CN113565757A - Multi-stage pressure discharge multi-output pump - Google Patents
Multi-stage pressure discharge multi-output pump Download PDFInfo
- Publication number
- CN113565757A CN113565757A CN202110745263.5A CN202110745263A CN113565757A CN 113565757 A CN113565757 A CN 113565757A CN 202110745263 A CN202110745263 A CN 202110745263A CN 113565757 A CN113565757 A CN 113565757A
- Authority
- CN
- China
- Prior art keywords
- oil
- output
- way
- valve
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C15/064—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 machines or pumps
Abstract
The invention discloses a multi-stage pressure-discharge multi-output pump which comprises a right pump body, an outer stator, an inner stator, a left pump body, a rotor, a pump shaft, a roller blade group, an electromagnetic directional valve, a two-way cartridge valve group and a cartridge overflow valve, wherein a plurality of independent output oil paths communicated with high-pressure oil areas in the inner stator and the outer stator are arranged in the right pump body, at least two output oil paths are arranged, the two-way cartridge valve group is arranged on the oil path of each output oil path, and the electromagnetic directional valve is arranged on the outer side of the two-way cartridge valve group; the output oil path controls the flow direction of oil in the oil path through the combination of the two-way cartridge valve group and the electromagnetic directional valve, the output oil path is communicated with the output port during output, the cartridge overflow valve used for adjusting the pressure of the oil is arranged outside the output port, and the output oil path is communicated with the oil inlet during non-output. The invention can realize multi-stage displacement adjustment and multi-stage pressure adjustment, and has the advantages of small volume, light weight, no throttling power loss and high variable response speed.
Description
Technical Field
The invention relates to the technical field of hydraulic transmission, in particular to a multi-stage pressure-discharge multi-output pump.
Background
The hydraulic transmission technology has been widely used with the advantages of high power density, large-range stepless speed regulation, overload protection, small motion inertia, fast response speed and the like. Under the working condition that the flow is required to be adjustable, flow adjusting methods such as throttling speed regulation, volume speed regulation, multi-pump source combined speed regulation and the like are generally available, but each existing speed regulating method has corresponding defects: the throttling speed regulation can generate throttling power loss, the response time of the variable mechanism is longer during the volume speed regulation, the multi-pump source combined speed regulation has high cost, large space occupation and more fault points.
Disclosure of Invention
The invention aims to solve the technical problem of providing a multi-stage pressure-discharge multi-output pump which can realize multi-stage discharge capacity adjustment and multi-stage pressure adjustment, has small volume, light weight, no throttling power loss and high variable response speed.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a multi-stage pressure discharge multi-output pump comprises a right pump body, an outer stator, an inner stator, a left pump body, a rotor, a pump shaft, a roller blade group, an electromagnetic directional valve, two-way cartridge valve groups and a cartridge overflow valve, wherein a plurality of independent output oil paths communicated with high-pressure oil areas in the inner stator and the outer stator are arranged in the right pump body, at least two output oil paths are arranged, the two-way cartridge valve groups are arranged on the oil paths of the output oil paths, and the electromagnetic directional valve is arranged on the outer side of each two-way cartridge valve group;
the output oil path controls the flow direction of oil in the oil path through the combination of the two-way cartridge valve group and the electromagnetic directional valve, the output oil path is communicated with the output port during output, the cartridge overflow valve used for adjusting the pressure of the oil is arranged outside the output port, and the output oil path is communicated with the oil inlet during non-output.
The technical scheme of the invention is further improved as follows: a cavity is formed between the right pump body and the left pump body in a surrounding mode, an inner stator is arranged in the cavity, a rotor is arranged on the periphery of the inner stator, a pump shaft extending outwards is arranged on the left side of the inner stator, a flat key is arranged between the pump shaft and the rotor, and roller blade sets are further arranged between the rotor and the inner walls of the upper side and the lower side of the cavity.
