A filter bag pull-up reciprocating oscillation discharge type centrifuge

Abstract

The invention discloses a filter bag pull-up type reciprocating oscillation discharge type centrifugal machine. A cylindrical outer shell is fixedly arranged on a bottom plate of a machine frame. A rotating drum driven by a power mechanism to rotate is arranged in the outer shell. The rotating drum is usually of a composite vertical structure with an upper column section, an upper conical section, a middle column section, a lower conical section and a lower column section. Holes are formed in the wall of the upper conical section, the wall of the middle column section and the wall of the lower conical section. The inner diameter of the upper column section is the smallest. The inner diameter of the middle column section is the largest. The inner diameter of the lower column section is larger than the inner diameter of the upper column section. The lower end of a filter bag attached to the inner wall of the rotating drum is fixed to the inner wall of the lower column section, the upper end of the filter bag is fixed to the upper end of a longitudinal reciprocating mechanism, and the filter bag slides up and down along the inner wall of the upper column section. After being pulled up, the filter bag is in a big-end-down inverted conical shape. An upper cover is connected to the top end of the outer shell. A feed pipe is arranged on the upper cover. A filter cake outlet and a liquid outlet which is communicated with the portion, outside the rotating drum, of an inner cavity of the cylindrical outer shell are formed in the bottom plate of the machine frame. By means of the centrifugal machine, resistance which is exerted on filter cakes by the shape, formed after the filter bag is pulled tightly, of the filter bag can be thoroughly eliminated, and therefore the filter cakes can be completely discharged.

Description

Technical field: [0001] The invention relates to a filter bag pull-up type reciprocating oscillation discharge centrifuge in the field of solid-liquid separation. Background technique: [0002] The pull-bag centrifuges in the field of solid-liquid separation are all in the form of pull-down bags, that is, the fixed end of the filter bag is above the drum, and the pulling action end is below the drum. After the filter bag is tightened, the filter bag presents a funnel shape with a large top and a small bottom. When the filter cake is unloaded, this shape will produce a certain resistance, which is not conducive to the unloading of the filter cake. In practical applications, the filter cake will have a certain humidity and viscosity, coupled with the resistance caused by the shape, the filter cake will not be completely removed, resulting in accumulation, which will bring inconvenience to production and application, increase operating costs and other some negatives. Inventi...

AI Technical Summary

Problems solved by technology

After the filter bag is tightened, the filter bag presents a funnel shape with a large top and a small bottom. When the filter cake is unloaded, this shape will produce a certain resistance, which is not conducive to the unloading of the filter cake.

In practical applications, the filter cake will have a certain humidity and viscosity, coupled with the resistance caused by the shape, the filter cake will not be completely removed, resulting in accumulation, which will bring inconvenience to production and application, increase operating costs and other some negative effects

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