CN111322217A - Double-acting electromagnetic direct-drive linear servo pump - Google Patents
Double-acting electromagnetic direct-drive linear servo pump Download PDFInfo
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- CN111322217A CN111322217A CN202010338261.XA CN202010338261A CN111322217A CN 111322217 A CN111322217 A CN 111322217A CN 202010338261 A CN202010338261 A CN 202010338261A CN 111322217 A CN111322217 A CN 111322217A
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- 239000007788 liquid Substances 0.000 claims abstract description 63
- 230000033001 locomotion Effects 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 7
- 230000004044 response Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
- 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
- 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
- F04B49/20—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 by changing the driving speed
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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
- F04B49/22—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 by means of valves
- F04B49/225—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 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
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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
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
Abstract
The invention relates to a double-acting electromagnetic direct-drive linear servo pump which comprises a displacement sensor, a connecting plate, an end cover, an outer yoke, an inner yoke, an actuator rotor, a hydraulic cylinder body, a piston, a driving one-way valve group and a permanent magnet array, and is characterized in that the outer yoke and the inner yoke are coaxially connected through the end cover, an air gap is formed between the outer yoke and the inner yoke, and the outer yoke is fixedly connected with the end cover, the hydraulic cylinder body and the displacement sensor to serve as a stator; the actuator rotor is integrated with the piston through a connecting plate to form an actuator; the active check valve group is arranged on the end face of the hydraulic cylinder body, the controller controls the motion of the actuator rotor in real time according to the displacement signal of the actuator rotor collected by the displacement sensor, and controls the active check valve group to be opened and closed simultaneously: the feed liquor valve is opened at working chamber volume increase in-process, goes out the liquid valve and opens at working chamber volume reduction in-process, and change initiative check valve setting changes the flow direction, adjusts the motion phase place and can promote efficiency. The invention realizes the bidirectional servo control of the linear pump with high response, high precision and high efficiency.
Description
Technical Field
The invention relates to the technical field of plunger pumps, in particular to an electromagnetic direct-drive plunger pump.
Background
The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like, and is widely applied to occasions with high pressure, large flow and flow needing to be regulated. The swash plate type plunger pump has high efficiency and good pressure resistance, can realize various variable functions, and is the mainstream plunger pump in the current market. However, the number of transmission components is large, the movement form is complex, and the further improvement of the performance is also limited.
With the development of a linear direct-drive technology, a linear motor is adopted to directly drive a piston of a plunger pump, so that a motion conversion mechanism from rotation to linear, such as a swash plate, is eliminated, and efficient direct drive is realized to become an important trend in the development of the plunger pump. However, the hydraulic cylinder of the hydraulic pump driven by the linear motor completes the pumping work of the pump under the reciprocating action of the linear motor, so as to realize the unidirectional transmission of fluid, and how to realize the bidirectional fluid transmission of the linear driving hydraulic pump becomes a technical difficulty. In addition, the passive one-way valve is widely applied to the hydraulic pump and is mature in technology, but the working efficiency of the hydraulic pump is further improved due to the delay of opening and closing.
According to the double-acting electromagnetic direct-drive linear servo pump, the linear motor rotor is adopted to directly drive the hydraulic cylinder piston to reciprocate, the liquid cavity of the pump is pumped under the flow distribution of the active one-way valve group, and meanwhile, the arrangement of the liquid outlet valve and the liquid inlet valve in the active one-way valve group is mutually exchanged, so that the change of the output flow direction of the linear hydraulic pump is realized; the motion phases of a liquid outlet valve and a liquid inlet valve in the active one-way valve group are adjusted to improve the output efficiency of the hydraulic pump; the electromagnetic direct-drive linear plunger pump is adopted to realize the bidirectional fluid servo control with high precision, quick response and high efficiency.
Disclosure of Invention
A double-acting electromagnetic direct-drive linear servo pump is designed, a linear motor rotor is adopted to directly drive a hydraulic cylinder piston to reciprocate, a pump liquid cavity is arranged under the flow distribution of an active one-way valve group to complete the pumping of liquid, and meanwhile, the arrangement of a liquid outlet valve and a liquid inlet valve in the active one-way valve group is mutually exchanged, so that the change of the output flow direction of a linear hydraulic pump is realized; the motion phases of a liquid outlet valve and a liquid inlet valve in the active one-way valve group are adjusted to improve the output efficiency of the hydraulic pump; the electromagnetic direct-drive linear plunger pump is adopted to realize the bidirectional fluid servo control with high precision, quick response and high efficiency.
