Flush valve group

Abstract

The utility model discloses a flushing valve group, and relates to the technical field of valve groups. The flushing valve set comprises a rectangular valve body, a low-pressure side shuttle valve is installed on the left side face of the valve body, an oil return opening is formed in the front side face of the valve body, a first executing mechanism connector and a second executing mechanism connector are formed in the rear side face of the valve body, and a pressure measuring opening is formed in the upper side face of the valve body. The low-pressure side shuttle valve comprises a first working port, a second working port and a public port, the first working port is connected with the first actuating mechanism interface, the second working port is connected with the second actuating mechanism interface, and the public port is connected with the oil return port. The flushing valve group aims at return oil cooling control of the motor, a high-pressure inlet of the motor can be switched to a low-pressure side shuttle valve, so that a small part of oil liquid of return oil of the other opening of the motor is unloaded to an oil tank through the low-pressure side shuttle valve, and the oil liquid is cooled. The oil temperature in the hydraulic system can return to normal better, and the service life of hydraulic oil and hydraulic elements is not affected by the oil temperature.

Description

Technical Field

[0001] This utility model relates to the field of valve assembly technology, and in particular to a flushing valve assembly. Background Technology

[0002] When a hydraulic system is working, pressure loss, volumetric loss, and mechanical loss are all converted into heat energy, causing the oil temperature to rise. This is especially true in high-power closed-loop circuits, where the oil temperature tends to rise even higher over extended periods. The operating temperature of the hydraulic fluid affects the lifespan of the hydraulic oil and hydraulic components. Changes in oil temperature cause changes in oil viscosity, leading to instability in the mechanical system's movement speed. Therefore, it is essential to control the oil temperature within a certain range. In this case, reducing the hydraulic oil temperature and providing cooling is crucial. This application provides a flushing valve assembly that helps control the return oil cooling of the motor, allowing the oil temperature in the hydraulic system to return to normal and ensuring that the lifespan of the hydraulic oil and hydraulic components is not affected by oil temperature. Utility Model Content

[0003] This utility model addresses the technical problems mentioned in the background section by providing a flushing valve assembly.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This utility model provides a flushing valve assembly. The flushing valve assembly includes a rectangular valve body, a low-pressure side shuttle valve installed on the left side of the valve body, an oil return port on the front side of the valve body, a first actuator interface and a second actuator interface on the rear side of the valve body, and a pressure measuring port on the upper side of the valve body;

[0006] The low-pressure side shuttle valve includes a first working port, a second working port, and a common port. The first working port is connected to the interface of the first actuator, the second working port is connected to the interface of the second actuator, and the common port is connected to the return port.

[0007] Preferably, the pressure measuring port is located between the oil return port and the common port, and is used to measure the pressure at the oil return port.

[0008] Preferably, the first actuator interface is connected to the first motor, the second actuator interface is connected to the second motor, and the oil return port is connected to the oil cylinder.

[0009] Preferably, the mounting holes are four through holes located on the upper side of the valve body.

[0010] Preferably, the low-pressure side shuttle valve is a cartridge valve.

[0011] Preferably, the valve body is made of alloy steel.

[0012] The positive and progressive effects of this utility model are as follows: This utility model provides a flushing valve assembly. The flushing valve assembly includes a rectangular valve body, a low-pressure side shuttle valve installed on the left side of the valve body, a return oil port on the front side of the valve body, a first actuator interface and a second actuator interface on the rear side of the valve body, and a pressure measuring port on the upper side of the valve body. The low-pressure side shuttle valve includes a first working port, a second working port, and a common port. The first working port is connected to the first actuator interface, the second working port is connected to the second actuator interface, and the common port is connected to the return oil port. This utility model's flushing valve assembly, for controlling the return oil cooling of a motor, can switch the high-pressure inlet of the motor to the low-pressure side shuttle valve, allowing a small portion of the return oil from the other port of the motor to be unloaded and returned to the oil tank through the low-pressure side shuttle valve, thus cooling the oil. This better allows the oil temperature in the hydraulic system to return to normal, ensuring that the lifespan of the hydraulic oil and hydraulic components is not affected by oil temperature. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the unfolded structure of the valve body of this utility model.

[0014] Figure 2 This is a schematic diagram of the low-pressure side shuttle valve of this utility model.

