Rexroth solenoid valves consist of solenoid coils and magnetic cores, which are valve bodies with one or more holes. When the coil is energized or de-energized, the operation of the core causes the fluid to pass through the valve body or be cut off, changing the direction of the fluid. Electromagnetic components are composed of fixed cores, moving cores, coils and other components; The valve body is composed of a sliding valve core, a sliding valve sleeve, a spring base, etc. The solenoid coil is mounted directly on the valve body, which is enclosed in a sealed tube for a simple and compact combination.
Characteristic analysis of Rexroth solenoid valves:
Action, low power, light appearance.
The response time can be as short as a few milliseconds, and even the solenoid valve can be controlled within a few tens of milliseconds. Due to its self-contained circuit, it is more responsive than other automatic control valves. A properly designed coil consumes very little power and is an energy-efficient product; It can also trigger the action to automatically maintain the valve position, and there is no power consumption at all. Small size, space-saving, lightweight and beautiful.
The system is simple, easy to connect to a computer, and the price is low.
It is simple in structure and inexpensive, and easier to install and maintain than other types of actuators such as control valves. More obviously, it consists of an automatic control system and is less expensive. Since the solenoid valve is controlled by a switching signal, it is very convenient to connect with an industrial control computer. In today's era of widespread computers and sharp price drops, the advantages are even more obvious.
The external leakage is blocked, the internal leakage is easy to control, and it is safe to use.
Internal and external leaks are a factor that endangers safety. Other automatic control valves typically extend out of the stem and are controlled by electric, pneumatic, and hydraulic actuators to control the rotation or movement of the spool. All of these need to address external leakage from the dynamic seal of the long-acting stem. Only the solenoid valve acts on the iron core sealed in the magnetic isolation sleeve with electromagnetic force, and there is no dynamic seal, so the external leakage is easy to block. The torque control of the electric valve is not easy, and it is easy to cause internal leakage, and even pull off the stem head; The structure is easy to control internal leakage until it is zero. Therefore, it is particularly safe to use and is particularly suitable for corrosive, toxic or high and low temperature media.
Rexroth's products are unique, especially Rexroth solenoid valves, because on the world market there is currently no other brand that can offer its customers all the transmission and control technology, specialization and integration.
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1. Constant pressure overflow: In the throttling adjustment system of the quantitative pump, the fixed pump provides a constant flow rate.
2. When the system pressure increases, the flow demand decreases.
3. At this time, the safety valve is opened, so that the excess flow is returned to the oil tank to ensure the inlet pressure of the safety valve.
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Rexroth hydraulic pump - piston pump selection precautions
1. Determine the pressure
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2. Determine the flow rate
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Rexroth proportional valves – application considerations for proportional valves
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Features of electrical proportional valves – Rexroth
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Rexroth Hydraulics common model series
A10VSO series: A10VSO18, A10VSO28, A10VSO45, A10VSO71, A10VSO100, A10VSO140
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Rexroth solenoid valves are common faults
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Rexroth solenoid valve power conditions and application industry
Power condition
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Disassembly and cleaning steps for Rexroth hydraulic valves
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