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倉泵是氣力輸送系統(tǒng)中經常使用的設備之一
Warehouse pump is one of the commonly used equipment in pneumatic conveying systems. It belongs to a sealed pressure vessel, which is used to load materials into the container, mix them with compressed air, and transport them to the unloading site through the conveying pipe; The bin pump conveying system can intermittently or continuously convey materials, which is mainly determined by its structural form. Single bin pumps are intermittent conveying, while double bin pumps are continuous conveying. Warehouse pumps have the characteristics of smooth transportation and high mixing ratio, and are widely used for the transportation of granular materials such as medicinal powder, cement, coal powder, clay powder, flour, calcium carbonate, limestone powder, etc.
倉泵按照出料方向可以分為上引式倉泵
According to the discharge direction, bin pumps can be divided into upward suction bin pumps, downward suction bin pumps, and middle suction bin pumps, among which the first two are commonly used types; Due to the different fluidization states of materials inside the warehouse pump, instability may occur in the conveying pipe, and parameters such as conveying capacity and mixing ratio may also change; Based on years of project experience, it is more suitable to use an upward suction bin pump when the conveying distance is not too long; The down drawn bin pump is more stable during the conveying process and can improve the conveying capacity; When selecting, the appropriate bin pump should be chosen based on the characteristics of the conveyed material and process requirements.
為了節(jié)省能源
In order to save energy and reduce long-term operating costs, continuous conveying can be used to arrange and combine the bin pumps, including single group two tank parallel, single group two tank series, and double group two tank series.
單組兩罐并聯(lián)是一種常用的連續(xù)氣力輸送方法
,當一臺倉泵在輸送物料時,另一臺倉泵則進行加料;當第一臺倉泵輸送完成后Parallel connection of two tanks in a single group is a commonly used continuous pneumatic conveying method. When one bin pump is conveying materials, the other bin pump is feeding them; After the first bin pump completes the delivery, it is switched through a switching valve; The actions of these processes are implemented by electrical control and detection systems. The drawback of this arrangement is that when one bin pump is conveying, the other sending tank must empty the pressure inside the container before it can be loaded, which increases the gas consumption and power consumption.
單組兩罐串聯(lián)是由上
A single group of two tanks connected in series is composed of upper and lower bin pumps vertically connected in series. The two containers are connected by a loading valve and are interconnected by a pressure equalization valve and pipelines; Both the upper and lower storage pumps are equipped with level control meters to control the amount of material in the tank. When feeding, the conveying pressure of the lower bin pump is first sent to the upper bin pump through a pressure equalizing valve, and feeding is carried out under the condition of pressure balance between the two containers. After the feeding is completed, the loading valve and pressure equalizing valve are closed, the exhaust valve is opened, and the air pressure inside the upper chamber pump is completely emptied before feeding; After filling, the feeding valve and exhaust valve are closed to prepare for feeding into the lower bin pump, completing a cycle program to ensure continuous delivery; All actions are automatically controlled by a programming controller.
雙組兩罐串聯(lián)是把兩個單組兩罐串聯(lián)的形式進行并聯(lián)組合而成的
。它的主要特點是:當一組在輸送物料時,第二組進行進料,兩組交替運行;當第一組的物料快要輸送完畢時,進氣閥和輸料閥關閉,下倉泵內儲存的氣壓通過均壓管進入上倉泵,在氣壓相同的情況下,裝料閥打開,物料進入下倉泵內,這樣既節(jié)省了耗氣量,又降低了能耗。Double group two tank series connection is a parallel combination of two single group two tank series connections. Its main feature is that when one group is conveying materials, the second group is feeding, and the two groups are running alternately; When the first group of materials is about to be transported, the inlet valve and feeding valve are closed, and the air pressure stored in the lower chamber pump enters the upper chamber pump through the pressure equalization pipe. Under the same air pressure, the loading valve opens and the materials enter the lower chamber pump, which not only saves air consumption but also reduces energy consumption.
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