An energy-saving, pressure-maintaining start-stop device for the hydraulic system

Abstract

An energy-saving, pressure-maintaining start-stop device for the hydraulic system, characterized by: including a support seat, an energy storage device and a control cabinet; The support seat contains an energy storage bracket; the support seat is equipped with a detection bracket on one side of the energy storage bracket; the energy storage device is installed in the energy storage bracket; the lower part of the energy storage device is connected via multiplexer 1 to the pressure measuring device, the pressure relief valve, and multiplexer 2; the pressure measuring device is installed in the detection bracket; multiplexer 2 is connected via pipelines to the working section and the hydraulic station; a one-way valve is located in the pipeline between multiplexer 2 and the hydraulic station; The control cabinet is mounted on the detection bracket; the pressure measuring device and the hydraulic station motor are electrically connected to the control cabinet.

Description

Technical area

[0001] The utility model relates to the technical auxiliary field of the hydraulic system, specifically to an energy-saving pressure-maintaining start-stop device for the hydraulic system. Background technology

[0002] In modern industrial production, the hydraulic system is widely used in CNC machine tools and other equipment, usually CNC machine tools and other equipment include electrical systems, hydraulic systems and mechanical parts.

[0003] The hydraulic station is one of the necessary components of the current hydraulic system for CNC machine tools and hydraulic machinery and equipment. It mainly consists of a hydraulic pump, a motor, and a fuel tank body. When the machine tool is working normally, the hydraulic system must be turned on. However, since the structure of the hydraulic tank must follow the principle that the power of the AC motor is greater than the power of the hydraulic pump, a large amount of electrical energy is consumed when the hydraulic pump motor is turned on, and the energy consumed is considerable.

[0004] In addition, during hydraulic system operation, a large amount of pressurized oil is returned from the relief valve port to the oil tank after the pressure requirement is met, generating a large amount of heat. Due to the high temperature of the oil tank, the viscosity of the oil decreases and internal leakage further increases, resulting in unstable system pressure. It also increases the wear of the oil pump and leads to frequent failure. On the other hand, because the oil temperature is too high and the chemical properties of the oil deteriorate, the hydraulic oil must be replaced frequently, resulting in energy waste. Content of the utility model

[0005] The utility model discloses a technical problem to be solved, namely to overcome the deficiencies of the above-mentioned technology and to provide an energy-saving pressure-maintaining start-stop device of the hydraulic system.

[0006] In order to solve the above-mentioned technical problems, the technical solution of the utility model consists in an energy-saving, pressure-maintaining start-stop device for a hydraulic system: including a support seat, an energy storage device and a control cabinet.

[0007] An energy storage bracket is located on the support seat. The support seat is equipped with a detection bracket on one side of the energy storage bracket. The energy storage device is installed in the energy storage bracket. The lower part of the energy storage device is connected to the pressure measuring device, the pressure relief valve, and the multiplexer 2 via multiplexer 1. The pressure measuring device is installed in the detection bracket. The multiplexer 2 is connected to the work area and the hydraulic station via piping. A one-way valve is located in the piping between the multiplexer 2 and the hydraulic station.

[0008] The control cabinet is mounted on the detection bracket. The pressure measuring device and the hydraulic station motor are electrically connected to the control cabinet.

