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The unloading device is composed of the spiral gate of the bottom of the reservoir, the material separation box, the electric (pneumatic) switch valve, the electric flow control valve and the discharge slip (see Figure 1), which is used for the unloading of cement raw powder or cement. The unloading device at the bottom of the warehouse can automatically adjust the discharge flow and be uniform, with a reasonable structure, simple and convenient operation and maintenance, up to three unloading ports can be set, and the user can also choose the warehouse side unloading device (see Figure 2).
The sealing structure of the warehouse bottom unloading device can be divided into two forms: soft seal and rigid seal. The soft sealing structure is sealed between the valve spool and the valve body by wool felt pressure. The rigid sealing structure is attached to the inlet end of the discharge with the joint head. Steel arc seal is installed between the connecting head and the valve core, which is close with the valve core to achieve rigid seal. The sealing gap can be adjusted, which is more suitable for occasions with high action frequency and high temperature. It has good sealing effect and long service life.
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