CN111102155B - Reciprocating linear double-cylinder hydraulic pump - Google Patents
Reciprocating linear double-cylinder hydraulic pump Download PDFInfo
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- CN111102155B CN111102155B CN202010126460.4A CN202010126460A CN111102155B CN 111102155 B CN111102155 B CN 111102155B CN 202010126460 A CN202010126460 A CN 202010126460A CN 111102155 B CN111102155 B CN 111102155B
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- sleeve
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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
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
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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
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
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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
- F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
- F04B19/20—Other positive-displacement pumps
- F04B19/22—Other positive-displacement pumps of reciprocating-piston type
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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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a reciprocating linear double-cylinder hydraulic pump which comprises an outer cover, a rotor assembly and a liquid suction and discharge assembly. The rotor component comprises a cone valve, a permanent magnet and a reciprocating sleeve, the permanent magnet is embedded in two grooves in the outer wall of the reciprocating sleeve, the reciprocating sleeve embedded with the permanent magnet can be fixed through the magnetic yoke, two ends of the magnetic yoke are respectively matched with the inner end wall and the left end cover of the outer cover, the reciprocating sleeve is fixedly installed, two sides of the reciprocating sleeve are respectively assembled with the piston, and the cone valve, a valve core shaft and a liquid discharge nut are installed at the outer opening end of the piston. The permanent magnet magnetic block can pass through the coil fixed on the magnetic yoke to do reciprocating linear motion, so that the reciprocating sleeve is driven to move, the reciprocating sleeve is driven to compress liquid to do work, low-pressure liquid is compressed into high-pressure liquid, and the liquid has pressure energy. The reciprocating linear double-cylinder hydraulic pump has the advantages of compact structure, stable operation, energy conservation, high efficiency, low noise, large displacement, prolonged service life and the like.
Description
Technical Field
The invention relates to the technical field of linear hydraulic pumps, in particular to a reciprocating linear double-cylinder hydraulic pump.
Background
One component of a reciprocating hydraulic pump that provides pressurized fluid for hydraulic transmission is the pump. The hydraulic fluid machine has the function of converting the mechanical energy of a power machine (such as a motor, an internal combustion engine and the like) into the pressure energy of liquid and lifting low-pressure liquid into high-pressure liquid. The service life of the hydraulic pump is influenced by a plurality of factors, and the factors are related to the selection of some elements (such as a coupler, an oil filter and the like) related to the use of the pump, the operation in the test run process and the like besides the design and the manufacture of the pump. The principle of operation of a hydraulic pump is that movement causes a change in the volume of the pumping chamber, thereby compressing fluid to impart pressure energy to the fluid. The condition that must be met is that the sealed volume of the pump chamber changes. The flow of the reciprocating hydraulic pump on the market at present is not very stable, and is larger than that of a centrifugal pump under the same flow, the mechanism is complex, the fund consumption is large, the number of parts is large, the fault is easy to occur, the maintenance is not easy, and the like.
Compared with the prior art, the reciprocating linear hydraulic pump is more and more emphasized, a crank-link mechanism can be omitted, friction loss is reduced, and system efficiency and reliability are improved. Compared with other types of hydraulic pumps, the reciprocating linear double-cylinder hydraulic pump has the advantages of more compact structure, smaller volume, larger power, higher efficiency and longer service life.
In order to further improve the performance and the operation efficiency of the compressor and prolong the service life, the structure of the compressor needs to be further optimized and designed on the basis of the structure of the existing compressor, so that the structure of the compressor is more compact, the volume of the compressor is reduced, and the compression stroke is fully utilized to improve the working efficiency.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a reciprocating linear double-cylinder hydraulic pump with a novel structure, which adopts a permanent magnet and a reciprocating sleeve to form a combined body, thereby simplifying the volume, reducing the air gap, greatly reducing the possibility of magnetic flux leakage, and fully utilizing the compression stroke to improve the working efficiency.
