CN101701581A - Intelligent adjustable variable flow gear pump device - Google Patents
Intelligent adjustable variable flow gear pump device Download PDFInfo
- Publication number
- CN101701581A CN101701581A CN200910232891A CN200910232891A CN101701581A CN 101701581 A CN101701581 A CN 101701581A CN 200910232891 A CN200910232891 A CN 200910232891A CN 200910232891 A CN200910232891 A CN 200910232891A CN 101701581 A CN101701581 A CN 101701581A
- Authority
- CN
- China
- Prior art keywords
- gear pump
- flow
- gear
- valve
- worm
- 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.)
- Pending
Links
Images
Abstract
The invention provides an intelligent adjustable variable flow gear pump device, belonging to the technical field of mechanical electrical and hydraulic system integration design. The device is mainly composed of a gear pump, a flow regulation device and a control system, wherein, the inlet and the outlet of the gear pump are respectively connected with the outlet and the inlet of the flow regulation device by a hydraulic pipeline; after detecting various work condition signals, the control system outputs a processed control instruction to drive a stepper motor to move; a worm and gear transmission mechanism is used for transferring the movement of the stepper motor to a stem of a regulating valve in the flow regulation device so as to drive a spool to rotate; and fluid pressure at two ends of the valve is adjusted by flow variation. The motor works by steps. The valve flow can be adjusted by the worm and gear transmission mechanism to stably and continuously vary within the set range, so that the outlet pressure and the flow of the gear pump can be adjusted as required and are free from mutation, thus ensuring the working stability of the whole system and realizing flow supply as required.
Description
Technical field
The invention belongs to the integrated design field of mechanical electrical and hydraulic system, be specifically related to a kind of intelligent adjustable variable flow gear pump device.
Background technique
Volume-type hydraulic pump mainly contains three kinds of gear pump, plunger pump and vane pumps.Wherein, plunger pump and vane pump can manufacture various forms of variable displacement pumps, and are used widely in various machinery.Gear pump and plunger pump, vane pump under identical power conditions, obviously have simple in structure, volume is little, advantage such as in light weight.Gear pump with variable capacity can be adjusted discharge capacity according to the variation of other operating mode factor (as load, temperature etc.) under the certain situation of input speed, realize supplying with as required.Adopt gear pump with variable capacity can obtain good energy-saving effect, (as the oil pump of lubricating system of IC engine) has very big application potential in various machinery hydraulic systems.But because the working principle of gear pump and structural condition restriction realize that there is very big difficulty in its displacement variation.Mostly existing design studies be to start with from improving gear pump component structural aspect, realizes variable by adjusting working chamber volume or outlet hydrodynamic pressure.These methods all have very high required precision to the design and the processing aspect of component, exist a lot of realistic problems to be difficult to solve in actual applications.
Summary of the invention
The objective of the invention is in conjunction with existing gear pump structure feature commonly used, introduce intelligent adjustable flow control valve and related sensor device, a kind of intelligent adjustable variable flow gear pump device is provided, this device is mainly by gear pump, flow regulator and control system three parts constitute, specifically comprise gear pump 1, pressure transducer 2, connecting pipeline 3, spool 4, valve rod 5, worm screw 6, worm gear 7, stepper motor 8, control unit 9, gear pump arrangement provided by the present invention utilize hydraulic pipe line 3 that the entrance and exit of gear pump 1 is connected with inlet with the outlet of flow regulator respectively, control unit 9 input ends are connected with two pressure transducers 2 that are installed in gear pump 1 entrance and exit place respectively by electronic circuit, the other end of control unit 9 is connected with stepper motor 8 by cable, and stepper motor 8 is by worm gear 7, worm screw 6 is connected with valve rod 5, and valve rod 5 is connected with spool 4 in being installed in hydraulic pipe line 3.
Gear pump structure is similar to common gear pump, mainly is made of input shaft 13, pump cover 14, driving gear 15, the pump housing 16, driven gear 17, driven gear shaft 18 and safety valve 19, and concrete structure is seen Figure of description 3, Fig. 4.
Flow regulator mainly is made of spool 4, valve rod 5, worm screw 6, worm gear 7, stepper motor 8, handwheel 10, valve body 11, valve gap 12, and concrete structure is seen Figure of description 2.
Control system mainly is made of sensor, A/D converter, control chip and power amplifier, and its work is by the control of the software program in the core control part, and core control part can be that single-chip microcomputer, process control machine or microprocessor are formed.The whole micro parts that adopts of The whole control system is integrated on the circuit board so that install.This control system schematic representation is seen Figure of description 5.
The groundwork process of intelligent adjustable variable flow gear pump device provided by the invention is, control system is digital signal by the A/D chip with these analog signal conversion after utilizing sensor to arrive fluid pressure signal, temperature signal and the load signal at gear pump 1 inlet/outlet place.Then digital signal is delivered to core control part inside, in conjunction with relevant expert data library information, core control part compares analysis with signal and the parameter that sets in advance, export control command then, through power amplifier signal is amplified again and handle and drive stepping motor 8 is carried out motion control.Utilize worm gear 7 worm screws 6 to give valve rod 5, and then drive spool 4 rotations, and then adjust the pump duty and the outlet pressure of gear pump 1 by the size of adjusting flow the transmission of movement of stepper motor 8.
Three constituent elements of intelligent adjustable variable flow gear pump device provided by the invention can always be fitted together, also can carry out dispersed placement according to practical situations, thereby very strong flexibility is arranged on general structure design, can satisfy the user demand under the different occasions.Motor 8 carries out work by " step ", and control accuracy is very high, by worm gear 7 worm screws 6 driving mechanisms, can make the opening amount control accuracy of flow control valve corresponding very high, and can realize that the flow size can steady and continuous change in the scope of setting.These characteristics can guarantee that gear pump 1 outlet pressure and flow all can adjust as required, and can not undergo mutation, thereby can ensure the reliability and stability of whole system work, realize as required for stream.
Good effect of the present invention has:
1, the intelligent adjustable variable flow gear pump system of Ti Chuing can realize the gear pump outlet pressure and for flow within the specific limits and continuously according to the operating mode demand, steady change, realize as required can producing very strong technology, economic effect for stream.
2, system of the present invention each several part flexible arrangement during the structure of employing is formed, does not need gear pump structure is done too big change, can make full use of existing gear pump structure according to occasion; The flow control part-structure is also fairly simple, and relevant control system is soft, hardware design is also very ripe, thereby stronger use value is arranged.
Description of drawings
Fig. 1 is that the structure of intelligent adjustable variable flow gear pump device is formed schematic representation.
Fig. 2 is the flow regulator structural representation.
Fig. 3 is the gear pump structure schematic representation.
Fig. 4 is that the A-A of Fig. 3 is to sectional view.
Fig. 5 is the control system schematic representation.
Among Fig. 1: 1 gear pump, 2 pressure transducers, 3 connecting tubes, 4 spools, 5 valve rods, 6 worm screws, 7 worm gears, 8 stepper motors, 9 control units, the media flow direction is shown in arrow among the figure.
Among Fig. 2: 10 handwheels, 11 modulating valve raft bodies, 12 valve gaps.
Among Fig. 3: 13 gear pump input shafts, 14 pump covers, 15 driving gears, 16 pump housings, 17 driven gears, 18 driven gear shafts.
Among Fig. 4: 19 safety valves.
Embodiment
As shown in Figure 1, utilize hydraulic pipe line 3 that the entrance and exit of gear pump 1 is connected with inlet with the outlet of flow regulator respectively.Control system is handled through core control part 9 inside utilizing various sensor behind various working condition signals, exports control command drive stepping motor 8 then and moves.Utilize worm gear 7 worm screws 6 driving mechanisms to give the valve rod 5 of flow control valve, and then drive spool 4 and rotate, adjust the pump duty and the outlet pressure of gear pump 1 by the flow through variation of regulating valve flow of adjustment with the transmission of movement of stepper motor 8.
As shown in Figure 2, be the flow regulator structural representation.Valve rod 5 is with after spool 4 is fixedlyed connected, and main body is installed in the valve body 11, and the lower end is by valve gap 12 installing and locating.Step-like borehole structure is arranged in the valve body 11, gapped between valve rod 5 and this circular hole, adopt seal arrangement to seal.Cylindrical spool 4 can rotate freely in cylindrical valve pocket and can constitute the non-contact type sealing.Spool 4 has the cross through hole structure, can adjust the flow area of import and export by rotational valve core.The other end of valve rod 5 is connected with worm gear 7 by flat key, guarantees that the worm gear 7 and the corner of spool are consistent.Worm screw 6 and stepper motor 8 coaxial flushing, and be meshed with worm gear 7 and realize the transmission of motor movement.The other end of worm screw 6 links to each other with handwheel 10, can manually modulating valve cut out when control system breaks down, and whole system will guarantee the Security of equipment work with the form work of metering pump this moment.Valve body 11 adopts the pipe thread structure to be connected with connecting tube 3 into and out of oral-lateral.
As shown in Figure 3, gear pump structure is similar to common gear pump, and Fig. 4 is that the A-A of this figure is to sectional view.Mainly constitute by parts such as input shaft 13, pump cover 14, driving gear 15, the pump housing 16, driven gear 17, driven gear shaft 18 and safety valves 19.Under extraneous drive power source, input shaft 13 drives driving gear 15 and drives driven gear 17 rotations, realizes the conveying of fluid by the continuous variation of both sides volume.The inlet/outlet both sides are connected with inlet by the outlet of connecting tube 3 with modulating valve respectively.Like this, under the effect of modulating valve, can realize the adjustment of gear pump both sides hydrodynamic pressure and output flow.When flow control system broke down or transship, safety valve 19 can play a protective role to gear pump.
