仓泵又称仓式气力输送泵、气化喷射泵或发送罐，是正压气力输送系统的核心设备，广泛应用于火电厂除灰、建材、冶金、码头、水利水电及建筑工程拌和系统中的粉状物料输送。仓泵是一种在高压下输送粉状物料的密相高压气力输送装置，其输送过程是一个不连续的间歇式正压气力输送过程。气力输送技术在中国起步于20世纪50年代末，60年代以后仓泵正压气力输送技术开始在国内得到应用。1988年ABB公司的正压浓相流态化小仓泵系统进入中国市场，我国在“八五”、“九五”期间组织了气力输送技术和产品的科技攻关。

Warehouse pump, also known as warehouse type pneumatic conveying pump, gasification jet pump or sending tank, is the core equipment of positive pressure pneumatic conveying system, widely used in powder material conveying in ash removal, building materials, metallurgy, docks, water conservancy and hydropower, and construction engineering mixing systems in thermal power plants. Warehouse pump is a dense phase high-pressure pneumatic conveying device that transports powdered materials under high pressure, and its conveying process is a discontinuous intermittent positive pressure pneumatic conveying process. Pneumatic conveying technology started in China in the late 1950s, and after the 1960s, positive pressure pneumatic conveying technology with bin pumps began to be applied domestically. In 1988, ABB's positive pressure dense phase fluidized bed small bin pump system entered the Chinese market, and China organized technological breakthroughs in pneumatic conveying technology and products during the "Eighth Five Year Plan" and "Ninth Five Year Plan" periods.

仓泵的主体是一个能承受一定压力和温度的容器。其核心结构包括泵体、流化板、上引管以及气动进料阀、气动出料阀、进气阀、二次风阀等。流化板设置在泵体下部，压缩空气通过流化板使物料呈流态化状态。上引管与气动出料阀和输灰管连接。各阀门由电磁气动换向阀控制。仓泵结合射流技术与流态化技术，通过压缩空气将流态化物料高速输送至管道，经拉法尔管增压提升动能，实现中长距离气力输送。

The main body of a warehouse pump is a container that can withstand a certain pressure and temperature. Its core structure includes pump body, fluidized bed, upper inlet pipe, pneumatic feed valve, pneumatic discharge valve, inlet valve, secondary air valve, etc. The fluidized bed is set at the lower part of the pump body, and compressed air passes through the fluidized bed to make the material in a fluidized state. Connect the upper guide pipe to the pneumatic discharge valve and ash conveying pipe. Each valve is controlled by an electromagnetic pneumatic directional valve. The warehouse pump combines jet technology and fluidization technology to transport fluidized materials at high speed to pipelines through compressed air. The kinetic energy is increased by the pressure of the Raphael tube, achieving medium to long distance pneumatic conveying.

仓泵的完整工作周期包括以下步骤：首先打开进料阀和排气阀，仓泵在常压下进料，直到水平料位计发出仓满指示信号；然后关闭进料阀和排气阀，打开高压气阀使罐内加压；当达到操作压力后，打开输送空气阀门和卸料阀，物料开始输送；非常后由压力开关、料位计或时间继电器显示输送结束，关闭高压气阀和卸料阀，使全部压缩空气用来清吹输送管道，同时打开排气阀使罐内压力减至常压状态。根据出料口位置的不同，仓泵可分为上出料仓泵和下出料仓泵。仓泵采用全密封、无污染的输送方式，可根据具体地形布置输送管道，实现集中、分散、大高度、长距离输送，输送过程不受气候条件影响。

The complete working cycle of the bin pump includes the following steps: first, open the feed valve and exhaust valve, and feed the bin pump under normal pressure until the horizontal level gauge sends out the bin full indication signal; Then close the feed valve and exhaust valve, and open the high-pressure valve to pressurize the tank; When the operating pressure is reached, open the conveying air valve and discharge valve, and the material begins to be conveyed; Finally, the pressure switch, level gauge, or time relay displays the end of the conveying process. Close the high-pressure air valve and discharge valve to allow all compressed air to be used to blow the conveying pipeline. At the same time, open the exhaust valve to reduce the pressure inside the tank to atmospheric pressure. According to the different positions of the discharge ports, bin pumps can be divided into upper discharge bin pumps and lower discharge bin pumps. The warehouse pump adopts a fully sealed and pollution-free transportation method, and the transportation pipeline can be arranged according to the specific terrain to achieve centralized, dispersed, high height, and long-distance transportation. The transportation process is not affected by climatic conditions.

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