The utility model provides a two effect electromagnetism directly drive straight line servo pump, includes displacement sensor (1), connecting plate (2), end cover (3), outer yoke (4), executor active cell (5), interior yoke (6), piston (7), hydraulic cylinder body (8), initiative check valve group (9) and permanent magnetism array (10), its characteristic includes: the outer yoke (4) and the inner yoke (6) are coaxially fixed through the end cover (3), and an air gap is formed between the outer yoke and the inner yoke; one end of an outer yoke (4) is fixedly connected with an end cover (3) and a fixed part of a displacement sensor (1), the other end of the outer yoke (4) is fixedly connected with a hydraulic cylinder body (8) to be used as a stator, and an inner cavity formed by the hydraulic cylinder body (8) and a piston (7) is a working cavity; the actuator rotor (5) is coaxially and fixedly connected with the piston (8) through the connecting plate (2), and the actuator rotor (5) and the piston (7) can reciprocate in an air gap and a working cavity to actuate the rotor; the active one-way valve group (9) is arranged on the end surface of the hydraulic cylinder body (8), and the active one-way valve group (9) is divided into a liquid inlet valve and a liquid outlet valve which respectively comprise a liquid inlet valve and a liquid outlet valve; the magnetic valve comprises a valve core (9.1), a movable iron core (9.2), a routing coil (9.3), a shell (9.4), a permanent magnetic ring (9.5) and a magnetic conductive ring (9.6). Is characterized in that: a cylindrical runner is axially arranged on the movable iron core (9.2), the valve core (9.1) is fixedly connected with the movable iron core (9.2) and can reciprocate in a cylindrical inner cavity formed by the permanent magnetic ring (9.5) and the magnetic conductive ring (9.6); two axial magnetizing permanent magnetic rings (9.5) with opposite magnetizing directions cling to two ends of the magnetic conductive ring (9.6), and the coil (9.3) is positioned in an annular cylindrical cavity formed by the inner cavity of the shell (9.4), the permanent magnetic rings (9.5) and the outer side of the magnetic conductive ring (9.6); the motion of the movable iron core (9.2) can be controlled by controlling the current of the primary coil (9.3); the active one-way valve group (9) is divided into a liquid inlet valve and a liquid outlet valve according to function setting, the liquid inlet valve is opened in the process of increasing the volume of the working cavity, and the liquid outlet valve is opened in the process of reducing the volume of the working cavity.
The actuator rotor (5) is of a moving coil type or a moving magnet type, and a Halbach permanent magnet array (10) is attached to a magnet yoke or the actuator rotor (5) to lift air gap magnetic flux density.
The active one-way valve group (9) comprises normally closed electromagnetic valves of which the liquid inlet valves and the liquid outlet valves are equal in number and not less than 1; the liquid outlet valve and the liquid inlet valve are arranged and exchanged with each other, so that the output flow direction of the linear servo pump is changed; the motion phase of the liquid outlet valve and the liquid inlet valve is adjusted to improve the output efficiency of the hydraulic pump.
The motion stroke of the movable iron core (9.2) and the valve core (9.1) in the active one-way valve group (9) is the distance from the position where the valve core (9.1) is contacted with the hydraulic cylinder body (8) to the contact of the movable iron core (9.2) and the shell (9.4).
The connecting plate (2), the end cover (3), the piston (7) and the hydraulic cylinder body are all made of magnetism isolating materials, and the outer yoke (4), the inner yoke (6), the movable iron core (9.2), the shell (9.4) and the magnetic conduction ring (9.6) are made of magnetic conduction materials.
The axis of the active one-way valve set (9) is parallel to the axis of the hydraulic cylinder body (8).