[0009] The advantages of this utility model over existing technology are: 1. By setting the energy storage function, the hydraulic system pressure can be maintained within the required range within a certain period of time even when the hydraulic station is shut down, thereby simultaneously reducing the power consumption of the hydraulic station. Hydraulically stopping the station can lower the temperature of the hydraulic oil and slow down the aging rate of the hydraulic oil. 2. Through the cooperative setting of the pressure measuring device and the control cabinet, the automatic monitoring of the energy storage can be realized, and the control of the start and stop of the hydraulic station can be realized through the controller, and the pressure required by the hydraulic system for work can be maintained. 3. The pressure-maintaining start-stop device is simple in design and easy to implement. It not only ensures the hydraulic system maintains the pressure required for operation, but also reduces the hydraulic system's power consumption and temperature. This slows down the aging rate of the hydraulic oil, shortens the operating time of the hydraulic station, and reduces component wear. Description with drawings Fig. is a schematic structural diagram of an energy-saving, pressure-maintaining start-stop device for the hydraulic system of the utility model. Fig. is a front view of an energy-saving, pressure-maintaining start-stop device for the hydraulic system of the utility model. Fig. is a schematic diagram 1 of the internal structure of an energy-saving, pressure-maintaining start-stop device for the hydraulic system of the utility model. Fig. is a schematic diagram 2 of the internal structure of an energy-saving, pressure-maintaining start-stop device for the hydraulic system of the utility model. Fig. is a schematic diagram of an energy-saving, pressure-maintaining start-stop device for the hydraulic system of the utility model.

[0010] As shown in the figure: 1. Support seat, 2. Energy storage, 3. Control cabinet, 4. Energy storage bracket, 5. Detection bracket, 6. Multiplexer 1, 7. Pressure measuring device, 8. Relief valve, 9. Multiplexer 2, 10. One-way valve, 11. Cover plate. The specific embodiment

[0011] The utility model is described in more detail below in conjunction with the attached drawings.

[0012] In combination with the attached drawing, an energy-saving start-stop device for the hydraulic system comprises a support seat 1, an energy storage device 2 and a control cabinet 3. During the execution, the support seat 1 is connected to the hydraulic station and the fixed connection between the start-stop device and the hydraulic station is realized.

[0013] The support seat 1 is provided with an energy storage bracket 4, and the support seat 1 is provided with a detection bracket 5 on one side of the energy storage bracket 4. In this embodiment, the detection bracket 5 and the energy storage bracket 4 are arranged in a horizontal T-shaped structure on the support base 1.

[0014] The energy storage device 2 is arranged in the energy storage holder 4. The lower part of the energy storage device 2 is connected to a pressure measuring device 7, a pressure relief valve 8, and a multiplexer 2, 9 via a multiplexer 16. The structural shapes of the multiplexer 16 and the multiplexer 29 can be adjusted according to the actual situation. In this embodiment, the multiplexer 16 is a four-way pipe connection, and the multiplexer 29 is a three-way pipe connection.

[0015] The pressure measuring device 7 is arranged in the detection bracket 5. In particular, the design of the pressure measuring device 7 can be adjusted according to the actual situation. The pressure measuring device 7 is a pressure gauge, a pressure relay, a time relay, and one of them. In this embodiment, the pressure measuring device 7 is a pressure gauge, and the pressure measuring device 7 can monitor the pressure in the energy storage device 2.

[0016] In practice, the pressure relief valve 8 is connected to the hydraulic oil tank via a pipe. Specifically, the hydraulic oil tank is a piece of technology within the hydraulic system. When the pressure is released through the pressure relief valve 8, the hydraulic oil flowing through the pressure relief valve 8 flows back into the hydraulic oil tank.

[0017] The multiplexer 2 9 is connected to the working part or the hydraulic station by a pipeline, and a one-way valve 10 is arranged on the pipeline between the multiplexer 2 9 and the hydraulic station.

[0018] At the time of implementation, the backflow of hydraulic oil supplied from the hydraulic station can be avoided by adjusting the one-way valve 10.

[0019] The described control cabinet 3 is arranged on the detection bracket 5, and the described pressure measuring device 7 and the hydraulic station are all electrically connected to the control cabinet 3. In particular, the described control cabinet 3 can realize the control of the start and stop of the hydraulic station by receiving a pressure signal from the pressure measuring device 7.

[0020] The cover plate 11 is also included, and the cover plate 11 is adapted to the energy storage bracket and the detection bracket 5 to realize the covering of the energy storage bracket and the detection bracket 5 and to realize the protection of the pressure measuring device 7 and the energy storage device 2.

