An elastic rod sieve plate for viscous-wet coal that is automatically cleaned by speed difference

Abstract

The invention relates to the technical field of sieving equipment, and discloses an elastic rod sieve plate capable of being automatically cleared by utilizing speed difference and used for sticky wetcoal. The elastic rod sieve plate comprises a plate frame, wherein the positions, at the outer side of a protective film, of the outer sides of elastic rod bodies are movably connected with springs in a sleeving mode; the left and the right ends of the elastic rod bodies are fixedly equipped with fixed plates and guide bases in the sleeving mode; the two ends of each spring are connected to the fixed plates through pins; and the positions, between the fixed plates and the guide base, of the outer sides of the elastic rod bodies are fixedly connected with pull plates and transmission plates. Raw coal passes through a gap between adjacent two elastic rod bodies to drop, and drives the elastic rod bodies to rotate; while pulverized coal is adhered or lump coal is blocked, rotation of the elastic rod bodies slows down, and speed difference appears among the elastic rod bodies; and pull plates of the elastic rod bodies in normal rotation pull pins of the elastic rod bodies which do not rotate normally, so that the springs are pulled to achieve telescopic deformation to scrape off or extrude off the pulverized coal or lump coal, and therefore, paste blocking and hole-blocking phenomenaare avoided.

Description

technical field [0001] The invention relates to the technical field of screening equipment, in particular to an elastic rod sieve plate for viscous-wet coal that is automatically cleaned by using speed difference. Background technique [0002] Elastic rod sieve plate is a kind of screening equipment often used in industrial production. It is mainly composed of plate frame, elastic rod and layering bars. Among them, the elastic rod is made of high-quality elastic round steel and inserted into the plate frame. The inside of the round hole is fixed by beading. Under the exciting force of the sieve, the elastic bar sieve plate drives the elastic bar to vibrate up and down. At the same time, the elastic bar itself can rotate freely, so the materials on the sieve plate can be screened. [0003] In coal mining, it is necessary to pile up coal for screening and washing. In order to improve the screening efficiency of high-moisture wet sticky coal, most coal plants use elastic rod si...

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Problems solved by technology

[0003] In coal mining, it is necessary to pile up coal for screening and washing. In order to improve the screening efficiency of high-moisture wet sticky coal, most coal plants use elastic rod sieve plates to work. However, many raw coals, such as Liangshuijing raw coal, raw coal The moisture content is high, and the external moisture is as high as 15%, and the viscosity is relatively high. During the screening process, the pulverized coal is easy to stick to the elastic rod, resulting in the phenomenon of sticking and jamming. Moreover, because the elastic rod is Cylindrical rod, two elastic rods form a sieve hole from top to bottom, blocky raw coal is easy to get stuck in the middle, making the elastic rod unable to rotate normally or stuck, these problems will cause the sieve plate to lose Screening function, but there is no good automatic cleaning method for elastic rods. Generally, the method of cleaning the sieve plate after stopping the machine is not only troublesome to operate, but also reduces the working efficiency of raw coal screening

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