CN2773367Y - Digital-directional flow valve - Google Patents
Digital-directional flow valve Download PDFInfo
- Publication number
- CN2773367Y CN2773367Y CN 200420084770 CN200420084770U CN2773367Y CN 2773367 Y CN2773367 Y CN 2773367Y CN 200420084770 CN200420084770 CN 200420084770 CN 200420084770 U CN200420084770 U CN 200420084770U CN 2773367 Y CN2773367 Y CN 2773367Y
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- valve
- utility
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- pressure
- switching valve
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Abstract
The utility model relates to a digital-directional flow valve which comprises a switching valve, a step motor and a drive mechanism, wherein the drive mechanism is composed of a spiral groove, a rotating shaft, a transmission shaft and a transmission wheel. An output shaft of the step motor is connected with the transmission wheel through the transmission shaft, and the transmission wheel is connected with one end of a switching valve core, the other end of which is connected with the spiral groove. A screw pair is composed of the spiral groove and the rotating shaft arranged on the spiral groove. The rotation motion of the step motor is changed to rectilinear motion, and the reversing and opening of the switching valve core can be controlled. In addition, the utility model is also provided with a pressure compensation part which is composed of a pressure reducing valve and a shuttle valve, and inlet pressure and outlet pressure of a switching valve opening are kept constant. Thus, the flow capacity is relevant to the opening of the switching valve opening, and is irrelevant to the size of system pressure and load pressure. The utility model can also be added with a rotary transformer, etc. for closed loop control. The requirements of automatic control and accurate and continuous flow capacity adjustment of a hydraulic system can be realized by the utility model. Because the utility model can be directly controlled by a computer, a digital to analogue converting device is omitted, and the computer can conveniently control.
Description
Affiliated technical field
The utility model relates to the hydraulic element that a kind of hydraulic system direction, flow control are used, promptly digital directional flow valve.
Background technique
Along with the extensive use of hydraulics in every field, people have proposed the popularization and application of more and more higher requirement, especially computer to hydraulic element, make traditional element face to be digitized the requirement of transformation.The directional flow control valve that uses in the hydraulic system has electro-hydraulic proportional valve and electrohydraulic control at present.Though electro-hydraulic proportional valve, electrohydraulic control can computerized control, but require electrical system that digiverter is arranged, be not easy to computer control, and electro-hydraulic proportional valve, electrohydraulic control are subjected to the influence of spool frictional force and temperature and pressure, the drift at its zero point is bigger, and repeatability is low.
The utility model content
Technical problem of the present utility model is: overcome the deficiencies in the prior art, provide a kind of and can realize automatic, continuous, telecontrol, do not need digiverter with computer interface, directly by Digital Signals, the digital directional flow valve that repeatability is high, thus drift reduced and the ring that stagnates.
Technical solution of the present utility model is: digital directional flow valve, comprise selector valve, its characteristics are: also comprise being used to control selector valve commutation and the stepper motor of openings of sizes and the driving mechanism that joins with stepper motor, driving mechanism is connected with changeover valve core.
Described driving mechanism is made up of spiral chute, running shaft, transmission shaft and drive wheel, the output shaft of stepper motor connects with drive wheel by transmission shaft, drive wheel contacts with changeover valve core one end, the other end of changeover valve core connects spiral chute, spiral chute and running shaft are formed screw pair, by this screw pair rotatablely moving of stepper motor is converted into straight line motion, the displacement of control changeover valve core, thus realization is to the control of flow size and Orientation.
In addition, on the basis of said structure, can also add and be useful on pressure compensated reduction valve and shuttle valve, its structure is: the outlet of reduction valve links to each other with the inlet of selector valve, two outlets of the right chamber of reduction valve, selector valve link to each other with shuttle valve respectively, select the mouth that pressure is high in selector valve two outlets to link up with the right chamber of reduction valve by shuttle valve, reduction valve keeps the difference that enters pressure and outflow pressure of this mouthful constant.
Working principle of the present utility model is: the utility model divides the band pressure compensation and is not with two kinds of pressure compensations.Not basic identical with the structure and the principle of common selector valve with pressure compensated selector valve, the motion of different is changeover valve core is not by solenoid actuated, and by step motor drive, the aperture that makes the commutation valve port is near step-less adjustment, and the commutation valve port has played the effect of throttle valve; Keep constant with will the commutate inlet pressure of valve port and the difference of outlet pressure of pressure compensated reduction valve and shuttle valve, make flow only relevant with the aperture of commutation valve port, irrelevant substantially with the size of system pressure and induced pressure, realize high-precision directional flow control.
The beneficial effect that the utility model compared with prior art has is: the utility model changes flow control device into step motor drive by manual tune or solenoid actuated, realized the automatic and manual requirement of adjusting flow accurately, continuously of hydraulic system, the ring that stagnates is little, the repeatability height, and owing to can directly drive by computer, save digiverter, be convenient to computer control.In addition, the utility model can be used for open loop control and closed loop control.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model;
Fig. 2 is for having the structure sectional view of pressure compensation part in the utility model.