In order to achieve the purpose, the invention provides a reciprocating linear double-cylinder hydraulic pump which comprises a hydraulic pump outer cover, a stator assembly, a rotor assembly and a constant-pressure liquid sucking and discharging assembly, wherein the stator assembly and the rotor assembly are positioned in the hydraulic pump outer cover, the stator assembly comprises a valve core shaft, a piston, a left end cover and a right end cover, a magnetic yoke, a constant-pressure piston and the like which are positioned on the central axis of the hydraulic pump outer cover, and the left end cover and the right end cover fix the piston.
The rotor assembly comprises a conical valve, a permanent magnet and a reciprocating sleeve, the permanent magnet is embedded in two grooves in the outer wall of the reciprocating sleeve, the assembly can be assembled through the coil, the reciprocating sleeve is fixedly connected, two sides of the reciprocating sleeve are matched and assembled with the piston respectively, and the conical valve, a liquid discharge nut and a valve core shaft are installed at the outer opening end of the piston rod respectively.
The reciprocating sleeve is embedded with a permanent magnet block, the permanent magnet block and the reciprocating sleeve assembly can penetrate through the inner gap of the coil to perform linear reciprocating motion to drive the permanent magnet to move so as to drive the reciprocating sleeve to perform linear reciprocating motion left and right to compress liquid to do work to perform bidirectional alternate liquid discharge, the permanent magnet drives the reciprocating sleeve to move left, the left end cylinder enters a working state to discharge liquid, the reciprocating sleeve returns to move right to enable the right end cylinder to enter the working state to discharge liquid, and the whole hydraulic pump system achieves a more ideal high-efficiency working state by adopting reciprocating double-cylinder liquid discharge.
Furthermore, a constant-pressure liquid suction and discharge assembly is arranged in the outer cover of the hydraulic pump.
The constant voltage flowing back subassembly divide into two parts, and one of them part is the rubber sleeve, and the constant voltage piston of another part for having the sealing washer, wherein the constant voltage piston with the rubber sleeve is overlapped in proper order the hydraulic pump dustcoat left end cylinder end, the constant voltage piston left end with left end lid in close contact with guarantees that exhaust pressurization liquid pressure is invariable, the rubber sleeve does the constant voltage piston provides the constant voltage and supports, and exhaust liquid pressure depends on the material of rubber sleeve.
The liquid suction one-way valve penetrates through the body side through hole of the reciprocating sleeve.
Furthermore, the liquid suction and discharge cavity is divided into two parts, wherein one part is a cylindrical cavity, the other part is an irregular stepped cylindrical cavity with a conical valve, one end of the cylindrical cavity is communicated with the reciprocating sleeve cavity, one end of the irregular stepped cylindrical cavity is communicated with one end of the cylindrical cavity through the conical valve, and the other end of the irregular stepped cylindrical cavity and the liquid discharge nut form a cavity so that the flow area is changed and the liquid pressure is increased.
Preferably, a group of coils are wound on the cavity of the magnetic yoke and the permanent magnet.
The magnetic yoke is composed of two steel bodies in a semi-column E shape, and the middle part of the magnetic yoke in the semi-column E-shaped structure is provided with an arc-shaped groove group for fixing the wound coil group.
And a lead slot is arranged at the groove of the magnetic yoke, and the wound coil group is led out through the lead slot.
Preferably, the reciprocating sleeve is characterized in that the left end and the right end of the reciprocating sleeve are respectively matched with the piston, a through hole is formed in the middle of the reciprocating sleeve, one end of the through hole in the middle of the reciprocating sleeve is fixedly assembled with the liquid inlet valve, and the other end of the through hole in the middle of the reciprocating sleeve is matched with the liquid blocking block.
Furthermore, the feed liquor hole has been seted up to the hydraulic pump dustcoat, can directly dip work in waiting to compress the liquid, wait to compress the liquid and can directly get into the compression jar through the dustcoat in, so, can reach self cooling effect, increase of service life through liquid in the work.
The left end and the right end of the reciprocating sleeve are provided with annular grooves, the left end groove of the reciprocating sleeve is matched with the right end of the left cylindrical resonant spring, and the right end groove of the reciprocating sleeve is matched with the left end of the right cylindrical resonant spring.
The left end of the cylindrical resonance spring is fixedly contacted with the inner groove of the hydraulic pump outer cover, and the right end of the cylindrical resonance spring is fixedly contacted with the inner groove of the right end cover.
Furthermore, the resonance cylindrical spring comprises a left resonance cylindrical spring and a right resonance cylindrical spring, the piston is correspondingly divided into a left piston and a right piston, the left resonance cylindrical spring is sleeved on the left piston, and the right resonance cylindrical spring is sleeved on the right piston.
Two ends of the right resonance cylindrical spring are respectively and fixedly contacted with the right end cover and the annular groove at the right end of the reciprocating sleeve; and two ends of the left resonance cylindrical spring are respectively in fixed contact with the hydraulic pump outer cover and the annular groove at the left end of the reciprocating sleeve.
Preferably, the piston comprises a left piston and a right piston, a groove is formed in the small end of the piston, a sealing ring is arranged in the groove, the left end of the left piston is matched with the groove in the left end of the hydraulic pump outer cover, namely, the small end extends into the reciprocating sleeve at the left end of the reciprocating sleeve, and the left end of the right piston, namely, the small end extends into the reciprocating sleeve at the right end of the reciprocating sleeve, and the right end is matched with the groove in the right end cover.
Optionally, the piston is provided with a central stepped through hole, a central hole at one end with an outer edge is matched with the drainage nut, and a threaded hole is formed at one end of the drainage nut and connected with the valve core shaft.
Furthermore, the side surface of the liquid discharge nut is processed with external threads, the surface of the liquid discharge nut is provided with through holes and the through holes are uniformly distributed on the liquid discharge nut in a circumferential array mode, and the liquid discharge nut and the piston are mutually fixed through the external threads.
Optionally, the drain nut is connected with the conical valve through a valve core shaft, a spring is arranged around the valve core shaft, the left end of the spring is in contact with the right end face of the drain nut, the right end of the spring is in contact with the conical valve, and the tail of the conical valve is provided with an extending part with a smaller diameter which is just matched with the inner diameter of the spring.
The conical valve can move left and right on the valve core shaft, the conical valve is tightly attached to the inner hole of the piston, and when the liquid pressure reaches the opening pressure of the conical valve, the conical valve is opened to discharge liquid through the notch of the conical valve.
In addition, the reciprocating linear double-cylinder hydraulic pump with the novel structure adopts the reciprocating sleeve to form a double-row hydraulic cylinder with left and right double pistons, the permanent magnet drives the reciprocating sleeve to move the left end cylinder leftwards to enter a working state for discharging liquid, the reciprocating sleeve returns to the right in a return process to move the right end cylinder to enter the working state for discharging liquid, and the reciprocating double-rod liquid discharging is adopted to enable the whole compressor system to achieve a more ideal high-efficiency working state. This linear double-cylinder hydraulic pump of reciprocating motion formula of novel structure improves the design to part structures such as yoke, reciprocal cover, because the feed liquor hole has been seted up to the dustcoat and can work in direct immersion liquid, can reach cooling effect, increase of service life through liquid in work. The permanent magnet support and the reciprocating sleeve are integrated, the permanent magnet mounting groove is formed in the surface of the reciprocating sleeve, and the number of parts is reduced. Carry out the optimal design of structure through each part to inhaling in the exhaust subassembly, make whole inhaling exhaust part have stable liquid discharge pressure through the cooperation of rubber sleeve with the constant voltage piston, required liquid discharge pressure size can be adjusted through the material of changing the rubber sleeve.
Drawings
Fig. 1 is a sectional view schematically showing the overall structure of a reciprocating linear double-cylinder hydraulic pump according to the present invention.
Fig. 2 is another sectional view schematically showing the overall structure of the reciprocating linear double-cylinder hydraulic pump of the present invention.
Fig. 3 is a perspective view of the internal overall structure of the reciprocating linear double-cylinder hydraulic pump of the present invention.
Fig. 4 is a left side view and a right side view of the overall structure of the reciprocating linear double cylinder hydraulic pump of the present invention.
Fig. 5 is a left and right side view of the internal overall structure of the reciprocating linear double cylinder hydraulic pump of the present invention.
FIG. 6 is a schematic view of the left end cap of the reciprocating linear dual cylinder hydraulic pump of the present invention.
Fig. 7 is a schematic view of a yoke of the reciprocating linear double cylinder hydraulic pump of the present invention.
Fig. 8 is a schematic view of the piston of the reciprocating linear double cylinder hydraulic pump of the present invention.
FIG. 9 is a schematic view of a reciprocating sleeve of the reciprocating linear dual cylinder hydraulic pump of the present invention.
In the figure, 1, end cap; 2. a constant pressure piston; 3. a rubber sleeve; 4. a housing; 5. a magnetic yoke; 6. a right end cap; 7. a piston; 8. a reciprocating sleeve; 9. a cone valve; 10. a spool shaft; 11. a liquid blocking block; 12. a seal ring; 13. a right outer end cover; 14. a coil; 15. a single liquid inlet valve; 16. a piston seal ring; 17. a permanent magnet; 18. a resonant spring; 19. a drain nut; 20. a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
It should be noted that all the directional indicators (such as outer, inner, left and right … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly. Where "left" corresponds to the left side in fig. 1 and "right" corresponds to the right side in fig. 1.
The reciprocating linear double cylinder hydraulic pump of the present invention, which is commonly applied in various fields of mining and metallurgical industry, electric power, national defense construction, agriculture, etc., will be described in detail with reference to fig. 1 to 9.
The invention relates to a reciprocating linear double-cylinder hydraulic pump, which comprises a hydraulic pump outer cover 4, a rotor component, a liquid sucking and discharging component, a stator component and end covers 1,6 and 13, wherein the stator component comprises a magnetic yoke 5, a coil 13, a constant pressure piston 2, a rubber sleeve 3, a valve core shaft 10 and a resonant spring 18, the hydraulic pump outer cover 4 is integrally in a step shape, the hydraulic pump outer cover 4 is integrally formed by a cylinder at the left end and a fillet square at the right end, a through hole is arranged in the hydraulic pump outer cover, the diameter of the through hole is just matched with the diameter of a combined body assembled by the internal components, the components are fixed, four threaded holes are arranged at the left end and the right end of the fillet square of the hydraulic pump outer cover 4 for installation, the left end of the hydraulic pump outer cover 4 is connected with the left end cover 1 through screws, the left end cover 1 is provided with a circular table through, the interior is provided with a through hole. 4 left end cylinders of hydraulic pump dustcoat insert 1 intracavity of left end cover, install on the cylinder of hydraulic pump dustcoat left end about constant voltage piston 2 and rubber sleeve 3 in proper order, the installation that is used for left seal circle 12 is seted up flutedly in the middle part of the constant voltage piston. The right end of the hydraulic pump housing 4 is connected with the right end cover 6 through a screw, the right end cover 6 is in a stepped cylindrical shape, the right end is in a column shape, the left end is a rounded square body with the same size as the hydraulic pump housing 4, a threaded hole is formed in the rounded square body, and a through hole is formed in the rounded square body. 4 right-hand members of hydraulic pump dustcoat closely laminate with the 6 left ends of right-hand member lid, install in proper order on the 6 right-hand member cylinders of right-hand member lid about constant voltage piston 2 and the 3 right sides of rubber sleeve, the installation that is used for right sealing washer 12 is seted up flutedly in the middle part of the constant voltage piston.
A magnetic yoke 5 is arranged in a hydraulic pump outer cover 4, the magnetic yoke 5 is composed of two steel bodies in a semi-cylindrical E-shaped structure, end face concave surfaces are arranged at two ends of the magnetic yoke 5 in the semi-cylindrical E-shaped structure so as to be convenient for mounting a right end cover, two semi-arc-shaped grooves are arranged in the middle of the magnetic yoke 5, two wound coils 14 can be directly fixed on a fixed group composed of the two magnetic yokes 5, and left and right wound coil 14 groups can be directly led out from a lead groove on the magnetic yoke 5.
The rotor component comprises a magnetic yoke 5, a piston 7, a reciprocating sleeve 8, a permanent magnet 17, a valve core shaft 10, a conical valve 9 and resonant cylindrical springs 18 and 20, wherein the magnetic yoke 5 is positioned on the central axial direction of a hydraulic pump outer cover 4, the permanent magnet 17 is a plurality of block-shaped magnets embedded in two grooves on the outer wall of the reciprocating sleeve 8, a combination body formed by the reciprocating sleeve 8 and the permanent magnet 7 can penetrate through the inside of a coil 14, the reciprocating sleeve 8 is fixedly connected, two sides of the reciprocating sleeve are respectively matched and assembled with the piston 7, the piston 7 is divided into a left piston part and a right piston part, the conical valve core 10 is respectively installed at the outer opening end, a permanent magnet 17 magnetic block is embedded on the reciprocating sleeve 8, the permanent magnet 17 magnetic block and the reciprocating sleeve 8 combination body penetrate through a gap of the coil 14 to perform reciprocating linear motion to drive the permanent magnet combination body to move, and, the low-temperature low-pressure liquid is compressed into high-temperature high-pressure liquid, so that the liquid has pressure energy.
Two ends about 8 reciprocal cover are seted up symmetrical ladder toper through-hole and are seted up the ring channel about the end, and the surface still is equipped with the permanent magnet mounting groove, and the small-bore end of left piston 7 inserts 8 left end ladder bell mouth of reciprocal cover, and the small-bore end of right piston 7 inserts 8 right-hand member ladder bell mouth of reciprocal cover, 8 middle parts of reciprocal cover are seted up a path through-hole promptly the feed liquor hole is seted up perpendicularly with above-mentioned ladder toper through-hole, feed liquor hole one end and single feed liquor valve 15 fixed matching, and the other end cooperatees with hindering liquid piece 11. The single-phase liquid inlet valve 15 is characterized in that external threads are machined on the side surface of the single-phase liquid inlet valve 15, six through holes are formed in the surface of the single-phase liquid inlet valve and are uniformly distributed on a nut in a circumferential array mode, the uniformly distributed involute grooves enable a liquid discharging nut to be matched with the piston 7, the inner side of the single-phase liquid inlet valve 15 is connected with the conical valve 9 through the conical valve core 10, and a resonance 20 spring is arranged around the conical valve core 10.
The left end groove of the reciprocating sleeve 8 is matched with the right end of the left cylindrical resonant spring, and the right end groove of the reciprocating sleeve 8 is matched with the left end of the right cylindrical resonant spring 18; the left end of the cylindrical resonance spring 18 is fixedly contacted with the inner groove of the hydraulic pump housing 4, and the right end of the cylindrical resonance spring 18 is fixedly contacted with the inner groove of the right end cover 6; the resonant cylindrical spring comprises a left resonant cylindrical spring and a right resonant cylindrical spring, the piston 7 is correspondingly divided into a left piston and a right piston, the left resonant cylindrical spring 18 is sleeved on the left piston 7, and the right resonant cylindrical spring is sleeved on the right piston; two ends of the right resonance cylindrical spring are respectively and fixedly contacted with the right end cover 6 and the annular groove at the right end of the reciprocating sleeve 8; and two ends of the left resonance cylindrical spring are respectively in fixed contact with the hydraulic pump outer cover 4 and the annular groove at the left end of the reciprocating sleeve 8.
