CN103277279A - Pump assisted type valve distributing plunger pump - Google Patents

Pump assisted type valve distributing plunger pump Download PDF

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Publication number
CN103277279A
CN103277279A CN2013102293676A CN201310229367A CN103277279A CN 103277279 A CN103277279 A CN 103277279A CN 2013102293676 A CN2013102293676 A CN 2013102293676A CN 201310229367 A CN201310229367 A CN 201310229367A CN 103277279 A CN103277279 A CN 103277279A
Authority
CN
China
Prior art keywords
pump
oil
cylinder barrel
plunger
cap
Prior art date
Application number
CN2013102293676A
Other languages
Chinese (zh)
Inventor
吕建强
何峰
吕宸
冯秀清
卜云峰
Original Assignee
淮阴工学院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 淮阴工学院 filed Critical 淮阴工学院
Priority to CN2013102293676A priority Critical patent/CN103277279A/en
Publication of CN103277279A publication Critical patent/CN103277279A/en

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Abstract

The invention discloses a pump assisted type valve distributing plunger pump. The pump assisted type valve distributing plunger pump is composed of an electric motor, an auxiliary gear pump and a main pump body and structurally comprises the electric motor, a coupler, a spindle, a left end cover, an annular ball bearing, a canted plate, a plunger, a spring seat, a backspring, a lining, an oil outlet, an oil discharging valve, an oil filling valve, an annular ball bearing, an oil pipe, an oil inlet pipe, the auxiliary gear pump, a right end cover, a bolt, a key, a cylinder barrel outer ring, a cylinder barrel, a bolt and a bearing. The pump assisted type valve distributing plunger pump adopts a through shaft structure, a shaft of the auxiliary gear pump is directly inserted into a main pump shaft, and the auxiliary gear pump supplies oil for the main pump, so that oil supply of the main pump does not rely on negative pressure oil suction but relies on oil supply of the auxiliary gear pump, the problem that a traditional plunger pump is insufficient in oil suction and accordingly air voids and noise are easily produced is solved, and meanwhile work pressure of the pump is improved. The pump assisted type valve distributing plunger pump adopts a valve distributing structure, and the problem that a traditional disc distributing plunger pump is severe in leakage, low in volume efficiency and short in service life due to abrasion of a distributing disc is solved.