According to the double-acting electromagnetic direct-drive linear servo pump, the linear motor rotor is adopted to directly drive the hydraulic cylinder piston to reciprocate, the liquid cavity of the pump is pumped under the flow distribution of the active one-way valve group, and meanwhile, the arrangement of the liquid outlet valve and the liquid inlet valve in the active one-way valve group is mutually exchanged, so that the output flow direction of the linear hydraulic pump is changed; the motion phase of a liquid outlet valve and a liquid inlet valve in the active one-way valve group is adjusted to improve the output efficiency of the hydraulic pump; the electromagnetic direct-drive linear plunger pump is adopted to realize the bidirectional fluid servo control with high precision, quick response and high efficiency.
The double-acting electromagnetic direct-drive linear servo pump adopts the electromagnetic linear actuator as the driving unit, realizes volume servo control, and has short power transmission path, high efficiency and energy conservation; the Halbach permanent magnetic array is adopted to enhance the strength of a radial magnetic field in the air gap, so that the output force of the electromagnetic linear actuator is improved, and the dynamic performance of the hydraulic pump is improved.
According to the double-acting electromagnetic direct-drive linear servo pump, the current in the coil is controlled by the controller, the adjustment of the motion amplitude and the frequency of the electromagnetic linear actuator is realized through the control of the current, the accurate control of the output flow and the pressure of the hydraulic pump is further realized, and the precision of fluid control is improved.
According to the double-acting electromagnetic direct-drive linear servo pump, the arrangement of the liquid outlet valve and the arrangement of the liquid inlet valve in the active one-way valve group are mutually exchanged, so that the output flow direction of the linear hydraulic pump is changed, and the bidirectional flow distribution of the linear hydraulic pump is realized; the motion phase of the liquid outlet valve and the liquid inlet valve in the active one-way valve group is adjusted to further improve the output efficiency of the hydraulic pump.
The double-acting electromagnetic direct-drive linear servo pump has the advantages of compact structure, quick response, high control precision and the like, and brings huge economic benefits after being put into industrial application.
Drawings
Fig. 1 is a schematic structural diagram of a double-acting electromagnetic direct-drive linear servo pump according to the present invention.
FIG. 2 is a schematic diagram of a fluid flow direction of a double-acting electromagnetic direct-drive linear servo pump according to the present invention.
Fig. 3 is a schematic structural diagram of a double-acting electromagnetic direct-drive linear servo pump (an actuator rotor is of a moving coil type) according to the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, a double-acting electromagnetic direct-drive linear servo pump comprises a displacement sensor (1), a connecting plate (2), an end cover (3), an outer yoke (4), an actuator rotor (5), an inner yoke (6), a piston (7), a hydraulic cylinder body (8), a driving check valve set (9) and a permanent magnet array (10), and is characterized by comprising: the outer yoke (4) and the inner yoke (6) are coaxially fixed through the end cover (3), and an air gap is formed between the outer yoke and the inner yoke; one end of an outer yoke (4) is fixedly connected with an end cover (3) and a fixed part of a displacement sensor (1), the other end of the outer yoke (4) is fixedly connected with a hydraulic cylinder body (8) to be used as a stator, and an inner cavity formed by the hydraulic cylinder body (8) and a piston (7) is a working cavity; the actuator rotor (5) is coaxially and fixedly connected with the piston (8) through the connecting plate (2), and the actuator rotor (5) and the piston (7) can reciprocate in an air gap and a working cavity to actuate the rotor; the active one-way valve group (9) is arranged on the end surface of the hydraulic cylinder body (8), and the active one-way valve group (9) is divided into a liquid inlet valve and a liquid outlet valve which respectively comprise a liquid inlet valve and a liquid outlet valve; the magnetic valve comprises a valve core (9.1), a movable iron core (9.2), a routing coil (9.3), a shell (9.4), a permanent magnetic ring (9.5) and a magnetic conductive ring (9.6); is characterized in that: a cylindrical runner is axially arranged on the movable iron core (9.2), the valve core (9.1) is fixedly connected with the movable iron core (9.2) and can reciprocate in a cylindrical inner cavity formed by the permanent magnetic ring (9.5) and the magnetic conductive ring (9.6); two axial magnetizing permanent magnetic rings (9.5) with opposite magnetizing directions cling to two ends of the magnetic conductive ring (9.6), and the coil (9.3) is positioned in an annular cylindrical cavity formed by the inner cavity of the shell (9.4), the permanent magnetic rings (9.5) and the outer side of the magnetic conductive ring (9.6); the motion of the movable iron core (9.2) can be controlled by controlling the current of the primary coil (9.3); the active one-way valve group (9) is divided into a liquid inlet valve and a liquid outlet valve according to function setting, the liquid inlet valve is opened in the process of increasing the volume of the working cavity, and the liquid outlet valve is opened in the process of reducing the volume of the working cavity. Taking fig. 2 as an example: when the piston moves leftwards, the valve 9-a is opened (figure 2 (a), the volume of the working cavity is increased, fluid is sucked into the working cavity through the valve 9-a, when the piston moves rightwards, the valve 9-b is opened (figure 2 (b), the volume of the working cavity is reduced, fluid is pumped out of the working cavity through the valve 9-b, during the whole reciprocating motion process of the piston, the fluid is sucked through the valve 9-a and pumped out through the valve 9-b, and when the motion settings of the valve 9-a and the valve 9-b are mutually exchanged when the piston does not move, during the whole reciprocating motion process of the piston, the fluid is sucked through the valve 9-b and pumped out through the valve 9-a, namely the bidirectional fluid transmission of the linear direct drive pump is realized.
