CN202580141U - Electrical control proportional valve - Google Patents
Electrical control proportional valve Download PDFInfo
- Publication number
- CN202580141U CN202580141U CN 201220136413 CN201220136413U CN202580141U CN 202580141 U CN202580141 U CN 202580141U CN 201220136413 CN201220136413 CN 201220136413 CN 201220136413 U CN201220136413 U CN 201220136413U CN 202580141 U CN202580141 U CN 202580141U
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- proportional valve
- way
- valve
- oil outlet
- oil
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Abstract
The utility model discloses an electrical control proportional valve, belonging to the technical field of hydraulic control. The electrical control proportional valve comprises an ascending proportional valve, a descending proportional valve, a one-way valve, a three-way pressure compensator and a throttling hole, wherein the throttling hole is formed between an oil outlet of the ascending proportional valve and an oil outlet of the descending proportional valve, an oil outlet of the descending proportional valve is connected with an oil return port R1, the one-way valve is arranged between an oil inlet of the descending proportional valve and the oil outlet of the ascending proportional valve, the oil outlet of the ascending proportional valve is connected with a control oil port of the three-way pressure compensator, the control port of the three-way pressure compensator is provided with the throttling hole, and the oil inlet of the ascending proportional valve is connected with the oil inlet of the three-way pressure compensator. The electrical control proportional valve has the beneficial effects of integrating several cartridge valves to realize the same functions by utilizing the traditional two-position and two-way proportional valve and adopting a plug-in mounting design, reducing the cost on the premise of equivalent reliability, realizing serialization and commercialization of products and meeting requirements of more users.
Description
Technical field
The utility model relates to a kind of electronically controlled proportional valve, belongs to the hydraulics field.
Background technique
The at present domestic electrohydraulic control system that does not still have to be used for mechanically moving is controlled the electronically controlled proportional valve that one-way cylinder goes up and down; Though have many companies that this series products can be provided abroad; But in the product of company, the rising Proportional valve that adopts in its electronically controlled proportional valve is commonly two-bit triplet Proportional valve or three six logical Proportional valves abroad.The former can not find commercial specification in the international market, and in order to realize commercialization, offshore company all develops this two-bit triplet Proportional valve voluntarily, and it has high input, and cost is high.Though the latter is a mature technology, price is higher.
Summary of the invention
To the problem that above-mentioned existing technology exists, the utility model provides a kind of electronically controlled proportional valve, can realize same function, under the suitable prerequisite of reliability, reduces cost, and realizes Products in Seriesization, commercialization.
To achieve these goals; The technological scheme that the utility model adopts is: a kind of electronically controlled proportional valve; Comprise rising Proportional valve, decline Proportional valve, one-way valve, three-way pressure compensating device and throttle orifice, be provided with throttle orifice between the oil outlet of the oil outlet of rising Proportional valve and decline Proportional valve, the oil outlet of decline Proportional valve is connected with return opening R1; Be provided with one-way valve between the oil outlet of the filler opening of decline Proportional valve and rising Proportional valve; The oil outlet of rising Proportional valve is connected with the control port of three-way pressure compensating device, and the control port of three-way pressure compensating device carries throttle orifice, and the filler opening of rising Proportional valve is connected with the filler opening of three-way pressure compensating device.
The rising control valve is the 2/2-way Proportional valve.
Also comprise the relief valve that is connected between decline Proportional valve oil outlet and the filler opening.
The beneficial effect of the utility model is: during use, the oil inlet P mouth is connected with quantitative hydraulic pump, and oil outlet A1 or A2 mouth order effect oil cylinder, return opening R and R1 mouth connected tank, pressure taps M adorns pressure measuring tie-in, so that measuring pressure.When the rising Proportional valve was switched on, one-way cylinder rose under the effect of pressure oil; Regulate the electrical current of proportion electro-magnet, the speed that can regulate rising; The rising Proportional valve cooperates with the three-way pressure compensating device, realizes the shunting of flow: partial discharge leads to oil cylinder, extra flow oil sump tank, the proportional control of realization cylinder action speed.When the decline Proportional valve was switched on, one-way cylinder descended under the effect of load; Regulate the electrical current of proportion electro-magnet, the speed that can regulate decline.When rising Proportional valve and decline Proportional valve all during no electric circuit, oil cylinder is under the effect of load, and decline Proportional valve and one-way valve remain on no leak condition, and load is quiet heavy little.Existing 2/2-way Proportional valve capable of using, through plug-in type design integrated other several kinds of cartridge valves, realize same function; Under the suitable prerequisite of reliability, reduce cost, realize Products in Seriesization, commercialization, the part important technological parameters surpasses external product, satisfies the needs of more users.
