CN107939628B - Multi-head radial plunger pump and application method thereof - Google Patents
Multi-head radial plunger pump and application method thereof Download PDFInfo
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- CN107939628B CN107939628B CN201711429709.3A CN201711429709A CN107939628B CN 107939628 B CN107939628 B CN 107939628B CN 201711429709 A CN201711429709 A CN 201711429709A CN 107939628 B CN107939628 B CN 107939628B
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- plunger
- oil
- oil outlet
- steel ball
- cavity
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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
- 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
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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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides a multi-head radial plunger pump and a use method thereof, the multi-head radial plunger pump comprises an oil pump body, plunger mechanisms and eccentric wheels, wherein the plunger mechanisms are installed in the oil pump body at intervals along the circumferential direction of the oil pump body, the oil pump body is provided with a driving shaft, the eccentric wheels are provided with eccentric holes, the driving shaft is connected with the eccentric holes, so that the eccentric wheels are rotatably installed between the plunger mechanisms, and when the eccentric wheels rotate, the plunger mechanisms sequentially reciprocate along the radial direction, so that the plunger mechanisms sequentially discharge oil, the oil discharge efficiency of the plunger pump is improved, the structure is compact, the reliability is improved, and the service life is prolonged.
Description
Technical Field
The invention relates to the field of plunger pumps, in particular to a multi-head radial plunger pump and a use method thereof.
Background
The plunger pump is a hydraulic pump which realizes oil suction and oil discharge by the change of sealing volume caused by the reciprocating motion of a plunger in a cylinder body. The traditional plunger pump oil outlet one-way valve adopts an axial helical compression spring to squeeze the steel ball, and the axial dimension of the spring is generally longer, so that fatigue fracture is easily caused in the using process. Along with the reciprocating motion of the plunger, the steel ball is also displaced by a little distance along with the oil pressure to form a small gap for oil discharge, the spiral compression spring is compressed, along with the reverse motion of the plunger, the deformation acting force of the spring pushes the steel ball to move, the reciprocating motion easily causes deformation failure of the axial spiral compression spring, the compression environment in the cavity is difficult to be effectively maintained, the long-term use of the plunger pump is not facilitated, and the maintenance and the replacement are required to be carried out irregularly.
Meanwhile, when the plunger moves to the furthest point of the rotation center of the eccentric wheel, the top end of the plunger is still a certain distance from the check valve steel ball, and as the displacement of the plunger pump is very small, the gap opening amount of the oil extruded by the plunger to the check valve steel ball is very small, and an annular filter is formed in the gap when the oil passes through the gap, so that pollutants in the oil and lubricants such as graphite powder in the oil are filtered at the gap between the check valve steel ball and the conical surface of the check valve seat, the reset seal of the check valve steel ball when the plunger of the plunger pump returns to the oil suction working condition is seriously influenced, and the pressure oil which is extruded out of the check valve and is gathered to the total oil outlet is leaked back through the gap which is not tightly sealed, thereby causing the oil pump to fail.
On the other hand, a plurality of plungers of the plunger pump with the traditional structure are required to be provided with oil passages and screw plugs in corresponding quantity, so that quick oil discharge is not facilitated, equipment is easier to block and overhaul, and unstable factors are more.
Disclosure of Invention
The invention mainly aims to provide a multi-head radial plunger pump and a use method thereof, which overcome the defects of the prior art, have compact structure, increase the oil outlet efficiency of the plunger pump, improve the reliability and prolong the service life.
The invention further aims to provide a multi-head radial plunger pump and a using method thereof, which avoid the problems of easy fracture and limited axial space occupation of an axial helical compression spring of a one-way valve through the use of a tension spring ring, and effectively avoid the problem of oil pump failure caused by fatigue fracture of the spring.
The invention further aims to provide a multi-head radial plunger pump and a use method thereof, wherein oil outlet of a plurality of plunger pump plungers is collected through the annular grooves and then discharged from a total oil outlet, so that the plurality of plunger pump plungers in the traditional structure are prevented from being required to be processed with a plurality of oil through channels and screw plugs.
The invention further aims to provide a multi-head radial plunger pump and a use method thereof, which are characterized in that through increasing the design of openings between the steel balls and the conical surfaces of the valve seats, coarse particle matters of pollutants and oil additives accumulated near the steel balls and the conical surfaces of the one-way valve seats of the one-way valves are effectively discharged through the openings, the tightness of the oil outlet one-way valves is ensured, and the working reliability of the plunger pump is greatly improved.
