CN105065361A - Proportional flow unit under compound control of electromagnetic switch valves and proportional throttle valve in parallel - Google Patents
Proportional flow unit under compound control of electromagnetic switch valves and proportional throttle valve in parallel Download PDFInfo
- Publication number
- CN105065361A CN105065361A CN201510572497.9A CN201510572497A CN105065361A CN 105065361 A CN105065361 A CN 105065361A CN 201510572497 A CN201510572497 A CN 201510572497A CN 105065361 A CN105065361 A CN 105065361A
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- Prior art keywords
- valve
- flow
- proportional
- parallel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
Abstract
The invention discloses a proportional flow unit under compound control of electromagnetic switch valves and a proportional throttle valve in parallel. The proportional flow unit comprises a Valvistor main valve and a digital continuous compound flow control unit, the digital continuous compound flow control unit is formed by connecting one two-position two-way electromagnetic proportional valve and multiple two-position two-way electromagnetic valves in parallel to be used as a pilot valve, and the flow of the two-position two-way electromagnetic proportional valve is smaller than or equal to that of the two-position two-way electromagnetic valve of the smallest specification among all the two-position two-way electromagnetic valves. The proportional flow unit under compound control of the electromagnetic switch valves and the proportional throttle valve in parallel has the advantages of an existing digital flow control unit technology, and can achieve continuous flow control and meet the requirement for very large flow and anti-explosion application.
Description
Technical field
The present invention relates to the proportional flow unit of a kind of proportional flow control valve, particularly a kind of electromagnetic switch valve that adopt multiple electromagnetic switch valve in parallel and electromagnetic proportional valve to combine to realize flow continuous control and proportional throttle valve complex controll in parallel.
Background technique
In electrohydraulic control system, traditional controlling method realizing hydraulic pressure execution speed adopts the continuously adjustable proportional flow control valve of valve port area, and this mode needs the control valve selecting dimension according to the top speed of hydraulic actuator.For this reason, manufacturing enterprise need possess the product of seriation for user's selection.For the application of large discharge, technical sophistication, product cost is high, and the valve of large gauge is difficult to the characteristic simultaneously taking into account low flow rate condition; In addition, in the application that some are special, need to go to control very large output power with control energy little especially, as in coal production, have requirement of explosion proof, the Proportional valve of existing continuous control cannot meet the demands.In order to improve the problems referred to above, Finland scholar proposes to adopt multiple bi-bit bi-pass electromagnetic switch valve in parallel in recent years, and the method for the quasi-continuous control of flow is carried out in combination, and obtains multiple national inventing patent mandate (WO/2002/086327A1).As shown in Figure 1, basic thought is with multiple bi-bit bi-pass electromagnetic switch valve parallel combination to its control principle, and form a valve group and control large flow, electromagnetic switch valve wherein can be the valve of same size, also can be the valve of different size.If adopt the compound mode of the power series of 2, after combination, it controls the characteristic curve of flow as shown in Figure 2: control flow stepped, this mode is also referred to as digital flow control unit, relative to the method adopting continuously proportional control valve to control flow, it is low that this principle has cost, strong robustness, fault tolerant, valve element position feedback that need not be complicated, the advantage such as particularly contamination resistance is strong, but by the restriction of electromagnetic switch valve ability, this mode cannot be applied to the occasion of large discharge, exist in flow switch process and impact, the problems such as vibration, need the electromagnetic switch valve of larger amt, high-precision flow control could be realized.
Summary of the invention
The object of the invention is to solve above-mentioned digital flow control unit exists can not continuous control output flow, by power of electromagnet restriction, be not suitable for large discharge occasion, there is impact shock in speed regulation process, control power large, the technical problems such as explosion-proof demand application can not be met, one is provided both to have existing digital flow control unit technological merit, flow continuous control can be realized again, and the electromagnetic switch valve of special large discharge and explosion proof applications demand and the proportional flow unit of proportional throttle valve complex controll in parallel can be met.
The present invention solves the problems of the technologies described above the technological scheme adopted to be: the proportional flow unit of electromagnetic switch valve and proportional throttle valve complex controll in parallel, comprise Valvistor main valve and the continuous compound flow controlling unit of numeral, wherein: numeral continuously compound flow controlling unit composes in parallel to use as pilot valve by a bi-bit bi-pass electromagnetic proportional valve and several two-position two-way solenoid valves, the filler opening of its bi-bit bi-pass electromagnetic proportional valve is connected with the filler opening of each two-position two-way solenoid valve and forms the oil inlet end of the continuous compound flow controlling unit of numeral, the oil outlet of bi-bit bi-pass electromagnetic proportional valve is connected with the oil outlet of each two-position two-way solenoid valve and forms the oil outlet end of the continuous compound flow controlling unit of numeral, described several two-position two-way solenoid valves adopt the identical or flow of flow different solenoid valve, the flow of described bi-bit bi-pass electromagnetic proportional valve is less than or equal to the flow of minimum gauge two-position two-way solenoid valve in all two-position two-way solenoid valves, numeral is the oil inlet end of compound flow controlling unit and the P of Valvistor main valve continuously
ccontrol chamber connects, and numeral is the oil outlet end of compound flow controlling unit and the P of Valvistor main valve continuously
bchamber connects.
Described bi-bit bi-pass electromagnetic proportional valve can replace with the how logical electromagnetic proportional valve of multidigit.
The present invention has following beneficial effect:
1) shock and vibration adopting separately electromagnetic switch valve combined flow handoff procedure can be eliminated, there is the two-fold advantage of continuous control and switch control rule.
2) namely the present invention can be used as pilot stage, controls a large Flow valve, also can be used for direct hydraulic control cylinder or oil hydraulic motor.
3) the present invention can adopt the very little continuous control of control power realization to large discharge scope, conveniently realizes intrinsic safety and controls.
4) the guide proportion Flow valve formed does not need electronic sensor and detects feeder loop accordingly, and component are few, cost is low.
5) guide oil is introduced directly into the oil outlet of main valve, increases the output flow of valve, improves the energy efficiency of valve.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art digital flow control unit;
Fig. 2 is for adopting the relation curve of digital flow control unit control signal and output flow shown in Fig. 1;
Fig. 3 is schematic diagram of the present invention;
Fig. 4 is the schematic diagram of the continuous compound flow controlling unit of numeral;
Fig. 5 is the relation curve adopting the continuous compound flow controlling unit control signal of numeral shown in Fig. 4 and output flow;
Fig. 6 is embodiment of the present invention schematic diagram.
In figure, 1-digital flow control unit, 2-main valve plug, 3-main valve housing, 4-main spool spring, 5-1# two-position two-way solenoid valve, 6-2# two-position two-way solenoid valve, 7-(n-1) # two-position two-way solenoid valve, 8-n# two-position two-way solenoid valve, 9-Valvistor main valve, 10-bi-bit bi-pass electromagnetic proportional valve, 11-hydraulic actuator, 12-numeral compound flow controlling unit continuously.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail:
As shown in Figure 3, the proportional flow unit of the electromagnetic switch valve in the present embodiment and proportional throttle valve complex controll in parallel, comprise by main valve plug 2, the Valvistor main valve 9 that main valve housing 3 and main spool spring 4 are formed and the continuous compound flow controlling unit 12 of numeral, wherein: numeral continuously compound flow controlling unit 12 composes in parallel to use as pilot valve by a bi-bit bi-pass electromagnetic proportional valve 10 and several two-position two-way solenoid valves, the filler opening of its bi-bit bi-pass electromagnetic proportional valve 10 is connected with the filler opening of each two-position two-way solenoid valve and forms the oil inlet end of the continuous compound flow controlling unit of numeral, the oil outlet of bi-bit bi-pass electromagnetic proportional valve 10 is connected with the oil outlet of each two-position two-way solenoid valve and forms the oil outlet end of the continuous compound flow controlling unit of numeral, described several two-position two-way solenoid valves adopt the identical or flow of flow different solenoid valve, the flow of described bi-bit bi-pass electromagnetic proportional valve 10 is less than or equal to the flow of minimum gauge two-position two-way solenoid valve in all two-position two-way solenoid valves, numeral is the oil inlet end of compound flow controlling unit and the P of Valvistor main valve 9 continuously
ccontrol chamber connects, and numeral is the oil outlet end of compound flow controlling unit and the P of Valvistor main valve 9 continuously
bchamber connects.
As shown in Figure 4, the continuous compound flow controlling unit of numeral in the present invention is by a bi-bit bi-pass electromagnetic proportional valve 10 and be numbered 1, 2, n-1, several two-position two-way solenoid valves of n compose in parallel, bi-bit bi-pass electromagnetic proportional valve 10 and be numbered 1, 2, n-1, several two-position two-way solenoid valve parallel connections of n use as pilot valve, the filler opening of bi-bit bi-pass electromagnetic proportional valve 10 is connected with the filler opening of each two-position two-way solenoid valve and forms the oil inlet end of the continuous compound flow controlling unit of numeral, the oil outlet of bi-bit bi-pass electromagnetic proportional valve 10 is connected with the oil outlet of each two-position two-way solenoid valve and forms the oil outlet end of the continuous compound flow controlling unit of numeral, several two-position two-way solenoid valves be the identical or flow of flow different solenoid valve, the flow of bi-bit bi-pass electromagnetic proportional valve 10 is less than or equal to the flow of minimum gauge two-position two-way solenoid valve in all two-position two-way solenoid valves.After bi-bit bi-pass electromagnetic proportional valve 10 and several two-position two-way solenoid valve parallel combinations, it controls the characteristic curve of flow as shown in Figure 5, controls flow linearly.
As shown in Figure 6, the proportional flow unit 9 of four electromagnetic switch valves and proportional throttle valve complex controll in parallel combines the action of hydraulic control final controlling element 11.The P of the proportional flow unit of the first two electromagnetic switch valve and proportional throttle valve complex controll in parallel from left to right
amouth is connected, P
amouth is connected with the rodless cavity of oil hydraulic cylinder; The P of the proportional flow unit of latter two electromagnetic switch valve and proportional throttle valve complex controll in parallel
bmouth is connected, P
bmouth is connected with the rod chamber of oil hydraulic cylinder; Second, third P
smouth is connected, the P of the first, the 4th
tmouth connects fuel tank.
Described hydraulic actuator is oil hydraulic cylinder or oil hydraulic motor.
Described bi-bit bi-pass electromagnetic proportional valve can replace with the how logical electromagnetic proportional valve of multidigit.
Claims (2)
1. the proportional flow unit of electromagnetic switch valve and proportional throttle valve complex controll in parallel, comprise Valvistor main valve and the continuous compound flow controlling unit of numeral, it is characterized in that: numeral continuously compound flow controlling unit composes in parallel to use as pilot valve by a bi-bit bi-pass electromagnetic proportional valve and several two-position two-way solenoid valves, wherein the filler opening of bi-bit bi-pass electromagnetic proportional valve is connected with the filler opening of each two-position two-way solenoid valve and forms the oil inlet end of the continuous compound flow controlling unit of numeral, the oil outlet of bi-bit bi-pass electromagnetic proportional valve is connected with the oil outlet of each two-position two-way solenoid valve and forms the oil outlet end of the continuous compound flow controlling unit of numeral, described several two-position two-way solenoid valves adopt the identical or flow of flow different solenoid valve, the flow of described bi-bit bi-pass electromagnetic proportional valve is less than or equal to the flow of minimum gauge two-position two-way solenoid valve in all two-position two-way solenoid valves, numeral is the oil inlet end of compound flow controlling unit and the P of Valvistor main valve continuously
ccontrol chamber connects, and numeral is the oil outlet end of compound flow controlling unit and the P of Valvistor main valve continuously
bchamber connects.
2. the proportional flow unit of electromagnetic switch valve according to claim 1 and proportional throttle valve complex controll in parallel, is characterized in that: described bi-bit bi-pass electromagnetic proportional valve can replace with the how logical electromagnetic proportional valve of multidigit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572497.9A CN105065361B (en) | 2015-09-09 | 2015-09-09 | Proportional flow unit under compound control of electromagnetic switch valves and proportional throttle valve in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572497.9A CN105065361B (en) | 2015-09-09 | 2015-09-09 | Proportional flow unit under compound control of electromagnetic switch valves and proportional throttle valve in parallel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065361A true CN105065361A (en) | 2015-11-18 |
| CN105065361B CN105065361B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510572497.9A Active CN105065361B (en) | 2015-09-09 | 2015-09-09 | Proportional flow unit under compound control of electromagnetic switch valves and proportional throttle valve in parallel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105065361B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654079A (en) * | 2017-10-12 | 2019-04-19 | 华东交通大学 | The outlet throttling load port separate control valves that full switch valve group is closed |
| CN111828409A (en) * | 2020-07-23 | 2020-10-27 | 中国人民解放军陆军装甲兵学院 | Hydraulic drive unit based on two-stage energy supply and load port independent valve control technology |
| CN113513496A (en) * | 2021-06-07 | 2021-10-19 | 亿昇(天津)科技有限公司 | Pneumatic emptying system of centrifugal blower |
| CN114046290A (en) * | 2021-11-25 | 2022-02-15 | 太原理工大学 | Pressure pulse testing device and method for automobile radiator |
| CN116241524A (en) * | 2023-03-15 | 2023-06-09 | 浙江大学 | Digital flow generation device of engineering machinery and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208387U (en) * | 1986-12-10 | 1987-12-12 | 西安交通大学 | Binary digital valve for flow control |
| CN1570403A (en) * | 2003-07-18 | 2005-01-26 | 庄海 | Digitalized linear proportional flow parallel control valve |
| US20080110165A1 (en) * | 2006-11-14 | 2008-05-15 | Hamkins Eric P | Energy recovery and reuse methods for a hydraulic system |
| US20090302245A1 (en) * | 2008-06-09 | 2009-12-10 | Kristian Lernmark | Fluid control valve and valve body |
| CN102155449A (en) * | 2011-03-31 | 2011-08-17 | 太原理工大学 | Digitally controlled leading type proportional flow valve |
| CN102449319A (en) * | 2009-05-29 | 2012-05-09 | 美卓造纸机械公司 | Hydraulic system for a machine for producing a fiber web |
| DE102012007108A1 (en) * | 2012-04-07 | 2013-10-10 | Robert Bosch Gmbh | Valvistor arrangement has pilot branch, in which pilot valve and associated pressure regulator are arranged, where pressure regulator is arranged downstream of pilot valve |
-
2015
- 2015-09-09 CN CN201510572497.9A patent/CN105065361B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208387U (en) * | 1986-12-10 | 1987-12-12 | 西安交通大学 | Binary digital valve for flow control |
| CN1570403A (en) * | 2003-07-18 | 2005-01-26 | 庄海 | Digitalized linear proportional flow parallel control valve |
| US20080110165A1 (en) * | 2006-11-14 | 2008-05-15 | Hamkins Eric P | Energy recovery and reuse methods for a hydraulic system |
| US20090302245A1 (en) * | 2008-06-09 | 2009-12-10 | Kristian Lernmark | Fluid control valve and valve body |
| CN102449319A (en) * | 2009-05-29 | 2012-05-09 | 美卓造纸机械公司 | Hydraulic system for a machine for producing a fiber web |
| CN102155449A (en) * | 2011-03-31 | 2011-08-17 | 太原理工大学 | Digitally controlled leading type proportional flow valve |
| DE102012007108A1 (en) * | 2012-04-07 | 2013-10-10 | Robert Bosch Gmbh | Valvistor arrangement has pilot branch, in which pilot valve and associated pressure regulator are arranged, where pressure regulator is arranged downstream of pilot valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654079A (en) * | 2017-10-12 | 2019-04-19 | 华东交通大学 | The outlet throttling load port separate control valves that full switch valve group is closed |
| CN109654079B (en) * | 2017-10-12 | 2024-02-20 | 华东交通大学 | Full-switch valve combined outlet throttle load port independent control valve |
| CN111828409A (en) * | 2020-07-23 | 2020-10-27 | 中国人民解放军陆军装甲兵学院 | Hydraulic drive unit based on two-stage energy supply and load port independent valve control technology |
| CN113513496A (en) * | 2021-06-07 | 2021-10-19 | 亿昇(天津)科技有限公司 | Pneumatic emptying system of centrifugal blower |
| CN114046290A (en) * | 2021-11-25 | 2022-02-15 | 太原理工大学 | Pressure pulse testing device and method for automobile radiator |
| CN114046290B (en) * | 2021-11-25 | 2023-07-14 | 太原理工大学 | Pressure pulse testing device and method for automobile radiator |
| CN116241524A (en) * | 2023-03-15 | 2023-06-09 | 浙江大学 | Digital flow generation device of engineering machinery and control method |
| CN116241524B (en) * | 2023-03-15 | 2024-01-12 | 浙江大学 | Digital flow generation device of engineering machinery and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105065361B (en) | 2017-04-26 |
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