CN113236556A - Gear type pressure regulating oil pump with harmonic molded lines - Google Patents
Gear type pressure regulating oil pump with harmonic molded lines Download PDFInfo
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- CN113236556A CN113236556A CN202110445148.6A CN202110445148A CN113236556A CN 113236556 A CN113236556 A CN 113236556A CN 202110445148 A CN202110445148 A CN 202110445148A CN 113236556 A CN113236556 A CN 113236556A
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- pressure
- gear
- rotor
- pressure regulating
- driving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to the technical field of gear pumps, in particular to a gear type pressure regulating oil pump with harmonic wave molded lines, which comprises a pump shell, a pressure regulating rotor and a driving rotor, wherein the pressure regulating rotor and the driving rotor are arranged in a rotor cavity in the pump shell in parallel; the pump shell is provided with the pressure increasing port, the pressure releasing port and the constant pressure releasing port, the pressure adjusting rotor and the driving rotor are provided with the pressure increasing gear, the blocking roller and the pressure releasing gear, and the pressure adjusting rotor and the driving rotor can realize constant-pressure increasing, variable-pressure increasing, instant pressure releasing, variable pressure releasing and constant-pressure releasing under the condition of not changing the rotating speed of the rotors, so that the application range of the gear pump in an oil pump is greatly enlarged, and the pressure adjusting control in a hydraulic system is facilitated.
Description
Technical Field
The invention relates to the technical field of gear pumps, in particular to a gear type pressure regulating oil pump with harmonic molded lines.
Background
Gear pumps are rotary pumps that deliver or pressurize fluid by virtue of the change in working volume and movement created between a pump cylinder and a meshing gear. Two gears, pump body and front and back covers form two closed spaces, when the gears rotate, the space on the gear disengagement side becomes larger from smaller to larger to form vacuum to suck liquid, and the space on the gear engagement side becomes smaller from larger to smaller to squeeze liquid into the pipeline. The suction chamber and the discharge chamber are separated by a meshing line of two gears.
The gear pump has the advantages of simple structure, low manufacturing cost, strong self-priming capability and strong oil pollution resistance, is commonly used as a power device in a hydraulic system, is particularly widely applied to a low-pressure system, is a constant displacement pump at present, and has the limitation of the rotating speed and the limited rotating speed change speed due to the existence of oil in the gear, so that the pressure regulating capability of the gear pump is limited.
Disclosure of Invention
The invention aims to provide a gear type pressure regulating oil pump with harmonic wave molded lines, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: gear formula pressure regulating oil pump of harmonic molded lines, including pump case, pressure regulating rotor and drive rotor arrange parallelly in rotor chamber in the pump case, pressure regulating rotor and drive rotor homogeneous phase for the pump case rotates to be connected, drive rotor is connected with actuating mechanism, the one end of pump case is equipped with and is used for the drive the pressure regulating part of pressure regulating rotor displacement in the axial, pressure regulating rotor and drive rotor meshing are connected.
Drive rotor and motor are connected, the motor drives drive rotor and rotates, drive rotor and pressure regulating rotor intermeshing, make the pressure regulating rotor of rotor intracavity all take place to rotate with driving rotor through the rotor chamber, produce the impetus to the fluid through the rotor chamber, and through the displacement of pressure regulating part control pressure regulating rotor in axial direction for driving rotor, just can make the relative meshing space between pressure regulating rotor and the drive rotor change, and then can control the pressure of pump oil, realize carrying out controllable pressure regulating under the condition that does not change the rotational speed.
Further, all include a pressure boost gear, three separation roller and a pressure release gear in pressure regulating rotor and the drive rotor, the pressure regulating rotor still includes a penetration the pressure regulating optical axis of pressure boost gear, separation roller, pressure release gear, the drive rotor still includes a penetration the drive optical axis of pressure boost gear, separation roller, pressure release gear, the both sides of pressure boost gear and the both sides of pressure release gear all are equipped with the separation roller, just the laminating of separation roller is in the inner wall in rotor chamber, the pressure regulating optical axis is kept away from the one end of pressure regulating part is equipped with movable chamber, the pressure regulating optical axis rotates to be connected the inner wall in movable chamber.
