Aggregate opening and closing device

The invention discloses a material collecting opening opening and closing device which comprises a material falling pipe, a gate base and a sealing piece, a material collecting opening is formed in the bottom of the material falling pipe, the gate base is arranged on the material falling pipe in a sleeving mode, and the gate base is in sliding fit with the material falling pipe between a first position and a second position. The closing part is connected with the gate base in a pivoted mode, when the gate base is located at the first position, the closing part closes the material collecting opening, and when the gate base is located at the second position, the closing part opens the material collecting opening. The material collecting opening switching device has the advantages that material scattering is reduced, and regular cleaning is not needed. 本发明公开一种集料口开关装置，集料口开关装置包括落料管、闸门基座和封闭件，所述落料管底部设置有集料口，闸门基座套设在所述落料管上，所述闸门基座在第一位置和第二位置之间与所述落料管可滑动地配合，所述封闭件与所述闸门基座可枢转地相连，当所述闸门基座处于所述第一位置时，所述封闭件封闭所述集料口，当所述闸门基座处于所述第二位置时，