Among the figure: 1 is that stepper motor, 2 is that spiral chute, 3 is that support, 4 is that changeover valve core, 5 is that reduction valve, 6 is rotary transformer, or encoder, or angle transducer, 7 is that running shaft, 8 is that drive wheel, 9 is that pin, 10 is that transmission shaft, 11 is a shuttle valve
Embodiment
As shown in Figure 1, embodiment of the present utility model comprises: changeover valve core 4, stepper motor 1, transmission shaft 10, drive wheel 8, spiral chute 2, running shaft 7, the output shaft of stepper motor 1 connects with transmission shaft 10 by woodruff key, transmission shaft 1O connects with drive wheel 8 by pin 9, drive wheel 8 connects by flat key with changeover valve core 4 one ends, the left end of changeover valve core 4 connects a spiral chute 2 by flat key, spiral chute 2 is formed screw pair with the running shaft 7 on the support 3, by this screw pair rotatablely moving of stepper motor 1 is converted into straight line motion, the displacement of control changeover valve core 4, thus realization is to the control of flow size and Orientation.
As shown in Figure 2, in addition, on the basis of said structure, can also add and be useful on pressure compensated reduction valve 5 and shuttle valve 11, its structure is: the outlet of reduction valve 5 links to each other with the inlet of selector valve 4, the right chamber of reduction valve 5, two outlets of selector valve 4 link to each other with shuttle valve 11 respectively, select the mouth that pressure is high in 4 liang of outlets of selector valve to link up by shuttle valve 11 with the right chamber of reduction valve 5, reduction valve 5 keeps the difference that enters pressure and outflow pressure of this mouthful constant, make flow only relevant with the aperture of commutation valve port, irrelevant substantially with the size of system pressure and induced pressure, realize high-precision directional flow control.
Can also connect rotary transformer behind the stepper motor in said structure, or encoder, or angle transducer 6, with the corner of feedback stepper motor, the computer close-loop control that is used for joining with it.
Claims (4)
1, digital directional flow valve comprises selector valve, it is characterized in that: the driving mechanism that also comprises stepper motor, joins with stepper motor, driving mechanism contacts with changeover valve core.
2, digital directional flow valve according to claim 1, it is characterized in that: described driving mechanism is made up of spiral chute, running shaft, transmission shaft and drive wheel, the output shaft of stepper motor connects with drive wheel by transmission shaft, drive wheel contacts with changeover valve core one end, the other end of changeover valve core connects spiral chute, and spiral chute and running shaft are formed screw pair.
3, digital directional flow valve according to claim 1 is characterized in that: also comprise being used for pressure compensated reduction valve and shuttle valve, the outlet of reduction valve links to each other with the inlet of selector valve, and two outlets of the right chamber of reduction valve and selector valve link to each other with shuttle valve respectively.
4, according to claim 1 or 2 or 3 described digital directional flow valves, it is characterized in that: also be connected to the rotary transformer that is used for closed loop control behind the described stepper motor, or encoder, or angle transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420084770 CN2773367Y (en) | 2004-08-09 | 2004-08-09 | Digital-directional flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420084770 CN2773367Y (en) | 2004-08-09 | 2004-08-09 | Digital-directional flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773367Y true CN2773367Y (en) | 2006-04-19 |
Family
ID=36708630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420084770 Expired - Lifetime CN2773367Y (en) | 2004-08-09 | 2004-08-09 | Digital-directional flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773367Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295548A (en) * | 2013-09-11 | 2015-01-21 | 昆山新金福精密电子有限公司 | Digital directional flow valve |
| CN106382272A (en) * | 2016-10-28 | 2017-02-08 | 北京机械设备研究所 | Proportion direction flow rotary valve with output flow independent of load interference |
| CN111577699A (en) * | 2020-05-26 | 2020-08-25 | 青岛鸿合数字技术有限公司 | Implementation method for electric proportional control hydraulic multi-way valve |
-
2004
- 2004-08-09 CN CN 200420084770 patent/CN2773367Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295548A (en) * | 2013-09-11 | 2015-01-21 | 昆山新金福精密电子有限公司 | Digital directional flow valve |
| CN106382272A (en) * | 2016-10-28 | 2017-02-08 | 北京机械设备研究所 | Proportion direction flow rotary valve with output flow independent of load interference |
| CN111577699A (en) * | 2020-05-26 | 2020-08-25 | 青岛鸿合数字技术有限公司 | Implementation method for electric proportional control hydraulic multi-way valve |
| CN111577699B (en) * | 2020-05-26 | 2022-05-10 | 青岛鸿合数字技术有限公司 | Implementation method for electric proportional control hydraulic multi-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140809 Granted publication date: 20060419 |