A large overcurrent strong shear mixing chopper for sewage treatment

Abstract

The invention provides a large overflowing and strong-shear mixing and chopping machine for sewage treatment. The mixing and chopping machine comprises a front cavity, a movable cutter head, a staticcutter head, a mixed cavity, a main shaft, a rear cover and a power source; the front cavity, the mixed cavity and the rear cover are matched and installed in sequence, and the movable cutter head isinstalled on one end of the main shaft; the other end of the main shaft is connected to the power source through the rear cover; the static cutter head is installed on the left end of the mixed cavitythrough transition fit, while the movable cutter head is installed in a disc inner cavity on the front inner side of the static cutter head; and the movable cutter head can be freely rotated relativeto the static cutter head. The mixing and chopping machine provided by the invention is installed in front of a sewage pump as sewage pretreatment equipment, and when the equipment is used for conveying fibrous materials and blocky materials, the equipment damage caused by motor overload resulted from blockage of an impeller channel can be avoided. The mixing and chopping machine has the advantages of rational design, obvious chopping and mixing effect, no blockage, high anti-winding capability, simple structure, easy installation and maintenance, stable operation, etc.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a large flow and strong shear stirring chopper for sewage treatment. Background technique [0002] Today in the 21st century, with the development of the times, science and technology are advancing, people's quality of life is getting higher and higher, but behind the rapid development has also brought a lot of environmental pollution such as industrial pollution, domestic water pollution, etc. , environmental pollution is becoming more and more serious, which not only affects the normal life of human beings, but even endangers people's physical and mental health. Water pollution caused by domestic sewage and industrial sewage plays an important role in environmental pollution, and it has great The decisive impact is also an important issue that needs to be resolved urgently. As the country's requirements for environmental protection are getting higher and higher, the development ...

AI Technical Summary

Problems solved by technology

[0003] For domestic sewage, it often contains solid impurities and long-fiber domestic waste that are easy to deposit and agglomerate. During the process of sewage treatment and discharge, these things often cause blockage or entanglement of the sewage pump that transports sewage. The rotor is stuck, the motor is overloaded and the pump cannot run, so when the pump is used to transport sewage, it is necessary to cut, break and mix the sewage and the dirt contained in it.

[0004] In the prior art, when treating and transporting sewage containing a large amount of long-fiber impurities, pump devices with strong flow capacity, such as screw centrifugal pumps, single-channel impellers, and double-channel impellers, are often used to reduce the impact of impurities on the rotor and the pump equipment. The possibility of entanglement and jamming of the flow-passing parts, however, the effect is still unsatisfactory in the face of high-concentration solid-liquid materials and materials containing high elasticity and toughness long fibers, and entanglement and blockage are still easy to occur; or before the sewage pump inlet Add a single stirring or chopping device, such as a closed impeller non-clogging grinder pump with a patent publication number of CN202417996U and a dual-channel sewage pump with a grinder cutter head with a patent publication number of CN206234126U. Both lengthen the pump shaft in front of the impeller, and install a dynamic and static cutter head at the pump inlet to realize the chopping of impurities, but this will undoubtedly greatly increase the load on the motor of the pump conveying equipment, and because the stirring or chopping device is installed in the same The pump shaft causes a large degree of lengthening of the pump shaft, resulting in high requirements for the coaxiality of the pump equipment, which has great difficulties in processing and installation, and at the same time, it is easy to cause hidden dangers such as rotor instability when starting and stopping; the prior art The Chinese Publication No. CN205260401U is a grinding pump moving cutter head structure, only a few channels are provided on the outer edge of the moving cutter head or the static cutter head to realize the grinding and cutting of impurities with dirt, and the inner circle of the cutter head As a closed structure, the liquid flow can only flow through these semicircular channels on the outer edge. This structure has large limitations and poor passability. It can only be used for small-scale domestic sewage treatment and biogas tank residue transportation, which cannot meet The growing demand for large traffic

[0005] After searching, there is no public report on the large flow and strong shear mixing chopper used for sewage treatment

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