Energy-saving oil pressure control system

Abstract

The utility model discloses an energy-saving type oil pressure control system, which relates to the technical field of hydraulic systems, and comprises an oil tank, a servo motor, a driving pump, a check valve, an oil way plate assembly and a pressure accumulator, the interior of the oil tank is used for containing oil, the servo motor is arranged on the top side of the oil tank, and the driving pump is arranged on the oil way plate assembly. The driving pump is arranged in the oil tank and communicates with the oil liquid, the check valve is installed on the top side of the oil tank and communicates with the output end of the driving pump, the input end of the oil way plate assembly communicates with the output end of the driving pump through the check valve, and the output end of the oil way plate assembly communicates with the output end of the oil way plate assembly through the check valve. And the pressure accumulator is mounted on the top side of the oil tank, communicates with a connecting pipeline of the oil way plate assembly and the driving pump and is used for adjusting the pressure in an oil pipeline of the oil way plate assembly, and energy saving in the oil pressure control system is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic system technical field, concretely relates to a kind of energy-saving oil pressure control system. BACKGROUND

[0002] Tool machine is traditional industry, but oil pressure control system connected with tool machine control is continuously improved, and oil pressure control system is through liquid pressure to transfer energy, converts mechanical energy into hydraulic energy, and then realizes accurate control to actuating mechanism by hydraulic element, usually adopts closed-loop control, utilizes signal feedback mechanism to correct oil pressure deviation in real time, realizes high-precision control, and is widely used in industrial field.

[0003] Traditional oil pressure control system usually adopts combination of fixed displacement pump and overflow valve, but the design cannot effectively adjust flow and pressure when load changes, leading to energy waste, and if pressure is not controlled, energy consumption will increase, and equipment life will be shortened. UTILITY MODEL CONTENTS

[0004] The utility model is directed to the prior art defects, and provides an energy-saving oil pressure control system to solve the problems in the above background art.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: an energy-saving oil pressure control system, comprising an oil tank, a servo motor, a drive pump, a check valve, an oil way plate assembly and an accumulator, the inside of the oil tank is used for setting oil, the servo motor is installed on the top side of the oil tank, the drive pump is arranged in the inside of the oil tank and communicates with the oil, the check valve is installed on the top side of the oil tank and communicates with the output end of the drive pump, the input end of the oil way plate assembly communicates with the output end of the drive pump through the check valve, the accumulator is installed on the top side of the oil tank, the accumulator is connected on the connecting pipeline of the oil way plate assembly and the drive pump, and is used for adjusting the pressure in the oil pipeline of the oil way plate assembly.

[0006] The utility model further illustrates that the connecting pipeline of the accumulator and the oil way plate assembly is provided with a pressure gauge.

[0007] The utility model further illustrates that the outer wall side of the oil tank is provided with at least one liquid level meter, and the liquid level meter is connected with the liquid level of the oil.

[0008] The utility model further illustrates that the liquid level meter is connected with an alarm unit.

[0009] The utility model further illustrates that the oil pressure control system further comprises an oil return filter, the output end of the oil way plate assembly communicates with the oil return filter, and one end of the oil return filter communicates with the oil.

[0010] The oil return filter is internally provided with a filter element.

[0011] The accumulator is located at the rear side of the servo motor away from the liquid level meter.

[0012] The oil tank cover is in communication with the oil liquid in the oil tank.

[0013] Compared with the prior art, the utility model has the advantages that: the accumulator and the oil way board assembly are connected through a pipeline, energy can be stored and released, the servo motor does not need to be adjusted all the time, the system pressure is stable, and the accumulator can effectively reduce the no-load energy consumption of the servo motor in the pressure maintaining stage, thereby achieving the energy saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the overhead structure schematic diagram of the utility model Figure 1 ;

[0017] Figure 3 It is the front view structure schematic diagram of the utility model Figure 1 ;

[0018] Figure 4 It is the right view structure schematic diagram of the utility model Figure 1 ;

[0019] Figure 5 It is the pipeline connection schematic diagram of the utility model;

[0020] In the drawing: 1, oil tank; 2, servo motor; 3, drive pump; 4, oil way board assembly; 5, pressure gauge; 6, accumulator; 7, oil return filter; 8, oil tank cover; 9, liquid level meter; 10, check valve. DETAILED DESCRIPTION

[0021] The utility model discloses technical scheme further non-restrictive detailed description with preferable embodiment and its drawing. Obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.

[0022] Please refer to Figures 1 to 5 The utility model provides technical scheme: a kind of energy-saving oil pressure control system, including oil tank 1, the inside of oil tank 1 is used to set oil liquid;The capacity of oil tank 1 is preferably 20L, and the top side of oil tank 1 is equipped with oil tank cover 8, and oil tank cover 8 is communicated with the oil liquid in oil tank 1, and after being opened, it can be used to fill in the oil liquid in oil tank 1, avoid the volatilization and leakage of oil liquid in closed state, and ensure the normal pressure of pipeline under oil pressure control state;

[0023] The outer wall side of oil tank 1 connected with oil liquid is equipped with at least one liquid level meter 9, which can at least be used to monitor and display the level of oil liquid in oil tank 1, to assist users to know the remaining oil quantity and oil tank state, and to ensure safe use.

[0024] In addition, the liquid level meter 9 is connected with the alarm unit to warn abnormal conditions, for example, the abnormal conditions include but are not limited to: ① when the liquid level measured by the liquid level meter 9 is lower than the defined minimum liquid level or the liquid level display is abnormal and no oil filling information is obtained within the set time, the alarm unit will perform the corresponding alarm process to avoid accidents; ② oil leakage detection alarm, for example, when the rotation speed is greater than 1000 rpm and the operation time is exceeded, the alarm unit will perform the alarm process.

[0025] The oil liquid is connected with a drive pump 3 through a pipeline, and the drive pump 3 is arranged in the inside of the oil tank 1, saving the occupied space of the equipment, the drive pump 3 includes but is not limited to a gear pump, the oil liquid suction and discharge process is carried out through the gear engagement process in the inside of the gear pump, the structure is simple and the pressure is stable, and the drive pump 3 is used to provide the execution power of the oil pressure control system.

[0026] The output end of the drive pump 3 is connected with a servo motor 2 and a check valve 10 through a pipeline respectively; the servo motor 2 is installed on the top side of the oil tank 1, and is used to receive pressure feedback signals in the oil pressure control system to control and adjust the oil pressure, so that the drive pump 3 generates corresponding movement to realize flow control; the check valve 10 is installed on the top side of the oil tank 1 and is communicated with the output end of the drive pump 3, and is used to prevent the backflow of oil liquid, to protect the drive pump 3 and avoid the discharge of oil liquid.

[0027] The output end of the driving pump 3 is connected to the oil circuit board assembly 4 through the check valve 10, which includes but is not limited to flow valves, pressure valves, and electromagnetic slide valves. The oil output end of the oil circuit board assembly 4 is connected to at least one execution component, also known as a machine tool, to realize the power output of the oil pressure control system. The output end of the oil circuit board assembly 4 is connected to the oil return filter 7, one end of which is connected to the oil. The oil return filter 7 has a filter core inside for filtering impurities in the returned oil, preventing impurities from causing wear or blockage to the components in the oil circuit control system, thereby prolonging the service life of the components.

[0028] The top side of the oil tank 1 is also provided with a pressure accumulator 6, which is located on the rear side of the servo motor 2 away from the liquid level gauge 9. The pressure accumulator 6 is connected to the connecting pipe of the oil circuit board assembly 4 and the driving pump 3, and is used to adjust the pressure in the oil pipe of the oil circuit board assembly 4. The connecting pipe of the pressure accumulator 6 and the oil circuit board assembly 4 is provided with a pressure gauge 5, which monitors the oil pressure in the pipe in real time. The pressure accumulator 6 stores or releases pressure according to the data measured by the pressure gauge 5 to maintain stable system pressure. By reasonably setting the pressure accumulation parameters, the use of the frequency converter can also be replaced. The pressure limit of the pressure accumulator 6 is set between 275 bar and 350 bar.

[0029] In this embodiment, the driving pump 3 is started, the operation of the machine tool is controlled through the oil circuit board assembly 4, and the oil pressure in the pipeline is maintained between 60 bar and 80 bar through the pressure gauge 5. Before the pressure accumulator is used, the pressure in the pipeline gradually decreases during the operation of the oil pressure control system to drive the machine tool. Once the pressure is lower than 60 bar, the servo motor 2 will start to restore the pressure to 80 bar, and then stop running. When the pressure in the pipeline is lower than 60 bar again, the servo motor 2 starts again, and the process is repeated until the driving operation of the machine tool is completed. After using the pressure accumulator 6, the servo motor 2 first charges the pressure accumulator 6, for example, to 275 bar to 350 bar. During the operation of the driving machine tool, the pressure accumulator 6 releases pressure to maintain the pressure in the pipeline between 60 bar and 80 bar. When the internal pressure of the pressure accumulator 6 decreases to a certain value, for example, 80 bar, the servo motor 2 charges the pressure accumulator 6 again. Therefore, it is not necessary to start the servo motor 2 to maintain or increase the pressure in the pipeline, which significantly reduces the number of starts of the servo motor 2 and prolongs the service life of the servo motor 2. During the pressure maintaining stage, the pressure accumulator 6 can effectively reduce the no-load energy consumption of the servo motor 2, achieving energy saving effect. Compared with the use of the frequency converter, the connection of the pressure accumulator 6 can save energy by 35% to 40%. When the overall system is in use, the power consumption is reduced by about 85% to 95%, and the temperature and noise are significantly reduced.

[0030] In the description of the utility model, need understanding is, the term " upper", " lower", " front", " back", " left", " right" and so on indicated orientation or position relation is based on the orientation or position relation shown in the drawing, only is for the convenience of describing the utility model, and is not indicating or suggesting the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the limitation to the utility model.

[0031] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, but not limit them. Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An energy saving oil pressure control system characterized by comprising: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

2. The energy saving oil pressure control system according to claim 1, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

3. The energy saving oil pressure control system according to claim 2, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

4. The energy saving oil pressure control system according to claim 3, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

5. The energy saving oil pressure control system according to claim 3, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

6. The energy saving oil pressure control system according to claim 5, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

7. The energy saving oil pressure control system according to claim 3, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1).

8. The energy saving oil pressure control system according to claim 1, characterized by: The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). The oil tank (1) is provided with an oil tank cover (8) on the top side, and the oil tank cover (8) is communicated with the oil liquid in the oil tank (1). 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