Description of drawings
Fig. 1 is the schematic diagram of two-bit triplet Proportional valve;
Fig. 2 is the schematic diagram of three six logical Proportional valves;
Fig. 3 is the schematic diagram of the utility model;
Fig. 4 is a kind of improved schematic diagram of the utility model;
Fig. 5 is the another kind of improved schematic diagram of the utility model.
Among the figure: 1, rising Proportional valve, 2, the decline Proportional valve, 3, one-way valve, 4, the three-way pressure compensating device, 5, throttle orifice.
Embodiment
To combine accompanying drawing that the utility model is described further below.
As shown in Figure 3; The utility model comprises rising Proportional valve 1, decline Proportional valve 2, one-way valve 3, three-way pressure compensating device 4 and throttle orifice 5; Be provided with throttle orifice 5 between the oil outlet of the oil outlet of rising Proportional valve 1 and decline Proportional valve 2; The oil outlet of decline Proportional valve 2 is connected with return opening R1, is provided with one-way valve 3 between the oil outlet of the filler opening of decline Proportional valve 2 and rising Proportional valve 1, and the oil outlet of rising Proportional valve 1 is connected with the control port of three-way pressure compensating device 4; The control port of three-way pressure compensating device 4 carries throttle orifice, and the filler opening of rising Proportional valve 1 is connected with the filler opening of three-way pressure compensating device 4.
During use,, the oil inlet P mouth is connected with quantitative hydraulic pump like Fig. 3 or shown in Figure 4, oil outlet A1 or A2 mouth order effect oil cylinder, return opening R and R1 mouth connected tank, pressure taps M adorns pressure measuring tie-in, so that measuring pressure.When 1 energising of rising Proportional valve, one-way cylinder rises under the effect of pressure oil; Regulate the electrical current of proportion electro-magnet, the speed that can regulate rising; Rising Proportional valve 1 cooperates with three-way pressure compensating device 4, realizes the shunting of flow: partial discharge leads to oil cylinder, extra flow oil sump tank, the proportional control of realization cylinder action speed.When 2 energisings of decline Proportional valve, one-way cylinder descends under the effect of load; Regulate the electrical current of proportion electro-magnet, the speed that can regulate decline.When rising Proportional valve 1 and decline Proportional valve 2 all during no electric circuit, oil cylinder is under the effect of load, and decline Proportional valve 2 remains on no leak condition with one-way valve 3, and load is quiet heavy little.
Utilize the rising Proportional valve 1 of existing 2/2-way Proportional valve as this electronically controlled proportional valve, through plug-in type design integrated other several kinds of cartridge valves, realize same function; More can under the suitable prerequisite of reliability, reduce cost, realize Products in Seriesization, commercialization, the part important technological parameters surpasses external product.
As a kind of modified model, under some occasion, can remove the throttle orifice 5 (as shown in Figure 4) in the system, thereby make the design of valve piece simpler, process more convenient.
In addition, under some occasion, also can in system, add relief valve 6 (as shown in Figure 5), relief valve 6 mainly plays level pressure overflow, voltage stabilizing, system unloaded and safety protection effect.
Claims (3)
1. electronically controlled proportional valve; It is characterized in that; Comprise rising Proportional valve (1), decline Proportional valve (2), one-way valve (3), three-way pressure compensating device (4) and throttle orifice (5); Be provided with throttle orifice (5) between the oil outlet of the oil outlet of rising Proportional valve (1) and decline Proportional valve (2); The oil outlet of decline Proportional valve (2) is connected with return opening R1, is provided with one-way valve (3) between the oil outlet of the filler opening of decline Proportional valve (2) and rising Proportional valve (1), and the oil outlet of rising Proportional valve (1) is connected with the control port of three-way pressure compensating device (4); The control port of three-way pressure compensating device (4) carries throttle orifice, and the filler opening of rising Proportional valve (1) is connected with the filler opening of three-way pressure compensating device (4).
2. a kind of electronically controlled proportional valve according to claim 1 is characterized in that, described rising control valve (1) is the 2/2-way Proportional valve.
3. a kind of electronically controlled proportional valve according to claim 1 and 2 is characterized in that, also comprises the relief valve (6) that is connected between decline Proportional valve (2) oil outlet and the filler opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136413 CN202580141U (en) | 2012-03-31 | 2012-03-31 | Electrical control proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136413 CN202580141U (en) | 2012-03-31 | 2012-03-31 | Electrical control proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580141U true CN202580141U (en) | 2012-12-05 |
Family
ID=47249553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220136413 Expired - Fee Related CN202580141U (en) | 2012-03-31 | 2012-03-31 | Electrical control proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580141U (en) |
-
2012
- 2012-03-31 CN CN 201220136413 patent/CN202580141U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20170331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |