Motor driven oil pump

Motor driven oil pump, hydraulic oil output, push the plunger withhold tanks forward movement of the plunger, the two inner cone on the front cylinder head cover to promote symmetrical cone mold base radial contraction realize module hose withhold. When the contraction reached the scale is set value, withholding automatically stop solenoid valve for back, hydraulic oil into the two open-cylinder, push the plunger withhold reverse movement, mold base module driven recovery in the action of the spring.
Installation and commissioning
1. Handling: The hydraulic valve block should be used to move the truck or carrying bars, body allowed to tilt. Forbidden to lift the lock and scale site.
2. Installation: The machine required level fixed on a solid foundation, and for ground handling.
3. Filling: open the case, adding 60 liters fuel tank 46 hydraulic oils.
4. Electrical connection: Plug the power cord connected to the hydraulic valve manifold provides power to move the motor to observe rotation, motor rotation direction should be consistent with the pump referred.
5. Check the ruler: ruler located cylinder front end cap, shrink sleeves for adjusting the amount withheld size. Clockwise adjustment, reducing the amount of shrinkage; counterclockwise to adjust the amount of shrinkage increases. Scale base by spring force three screws on the pressure in the cylinder cover, hand pulling the ruler (vertical cylinder end face direction), the scale base should be flexible to leave the cylinder cover, after the release, by the spring force in the cylinder automatic clamping on. Before the start of withholding, you should carefully check the scale expansion is flexible. The ruler can not use screws on the fuel tank, otherwise it will damage the ruler.

Sequence valve works it?

Sequence valve works it?
How it works:
According to the working principle and structure, sequence valve direct-acting and pilot sub-type categories; by pressure control mode, the sequence valve has internal and external control of the points. In the sequence valve installed in a one-way valve, can be called a reverse flow check valve composite sequence valve. Generally, the valve use more.
Functions and applications:
The basic function is to control the sequence hydraulic valve block actuators multiple sequential actions, depending on their functions, called sequence valve, back pressure valves, relief valves and balancing valves. Relief sequence valve performance and essentially the same, but because of the different functions of the sequence valve as well as its special requirements:
(1) In order to achieve accurate actuator action sequence, the order requires high precision pressure regulator valve, the deviation is small;
(2) the accuracy of the order of actions in order to require a small amount of leakage within the aluminium valves is closed;
(3) For one-way sequence valve, pressure loss and requires reverse positive pressure loss values should be compared with the school
       The main role of sequence valve are:
(1) controlling the operation sequence of the plurality of elements;
(2) for packing loop;
(3) to prevent the weight of the free-fall and cause cylinder piston do with balancing valves;
(4) with external control sequence valves do unloading valves, pump unloading;
(5) with internal sequence valve for back pressure valve.