Claims (1)
1. intelligent adjustable variable flow gear pump device, it is characterized in that this intelligent adjustable variable flow gear pump device is mainly by gear pump, flow regulator and control system three parts constitute, specifically comprise gear pump (1), pressure transducer (2), connecting pipeline (3), spool (4), valve rod (5), worm screw (6), worm gear (7), stepper motor (8) and control unit (9), wherein said hydraulic pipe line (3) is connected with the outlet of flow regulator the entrance and exit of gear pump (1) respectively with inlet, the input end of described control unit (9) is connected with two pressure transducers (2) that are installed in gear pump (1) entrance and exit place respectively by electronic circuit, the other end of control unit (9) is connected with described stepper motor (8) by cable, described stepper motor (8) is by worm gear (7), worm screw (6) is connected with valve rod (5), and valve rod (5) is connected with spool (4) in being installed in hydraulic pipe line (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232891A CN101701581A (en) | 2009-10-21 | 2009-10-21 | Intelligent adjustable variable flow gear pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232891A CN101701581A (en) | 2009-10-21 | 2009-10-21 | Intelligent adjustable variable flow gear pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101701581A true CN101701581A (en) | 2010-05-05 |
Family
ID=42156505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910232891A Pending CN101701581A (en) | 2009-10-21 | 2009-10-21 | Intelligent adjustable variable flow gear pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101701581A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975161A (en) * | 2010-11-04 | 2011-02-16 | 奇瑞汽车股份有限公司 | Gear pump |
| CN103498793A (en) * | 2013-10-24 | 2014-01-08 | 北京航空航天大学 | Variable gear pump |
| CN104024744A (en) * | 2011-10-27 | 2014-09-03 | 阿尔法拉瓦尔股份有限公司 | Method of controlling a variable delivery pump fitted to a heating system |
| CN109268259A (en) * | 2018-11-26 | 2019-01-25 | 太原科技大学 | A kind of gear pump and noise-reduction method of low-flux pulse |
-
2009
- 2009-10-21 CN CN200910232891A patent/CN101701581A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975161A (en) * | 2010-11-04 | 2011-02-16 | 奇瑞汽车股份有限公司 | Gear pump |
| CN104024744A (en) * | 2011-10-27 | 2014-09-03 | 阿尔法拉瓦尔股份有限公司 | Method of controlling a variable delivery pump fitted to a heating system |
| CN104024744B (en) * | 2011-10-27 | 2015-07-29 | 阿尔法拉瓦尔股份有限公司 | Control the method for the variable delivery pump be assembled in heating system |
| CN103498793A (en) * | 2013-10-24 | 2014-01-08 | 北京航空航天大学 | Variable gear pump |
| CN109268259A (en) * | 2018-11-26 | 2019-01-25 | 太原科技大学 | A kind of gear pump and noise-reduction method of low-flux pulse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203147014U (en) | Intelligent valve | |
| CN103291596B (en) | Compressor flow control system based on clearance is adjusted | |
| CN101701581A (en) | Intelligent adjustable variable flow gear pump device | |
| CN102635582A (en) | High-pressure high-flow alternating-current servo direct-driven threaded flow valve | |
| CN108386401A (en) | Hydraulic press quick response system | |
| CN103775321B (en) | Hydraulic resistance balance formula servocontrol volume adjustable hydraulic pump | |
| CN106884831A (en) | A kind of hydraulic circuit of solid-liquid engine calibrated in situ power source | |
| CN201273315Y (en) | Electrohydraulic digital corner meter | |
| CN203463045U (en) | Control device of automatic derrick worker rotating mechanism | |
| CN214887516U (en) | Metering pump capable of intelligently and digitally adjusting flow | |
| CN200999734Y (en) | Device pump | |
| CN104454702A (en) | Electro-hydraulic executing power unit of turbocharging unit | |
| CN205330814U (en) | Stepless free speed governing diesel engine | |
| CN212106221U (en) | Automatic confining pressure pump | |
| CN204477442U (en) | Servo electric machine type numerical control multiplex valve | |
| CN210153011U (en) | Double-oil pump system of large bending machine | |
| CN112983774A (en) | Metering pump capable of intelligently and digitally adjusting flow and application thereof | |
| CN201206554Y (en) | Electrohydraulic type contraprop adjusting device at entrance of compressor | |
| CN201795051U (en) | O-shaped ring sealing valve | |
| CN101799028B (en) | Valve position indicator for indicating position of hydraulic actuator | |
| CN201251018Y (en) | Energy conservation flow control device | |
| CN114077772A (en) | Intelligent control hydraulic system and functional loop simulation modeling method thereof | |
| CN205401895U (en) | Orthoscopic minute adjustment valve | |
| CN213629082U (en) | Electric control type vacuum pressure regulating valve | |
| CN213711933U (en) | Can realize invariable solenoid valve of discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100505 |