Slurry pump with cleaning device

Abstract

The invention belongs to the technical field of mechanical equipment, and particularly relates to a slurry pump with a cleaning device. The slurry pump comprises a slurry pump, a buffer tank and a vacuum pump, wherein a slurry sucking pipe which is connected with the inlet of the slurry pump communicates with an ash residue pond; an outlet valve is arranged at the outlet of the slurry pump; a material sucking pipeline is connected to the bottom of the buffer tank; a first valve is arranged on the material sucking pipeline; the other end of the material sucking pipeline is connected with the slurry sucking pipe; the vacuum pump communicates with the top of the buffer tank through a connection pipeline; a second valve is arranged on the connection pipeline; an emptying pipe and an emptying valve are also arranged on the connection pipeline; one end of a material blanking pipe provided with a material blanking valve is connected to the bottom of the buffer tank; and the other end of the material blanking pipe communicates with the ash residue pond. The pump priming device of the slurry pump is simple in structure and convenient for operation; and an original check bottom valve pump priming method for the slurry pump is replaced by a vacuumizing pump priming mode, so that the defect that pump priming cannot be performed because a bottom valve is not sealed tightly is thoroughly solved, and meanwhile, frequent temporary emergency maintenance work caused by pump stopping is also avoided.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, in particular to a slurry pump with a cleaning device. Background technique [0002] Most of the traditional ash tank slag discharge equipment uses a slurry pump, and the slurry pump generally needs to be primed before it is turned on. In the existing slurry pump filling device, a one-way bottom valve is arranged at the suction port of the slurry pump, and the pump is filled from the inlet of the slurry pump before starting the pump. The one-way bottom valve at the suction inlet of this slurry pump filling device has design defects, and frequent failures occur when the slurry pump system is repeatedly started or stopped, making the slurry pump system unable to operate stably for a long time. [0003] The overhaul found that the main problems of the device were: after the ash particles in the medium entered the suction pipe, they were stuck on the sealing surface of the bottom valve,...

AI Technical Summary

Problems solved by technology

The one-way bottom valve at the suction inlet of this slurry pump filling device has design defects, and frequent failures occur when the slurry pump system is repeatedly started or stopped, making the slurry pump system unable to operate stably for a long time

[0003] The overhaul found that the main problems of the device were: after the ash particles in the medium entered the suction pipe, they were stuck on the sealing surface of the bottom valve, so that the bottom valve was not closed tightly, and the pump could not be filled; Severe fouling and other reasons, the bottom valve is stuck after the pump is stopped, cannot be opened and closed normally, and the pump cannot be primed; the suction port is severely blocked, resulting in a sharp increase in the local resistance loss of the suction port, and a decrease in the pressure of the suction port, resulting in the failure of the slurry pump to pump. liquid

[0004] Since the slurry pump cannot be filled or pressurized normally, it often threatens the stable operation of the system. The only way to do it is to temporarily repair it. It is necessary to use fitters and lifting workers to cooperate with the dismantling of the inlet pipeline of the slurry pump, and occupy a gray bucket truck to assist in lifting. Go to the side of the slag pool, clean up foreign matter such as ash and slag at the bottom valve, and replace the gasket

The maintenance process is time-consuming and labor-intensive, taking up a lot of manpower and material resources, and there are great safety hazards in the operation in the slag pool, and it is even more difficult to work in winter

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