What is the difference between rubber concrete piston and polyurethane concrete piston?

The sealing pistons used by existing concrete pump trucks in the market are mostly polyurethane and rubber materials. Because of their design defects and the characteristics of the material itself, they are not suitable for working under the working condition of pumping cement by concrete pump trucks. In addition, due to the exhaustion of resources, the sand used in the construction market is machine-made sand, because the water angle of machine-made sand is particularly sharp, which accelerates the failure time of polyurethane piston or rubber piston. The technology adopted is to wrap the base fiber cloth on the outer surface of the rubber body to improve the wear resistance of the piston itself, but the rubber outer layer is completely wrapped with fiber cloth, which loses the elasticity and sealing of the piston itself, resulting in instability in the use process, and the fiber cloth at the cutting position is easy to delaminate and crack the rubber body.

Technical realization elements:

The utility model provides a cloth-clamping piston sealing element aiming at the shortcomings of the prior art. ..

The technical scheme of the utility model for solving the above technical problems is as follows:

A cloth-clamped piston seal comprises a piston body, wherein the top surface of the piston body is provided with a groove and cloth fixedly connected with the outer surface of the piston body and the groove.

A cloth-clamped piston seal comprises a piston body, wherein the top surface of the piston body is provided with a convex ring, and the outer surfaces of the piston body and the convex ring are provided with cloth fixedly connected.

Preferably, the annular convex sealing ring is arranged below the piston body.

Preferably, there are more than two sealing rings.

Preferably, the height of the sealing ring is at least 5 mm..

Preferably, the depth of the groove is at least 5 mm..

Preferably, the height of the convex ring is at least 5 mm..

Preferably, the piston body is made of rubber.