural representation of the pump unit of plunger pump provided by the invention;
Fig. 2 is the schematic top plan view of a kind of mode of execution of plunger pump provided by the invention;
Fig. 3 is the partial schematic sectional view of plunger pump in Fig. 2;
Fig. 4 is the schematic top plan view of the another kind of mode of execution of plunger pump provided by the invention;
Fig. 5 is the partial schematic sectional view of plunger pump in Fig. 4;
Fig. 6 is the partial schematic diagram of the oil discharging device of plunger pump provided by the invention;
Fig. 7 is the sectional view of bolt in Fig. 6;
Fig. 8 is the sectional view of oil connection in Fig. 6.
Description of reference numerals
1 pump unit 2 oil-storing barrel
3 eccentric shaft 4 bolts
5 total oil discharge passage 6 oil pipes
7 oil connection 8 gear mechanisms
9 fixed holes
The fuel-displaced part of 11 oil suction force feed part 12
13 plunger 14 inner elements of check valves
15 slide block 16 draw-in grooves
17 shutoff 18 guide pads
19 Returnning springs 21 stir food tray
22 axle sleeve 23 bearings
24 fastening piece 31 upper ends
41 axial hole 42 radial direction through hole
43 head 71 endoporus
The special-shaped bar of 72 side opening 81
Head 221 irregularly-shaped hole of 131 plungers
A inlet port b oil pocket
C oil outlet d drain tap
E oil discharge passage
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.
Plunger pump is as a kind of lubricant pump, mainly comprise pump unit and be arranged on the oil-storing barrel on pump unit, the eccentric shaft driven by motor etc. passes pump unit and extends to oil-storing barrel, eccentric shaft is used for the piston reciprocation straight line motion in driven pump unit, pump fat absorption from oil-storing barrel (lubricant oil or lubricating grease), and the grease that pump is inhaled is pumped and is fed to required lubricating point by oil pipe etc.
In the present invention, as shown in figures 1 and 3, the oil-storing barrel 2 that plunger pump mainly comprises eccentric shaft 3, pump unit 1 and is arranged on above pump unit 1, eccentric shaft 3 is connected to described oil-storing barrel 2 through pump unit 1, described pump unit 1 comprises the oil suction force feed part 11 and fuel-displaced part 12 that removably link together, and described eccentric shaft 3 is for driving described 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.Oil suction force feed part 11 can be releasably attached in fuel-displaced part 12 by fastening pieces such as bolts usually.
In the prior art, pump unit is all comprise a pump housing usually, is provided with plunger, one-way valve, inlet port, oil pocket, oil outlet, each oil duct etc. in the pump housing, and structure is very complicated and processing is inconvenient.In the present invention, by pump unit 1 being configured to oil suction force feed part 11 and fuel-displaced part 12 two parts, therefore simple, the easy to process and dismounting of structure is safeguarded also very convenient.
As shown in Figure 1, oil suction force feed part 11 can have the inlet port a, oil pocket b and the oil outlet c that are interconnected, fuel-displaced part 12 has oil discharge passage e, and oil outlet c is communicated with oil discharge passage e, thus the grease sucked from oil-storing barrel 2 can be sent by oil discharge passage e.
Usually, oil suction force feed part 11 comprises plunger 13 and inner elements of check valve 14, in order to meet the to-and-fro motion of plunger 13, plunger 13 axially movably can be arranged on the side of oil pocket b, inner elements of check valve 14 also axially movably can be arranged on the opposite side of oil pocket b simultaneously, plunger 13 and inner elements of check valve 14 cooperatively interact, and complete oil suction and force feed work.In addition, shutoff 17 is had in the arranged outside of inner elements of check valve 14, the kind of shutoff 17 preferably has the plug wire of sealing effect to ensure that grease does not leak, shutoff 17 also can be used as spring seat, to arrange Returnning spring 19 between inner elements of check valve 14 and shutoff 17, Returnning spring 19 is biased on inner elements of check valve 14, to maintain the to-and-fro motion of inner elements of check valve 14.
