Positive-negative integrated conveying system device of multifunctional pump

Abstract

The invention discloses a positive-negative integrated conveying system device of a multifunctional pump, comprising a multifunctional bin pump, a negative pressure ash loading device of the multifunctional pump and a positive pressure conveying device of the multifunctional pump. In the invention, a set of bin pumps of the conveying system device can be connected with a plurality of ash hoppers without an intermediate ash silo; and ash is conveyed to a terminal ash silo at one step, a large amount of materials and equipment can be saved and the discharge speed of the bin pump can be adjusted, thereby the conveying system device is not easy to block the pneumatic conveying system device of the pipe.

Description

technical field [0001] The invention relates to a powder material pneumatic conveying system device, in particular to a large and medium-sized coal-fired power plant pneumatic ash removal system device, and a limestone powder pneumatic conveying system device for a boiler flue gas desulfurization system. Background technique [0002] The ash and slag discharged from the boilers of coal-fired power plants have been developed and utilized as a resource. Therefore, the dry ash of the boiler flue gas dust collector generally adopts the pneumatic ash removal method. Pneumatic ash removal system is difficult to meet the requirements of economy, practicality, reliability and energy saving. The main problems are as follows: [0003] 1. The domestic coal-fired power plants have larger and larger single-unit capacity (such as a single-unit capacity of 1000MW), the increase in the number of ash hoppers for boiler flue gas dust collectors, the increase in ash volume, and the long transp...

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Problems solved by technology

[0002] The ash and slag discharged from boilers in coal-fired power plants have been developed and utilized as a resource. With the continuous increase of the single unit capacity of the generator set and the increase of the transmission distance, the existing pneumatic ash removal system is difficult to meet the requirements of economy, practicality, reliability and energy saving. The main problems are as follows:

[0005]3. The conveying method of all warehouse pumps is to convey the compressed air in the chamber pump mixed with the dry ash and then convey intermittently. It is necessary to transport the dry ash of the first set of chamber pumps The dry ash in the second set of warehouse pumps can only be transported after arriving at the ash warehouse, forming a common law that the conveying distance is inversely proportional to the conveying ash-gas ratio, which is the main reason for the low efficiency of conveying compressed air to convey dry ash

[0007]5. Since it is difficult to control the discharge speed of the existing down-drawing silo pump, it is easy to cause pipe blockage

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