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The relief valve suddenly fails when the single-column hydraulic press is working
by：WORLD
2022-11-11
The failure of the pressure regulation of the relief valve of the single-arm hydraulic press is that the pressure of the adjustment handle cannot be established, or the pressure does not reach the set value. In addition to the radial tightening of the valve body, there are several reasons for poor pressure regulation, which are explained in detail in this article.
1. The main valve core hole of the single-arm hydraulic press is blocked, and the hydraulic pressure is not notified to the upper chamber of the main valve and the front chamber of the conical valve, and the pilot valve will lose the perception of the pressure of the main valve. Since there is no oil pressure in the upper chamber of the main valve of the single-arm hydraulic press, the elastic force is small, and the main valve becomes a direct-acting relief valve with small elastic force. Unable to build pressure.
The pressure of the single-arm hydraulic press does not meet the requirements of the adjustment value, such as deformation or slow selection of the pressure regulating spring, excessive leakage in the valve or partial wear of a part of the pilot valve.
2. The orifice of the pilot valve seat of the single-arm hydraulic press is blocked, the hydraulic pressure cannot reach the valve, and the same pilot valve is adjusted and destroyed by the pressure of the main valve; after the orifice is blocked, even if the pressure increases or decreases, the conical valve will not open, causing There is no oil flow in the valve, and the oil pressure in the upper and lower chambers of the main spool is equal.
The main spool of the single-arm hydraulic press is closed due to the guidance of the spring force, the overflow does not stop, and the valve front pressure of the overflow valve recovers with the increase of the load.
If you have a need for automatic power press machine mechanical power press, like , and , you need to be able to find a dependable provider who you can trust when necessary.
Shanghai Yingxin World Machinery Co., Ltd. has been a leading server of for many years. Visit the website World Press Machine for quality mechanical power press.
Along the way, Shanghai Yingxin World Machinery Co., Ltd. will face a wide range of challenges. The most successful will show our resolve by working through the challenges and finding ways to improve and grow.
If you need any help in mechanical power press automatic power press machine, Shanghai Yingxin World Machinery Co., Ltd. can help you. We provide the best in class. Our design and services will enable you to create the ideal room that you have always wanted!
Utilizing high technology to manufacture products can afford a fully experience to customers by using mechanical power press.
1. The main valve core hole of the single-arm hydraulic press is blocked, and the hydraulic pressure is not notified to the upper chamber of the main valve and the front chamber of the conical valve, and the pilot valve will lose the perception of the pressure of the main valve. Since there is no oil pressure in the upper chamber of the main valve of the single-arm hydraulic press, the elastic force is small, and the main valve becomes a direct-acting relief valve with small elastic force. Unable to build pressure.
The pressure of the single-arm hydraulic press does not meet the requirements of the adjustment value, such as deformation or slow selection of the pressure regulating spring, excessive leakage in the valve or partial wear of a part of the pilot valve.
2. The orifice of the pilot valve seat of the single-arm hydraulic press is blocked, the hydraulic pressure cannot reach the valve, and the same pilot valve is adjusted and destroyed by the pressure of the main valve; after the orifice is blocked, even if the pressure increases or decreases, the conical valve will not open, causing There is no oil flow in the valve, and the oil pressure in the upper and lower chambers of the main spool is equal.
The main spool of the single-arm hydraulic press is closed due to the guidance of the spring force, the overflow does not stop, and the valve front pressure of the overflow valve recovers with the increase of the load.
If you have a need for automatic power press machine mechanical power press, like , and , you need to be able to find a dependable provider who you can trust when necessary.
Shanghai Yingxin World Machinery Co., Ltd. has been a leading server of for many years. Visit the website World Press Machine for quality mechanical power press.
Along the way, Shanghai Yingxin World Machinery Co., Ltd. will face a wide range of challenges. The most successful will show our resolve by working through the challenges and finding ways to improve and grow.
If you need any help in mechanical power press automatic power press machine, Shanghai Yingxin World Machinery Co., Ltd. can help you. We provide the best in class. Our design and services will enable you to create the ideal room that you have always wanted!
Utilizing high technology to manufacture products can afford a fully experience to customers by using mechanical power press.
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