In real work, plunger 13 drives by eccentric shaft 3 and realizes to-and-fro motion, when plunger 13 is to left movement, inner elements of check valve 14 is also to left movement under the effect of Returnning spring 19, and close oil outlet c, plunger 13 continues to left movement simultaneously, thus negative pressure of vacuum is formed in oil pocket b, when plunger 13 move to left open inlet port a time, grease is inhaled in oil pocket b, perform oil-absorbing process; Then, plunger 13 drives by eccentric shaft 3 and starts to move right and close inlet port a, pressure is applied to the grease sucked in oil pocket b, the elastic force that this pressure forces inner elements of check valve 14 to overcome Returnning spring 19 moves right and opens oil outlet c, then, grease in oil pocket b flows into the oil discharge passage e of fuel-displaced part 12 by oil outlet c, to realize confessing of grease.
When plunger 13 moves right stroke terminal, the right-hand member of plunger 13 is by the left end of contact inner elements of check valve 14, now, in order to ensure the serviceability of fuel feeding efficiency, functional reliability and component, the end face of plunger 13 right-hand member and the end face of inner elements of check valve 14 left end are all roughly plane, thus the two can realize zero clearance contact, ensures the grease sucked in oil pocket b all to extrude.In addition, by appropriate design plunger 13, inner elements of check valve 14, Returnning spring 19 and shutoff 17, inlet port a is fully opened by effectively closing to make the oil outlet c when oil suction, on the contrary, when force feed then inlet port a by effectively closing, oil outlet c is fully opened, thus effectively can ensure functional reliability and the stability of oil suction force feed.
In order to regulate the pressure at inner elements of check valve 14 two ends, inner elements of check valve 14 can successfully be moved axially, oil suction force feed part 11 is also provided with drain tap d, and this drain tap d to be communicated with the oil discharge passage e in fuel-displaced part 12 with between shutoff 19 at described inner elements of check valve 14.
Pump unit for plunger pump provided by the invention, structure is simple, high efficiencyly can carry out oil suction force feed and fuel-displaced work, oil suction force feed part and fuel-displaced part mutual noninterference, failure rate is low, and easy accessibility.
In addition, in order to better realize the to-and-fro motion of plunger 13, as shown in Figure 2, plunger pump provided by the invention also comprises slide block 15, described plunger 13 is connected to described slide block 15, and described eccentric shaft 3 contacts with described slide block 15 and drives described slide block 15 reciprocating linear to move.
In the prior art, plunger 13 is usually all 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 13 is connected on slide block 15 by suitable mode, thus drive in the process of slide block 15 reciprocating linear movement at eccentric shaft 3, plunger 13 just can be driven to move simultaneously and no longer need any spring, therefore thoroughly solve any problem brought because using spring.
Plunger 13 can be connected on slide block 15 by any suitable mode, such as connected by fastening piece, bonding, clamping, riveted joint etc.As one preferred embodiment, as shown in Figure 2, slide block 15 is formed as a kind of quadra, this quadra has draw-in groove 16, and the head 131 of plunger 13 is bonded in described draw-in groove 16.This structure is very simple and connection is reliable, and dismantles also very convenient between plunger 13 and slide block 15.
In addition, as shown in Figure 2, described eccentric shaft 3 can be positioned at the inside of described quadra, and can also have guide pad 18 in the side of described quadra.By this structure, eccentric shaft 3, in quadra inner rotation, drives quadra motion, because the side of quadra has guide pad 18 respectively, therefore can limit quadra and move back and forth in the straight direction, and structure is very simple, and reliable operation.Wherein, the inner side surface of guide pad 18 provided by the invention has one or more groove, and the outer side surface of the quadra of slide block 15 corresponding with it has the one or more projections used mutually, by such setting, make slide block 15 can be directed to block 18 to erect, thus make slide block 15 can to-and-fro motion under the guiding of guide pad 18, 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.
As shown in Figure 2, as one preferred embodiment, be connected to described plunger 13 in the relative both sides of described quadra, be respectively arranged with described guide pad 18 in the both sides relative in addition of described quadra.Namely, with the direction shown in Fig. 2, be connected to a plunger 13 in the left and right sides of quadra, be then respectively arranged with guide pad 18 in the both sides up and down of quadra, upper and lower a pair guide pad 18 for limit quadra only in the lateral direction reciprocating linear move.