Pressure regulating optical axis and the parallel arrangement of drive optical axis, and rotate and connect in the rotor chamber, the pressure regulating optical axis not only rotates for movable chamber and connects, can also carry out axial slip in movable chamber, when pressure regulating part control pressure regulating optical axis carries out axial slip in movable chamber, when carrying out axial slip, relative axial interlock can take place for the last pressure boost gear of pressure regulating optical axis and the last pressure boost gear of drive optical axis, the space of its meshing just so reduces or has enlarged, and the part that does not mesh fills up at axial space through the separation roller, just so can guarantee that meshing part has better leakproofness, consequently, can guarantee reliable pressure transmissibility.
Further, both ends of the teeth of the booster gear and the separation roller in the axial direction are provided with inclined planes extending from the edges to the tooth roots, the edges of the inclined planes are provided with round corners, and the inclined planes are smaller than forty-five degrees relative to the inclination angle of the axis.
Through such setting up can be so that when pressure regulating optical axis and drive optical axis take place relative slip in the axial, can be fine take place the transition with the separation roller, make separation roller and the laminating of the tooth's of pressure intensifier gear tooth groove, make the leakproofness between pressure intensifier gear and the separation roller better when having protected the separation roller like this for the transmission of fluid is more reliable.
Furthermore, the separation roller comprises a positioning rib, a deformation layer and a compact layer, the positioning rib is fixed on the outer wall of the pressure regulating optical axis or the driving optical axis, the deformation layer is located between the compact layer and the deformation layer, the compact layer comprises a metal net layer and a nylon composite layer, the metal net layer comprises a plurality of metal rings arranged along the circumferential direction and a supporting net layer of an inner layer, the supporting net layer is embedded on the surface of the nylon composite layer, and the deformation layer is high-density sponge.
In order to increase the wholeness of separation roller, be difficult to take place to warp, set up the location muscle on the outer wall of pressure regulating optical axis and drive optical axis, utilize the location muscle to drag and fix a position deformation layer, make the wholeness of separation roller higher, and utilize the compact layer can play better abrasive action, and prevent the infiltration of fluid, further improvement leakproofness, during metal mesh layer and ferrule and pressure boost gear or pressure release gear tooth contact, fine wearability has been played, improve the life of separation roller.
Further, it is three the separation roller divide into two pressure boost gear separation portions and a pressure release gear separation portion, two pressure boost gear separation portion is located pressure boost gear's both sides terminal surface, pressure release gear separation portion are located the pressure release gear is kept away from a side end face of pressure boost gear, two between the pressure boost gear separation portion with pressure boost gear forms the pressure boost cavity, form level pressure release cavity between pressure boost gear separation portion, pressure release gear separation portion and the pressure release gear, pressure boost gear separation portion is kept away from one side of pressure boost gear with form the pressure release cavity between the rotor cavity.
The pressure-increasing gear separation part and the pressure-releasing gear separation part are separated into three independent spaces in a rotor cavity, namely a pressure-increasing chamber with a pressure-increasing gear, a constant-pressure-releasing chamber with a pressure-releasing gear and a pressure-releasing chamber with a pressure-adjusting optical axis and a driving optical axis, an oil inlet channel and an oil outlet channel are independently arranged in each independent chamber, the oil inlet channels and the oil outlet channels can be controlled according to different requirements and realized through different channels, and the rotating speed and the direction of the gear do not need to be changed in the process.
Further, the pressure release chamber is the pressure release passageway, one side of pressure release passageway is equipped with the pressure release entry, the opposite side of pressure release passageway is equipped with the pressure release export, the pressure boost chamber includes a plurality of fluid chamber, works as the pressure boost gear with when the separation roller produces the ascending relative displacement of axial, the volume change in fluid chamber, be equipped with on the pump case with pressure boost entry and the pressure boost export of pressure release chamber intercommunication.
When the pressure in the system is too high and needs to be quickly relieved, a liquid supply pipeline of the system is switched to a pressure relief inlet by using a valve, the valve can be switched to be matched by using an electromagnetic valve and a pressure feedback part, automatic control is realized, and after the pressure relief inlet is switched, because no power output element exists in a pressure relief channel, oil liquid does not have resistance and flows to a pressure relief outlet from the pressure relief inlet, and instantaneous pressure relief is realized.
