CN215634073U - Combined hydraulic control valve - Google Patents
Combined hydraulic control valve Download PDFInfo
- Publication number
- CN215634073U CN215634073U CN202122219155.2U CN202122219155U CN215634073U CN 215634073 U CN215634073 U CN 215634073U CN 202122219155 U CN202122219155 U CN 202122219155U CN 215634073 U CN215634073 U CN 215634073U
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- shell
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- control valve
- housing
- hydraulic control
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Abstract
The utility model discloses a combined hydraulic control valve, which relates to the technical field of control valves and comprises a first shell, wherein one end of the first shell is provided with a liquid inlet, the other end of the first shell is provided with a liquid outlet, a pressure reducing device is arranged in the first shell, and the outer wall of the first shell is provided with a backflow pressurizing device. According to the utility model, when the internal pressure of the first shell is higher, the pressure reducing device can be used for reducing pressure, and when the internal pressure of the first shell is lower, the backflow pressurizing device can be used for pressurizing, so that the internal pressure of the first shell can be well adjusted.
Description
Technical Field
The utility model relates to the technical field of control valves, in particular to a combined hydraulic control valve.
Background
A hydraulic valve is an automatic element operated by pressure oil, which is controlled by the pressure oil of a pressure distribution valve, and is usually used in combination with an electromagnetic pressure distribution valve, in which the pressure control valve is also called a pressure control valve, and an overflow valve in the pressure control valve is capable of controlling a hydraulic system to maintain a constant state when a set pressure is reached. Among them, a relief valve for overload protection is called an overload relief valve. When the system is in failure and the pressure rises to a limit value which can cause damage, the valve port of the overload safety valve is opened to overflow, so as to ensure the safety of the system.
The existing partial hydraulic valve can not change the pressure regulating overflow capacity of the partial hydraulic valve according to the internal pressure, and has many disadvantages when in use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: in order to solve the above problems, a combined hydraulic control valve is proposed.
In order to achieve the purpose, the combined hydraulic control valve adopts the following technical scheme: the device comprises a first shell, wherein a liquid inlet is formed in one end of the first shell, a liquid outlet is formed in the other end of the first shell, a pressure reducing device is arranged in the first shell, and a backflow pressurizing device is arranged on the outer wall of the first shell;
backflow supercharging device is including being fixed in first shell outer wall second shell, the stock solution chamber has been seted up to the inside of second shell, the inside in stock solution chamber slides and is provided with first piston, one side that first piston is close to the liquid outlet is provided with first spring, backward flow chamber and a plurality of feed liquor chamber have been seted up to the one end in stock solution chamber, backward flow chamber and a plurality of feed liquor chamber all link up mutually with first shell, and are a plurality of the inside in feed liquor chamber all is provided with the check valve, the gas pocket has been seted up to the one end that the feed liquor chamber was kept away from in the stock solution chamber.
Furthermore, pressure relief device includes the honeycomb duct, the both ends of honeycomb duct all are provided with the second piston, two the second piston respectively with first shell inner wall sliding connection, the one end of one of them second piston is provided with the second spring that resets to the inlet, the inner wall of first shell is provided with the ring baffle who restricts the second spring position.
Furthermore, the position of the backflow cavity communicated with the first shell is located at one end, close to the liquid inlet, of the pressure reducing device.
Further, the position where the liquid inlet cavity is communicated with the first shell is located between the two second pistons.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, when the internal pressure of the first shell is higher, the pressure reducing device can be used for reducing pressure, and when the internal pressure of the first shell is lower, the backflow pressurizing device can be used for pressurizing, so that the internal pressure of the first shell can be well adjusted.
Drawings
FIG. 1 is an external view of a combined hydraulic control valve according to the present invention;
fig. 2 is a sectional view of a combined hydraulic control valve according to the present invention.
In the figure: 1. a first housing; 101. a liquid inlet; 102. a liquid outlet; 103. an annular baffle; 2. a pressure reducing device; 201. a flow guide pipe; 202. a second piston; 203. a second spring; 3. a reflux supercharging device; 301. a second housing; 302. a liquid storage cavity; 303. a first piston; 304. a first spring; 305. a liquid inlet cavity; 307. a reflux cavity; 308. and (4) air holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, a combined hydraulic control valve includes a first housing 1, one end of the first housing 1 is provided with a liquid inlet 101, the other end of the first housing 1 is provided with a liquid outlet 102, a pressure reducing device 2 is arranged inside the first housing 1, and the outer wall of the first housing 1 is provided with a backflow pressurizing device 3;
the backflow supercharging device 3 comprises a second shell 301 fixed on the outer wall of the first shell 1, a liquid storage cavity 302 is formed in the second shell 301, a first piston 303 is arranged in the liquid storage cavity 302 in a sliding mode, a first spring 304 is arranged on one side, close to the liquid outlet 102, of the first piston 303, a backflow cavity 307 and a plurality of liquid inlet cavities 305 are formed in one end of the liquid storage cavity 302, the backflow cavity 307 and the plurality of liquid inlet cavities 305 are communicated with the first shell 1, check valves are arranged in the plurality of liquid inlet cavities 305, and an air hole 308 is formed in one end, far away from the liquid inlet cavities 305, of the liquid storage cavity 302; in practical applications, the check valve controls the liquid to flow into the liquid inlet chamber 305, and the liquid cannot flow back into the first housing 1.