In fig. 2, specifically, plunger 13 linear reciprocating motion in the oil suction force feed part 11 of pump unit 1 is driven by eccentric shaft 3 and slide block 15, thus by inlet port a from the interior pump fat absorption of oil-storing barrel 2 (see Fig. 3) be arranged on pump unit 1, then outwards for giving required lubricating point.Oil suction force feed part 11 and guide pad 18 can arrange some fixed holes 9, 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 18 and slide block 15, separately as standalone module, are installed in fuel-displaced part 12, and therefore overall structure is simple, easy to process and dismounting and maintenance are also very easy.
As shown in Figure 2, the oil suction force feed part 11 that one comprises plunger 13 is respectively arranged with in the left and right sides of quadra, the grease that these two oil suction force feed part 11 pumps are inhaled pumps by oil discharge passage e (see Fig. 1) respective in fuel-displaced part 12, by total oil discharge passage 5 and the outside feed of oil pipe 7 (see Fig. 6) that is attached thereto after two oil discharge passage e corresponding with two oil suction force feed parts 11 can gather 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, can ensure that grease is by total oil discharge passage 5 outside feed continuously.
Fig. 4 is the schematic top plan view of the another kind of mode of execution of plunger pump provided by the invention; Fig. 5 is the partial schematic sectional view of plunger pump in Fig. 4.
As shown in Figure 4 and Figure 5, part different from the embodiment described above is mainly, the side only in the relative both sides of described quadra is connected with described plunger 13, instead of arranges plunger 13 respectively in both sides.Other structures in this mode of execution are substantially identical with above-mentioned mode of execution.
Specifically, the side in the relative both sides of described quadra is connected with described plunger 13 and is respectively arranged with described guide pad 18 in the both sides relative in addition of described quadra.Namely, with the direction shown in Fig. 4, only be connected with a plunger 13 in the left side of quadra, be then respectively arranged with guide pad 18 in the both sides up and down of quadra, upper and lower a pair guide pad 18 for limit quadra only in the lateral direction reciprocating linear move.In this embodiment, because the side only at quadra arranges plunger 13, therefore suitably can adjust the position relationship between each component, such as, quadra and eccentric shaft be offset towards side relative to the center of plunger pump, to make the overall structure of plunger pump compacter.
Mode of execution as shown in Figure 2, with two plungers 13, can be applicable to large-flow plunger pump, and mode of execution is as shown in Figure 4 only with a plunger 13, can be applicable to small flow plunger pump, and can reduce plunger pump size, reduce costs.
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 embodiment shown in figure 2, show and be connected to a plunger 13 in the left and right sides of quadra, but those skilled in the art are readily appreciated that, also can be connected to multiple plunger 13 in the left and right sides at quadra.In like manner, in the mode of execution shown in Fig. 4, those skilled in the art also can select to arrange a plunger 13 or multiple plunger 13 in the side of quadra as required.
As shown in Figure 3, in order to ensure that the grease in oil-storing barrel 2 can successfully be inhaled in pump unit 1, usually be all provided with in oil-storing barrel 2 and stir food tray 21 to stir grease, such as, the grease be attached on oil-storing barrel 2 inwall scraped off and remove the bubble etc. in degreasing.
In the present invention, also have in oil-storing barrel 2 and the axle sleeve 22 stirring food tray 21 and be connected, this axle sleeve 22 has irregularly-shaped hole 221, in order to convenient disassembly, stirs food tray 21 and preferably uses fastening piece 24 to be connected with axle sleeve 22.In addition, eccentric part (as eccentric wheel) the driven pump unit 1 of eccentric shaft 3 works, and be inserted in irregularly-shaped hole 221 to 31 form fit in upper end of eccentric shaft 3, namely the upper end 31 of eccentric shaft also adopts the structure identical with irregularly-shaped hole 221 shape.As a preferred embodiment, the upper end 31 of irregularly-shaped hole 221 and eccentric shaft is preferably square structure, also can adopt triangle or other polymorphic structures.By this structure, between eccentric shaft 3 and axle sleeve 22, dismounting is very convenient.