In order to achieve the above purpose, the invention adopts the following technical scheme: the multi-head radial plunger pump comprises an oil pump body, plunger mechanisms and eccentric wheels, wherein the plunger mechanisms are installed in the oil pump body at intervals along the circumferential direction of the oil pump body, the oil pump body is provided with a driving shaft, the eccentric wheels are provided with eccentric holes, the driving shaft is connected with the eccentric holes, the eccentric wheels are rotatably installed between the plunger mechanisms, and when the eccentric wheels rotate, the plunger mechanisms sequentially reciprocate along the radial direction.
According to one embodiment of the invention, the oil pump body comprises an oil pump core body, the oil pump core body is provided with an annular groove and an oil outlet, the annular groove is annularly arranged at the periphery of the plunger mechanism, the annular groove is communicated with each plunger mechanism, and the oil outlet is communicated with the annular groove and the outside.
According to an embodiment of the invention, the oil outlet is arranged right behind the oil outlet of one of the plunger mechanisms and is communicated with the outside.
According to an embodiment of the invention, the oil pump body further comprises a seal ring, the oil pump body is provided with a first joint surface and a second joint surface, the first joint portion is adjacent to the plunger mechanism, the annular groove is formed among the seal ring, the first joint surface and the second joint surface, the seal ring comprises a first seal ring and a second seal ring, the first seal ring is installed between the first joint surface and the second joint surface, and the second seal ring is installed between the plunger mechanism and the first joint surface.
According to an embodiment of the invention, each plunger mechanism comprises a plunger sleeve, a return spring, a plunger and an oil outlet one-way valve, wherein the plunger sleeve is respectively assembled in the radial direction of the oil pump core, the plunger sleeve is provided with an inner cavity and an oil suction port, the plunger and the oil outlet one-way valve are horizontally arranged in the inner cavity in a transverse mode, the oil suction port is communicated with the inner cavity and the outside, the return spring is arranged on the outer side of the plunger sleeve so as to enable the plunger to axially return, the inner cavity of the plunger sleeve is provided with an oil suction cavity, an oil outlet cavity and an inner hole, the inner hole is communicated with the oil suction cavity and the oil outlet cavity, the oil suction port is communicated with the oil suction cavity, the plunger is axially movably transversely arranged in the oil suction cavity, the oil outlet one-way valve is arranged in the oil outlet cavity, and one oil outlet cavity is communicated with the annular groove, and one oil outlet cavity is communicated with the oil outlet.
According to the embodiment of the invention, the plunger sleeve is provided with the valve seat, the oil outlet one-way valve comprises a tension spring ring and steel balls, the steel balls face the conical surface of the valve seat, the tension spring ring elastically clamps each steel ball to enable the steel ball to return to be close to the conical surface, the tension spring ring is connected with the head end and the tail end of the tension spring to form an annular structure, the reference circle diameter of the tension spring ring is adapted to the steel ball of the clamp, and the generated elastic force is suitable for the return of the steel ball.
According to an embodiment of the invention, the oil outlet check valve is provided with a pair of openings, and when the steel ball deviates from the conical surface, the openings are formed between the steel ball and the conical surface, and the openings are suitable for the impurities in oil to pass through.
According to one embodiment of the invention, the plunger is provided with a plunger end and a plunger top, the plunger end extends from one end of the plunger in a radial expansion mode, the return spring is respectively connected with the plunger end and the outer step, the plunger top axially protrudes from the other end of the plunger to the inner hole, and the plunger top pushes against the steel ball to form the opening.
According to an embodiment of the invention, the plunger mechanism further comprises a bearing concentrically surrounding the eccentric, the bearing having an inner diameter corresponding to the eccentric such that the bearing rotates with rotation of the eccentric, each of the plunger ends abutting against the bearing.
The application method of the multi-head radial plunger pump comprises the following steps:
s100, driving the eccentric wheel to rotate through the driving shaft, wherein each plunger sequentially reciprocates in each plunger sleeve;
s120, when the end part of the plunger moves from the farthest position to the nearest position, the plunger deviates from the inner hole and moves, the stretching spring ring pushes the steel ball to prop against the conical surface, the oil suction cavity is gradually enlarged, the oil suction port is exposed, and oil is sucked into the oil suction cavity;
s130, when the end part of the plunger moves from the nearest position to the farthest position, the plunger approaches the inner hole, oil in the oil suction cavity is compressed to push away the steel ball until the end part of the plunger is at the farthest position, and the steel ball is jacked by the top of the plunger to leave the conical surface of the valve seat, so that the opening is formed;
and S140, oil passes through the opening and the oil outlet cavity, is collected to the annular groove, and is discharged through the oil outlet.
Drawings
Fig. 1 is a schematic diagram of a multi-headed radial piston pump in accordance with a preferred embodiment of the present invention.
Fig. 2 is a cross-sectional view taken along line A-A of fig. 1 in accordance with the present invention.
Fig. 3 is a schematic view of a plunger mechanism according to the above preferred embodiment of the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 3, the multi-head radial plunger pump 1 comprises an oil pump body 10, a plunger mechanism 20 and an eccentric wheel 30, wherein the plunger mechanism 20 is installed in the oil pump body 10 at intervals along the circumferential direction of the oil pump body 10, the oil pump body 10 is provided with a driving shaft 15, the eccentric wheel 30 is provided with an eccentric hole 31, the driving shaft 15 is engaged with the eccentric hole 31, so that the eccentric wheel 30 is rotatably installed between the plunger mechanisms 20, when the eccentric wheel 30 rotates, the plunger mechanisms 20 sequentially reciprocate along the radial direction, so that the plunger mechanisms 20 sequentially discharge oil, the oil discharge efficiency of the plunger pump 1 is improved, the structure is compact, the reliability is improved, and the service life is prolonged.
The oil pump body 10 comprises an oil pump core 11, the oil pump core 11 is provided with an annular groove 13 and an oil outlet 14, the annular groove 13 is annularly arranged on the periphery of the plunger mechanism 20, the annular groove 13 is communicated with each plunger mechanism 20, the oil outlet 14 is communicated with the annular groove 13 and the outside, so that the annular groove 13 can collect oil liquid of each plunger mechanism 20, and then the oil is discharged from one general oil outlet 14.
The oil outlet 14 is disposed right behind the oil outlet of one of the plunger mechanisms 20, and communicates the plunger mechanism 20 with the outside, thereby enabling the oil to be discharged more quickly.
The oil pump body 10 further includes a seal ring 12, the oil pump body 11 is provided with a first engagement surface 111 and a second engagement surface 112, the first engagement surface is adjacent to the plunger mechanism 20, and the annular groove 13 is formed between the seal ring 12, the first engagement surface 111, and the second engagement surface 112.
The sealing ring 12 includes a first sealing ring 121 and a second sealing ring 122, the first sealing ring 121 is installed between the first joint surface 111 and the second joint surface 112, the second sealing ring 122 is installed between the plunger mechanism 20 and the first joint surface 111, the sealing ring 12 is an O-ring, and is made of a permanently elastic material, so that a gap between the first joint portion and the second joint portion is sealed in an annular manner, and unnecessary overflow of oil in the annular groove 13 is effectively prevented.
Each plunger mechanism 20 comprises a plunger sleeve 21, a return spring 22, a plunger 23 and an oil outlet one-way valve 24, wherein the plunger sleeve 21 is respectively assembled on the radial direction of the oil pump core 11, the plunger sleeve 21 is provided with an inner cavity 201 and an oil suction port 211, the plunger and the oil outlet one-way valve 24 are horizontally transversely arranged in the inner cavity 201, the oil suction port 211 is communicated with the inner cavity 201 and the outside, and the return spring 22 is arranged on the outer side of the plunger sleeve 21 so as to axially reset the plunger 23.
The inner cavity 201 of the plunger sleeve 21 is provided with an oil suction cavity 202, an oil outlet cavity 203 and an inner hole 204, the inner hole 204 is communicated with the oil suction cavity 202 and the oil outlet cavity 203, the oil suction port 211 is communicated with the oil suction cavity 202, the plunger is axially movably transversely arranged in the oil suction cavity 202, the oil outlet one-way valve 24 is arranged in the oil outlet cavity 203, the oil outlet cavity 203 is communicated with the annular groove 13, one of the oil outlet cavities 203 is communicated with the oil outlet 14, and when the plunger 23 deviates from the inner hole 204 and moves until the oil suction port 211 is exposed, oil can be injected into the oil suction cavity 202 through the oil suction port 211.