The liquid suction and discharge assembly comprises a liquid suction one-way valve 15, a liquid discharge nut 19, a constant pressure piston 2, a cone valve 9, a liquid discharge pipe and a cavity, wherein the cone valve 9 and the liquid discharge nut 19 are fixed on the end surface of the piston 7 through threads; the piston 7 comprises a left piston and a right piston, the left piston and the right piston are assembled at two ends of the reciprocating sleeve 8 in a mirror image mode, a groove is formed in the small end of the piston 7 and used for assembling a piston sealing ring 16, the left end of the left piston 7 is matched with the groove in the left end of the hydraulic pump outer cover 4, the right end of the left piston is matched with the small end of the hydraulic pump outer cover 4 and extends into the reciprocating sleeve in the left end of the reciprocating sleeve 8, the left end of the right piston 7 is matched with the small end of the reciprocating sleeve in the right end of the reciprocating sleeve 8, the right end of the right piston is matched with the groove in the right end cover 6, the piston 7 is provided with a central step-shaped through hole, a central hole in one end with an outer edge. The valve core shaft 10 is in a stepped cylindrical shape, a section of thread is arranged at the tail part of the valve core shaft and matched with the liquid discharge nut 19, the surface of the rest part is smooth, the valve core shaft is conveniently connected with the conical valve 9, a resonant spring 20 is arranged around the valve core shaft 10, the head part of the conical valve 9 is in a circular truncated cone shape, the tail part of the conical valve is provided with a cylindrical extending part with a smaller diameter, a through hole is formed in the cylindrical extending part, the cylindrical extending part is sleeved on the valve core shaft 10, the outer end of a circular truncated cone-shaped valve cap abuts against the inner side of the valve; the cone valve 10 can move left and right on the valve core shaft, the cone valve is tightly attached to the inner hole of the piston 7, and when the liquid pressure reaches the opening pressure of the cone valve, the cone valve is opened to discharge liquid.
The liquid discharge silencing assembly is divided into two parts, wherein one part is a cylindrical cavity, the other part is an irregular stepped cylindrical cavity with a conical valve 9, one end of the cylindrical cavity is communicated with the cavity of the reciprocating sleeve 8, one end of the irregular stepped cylindrical cavity is communicated with one end of the cylindrical cavity through the conical valve, and the other end of the irregular stepped cylindrical cavity and the liquid discharge nut 19 form a cavity, so that the flow area is subjected to secondary mutation, and the working noise of the compressor is controlled.
The whole working process of the reciprocating linear double-cylinder hydraulic pump comprises the following steps: under the condition of alternating current on the left coil and the right coil of the compressor, the left coil and the right coil generate alternating magnetic fields, under the condition, the direction of the magnetic field force borne by the permanent magnet magnetic block 17 arranged on the reciprocating sleeve 8 is also continuously changed, under the driving of the magnetic field force with the changed direction, the permanent magnet magnetic block 17 drives the reciprocating sleeve 8 to start to do left-right reciprocating linear movement, so that the volume of the cavity is changed, the piston is driven to compress a liquid body to do work, the piston moves to compress the low-temperature low-pressure liquid into high-temperature high-pressure liquid, and the liquid has pressure energy.
According to the invention, the permanent magnet 17 is embedded on the reciprocating sleeve 8, so that an air gap is reduced, the volume of the pump body is reduced, the connecting part is tightly attached to the spring group and the left and right end covers, all parts are uniformly stressed, and the pressure of discharged liquid is controlled by the arrangement of the constant-pressure liquid suction and discharge assembly. According to the invention, by optimizing the structures of a plurality of parts, the effects of compact structure, stable connection, high efficiency in operation, convenience in installation and inspection, reduction in production cost and prolongation of service life of the compressor are realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a linear double-cylinder hydraulic pump of reciprocating motion formula, includes hydraulic pump dustcoat (4), is located stator module, runner subassembly, constant voltage imbibition subassembly and constant voltage flowing back subassembly in hydraulic pump dustcoat (4), its characterized in that:
the stator assembly comprises a piston (7) positioned on the central axis of a hydraulic pump outer cover (4), a piston sealing ring (16) arranged around a groove of the piston (7), the hydraulic pump outer cover (4) for fixing the piston (7), a right end cover (6) and a valve core shaft (10); the outer end of the piston (7) is matched with a liquid discharge nut (19), and a magnetic yoke (5) positioned in the hydraulic pump outer cover (4) fixes a coil (14) at a determined position;
