The guard plate of the slurry pump is an important part of the slurry pump. Like the sheath and the impeller, it belongs to the flow-through part of the slurry pump. When the slurry pump is running, the guard plate is directly in contact with the slurry. The main function of the guard plate is to cooperate with the sheath to form a semi-closed runner, so that the slag slurry runs in this space. Since the guard plate is parallel to the running direction of the slag slurry, the guard plate has a longer service life than the sheath and impeller.
Guard plate type:
Some slurry pumps such as fractional series slurry pumps 4/3D-AH, ZJL vertical pump and submerged slurry pump have only one guard plate, which is equivalent to the rear guard plate, and the front guard plate is integrated with the sheath during design. Most horizontal slurry pumps have two guard plates, namely the front guard plate and the rear guard plate. The front guard plate is a flow-through component of the slurry pump.

The pump polyurethane parts are directly connected with the mud, which is very important to the service life of the pump. The service life of polyurethane parts is 3-5 times longer than that of rubber materials. Polyurethane liquid receiving parts include impeller, laryngeal mask, frame plate lining, cover plate lining, frame plate lining insert, etc. They are very easy to wear parts because they work on the long-term effects of abrasive and corrosive mud. For the long service life of pump parts, polyurethane materials play an important role here.

Polyurethane (usually abbreviated as PU) is a unique material that combines the elasticity of rubber with the toughness and durability of metal. It enables engineers to replace rubber, plastic and metal with extreme wear resistance and physical properties. Polyurethane can reduce factory maintenance.

Polyurethane has much better abrasion resistance and tear resistance than rubber, while providing higher load-bearing capacity. Compared with plastics, polyurethane has excellent impact resistance, while having excellent abrasion resistance and elastic memory. Moreover, PU is superior to metal parts in weight reduction, noise reduction and wear resistance.

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