CN105020131A - Axial plunger pump with impeller structure cylinder - Google Patents
Axial plunger pump with impeller structure cylinder Download PDFInfo
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- CN105020131A CN105020131A CN201410169122.3A CN201410169122A CN105020131A CN 105020131 A CN105020131 A CN 105020131A CN 201410169122 A CN201410169122 A CN 201410169122A CN 105020131 A CN105020131 A CN 105020131A
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- cylinder body
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- blade wheel
- axial piston
- piston pump
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Abstract
The invention relates to an axial plunger pump with an impeller structure cylinder. The axial plunger pump mainly comprises a shell, the cylinder, a plunger, a valve plate and a rear cover. The valve plate is arranged on the rear cover, and spherical flow distribution is adopted between the cylinder and the valve plate. An oil inlet and an oil outlet are formed in the rear cover, and the oil inlet is communicated with a cavity of the shell. The cylinder is the impeller structure cylinder, the impeller structure cylinder is provided with an impeller structure, and the impeller structure is integrated with the cylinder and located on the surface of the cylinder. By means of the impeller structure cylinder, the self-absorption performance of the whole axial plunger pump can be improved, vibration can be reduced, and noise can be lowered; and the service life of the axial plunger pump can be prolonged, and the axial plunger pump is more practical.
Description
Technical field
The present invention relates to a kind of axial piston pump, particularly relate to a kind of axial piston pump with blade wheel structure cylinder body.
Background technique
Current, axial piston pump, because its volume is little, frictional loss is little, and suction capacity is strong, and starting efficiency advantages of higher, is widely used in hydraulic system.
Consult shown in Fig. 1, for the structural representation of existing angle type axial piston pump, this angle type axial piston pump comprises main shaft 1, bearing 2, housing 3, bearing unit 4, central shaft 5, rod-plunger pair 6, cylinder body 7, big swing angle stop screw 8, thrust plate 9, bonnet 10 and little pivot angle stop screw 11.
Wherein, this main shaft 1 is with the vibrational power flow of radius from front to back in multistage stepped increase, and is arranged on the bearing unit 4 in housing 3, has an inclination angle between this main shaft 1 and central shaft 5 simultaneously; The bulb of plunger is pressed in the ball-and-socket of main shaft 1 by return plate, and central shaft 5 is housed in the center hole of cylinder body 7, and prefastening force spring is equipped with in the bottom of central shaft 5; Above-mentioned thrust plate 9 is arranged on bonnet 10, sphere flow is adopted between cylinder body 7 and thrust plate 9, and be pressed on thrust plate 9 by the prefastening force spring bottom central shaft 5 by cylinder body 7, thus cylinder body 7 has good self-alignment when starting to rotate, and has higher volumetric efficiency.And big swing angle stop screw 8 and little pivot angle stop screw 11 play spacing fixing effect.In addition, bonnet 10 is provided with filler opening and oil outlet, and wherein filler opening communicates with housing chamber.
In addition, because the shaft axis of cylinder body 7 and the shaft axis of main shaft 1 have certain angle, promote cylinder body 7 to rotate when main shaft 1 rotates, plunger moves on to upper dead center by lower dead centre, plunger in cylinder body 7 just produces a stroke corresponding with pivot angle, and at this moment hydraulic oil enters in cylinder body 7 plunger hole from filler opening through oil distributing hole.When cylinder body 7 continues to rotate, plunger moves on to lower dead centre again by upper dead center, and the oil be inhaled in cylinder body 7 plunger hole is discharged from high-pressure oil outlet through another oil distributing hole, completes a working procedure.This is the hydraulic pump works principle of conventional structure cylinder body.
Shown in Figure 2, be the structural representation of existing shaft type axial piston pump.Existing shaft type axial piston pump comprises transmission shaft 100, housing 200, cylinder body 300, plunger 400, thrust plate 500, bonnet 600 etc., and wherein cylinder body 300 is conventional structure cylinder bodies, working principle and above-mentioned working principle similar.
But the oil hydraulic pump with conventional structure cylinder body easily inhales sky, and self-priming performance is poor, and noise is very large, namely has the axial piston pump Shortcomings of conventional structure cylinder body.
