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Electromagnetic proportional control valve is a kind of electric control element, widely used in hydraulic and pneumatic control system. It realizes proportional control of fluid medium through electromagnetic principle, which is characterized by high accuracy, fast response speed and long service life. Below, we will introduce the electromagnetic proportional control valve working principle, structural characteristics, application areas and its advantages.

First, the working principle of electromagnetic proportional control valve

Electromagnetic proportional control valve is mainly composed of electromagnet, valve body, valve spool and other parts. When the electromagnet is energized, magnetic force is generated, and the spool is pushed to move in the valve body through the magnetic field, thus changing the degree of fluid passage, and realizing the proportional control of fluid flow.

Second, the structure of the electromagnetic proportional control valve features

1. solenoid: the use of high-performance magnetic material to ensure strong magnetic suction, improve response speed.
2. valve body: made of high-strength materials, with good pressure resistance, to ensure stable work for a long time.
3. Valve core: made of wear-resistant material, with high hardness and wear resistance, to improve service life.
4. sealing performance: the use of precision machining technology to ensure good sealing performance, to prevent fluid leakage.

Third, the application of electromagnetic proportional control valve

Electromagnetic proportional control valve is widely used in engineering machinery, metallurgical equipment, shipbuilding, agricultural machinery, aviation industry and other fields. It can be used to realize the proportional control of flow, pressure, temperature and other parameters to meet the needs of various control systems.

Fourth, the advantages of electromagnetic proportional control valve

1. High accuracy: realize precise control through electromagnetic principle, and can precisely regulate the fluid flow.
2. Fast response speed: after the electromagnet is energized, it rapidly generates magnetic force to realize fast response.
3. Long service life: made of wear-resistant material, it has high durability and long service life.
4. Wide range of application: applicable to a variety of fluid media, such as oil, water, gas and so on.
5. Convenient commissioning: simple structure, convenient commissioning, easy maintenance.

V. Example applications

Taking the excavator in construction machinery as an example, the electromagnetic proportional control valve is used to control the flow in the hydraulic system of the excavator to realize the precise action of the excavator. By adjusting the current of the electromagnetic proportional control valve, the bucket movement speed and steering angle of the excavator can be accurately controlled, so as to improve the operating efficiency of the excavator.

VI. Precautions

1. Selection: Select the appropriate model of electromagnetic proportional control valve according to the actual demand.
2. Installation: Install correctly according to the installation instructions provided by the manufacturer. 3.
3. Use: Avoid shocks and excessive loads on the electromagnetic proportional control valve during use.
4. Maintenance: Regularly maintain the solenoid proportional control valve by checking the sealing performance and replacing worn parts.

In short, the electromagnetic proportional control valve is an important electrical control element, with high accuracy, fast response speed, long service life and other characteristics. It plays an important role in the hydraulic and pneumatic control system and is widely used in engineering machinery, metallurgical equipment, shipbuilding and other fields. In the process of selection, installation, use and maintenance, you need to pay attention to related matters to ensure the normal operation of electromagnetic proportional control valve.

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