Jet dryer and large-scale vacuum jet drying equipment using the jet dryer

Abstract

The invention discloses a jet flow drying machine. The jet flow drying machine comprises a transmission main shaft (110), a fan (101), a jet flow ejector (105) as well as driving force supplying structures, wherein the transmission main shaft (110) is supported by a bearing base (109), the fan (101) is coupled with the transmission main shaft and is driven to rotate through the transmission main shaft, and the fan is provided with an inlet and an outlet; the jet flow ejector (105) is coupled with an inlet of the fan, and the driving force supplying structures are symmetrically arranged on the two sides of the transmission main shaft (110) and can drive the transmission main shaft through a transmission structure; the symmetrical driving force supplying structures are two driving units (electrical machines or motors) or are characterized in that an electrical machine or a motor is arranged on one side, and an adjustable or fixed rotating pair for providing equivalent tensile force is arranged on the other side, and the tensile force of the motor arranged on one side of the transmission main shaft is balanced. The jet flow drying machine provided by the invention has the advantages that the transmission main shaft of the equipment adopts forms such as synchronous belts or chains, and transmission forms are contributed to achieving an opposite-pulling structure and generating the same pull force in opposite directions, so that the adjustable opposite-pulling angle can be realized. The invention also discloses large-scale vacuum jet flow drying equipment based on the drying machine.

Description

technical field [0001] The invention relates to a large-scale vacuum jet drying equipment, which belongs to the field of crushing and drying devices and can be widely used in coal washing plants, chemical plants, and municipal garbage disposal. Background technique [0002] In today's drying and crushing industry, although there are many types of drying and crushing equipment, they can be roughly divided into two categories, high-temperature drying and normal temperature drying. Among them, there are many risk factors in high-temperature drying. For example, drum drying is a typical representative of high-temperature drying. This equipment Long-term work in high temperature and high dust concentration occasions, improper control is prone to explosion, and there is always heat radiation and dust pollution. With the development of the current society, normal temperature drying has gradually become the main demand for crushing and drying. Normal temperature drying equipment main...

AI Technical Summary

Problems solved by technology

[0004] However, the vacuum jet tube in this drying equipment cannot be designed to have a large throughput due to the influence of the driving part, because the driving part of the high-pressure centrifugal fan is usually such as an attached Figure 5 In the one-sided cable-stayed driving structure 800 shown, in this driving mode, the bearing clearance is biased to one side by the driving motor 810 through the pulling force of the transmission structure 830, and the main shaft 820 swings during high-speed operation, causing the fan 840 to run Large vibration and poor stability

Due to the disadvantages of large vibration during the operation of the main shaft, when the jet dryer part of this equipment is designed to have a large processing capacity, it will produce vibrations that can damage the stability of the structure. Therefore, the jet drying equipment using this method cannot handle Relatively large amount, such as 30 tons / hour processing capacity

[0005] In the prior art, it is also proposed to drive the high-pressure centrifugal fan by directly connecting the speed-adjustable motor. This method is disclosed in the equipment disclosed by the applicant in the Chinese utility model patent with the publication number CN202928310U. However, such The drive method has high requirements on the motor, resulting in a substantial increase in equipment costs, and at the same time will increase subsequent operating costs

[0006] In addition, the vacuum jet pipes (or vacuum jets) of the vacuum jet machines in the prior art are all arranged horizontally. Since the material usually has a certain viscosity, the negative pressure generated by the fan alone is not easy to horizontally enter the material from the inlet. The material in the vacuum jet tube is completely sucked in, and it is easy to block the material when feeding

[0007] The many deficiencies in the prior art pointed out above lead to large power consumption and high cost of the vacuum jet drying equipment in the prior art, which will never affect the stability of equipment operation and the control of operating costs.

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