The technical scheme of the invention is further improved as follows: the output oil way comprises an output oil way I and an output oil way II, the output oil way I is communicated with a high-pressure oil area I in the outer stator, an inlet of the two-way valve set I is connected with the output oil way I, a left valve port and a right valve port of the two-way valve set I are respectively connected with an output port and an oil inlet II, and the oil inlet II is communicated with a low-pressure oil area II in the inner stator to pour oil back into the pump.
The technical scheme of the invention is further improved as follows: an output oil way II is communicated with a high-pressure oil area II in the inner stator, an inlet of a two-way cartridge valve group II is connected with the output oil way II, a left valve port and a right valve port of the two-way cartridge valve group II are respectively connected with an output port and an oil inlet I, and the oil inlet I is communicated with a low-pressure oil area I in the outer stator to pour oil back into the pump.
The technical scheme of the invention is further improved as follows: the number of the output ports is at least one, and the number of the output ports is not more than the number of the output oil paths.
The technical scheme of the invention is further improved as follows: the number of the output oil passages is not more than that of the high-pressure oil areas.
The technical scheme of the invention is further improved as follows: the quantity of the plug-in overflow valves is equal to that of the output ports.
The technical scheme of the invention is further improved as follows: the plug-in overflow valve is an electromagnetic proportional overflow valve or a multi-stage pressure regulating overflow valve.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the output ports can be one or a plurality of, each output port can realize multi-stage displacement adjustment and multi-stage pressure adjustment, the actuating elements can be driven to move in multiple speeds under the condition of no throttling loss, the synchronous movement of the actuating elements with different displacements directly driven by the pump can be realized when the output ports are multiple, and the pump has the advantages of small volume, light weight and high variable response speed.
The number of the output oil paths is at least two, the flow direction of oil liquid in the output oil paths is controlled through the combination of the electromagnetic directional valve and the two-way cartridge valve group, the output oil paths are communicated with the output port during output, the output oil paths are communicated with the oil inlet during non-output, the oil liquid flows back to adjust the output flow of the output pump, and the cartridge overflow valve is further arranged on the outer side of the output port, so that the pressure of the output oil liquid can be controlled, and the purpose of multi-stage pressure output is achieved.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view from another perspective of the present invention;
FIG. 3 is a schematic view of the oil flow path of the present invention;
FIG. 4 is a schematic diagram of the proportional pressure regulation control of the present invention;
the two-way plug-in valve group comprises a right pump body 1, a right pump body 2, output oil ways I and 3, a high-pressure oil area I and 4, an outer stator 5, a left pump body 6, a rotor 7, a pump shaft 8, a flat key 9, a low-pressure oil area II and 10, an output oil way II and 11, a high-pressure oil area II and 12, a roller blade group 13, a low-pressure oil area I and 14, an oil inlet I and 15, an output port 16, electromagnetic reversing valves II and 17, a two-way plug-in valve group II and 18, a plug-in overflow valve 19, a two-way plug-in valve group I and 20, an electromagnetic reversing valve I and 21, an oil inlet II and 22 and an inner stator.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1, a multi-stage pressure-discharge multi-output pump includes a right pump body 1, an outer stator 4, an inner stator 22, a left pump body 5, a rotor 6, a pump shaft 7, a roller blade group 12, an electromagnetic directional valve, two-way valve sets and a plug-in overflow valve 18, wherein a high-pressure oil area and a low-pressure oil area are provided in the outer stator 4, a plurality of independent output oil paths communicated with the high-pressure oil area in the inner stator 22 and the high-pressure oil area in the outer stator 4 are provided in the right pump body 1, at least two output oil paths are provided, the oil paths of the output oil paths are provided with the two-way valve sets, the two-way valve sets are used for adjusting the pressure of oil in the output oil paths, the electromagnetic directional valve is provided outside the two-way valve sets, and the electromagnetic directional valve is used for adjusting the flow direction of the oil in the output oil paths.
A cavity is formed between the right pump body 1 and the left pump body 5 in a surrounding manner, an inner stator 22 is arranged in the cavity, a rotor 6 is arranged on the periphery of the inner stator 22, a pump shaft 7 extending outwards is arranged on the left side of the inner stator 22, a flat key 8 is arranged between the pump shaft 7 and the rotor 6 so that the rotor 6 is driven by the pump shaft 7 to rotate, and roller blade groups 12 are further arranged between the rotor 6 and the inner walls of the upper side and the lower side of the cavity.
The output oil path controls the flow direction of oil in the oil path through the combination of the two-way cartridge valve group and the electromagnetic directional valve, and is communicated with the output port 15 when outputting, and is communicated with the oil inlet when not outputting; the outside of the output port 15 is provided with inserted overflow valves 18 for adjusting the oil hydraulic pressure, the inserted overflow valves 18 are electromagnetic proportional overflow valves or multi-stage pressure-adjusting overflow valves, and the number of the inserted overflow valves 18 is equal to that of the output port 15.
Specifically, the output oil way comprises an output oil way I2 and an output oil way II 10, the output oil way I2 is communicated with a high-pressure oil area I3 in the outer stator 4, an inlet of a two-way valve set I19 is connected with the output oil way I2, a left valve port and a right valve port of the two-way valve set I19 are respectively connected with an output port 15 and an oil inlet II 21, the flow direction of oil is controlled by a solenoid directional valve I20, when the output is performed, the output oil way I2 is controlled by the solenoid directional valve I20 to be connected with the output port 15, when the output is not performed, the output oil way I2 is controlled by the solenoid directional valve I20 to be connected with the oil inlet II 21, and the oil inlet II 21 is communicated with a low-pressure oil area II 9 in the inner stator 22 to return the oil into the pump;
the output oil way II 10 is communicated with a high-pressure oil area II 11 in the inner stator 22, the inlet of the two-way cartridge valve group II 17 is connected with the output oil way II 10, the left valve port and the right valve port of the two-way cartridge valve group II 17 are respectively connected with the output port 15 and the oil inlet I14, the flow direction of oil is controlled by the electromagnetic directional valve II 16, when the oil is output, the electromagnetic directional valve II 16 controls the output oil way II 10 to be connected with the output port 15, when the oil is not output, the electromagnetic directional valve II 16 controls the output oil way II 10 to be connected with the oil inlet I14, and the oil inlet I14 is communicated with a low-pressure oil area I13 in the outer stator 4 to return the oil into the pump.
The number of the output ports 15 is at least one, the number of the output ports 15 is not more than that of the output oil paths, and each output port 15 can be communicated with each output oil path through the control of the two-way cartridge valve group to realize the output of different flow rates; if the number of the output ports 15 is more than one, the number of the two-way valves in the two-way cartridge valve group is correspondingly increased, and the number of working positions of the electromagnetic directional valves is also correspondingly increased.
The working principle is as follows:
the prime motor drives the pump shaft 7 to rotate, the pump shaft 7 drives the rotor 6 to rotate through the flat key 8, so that the control volume is periodically changed, and oil is sucked and pressed; the pump is internally provided with a plurality of high-pressure oil areas, each high-pressure oil area is communicated with an independent output oil way, each output oil way controls the flow direction of oil through a two-way cartridge valve group, if the oil needs to be output outwards, the output oil way is communicated with an output port 15, and if the oil does not need to be output outwards, the output oil way is communicated with an oil inlet; the combination of a plurality of output oil paths can realize various output flows;
as shown in fig. 3, in the arrangement of the two-way cartridge valve group, inlets of all two-way valves in the valve group are communicated with the same output oil path, and the on-off of the two-way valves is controlled by the electromagnetic directional valve; the output port is provided with a plug-in overflow valve 18, when the pressure of the output oil reaches a set value, the oil overflows back to the oil inlet, as shown in fig. 4, the pressure value can be set by adopting a proportional overflow mode, or can be switched and set by two-stage or three-stage control, and through the control, the pump can realize multi-stage flow output and multi-stage pressure output.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides a multi-stage pressure discharge multi-output pump, includes right pump body (1), outer stator (4), inner stator (22), left pump body (5), rotor (6), pump shaft (7), roller blade group (12), solenoid directional valve, two-way cartridge valves, cartridge overflow valve (18), its characterized in that: a plurality of independent output oil paths communicated with the high-pressure oil areas in the outer stator (4) and the inner stator (22) are arranged in the right pump body (1), at least two output oil paths are arranged, a two-way cartridge valve group is arranged on the oil path of each output oil path, and an electromagnetic reversing valve is arranged on the outer side of each two-way cartridge valve group;
the output oil path controls the flow direction of oil in the oil path through the combination of the two-way cartridge valve group and the electromagnetic directional valve, the output oil path is communicated with an output port when outputting, a cartridge overflow valve (18) used for adjusting the pressure of the oil is arranged outside the output port, and the output oil path is communicated with an oil inlet when not outputting.
2. The pump of claim 1, wherein: a cavity is formed between the right pump body (1) and the left pump body (5), an inner stator (22) is arranged in the cavity, a rotor (6) is arranged on the periphery of the inner stator (22), a pump shaft (7) extending outwards is arranged on the left side of the inner stator (22), a flat key (8) is arranged between the pump shaft (7) and the rotor (6), and roller blade groups (12) are further arranged between the rotor (6) and the inner walls of the upper side and the lower side of the cavity.
3. The pump of claim 1, wherein: the output oil way comprises an output oil way I (2) and an output oil way II (10), the output oil way I (2) is communicated with a high-pressure oil area I (3) in the outer stator (4), an inlet of the two-way valve set I (19) is connected with the output oil way I (2), a left valve port and a right valve port of the two-way valve set I (19) are respectively connected with an output port (15) and an oil inlet II (21), and the oil inlet II (21) is communicated with a low-pressure oil area II (9) in the inner stator (22) to return oil into the pump.
4. A multi-stage pump according to claim 3, wherein: an output oil way II (10) is communicated with a high-pressure oil area II (11) in the inner stator (22), an inlet of a two-way cartridge valve group II (17) is connected with the output oil way II (10), a left valve port and a right valve port of the two-way cartridge valve group II (17) are respectively connected with an output port (15) and an oil inlet I (14), and the oil inlet I (14) is communicated with a low-pressure oil area I (13) in the outer stator (4) to pour oil back into the pump.
5. The pump of claim 1, wherein: the number of the output ports is at least one, and the number of the output ports is not more than the number of the output oil paths.
6. The pump of claim 1, wherein: the number of the output oil passages is not more than that of the high-pressure oil areas.
7. The pump of claim 1, wherein: the number of the inserted overflow valves (18) is equal to that of the output ports (15).
