Sludge dewatering device

Abstract

The invention discloses a sludge dewatering device, and solves the problems of low dewatering efficiency and low separated matter discharging efficiency. The sludge dewatering device is mainly characterized by comprising a shell, a rotating barrel arranged inside the shell in a sleeving manner, and a stirring frame arranged inside the rotating barrel in a sleeving manner, wherein the stirring frame comprises a body and stirring blades; a supply chamber for injecting sludge is arranged in the body; the stirring blades and the rotating barrel define separation chambers communicated with the supply chamber; a separated matter outlet and a separated liquid outlet are respectively formed in two ends of the rotating barrel; the rotating barrel comprises a straight section and a conical section;the conical section is opposite to the straight section, and is close to the separated matter outlet; the large end of the conical section is connected with the straight section; barrier plates are arranged on the stirring blades; guide surfaces for guiding the sludge to slide towards the inner wall of the rotating barrel are arranged on the barrier plates; cutting edges are arranged at the ends,far away from the body, of the barrier plates; included angles between the guide surfaces corresponding to the conical section and the cross section of the rotating barrel are gradually enlarged in the axial direction from inside to outside; included angles between the guide surfaces corresponding to the straight section and the cross section of the rotating barrel are all equal.

Description

technical field [0001] The invention relates to a sludge dewatering device. Background technique [0002] The sludge dehydration separation device uses centrifugal rotation to concentrate and dehydrate the sludge. In order to improve the performance of concentration and dehydration, two coagulants (inorganic coagulant and polymer coagulant) are generally mixed into the sludge, which not only reduces the dewatering pollution The water content of the mud is increased, and the clarity of the dehydration separation liquid is increased. The inorganic coagulant is injected into the sludge and mixed with more sludge with the continuous stirring of the stirring blades. However, during the continuous stirring of the stirring blades, the sludge will also Continuously move to the separator outlet and finally discharge, so the time for the inorganic coagulant and sludge to be stirred and mixed is limited, and it is impossible to ensure that the inorganic coagulant and sludge are evenly ...

AI Technical Summary

Problems solved by technology

[0002] The sludge dehydration separation device uses centrifugal rotation to concentrate and dehydrate the sludge. In order to improve the performance of concentration and dehydration, two coagulants (inorganic coagulant and polymer coagulant) are generally mixed into the sludge, which not only reduces the dewatering pollution The water content of the mud is increased, and the clarity of the dehydration separation liquid is increased. The inorganic coagulant is injected into the sludge and mixed with more sludge with the continuous stirring of the stirring blades. However, during the continuous stirring of the stirring blades, the sludge will also Continuously move to the separator outlet and finally discharge, so the time for the inorganic coagulant and sludge to be stirred and mixed is limited, and it is impossible to ensure that the inorganic coagulant and sludge are evenly mixed. The prior art provides a sludge dehydration separation device (CN102448896), The rotating cylinder includes a straight section and a conical section. The large end of the conical section is connected to the straight section. Both ends of the rotating cylinder are provided with a separator outlet and a separation liquid outlet. The conical section is closer to the separator outlet than the straight section. , not only improves the extrusion effect of the stirring blade on the coagulated sludge, but also prolongs the time that the coagulated sludge stays in the separation chamber. low discharge efficiency

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