CN209340251U - A kind of reducing valve with zero leakage function - Google Patents
A kind of reducing valve with zero leakage function Download PDFInfo
- Publication number
- CN209340251U CN209340251U CN201822090810.7U CN201822090810U CN209340251U CN 209340251 U CN209340251 U CN 209340251U CN 201822090810 U CN201822090810 U CN 201822090810U CN 209340251 U CN209340251 U CN 209340251U
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- China
- Prior art keywords
- reducing valve
- oil inlet
- valve
- switch
- manual switch
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Abstract
The utility model discloses a kind of reducing valve with zero leakage function, two-way oil inlet passage in parallel is wherein set between the oil inlet end of reducing valve and valve assembly (3), motor switch (2) and manual switch are respectively arranged on the two-way oil inlet passage.In this way, electronic and manual switch is closed by the electronic and manual switch for integrating two-way parallel connection in reducing valve oil inlet end when not working, zero leakage when realizing that reducing valve does not work by switch.Manual switch is used when using motor switch, ground check and debugging when flight, it is ensured that the long-life of product and high reliability.
Description
Technical field
The utility model belongs to technical field of hydraulic pressure more particularly to a kind of reducing valve with zero leakage function.
Background technique
Reducing valve is mainly used in army's machine hydraulic system, has the function of decompression and safe unloading pressure, being mainly used for will be hydraulic
Pressure required for pressure to hydraulic system.Existing reducing valve work passes through valve group therein in decompression state
The oil return opening of the conical surface closure piston component of part seals, because two parts of the cone-shaped seal structure are stainless steel material,
It is unable to reach zero leakage.It, can be steady using small reservoir or small volume because of unmanned plane if reducing valve is used for UAV system
The front ends such as depressor pressure supply device, prolonged minor leakage can also be such that the built-in oil liquid of fuel tank largely reduces, to cause small-scale liquid
Pressure system can not work normally.Currently in order to this is solved the problems, such as, using the pump regular replenishment oil liquid by unmanned machine hydraulic system
Method, can start hydraulic system repeatedly, shorten lifetime of system.
Utility model content
In view of the above situation of the prior art, the purpose of the utility model is to provide a kind of subtracting with zero leakage function
Valve is pressed, to guarantee that unmanned plane small-sized hydraulic system can work normally for a long time.
The technical solution of the utility model includes: a kind of reducing valve with zero leakage function, it is characterised in that depressurizing
Two-way oil inlet passage in parallel is set between the oil inlet end and valve assembly of valve, is respectively set on the two-way oil inlet passage
There are motor switch and manual switch.
Further, it on the oil inlet passage for being provided with manual switch, is provided with and leads to external oil return opening, to facilitate
When not working, oil liquid is discharged.
Further, the motor switch uses solenoid valve.Manual switch includes handle and slide valve, and slide valve is arranged in correspondence
In the oil inlet passage of manual switch, handle is connected with slide valve.
In this way, closing electricity when not working by the electronic and manual switch for integrating two-way parallel connection in reducing valve oil inlet end
Dynamic and manual switch, zero leakage when realizing that reducing valve does not work by switch.Motor switch, ground check are used when flight
And manual switch is used when debugging, it is ensured that the long-life of product and high reliability.
The utility model has the beneficial effects that 1) realize decompression by being arranged in parallel the electronic and manual switch in oil inlet end
The leakage of valve zero.2) electric or hand switch can be selected on demand, when flight adopts when using motor switch, ground check and debugging
With manual switch, guarantee long-life and the high reliability of product.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the reducing valve with zero leakage function of the utility model.
Wherein, 1- shell, 2- motor switch, 3- valve assembly, 4- piston component, 5- pressure spring, 6- pressure regulating screw, 7-
Slide valve, 8- handle.
Specific embodiment
In order to be more clearly understood that the purpose of this utility model, technical solution and advantage, with reference to the accompanying drawings and embodiments,
The present invention will be further described in detail.
Fig. 1 is the structural schematic diagram of the reducing valve with zero leakage function of the utility model.As shown in Figure 1, this
The reducing valve of utility model includes shell 1, valve assembly 3, piston component 4, the pressure spring 5, pressure regulation of setting within the case 1
Screw 6, wherein valve assembly 3 under spring force, withstands on its conical surface on the oil return opening of piston component 4, pressure spring 5
It covers on piston component 4, pressure regulating screw 6 heads on pressure spring 5, changes the precommpression of pressure spring 5 by twisting pressure regulating screw 6
Amount, fits closely pressure spring 5 with piston component 4.