The plunger sleeve 21 comprises a plunger seat 212 and a valve seat 213, the oil suction cavity 202 is formed in the plunger seat 212, the oil outlet cavity 203 is formed in the valve seat 213, the plunger seat 212 is provided with an outer step 214, the return spring 22 is deformably mounted on the outer step 214, the valve seat 213 is provided with a conical surface 215, the conical surface 215 extends obliquely upwards from the inner hole 204, and the inner diameter of the inner hole 204 is smaller than that of the oil suction cavity 202 and the oil outlet cavity 203.
The oil outlet check valve 24 includes a tension spring ring 241 and a steel ball 242, the steel ball 242 faces the conical surface 215 of the valve seat 213, and the tension spring ring 241 elastically clamps each steel ball 242, so that the steel ball 242 resets to be close to the conical surface 215, and closes the inner hole 204, so that the oil absorption cavity 202 forms a compression environment. In other words, one tension spring ring 241 elastically surrounds each steel ball 242, and each steel ball 242 is successively restored by the elastic clamping force of the tension spring ring 241.
The stretching spring ring 241 is formed by connecting the head end and the tail end of the stretching spring to form an annular structure, the reference circle diameter of the stretching spring ring 241 is adapted to clamp the steel ball 242, and the generated elastic force is adapted to reset the steel ball 242. Therefore, the space of the oil outlet cavity 203 occupied by the tension spring ring 241 is only the outer diameter of the tension spring itself, and because the circumference of the tension spring ring 241 is longer, when the oil outlet check valve 24 acts, the steel balls 242 press the tension spring ring 241, and the deformation of the tension spring ring 241 occupies a smaller proportion of the total length, thereby effectively avoiding fatigue fracture and limited axial space occupation of the conventional check valve return spring 22.
The oil outlet check valve 24 is provided with a pair of openings 243, when the steel ball 242 deviates from the conical surface 215, the openings 243 are formed between the steel ball 242 and the conical surface 215, the openings 243 are suitable for the impurities in the oil to pass through, and the elastic force generated by the stretching spring ring 241 is suitable for pushing the steel ball 242 to abut against the conical surface 215 to close the openings 243.
The plunger 23 is provided with a plunger end 231 and a plunger top 232, the plunger end 231 radially expands from one end of the plunger 23, the return spring 22 is respectively connected with the plunger end 231 and the outer step 214, when the plunger end 231 is forced to push the plunger 23 to approach the inner hole 204, the return spring 22 is compressively deformed, when the plunger end 231 removes external force, the return spring 22 reversely pushes the plunger end 231 to enable the plunger 23 to reciprocate, wherein the plunger top 232 axially protrudes from the other end of the plunger 23 to the inner hole 204 and extends, the plunger top 232 pushes the steel ball 242 to form the opening 243, when the plunger 23 is compressed, the plunger 23 pushes up the steel ball 242 of the oil outlet check valve 24 and forms the opening 243, so that pollutants, coarse particles of oil additives and the like accumulated near the conical surfaces 215 of the oil outlet check valve 24 and the valve seat 213 can pass through the opening 243 which is high, the impurities can not pass through the steel ball 242, the reliability of the oil outlet check valve 24 is greatly improved, and the reliability of the sealing mechanism is greatly guaranteed.
The plunger mechanism 20 further comprises a bearing 25, the bearing 25 concentrically surrounds the eccentric 30, the inner diameter of the bearing 25 is consistent with the eccentric 30, so that the bearing 25 rotates along with the rotation of the eccentric 30, each plunger end 231 abuts against the bearing 25, and when the eccentric 30 rotates, the bearing 25 pushes each plunger end 231 to move back and forth in sequence, so that the plunger mechanism 20 sequentially discharges oil. Thus, the bearing 25 helps to reduce wear between the eccentric 30 and the plunger end 231, which is beneficial for prolonging the service life and ensuring the oil-yielding efficiency of each plunger mechanism 20.
The plunger end 231 is adjacent to the plunger sleeve 21 when the plunger end 231 and the eccentric hole 31 are at the farthest positions, and the plunger end 231 is deviated from the plunger sleeve 21 when the plunger end 231 and the eccentric hole 31 are at the nearest positions.