Further, level pressure release cavity includes a plurality of pressure release chamber, works as the pressure release gear with when separation roller produced the ascending relative displacement of axial, the volume change in pressure release chamber, be equipped with level pressure release entry and level pressure release export on the pump case, level pressure release entry through first ARC passageway with pressure release gear negative pressure department is connected, level pressure release export through second ARC passageway with pressure release gear positive pressure department is connected.
When the pressure relief is carried out at the constant pressure, the valve control assembly is used for connecting the system with the pressure relief inlet at the constant pressure, pressure relief oil enters the gear negative pressure position of the pressure relief gear through the first arc-shaped channel, is discharged from the gear positive pressure position of the pressure relief gear at fixed flow, flows to the pressure relief outlet at the constant pressure through the second arc-shaped channel, the pressure relief at the constant pressure is realized, and meanwhile, the pressure regulating part is used for controlling the axial displacement of the pressure relief gear, so that the pressure relief size can be controlled.
Further, the pressure regulating part includes bearing and linear actuating mechanism, the one end of pressure regulating optical axis pass through the bearing with the pump case rotates to be connected, linear actuating mechanism is used for the drive the bearing for the pump case is followed the axial direction of pressure regulating optical axis produces the displacement, the activity intracavity is equipped with the elastic component.
Utilize linear actuating mechanism to make drive bearing carry out axial displacement in the pump case to control the pressure regulating optical axis and still can carry out axial removal in the pivoted, and for the convenience of realizing the answer of position, be equipped with the elastic component in the activity chamber, make the pressure regulating optical axis can automatic re-setting when not the pressurized, the elastic component is the spring that has the bearing.
Further, the linear driving mechanism is a pneumatic mechanism, a hydraulic mechanism, an electromagnetic mechanism or a cam mechanism.
The bearing can be controlled by a pneumatic mechanism, such as a small air cylinder, a hydraulic mechanism, such as a small hydraulic cylinder, an electromagnetic mechanism or a cam mechanism and the like, and the bearing can axially move in the pump shell.
Further, the pressure relief inlet, the pressure boost inlet and the constant pressure relief inlet are connected with the input of the system through a four-way valve, and the pressure relief outlet, the pressure boost outlet and the constant pressure relief outlet are connected with the output of the system through a four-way valve.
The four-way valve is an electromagnetic valve, the electromagnetic valve is controlled by an electric signal, and the oil pump is adjusted to reach different pressure regulating states according to actual needs.
Compared with the prior art, the invention has the following beneficial effects:
the pump shell is provided with the pressure increasing port, the pressure releasing port and the constant pressure releasing port, the pressure adjusting rotor and the driving rotor are provided with the pressure increasing gear, the blocking roller and the pressure releasing gear, and the pressure adjusting rotor and the driving rotor can realize constant-pressure increasing, variable-pressure increasing, instant pressure releasing, variable pressure releasing and constant-pressure releasing under the condition of not changing the rotating speed of the rotors, so that the application range of the gear pump in an oil pump is greatly enlarged, and the pressure adjusting control in a hydraulic system is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the voltage regulation state of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 5 is a schematic cross-sectional view at C-C of FIG. 1;
FIG. 6 is a schematic cross-sectional view taken at D-D in FIG. 1;
FIG. 7 is a schematic cross-sectional view taken at E-E in FIG. 2;
in the figure: 1. a pump housing; 101. a rotor cavity; 102. a movable cavity; 111. a pressure relief inlet; 112. a pressure relief channel; 113. a pressure relief outlet; 121. a pressurized inlet; 122. an oil liquid chamber; 123. a pressurized outlet; 131. a constant pressure relief inlet; 132. a first arcuate channel; 133. a gear negative pressure position; 134. a positive pressure position of the gear; 135. a second arcuate channel; 136. a constant pressure relief outlet; 2. a pressure regulating rotor; 21. adjusting the voltage of the optical axis; 3. a drive rotor; 31. driving the optical axis; 4. a booster gear; 5. a barrier roller; 501. positioning ribs; 502. a deformation layer; 503. a dense layer; 51. a booster gear blocking section; 52. a pressure relief gear blocking portion; 6. a pressure relief gear; 601. a pressure relief cavity; 7. a pressure regulating member; 71. a bearing; 72. a linear drive mechanism.