The actuator rotor (5) is of a moving coil type or a moving magnet type, and a Halbach permanent magnet array (10) is attached to a magnet yoke or the actuator rotor (5) to lift air gap magnetic flux density.
The active one-way valve group (9) comprises normally closed electromagnetic valves of which the liquid inlet valves and the liquid outlet valves are equal in number and not less than 1; the liquid outlet valve and the liquid inlet valve are arranged and exchanged with each other, so that the output flow direction of the linear servo pump is changed; the motion phase of the liquid outlet valve and the liquid inlet valve is adjusted to improve the output efficiency of the hydraulic pump.
The motion stroke of the movable iron core (9.2) and the valve core (9.1) in the active check valve group (9) is the distance from the position where the valve core (9.1) is contacted with the hydraulic cylinder body (8) to the contact of the movable iron core (9.2) and the shell (9.4).
The connecting plate (2), the end cover (3), the piston (7) and the hydraulic cylinder body are all made of magnetism isolating materials, and the outer yoke (4), the inner yoke (6), the movable iron core (9.2), the shell (9.4) and the magnetic conduction ring (9.6) are made of magnetic conduction materials.
The axis of the active one-way valve set (9) is parallel to the axis of the hydraulic cylinder body (8).
As an embodiment, as shown in fig. 3, when the actuator mover (5) is of a moving coil type, the actuator mover (5) includes a coil frame (5.2) and a coil frame (5.1), and the Halbach permanent magnet array (10) is formed by alternately and closely arranging axial magnetized permanent magnets and radial magnetized permanent magnets and is attached to the inner yoke (6).
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. The utility model provides a two effect electromagnetism directly drive straight line servo pump, includes displacement sensor (1), connecting plate (2), end cover (3), outer yoke (4), executor active cell (5), interior yoke (6), piston (7), hydraulic cylinder body (8), initiative check valve group (9) and permanent magnetism array (10), its characteristic includes: the outer yoke (4) and the inner yoke (6) are coaxially fixed through the end cover (3), and an air gap is formed between the outer yoke and the inner yoke; one end of an outer yoke (4) is fixedly connected with an end cover (3) and a fixed part of a displacement sensor (1), the other end of the outer yoke (4) is fixedly connected with a hydraulic cylinder body (8) to be used as a stator, and an inner cavity formed by the hydraulic cylinder body (8) and a piston (7) is a working cavity; the actuator rotor (5) is coaxially and fixedly connected with the piston (8) through the connecting plate (2), and the actuator rotor (5) and the piston (7) can reciprocate in an air gap and a working cavity to actuate the rotor; the active one-way valve group (9) is arranged on the end surface of the hydraulic cylinder body (8), and the active one-way valve group (9) is divided into a liquid inlet valve and a liquid outlet valve which respectively comprise a liquid inlet valve and a liquid outlet valve; the magnetic valve comprises a valve core (9.1), a movable iron core (9.2), a routing coil (9.3), a shell (9.4), a permanent magnetic ring (9.5) and a magnetic conductive ring (9.6); is characterized in that: a cylindrical runner is axially arranged on the movable iron core (9.2), the valve core (9.1) is fixedly connected with the movable iron core (9.2) and can reciprocate in a cylindrical inner cavity formed by the permanent magnetic ring (9.5) and the magnetic conductive ring (9.6); two axial magnetizing permanent magnetic rings (9.5) with opposite magnetizing directions cling to two ends of the magnetic conductive ring (9.6), and the coil (9.3) is positioned in an annular cylindrical cavity formed by the inner cavity of the shell (9.4), the permanent magnetic rings (9.5) and the outer side of the magnetic conductive ring (9.6); the motion of the movable iron core (9.2) can be controlled by controlling the current of the primary coil (9.3); the active one-way valve group (9) is divided into a liquid inlet valve and a liquid outlet valve according to function setting, the liquid inlet valve is opened in the process of increasing the volume of the working cavity, and the liquid outlet valve is opened in the process of reducing the volume of the working cavity.