Because the above-mentioned existing axial piston pump Problems existing with conventional structure cylinder body, the present inventor is based on being engaged in the practical experience and professional knowledge that this type of product specification manufacture enriches for many years, and coordinate the utilization of scientific principle, actively in addition research and innovation, to founding a kind of cylinder body of new structure, existing Problems existing can be solved, make it have more practicability.Through constantly research, design, and through repeatedly studying sample and after improving, finally creating the present invention had practical value.
Summary of the invention
The object of the invention is providing a kind of axial piston pump with blade wheel structure cylinder body, existing oil hydraulic pump can be overcome and easily inhale the deficiencies such as sky, self-priming performance is poor, noise is large, improve the self-priming performance of whole axial piston pump, reduce vibration, reduce noise, and extend the working life of axial piston pump, make it more practical.
The object of the invention is to adopt following technological scheme to realize.The invention provides a kind of axial piston pump with blade wheel structure cylinder body, mainly comprise housing, cylinder body, plunger, thrust plate and bonnet, above-mentioned thrust plate is arranged on bonnet, sphere flow is adopted between cylinder body and thrust plate, bonnet is provided with filler opening and oil outlet, and this filler opening communicates with housing chamber; Wherein this cylinder body is blade wheel structure cylinder body, and blade wheel structure cylinder body is the cylinder body with blade wheel structure, and blade wheel structure and cylinder body are one, are positioned at the surface of cylinder body.
Object of the present invention can also be further achieved by the following technical measures.
The aforesaid axial piston pump with blade wheel structure cylinder body, wherein this blade wheel structure cylinder body comprises more blades.
The aforesaid axial piston pump with blade wheel structure cylinder body, wherein this blade wheel structure cylinder body comprises 6 blades, and the minimum thickness of blade is 5 ~ 6mm.
The aforesaid axial piston pump with blade wheel structure cylinder body, wherein the true dip direction of this blade and the sense of rotation of cylinder body consistent.
By technique scheme, the axial piston pump with blade wheel structure cylinder body of the present invention at least has following advantages and beneficial effect:
1, the axial piston pump with blade wheel structure cylinder body of the present invention, can improve the self-priming performance of whole axial piston pump, reduces vibration, reduces noise.
2, blade wheel structure cylinder body of the present invention, can extend the working life of axial piston pump, makes it more practical.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1: be the structural representation of existing angle type axial piston pump.
Shown in Fig. 2, it is the structural representation of existing shaft type axial piston pump.
Fig. 3: be the structural representation with the axial piston pump of blade wheel structure cylinder body of the present invention.
Fig. 4 A and Fig. 4 B: be the structural representation of blade wheel structure cylinder body of the present invention.
[primary component symbol description]
1: main shaft 2: bearing
3: housing 4: bearing unit
5: central shaft 6: rod-plunger is secondary
7: cylinder body 7': blade wheel structure cylinder body
8: big swing angle stop screw 9: thrust plate
10: bonnet 11: little pivot angle stop screw
100: transmission shaft 200: housing
300: cylinder body 400: plunger
500: thrust plate 600: bonnet
I: blade wheel structure
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to a kind of its embodiment of axial piston pump, structure, feature and the effect thereof with blade wheel structure cylinder body proposed according to the present invention, be described in detail as follows.
Consulting shown in Fig. 2, is the structural representation with the axial piston pump of blade wheel structure cylinder body of the present invention.This axial piston pump with blade wheel structure cylinder body comprises main shaft 1, bearing 2, housing 3, bearing unit 4, central shaft 5, rod-plunger pair 6, blade wheel structure cylinder body 7', big swing angle stop screw 8, thrust plate 9, bonnet 10 and little pivot angle stop screw 11.
Wherein, this main shaft 1 is with the vibrational power flow of radius from front to back in multistage stepped increase, and is arranged on the bearing unit 4 in housing 3, has an inclination angle between this main shaft 1 and central shaft 5 simultaneously; The bulb of plunger is pressed in the ball-and-socket of main shaft 1 by return plate, and central shaft 5 is housed in the center hole of blade wheel structure cylinder body 7', and prefastening force spring is equipped with in the bottom of central shaft 5; Above-mentioned thrust plate 9 is arranged on bonnet 10, sphere flow is adopted between blade wheel structure cylinder body 7' and thrust plate 9, and by the prefastening force spring bottom central shaft 5, blade wheel structure cylinder body 7' is pressed on thrust plate 9, thus blade wheel structure cylinder body 7' has good self-alignment when starting to rotate, and has higher volumetric efficiency.And big swing angle stop screw 8 and little pivot angle stop screw 11 play spacing fixing effect.In addition, bonnet 10 is provided with filler opening and oil outlet, and wherein filler opening communicates with housing chamber.
Concrete, above-mentioned blade wheel structure cylinder body 7' is the cylinder body with blade wheel structure.This blade wheel structure cylinder 7' body increases blade wheel structure I on the basis of conventional structure cylinder body, and blade wheel structure I and cylinder body are one, namely blade wheel structure I and cylinder body be overall processing out.Detailed, above-mentioned blade wheel structure I is positioned at the surface of cylinder body, and this blade wheel structure I comprises more blades.For the sheet number of blade, to consider according to plunger pump performance, generally select 6.When increasing blade sheet number, although can improve the situation of fluid flowing, too much blade can increase interlobate frictional loss on the contrary, reduces runner area of passage, so not only will lower efficiency, the cavitation performance of impeller also can be made to worsen.And blade less time, the flowing of fluid can not get good improvement.In addition, the minimum thickness of blade is 5 ~ 6mm, and blade is too thick, can lower efficiency, but when the power of plunger pump is larger, suitably will increase the thickness of blade, to extend the life-span of blade wheel structure I.
In addition, according to the difference of main shaft sense of rotation, the i.e. difference of blade wheel structure cylinder body 7' sense of rotation, blade wheel structure cylinder body 7' can be divided into left-handed cylinder body and dextrorotation cylinder body, what such as turn clockwise is dextrorotation cylinder body, and what be rotated counterclockwise is left-handed cylinder body, specifically see shown in Fig. 4 A and Fig. 4 B, wherein Fig. 4 A is dextrorotation cylinder body, and Fig. 4 B is left-handed cylinder body.It should be noted that when to set up blade wheel structure on cylinder body, notice that the true dip direction of blade is consistent with the sense of rotation of cylinder body, to ensure the proper flow of fluid.
In simple terms, in the present invention, this axial piston pump with blade wheel structure cylinder body is compared with the axial piston pump of routine, unique difference is, axial piston pump of the present invention comprises new structure cylinder body, i.e. blade wheel structure cylinder body, and the axial piston pump of routine comprises conventional structure cylinder body, by optimizing housing structure, the self-priming performance of axial piston pump can be improved.
In the present invention, when rotated, the effect of blade wheel structure is that the mechanical energy of prime mover is directly passed to fluid to this blade wheel structure cylinder body 7', to increase static energy and the kinetic energy of fluid.Detailed, in the course of the work, a part of fluid is deposited in oil distribution casing oil suction window under the effect of inertial force, and cylinder body often circles, and each plunger reciprocates once, completes and once inhales force feed action.Due to the rotation of cylinder body, sub-fraction fluid is inhaled in pump case in addition, and above-mentioned blade wheel structure cylinder body drives high speed rotating by central shaft, and interlobate fluid also must along with rotation.Under the influence of centrifugal force, fluid is thrown to outer rim from blade wheel structure center and is obtained energy, so that leaving blade wheel structure outer rim enters pump case at a high speed.In pump case, fluid slows down due to the expansion gradually of runner, is static energy again by part kinetic energy, finally flows into oil outlet with higher pressure, delivers to and need place.Wherein, when fluid flows to outer rim by blade wheel structure center, define certain vacuum at blade wheel structure center, the pressure due to storage tank ullage is greater than the pressure at pump filler opening place, and fluid is just pressed in blade wheel structure continuously.So as long as blade wheel structure constantly rotates, fluid just can constantly be inhaled into and discharge, thus improve oil hydraulic pump from oil absorption.
In addition, the above-mentioned introduction to blade wheel structure cylinder body 7' for be angle type axial piston pump, but the present invention is not limited to this, when axial piston pump is shaft type axial piston pump, can be optimized the cylinder body of shaft type axial piston pump equally, become blade wheel structure cylinder body, thus improve the self-priming performance of axial piston pump.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. one kind has the axial piston pump of blade wheel structure cylinder body, mainly comprise housing, cylinder body, plunger, thrust plate and bonnet, above-mentioned thrust plate is arranged on bonnet, adopts sphere flow between cylinder body and thrust plate, bonnet is provided with filler opening and oil outlet, and this filler opening communicates with housing chamber;
It is characterized in that, wherein this cylinder body is blade wheel structure cylinder body, and blade wheel structure cylinder body is the cylinder body with blade wheel structure, and blade wheel structure and cylinder body are one, are positioned at the surface of cylinder body.
2. the axial piston pump with blade wheel structure cylinder body according to claim 1, is characterized in that wherein this blade wheel structure cylinder body comprises more blades.
3. the axial piston pump with blade wheel structure cylinder body according to claim 2, it is characterized in that wherein this blade wheel structure cylinder body comprises 6 blades, and the minimum thickness of blade is 5 ~ 6mm.
4. the axial piston pump with blade wheel structure cylinder body according to claim 2, is characterized in that wherein the true dip direction of this blade and the sense of rotation of cylinder body are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410169122.3A CN105020131B (en) | 2014-04-24 | 2014-04-24 | Axial plunger pump with blade wheel structure cylinder body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410169122.3A CN105020131B (en) | 2014-04-24 | 2014-04-24 | Axial plunger pump with blade wheel structure cylinder body |
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| Publication Number | Publication Date |
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| CN105020131A true CN105020131A (en) | 2015-11-04 |
| CN105020131B CN105020131B (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410169122.3A Active CN105020131B (en) | 2014-04-24 | 2014-04-24 | Axial plunger pump with blade wheel structure cylinder body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586387A (en) * | 2021-07-16 | 2021-11-02 | 江苏欧盛液压科技有限公司 | Method and device for improving self-absorption capacity of axial plunger pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU981671A1 (en) * | 1981-04-01 | 1982-12-15 | Предприятие П/Я В-2190 | Axial piston hydraulic machine |
| JPS5818575A (en) * | 1981-07-24 | 1983-02-03 | Mitsubishi Heavy Ind Ltd | Axial piston type hydraulic pump |
| DE29503060U1 (en) * | 1995-02-23 | 1995-04-06 | Brueninghaus Hydromatik GmbH, 89275 Elchingen | Axial piston machine |
| CN2828357Y (en) * | 2005-11-14 | 2006-10-18 | 北京华德液压工业集团有限责任公司技术中心 | Oblique-axis axial piston variable motro |
| CN201007261Y (en) * | 2007-02-01 | 2008-01-16 | 北京华德液压工业集团有限责任公司技术中心 | Axial Variable displacement plunger pump |
| CN203822617U (en) * | 2014-04-24 | 2014-09-10 | 北京华德液压工业集团有限责任公司 | Axial plunger pump with impeller-structure cylinder body |
-
2014
- 2014-04-24 CN CN201410169122.3A patent/CN105020131B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU981671A1 (en) * | 1981-04-01 | 1982-12-15 | Предприятие П/Я В-2190 | Axial piston hydraulic machine |
| JPS5818575A (en) * | 1981-07-24 | 1983-02-03 | Mitsubishi Heavy Ind Ltd | Axial piston type hydraulic pump |
| DE29503060U1 (en) * | 1995-02-23 | 1995-04-06 | Brueninghaus Hydromatik GmbH, 89275 Elchingen | Axial piston machine |
| CN2828357Y (en) * | 2005-11-14 | 2006-10-18 | 北京华德液压工业集团有限责任公司技术中心 | Oblique-axis axial piston variable motro |
| CN201007261Y (en) * | 2007-02-01 | 2008-01-16 | 北京华德液压工业集团有限责任公司技术中心 | Axial Variable displacement plunger pump |
| CN203822617U (en) * | 2014-04-24 | 2014-09-10 | 北京华德液压工业集团有限责任公司 | Axial plunger pump with impeller-structure cylinder body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586387A (en) * | 2021-07-16 | 2021-11-02 | 江苏欧盛液压科技有限公司 | Method and device for improving self-absorption capacity of axial plunger pump |
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| CN105020131B (en) | 2018-08-28 |
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