This article mainly introduces:

Costa Rica hydraulic cylinder,ejector cylinder manufacturer,ejector cylinder

(Costa Rica ejector cylinder,produced by Hengyu Group）

ejector cylinder are widely used in Costa Rica，because of clever hydraulic energy conversion，simple structure and reliable operation，excellent temperature resistance.So our company has designed ejector cylinder for customers from Costa Rica.

Introduction to ejector cylinder:

When the ejector cylinder is in use, measures should be added to prevent the intrusion of pollutants. Effective measures should be taken to control the intrusion of pollutants, such as installing high-efficiency air filters in the tank breathing holes, new oil must be filtered, etc., but also must improve the anti-pollution ability of the ejector cylinder itself. In the seriously polluted environment, it is more important to pay attention to, such as the underground oil ejector cylinder should use fluorine rubber (FRM) and nitrile rubber (NBR) dust ring, and the ground mechanical ejector cylinder should use nitrile rubber dust ring; The filter device is added to the oil inlet of the ejector cylinder of the dump truck, construction machinery, work platform and other equipment, and in order to reduce the oil inlet resistance, the flow area should be increased as much as possible, which can effectively reduce the particle pollution from the system.

The difference between the plunger ejector cylinder and the piston ejector cylinder is that the piston in the ejector cylinder is replaced by a shaft plunger, which is used in hydraulic transmission requiring a long mechanical stroke, and can only input pressure oil from one direction, pressurize in a single direction, and form a thrust to push the plunger to move. The return trip of the plunger depends on the plunger itself to fall, and some rely on the spring to push back to the original position. Usually used plunger type ejector cylinder, its inner hole does not need mechanical finishing, as long as the plunger round grinding can be assembled.

The commonly used buffer structure of the ejector cylinder is composed of a piston boss and a ejector cylinder head groove. When the piston moves close to the ejector cylinder head, it gradually enters the groove, and the oil in the groove is extruded through the gap between the boss and the groove, which increases the oil return resistance, produces the braking effect and realizes the buffer. Generally, a buffer mechanism should be used when the pressure is above 10MP.

The viscosity of the working oil used in the ejector cylinder is 29~74mm2/S, and ISO VG46 anti-wear hydraulic oil is recommended. Working oil temperature within the range of -20~80. C. When the ambient temperature and service temperature are low, the oil with lower viscosity can be selected.

Answers to some questions about ejector cylinder:

How to make 4 cylinders balance lifting weight at the same time?
The cost of the synchronous valve is lower, 4 cylinders need 3 synchronous valves, to be precise you can use a synchronous motor, but it is more expensive. There is another way, that is to install a throttle valve in each cylinder, respectively adjust the speed of the cylinder.

Two cylinders have a reversing control, if the load of the two cylinders is not the same, how to ensure their synchronization?
The piston rod of the cylinder is required to extend synchronization: install A shunt collector valve or synchronous motor at port A of the direction control valve, and then connect the two outlets of the shunt collector valve to the rod-free cavity of the two cylinders respectively. It is required that the outlet of the diverter collector valve is connected to the rod cavity of the two cylinders respectively when the piston rod is withdrawn in synchronization. The synchronization performance depends on the quality of the diverter valve and the leakage of the hydraulic system.