A hydraulic system specifically for foaming machines

Abstract

This utility model discloses a hydraulic system specifically for a foaming machine, comprising: an oil tank, on the upper surface of which are provided an oil filler port, a return oil filter, an oil pump assembly, a liquid level and temperature sensor, a pressure gauge, and an oil passage block; on the side of the oil tank are provided an oil level gauge, an air cooler, and a junction box; the oil pump assembly is connected to the oil passage block via oil pipes; the oil passage block is connected to an overflow valve; the overflow valve is connected to a second accumulator and an air cooler; the air cooler is connected to the return oil filter via pipes; and a first solenoid directional valve, a check valve, and a second solenoid directional valve are also installed on the oil passage block. This utility model, by setting up a first accumulator and a second accumulator, effectively absorbs pressure pulsations and compensates for flow, ensuring that the system maintains stable pressure even under load changes, thus improving foaming quality.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic system technology, specifically a hydraulic system for foaming machines. Background Technology

[0002] Currently, foaming machines place high demands on the stability, response speed, and temperature control capabilities of their hydraulic systems during production. While existing technologies possess basic hydraulic transmission functions, the following problems still exist: Large system pressure fluctuations: During frequent start-stop or load changes, the pressure of traditional hydraulic systems is unstable, which affects foaming quality and equipment lifespan. Inaccurate oil temperature control: The lack of an effective oil temperature monitoring and cooling linkage mechanism can easily lead to excessively high oil temperature, accelerate oil aging, and affect system reliability; Low energy utilization: The system does not have an accumulator or the accumulator is not configured properly, which makes it impossible to effectively recover and utilize hydraulic energy, resulting in energy waste; Maintenance is inconvenient: the hydraulic components are scattered, the oil circuit is complex, and the inspection and troubleshooting are difficult.

[0003] Therefore, we propose a dedicated hydraulic system for foaming machines to address the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic system specifically for foaming machines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic system for a foaming machine, comprising: an oil tank, wherein an oil filling port, a return oil filter, an oil pump assembly, a liquid level and temperature sensor, a pressure gauge and an oil circuit block are provided on the upper surface of the oil tank, and an oil level gauge, an air cooler and a junction box are provided on the side of the oil tank; The oil pump assembly is connected to the oil manifold block via an oil pipe. The oil manifold block is connected to the overflow valve. The overflow valve is connected to the second accumulator and the air cooler. The air cooler is connected to the return oil filter via a pipeline. The return oil filter is connected to the oil tank via a pipeline. The oil circuit block is also equipped with a first electromagnetic directional valve, a check valve, and a second electromagnetic directional valve. The first electromagnetic directional valve is connected to a pressure sensor and a first accumulator through a pipeline. The first accumulator is connected to a pressure relief valve, and the pressure relief valve is connected to an overflow valve through a pipeline.

[0006] Preferably, the oil pump assembly has its suction port located inside the oil tank, and an oil suction filter is installed at the suction port.

[0007] Preferably, the oil pump assembly mainly consists of a motor-driven pump body, and the oil pump assembly draws hydraulic oil from the oil tank and supplies it to the oil circuit block.

[0008] Preferably, the main body of the liquid level and temperature sensor is inserted into the oil tank.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a first accumulator and a second accumulator, pressure fluctuations are effectively absorbed and flow is compensated, ensuring that the system can maintain stable pressure when the load changes, thereby improving the foaming quality; 2. By setting up a first accumulator and a second accumulator, pressure fluctuations are effectively absorbed and flow is compensated, ensuring that the system can maintain stable pressure when the load changes, thereby improving the foaming quality; 3. An integrated oil circuit block design is adopted, which centrally arranges core components such as electromagnetic directional valves and check valves, simplifying the pipeline structure and facilitating installation, commissioning and maintenance; 4. Equipped with an overflow valve, a pressure relief valve, and a pressure sensor, it provides dual protection against overpressure with automatic overpressure relief and manual emergency pressure relief, ensuring safe system operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Rear view; Figure 3 This is a partially enlarged view of the oil passage block in this utility model; Figure 4 This is a schematic diagram of the oil circuit of this utility model.

