Structure and working principle of belt sludge dewatering machine The sludge is first mixed with flocculant and flocculated into a mass, and then subjected to gravity dewatering, wedge pressure dehydration, low pressure dehydration, medium pressure dehydration and high pressure dehydration to gradually make the sludge moisture Reduced, and finally discharged into solids. This is the working principle of the “new ring†belt sludge dewatering machine, which is designed according to the dewatering characteristics of the sludge.
principle:
The well-conditioned sludge enters the gravity dewatering zone of the belt sludge dewatering machine. Under the joint action of the cloth mechanism and the dredging mechanism, the filter belt moves forward and removes the void water of the sludge under the action of gravity.
When the sludge runs along the filter belt to the end of the gravity dewatering zone, it enters the wedge-shaped dewatering zone of the belt sludge dewatering machine through the turning mechanism. In the wedge-shaped dewatering zone, the sludge is pre-stressed by the wedge pressure formed by the two filter belts, and further desorbed. Remove the void water from the sludge.
The gravity dewatering and wedge pressure dewatering sludge enters the low pressure zone and the high pressure zone to press and dewater. The pressure zone is composed of a low pressure porous roller and a high pressure roller. The filter belt is wrapped around the sludge and wound on the surface of the pressure roller, because the diameter of the pressure roller is large. The arrangement is small, so the pressure exerted by the filter belt on the sludge is gradually increased from small to large, which is consistent with the dewatering characteristics of the sludge.
The filter cake which has been dehydrated by pressing is solidified by a scraper and discharged.
The whole sludge dewatering machine drives the two filter belts to continuously move in addition to the frame 1 which acts as a skeleton. The tensioning device is responsible for tensioning the filter belt to form a pressing force on the sludge; the cleaning device is responsible for cleaning the filter belt. The residual slag ensures the high efficiency of the filter belt; the automatic correcting device is responsible for ensuring that the filter belt automatically corrects the axial offset during operation; the filtrate tray is used to collect the filtrate produced by press dewatering; and the roller system includes the pressure roller and the drive. The roller, the tension roller, the deflection roller, the discharge roller, and the guide roller support the filter belt and allow the filter belt to repeatedly repeat various functions.
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