Integrated double-loop hydraulic control valve

Abstract

The utility model relates to the technical field of hydraulic components, and particularly discloses an integrated double-loop hydraulic control valve which comprises a valve block, a manual control valve, a pressure sensor, a temperature sensor and a filtering device. The valve block is connected with a metering pump; a main oil way is arranged in the valve block, and a manual control valve is arranged at the joint of the main oil way and the oil return pipeline. The double-loop hydraulic system is arranged in the double-loop hydraulic system, the double-loop hydraulic system and the double-loop hydraulic system are independent, the pressure and the temperature are measured in real time through the pressure sensor and the temperature sensor in the operation process of the hydraulic system, the two loops do not interfere with each other, and meanwhile hydraulic oil in the two loops is concentrated together and filtered through the filtering device. Impurities doped in hydraulic oil in the hydraulic system are reduced, the hydraulic system can operate stably, meanwhile, pressure control, temperature measurement and a filtering system are integrally designed, the occupied space is saved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic component technical field, concretely relates to integrated double loop hydraulic control valve. BACKGROUND

[0002] With the progress of our country industrial technology and the rapid development of hydraulic industry, more and and more industries begin to apply and popularize hydraulic technology.

[0003] But with the popularization of hydraulic technology, some small and precise hydraulic power stations become the hot industry needed by the market, therefore the application proposes an integrated double loop hydraulic control valve, integrates the original pressure control, temperature measurement and filtering system of hydraulic system, saves the floor space, reduces hydraulic pipeline, and achieves the advantages of flexible control and convenient pressure regulation. UTILITARY MODEL CONTENT

[0004] The utility model aims at providing an integrated double loop hydraulic control valve to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme, an integrated double loop hydraulic control valve, including valve block, manual control valve, pressure sensor, temperature sensor, filtering device;

[0006] Valve block connects quantitative pump;

[0007] The valve block is provided with main oil circuit, and the main oil circuit is connected with return oil pipeline, and the manual control valve is arranged at the connecting position of the main oil circuit and the return oil pipeline, and the manual control valve is used for controlling the communication and disconnection between the main oil circuit and the return oil pipeline.

[0008] The pressure sensor is arranged on the main oil circuit, and the pressure sensor is used for measuring the pressure value of the hydraulic oil in the main oil circuit.

[0009] The temperature sensor is arranged on the return oil pipeline, and the temperature sensor is used for measuring the temperature value of the hydraulic oil at the return oil pipeline.

[0010] The filtering device is arranged on the return oil pipeline, and the filtering device is used for filtering the impurities mixed in the hydraulic oil in the return oil pipeline.

[0011] Preferably, the valve block is provided with an oil inlet, and the oil inlet is connected with the hydraulic pump through an oil inlet pipe.

[0012] Preferably, the hydraulic pump is connected with a motor.

[0013] Preferably, the manual control valve includes at least two states of on state and off state, and when the manual control valve is in the on state, the main oil circuit and the return oil pipeline are communicated through the manual control valve.

[0014] Preferably, when the manual control valve is in the off state, the main oil circuit and the oil return circuit are disconnected, and the valve block outputs high-pressure oil.

[0015] Preferably, an overflow valve is arranged on the main oil circuit.

[0016] Preferably, the oil return circuit is connected with a cooler for reducing the temperature of the hydraulic oil in the oil return circuit, and the oil return circuit is communicated with an oil tank.

[0017] Preferably, the manual control valve is arranged on the upper portion of the valve block, and the manual control valve is arranged on one side wall of the valve block, the overflow valve is arranged on the upper portion of the valve block, and the overflow valve is staggered with the manual control valve.

[0018] Preferably, two pressure sensors are arranged on the upper portion and the lower portion of the valve block, and the pressure sensors are arranged on one side wall of the valve block.

[0019] Preferably, the temperature sensor is arranged on the lower portion of the valve block, and the temperature sensor is below the manual control valve, and the filtering device is arranged on the lower portion of the valve block.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] The utility model discloses an internal double circuit hydraulic system is arranged, and when operating, manual control valve is used to control, and the handle in manual control valve is rotated, and the main oil circuit and the oil return circuit are disconnected, and the valve block provides high-pressure oil to the outside, and the control equipment is operated.