the rotor assembly comprises a reciprocating sleeve (8) axially penetrating through the magnetic yoke (5), a magnetic block permanent magnet (17) which is positioned between the reciprocating sleeve (8) and the coil (14) and embedded on the reciprocating sleeve (8), and a conical valve (9) which is positioned inside the piston (7) and the reciprocating sleeve (8) and matched with the valve core shaft (10);
the magnetic block permanent magnet (17) can penetrate through the coil (14), the reciprocating motion of the magnetic block permanent magnet (17) drives the reciprocating sleeve (8), so that the volume of a constant-pressure liquid drainage cavity formed by the reciprocating sleeve (8) and the piston (7) is changed, the liquid in the compression cavity works, and low-pressure liquid is compressed into high-pressure liquid;
a constant-pressure liquid suction assembly and a constant-pressure liquid discharge assembly are also arranged in the hydraulic pump outer cover (4);
the constant-pressure liquid suction assembly and the constant-pressure liquid discharge assembly comprise a constant-pressure piston (2), a rubber sleeve (3), a one-way liquid inlet valve (15), a liquid discharge nut (19), a conical valve (9), a valve core shaft (10) and a spring (20), the one-way liquid inlet valve (15), the liquid discharge nut (19), the conical valve (9), the valve core shaft (10) and the spring (20) jointly form a liquid suction valve, and the conical valve (9) and the liquid discharge nut (19) are respectively fixed on the end faces of the reciprocating sleeve (8) and the piston (7) through anti-loosening threads; the reciprocating sleeve (8) is radially provided with a through hole, and the one-way liquid inlet valve (15) is inserted into the cavity of the reciprocating sleeve (8) from one side of the through hole;
constant voltage flowing back subassembly divide into two parts, and one of them part is rubber sleeve (3), and another part is constant voltage piston (2) that have sealing washer (12), wherein constant voltage piston (2) with rubber sleeve (3) overlap in proper order the hydraulic pump dustcoat (4) left end cylinder end, constant voltage piston (2) left end and left end lid (1) in close contact with guarantee that exhaust pressurization liquid pressure is invariable, rubber sleeve (3) do constant voltage piston (2) provide the constant voltage and support, and exhaust liquid pressure depends on the material of rubber sleeve (3).
2. The reciprocating linear double-cylinder hydraulic pump according to claim 1, characterized in that the piston (7) is divided into two parts of a liquid suction cavity and a liquid discharge cavity, wherein the liquid suction cavity is a cylindrical cavity, the liquid discharge cavity is an irregular stepped cylindrical cavity with a cone valve (9), one end of the cylindrical cavity is communicated with the cavity of the reciprocating sleeve (8), one end of the irregular stepped cylindrical cavity is communicated with one end of the cylindrical cavity through the cone valve (9), and the other end of the irregular stepped cylindrical cavity and the liquid discharge nut (19) form a cavity to change the flow area so as to increase the liquid pressure.
3. The reciprocating linear double-cylinder hydraulic pump according to claim 1, characterized in that a set of coils (14) wound in positive and negative directions are respectively wound at the cavity between the magnetic yoke (5) and the reciprocating sleeve (8);
the magnetic yoke (5) is composed of two semi-cylindrical E-shaped steel body structures and is provided with two semi-arc-shaped grooves, and the wound coil (14) can be directly fixed on a fixing group composed of the magnetic yoke (5);
and a lead slot is arranged at the groove of the magnetic yoke (5), and the wound coil (14) is led out through the lead slot.
4. The reciprocating linear double-cylinder hydraulic pump according to claim 1, characterized in that the left and right ends of the reciprocating sleeve (8) are respectively matched with the piston (7), a through hole is arranged in the middle of the reciprocating sleeve, one end of the through hole in the middle of the reciprocating sleeve (8) is fixedly assembled with the liquid suction valve, and the other end of the through hole is matched with the liquid blocking block (11);
reciprocating sleeve (8) is equipped with left end annular groove and right-hand member annular groove, reciprocating sleeve's (8) left end annular groove cooperatees with left cylindrical resonance spring (18) one end, reciprocating sleeve's (8) right-hand member annular groove cooperatees with right cylindrical resonance spring (18) one end.
5. The reciprocating linear double-cylinder hydraulic pump according to claim 4, characterized in that the left end of the left cylindrical resonance spring (18) is fixedly contacted with the inner groove of the hydraulic pump housing (4), and the right end of the right cylindrical resonance spring (18) is fixedly contacted with the inner groove of the right end cover (6);
piston (7) divide into left piston and right piston, left side cylindrical resonance spring (18) center on left piston (7), right side cylindrical resonance spring (18) center on right piston (7), left side cylindrical resonance spring (18) right-hand member with reciprocal cover (8) left end annular groove fixed contact, right side cylindrical resonance spring (18) with reciprocal cover (8) right-hand member annular groove fixed contact.