As shown in Figure 5, when the present invention adopts the mode of execution shown in Fig. 4, in order to save the normal work of inner space and guarantee plunger 13, eccentric shaft 3 can be biased.Therefore, the axle sleeve 22 at the center that is arranged on is driven to rotate in order to realize eccentric shaft 3, and then drive the object of stirring food tray 21 and rotating, the present invention can arrange gear mechanism 8 (such as comprising two pitch wheels) between eccentric shaft 3 and axle sleeve 22, stirs food tray to be passed to by the rotating force of eccentric shaft 3.That is, in two pitch wheels, one of them is connected with eccentric shaft 3, and another is connected with special-shaped bar 81, coordinates profiled holes 221 by special-shaped bar 81, and drives axle sleeve 22 to rotate.The structure that gear mechanism 8 is herein known to those skilled in the art, no longer too much repeats at this.
In real work, coordinated by abnormity, the rotating force of eccentric shaft 3 can pass to and stir food tray 21 to stir grease by axle sleeve 22.When if desired keeping in repair or safeguard, directly extracted from axle sleeve 22 by eccentric shaft 3, dismounting is very convenient.
In addition, conveniently dismounting, can be installed to oil-storing barrel 2 on pump unit 1 by fastening pieces such as bolts and (particularly, to be installed in the fuel-displaced part 12 of pump unit 1).
In addition, in order to axle sleeve 22 being arranged on the bottom of oil-storing barrel 2, oil-storing barrel 2 bottom has mounting hole, and mounting hole is built with bearing 23, and axle sleeve 22 inserts in the inner ring of bearing 23 ordinatedly.Eccentric shaft 3 and axle sleeve 22 can be plugged immediately, for convenience detach.
As Fig. 6, shown in Fig. 7 and Fig. 8, in order to smoothly grease outwards be sent, plunger pump provided by the invention also comprises oil discharging device, this oil discharging device comprises the total oil discharge passage 5 (being communicated with the oil discharge passage e shown in Fig. 1) be formed on pump unit 1 and the oil pipe 6 be connected with this total oil discharge passage 5, described oil discharging device also comprises bolt 4, described bolt 4 has the axial hole 41 and radial direction through hole 42 that are interconnected, one end of described oil pipe 6 has oil connection 7, described bolt 4 is twisted through described oil connection 7 and is affixed in described total oil discharge passage 5, described axial hole 41 is communicated with described total oil discharge passage 5, described radial direction through hole 42 is communicated with described oil pipe 6.
In technique scheme, bolt 4 has outside thread, and total oil discharge passage 5 has internal thread, passes through screw-thread fit, bolt 4 can be screwed in total oil discharge passage 5 through oil connection 7, therefore can oil pipe 6 and total oil discharge passage 5 be coupled together easily.
Bolt 4 has axial hole 41 and radial direction through hole 42.When bolt 4 is screwed in total oil discharge passage 5, total oil discharge passage 5 communicates with the axial hole 41 of bolt 4, thus grease wherein can be flow in oil pipe 6 by axial hole 41 and radial direction through hole 42.
Oil connection 7 is formed as the tubulose with endoporus 71 usually, and on tube wall, be formed with the side opening 72 be communicated with oil pipe 6.Bolt 4 is through the endoporus 71 of oil connection 7, and the radial direction through hole 42 of bolt 4 is communicated with the side opening 72 of oil connection 7, thus can ensure that radial direction through hole 42 is communicated with oil pipe 6.Oil connection 7 can be integrally formed with oil pipe 6 usually, but also the two firmly can be linked together by suitable mode, such as, removably link together.
In order to coordinate the side opening 72 of oil connection 7, described bolt 4 preferably has two radial direction through hole 42 of mutual crisscross.Therefore, when mounted, any one can selecting in four of two radial direction through hole 42 opening ends communicates with the side opening 72 on oil connection 7, thus installs very convenient, and allows oil pipe 6 to have multiple different setting angle, flexible for installation.
Preferably, can gasket seal be had between described oil connection 7 and the bolt head 43 stating bolt 4 and/or between described oil connection 7 and described pump unit 1, leak from this joint to prevent grease.
