Bolting and grading device high in productivity and easy to maintain

Abstract

The invention discloses a bolting and grading device high in productivity and easy to maintain and belongs to the technical field of mechanical equipment. According to the bolting and grading device high in productivity and easy to maintain, two external transmission device synchronous operating structures are adopted, running is stable and reliable, and maintaining is easy; and meanwhile, a lot of screen body inner space is saved, optimized design of a screen way is facilitated, and the productivity is improved. In the bolting and grading device high in productivity and easy to maintain, thescreen way structure in multi-way feeding is adopted, and screen lattices and a screen frame are of a pulling structure; a screen door is in hinge connection and can achieve compressing of the screenlattices and the screen frame through a compressing handle after closing of the screen door; an oleophobic layer is added on a screen frame bottom plate; a rack is of a movable connection structure; apulse valve is used for being connected with external high pressure gas, and periodical automatic gas spraying for screen net clearing is achieved, and the productivity is improved due to many optimized design; and meanwhile operating and installing are facilitated, and the maintaining difficulty is lowered. The bolting and grading device achieves the characteristics that the productivity is highand maintaining is easy.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and more specifically relates to a high-capacity and easy-to-maintain sieving and grading equipment, which is widely used in flour processing, food, pharmaceutical, feed, chemical, mining, alcohol, starch and other industries for powder or Screening, grading and impurity removal of granular materials. Background technique [0002] In the milling and feed industry, powder or granular materials are often screened, classified and impurity removed by means of sieving and grading equipment to meet the needs of various materials. The output, efficiency, and grading effect of the screening and grading equipment are the key performance indicators of the entire processing line. If the output is not enough or the grading effect is not good, it will seriously affect the smooth progress of the subsequent processing and manufacturing process, and then affect the customer experience. [0003] At ...

AI Technical Summary

Problems solved by technology

[0004] (1) The sieve grid is difficult to disassemble and replace, and it is not easy to maintain and clean: the traditional sieve grid often adopts the stacked structure of the whole warehouse, and is fixed on or in the sieve body by a combination of horizontal compression and vertical compression. If there are faults such as sticky screen, material blocking, leaking material or damage, it is necessary to remove all the screen grids and clean up or check layer by layer. The maintenance cost of the equipment is high and the production efficiency is low, which also seriously restricts The normal operation of the entire production line

[0005] (2) The built-in transmission device occupies a large internal space of the sieve body, the operation is unstable, and the maintenance is difficult: traditional sieving and grading equipment basically adopts a set of built-in transmission devices, which are usually arranged inside the sieve body

On the one hand, the transmission device occupies a large amount of internal space of the sieve body, which affects the layout of the sieve grid and the screen path in the sieve body and the design of the discharge port of the sieve body, and also affects the improvement of equipment production efficiency and production capacity; on the other hand, due to There is only one set of transmission device, so the stress is concentrated on one side of the screen body during the operation of the equipment, resulting in local stress concentration of the equipment, which is easy to be damaged, and has a large safety hazard; at the same time, when the transmission device needs to be repaired and maintained, the equipment must be opened , Removing the relevant parts can only be carried out, the operation is cumbersome, the workload is heavy, the maintenance cycle is long, and frequent disassembly and installation will also affect the accuracy and service life of the transmission parts

[0006] (3) The material flows along a single direction or multiple directions, and the material distribution is uneven: in traditional screening equipment, the material enters the screen body from the feed port generally along a single direction or multiple directions. Flow, so that the material distributed to each screen surface is large and uneven, the screening effect is poor, and the screening efficiency is low

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