6. The reciprocating linear double-cylinder hydraulic pump according to claim 5, characterized in that a piston sealing ring (16) is arranged in a groove at the right end of the left piston (7), the left end of the left piston is matched with a groove of the hydraulic pump housing (4), a piston sealing ring (16) is arranged in a groove at the left end of the right piston (7), and the right end of the right piston is matched with the right end cover (6);
a step-shaped through hole is axially formed in the piston (7), and one end of the step-shaped through hole is matched with the liquid discharge nut (19).
7. The reciprocating linear double-cylinder hydraulic pump according to claim 1, characterized in that the surface of the drain nut (19) is processed with involute grooves, six through holes are arranged on the surface and are uniformly distributed on the drain nut in a circumferential array manner, and the uniformly distributed involute grooves enable the drain nut (19) to be tightly matched with the piston (7).
8. The reciprocating linear double cylinder hydraulic pump according to claim 1, characterized in that the drain nut (19) is connected with the cone valve (9) through a spool shaft (10) around which a spring (20) is provided;
one end of the spring (20) is contacted with the right end face of the liquid discharge nut (19), the other end of the spring is contacted with the conical valve (9), and the tail part of the conical valve (9) is provided with a protruding part with a smaller diameter which is just matched with the inner diameter of the spring (20);
the cone valve (9) can linearly move left and right on the valve core shaft (10), the cone valve (9) is tightly attached to the step of the stepped through hole of the piston (7), when the liquid pressure reaches the opening pressure of the cone valve (9), the cone valve (9) is opened, and liquid is discharged through the gap of the cone valve (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010126460.4A CN111102155B (en) | 2020-02-28 | 2020-02-28 | Reciprocating linear double-cylinder hydraulic pump |
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| CN202010126460.4A CN111102155B (en) | 2020-02-28 | 2020-02-28 | Reciprocating linear double-cylinder hydraulic pump |
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| CN111102155A CN111102155A (en) | 2020-05-05 |
| CN111102155B true CN111102155B (en) | 2021-07-02 |
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| CN202010126460.4A Active CN111102155B (en) | 2020-02-28 | 2020-02-28 | Reciprocating linear double-cylinder hydraulic pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023199306A1 (en) * | 2022-04-13 | 2023-10-19 | Ree Automotive Ltd. | Hydraulic pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04209978A (en) * | 1990-12-07 | 1992-07-31 | Daikin Ind Ltd | Linear motor compressor |
| JP2003003966A (en) * | 2001-06-20 | 2003-01-08 | Mitsuharu Umagami | High pressure generating device |
| JP2008002291A (en) * | 2006-06-20 | 2008-01-10 | Sumitomo Heavy Ind Ltd | Compressor and refrigerator having the compressor |
| CN101240793A (en) * | 2008-03-14 | 2008-08-13 | 刘新春 | Linear motor double cylinder compression pump |
| CN108757381A (en) * | 2018-05-31 | 2018-11-06 | 上海朗旦制冷技术有限公司 | A kind of double cylinder opposed type oil-free linear compressor |
-
2020
- 2020-02-28 CN CN202010126460.4A patent/CN111102155B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04209978A (en) * | 1990-12-07 | 1992-07-31 | Daikin Ind Ltd | Linear motor compressor |
| JP2003003966A (en) * | 2001-06-20 | 2003-01-08 | Mitsuharu Umagami | High pressure generating device |
| JP2008002291A (en) * | 2006-06-20 | 2008-01-10 | Sumitomo Heavy Ind Ltd | Compressor and refrigerator having the compressor |
| CN101240793A (en) * | 2008-03-14 | 2008-08-13 | 刘新春 | Linear motor double cylinder compression pump |
| CN108757381A (en) * | 2018-05-31 | 2018-11-06 | 上海朗旦制冷技术有限公司 | A kind of double cylinder opposed type oil-free linear compressor |
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| CN111102155A (en) | 2020-05-05 |
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