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 by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides the following technical solutions: the gear type pressure regulating oil pump with the harmonic wave profile comprises a pump shell 1, a pressure regulating rotor 2 and a driving rotor 3, wherein the pressure regulating rotor 2 and the driving rotor 3 are arranged in a rotor cavity 101 in the pump shell 1 in parallel, the pressure regulating rotor 2 and the driving rotor 3 are connected in a rotating mode relative to the pump shell 1, the driving rotor 3 is connected with a driving mechanism, a pressure regulating part 7 used for driving the pressure regulating rotor 2 to move in the axial direction is arranged at one end of the pump shell 1, and the pressure regulating rotor 2 and the driving rotor 3 are connected in a meshed mode.
Drive rotor 3 and motor are connected, the motor drives drive rotor 3 and rotates, drive rotor 3 and the 2 intermeshing of pressure regulating rotor, make pressure regulating rotor 2 in the rotor chamber 101 all take place to rotate with driving rotor 3 through the rotor chamber, produce the impetus to the fluid through rotor chamber 101, and through the displacement of pressure regulating part 7 control pressure regulating rotor 2 for drive rotor 3 on the axial direction, just can make the relative meshing space between pressure regulating rotor 2 and the drive rotor 3 change, and then can control the pressure of pump oil, realize carrying out controllable pressure regulating under the condition that does not change the rotational speed.
Specifically, as shown in fig. 1-2, all include a pressure boost gear 4 in pressure regulating rotor 2 and the drive rotor 3, three separation roller 5 and a pressure release gear 6, pressure regulating rotor 2 still includes one and passes pressure boost gear 4, separation roller 5, pressure regulating gear 6's pressure regulating optical axis 21, drive rotor 3 still includes one and passes pressure boost gear 4, separation roller 5, pressure release gear 6's drive optical axis 31, pressure boost gear 4's both sides and pressure release gear 6's both sides all are equipped with separation roller 5, and separation roller 5 laminates the inner wall at rotor chamber 101, the one end that pressure regulating part 7 was kept away from to pressure regulating optical axis 21 is equipped with movable chamber 102, pressure regulating optical axis 21 rotates the inner wall of connecting at movable chamber 102.
The pressure regulating optical axis 21 and the driving optical axis 31 are arranged in parallel and are rotatably connected in the rotor cavity 101, the pressure regulating optical axis 21 is rotatably connected relative to the movable cavity 102 and can axially slide in the movable cavity 102, when the pressure regulating part 7 controls the pressure regulating optical axis 21 to axially slide in the movable cavity 102, when the pressure regulating part axially slides, the pressurizing gear 4 on the pressure regulating optical axis 21 and the pressurizing gear 4 on the driving optical axis 31 can be axially staggered relatively, so that the meshed space is reduced or enlarged, and the part which is not meshed is filled in the axial space through the blocking roller 5, so that the meshed part can be ensured to have better sealing property, and reliable pressure transmission can be ensured.
Specifically, the two ends of the teeth of the booster gear 4 and the baffle roller 5 in the axial direction are provided with inclined planes extending from the edges to the tooth roots, the edges of the inclined planes are provided with round corners, and the inclined angles of the inclined planes relative to the axis are smaller than forty-five degrees.
Through such setting up can be so that when pressure regulating optical axis 21 and drive optical axis 31 take place relative slip in the axial, can be fine take place the transition with separation roller 5, make separation roller 5 and 4 tooth's socket laminate, make the leakproofness between 4 and the separation roller 5 of pressure boost gear better when having protected separation roller 5 like this for the transmission of fluid is more reliable.
Specifically, as shown in fig. 4, the blocking roller 5 includes a positioning rib 501, a deformation layer 502 and a dense layer 503, the positioning rib 501 is fixed on the outer wall of the pressure-regulating optical axis 21 or the driving optical axis 31, the deformation layer 502 is located between the dense layer 503 and the deformation layer 502, the dense layer 503 includes a metal mesh layer and a nylon composite layer, the metal mesh layer includes a plurality of metal rings arranged along the circumferential direction and a support mesh layer of an inner layer, the support mesh layer is embedded on the surface of the nylon composite layer, and the deformation layer 502 is a high-density sponge.