2. A double-acting electromagnetic direct-drive linear servo pump as claimed in claim 1, wherein the actuator mover (5) is of a moving coil type or a moving magnet type, and a Halbach permanent magnet array (10) is attached to a magnet yoke or the actuator mover (5) to raise air gap magnetic density.
3. A double-acting electromagnetic direct-drive linear servo pump as claimed in claim 1, wherein the active one-way valve group (9) comprises normally closed electromagnetic valves having the same number of liquid inlet valves and liquid outlet valves not less than 1; the liquid outlet valve and the liquid inlet valve are arranged to be mutually exchanged, so that the output flow direction of the linear servo pump is changed; the motion phase of the liquid outlet valve and the liquid inlet valve is adjusted to improve the output efficiency of the hydraulic pump.
4. A double-acting electromagnetic direct-drive linear servo pump according to claim 1, characterized in that the moving stroke of the movable iron core (9.2) and the valve core (9.1) in the active check valve group (9) is the distance from the position where the valve core (9.1) contacts the hydraulic cylinder (8) to the contact of the movable iron core (9.2) and the housing (9.4).
5. A double-acting electromagnetic direct-drive linear servo pump according to claim 1, characterized in that the connecting plate (2), the end cap (3), the piston (7) and the hydraulic cylinder are all made of a magnetic isolation material, and the outer yoke (4), the inner yoke (6), the movable iron core (9.2), the housing (9.4) and the magnetic conductive ring (9.6) are made of a magnetic conductive material.
6. A double acting electromagnetic direct drive linear servo pump according to claim 1, characterized in that the axis of the active set of check valves (9) is parallel to the axis of the hydraulic cylinder (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338261.XA CN111322217B (en) | 2020-04-26 | 2020-04-26 | Double-acting electromagnetic direct-drive linear servo pump |
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| CN202010338261.XA CN111322217B (en) | 2020-04-26 | 2020-04-26 | Double-acting electromagnetic direct-drive linear servo pump |
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| CN111322217A true CN111322217A (en) | 2020-06-23 |
| CN111322217B CN111322217B (en) | 2024-02-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627990A (en) * | 2020-12-23 | 2021-04-09 | 华中科技大学 | Flow passage adjusting structure of direct-drive combined engine and control method thereof |
| CN112947612A (en) * | 2021-02-04 | 2021-06-11 | 中汽创智科技有限公司 | Pressure control device, brake system, and pressure control method |
| CN113685330A (en) * | 2021-09-15 | 2021-11-23 | 山东理工大学 | Double-module integrated type active flow distribution electromagnetic direct-drive servo pump |
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| CN212079537U (en) * | 2020-04-26 | 2020-12-04 | 山东理工大学 | Double-acting electromagnetic direct-drive linear servo pump |
Cited By (4)
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| CN112627990A (en) * | 2020-12-23 | 2021-04-09 | 华中科技大学 | Flow passage adjusting structure of direct-drive combined engine and control method thereof |
| CN112947612A (en) * | 2021-02-04 | 2021-06-11 | 中汽创智科技有限公司 | Pressure control device, brake system, and pressure control method |
| CN113685330A (en) * | 2021-09-15 | 2021-11-23 | 山东理工大学 | Double-module integrated type active flow distribution electromagnetic direct-drive servo pump |
| CN113685330B (en) * | 2021-09-15 | 2022-11-22 | 山东理工大学 | Double-module integrated type active flow distribution electromagnetic direct-drive servo pump |
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