Description

Pump is assisted formula valve flow plunger pump
Technical field
The pressure that the present invention relates to liquid is carried.
Background technique
Plunger pump is an important device of hydraulic system, it is a kind of typical volume-type hydraulic pump, by prime mover driven, the mechanical energy of input is converted into the pressure energy of liquid, being input in the system with the form of pressure, flow and going, is the power source of hydraulic system.Its pressure height, compact structure, Flow-rate adjustment is convenient, so in needing high pressure, big flow, powerful system and the occasion that need regulate of flow, as being widely used on double column planing machine, broaching machine, hydraulic press, engineering machinery, mine metallurgical machinery, the boats and ships.
At present, the plunger pump of extensive use has two kinds of radial plunger pump and axial piston pumps on the market.The plunger radial of radial plunger pump is arranged and is installed in the cylinder body, and cylinder body is driven by prime mover and rotates together with plunger, has certain throw of eccentric between cylinder body and the stator, finishes suction oil process when cylinder body drives the plunger rotation.Because the radial plunger pump radial dimension is big, structure is complicated, and suction capacity is poor, and oil distributing shaft is subjected to the radially effect of uneven hydraulic coupling, is easy to wearing and tearing, thereby defines the raising of its rotating speed and pressure.Axial piston pump be with a plurality of plunger axis on the circumference that is configured in a common cylinder body, and make the plunger center line a kind of pump parallel with cylinder center line.Its flow mode adopts the thrust plate flow more, rated pressure is 31.5Mpa, is up to 35Mpa, and complex structure, processing difficulties, thrust plate particularly, the processing technology complexity makes product seem that price is higher in generality is used, and the wearing and tearing of thrust plate, easily cause internal leakage, volumetric efficiency reduces, thereby causes working life low.
Summary of the invention
The objective of the invention is to: a kind of high-pressure high-flow oil hydraulic pump is provided, and rated pressure is 40Mpa, is up to 60Mpa, flow 18 (36) L/min.
Technical solution of the present invention is: the auxilliary formula valve flow plunger pump of pump of the present invention adopts the axis structure, the axle of auxiliary gear pump directly inserts in the main pump shaft, by auxiliary gear pump to the main pump fuel feeding, the fuel feeding of main pump is not to rely on the negative pressure oil suction like this, but rely on the equipment gear oil pump feed, avoid the insufficient air pocket that is easy to generate of traditional plunger pump oil suction, produced the problem of noise, improved the working pressure of pump simultaneously.
The dish flow mode that the present invention is traditional with plunger pump changes the valve flow into, owing to there is not thrust plate, the fretting wear problem between cylinder barrel and the thrust plate has not just existed, and has solved conventional disc flow plunger pump because the leakage that the thrust plate wearing and tearing cause is serious, volumetric efficiency reduces, the shortcoming that the life-span is low.
The auxilliary formula valve flow plunger pump unit mechanisms of pump comprises: motor, auxiliary gear pump, main pump body; The auxilliary formula valve flow plunger pump mechanism of described pump comprises: motor, coupling, main shaft, left end cap, radial ball bearing, swash plate, plunger, spring seat, retracting spring, lining, oil outlet, draining valve, oiling valve, bearing, oil pipe, oil inlet pipe, auxiliary gear pump, right end cap, bolt, key, cylinder barrel outer ring, cylinder barrel, bolt, bearing.
Motor is connected with main shaft by coupling, and the axle of auxiliary gear pump directly inserts in the main shaft, is connected with main shaft by key, realizes transmission of power.Left end cap is connected with cylinder barrel by bolt, the cylinder barrel outer ring is a tight fit in the cylinder barrel outside, end cap compresses the cylinder barrel outer ring by bolt and is connected with cylinder barrel, auxiliary gear pump is fixed on the right end cap by screw, auxiliary gear pump, right end cap, cylinder barrel outer ring, cylinder barrel, left end cap form an integral body, can be fixed on the relevant device and work.Main shaft is bearing on left end cap, the right end cap by radial ball bearing, realizes freely rotating.Swash plate is connected on the main shaft by key, is bearing on the left end cap by the end face bearing, and swash plate rotates with main shaft.
Oil pipe is connected with auxiliary gear pump oil outlet, end cap respectively, realizes that auxiliary gear pump pressure oil transmits to main pump body.
Evenly make a call to the horizontal, vertical hole of 6 covers in the cylinder barrel, 6 cover draining valves are adorned in 6 holes, upper end respectively, and 6 cover oiling valves are adorned in right-hand member 6 holes respectively, 6 linings are adorned in left end 6 holes respectively, the dress plunger shoots spring abutment, retracting spring in the lining on the plunger, and 6 plungers are withstood on the swash plate, 6 plungers were reciprocating respectively when swash plate rotated, plunger is to left movement, and draining valve cuts out, oiling valve is opened oil suction, and plunger is to left movement, draining valve is opened, oiling valve cuts out, and is fuel-displaced; 6 oil outlets communicate with groove on the cylinder barrel outer ring, and the oil of discharge converges in groove mutually, outwards carries by the oil outlet that is connected on the cylinder barrel outer ring, by working line pressure oil is delivered on the work mechanism, realizes work purpose of the present invention.
The present invention has the following advantages:
1, plunger pump is traditional dish flow mode changes the valve flow into, owing to there is not thrust plate, the fretting wear problem between cylinder barrel and the thrust plate has not just existed, and has solved conventional disc flow plunger pump because the leakage that the thrust plate wearing and tearing cause is serious, volumetric efficiency reduces, the shortcoming that the life-span is low.Simultaneously, adopt the valve flow to improve contamination resistance.
2, adopt a low pressure gear pump as auxiliary gear pump, to the main pump fuel feeding, the fuel feeding of main pump is not to rely on the negative pressure oil suction like this, but rely on the equipment gear oil pump feed, avoid the insufficient air pocket that is easy to generate of traditional plunger pump oil suction, produced the problem of noise, improved the working pressure of pump simultaneously.
3, oil distributing valve adopts monolithic construction, has improved the sealing of pump hyperbaric chamber, has simplified the general structure of pump, has reduced manufacture cost, has solved the strength problem when oil distributing valve bears high pressure.
4, traditional dish flow plunger pump can't be avoided the fretting wear between cylinder barrel and the thrust plate, thereby causes working life low, in let out seriously, volumetric efficiency is low.Thereby the present invention adopts flow-distributing valve to replace thrust plate to solve this problem, has improved the volumetric efficiency of pump, has prolonged the working life of pump.
5, cylinder barrel and the pump housing unite two into one, and adopt monolithic construction, have improved the high voltage bearing ability of pump, have also simplified the general structure of pump simultaneously, make more compact structure, and radial dimension is littler, save manufacture cost.
6, plunger withstands on the swash plate by retracting spring, realizes to-and-fro motion respectively, and simple in structure, required precision is low.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1, motor, 2, coupling, 3, main shaft, 4, left end cap, 5, radial ball bearing, 6, swash plate, 7, plunger, 8, spring seat, 9, retracting spring, 10, lining, 11, oil outlet, 12, draining valve, 13, oiling valve, 14, radial ball bearing, 15, oil pipe, 16, oil inlet pipe, 17, auxiliary gear pump, 18, right end cap, 19, bolt, 20, key, 21, cylinder barrel outer ring, 22, cylinder barrel, 23, bolt, 24, bearing.
Embodiment
The present invention reaches goal of the invention by the following technical solutions:
The axle of motor 1 links to each other with pump main shaft 3 by coupling 2, and axle insertion pump main shaft 3 other ends of auxiliary gear pump 16 are connected with main shaft 3 by key 20, realize transmission of power.The rotation of motor 1 passes to pump main shaft 3 by coupling 2, and pump main shaft 3 drives swash plate by key and auxiliary gear pump is rotated.
Be processed with at cylinder barrel 22 6 pack into, oil road and plunger trepanning, plunger bushing 10 is arranged in the plunger trepanning, plunger bushing 10 relies on its outside threads to be fastened in the plunger trepanning.One radial ball bearing 5 is installed in the left end cap 4, a thrust-bearing 24 is installed on the swash plate 6.Main shaft 3 relies on heart ball bearing bearing 5 and 14 and supports, and main shaft 3 drives swash plate 6 by key and rotates.Plunger 7 end faces are sphere, and its diameter is greater than plunger diameter, thereby the formation flange is equipped with spring seat 8 and retracting spring 9 behind flange.When motor 1 rotated, by the effect of coupling 2 and key, the rotating shaft of main shaft 3, swash plate 6, auxiliary gear pump 16 was rotated simultaneously.
Plunger 7 withdraws from cylinder barrel 22 gradually under the effect of the pressure oil of retracting spring 8 and auxiliary gear pump 16, it is big that volume in the cylinder barrel 22 becomes, form negative pressure, hydraulic oil is through the filler opening of auxiliary gear pump 17 to main pump right end cap 18, under the effect of hydraulic oil, corresponding oiling valve 13 valve ports are opened, and corresponding draining valve 12 valve ports are closed, hydraulic oil enters in the cylinder barrel through oiling valve 13, finishes oil-absorbing process; Plunger 7 simultaneously is pressed into cylinder barrel 22 under the effect of swash plate 6, the cylinder barrel internal volume diminishes, the hydraulic oil pressurized produces high pressure, push corresponding draining valve 12 spools open, draining valve 12 is opened, high pressure oil through draining valve 12 to the groove of cylinder barrel outer ring 21, the high pressure oil that converges is by oil outlet 11 outputs, finish and press oily all processes, at this moment the spool of oiling valve 13 is pressed on the valve seat under the effect of high pressure oil, and oiling valve cuts out.
The present invention is respectively equipped with independently oil distributing valve body, but directly is processed with oil inlet hole and oil outlet on cylinder barrel 22, in establish steel ball and spring, overcome problem and contamination resistance problem that the oil distributing valve valve body bears high pressure.
The dish flow mode that the present invention is traditional with plunger pump changes the valve flow into, owing to there is not thrust plate, the fretting wear problem between cylinder barrel and the thrust plate has not just existed, and has solved conventional disc flow plunger pump because the leakage that the thrust plate wearing and tearing cause is serious, volumetric efficiency reduces, the shortcoming that the life-span is low.
The auxilliary formula valve flow plunger pump of pump of the present invention adopts a low pressure gear pump as auxiliary gear pump, auxiliary gear pump and main pump are coaxial, its filler opening connected tank, oil outlet connects the filler opening of main pump, the fuel feeding of main pump is not to rely on the negative pressure oil suction like this, but relies on the equipment gear oil pump feed, has avoided the insufficient air pocket that is easy to generate of traditional plunger pump oil suction, produce the problem of noise, improved the working pressure of pump simultaneously.