[0015] Figure 3 The working principle of the flushing valve assembly of this utility model is as follows.

[0016] Legend: 1. Valve body; 2. Low-pressure side shuttle valve; 3. First actuator interface; 4. Second actuator interface; 5. Oil return port; 6. Pressure test port; 7. Mounting hole; 21. First working port; 22. Second working port; 23. Common port. Detailed Implementation

[0017] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments described herein.

[0018] Example 1

[0019] like Figure 1-3 As shown, this embodiment provides a flushing valve assembly. The flushing valve assembly includes a rectangular valve body 1, a low-pressure side shuttle valve 2 installed on the left side of the valve body 1, a return oil port 5 on the front side of the valve body 1, a first actuator interface 3 and a second actuator interface 4 on the rear side of the valve body 1, and a pressure measuring port 6 on the upper side of the valve body 1; wherein, the low-pressure side shuttle valve 2 includes a first working port 21, a second working port 22 and a common port 23, the first working port 21 is connected to the first actuator interface 3, the second working port 22 is connected to the second actuator interface 4, and the common port 23 is connected to the return oil port 5.

[0020] Pressure test port 6 is located between return port 5 and common port 23, and is used to measure the pressure at return port 5. An external pressure gauge can be connected to pressure test port 6, allowing customers to monitor the pressure value at return port 5 in real time, and better set the return back pressure according to customer pressure requirements.

[0021] The first actuator interface 3 is connected to the first motor, the second actuator interface 4 is connected to the second motor, and the oil return port 5 is connected to the oil cylinder.

[0022] Mounting holes 7 are four through holes located on the upper side of valve body 1; the low-pressure side shuttle valve 2 is a slide valve; valve body 1 is made of alloy steel. In this embodiment, the low-pressure side shuttle valve 2 has a floating structure, which can reduce interference caused by installation torque and errors in hole machining.

[0023] The working principle of this utility model is as follows: In the initial state, the low-pressure side shuttle valve 2 is in a normally closed state, that is, the first working port 21 and the second working port 22 of the low-pressure side shuttle valve 2 are not connected to the common port 23.

[0024] When hydraulic oil enters from the first actuator interface 3 (first motor), the high pressure will switch to the low pressure side shuttle valve 2. The low pressure side shuttle valve 2 is connected, that is, the second working port 22 of the low pressure side shuttle valve 2 is connected to the common port 23, so that a small part of the oil returning from the second actuator interface 4 (second motor) flows out through the second working port 22 and the common port 23 of the low pressure side shuttle valve 2, and returns to the oil tank through the return port 5, so that the oil is cooled.

[0025] When hydraulic oil enters from the second actuator interface 4 (second motor), the high pressure will switch to the low pressure side shuttle valve 2. The low pressure side shuttle valve 2 is connected, that is, the first working port 21 of the low pressure side shuttle valve 2 is connected to the common port 23, so that a small part of the oil returning from the first actuator interface 3 (first motor) flows out through the first working port 21 and the common port 23 of the low pressure side shuttle valve 2, and returns to the oil tank through the return port 5, so that the oil is cooled.

[0026] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A flushing valve assembly, characterized in that, The flushing valve assembly includes a rectangular valve body, a low-pressure side shuttle valve installed on the left side of the valve body, an oil return port on the front side of the valve body, a first actuator interface and a second actuator interface on the rear side of the valve body, and a pressure measuring port on the upper side of the valve body. The low-pressure side shuttle valve includes a first working port, a second working port, and a common port. The first working port is connected to the interface of the first actuator, the second working port is connected to the interface of the second actuator, and the common port is connected to the return port.

2. The flushing valve assembly as described in claim 1, characterized in that, The pressure measuring port is located between the oil return port and the common port, and is used to measure the pressure at the oil return port.

3. The flushing valve assembly as described in claim 1, characterized in that, The first actuator interface is connected to the first motor, the second actuator interface is connected to the second motor, and the oil return port is connected to the oil cylinder.

4. The flushing valve assembly as described in claim 1, characterized in that, The mounting holes are four through holes located on the upper side of the valve body.

5. The flushing valve assembly as described in claim 1, characterized in that, The low-pressure side shuttle valve is a slide valve.

6. The flushing valve assembly as described in claim 1, characterized in that, The valve body is made of alloy steel.

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