[0022] The double circuit two-way hydraulic system is independent, and the pressure and temperature are measured in real time through the pressure sensor and the temperature sensor in the operation process of the hydraulic system, two circuits do not interfere with each other, and the hydraulic oil in the two circuits is filtered through the filtering device, the impurities mixed in the hydraulic oil in the hydraulic system are reduced, the hydraulic system can stably operate, the pressure control, temperature measurement and filtering system are integrated, the occupied space is saved, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the structure schematic view of integrated double circuit hydraulic control valve in the utility model.

[0024] Fig. 2 It is the structure schematic view of integrated double circuit hydraulic control valve in the utility model.

[0025] Fig. 3The utility model discloses an integrated double-circuit hydraulic control valve.

[0026] In the drawing: 100, valve block; 200, manual control valve; 300, overflow valve; 400, pressure sensor; 500, temperature sensor; 600, filtering device. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the range protected by the utility model.

[0028] Reference Figs. 1-3 An integrated double-circuit hydraulic control valve, comprising a valve block 100, a manual control valve 200, an overflow valve 300, a pressure sensor 400, a temperature sensor 500, and a filtering device 600.

[0029] The valve block 100 is provided with an oil inlet, which is connected with a hydraulic pump through an oil inlet pipe, and the hydraulic pump is connected with a motor or an engine; when the hydraulic pump is started, hydraulic oil can be fed into the valve block 100, specifically, the hydraulic oil is fed into the oil inlet, and the pressure adjustment can be adjusted by the output power of the quantitative pump (hydraulic pump), and the pressure adjustment can be adjusted by the overflow valve 300.

[0030] The valve block 100 is provided with a main oil way, and the main oil way is provided with the manual control valve 200 at the connection position of the main oil way and a return oil line, and the manual control valve 200 is used for controlling the connection and disconnection between the main oil way and the return oil line.

[0031] Specifically, the manual control valve 200 has at least two states including a connected state and a disconnected state; when the manual control valve 200 is in the connected state, the main oil way and the return oil line are connected through the manual control valve 200, the main oil way is connected with an oil tank through the manual control valve 200, and the valve block 100 stops providing high-pressure oil outside; when the manual control valve 200 is in the disconnected state, the main oil way and the return oil line are disconnected, and the valve block 100 provides high-pressure oil outside.

[0032] The handle in the manual control valve 200 is rotated to disconnect the main oil way and the return oil line, the valve block 100 provides high-pressure oil outside, and the control equipment is actuated; the handle in the manual control valve 200 is rotated to connect the main oil way and the return oil line, the valve block 100 stops providing oil outside, high-pressure oil returns to the oil tank through the manual control valve 200, and at this time, the hydraulic system has the lowest loss and can save energy; the manual control valve 200 is connected in series with the main oil way.

[0033] It should be noted that the main oil circuit is provided with a pressure sensor 400 for measuring the pressure value of the hydraulic oil in the main oil circuit, and the pressure of the hydraulic oil in the main oil circuit is monitored in real time through the pressure sensor 400, and the pressure sensor 400 is connected in parallel with the main oil circuit.

[0034] At the same time, the main oil circuit is provided with an overflow valve 300 for stabilizing the pressure of the hydraulic oil in the main oil circuit and avoiding excessive pressure of the hydraulic oil in the main oil circuit; the overflow valve 300 is connected in parallel with the main oil circuit.

[0035] The temperature sensor 500 is arranged on the oil return pipeline, and the temperature sensor 500 is used for measuring the temperature value of the hydraulic oil at the oil return pipeline, and the temperature of the hydraulic oil in the oil return pipeline can be monitored in real time through the temperature sensor 500 to prevent the temperature of the hydraulic oil from being too high and damaging the hydraulic components; the temperature sensor 500 is connected in series with the oil return pipeline.

[0036] The filter device 600 is arranged on the oil return pipeline, and the filter device 600 is used for filtering the impurities mixed in the hydraulic oil in the oil return pipeline; the filter device 600 is connected in series with the oil return pipeline.

[0037] The oil return pipeline is connected with the cooler, and the cooler is used for reducing the temperature of the hydraulic oil in the oil return pipeline, and the oil return pipeline is communicated with the oil tank.

[0038] The manual control valve 200 is arranged on the upper part of the valve block 100, and the manual control valve 200 is arranged on one of the side walls of the valve block 100, and the overflow valve 300 is arranged on the upper part of the valve block 100, and the overflow valve 300 is distributed staggered with the manual control valve 200.

[0039] The pressure sensor 400 is arranged on the upper part and the lower part of the valve block 100, and the pressure sensor 400 is arranged on one of the side walls of the valve block 100.

[0040] The temperature sensor 500 is arranged on the lower part of the valve block 100, and the temperature sensor 500 is located below the manual control valve 200, and the filter device 600 is arranged on the lower part of the valve block 100.

[0041] Working principle:

[0042] The hydraulic pump is connected with the engine or the motor, and the mechanical energy or the electric energy is converted into hydraulic energy through the engine or the motor to provide high-pressure oil for the control valve.

[0043] The high-pressure oil enters the valve block 100 and is controlled by the overflow valve 300 to adjust the pressure of the hydraulic system, and the pressure inside the hydraulic system can be detected in real time through the pressure sensor 400, and the overflow valve 300 and the pressure sensor 400 are connected in parallel with the main oil circuit.

[0044] The oil liquid is regulated by the overflow valve 300, and then reaches the manual control valve 200, and by rotating the handle, the main oil circuit is connected with the oil return circuit, when the main oil circuit is disconnected with the oil return circuit, the valve block 100 provides high pressure oil to the outside, and the control equipment is in action; when the main oil circuit is connected with the oil return circuit, the valve block 100 stops providing oil to the outside, and the high pressure oil returns to the oil tank through the manual control valve 200, and the hydraulic system has the lowest loss, and energy is saved. The manual control valve 200 is connected in series with the main oil circuit.

[0045] The temperature sensor 500 is connected in parallel with the main oil circuit.

[0046] The hydraulic oil returns through the filtering device 600, and the iron filings, other impurities and the like caused by production, hydraulic oil impact and wear are filtered, and the hydraulic oil is purified. Then the filtering device 600 is connected with the cooler through the valve block 100, and then is connected with the hydraulic oil tank, and the hydraulic oil returns to the hydraulic oil tank after being cooled. The filtering device 600 is connected in series with the main circuit.

[0047] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated dual circuit hydraulic control valve, characterized by, The valve block (100), the manual control valve (200), the pressure sensor (400), the temperature sensor (500), and the filter device (600) are included. The valve block (100) is connected to the quantitative pump. The main oil path is arranged in the valve block (100), and the manual control valve (200) is arranged at the connection position of the main oil path and the oil return pipeline. The pressure sensor (400) is arranged on the main oil path, and is used to measure the pressure value of the hydraulic oil in the main oil path. The temperature sensor (500) is arranged on the oil return pipeline, and is used to measure the temperature value of the hydraulic oil at the oil return pipeline. The filter device (600) is arranged on the oil return pipeline, and is used to filter the impurities mixed in the hydraulic oil in the oil return pipeline.

2. An integrated dual circuit hydraulic control valve according to claim 1, wherein, The oil inlet is arranged on the valve block (100), and the oil inlet is connected to the hydraulic pump through the oil inlet pipeline.

3. An integrated dual circuit hydraulic control valve according to claim 2, wherein, The hydraulic pump is connected to the motor.

4. An integrated dual circuit hydraulic control valve according to claim 1, wherein, The manual control valve (200) has at least two states including the on state and the off state.

5. An integrated dual circuit hydraulic control valve according to claim 4, wherein, When the manual control valve (200) is in the on state, the main oil path and the oil return pipeline are connected through the manual control valve (200).

6. An integrated dual circuit hydraulic control valve according to claim 1, wherein, When the manual control valve (200) is in the off state, the main oil path and the oil return pipeline are disconnected, and the valve block (100) outputs high-pressure oil.

7. An integrated dual circuit hydraulic control valve according to claim 1, wherein The overflow valve (300) is arranged on the main oil path.

8. An integrated dual circuit hydraulic control valve according to claim 1, wherein, The oil return pipeline is connected to the cooler, and the cooler is used to reduce the temperature of the hydraulic oil in the oil return pipeline.

9. An integrated dual circuit hydraulic control valve according to claim 8, wherein, The manual control valve (200) is arranged on the upper part of the valve block (100), and the manual control valve (200) is arranged on one side wall of the valve block (100).

10. An integrated dual circuit hydraulic control valve according to claim 9, wherein, The overflow valve (300) is arranged on the upper part of the valve block (100), and the overflow valve (300) is staggered with the manual control valve (200) in front and back. Two pressure sensors (400) are arranged on the upper part and the lower part of the valve block (100), and the pressure sensors (400) are arranged on one side wall of the valve block (100). The temperature sensor (500) is arranged on the lower part of the valve block (100), and the temperature sensor (500) is located below the manual control valve (200). The filter device (600) is arranged on the lower part of the valve block (100).

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