Supply 2015 Shaanxi electro-hydraulic double push rod flat gate valve

An overview series of electro-hydraulic push rod flat gates are suitable for reciprocating push-pull linear motion or reciprocating rotation at a certain angle. They can be used as the main control equipment for the flow and transportation of powder, crystal, granular materials and small pieces of materials. They can also be used for long-distance and high-altitude hazards. area, and can be connected to a computer network for centralized program control. Now it is widely used in metallurgy, mining, coal, electric power machinery, food, cement, chemical industry, water conservancy, transportation and other industries. It is an indispensable universal power source.
Two Principles and Functions
Working Principle The electro-hydraulic push rod uses an electric motor as the power source, and the electric motor rotates forward and reverse, so that the hydraulic oil outputs pressure oil through the two-way gear pump, and is sent to the oil manifold through the oil manifold. The working cylinder realizes the reciprocating motion of the piston rod.
Overload automatic protection function When the electro-hydraulic push rod is working, if the external force on the piston rod exceeds the rated output force or the piston has reached the end point, the motor is still rotating. At this time, the oil pressure in the oil circuit will increase to the set pressure. , the relief valve overflows quickly and accurately to achieve automatic overload protection. Although the motor is rotating, it will not burn out.
Self-locking function A pressure self-locking mechanism is designed in the oil circuit integrated block of the electro-hydraulic push rod. When the motor stops rotating, the piston rod immediately stays in a certain position, and the pressure oil is in a pressure-maintaining state.
The speed can be adjusted steplessly within the rated speed range according to user requirements.
The push-pull force can be continuously adjusted within the rated output force range according to user requirements.
The stroke can be adjusted steplessly within the rated stroke range according to user requirements.
Three comparisons with similar products
Compared with electric push rods, electric actuators, hydraulic cylinders and cylinders, electro-hydraulic push rods have the following advantages
It has reliable overload automatic protection performance, even if it is overloaded or When running to the end of the stroke, the motor will still run normally without burning or damaging other parts. Electric push rods and electric actuators are not comparable.
Electro-hydraulic push rods can be started with load, but electric push rods and electric actuators are difficult to start.
The push-pull force of the same electro-hydraulic push rod can be infinitely adjusted within its rated push-pull force range, so the driving force range is wide, which is not possible with electric push rods and cylinders.
When the thrust and speed are the same, the electric energy consumed by the electro-hydraulic push rod is half that of the electric push rod and electric actuator.
The electro-hydraulic push rod adopts full hydraulic transmission, which is sensitive in action and smooth in operation. It can effectively slow down the external impact force and control the stroke accurately, which cannot be achieved by cylinder electric push rod and electric actuator
Electro-hydraulic The push rod adopts a mechanical, electrical and hydraulic integrated fully enclosed structure, and the working oil circuit circulates in a pressureless closed steel cylinder. It is small in size, does not leak oil, and is easy to install and maintain. In harsh environments, it does not absorb dust or water and does not corrode inside. Its service life is longer than that of cylinder electric pushrod electric actuators.
Investment in a small cylinder requires the construction of an expensive air compressor station, and the pneumatic pipe is prone to leakage, unstable air pressure, and high noise. Hydraulic cylinders require a hydraulic station, while electro-hydraulic actuators only need to be connected to the power supply to be used.
Easy to maintain. Under special circumstances, the electro-hydraulic push rod only needs to be replaced, while the hydraulic cylinder needs to slowly identify the cause of the failure and then conduct careful repairs, which will affect the normal operation of the entire work.
Four model preparation rules
┬┬┬┬┬
│┈│││
││││└────────nominal pressure
│ ││└───────────Flange port size
││└─────────────Gate valve
│└───── ─────────Tablet type
└───────────────── Electro-hydraulic actuator drive
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