TM1005110 24V excavator hydraulic pump proportional solenoid valve

The difference between electric proportional valve and solenoid valve

Valve control of flow can be divided into two types:
 

     One is switch control: either fully open or fully closed, the flow rate is either maximum or minimum, there is no intermediate state, such as ordinary electromagnetic through valve, electromagnetic reversing valve, electro-hydraulic reversing valve. The other is continuous control: the valve port can be opened according to the need of any degree of opening, thereby controlling the size of the flow through, such valves have manual control, such as throttle valves, but also electronically controlled, such as proportional valves, servo valves. So the purpose of using proportional valve or servo valve is: to achieve the flow control by electronic control (of course, after structural changes can also achieve pressure control, etc.), since it is throttling control, there must be energy loss, servo valve and other valves are different, its energy loss is greater, because it needs a certain flow to maintain the work of the pre-stage control oil circuit.
Electromagnetic valve (Electromagnetic valve) is the use of electromagnetic

Proportional valve and solenoid valve difference

    Proportional valve is a new type of hydraulic control device. In the ordinary pressure valve, flow valve and direction valve, the proportional electromagnet is used to replace the original control part, and the pressure, flow or direction of the oil flow is controlled remotely according to the input electrical signal continuously and proportionally. Proportional valves generally have pressure compensation performance, and the output pressure and flow rate can not be changed by the load the impact of change.

1, the ordinary valve can not be proportional to the continuous step control, is a pure single action type switch valve, the valve opening direction, opening amount or spring setting force are certain, can not change according to the actual situation.

2, proportional valve is proportional to the continuous step control, according to the actual situation changes in the information collected back to the target automatic compensation control, the valve opening direction, opening amount or spring setting force are followed, to achieve a series of continuous controllable changes in the action.