Particularly, in reducing valve of the utility model with zero leakage function, in reducing valve oil inlet end J and
It is provided with two-way oil inlet passage in parallel between valve assembly 3, is respectively arranged with motor switch 2 on the two-way oil inlet passage
And manual switch.Conventional solenoid valve can be used in the motor switch, realizes the on-off of corresponding oil inlet passage.Manual switch includes
Handle 8 and slide valve 7, slide valve 7 are arranged in the oil inlet passage corresponding to manual switch, and handle and slide valve 7 connect.When handle is got to
When position (in the figure to the left) opened, realize that oil inlet J is connected to valve assembly 3, oil inlet oil liquid reaches valve assembly 3, gets to pass
Position (in figure to the right) when, close corresponding oil inlet oil circuit, while can be discharged in oil circuit by leading to external oil return opening H '
Oil liquid.
The reducing valve of the utility model design works in the following ways:
The oil inlet end of reducing valve integrates the motor switch 2 and manual switch of two-way parallel connection, and driven opening is closed when not working
2 and manual switch to be closed, realizes the shutdown of oil inlet passage, when realizing that reducing valve does not work, oil liquid is not up to valve assembly, from
And realize zero leakage.Motor switch 2 is used when flight, oil liquid enters reducing valve, driven opening by the oil inlet J on shell 1
Close device 2 ground control under be powered after open, oil liquid enter valve assembly 3 throttling opening and depressurize, the decompressed pressure and
It is balanced each other by the pre-compression force that the pressure regulating screw 6 set up in advance generates pressure spring 5, if decompressed pressure is excessively high, oil liquid will be pushed away
Piston component 4 is opened, by the oil return aperture on piston component 4, reaches equilibrium state again through oil return hole H release, realizes safety
Release, reducing valve export stable decompressed pressure by the pressure-reduction outlet S on shell 1.It uses when ground check and debugging and opens manually
When closing unlocking manually, handle 8 is switched into oil inlet and is opened, oil liquid enters valve group by the oil inlet passage of manual switch side
Part.In this way, it is ensured that the long-life of reducing valve and high reliability.In addition, electricity can also be opened simultaneously when ground check and debugging
Dynamic switch 2 and manual switch.
Claims (4)
1. a kind of reducing valve with zero leakage function, it is characterised in that in the oil inlet end and valve assembly of reducing valve
(3) two-way oil inlet passage in parallel is set between, motor switch (2) and manual is respectively arranged on the two-way oil inlet passage
Switch.
2. reducing valve described in accordance with the claim 1, wherein the motor switch uses solenoid valve.
3. reducing valve described in accordance with the claim 1, wherein manual switch includes handle (8) and slide valve (7), and slide valve (7) is set
It sets in the oil inlet passage for corresponding to manual switch, handle (8) and slide valve (7) connection.
4. reducing valve described in accordance with the claim 1, wherein being additionally provided with logical on the oil inlet passage for being provided with manual switch
To external oil return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822090810.7U CN209340251U (en) | 2018-12-12 | 2018-12-12 | A kind of reducing valve with zero leakage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822090810.7U CN209340251U (en) | 2018-12-12 | 2018-12-12 | A kind of reducing valve with zero leakage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209340251U true CN209340251U (en) | 2019-09-03 |
Family
ID=67756929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822090810.7U Active CN209340251U (en) | 2018-12-12 | 2018-12-12 | A kind of reducing valve with zero leakage function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209340251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875335A (en) * | 2022-12-14 | 2023-03-31 | 南京德沃克自动化有限公司 | Automatic mechanical pressure limiting device |
-
2018
- 2018-12-12 CN CN201822090810.7U patent/CN209340251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875335A (en) * | 2022-12-14 | 2023-03-31 | 南京德沃克自动化有限公司 | Automatic mechanical pressure limiting device |
| CN115875335B (en) * | 2022-12-14 | 2023-10-20 | 南京德沃克自动化有限公司 | Automatic mechanical pressure limiting device |
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