Bar screen machine with automatic screen mesh cleaning function

Abstract

The invention discloses a bar screen machine with an automatic screen mesh cleaning function. A rack is included, a motor is arranged on the rack and drives a bar screen device to rotate; the bar screen device comprises more than two groups of chain bar strips arranged at intervals, each chain bar strip is formed by connecting a plurality of chain bars end to end, the chain bar strips are respectively wound on a driving roller and a driven roller, the radial arrangement distance of the chain bar strips on the upper side faces of the driving roller and the driven roller is a, the single-numberchain bar strips and the even-number chain bar strips on the lower side faces of the driving roller and the driven roller are respectively separated through a lower supporting roller and a lower pressing wheel, and the radial arrangement distance of two adjacent chain bar strips on the same plane is 2a+b. According to the bar screen machine with the automatic screen mesh cleaning function, the single-number chain bar strips and the even-number chain bar strips on the lower side faces of the driving roller and the driven roller are separated by the lower supporting roller and the lower pressingwheel respectively, so that screened materials can be smoothly discharged out of a screen, and even the clamped materials can be smoothly discharged out of the screen along with the separation of twoadjacent chain bar strips.

Description

technical field [0001] The invention relates to the technical field of sieving, and more specifically relates to a bar sieving machine with the function of automatically cleaning sieve holes. Background technique [0002] The bar sieve is mainly used for coarse screening of materials. Because of its simple structure and convenient layout, it is widely used in beneficiation processes and metallurgy, building materials, chemical and other screening processes. [0003] The current common bar screen is unpowered, such as Figure 9 , 10 As shown, it is mainly composed of sieve bars 1 and sieve frame 2. The sieve bars 1 are arranged on the sieve frame 2 in an orderly manner. The sieve bars 1 are arranged in a sieve size with an interval of a. The sieve surface composed of sieve bar 1 is installed at an inclination angle of λ to the horizontal. The material to be screened falls on the upper part of the sieve surface and then falls down along the sieve surface. The material in a ...

AI Technical Summary

Problems solved by technology

[0004] During the screening process, there are always some materials whose particle size makes them just stuck on the sieve holes. Because the common bar sieve has no power, these material particles stuck on the sieve holes can neither go down nor come out. Under the impact of other materials, it will become more and more jammed. It needs to be shut down frequently for manual cleaning. The cleaning is labor-intensive and time-consuming. Therefore, the common bar screen is easy to block and the screening efficiency is not high.

Even if there is a permanent electric bar screen machine, the jammed gravel cannot be removed. How to solve the above technical problems is the research object of those skilled in the art

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