I. Overview
In modern industrial equipment, electric hydraulic pump is one of the key components to achieve mechanical action and energy conversion. In these pumps, rubber seals play an important role in ensuring efficient system operation, extending equipment life and ensuring safe use. Through in-depth understanding and correct use of rubber seals, the performance and reliability of electric hydraulic pumps can be significantly improved. The purpose of this paper is to discuss in detail the characteristics and key functions of rubber seals in electric hydraulic pumps.
Second, the use of characteristics
1. Material selection and diversity
(1) Fluorine rubber (FKM)
Features: Fluorine rubber is a high-performance synthetic rubber, with excellent high temperature resistance, oil resistance and chemical corrosion resistance. It can maintain good elasticity and sealing effect in extreme temperature and chemical environment.
Application: It is widely used in electric hydraulic pumps that need to resist harsh environments, such as high-temperature steam systems, petrochemical equipment, etc.
(2) Nitrile rubber (NBR)
Features: Nitrile rubber has excellent oil resistance, wear resistance and mechanical strength, and has high heat resistance. It is suitable for a variety of oil-based hydraulic media.
Application: Mainly used in general industrial hydraulic system, especially in frequent contact with oil medium occasions.
(3) Silicone rubber (VMQ)
Features: Silicone rubber is known for its excellent resistance to high and low temperatures, and can maintain its stable performance in the temperature range of -60°C to +200°C. In addition, it has good electrical insulation and is non-toxic.
Application: Suitable for hydraulic systems that need to work under extreme temperature conditions, such as food processing equipment, medical equipment, etc.
2. Shape and design
(1) O-ring seal
Features: The O-ring is one of the most widely used sealing elements, praised for its simple design and effective sealing performance. It prevents leakage of liquids and gases and is suitable for a variety of sealing requirements.
Structure and function: The O-ring is usually a circular section, easy to install and replace. It achieves sealing by sealing pressure deformation and is suitable for static and dynamic sealing.
(2) V-type sealing ring
Features: V-type sealing ring has good initial sealing performance and low friction resistance, and can withstand large compressive and tensile forces. It is suitable for applications where high pressure and good sealing performance are required.
Structure and function: The cross section shape of V-shaped sealing ring is V-shaped, which forms a good sealing effect through tight fitting with the shaft or hole, and is suitable for sealing in rotation and reciprocating motion.
3. Compression and adaptation performance
(1) Compression performance
Features: When the rubber sealing ring is subjected to the pressure of the hydraulic system, it can be moderately compressed and maintain a good elastic deformation ability to ensure the durability of the sealing effect. The compression performance directly affects the durability and effect of the sealing ring.
Design requirements: Suitable pre-compression and good resilience design are the key to ensure that the seal ring can still play the best sealing effect under high dynamic conditions.
(2) Adaptive performance
Features: The rubber sealing ring should have a certain degree of adaptability and can maintain its performance under different temperature, pressure and medium changes. This adaptability allows the seal to work properly under a variety of conditions, reducing failures and leaks.
Performance requirements: Excellent hardness and wear resistance, as well as low compression permanent deformation rate are important factors to ensure the adaptability of rubber seals.
4. Temperature and environment adaptability
(1) Temperature adaptability
Features: The rubber seal must be able to adapt to the wide temperature range that the hydraulic system may encounter. In a high temperature environment, the sealing ring should not be easy to age, harden and break; At low temperatures, it is necessary to maintain good elasticity.
Countermeasures: Reasonable selection of rubber materials with excellent temperature resistance, such as fluorine rubber and silicone rubber, and with appropriate sealing design to ensure that the sealing ring can work normally under various temperature conditions.
(2) Environmental adaptability
Features: In addition to temperature adaptability, the sealing ring also needs to deal with various environmental factors, such as moisture, dust, chemical media, etc. It is still necessary to maintain good sealing performance in harsh environments.
Measures: Through surface treatment and material optimization, the resistance to environmental erosion of the sealing ring is enhanced to ensure its long-term stability under complex working conditions.
