Pectin dedicated volute sludge dehydrator and screw shaft thereof

Abstract

The invention discloses a pectin dedicated volute sludge dehydrator and a screw shaft thereof. A reducing variable pitch screw shaft is adopted, a pitch of a screw panel is gradually reduced along a sludge outlet tank; the diameter of the screw shaft is gradually increased along a sludge outlet tank direction from the 1 / 3 position of the shaft length; and the length of the back 2 / 3 section of the screw shaft, namely the dehydration section, is increased by 10-15%. Aiming at the features that the pectin is high in sludge organic content, soft in mud, light in proportion, and hard to dehydrate, the pectin dedicated volute screw shaft is innovated and designed; and through special design of the screw shaft, the pressure in a dehydration cavity is higher, the compression ratio of a mud inlet end to a mud outlet end can achieve 3.5: 1, the dehydration time is longer, and the dehydration effect is better. The pectin dedicated volute sludge dehydrator has the characteristics of being larger in cavity pressure, hard to stick the shaft, longer in sludge dehydration retention time and high in dehydration efficiency; and the sludge dehydration effect can be effectively improved while guaranteeing that the processing efficiency of unit time cannot be reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a pectin-specific screw stacking sludge dehydrator and a screw shaft thereof. Background technique [0002] With the continuous improvement of people's living standards, the demand for canned food is also increasing. Among all kinds of canned food, the production and trade volume of canned vegetables and canned fruits has become the mainstream. Due to the large amount of organic wastewater produced in the production of canned fruit, the wastewater contains organic matter such as sugar, organic acid, pectin, acid, and alkali. If it is directly discharged into natural water bodies without treatment, it will consume a large amount of dissolved oxygen, resulting in hypoxia in the water body. Humans and aquatic organisms die, so while the canned food factory is developing rapidly, the problem of wastewater treatment has increasingly attracted people's general attention...

AI Technical Summary

Problems solved by technology

Under this condition, using a general screw stacker to reduce the processing capacity of the equipment to achieve the processing effect will result in an increase in the one-time investment of the equipment.

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