In order to increase separation roller 5's wholeness, be difficult to take place to warp, set up location muscle 501 on pressure regulating optical axis 21 and drive optical axis 31's outer wall, utilize location muscle 501 to involve and fix a position deformation layer 502, make separation roller 5's wholeness higher, and utilize compact layer 503 to play better abrasive action, and prevent the infiltration of fluid, further improvement leakproofness, when metal mesh layer and metal ring and pressure boost gear 4 or pressure release gear 6's tooth contact, fine wearability has been played, improve separation roller 5's life.
Specifically, as shown in fig. 1-7, three separation roller 5 is divided into two pressure boost gear separation portions 51 and one pressure relief gear separation portion 52, two pressure boost gear separation portions 51 are located the both sides terminal surface of pressure boost gear 4, and pressure relief gear separation portion 52 is located one side terminal surface that pressure boost gear 4 was kept away from to pressure relief gear 6 forms pressure boost chamber with pressure boost gear 4 between two pressure boost gear separation portions 51, forms level pressure relief chamber between pressure boost gear separation portion 51, pressure relief gear separation portion 52 and the pressure relief gear 6, forms pressure relief chamber between one side that pressure boost gear 4 was kept away from to pressure boost gear separation portion 51 and rotor chamber 101.
The rotor cavity 101 is divided into three independent spaces by the pressure increasing gear blocking portion 51 and the pressure releasing gear blocking portion 52, namely a pressure increasing chamber with the pressure increasing gear 4, a constant pressure releasing chamber with the pressure releasing gear 6 and a pressure releasing chamber with the pressure adjusting optical axis 21 and the driving optical axis 31, an oil inlet channel and an oil outlet channel are independently arranged in each independent chamber, the oil inlet channel and the oil outlet channel can be controlled according to different requirements and realized through different channels, and the rotating speed and the direction of the gear do not need to be changed in the process.
Specifically, as shown in fig. 3, the pressure relief chamber is a pressure relief channel 112, a pressure relief inlet 111 is arranged on one side of the pressure relief channel 112, a pressure relief outlet 113 is arranged on the other side of the pressure relief channel 112, the pressurizing chamber includes a plurality of oil chambers 122, when the pressurizing gear 4 and the separation roller 5 generate axial relative displacement, the volume of the oil chambers 122 changes, and a pressurizing inlet 121 and a pressurizing outlet 123 which are communicated with the pressure relief chamber are arranged on the pump case 1.
When the pressure in the system is too high and needs to be quickly relieved, a liquid supply pipeline of the system is switched to the pressure relief inlet 111 through a valve, the switching of the valve can be matched through an electromagnetic valve and a pressure feedback component, automatic control is achieved, after the pressure relief inlet 111 is switched, because no power output element exists in the pressure relief channel 112, oil liquid flows from the pressure relief inlet 111 to the pressure relief outlet 113 without resistance, and instant pressure relief is achieved.
Specifically, as shown in fig. 6, the constant-pressure relief chamber includes a plurality of pressure relief cavities 601, when the pressure relief gear 6 and the separation roller 5 generate relative axial displacement, the volume of the pressure relief cavities 601 changes, the pump housing 1 is provided with a constant-pressure relief inlet 131 and a constant-pressure relief outlet 136, the constant-pressure relief inlet 131 is connected with the gear negative pressure part 133 of the pressure relief gear 6 through the first arc-shaped channel 132, and the constant-pressure relief outlet 136 is connected with the gear positive pressure part 134 of the pressure relief gear 6 through the second arc-shaped channel 135.
When pressure relief at constant pressure is needed, the valve control assembly is used for connecting the system with the pressure relief inlet 131 at constant pressure, pressure relief oil enters the gear negative pressure part 133 of the pressure relief gear 6 through the first arc-shaped channel 132, is discharged to the gear positive pressure part 13 of the pressure relief gear 6 at fixed flow, and flows to the pressure relief outlet 136 at constant pressure through the second arc-shaped channel 135, pressure relief at constant pressure is achieved, and meanwhile, the pressure regulating part 7 is used for controlling the axial displacement of the pressure relief gear 6, so that the pressure relief size can be controlled.
Specifically, the pressure regulating part 7 includes a bearing 71 and a linear driving mechanism 72, one end of the pressure regulating optical axis 21 is rotatably connected with the pump case 1 through the bearing 71, the linear driving mechanism 72 is used for driving the bearing 71 to displace along the axial direction of the pressure regulating optical axis 21 relative to the pump case 1, and an elastic part is arranged in the movable cavity 102.