In sum, compared with prior art, the present invention takes full advantage of modular design philosophy, and make whole plunger pump structure simple, dismounting is very convenient with maintenance, and working stability is reliable.Specifically, compared with prior art, the present invention at least has following features:
One, pump unit 1 adopts split-type design, comprises the oil suction force feed part 11 and fuel-displaced part 12 that are detachably connected mutually, and therefore, various piece structure simply and easily process, and safeguard also very convenient by dismounting therebetween.
Two, in oil suction force feed part 11, by plunger 13, inner elements of check valve 14, cooperatively interacting between Returnning spring 19 and shutoff 17, ensure that functional reliability and the working efficiency of oil suction force feed process.In addition, coordinated (at the end of force feed process) by the zero clearance between plunger 13 end face with inner elements of check valve 14 end face, its Work durability can be improved and improve force feed efficiency.
Three, eccentric shaft 3 drives plunger 13 reciprocating linear to move by slide block 15, plunger 13 no longer needs spring to reset, thus thoroughly solve owing to using all problems that causes of spring reset, the problem that such as spring failure, the plunger pump caused such as stuck cannot normally work.
Four, adopt the Placement of plug type between the axle sleeve 22 on eccentric shaft 3 and oil-storing barrel 2, therefore dismounting is very convenient.In addition, axle sleeve 22 with stir between food tray 21 and can also be connected by the fastening piece such as bolt, screw 24, also can be connected by fastening pieces such as bolts between oil-storing barrel 3 and pump unit 1 (being specially the fuel-displaced part 12 of pump unit), therefore overall structure dismounting is safeguarded all very convenient.
Five, adopt between oil pipe 6 and total oil discharge passage 5 unique there is axial hole 41 and radial direction through hole 42 bolt 4 and oil connection 7 be connected, therefore structure is simple, easy to connect, and oil pipe 6 can also select different setting angles, therefore flexible for installation.
In addition, by modular design method of the present invention, can also some fixtures of plunger pump such as pressure gauge, filter, explosion-proof valve, pressure transducer etc. be integrated in a function module, not only overall structure is simple, beautiful shape to make plunger pump, and operation and maintenance is also very convenient.
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, inner elements of check valve 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 (13)
1. a plunger pump, this plunger pump comprises eccentric shaft (3), pump unit (1) and the oil-storing barrel (2) be arranged on above pump unit (1), described eccentric shaft (3) is connected to described oil-storing barrel (2) through described pump unit (1), it is characterized in that, described pump unit (1) comprises the oil suction force feed part (11) and fuel-displaced part (12) that removably link together, 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,
Described oil suction force feed part (11) has the inlet port (a), oil pocket (b) and the oil outlet (c) that are interconnected, described fuel-displaced part (12) has oil discharge passage (e), and described oil outlet (c) is communicated with described oil discharge passage (e);
Described oil suction force feed part (11) comprises plunger (13) and inner elements of check valve (14), described plunger (13) axially movably can be arranged on the side of described oil pocket (b), described inner elements of check valve (14) axially movably can be arranged on the opposite side of described oil pocket (b), and described eccentric shaft (3) drives described plunger (13) to move axially;
Described plunger pump also comprises slide block (15), described plunger (13) is connected to described slide block (15), and described eccentric shaft (3) contacts with described slide block (15) and drives described slide block (15) reciprocating linear to move;
Described slide block (15) is formed as quadra, this quadra has draw-in groove (16), and the head (131) of described plunger is bonded in described draw-in groove (16);
Described eccentric shaft (3) is positioned at the inside of described quadra, and has guide pad (18) in the side of described quadra;
Be connected to described plunger (13) in the relative both sides of described quadra, or the side in the relative both sides of described quadra is connected with described plunger (13);
Described guide pad (18) is respectively arranged with in the both sides relative in addition of described quadra;
The inner side surface of described guide pad (18) has one or more groove, and accordingly, the outer side surface of the quadra of described slide block (15) has the one or more projections used mutually.
2. plunger pump according to claim 1, it is characterized in that, there is shutoff (17) in the arranged outside of described inner elements of check valve (14), and be provided with Returnning spring (19) between described inner elements of check valve (14) and described shutoff (17).
