Gantry Type Crane Sand Suction Machine

The Gantry-Type Sand Suction Machine, also known as a Bridge-Type Sand Suction Machine, is primarily used in aeration grit chambers of municipal wastewater treatment plants. Municipal wastewater is collected through sewer networks and conveyed to treatment plants, inevitably carrying a significant amount of sand and grit. Grit chambers are therefore necessary to separate this material. Common types of grit chambers include cyclone grit chambers and aeration grit chambers.

The machine mainly consists of a gantry drive device, a scum removal device, a sand suction system, a rail system, and an electrical control system.

The working principle of the gantry-type sand suction machine is similar in structure to that of a gantry-type pump suction dredger. The machine travels back and forth along the rails under the action of the drive device. During its movement, the sand suction system operates simultaneously, pumping the settled sand and grit from the grit hopper to a grit classifier. The scum removal device, guided by a mechanical limit mechanism, skims floating scum into a collection container for periodic removal as the gantry moves.

The sand lifting method employed by the gantry-type sand suction machine is pump-based. Given the high abrasiveness of sand and grit in wastewater, the selected pump must be highly wear-resistant, typically a submersible sewage pump or a submerged pump.

1.Reciprocating sand suction and scum skimming, offering high efficiency and a simple structure.

2.Employs a vortex-type low-head submersible pump for sand suction, eliminating the need for priming. The pump is clog-resistant, wear-resistant, safe, and reliable.

3.Unidirectional skimming ensures a cleaner tank surface.

4.The grit is cleaned of organic matter through aeration and circulation, resulting in odorless discharge.

5.The equipment is easy to operate and can be controlled directly either locally or remotely.