The linear driving mechanism 72 can make the driving bearing 71 move axially in the pump housing 1, so as to control the pressure regulating optical axis 21 to rotate and move axially, and in order to realize the position return, an elastic part is arranged in the movable cavity 102, so that the pressure regulating optical axis 21 can automatically reset when not pressed, and the elastic part is a spring with a bearing.
Specifically, the linear driving mechanism 72 is a pneumatic mechanism, a hydraulic mechanism, an electromagnetic mechanism, or a cam mechanism.
The components that allow the bearing 71 to be controlled for axial movement within the pump housing 1 may be provided by pneumatic means, such as small pneumatic cylinders, hydraulic means, such as small hydraulic cylinders, as well as electromagnetic means or cam means, etc.
Specifically, the pressure relief inlet 111, the pressure boost inlet 121, and the constant pressure relief inlet 131 are connected to the system input through a four-way valve, and the pressure relief outlet 113, the pressure boost outlet 123, and the constant pressure relief outlet 136 are connected to the system output through a four-way valve.
The four-way valve is an electromagnetic valve, the electromagnetic valve is controlled by an electric signal, and the oil pump is adjusted to reach different pressure regulating states according to actual needs.
The working principle of the invention is as follows: the driving rotor 3 is connected with the motor, the motor drives the driving rotor 3 to rotate, the driving rotor 3 is meshed with the pressure regulating rotor 2, so that the pressure regulating rotor 2 in the rotor cavity 101 and the driving rotor 3 passing through the rotor cavity rotate, the oil passing through the rotor cavity 101 is pushed, the pressure regulating rotor 2 is controlled to move in the axial direction relative to the driving rotor 3 through the pressure regulating part 7, the relative meshing space between the pressure regulating rotor 2 and the driving rotor 3 can be changed, the pressure of the pumped oil can be controlled, controllable pressure regulation can be realized under the condition of not changing the rotating speed, the pressure regulating optical axis 21 and the driving optical axis 31 are arranged in parallel and are rotatably connected in the rotor cavity 101, the pressure regulating optical axis 21 is not only rotatably connected relative to the movable cavity 102, but also can axially slide in the movable cavity 102, when the pressure regulating part 7 controls the pressure regulating optical axis 21 to axially slide in the movable cavity 102, when the axial sliding is carried out, the pressurizing gear 4 on the pressure regulating optical axis 21 and the pressurizing gear 4 on the driving optical axis 31 are staggered in the opposite axial direction, so that the meshed space is reduced or enlarged, and the non-meshed part is filled in the axial space through the blocking roller 5, so that the meshed part has better sealing performance, and reliable pressure transmission performance can be ensured, the pressurizing gear blocking part 51 and the pressure releasing gear blocking part 52 are divided into three independent spaces in the rotor cavity 101, namely a pressurizing chamber with the pressurizing gear 4, a constant pressure releasing chamber with the pressure releasing gear 6 and a pressure releasing chamber with the pressure regulating optical axis 21 and the driving optical axis 31, an oil inlet channel and an oil outlet channel are independently arranged in each independent chamber, the oil inlet channel and the oil outlet channel can be controlled according to different requirements through different channels, and the rotating speed and the direction of the gears do not need to be changed in the process, when the pressure in the system is too high and needs to be quickly relieved, a liquid supply pipeline of the system is switched into a pressure relief inlet 111 by using a valve, the switching of the valve can be matched by using an electromagnetic valve and a pressure feedback part to realize automatic control, after the pressure relief inlet 111 is switched, because no power output element exists in a pressure relief channel 112, oil flows from the pressure relief inlet 111 to a pressure relief outlet 113 without resistance to realize instantaneous pressure relief, when the pressure is required to be relieved at constant pressure, the system is connected with a pressure relief inlet 131 at constant pressure by using a valve control assembly, the pressure relief oil enters a gear negative pressure part 133 of a pressure relief gear 6 through a first arc-shaped channel 132 to be discharged to a gear positive pressure part 13 of the pressure relief gear 6 at a fixed flow rate and flows to a pressure relief outlet 136 at constant pressure through a second arc-shaped channel 135 to realize the pressure relief at the constant pressure, and simultaneously, the pressure regulating part 7 is used for controlling the axial displacement of the pressure relief gear 6, the pressure relief can be controlled.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The gear type pressure regulating oil pump with the harmonic line is characterized by comprising a pump shell (1), a pressure regulating rotor (2) and a driving rotor (3), wherein the pressure regulating rotor (2) and the driving rotor (3) are arranged in parallel in a rotor cavity (101) in the pump shell (1), the pressure regulating rotor (2) and the driving rotor (3) are both connected in a rotating mode relative to the pump shell (1), the driving rotor (3) is connected with a driving mechanism, one end of the pump shell (1) is provided with a pressure regulating part (7) used for driving the pressure regulating rotor (2) to move in the axial direction, and the pressure regulating rotor (2) and the driving rotor (3) are connected in a meshing mode;