3. plunger pump according to claim 2, it is characterized in that, described oil suction force feed part (11) has drain tap (d), this drain tap (d) is positioned between described inner elements of check valve (14) and described shutoff (17), and is communicated with the oil discharge passage (e) on described fuel-displaced part (12).
4. plunger pump according to claim 1, it is characterized in that, described oil-storing barrel (2) comprise stir food tray (21) and with the described axle sleeve (22) stirring food tray (21) and be connected, this axle sleeve (22) has irregularly-shaped hole (221), is inserted in described irregularly-shaped hole (221) to upper end (31) form fit of described eccentric shaft (3).
5. plunger pump according to claim 1, it is characterized in that, described oil-storing barrel (2) comprise stir food tray (21) and with the described axle sleeve (22) stirring food tray (21) and be connected, this axle sleeve (22) has irregularly-shaped hole (221), the upper end (31) of described eccentric shaft (3) and the lower end of special-shaped bar (81) are in transmission connection by gear mechanism (8), are inserted in described irregularly-shaped hole (221) to the upper end form fit of described special-shaped bar (81).
6. the plunger pump according to claim 4 or 5, is characterized in that, described oil-storing barrel (2) is removably mounted on described pump unit (1).
7. plunger pump according to claim 6, is characterized in that, has mounting hole in the bottom of described oil-storing barrel (2), and described axle sleeve (22) is arranged in described mounting hole by bearing (23).
8. plunger pump according to claim 7, is characterized in that, described in stir food tray and be detachably connected on described axle sleeve (22) by fastening piece (24).
9. plunger pump according to claim 1, it is characterized in that, described plunger pump also comprises oil discharging device, this oil discharging device comprises the total oil discharge passage (5) be formed on pump unit (1) and the oil pipe (6) be connected with this total oil discharge passage (5), described oil discharging device also comprises bolt (4), described bolt (4) has the axial hole (41) and radial direction through hole (42) that are interconnected, one end of described oil pipe (6) has oil connection (7), described bolt (4) is twisted through described oil connection (7) and is affixed in described total oil discharge passage (5), described total oil discharge passage (5) is communicated with described oil discharge passage (e), described axial hole (41) is communicated with described total oil discharge passage (5), described radial direction through hole (42) is communicated with described oil pipe (6).
10. plunger pump according to claim 9, it is characterized in that, described oil connection (7) is formed as the tubulose with endoporus (71), and sidewall has the side opening (72) be communicated with described oil pipe (6), described bolt (4) through described endoporus (71) and described radial direction through hole (42) be communicated with described side opening (72).
11. plunger pumps according to claim 10, is characterized in that, described oil connection (7) is removably connected or the structure that forms as one with described oil pipe (6).
12. plunger pumps according to claim 10, is characterized in that, described bolt (4) has orthogonal two radial direction through hole (42) to be optionally communicated with described side opening (72).
13. plunger pumps according to claim 9, it is characterized in that, between described oil connection (7) and the head (43) of described bolt (4) and/or between described oil connection (7) and described pump unit (1), there is gasket seal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080749.8A CN102734622B (en) | 2011-03-31 | 2011-03-31 | Plunger pump |
| PCT/CN2012/070961 WO2012129986A1 (en) | 2011-03-31 | 2012-02-08 | Piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080749.8A CN102734622B (en) | 2011-03-31 | 2011-03-31 | Plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734622A CN102734622A (en) | 2012-10-17 |
| CN102734622B true CN102734622B (en) | 2016-02-03 |
Family
ID=46929408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110080749.8A Active CN102734622B (en) | 2011-03-31 | 2011-03-31 | Plunger pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102734622B (en) |
| WO (1) | WO2012129986A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807127B (en) * | 2013-09-27 | 2017-04-12 | 潘建民 | Centrally-mounted pushing mechanism of eccentric bearing of through hole of plunger of plunger pump |
| CN110043440A (en) * | 2019-05-29 | 2019-07-23 | 王湫锂 | Balanced type booster pump driving mechanism |
| CN115748655B (en) * | 2022-11-30 | 2023-06-20 | 北京振冲工程机械有限公司 | Hydraulic vibroflotation device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102734622A (en) | 2012-10-17 |
| WO2012129986A1 (en) | 2012-10-04 |
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