Three, the role
1. Prevent liquid leakage
(1) Sealing effect
Function: When the electric hydraulic pump works, the hydraulic oil circulates under high pressure. The sealing ring of the hydraulic system is responsible for forming an effective sealing barrier between the piston, cylinder, joint and other components to prevent the leakage of hydraulic oil. Effective sealing can ensure that the internal pressure of the system is stable and improve work efficiency.
Importance: Preventing liquid leakage can not only improve the efficiency of the system, but also avoid energy waste, reduce maintenance costs and reduce environmental pollution.
2. Improve productivity
(1) System optimization
Principle: The high quality sealing ring can minimize liquid leakage, maintain the internal pressure balance of the system, thereby optimizing the liquid flow and energy transfer, and improve the overall work efficiency of the electric hydraulic pump.
Performance: By reducing the internal energy loss of the system and optimizing the flow of hydraulic oil, improve the efficiency of the equipment and reduce energy consumption.
(2) Dynamic sealing
Performance: In the dynamic seal, the sealing ring can effectively resist the wear particles and impurities in the hydraulic oil, reduce the damage to the equipment, and improve the stability and efficiency of the system.
3. Reduce noise and vibration
(1) Reduce friction
Principle: In the electric hydraulic pump, the sealing ring can significantly reduce the friction between the moving parts, which is an important measure to reduce the working noise and equipment vibration. Good sealing performance ensures smooth movement between components and reduces unnecessary mechanical friction.
Effect: With excellent sealing ring design, the noise and vibration of the equipment can be effectively reduced during operation, and the safety and comfort of the overall operating environment can be improved.
(2) Noise reduction design
Measures: The use of rubber material with low friction coefficient and well-designed sealing ring structure can not only improve the sealing effect, but also play a significant noise reduction effect while ensuring the sealing.
4. Extend the service life of the device
(1) Leakage prevention and oil leakage
Function: The effective sealing ring can prevent the leakage of hydraulic oil, thereby reducing the mechanical wear and failure of the equipment due to the leakage of oil. Long-term stable sealing can significantly extend the service life of the equipment.
Maintenance: Regular inspection and replacement of worn seals and timely repair of small leakage problems are key measures to extend the service life of electric hydraulic pumps.
(2) Reduce wear
Function: By reducing friction and wear between moving parts, the sealing ring effectively extends the service life of other key components in the hydraulic system (such as pistons, cylinders, etc.).
Effect: The selection of rubber materials with strong wear resistance and appropriate sealing design can greatly reduce the mechanical wear of the equipment and extend the overall system life.
5. Ensure security
(1) High pressure environment safety
Challenges: Electric hydraulic pumps often work in high-pressure environments, once the seal fails, it may lead to high-pressure liquid leakage, resulting in equipment damage, personnel injury and other major safety accidents.
Measures: High quality rubber seals can maintain an effective seal in high-pressure environments, prevent liquid leakage, and ensure the safety of operators and equipment.
(2) Prevent accidents
Function: Through effective sealing, the potential harm caused by abnormal high pressure and liquid injection is avoided, and the operation safety and equipment reliability are improved.
Prevention: The selection of reliable sealing materials and design, regular maintenance and testing, is an important means to prevent abnormal problems in the operation of equipment.
Iv. Summary
Rubber seals play a vital role in the electric hydraulic pump, through its excellent material properties, precision design and a variety of applications, not only to ensure the efficient operation of the hydraulic system, but also greatly extend the service life of the equipment, improve the overall safety of operation. Choosing the right rubber material and design, regular maintenance and replacement, is a necessary condition to ensure the long-term stable operation of the electric hydraulic pump. With the continuous progress of technology, the future rubber sealing ring will be more durable and environmentally friendly, providing a strong guarantee for the efficient and safe operation of the hydraulic system. Therefore, in-depth understanding and correct use of rubber seals is of great significance for improving the comprehensive performance of electric hydraulic pumps.