Further, the pressure reducing device 2 comprises a flow guide pipe 201, the two ends of the flow guide pipe 201 are provided with second pistons 202, the two second pistons 202 are respectively connected with the inner wall of the first housing 1 in a sliding manner, one end of one second piston 202 is provided with a second spring 203 which resets to the liquid inlet 101, and the inner wall of the first housing 1 is provided with an annular baffle 103 which limits the position of the second spring 203.
Further, the position where the return cavity 307 communicates with the first housing 1 is located at one end of the pressure reducing device 2 near the liquid inlet 101.
Further, the position where the liquid inlet chamber 305 communicates with the first housing 1 is located at a position between the two second pistons 202.
The working principle is as follows: liquid enters from the liquid inlet 101 end and is discharged from the liquid outlet 102 end, when the internal pressure of the first housing 1 is higher, the liquid enters the liquid storage cavity 302 from the backflow cavity 307 and pushes the first piston 303 in the liquid storage cavity 302 to move towards the air hole 308, when the internal pressure of the first housing 1 continues to increase, the liquid pushes the second piston 202 to move towards the liquid outlet 102 end, and then the liquid enters the liquid storage cavity 302 from the liquid inlet 305, so that the pressure reduction treatment can be carried out when the internal pressure of the first housing 1 is higher;
when the internal pressure of the first housing 1 is low, the first piston 303 is returned to the return cavity 307 by the first spring 304, and the liquid in the reservoir cavity 302 flows back to the inside of the first housing 1 through the return cavity 307, so that the pressurization process can be performed when the internal pressure of the first housing 1 is low.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (4)
1. A combined hydraulic control valve comprises a first shell (1), wherein one end of the first shell (1) is provided with a liquid inlet (101), and the other end of the first shell (1) is provided with a liquid outlet (102), and is characterized in that a pressure reducing device (2) is arranged inside the first shell (1), and a backflow pressurizing device (3) is arranged on the outer wall of the first shell (1);
backflow supercharging device (3) is including being fixed in first shell (1) outer wall second shell (301), stock solution chamber (302) have been seted up to the inside of second shell (301), the inside slip of stock solution chamber (302) is provided with first piston (303), one side that first piston (303) are close to liquid outlet (102) is provided with first spring (304), return flow chamber (307) and a plurality of feed liquor chamber (305) have been seted up to the one end of stock solution chamber (302), return flow chamber (307) and a plurality of feed liquor chamber (305) all link up mutually with first shell (1), and are a plurality of the inside of feed liquor chamber (305) all is provided with the check valve, gas pocket (308) have been seted up to the one end that feed liquor chamber (305) were kept away from in stock solution chamber (302).
2. A combined hydraulic control valve according to claim 1, characterized in that the pressure reducing device (2) comprises a flow guide pipe (201), wherein the two ends of the flow guide pipe (201) are respectively provided with a second piston (202), the two second pistons (202) are respectively connected with the inner wall of the first housing (1) in a sliding manner, one end of one second piston (202) is provided with a second spring (203) which returns to the liquid inlet (101), and the inner wall of the first housing (1) is provided with an annular baffle (103) which limits the position of the second spring (203).
3. A combined hydraulic control valve according to claim 2, characterised in that the return chamber (307) communicates with the first housing (1) at the end of the pressure reducing device (2) adjacent the inlet port (101).
4. A combined hydraulic control valve according to claim 2, characterised in that the point where the inlet chamber (305) communicates with the first housing (1) is located at a point between the two second pistons (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122219155.2U CN215634073U (en) | 2021-09-14 | 2021-09-14 | Combined hydraulic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122219155.2U CN215634073U (en) | 2021-09-14 | 2021-09-14 | Combined hydraulic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215634073U true CN215634073U (en) | 2022-01-25 |
Family
ID=79915765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122219155.2U Active CN215634073U (en) | 2021-09-14 | 2021-09-14 | Combined hydraulic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215634073U (en) |
-
2021
- 2021-09-14 CN CN202122219155.2U patent/CN215634073U/en active Active
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