Delivery cylinder is an important part of the mixing pump and concrete pump. As a vulnerable part of the pump truck, long-term contact with concrete, and non-obvious part of the pump machine, the daily maintenance is easy to neglect! In the construction process of concrete pump, if used improperly, it is easy to lead to premature damage of some parts, which increase the cost of equipment maintenance, and seriously affect the concrete pouring.

How To Improve The Service Life Of The Delivery Cylinder?

Two Points Need To Be Noted:

Piston and delivery cylinder piston is generally made of polyurethane material, elastic, wear-resistant and other advantages. The inner wall of the delivery cylinder is coated wear-resistant material.

Lubrication mode of the piston and the delivery cylinder is automatic lubrication, each pump, lubrication system filling lubricating oil. Pump operator note:

1.the quality of lithium grease, buy the products of regular manufacturers;
2.Often pay attention to the oil level in the lubricating oil tank, whether there is lithium grease;
3.If the lubrication pipeline or oil distributor is blocked, dredge or replace in time.

Concrete conveying in the process of pumping, operators should often “suppress cylinder” operation, namely when the main cylinder piston running to the end, operate the click button, keep 5~8s, to supplement hydraulic oil in the main closed cylinder (for pump that rely on the proximity switch, keep the proximity switch as close to the side of the main cylinder), to make full use of the travel of the conveying cylinder to avoid local wear of the conveying cylinder.

Operators should also pay close attention to the water tank, once the water is found to be cloudy or sand in the water, indicating that the piston may wear, need to replace the piston in time, otherwise the piston and conveying cylinder will be worn seriously. If the water becomes cloudy soon after replacing the new piston, it indicates that the conveying cylinder has worn out and the conveying cylinder needs to be replaced.

If possible, you can judge whether the conveying cylinder is worn out by measuring the cylinder diameter. Usually, the thickness of the chrome plating layer in the inner wall of the cylinder is only (0.2~0.25) mm. When the cylinder diameter increases (0.45~0.55) mm, it is necessary to replace the conveying cylinder.

There is a cleaning water tank between the conveying cylinder and the main oil cylinder, which is filled with water. Many customers think that as long as there is water, they do not need to replace it too often. The main function of water tank is to cool and reduce the temperature caused by the piston rod and conveying cylinder during working; Another is to clean the piston rod and concrete cylinder of impurities. See here, we should understand the importance of often changing the water body in the water tank.

Special note: many customers think that the water tank is better and can be lubricated, in fact, because the oil floats above the water, hindering the heat dissipation effect of the water, especially when the temperature in summer is high, it should be replaced in time.