[0011] In the diagram: 1. Oil tank; 2. Filler neck; 3. Oil level gauge; 4. Suction filter; 5. Return filter; 6. Oil pump assembly; 9. Liquid level and temperature sensor; 10. Oil pipe; 11. Pressure gauge; 12. Oil manifold block; 13. First solenoid directional valve; 14. Check valve; 15. Second solenoid directional valve; 16. First accumulator; 17. Pressure sensor; 18. Pressure relief valve; 19. Second accumulator; 20. Air cooler; 22. Overflow valve; 23. Junction box. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1-4This utility model provides a technical solution: a hydraulic system for foaming machines, including: an oil tank 1, an oil filling port 2, a return oil filter 5, an oil pump assembly 6, a liquid level and temperature sensor 9, a pressure gauge 11 and an oil circuit block 12 on the upper surface of the oil tank 1, and an oil level gauge 3, an air cooler 20 and a junction box 23 on the side of the oil tank 1. The oil pump assembly 6 has its suction port located inside the oil tank 1, and an oil suction filter 4 is installed at the suction port. The oil pump assembly 6 is connected to the oil circuit block 12 through the oil pipe 10. The oil pump assembly 6 is mainly composed of a pump body driven by a motor. The oil pump assembly 6 draws hydraulic oil from the oil tank 1 and supplies it to the oil circuit block 12. The oil circuit block 12 is connected to the overflow valve 22, the overflow valve 22 is connected to the second accumulator 19 and the air cooler 20, the air cooler 20 is connected to the return oil filter 5 through the pipeline, and the return oil filter 5 is connected to the oil tank 1 through the pipeline. The hydraulic oil at the overflow valve 22 and the hydraulic oil in the second accumulator 19 return to the oil tank 1 through the air cooler 20 and the return oil filter 5. The air cooler 20 works with the liquid level and temperature sensor 9 to cool and control the temperature of the hydraulic oil. The main body of the liquid level and temperature sensor 9 is inserted into the oil tank 1 to monitor the liquid level and temperature of the hydraulic oil in the oil tank 1 in real time.

[0014] The oil circuit block 12 is also equipped with a first solenoid directional valve 13, a check valve 14, and a second solenoid directional valve 15. The first solenoid directional valve 13 is connected to a pressure sensor 17 and a first accumulator 16 through a pipeline. The first accumulator 16 is connected to a pressure relief valve 18, and the pressure relief valve 18 is connected to an overflow valve 22 through a pipeline.

[0015] Working principle: When the special hydraulic system for foaming machine is working, the oil pump assembly 6 operates. The oil pump draws hydraulic oil from the oil tank 1 through the oil suction filter 4 and delivers the pressurized oil to the oil circuit block 12 through the oil pipe 10. The oil circuit block 12 serves as the hydraulic control center. It controls the flow of oil through the first solenoid directional valve 13 and the second solenoid directional valve 15 to realize the action control of actuators such as hydraulic cylinders or hydraulic motors. When the system is working, the first accumulator 16 and the second accumulator 19 play the roles of storing energy, buffering pressure fluctuations and supplementing system flow, so as to ensure the stability of hydraulic system pressure. Pressure sensor 17 monitors system pressure in real time and feeds back to control system via electrical signal. When system pressure exceeds set value, overflow valve 22 opens and returns excess oil to oil tank 1 after being cooled by air cooler 20 and filtered by return oil filter 5, thus preventing excessive system pressure. The air cooler 20 works in conjunction with the liquid level and temperature sensor 9 to control the temperature of the hydraulic oil, ensuring that the oil temperature is within a reasonable range and extending the service life of the hydraulic oil and equipment. The pressure relief valve 18 can be manually depressurized during system maintenance or in an emergency to ensure operational safety. The entire system is integrated and controlled through the electrical control unit junction box 23 to achieve automated operation. It features fast response, high stability, energy saving and high efficiency, and is particularly suitable for industrial equipment such as foaming machines that have high requirements for the reliability of hydraulic systems.

[0016] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dedicated hydraulic system for a foaming machine, comprising: The oil tank (1) is characterized in that: the upper surface of the oil tank (1) is provided with an oil filling port (2), a return oil filter (5), an oil pump assembly (6), a liquid level and temperature sensor (9), a pressure gauge (11) and an oil circuit block (12), and the side of the oil tank (1) is provided with an oil level gauge (3), an air cooler (20) and a junction box (23); The oil pump assembly (6) is connected to the oil circuit block (12) via the oil pipe (10), the oil circuit block (12) is connected to the overflow valve (22), the overflow valve (22) is connected to the second accumulator (19) and the air cooler (20), the air cooler (20) is connected to the return oil filter (5) via the pipeline, and the return oil filter (5) is connected to the oil tank (1) via the pipeline; The oil circuit block (12) is also equipped with a first electromagnetic directional valve (13), a check valve (14) and a second electromagnetic directional valve (15). The first electromagnetic directional valve (13) is connected to a pressure sensor (17) and a first accumulator (16) through a pipeline. The first accumulator (16) is connected to a pressure relief valve (18), and the pressure relief valve (18) is connected to an overflow valve (22) through a pipeline.

2. A dedicated hydraulic system for a foaming machine according to claim 1, characterized in that, The oil pump assembly (6) has its suction port located inside the oil tank (1), and an oil suction filter (4) is installed at the suction port.

3. A dedicated hydraulic system for a foaming machine according to claim 2, characterized in that, The oil pump assembly (6) is mainly composed of a motor-driven pump body. The oil pump assembly (6) draws hydraulic oil from the oil tank (1) and supplies it to the oil circuit block (12).

4. A foamer specific hydraulic system according to claim 1, wherein, The main body of the liquid level and temperature sensor (9) is inserted into the oil tank (1).

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