The driving shaft 15 is connected to a driving motor, when the driving motor of the oil pump body 10 drives the eccentric wheel 30 and the bearing 25 to rotate through the driving shaft 15, each plunger 23 reciprocates in the respective plunger sleeve 21, when the plunger end 231 of the plunger 23 is closest to the eccentric hole 31 of the eccentric wheel 30, the plunger end 231 is at the closest position, the exposed oil suction port 211 can suck oil into the oil suction cavity 202, at this time, the stretching spring ring 241 pushes the steel ball 242 to press the conical surface 215 of the valve seat 213, when the distance between the plunger end 231 and the eccentric hole 31 is larger, that is, when the plunger end 231 moves from the closest position to the farthest position, the oil suction port 211 is closed, the oil in the oil suction cavity 202 is compressed, so that the steel ball 242 can press oil into the oil discharge cavity 203, the steel ball 242 is opened, the clamp force provided by the stretching spring ring 241 overcomes the clamp force, so that the oil is sucked into the oil discharge cavity 203, when the distance between the steel ball 242 and the steel ball 215 gradually increases to the farthest position from the eccentric hole 31, the oil suction port 243 is separated from the piston end 231 to the largest, and the piston end 243 is separated from the top 13, and the piston end 243 is separated from the largest, and the piston end 231 is separated from the top 13 to the largest, and the piston end 243 is separated from the largest distance between the piston end 213 and the piston end 31. When the plunger end 231 is moved from the farthest position to the nearest position by the return spring 22, the plunger top 232 is deviated from the steel ball 242, the steel ball 242 is reset against the conical surface 215 by the elastic force of the tension spring ring 241, and the plunger 23 is moved reversely to expose the oil suction port 211 for sucking oil.
The application method of the multi-head radial plunger pump 1 comprises the following steps:
s100, driving a motor to drive the eccentric wheel 30 to rotate through the driving shaft 15, wherein each plunger sequentially reciprocates in the plunger sleeve 21;
s120, when the plunger end 231 moves from the farthest position to the nearest position, the plunger deviates from the inner hole 204 and moves, the stretching spring ring 241 pushes the steel ball 242 to prop against the conical surface 215, the oil suction cavity 202 is gradually enlarged, the oil suction port 211 is exposed, and oil is sucked into the oil suction cavity 202;
s130, when the plunger end 231 moves from the nearest position to the farthest position, the plunger approaches the inner hole 204, the oil in the oil suction cavity 202 is compressed to push away the steel ball 242 until the plunger end 231 is at the farthest position, and the steel ball 242 is jacked by the plunger top 232 to leave the conical surface 215 of the valve seat 213, so as to form the opening 243;
and S140, oil passes through the opening 243 and the oil outlet cavity 203, is gathered to the annular groove 13, and is discharged through the oil outlet 14.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a bull radial plunger pump, its characterized in that includes the oil pump body, plunger mechanism and eccentric wheel, plunger mechanism follows the circumferencial direction of the oil pump body is installed with interval in the oil pump body, the oil pump body is equipped with the drive shaft, the eccentric wheel is equipped with the eccentric hole, the drive shaft joint in the eccentric hole makes the eccentric wheel rotatably installs between the plunger mechanism, when the eccentric wheel rotates, plunger mechanism reciprocates along radial direction in succession, wherein, each plunger mechanism includes plunger sleeve, reset spring, plunger and go out oily check valve, the oil pump body includes the oil pump core body, the plunger sleeve assemble respectively in the radial direction of the oil pump core body, the plunger sleeve is equipped with inner chamber and oil suction port, plunger and go out oily check valve horizontal direction and transversely arrange in the inner chamber, the inner chamber of plunger sleeve is equipped with the oil suction cavity, the plunger housing is equipped with plunger seat and disk seat, the oil suction cavity forms in the plunger seat, go out oily check valve includes extension ring and steel ball, reset spring ring, the diameter of extension spring ring is suitable for the extension spring ring and the steel ball draw collar, the extension spring clamp is held by the diameter of extension spring ring is held by the steel ball.
2. The multi-head radial plunger pump according to claim 1, wherein the oil pump core is provided with an annular groove and an oil outlet, the annular groove is annularly arranged at the periphery of the plunger mechanism, the annular groove is communicated with each plunger mechanism, and the oil outlet is communicated with the annular groove and the outside.
3. The multi-head radial plunger pump according to claim 2, wherein the oil outlet is arranged right behind the oil outlet of one of the plunger mechanisms and is communicated with the outside.
4. A multi-headed radial piston pump as set forth in claim 3 wherein said oil pump body further comprises a seal ring, said oil pump body having a first engagement surface and a second engagement surface, said first engagement surface being adjacent said plunger mechanism, said annular groove being formed between said seal ring, first engagement surface and second engagement surface, said seal ring comprising a first seal ring mounted between said first engagement surface and said second engagement surface, and a second seal ring mounted between said plunger mechanism and said first engagement surface.