the pressure regulating rotor (2) and the driving rotor (3) respectively comprise a pressure increasing gear (4), three separation rollers (5) and a pressure releasing gear (6), the pressure regulating rotor (2) also comprises a pressure regulating optical axis (21) which passes through the pressure increasing gear (4), the separation roller (5) and the pressure releasing gear (6), the driving rotor (3) also comprises a driving optical axis (31) which passes through the pressure increasing gear (4), the separation roller (5) and the pressure relief gear (6), the two sides of the pressure increasing gear (4) and the two sides of the pressure releasing gear (6) are both provided with the separation rollers (5), and the separation roller (5) is attached to the inner wall of the rotor cavity (101), a movable cavity (102) is arranged at one end of the pressure regulating optical axis (21) far away from the pressure regulating part (7), the pressure regulating optical axis (21) is rotatably connected to the inner wall of the movable cavity (102);
the two ends of the teeth of the booster gear (4) and the baffle roller (5) in the axial direction are provided with inclined planes extending from the edge to the tooth root, the edge of each inclined plane is provided with a fillet, and the inclined angle of each inclined plane relative to the axis is smaller than forty-five degrees;
three separation roller (5) divide into two pressure boost gear separation portion (51) and a pressure release gear separation portion (52), two pressure boost gear separation portion (51) are located the both sides terminal surface of pressure boost gear (4), pressure release gear separation portion (52) are located pressure release gear (6) are kept away from a side terminal surface of pressure boost gear (4), two between pressure boost gear separation portion (51) with pressure boost gear (4) form the pressure boost cavity, form level pressure release cavity between pressure boost gear separation portion (51), pressure release gear separation portion (52) and pressure release gear (6), pressure boost gear separation portion (51) are kept away from one side of pressure boost gear (4) with form the pressure release cavity between rotor chamber (101).
2. The harmonic-type geared pressure regulating oil pump according to claim 1, characterized in that: pressure regulating part (7) include bearing (71) and linear actuating mechanism (72), the one end of pressure regulating optical axis (21) pass through bearing (71) with pump case (1) rotates and connects, linear actuating mechanism (72) are used for the drive bearing (71) for pump case (1) is followed the axial direction of pressure regulating optical axis (21) produces the displacement, be equipped with the elastic component in activity chamber (102).
3. The harmonic-type geared pressure regulating oil pump according to claim 2, characterized in that: the linear driving mechanism (72) is a pneumatic mechanism, a hydraulic mechanism, an electromagnetic mechanism or a cam mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110445148.6A CN113236556B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010852712.1A CN112012924B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
| CN202110445148.6A CN113236556B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010852712.1A Division CN112012924B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
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| Publication Number | Publication Date |
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| CN113236556A true CN113236556A (en) | 2021-08-10 |
| CN113236556B CN113236556B (en) | 2022-04-19 |
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| CN202010852712.1A Active CN112012924B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
| CN202110445148.6A Active CN113236556B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
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| CN202010852712.1A Active CN112012924B (en) | 2020-08-22 | 2020-08-22 | Gear type pressure regulating oil pump with harmonic molded lines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4361440A1 (en) * | 2022-10-28 | 2024-05-01 | Rolls-Royce Deutschland Ltd & Co KG | Gear pump, drive device and controllable pitch propeller |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757105A (en) * | 2021-09-22 | 2021-12-07 | 浙江东歌机械设备有限公司 | High corrosion resistant composite material rotor pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112012924B (en) | 2021-06-08 |
| CN113236556B (en) | 2022-04-19 |
| CN112012924A (en) | 2020-12-01 |
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