[0021] In the specific implementation of the utility model, the electric motor in the hydraulic station drives the hydraulic oil pump to generate pressure and discharge hydraulic oil. The hydraulic oil is transported to the working part via the one-way valve 10 and the multiplexer 29. At the same time, the excess pressure oil generated by the hydraulic pressure station when supplying the working part enters the energy storage unit 2 through the multiplexer 16 and is simultaneously stored. The described pressure measuring device 7 performs real-time monitoring of the pressure in the energy storage unit 2, and the pressure signal is transmitted to the control cabinet 3.

[0022] When the pressure sensing device 7 detects that the pressure in the energy storage device 2 reaches the upper limit of the working pressure of the hydraulic system, the control cabinet 3 cuts off the power supply of the hydraulic station to stop the hydraulic station at this time.At this time, the adjustment of the one-way valve 10 is performed.In order to avoid the backflow of hydraulic oil, the hydraulic system is in a pressure-holding state, and the pressure force stored in the energy storage device 2 can ensure that the pressure of the hydraulic system remains within a certain range required for work.After a certain period of time, the pressure sensing device 7 detects that the pressure in the energy storage device 2 reaches the lower limit of the working pressure of the hydraulic system, and the control cabinet 3 supplies power to the hydraulic station to realize the work of the hydraulic station, thus ensuring the normal operation of the hydraulic system again.

[0023] By repeatedly repeating the above operations one after another, the oil temperature of the hydraulic oil can be reduced while maintaining the working pressure of the entire hydraulic system required for production, thereby saving energy and reducing workpiece loss.

[0024] If the working part fails and the hydraulic system needs to be repaired, the pressure in the hydraulic system can be relieved by opening the pressure relief valve 8. At this time, the hydraulic oil flowing through the pressure relief valve 8 flows back to the hydraulic oil tank through the pipeline.

[0025] At the same time, during the specific adjustment of this start-stop device, the described energy storage device 2 and the associated piping can be arranged in the hydraulic oil tank of the hydraulic station, forming a built-in structure, and the described pressure measuring device 7 is installed at the hydraulic station, thereby reducing the volume occupancy.

[0026] The utility model and its embodiments have been described above. This description is not limiting. What is shown in the drawings is only one embodiment of the utility model, and the actual structure is not limited to it. In short, if a person of ordinary skill in the art can be inspired by it and, without deviating from the creative purpose of the utility model, can design a structural method and embodiment similar to the technical solution without creativity, they all fall under the protection of the utility model.

Claims

[1] An energy-saving, pressure-maintaining start-stop device for the hydraulic system, characterized by: including a support seat, an energy storage device and a control cabinet; There is an energy storage bracket on the support seat; the support seat is provided with a detection bracket on one side of the energy storage bracket; the energy storage device is installed in the energy storage bracket; the lower part of the energy storage device is connected to the pressure measuring device, the pressure relief valve, and the multiplexer 2 via multiplexer 1; the pressure measuring device is installed in the detection bracket; the multiplexer 2 is connected to the work department and the hydraulic station via pipelines; there is a one-way valve in the pipeline between the multiplexer 2 and the hydraulic station. The control cabinet is mounted on the detection bracket; the pressure measuring device and the hydraulic station motor are electrically connected to the control cabinet. [2] An energy-saving, pressure-maintaining start-stop device for the hydraulic system according to claim 1, characterized by that the pressure relief valve is connected to the hydraulic oil tank via a pipe. [3] An energy-saving, pressure-maintaining start-stop device for the hydraulic system according to claim 1, characterized by that multiplexer 1 is a four-way pipe connection. [4] An energy-saving, pressure-maintaining start-stop device for the hydraulic system according to claim 1, characterized by that Multiplexer 2 is a three-way pipe connection. [5] An energy-saving, pressure-maintaining start-stop device for the hydraulic system according to legal claim 1, characterized bythat the pressure measuring device is a manometer, a pressure relay, a time relay or a pressure sensor. [6] An energy-saving, pressure-maintaining start-stop device for the hydraulic system according to claim 1, characterized by that it further comprises a cover plate adapted to the energy storage bracket and the detection bracket.

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