Bidirectional balance valve group with functions of preventing speed dropping and keeping load

Abstract

The utility model provides a two-way balance valve group with functions of preventing speed dropping and keeping load, and relates to the technical field of valve groups. The balance valve set comprises a rectangular valve body, a balance valve is installed on the right side face of the valve body, a first executing mechanism connector and a second executing mechanism connector are arranged on the top face and the bottom face of the valve body respectively, an oil source port is formed in the front side face of the valve body, and a pilot port is formed in the rear side face of the valve body. The balance valve comprises an oil inlet, an oil outlet and a pilot outer connector. According to the utility model, the balance valve group is mounted in a plate manner, namely, the actuating mechanism interface of the balance valve group is directly and tightly connected with the mounting interface of the oil cylinder, so that the condition of external pipelines is reduced, the condition that the actuating mechanism is out of speed in the operation process due to sudden burst of the external pipelines is effectively prevented, and the service life of the actuating mechanism is prolonged. The function of maintaining the load is realized, and the situation of safety accidents caused by sudden load drop is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve group technical field, especially a kind of bidirectional balance valve group of preventing speed loss and load retention function. BACKGROUND

[0002] The existing balance valve is bulky, heavy, and slightly bulky in actual application, especially in some cases where the installation space is particularly limited, it is often impossible to use. The existing installation form of the balance valve group mostly needs external pipeline to be connected with the oil cylinder or motor, which can easily cause the pipeline to burst suddenly in some specific environments, resulting in different loads on both sides, which can cause one of the oil cylinder or motor to lose speed during operation and cause safety accidents due to sudden decrease in overall load. SUMMARY

[0003] The utility model provides a kind of bidirectional balance valve group of preventing speed loss and load retention function to the technical problem presented in the above background technology.

[0004] The utility model solves the above technical problem by the following technical scheme:

[0005] The utility model provides a kind of bidirectional balance valve group of preventing speed loss and load retention function. The bidirectional balance valve group includes the valve body of rectangular body, first balance valve and second balance valve are installed on the rear side of the valve body side by side, first actuating mechanism interface and second actuating mechanism interface are provided on the front side of the valve body side by side, first oil source port and second oil source port are provided on the upper side of the valve body side by side;

[0006] First oil inlet, first oil outlet and first pilot port are provided on the first balance valve, the first oil inlet is connected with the first oil source port, and the first oil outlet is connected with the first actuating mechanism interface.

[0007] Second oil inlet, second oil outlet and second pilot port are provided on the second balance valve, the second oil inlet is connected with the second oil source port, and the second oil outlet is connected with the second actuating mechanism interface.

[0008] The first pilot port is connected with the second oil source port, and the second pilot port is connected with the first oil source port.

[0009] Preferably, a first check valve is connected to the first oil source port, and the other end of the first check valve is connected to the first actuating mechanism interface.

[0010] Preferably, a second check valve is connected to the second oil source port, and the other end of the second check valve is connected to the second actuating mechanism interface.

[0011] Preferably, the upper side of the valve body is provided with mounting holes, and the mounting holes are four through holes distributed at four corners of the upper side of the valve body.

[0012] Preferably, the first balance valve and the second balance valve are plug-in valves, and the valve body is made of alloy steel.

[0013] The positive progress effect of the utility model lies in: the utility model provides a bidirectional balance valve group with the functions of preventing speed drop and load keeping. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a valve body part structure expansion schematic view.

[0015] Figure 2 The utility model discloses a first balance valve structure schematic view.

[0016] Figure 3 The utility model discloses a first balance valve structure schematic view.

[0017] Figure 4 The utility model discloses a bidirectional balance valve group with the functions of preventing speed drop and load keeping.

[0018] Legend: 1, valve body;2, first balance valve;3, first actuator interface;4, second actuator interface;5, first oil source port;6, second balance valve;7, mounting hole;8, second oil source port;21, first oil inlet;22, first oil outlet;23, first pilot port;24, first check valve;61, second oil inlet;62, second oil outlet;63, second pilot port;64, second check valve. DETAILED DESCRIPTION

[0019] The utility model will be further explained by the mode of embodiment below, but will not limit the utility model in the embodiment range of the embodiment.

[0020] Example 1

[0021] As Figures 1-4The embodiment shown provides a bidirectional balance valve group for preventing speed loss and load holding function. The bidirectional balance valve group comprises a rectangular valve body 1, a first balance valve 2 and a second balance valve 6 are installed side by side on the rear side of the valve body 1, a first actuator interface 3 and a second actuator interface 4 are arranged side by side on the front side of the valve body 1, and a first oil source port 5 and a second oil source port 8 are arranged side by side on the upper side of the valve body 1;

[0022] The first balance valve 2 is provided with a first oil inlet 21, a first oil outlet 22 and a first pilot port 23, the first oil inlet 21 is connected with the first oil source port 5, and the first oil outlet 22 is connected with the first actuator interface 3; the second balance valve 6 is provided with a second oil inlet 61, a second oil outlet 62 and a second pilot port 63, the second oil inlet 61 is connected with the second oil source port 8, and the second oil outlet 62 is connected with the second actuator interface 4; the first pilot port 23 is connected with the second oil source port 8, and the second pilot port 63 is connected with the first oil source port 5.

[0023] The first oil source port 5 is connected with a first one-way valve 24, and the other end of the first one-way valve 24 is connected with the first actuator interface 3.

[0024] The second oil source port 8 is connected with a second one-way valve 64, and the other end of the second one-way valve 64 is connected with the second actuator interface 4.

[0025] The upper side of the valve body 1 is provided with mounting holes 7, and the mounting holes 7 are four through holes distributed at four corners of the upper side of the valve body 1.

[0026] The first balance valve 2 and the second balance valve 6 are plug-in valves, and the valve body 1 is made of alloy steel.

[0027] The working principle of the utility model is as follows: hydraulic oil enters from the first oil source port 5 and the second oil source port 8, and flows into the first actuator interface 3 and the second actuator interface 4 to a motor or a cylinder through the first one-way valve 24 and the second one-way valve 64 respectively, so that the cylinder or the motor can realize normal work; at this time, the first balance valve 2 and the second balance valve 6 are in a normally closed state, that is, the first oil inlet 21 and the first oil outlet 22 of the first balance valve 2 are not connected, and the second oil inlet 61 and the second oil outlet 62 of the second balance valve 6 are not connected.

[0028] When the pressure of the first actuator interface 3 is too large and reaches the preset pressure of the first pilot port 23, the force of the second oil source port 8 acting on the first pilot port 23 opens the first balance valve 2, that is, the first oil inlet 21 and the first oil outlet 22 are connected, so as to ensure that the oil return of the first actuator interface 3 flows out through the first oil source port 5.

[0029] When the pressure of the second actuator interface 4 is too large and reaches the preset pressure of the second pilot port 63, the force of the first oil source port 5 acting on the second pilot port 63 opens the second balance valve 6, that is, the second oil inlet port 61 and the second oil outlet port 62 are communicated, and the oil return of the second actuator interface 4 is ensured to flow out through the second oil source port 8.

[0030] The hydraulic oil flowing into the first actuator interface 3 and the second actuator interface 4 through the first balance valve 2 and the second balance valve 6 is reverse unloading to the first oil source port 5 and the second oil source port 8, and in this process, the bidirectional balance valve group realizes the reverse unloading of the equipment on both sides, and in the process of reverse unloading, the function of preventing the two sides of the actuator from being decelerated is realized, and when the equipment is stopped, the function of keeping the load on both sides is realized.

[0031] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application 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 the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A bidirectional balancing valve assembly with anti-disengagement and load-holding functions, characterized in that, The bidirectional balance valve group comprises a rectangular valve body, a first balance valve and a second balance valve are installed side by side on the rear side of the valve body, a first actuator interface and a second actuator interface are arranged side by side on the front side of the valve body, and a first oil source port and a second oil source port are arranged side by side on the upper side of the valve body; The first balance valve is provided with a first oil inlet port, a first oil outlet port and a first pilot port, the first oil inlet port is connected with the first oil source port, and the first oil outlet port is connected with the first actuator interface; The second balance valve is provided with a second oil inlet port, a second oil outlet port and a second pilot port, the second oil inlet port is connected with the second oil source port, and the second oil outlet port is connected with the second actuator interface; The first pilot port is connected with the second oil source port, and the second pilot port is connected with the first oil source port.

2. The bi-directional counterbalance valve assembly of claim 1, wherein, The first oil source port is connected with a first one-way valve, and the other end of the first one-way valve is connected with the first actuator interface.

3. The bi-directional counterbalance valve assembly of claim 2, wherein the load holding function is provided by the second spool valve. The second oil source port is connected with a second one-way valve, and the other end of the second one-way valve is connected with the second actuator interface.

4. The bi-directional counterbalance valve assembly of claim 3, wherein the load holding function is provided by the second spool valve. The upper side of the valve body is provided with mounting holes, and the mounting holes are four through holes distributed in four corners of the upper side of the valve body.

5. The bi-directional counterbalance valve assembly of claim 4, wherein the load holding function is provided by the second spool valve. The first balance valve and the second balance valve are plug-in valves, and the valve body is made of alloy steel.

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