Jul 14, 2023
Working principle of hydraulic valve block
Hydraulic valve blocks are an indispensable and important component in hydraulic systems, mainly used to control parameters such as fluid flow, pressure, and direction. It can achieve automatic control of hydraulic systems, and prove the efficiency and reliability of hydraulic systems. With the continuous development of technology, the application scope and technical level of hydraulic valve blocks are also constantly improving, which will bring more convenience and development opportunities for hydraulic control in various industries.
The structure of hydraulic valve blocks is usually composed of valve bodies, valve cores, springs, seals, and other parts. The valve body is the main part of the valve block, which is usually made of materials such as cast iron, cast steel, or aluminum alloy, and has good pressure resistance and corrosion resistance. The valve core is the most critical part of the valve block, which can control parameters such as flow, pressure, and direction in the hydraulic system based on changes in control signals. The spring is an auxiliary component of the valve core, which can provide the resetting force of the valve core, thereby ensuring that the valve core can automatically reset when not affected by control signals. The sealing element is another important part of the valve block, which can ensure the sealing performance of the valve block and avoid leakage problems in the hydraulic system.
The working principle of hydraulic valve blocks is usually to control the flow, pressure, and direction parameters in the hydraulic system by controlling the position of the valve core. When the control signal acts on the valve core, the valve core will move to the corresponding position, thereby changing the flow path and flow rate in the hydraulic system. When the control signal disappears, the spring will reset the valve core to its initial position, ensuring the normal operation of the hydraulic system.
The application of hydraulic valve blocks in various hydraulic systems, such as engineering machinery, metallurgical equipment, shipbuilding, aerospace, and other fields. The advantage of hydraulic valve blocks is their high accuracy, reliability, sensitivity, and stability, which can meet various complex hydraulic control requirements.
Due to the wide application of hydraulic valve blocks in industrial production and mechanical equipment, the selection of their materials is particularly important.
The material of hydraulic valve blocks should generally have the following characteristics:
1. Corrosion resistance: Due to the complex nature of liquids in hydraulic systems, which may contain corrosive substances such as acids, alkalis, and salts, the material of hydraulic valve blocks must have strong corrosion resistance.
2. High temperature resistance: The hydraulic system generates high temperatures during operation, and the material of the hydraulic valve block needs to have a certain degree of high temperature resistance to ensure its long-term stable operation.
3. High strength: Hydraulic valve blocks need to withstand significant pressure and impact forces, so their materials must have high strength and wear resistance.
4. Good processability: Hydraulic valve blocks have diverse structures, so their materials need to have good processing performance to facilitate processing and assembly of various shapes and sizes.
The commonly used hydraulic valve block materials include the following:
1. Aluminum alloy: Due to its high corrosion resistance, good processing performance, and light weight, aluminum alloy is widely used in hydraulic valve blocks.
2. Steel: Steel has good strength and hardness, suitable for withstanding harsh environments such as high temperature, high pressure, and impact forces.
3. Brass: Brass has a high density, good compressive strength and toughness, and good corrosion resistance.
4. Stainless steel: Stainless steel has high corrosion resistance and strength, suitable for withstanding special environments such as high temperature, high pressure, and corrosion.
In summary, the material of hydraulic valve blocks should be selected based on specific usage environments and functional requirements, generally requiring corrosion resistance, high temperature resistance, high strength, and good processing performance.
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