CN110630462A - Full-water-lubricated flexible floating cup type axial plunger pump - Google Patents
Full-water-lubricated flexible floating cup type axial plunger pump Download PDFInfo
- Publication number
- CN110630462A CN110630462A CN201910938033.3A CN201910938033A CN110630462A CN 110630462 A CN110630462 A CN 110630462A CN 201910938033 A CN201910938033 A CN 201910938033A CN 110630462 A CN110630462 A CN 110630462A
- Authority
- CN
- China
- Prior art keywords
- floating cup
- main shaft
- floating
- flow distribution
- tray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/22—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
- F04B1/24—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons inclined to the main shaft axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a flexible floating cup type axial plunger pump with full water lubrication, which comprises a fixed body and a rotating body, wherein the fixed body consists of a front end cover, a flow distribution swash plate, a shell and a rear end cover in sequence, and the rotating body comprises a main shaft, a plunger, a floating cup, an elastic body, a floating cup tray and a sliding bearing. The rotating body is a working part and is driven by the main shaft to rotate, and liquid is sucked and discharged and flow distribution is carried out in the rotating process. The head of the plunger is connected with the floating cup, and the tail of the plunger is fixed on a turntable of the main shaft. The floating cup is connected with the floating cup tray through the elastic body to form sealing between the floating cup and the floating cup tray, and the elastic body limits the displacement of the floating cup. The floating cup tray is connected with the main shaft and rotates around a spherical joint of the main shaft, and the bottom of the floating cup tray is provided with a flow distribution groove and a flow distribution swash plate to form a flow distribution pair. The invention adopts a new form that the structure is in mirror symmetry and a plurality of independent floating cups move relative to the swash plate, thereby effectively improving the structure and the working performance of the traditional axial plunger pump.
Description
Technical Field
The invention relates to a flexible floating cup type axial plunger pump with full water lubrication, which breaks through the development limitation of the axial plunger pump by changing the integral structure of the traditional axial plunger pump and belongs to a power element in a hydraulic system.
Background
The pure water hydraulic technology is a novel green hydraulic technology, and filtered fresh water or seawater is used as a working medium, so that the energy conservation and environmental protection can be realized, and the dangers such as fire, explosion and the like can be avoided. In hydraulic transmission, water lubrication has the advantages of cleanness, low price, wide source, easiness in storage and the like compared with oil lubrication. With the development of novel materials such as engineering ceramics, high polymer materials and the like, the pure water hydraulic technology is rapidly developed and widely applied to various military and civil fields.
The hydraulic pump is a power element in a hydraulic system, and oil sucked from an oil tank is driven by a motor to form pressure oil and then the pressure oil is sent to an execution element, so that conversion from mechanical energy to hydraulic energy is realized. The hydraulic pump can be divided into a gear pump, a plunger pump, a vane pump and a screw pump according to the structure. The plunger pump can be divided into two representative structural forms, namely a radial plunger pump and an axial plunger pump.
The axial plunger pump utilizes a plunger or a piston parallel to a transmission shaft to carry out reciprocating motion in a plunger hole in a direction parallel to a central shaft of a cylinder body, so that volume change is generated to complete a work task. Because plunger and plunger hole are all cylindrical, easy processing and cooperation precision are high, so axial plunger pump's volumetric efficiency is high, uses also more extensively. The axial plunger pump may be divided into a swash plate type plunger pump and a swash plate type plunger pump.
The floating cup type axial plunger pump is a third novel axial plunger pump form after a swash plate type and a tilting shaft type, the integral structure of the floating cup type axial plunger pump is greatly changed compared with the traditional axial plunger pump, and the most remarkable characteristic is that the structure is in mirror symmetry, and a plurality of independent cup-shaped cylinder barrels move relative to a swash plate. As a novel axial plunger pump, the floating cup pump has the advantages that the traditional axial plunger pump does not have. However, since each cylinder body of the floating cup pump can float, the overturning moment of the floating cup at a high rotating speed makes the collision between the floating cup and the port plate more severe, which causes adverse effects on the performance of the pump, and the fit clearance existing between the floating cup and the tray can increase the leakage amount of the pump when water is used as a working medium.
Disclosure of Invention
In order to overcome the defects of the existing hydraulic pump product with full water lubrication, the invention provides a flexible floating cup type axial plunger pump with full water lubrication.
The invention comprises a main shaft, a mechanical seal, a front end cover, a flow distribution swash plate, a floating cup tray, an elastic body, a floating cup, a plunger piston, a shell, a rear end cover connecting bolt, a right swash plate fixing screw, a sliding bearing, a snap ring, a spring, a support ring, a pin, a left swash plate fixing screw, a sealing gland screw and a main shaft flat key, wherein the front end cover and the rear end cover are respectively arranged at two ends of the shell, the two flow distribution swash plates are respectively assembled at the inner sides of the front end cover and the rear end cover, the main shaft is arranged on the shell through the sliding bearing, the axial line of the main shaft is superposed with the central axis of the shell, a rotating body consisting of the main shaft, the floating cup tray, the elastic body, the floating cup and the plunger piston is designed into a mirror symmetry structure, the plunger pistons are designed into even number and are respectively fixed at two sides of a, the floating cup is connected with the floating cup tray through the elastic body to form sealing between the floating cup and the floating cup tray, the elastic body limits the displacement range of the floating cup on the floating cup tray, the two floating cup trays are respectively assembled on the inner sides of the two distributing swash plates, the floating cup tray is connected with the main shaft through the universal joint and rotates around the spherical joint in the middle of the main shaft, and the bottom of the floating cup tray is provided with a distributing groove which forms a distributing pair with the distributing swash plate.
The middle part of the main shaft is provided with two spherical joints, the middle of each spherical joint is provided with a circular turntable, and two sides of the turntable are respectively provided with a plurality of plungers which are rigidly connected with the turntable.
The plunger head is designed into a hollow spherical structure and is connected with a spherical surface of a floating cup, wherein the floating cup is made of ceramic materials.
The floating cups with even numbers are flexibly connected with the floating cup tray through the elastic bodies, the floating cups are not attached to the surface of the tray and float but swing in a certain range around the central axis of the elastic bodies, and meanwhile, the sealing between the floating cups and the floating cup tray is formed.
The bottom of the floating cup tray is provided with a flow distribution groove which forms a flow distribution pair with a flow distribution swash plate, wherein the flow distribution swash plate is made of ceramic materials.
The floating cup tray is connected with the main shaft through a universal joint, and the universal joint consists of a clamping ring, a spring, a support ring, a shaft pin and a spherical joint on the main shaft. The transmission shaft drives the floating cup tray to rotate along with the main shaft through the shaft pin, and meanwhile, the floating cup tray can be guaranteed to rotate axially around the circle center of the spherical joint.
Compared with the traditional axial plunger pump, the technical effects of the invention are as follows:
(1) and a full-water lubricating structure is adopted, so that the problems of environmental pollution, leakage danger and the like caused by oil lubrication are avoided, and the use cost is reduced.
(2) The lateral force (radial force) between the shell and the plunger is small, so that the frictional wear between the shell and the plunger is improved, and the noise is reduced.
(3) The flow pulsation of the floating cup pump is smaller than that of the traditional axial plunger pump, and the impact on a hydraulic system is correspondingly reduced when the floating cup pump works, so that the leakage is reduced, and the total efficiency is improved.
(4) Due to the increased number of plungers, the more compact structure of the floating cup pump is lighter in weight than a conventional axial plunger pump for the same volume, and the larger the difference in mass when the volume is larger.
(5) The plungers are symmetrically distributed on two sides of the rotor, the axial forces borne by the plungers are mutually offset, the axial force borne by the main shaft is correspondingly reduced, and the service life of the bearing is greatly prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the full water lubricated flexible floating cup type axial plunger pump of the present invention.
Fig. 2 is a front view of the main shaft of the full water lubricated flexible floating cup axial plunger pump of the present invention.
Fig. 3 is a side view of the main shaft of the full water lubricated flexible floating cup axial plunger pump of the present invention.
In the figure: 1. the main shaft, 2, mechanical seal, 3, front end cover, 4, flow distribution swash plate, 5, floating cup tray, 6, elastomer, 7, floating cup, 8, plunger, 9, shell, 10, rear end cover, 11, rear end cover connecting bolt, 12, right swash plate fixing screw, 13, sliding bearing, 14 snap ring, 15, spring, 16, support ring, 17, pin, 18 left swash plate fixing screw, 19, sealing gland screw and 20 main shaft flat key.
Detailed Description
As shown in fig. 1, a lubricated flexible floating cup formula axial plunger pump of full water, divide into two parts of rotator and fixed body, the rotator includes main shaft 1, floating cup tray 5, elastomer 6, floating cup 7 and plunger 8, the fixed body includes front end housing 3, the flow distribution sloping cam plate 4, casing 9 and rear end cap 10, the rotator is the work portion, rotate by motor drive main shaft 1, further drive and rotor rigid connection's plunger 8 rotates, main shaft 1 rotates along with the main shaft through pivot drive floating cup tray simultaneously, guarantee floating cup tray can rotate along the axial around the centre of a circle of spherical festival simultaneously.
The float cup 7 and the plunger 8 form a closed cavity, and the volume of the closed cavity is changed when the main shaft 1 rotates due to a certain inclination angle of the flow distribution swash plate 4, so that the process of sucking and discharging liquid is completed. When the volume of the closed cavity is increased, the hydraulic pump finishes the process of sucking liquid, and when the volume of the closed cavity is decreased, the hydraulic pump finishes the process of discharging liquid.
The head of the plunger 8 is of a hollow spherical structure to ensure that the sealing surface is always perpendicular to the axis. When the liquid is sucked and discharged, the floating cup 7 and the plunger 8 expand or contract together to ensure the sealing performance of the containing cavity.
The floating cup tray 5 and the floating cup 7 are flexibly connected through the elastic body 6 to form sealing between the floating cup and the floating cup tray, and meanwhile, a flow distribution groove at the bottom of the floating cup tray 5 and the flow distribution swash plate 4 form a flow distribution pair to complete flow distribution of liquid.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described examples, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a lubricated flexible floating cup formula axial plunger pump of full water which characterized in that: the device comprises a main shaft (1), a mechanical seal (2), a front end cover (3), a flow distribution swash plate (4), a floating cup tray (5), an elastic body (6), a floating cup (7), a plunger (8), a shell (9), a rear end cover (10), a rear end cover connecting bolt (11), a right swash plate fixing screw (12), a sliding bearing (13), a snap ring (14), a spring (15), a support ring (16), a pin (17), a left swash plate fixing screw (18), a seal gland screw (19) and a main shaft flat key (20); the two ends of the shell (9) are respectively provided with a front end cover (3) and a rear end cover (10), and the two flow distribution swash plates (4) are respectively assembled on the inner sides of the front end cover (3) and the rear end cover (10); the spindle (1) is installed on the shell (9) through a sliding bearing (13), the axis of the spindle (1) is overlapped with the central axis of the shell (9), the spindle (1), the floating cup tray (5), the elastic body (6), the floating cup (7) and the plungers (8) form a rotating body, the rotating body is of a mirror symmetry structure, an even number of the plungers (8) are uniformly distributed on two sides of a circular turntable in the middle of the spindle (1) in a staggered mode, the heads of the plungers (8) are connected with the floating cup (7) in a spherical surface mode, and the tail of the plungers (8) is rigidly connected with the circular turntable in the middle of the spindle (1); the floating cup (7) is flexibly connected with the floating cup tray (5) through the elastic body (6) to form connection and sealing between the floating cup (7) and the floating cup tray (5), and the elastic body (6) limits the displacement range of the floating cup (7) on the floating cup tray (5); the two floating cup trays (5) are respectively assembled on the inner sides of the two flow distribution swash plates (4), the floating cup trays (5) are connected with the main shaft (1) through universal joints and rotate around spherical joints in the middle of the main shaft (1), and flow distribution grooves are formed in the bottoms of the floating cup trays (5) and form flow distribution pairs with the flow distribution swash plates (4).
2. The flexible floating cup type axial plunger pump with full water lubrication according to claim 1, wherein: two spherical joints are arranged in the middle of the main shaft, a circular turntable is arranged in the middle of each spherical joint, and the floating cup is fixed on the circular turntable through threads.
3. The flexible floating cup type axial plunger pump with full water lubrication according to claim 1, wherein: the plunger head is designed into a hollow spherical structure to ensure that the sealing surface is vertical to the axis all the time, and when high-pressure liquid is filled, the floating cup and the plunger expand together to ensure sealing.
4. The flexible floating cup type axial plunger pump with full water lubrication according to claim 1, wherein: the floating cup is flexibly connected with the floating cup tray through the elastomer by adopting a vulcanization process, the elastomer realizes the sealing of the floating cup and the floating cup tray, the problems of collision and leakage between the floating cup and the floating cup tray are solved, and a certain swing space of the floating cup is ensured.
5. The flexible floating cup type axial plunger pump with full water lubrication according to claim 1, wherein: the floating cup tray is connected with the main shaft through a universal joint; the main shaft drives the floating cup tray to rotate along with the main shaft through the shaft pin, and meanwhile, the floating cup tray can be guaranteed to rotate axially around the circle center of the spherical joint.
6. The flexible floating cup type axial plunger pump with full water lubrication according to claim 1, wherein: the floating cup (7) and the plunger (8) form a closed cavity, and the volume of the closed cavity is changed when the main shaft (1) rotates due to a certain inclination angle of the flow distribution swash plate (4), so that the process of sucking and discharging liquid is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938033.3A CN110630462A (en) | 2019-09-30 | 2019-09-30 | Full-water-lubricated flexible floating cup type axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938033.3A CN110630462A (en) | 2019-09-30 | 2019-09-30 | Full-water-lubricated flexible floating cup type axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630462A true CN110630462A (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910938033.3A Pending CN110630462A (en) | 2019-09-30 | 2019-09-30 | Full-water-lubricated flexible floating cup type axial plunger pump |
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| CN (1) | CN110630462A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607577A (en) * | 2022-03-09 | 2022-06-10 | 西安航空学院 | Symmetrical arrangement synchronous quantitative axial plunger pump and motor |
| CN116213536A (en) * | 2023-05-08 | 2023-06-06 | 保定天威恒通电气有限公司 | Stamping forming device for resistor disc processing and use method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004055369A1 (en) * | 2002-12-18 | 2004-07-01 | Bosch Rexroth Ag | Axial piston engine |
| US20050017573A1 (en) * | 2002-01-12 | 2005-01-27 | Achten Peter A.J. | Hydraulic device |
| CN101155989A (en) * | 2005-11-11 | 2008-04-02 | 布鲁宁赫斯海诺马帝克有限公司 | Hydrostatic piston engine |
| EP1944510A1 (en) * | 2007-01-05 | 2008-07-16 | Robert Bosch GmbH | Piston type machine having a tiltable cylinder sleeve |
| US20090196768A1 (en) * | 2008-02-01 | 2009-08-06 | Caterpillar Inc. | Floating cup pump assembly |
| WO2019081558A1 (en) * | 2017-10-25 | 2019-05-02 | Innas Bv | A hydraulic device and a pivot joint |
-
2019
- 2019-09-30 CN CN201910938033.3A patent/CN110630462A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050017573A1 (en) * | 2002-01-12 | 2005-01-27 | Achten Peter A.J. | Hydraulic device |
| WO2004055369A1 (en) * | 2002-12-18 | 2004-07-01 | Bosch Rexroth Ag | Axial piston engine |
| CN101155989A (en) * | 2005-11-11 | 2008-04-02 | 布鲁宁赫斯海诺马帝克有限公司 | Hydrostatic piston engine |
| EP1944510A1 (en) * | 2007-01-05 | 2008-07-16 | Robert Bosch GmbH | Piston type machine having a tiltable cylinder sleeve |
| US20090196768A1 (en) * | 2008-02-01 | 2009-08-06 | Caterpillar Inc. | Floating cup pump assembly |
| WO2019081558A1 (en) * | 2017-10-25 | 2019-05-02 | Innas Bv | A hydraulic device and a pivot joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607577A (en) * | 2022-03-09 | 2022-06-10 | 西安航空学院 | Symmetrical arrangement synchronous quantitative axial plunger pump and motor |
| CN114607577B (en) * | 2022-03-09 | 2023-09-08 | 西安航空学院 | Symmetrically arranged synchronous quantitative axial plunger pump and motor |
| CN116213536A (en) * | 2023-05-08 | 2023-06-06 | 保定天威恒通电气有限公司 | Stamping forming device for resistor disc processing and use method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20191231 |