5. The multi-head radial plunger pump according to any one of claims 2 to 4, wherein the oil suction port is communicated with the inner cavity and the outside, the return spring is arranged on the outer side of the plunger sleeve so as to axially return the plunger, the inner cavity of the plunger sleeve is provided with an oil outlet cavity and an inner hole, the inner hole is communicated with the oil suction cavity and the oil outlet cavity, the oil suction port is communicated with the oil suction cavity, the plunger is transversely arranged in the oil suction cavity in an axially movable mode, the oil outlet check valve is arranged in the oil outlet cavity, the oil outlet cavity is communicated with the annular groove, and one of the oil outlet cavities is communicated with the oil outlet.
6. The multi-headed radial piston pump of claim 5, wherein said oil outlet check valve is provided with a pair of openings formed between said steel ball and said tapered surface when said steel ball is offset from said tapered surface, said openings being adapted for the passage of impurities in the oil.
7. The multi-headed radial piston pump of claim 6, wherein said plunger is provided with a plunger end portion and a plunger tip portion, said plunger end portion extending radially from one end of said plunger, said return spring connecting said plunger end portion and said outer step, respectively, said plunger tip portion extending axially protruding from the other end of said plunger toward said inner bore, said plunger tip portion pushing against said steel ball to form said opening.
8. The multi-headed radial plunger pump of claim 7, wherein the plunger mechanism further comprises
And the bearing concentrically surrounds the eccentric wheel, and the inner diameter of the bearing is consistent with that of the eccentric wheel, so that the bearing rotates along with the rotation of the eccentric wheel, and each plunger end abuts against the bearing.
9. The method of using a multi-headed radial piston pump as set forth in claim 7 or 8, comprising the steps of:
s100, driving the eccentric wheel to rotate through the driving shaft, wherein each plunger sequentially reciprocates in each plunger sleeve;
s120, when the end part of the plunger moves from the farthest position to the nearest position, the plunger deviates from the inner hole and moves, the stretching spring ring pushes the steel ball to prop against the conical surface, the oil suction cavity is gradually enlarged, the oil suction port is exposed, and oil is sucked into the oil suction cavity;
s130, when the end part of the plunger moves from the nearest position to the farthest position, the plunger approaches the inner hole, oil in the oil suction cavity is compressed to push away the steel ball until the end part of the plunger is at the farthest position, and the steel ball is jacked by the top of the plunger to leave the conical surface of the valve seat, so that the opening is formed;
and S140, oil passes through the opening and the oil outlet cavity, is collected to the annular groove, and is discharged through the oil outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711429709.3A CN107939628B (en) | 2017-12-26 | 2017-12-26 | Multi-head radial plunger pump and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711429709.3A CN107939628B (en) | 2017-12-26 | 2017-12-26 | Multi-head radial plunger pump and application method thereof |
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| Publication Number | Publication Date |
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| CN107939628A CN107939628A (en) | 2018-04-20 |
| CN107939628B true CN107939628B (en) | 2023-07-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108571432A (en) * | 2018-06-22 | 2018-09-25 | 上海坤释流体科技有限公司 | A kind of corrosion-resistant eccentric wheel pump |
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| EP2660459B1 (en) * | 2012-05-03 | 2016-04-06 | Delphi International Operations Luxembourg S.à r.l. | Load reduction |
| CN103696921B (en) * | 2013-12-13 | 2015-10-21 | 西安交通大学 | A kind of valve flow distribution radial plunger oil hydraulic pump adopting hydraulic coupling backhaul |
| CN203584702U (en) * | 2013-12-16 | 2014-05-07 | 宁波赛维思机械有限公司 | Radial piston pump |
| CN207728501U (en) * | 2017-12-26 | 2018-08-14 | 浙江三浪润滑科技有限公司 | A kind of bull radial plunger pump |
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2017
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| US4790731A (en) * | 1986-12-10 | 1988-12-13 | Steyr-Daimler Puch Ag | Fuel injection pump for diesel engines |
| CN102135229A (en) * | 2011-03-31 | 2011-07-27 | 北京中冶华润科技发展有限公司 | Grease plunger pump |
| CN106870315A (en) * | 2017-04-05 | 2017-06-20 | 上海申贝泵业制造有限公司 | It is a kind of to be pressurized pump transmission mechanism and the opposed type booster pump using the transmission mechanism |
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| CN107939628A (en) | 2018-04-20 |
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