8. The pump of claim 1, wherein: the plug-in overflow valve (18) is an electromagnetic proportional overflow valve or a multi-stage pressure regulating overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110745263.5A CN113565757B (en) | 2021-07-01 | 2021-07-01 | Multi-stage pressure discharge multi-output pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110745263.5A CN113565757B (en) | 2021-07-01 | 2021-07-01 | Multi-stage pressure discharge multi-output pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113565757A true CN113565757A (en) | 2021-10-29 |
| CN113565757B CN113565757B (en) | 2022-04-19 |
Family
ID=78163338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110745263.5A Active CN113565757B (en) | 2021-07-01 | 2021-07-01 | Multi-stage pressure discharge multi-output pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113565757B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946605Y (en) * | 2006-08-16 | 2007-09-12 | 天津市天锻压力机有限公司 | Hydraulic integrated deadweight fast-descending valve |
| CN201080932Y (en) * | 2007-04-30 | 2008-07-02 | 江苏鼎晟液压有限公司 | Control valve assembly |
| CN201111563Y (en) * | 2007-09-27 | 2008-09-10 | 天津市天锻压力机有限公司 | Hydraulic integration liftout valve block |
| CN102536802A (en) * | 2011-12-29 | 2012-07-04 | 全兴精工集团有限公司 | Power steering pump |
| CN102691655A (en) * | 2012-06-08 | 2012-09-26 | 燕山大学 | Shaft rotation double-stator cam rotor multi-output pump |
| US20130039795A1 (en) * | 2010-03-29 | 2013-02-14 | Yan University | Shaft rotating double-stator multi-speed motor with curves of constant width |
| CN110821824A (en) * | 2019-11-22 | 2020-02-21 | 兰州理工大学 | Internal gear type hydraulic motor pump with integrated cartridge valve at outlet |
-
2021
- 2021-07-01 CN CN202110745263.5A patent/CN113565757B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946605Y (en) * | 2006-08-16 | 2007-09-12 | 天津市天锻压力机有限公司 | Hydraulic integrated deadweight fast-descending valve |
| CN201080932Y (en) * | 2007-04-30 | 2008-07-02 | 江苏鼎晟液压有限公司 | Control valve assembly |
| CN201111563Y (en) * | 2007-09-27 | 2008-09-10 | 天津市天锻压力机有限公司 | Hydraulic integration liftout valve block |
| US20130039795A1 (en) * | 2010-03-29 | 2013-02-14 | Yan University | Shaft rotating double-stator multi-speed motor with curves of constant width |
| CN102536802A (en) * | 2011-12-29 | 2012-07-04 | 全兴精工集团有限公司 | Power steering pump |
| CN102691655A (en) * | 2012-06-08 | 2012-09-26 | 燕山大学 | Shaft rotation double-stator cam rotor multi-output pump |
| CN110821824A (en) * | 2019-11-22 | 2020-02-21 | 兰州理工大学 | Internal gear type hydraulic motor pump with integrated cartridge valve at outlet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113565757B (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI20010827A (en) | Control system and method for controlling an actuator and for optimizing control by means of parallel connected valve series | |
| US5293745A (en) | Fluid power regenerator | |
| CN113246938B (en) | Retarder braking torque pressure control system and method | |
| CN115898748B (en) | Radial plunger hydraulic device for controlling double-valve flow distribution by using single-group oil way and working method | |
| CN101482088B (en) | Flow distributor of axial plunger variable hydraulic motor | |
| CN113565757B (en) | Multi-stage pressure discharge multi-output pump | |
| CN105545839A (en) | Oil cylinder reversing and volume speed adjusting hydraulic system | |
| CN102582054A (en) | Power system of large-sized servo injection molding machine | |
| JP2007506048A (en) | Hydraulic control and adjustment system with volume equalization | |
| CA1056693A (en) | Load responsive fluid control system | |
| CN108533556B (en) | Oil supplementing switching valve for switching closed system and open system and control system | |
| JP4936984B2 (en) | Hydraulic circuit | |
| JPS598683B2 (en) | Pressurized fluid supply device | |
| JPS6240559B2 (en) | ||
| CN111980978B (en) | Torque control hydraulic system based on push-pull speed of power head | |
| JP7200385B2 (en) | Variable displacement hydraulic pump set and excavator | |
| CN1405031A (en) | Novel forklift-walking speed-regulating device | |
| CN110259749B (en) | Power control valve block, hydraulic pump assembly and engineering machinery | |
| JP3974076B2 (en) | Hydraulic drive device | |
| CN104763695A (en) | Hydraulic system, radiator system and engineering machinery | |
| CN109915427A (en) | A kind of three pumps with back pressure control are straight to drive electric hydrostatic actuator | |
| JPS61127968A (en) | Speed controller for hydraulic closed circuit drive unit | |
| JP3910137B2 (en) | Hydraulic motor drive device | |
| CN2505323Y (en) | Fork truck running speed-regulating device | |
| CN108167261B (en) | Hydraulic reciprocating driving mechanism and hydraulic reciprocating driving pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |