CN203114768U - Composite electric proportional valve - Google Patents
Composite electric proportional valve Download PDFInfo
- Publication number
- CN203114768U CN203114768U CN 201320127271 CN201320127271U CN203114768U CN 203114768 U CN203114768 U CN 203114768U CN 201320127271 CN201320127271 CN 201320127271 CN 201320127271 U CN201320127271 U CN 201320127271U CN 203114768 U CN203114768 U CN 203114768U
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- CN
- China
- Prior art keywords
- electric proportional
- valve piece
- proportional valve
- throttle valve
- throttle
- 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.)
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Abstract
The utility model discloses a composite electric proportional valve. The composite electric proportional valve comprises an electric proportional valve piece. The composite electric proportional valve is characterized in that the electric proportional valve piece is connected with a throttle valve piece, the throttle valve piece is connected with a hand-operated reversing valve piece, a pressure outlet of the electric proportional valve piece is communicated with a controlling inlet of the throttle valve piece through an oil line, and an outlet of the hand-operated reversing valve piece is communicated with an oil line between the throttle valve piece and the electric proportional valve piece. Due to the fact that the electric proportional valve piece, the throttle valve piece and the hand-operated reversing valve piece are integrated to form a composite electric proportional valve, when power supply is normal, the electric proportional valve piece can be adopted to control working of the throttle valve piece accurately. When power failure happens, the hand-operated reversing valve piece can be adopted to control the throttle valve piece, the situation that a system is crushed due to power failure of the electric proportional valve piece is avoided, and reliability is greatly improved.
Description
Technical field
The utility model relates to the compound electric proportional valve that uses in a kind of hydraulic system.
Background technique
Electric proportional valve is a kind ofly to produce corresponding actions according to proportion electro-magnet in the current signal actuating valve of input, makes the operating valve spool produce displacement, and port size changes and finishes hydraulic element with the proportional pressure output of input current with this.Spool travel feeds back with the form of machinery, hydraulic pressure or electricity, to reach the purpose of accurately determining displacement.
Electric proportional valve needs continued power at work, if electric system breaks down or the electrical apparatus element damage causes the electric proportional valve outage, electric proportional valve quits work, and then causes whole hydraulic system not operate, and causes systemic breakdown.
Summary of the invention
The utility model relates to a kind of compound electric proportional valve of avoiding causing because of outage hydraulic system paralysis, good reliability.
The utility model is achieved in that
A kind of compound electric proportional valve, an electric proportional valve sheet is arranged, its special way is, described electric proportional valve sheet is connected with throttle valve plate, described throttle valve plate is connected with the manual reverse of direction valve block, the pressure output of described electric proportional valve sheet is communicated with by oil circuit with the control inlet opening of throttle valve plate, and the delivery outlet of described manual reverse of direction valve block and throttle valve plate are communicated with oil circuit between the electric proportional valve sheet.
Described manual reverse of direction valve block is provided with nut, delays work to avoid hand-operated direction valve.
The beneficial effects of the utility model are:
Because electric proportional valve sheet, throttle valve plate, manual reverse of direction valve block are integrated into a compound electric proportional valve, when powering just often, can adopt the electric proportional valve sheet accurately to control throttle valve plate work, when outage, can adopt manual reverse of direction valve block control throttle valve plate, avoided because the outage of electric proportional valve sheet causes systemic breakdown, reliability improves greatly.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: oil circuit 1, electric proportional valve sheet 2, throttle valve plate 3, manual reverse of direction valve block 4, nut 401.
Embodiment
As shown in the figure, this compound electric proportional valve has an electric proportional valve sheet 2, and described electric proportional valve sheet 2 is connected with throttle valve plate 3, and described throttle valve plate 3 is connected with manual reverse of direction valve block 4, and an end of described manual reverse of direction valve block 4 is provided with nut 401 by bolt.The pressure output of described electric proportional valve sheet 2 is communicated with by oil circuit 1 with the control inlet opening of throttle valve plate 3, and the delivery outlet of described manual reverse of direction valve block 4 and throttle valve plate 3 are communicated with oil circuit 1 between the electric proportional valve sheet 2.
When not having the electrical signal input, electric proportional valve sheet 2 is in closed condition, and hydraulic oil can't promote throttle valve plate 3 inner spool and move, and the restriction of throttle valve plate 3 is in closed condition, and throttle valve plate 3 is output as zero.
When electrical signal is imported, the pressure output increased pressure of electric proportional valve sheet 2, hydraulic oil promotes throttle valve plate 3 inner spool and moves, the control inlet opening of throttle valve plate 3 is in opening state, along with the pressure output of electric proportional valve sheet 2 is more big, the control of throttle valve plate 3 input is opened more big, and the flow of the hydraulic oil by throttle valve plate 3 increases thereupon.
When electric proportional valve sheet 2 causes and can't work because of outage, the nut 401 of outwarding winding, 4 work of operation manual reverse of direction valve block promote throttle valve plate 3 spools and move, control throttle valve plate 3 inlet openings open or close, thereby realize the adjusting to the hydraulic fluid flow rate of process throttle valve plate 3.
Claims (2)
1. compound electric proportional valve, an electric proportional valve sheet is arranged, it is characterized in that, described electric proportional valve sheet is connected with throttle valve plate, described throttle valve plate is connected with the manual reverse of direction valve block, the pressure output of described electric proportional valve sheet is communicated with by oil circuit with the control inlet opening of throttle valve plate, and the delivery outlet of described manual reverse of direction valve block and throttle valve plate are communicated with oil circuit between the electric proportional valve sheet.
2. compound electric proportional valve according to claim 1, it is characterized in that: described manual reverse of direction valve block is provided with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127271 CN203114768U (en) | 2013-03-20 | 2013-03-20 | Composite electric proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127271 CN203114768U (en) | 2013-03-20 | 2013-03-20 | Composite electric proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114768U true CN203114768U (en) | 2013-08-07 |
Family
ID=48895118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320127271 Expired - Lifetime CN203114768U (en) | 2013-03-20 | 2013-03-20 | Composite electric proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630492A (en) * | 2019-01-23 | 2019-04-16 | 广东诺能泰自动化技术有限公司 | A kind of slim proportioning valve |
-
2013
- 2013-03-20 CN CN 201320127271 patent/CN203114768U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630492A (en) * | 2019-01-23 | 2019-04-16 | 广东诺能泰自动化技术有限公司 | A kind of slim proportioning valve |
| CN109630492B (en) * | 2019-01-23 | 2023-12-05 | 广东诺能泰自动化技术有限公司 | Thin proportional valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160224 Address after: 121015, No. 1, section 66-1, pine slope road, Guta District, Liaoning, Jinzhou Patentee after: JINZHOU LITE HYDRAULIC TECHNOLOGY Co.,Ltd. Address before: 121015, No. 66, pine slope road, Taihe District, Liaoning, Jinzhou Patentee before: Jinzhou Lite Hydraulic Manufacturing Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |