倉泵又稱(chēng)倉式氣力輸送泵、氣化噴射泵或發(fā)送罐，是正壓氣力輸送系統的核心設備，廣泛應用于火電廠(chǎng)除灰、建材、冶金、碼頭、水利水電及建筑工程拌和系統中的粉狀物料輸送。倉泵是一種在高壓下輸送粉狀物料的密相高壓氣力輸送裝置，其輸送過(guò)程是一個(gè)不連續的間歇式正壓氣力輸送過(guò)程。氣力輸送技術(shù)在中國起步于20世紀50年代末，60年代以后倉泵正壓氣力輸送技術(shù)開(kāi)始在國內得到應用。1988年ABB公司的正壓濃相流態(tài)化小倉泵系統進(jìn)入中國市場(chǎng)，我國在“八五”、“九五”期間組織了氣力輸送技術(shù)和產(chǎn)品的科技攻關(guān)。

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.

倉泵的主體是一個(gè)能承受一定壓力和溫度的容器。其核心結構包括泵體、流化板、上引管以及氣動(dòng)進(jìn)料閥、氣動(dòng)出料閥、進(jìn)氣閥、二次風(fēng)閥等。流化板設置在泵體下部，壓縮空氣通過(guò)流化板使物料呈流態(tài)化狀態(tài)。上引管與氣動(dòng)出料閥和輸灰管連接。各閥門(mén)由電磁氣動(dòng)換向閥控制。倉泵結合射流技術(shù)與流態(tài)化技術(shù)，通過(guò)壓縮空氣將流態(tài)化物料高速輸送至管道，經(jīng)拉法爾管增壓提升動(dòng)能，實(shí)現中長(cháng)距離氣力輸送。

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.

倉泵的完整工作周期包括以下步驟：首先打開(kāi)進(jìn)料閥和排氣閥，倉泵在常壓下進(jìn)料，直到水平料位計發(fā)出倉滿(mǎn)指示信號；然后關(guān)閉進(jìn)料閥和排氣閥，打開(kāi)高壓氣閥使罐內加壓；當達到操作壓力后，打開(kāi)輸送空氣閥門(mén)和卸料閥，物料開(kāi)始輸送；非常后由壓力開(kāi)關(guān)、料位計或時(shí)間繼電器顯示輸送結束，關(guān)閉高壓氣閥和卸料閥，使全部壓縮空氣用來(lái)清吹輸送管道，同時(shí)打開(kāi)排氣閥使罐內壓力減至常壓狀態(tài)。根據出料口位置的不同，倉泵可分為上出料倉泵和下出料倉泵。倉泵采用全密封、無(wú)污染的輸送方式，可根據具體地形布置輸送管道，實(shí)現集中、分散、大高度、長(cháng)距離輸送，輸送過(guò)程不受氣候條件影響。

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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