Claims (1)

1. the auxilliary formula valve flow plunger pump of pump is made of motor, auxiliary gear pump, main pump body; Described main pump body mechanism comprises: main shaft, left end cap, radial ball bearing, swash plate, plunger, spring seat, retracting spring, lining, oil outlet, draining valve, oiling valve, bearing, oil pipe, oil inlet pipe, auxiliary gear pump, right end cap, bolt, key, cylinder barrel outer ring, cylinder barrel, bolt, bearing; Described motor is connected with main shaft by coupling, and the axle of auxiliary gear pump directly inserts in the main shaft, is connected with main shaft by key, realizes transmission of power; Described left end cap is connected with cylinder barrel by bolt, the cylinder barrel outer ring is a tight fit in the cylinder barrel outside, end cap compresses the cylinder barrel outer ring by bolt and is connected with cylinder barrel, and auxiliary gear pump is fixed on the right end cap by screw, and auxiliary gear pump, right end cap, cylinder barrel outer ring, cylinder barrel, left end cap form an integral body; Described oil pipe is connected with auxiliary gear pump oil outlet, end cap respectively; Described main shaft is bearing on left end cap, the right end cap by radial ball bearing; Swash plate is connected on the main shaft by key, is bearing on the left end cap by the end face bearing, and swash plate rotates with main shaft; Evenly make a call to the horizontal, vertical hole of 6 covers in the cylinder barrel, 6 cover draining valves are adorned in 6 holes, upper end respectively, and 6 cover oiling valves are adorned in right-hand member 6 holes respectively, 6 linings are adorned in left end 6 holes respectively, the dress plunger shoots spring abutment, retracting spring in the lining on the plunger, and 6 plungers are withstood on the swash plate, 6 plungers were reciprocating respectively when swash plate rotated, plunger is to left movement, and draining valve cuts out, oiling valve is opened oil suction, and plunger is to left movement, draining valve is opened, oiling valve cuts out, and is fuel-displaced; 6 oil outlets communicate with groove on the cylinder barrel outer ring, and the oil of discharge converges in groove mutually, outwards carries by the oil outlet that is connected on the cylinder barrel outer ring.
CN2013102293676A 2013-06-09 2013-06-09 Pump assisted type valve distributing plunger pump CN103277279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013102293676A CN103277279A (en) 2013-06-09 2013-06-09 Pump assisted type valve distributing plunger pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013102293676A CN103277279A (en) 2013-06-09 2013-06-09 Pump assisted type valve distributing plunger pump

Publications (1)

Publication Number Publication Date
CN103277279A true CN103277279A (en) 2013-09-04

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CN2013102293676A CN103277279A (en) 2013-06-09 2013-06-09 Pump assisted type valve distributing plunger pump

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711672A (en) * 2014-01-20 2014-04-09 邵阳维克液压股份有限公司 High-rotation-speed plunger pump
CN109812392A (en) * 2019-02-21 2019-05-28 燕山大学 A kind of superhigh pressure plunger pump

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061155A (en) * 1989-07-24 1991-10-29 Toyota Jidosha Kabushiki Kaisha Rotary swash plate type axial plunger pump
CN2182281Y (en) * 1993-03-13 1994-11-09 邵阳液压件厂 Axially plunger pump
US20030017057A1 (en) * 2001-07-18 2003-01-23 Shigeru Suzuki Pump unit and fluid supplying system
CN1587697A (en) * 2004-09-24 2005-03-02 黄耀初 Diaphragm type high pressure plunger pump
CN201096061Y (en) * 2007-11-01 2008-08-06 卢堃 50Mpa self complementing type electrohydraulic proportional control axial plunger variable pump
CN101956688A (en) * 2010-09-21 2011-01-26 华中科技大学 Self water-replenishing flat valve plunger type extra-high pressure water pump
JP2012112284A (en) * 2010-11-24 2012-06-14 Nachi Fujikoshi Corp Multiple piston pump
CN202833001U (en) * 2012-09-27 2013-03-27 北京工业大学 Swash plate type rotary valve flow distributing pure water plunger pump
CN203285640U (en) * 2013-06-09 2013-11-13 淮阴工学院 Auxiliary pump type plunger pump with flow distributed by valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061155A (en) * 1989-07-24 1991-10-29 Toyota Jidosha Kabushiki Kaisha Rotary swash plate type axial plunger pump
CN2182281Y (en) * 1993-03-13 1994-11-09 邵阳液压件厂 Axially plunger pump
US20030017057A1 (en) * 2001-07-18 2003-01-23 Shigeru Suzuki Pump unit and fluid supplying system
CN1587697A (en) * 2004-09-24 2005-03-02 黄耀初 Diaphragm type high pressure plunger pump
CN201096061Y (en) * 2007-11-01 2008-08-06 卢堃 50Mpa self complementing type electrohydraulic proportional control axial plunger variable pump
CN101956688A (en) * 2010-09-21 2011-01-26 华中科技大学 Self water-replenishing flat valve plunger type extra-high pressure water pump
JP2012112284A (en) * 2010-11-24 2012-06-14 Nachi Fujikoshi Corp Multiple piston pump
CN202833001U (en) * 2012-09-27 2013-03-27 北京工业大学 Swash plate type rotary valve flow distributing pure water plunger pump
CN203285640U (en) * 2013-06-09 2013-11-13 淮阴工学院 Auxiliary pump type plunger pump with flow distributed by valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711672A (en) * 2014-01-20 2014-04-09 邵阳维克液压股份有限公司 High-rotation-speed plunger pump
CN109812392A (en) * 2019-02-21 2019-05-28 燕山大学 A kind of superhigh pressure plunger pump
CN109812392B (en) * 2019-02-21 2020-03-31 燕山大学 Novel ultrahigh pressure plunger pump

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Application publication date: 20130904

C02 Deemed withdrawal of patent application after publication (patent law 2001)