A double-layer rotary screen

Abstract

The invention discloses a double-layer rotary sieve. The double-layer rotary sieve is fixed on a supporting seat and comprises a shell, an outer sieve and an inner sieve, wherein the inner sieve is arranged at the inner layer of the outer sieve; the shell is arranged at the outer part of the outer sieve; sieving holes are arranged on sieve plates of the outer sieve and the inner sieve; a plurality of arc-shaped lining plates are arranged in the inner sieve and are close to the inner sieve; the heads and the tails of the two adjacent lining plates are attached to enclose into a cylindrical shape same as the inner sieve; one end of each arc-shaped lining plate is connected with a rib frame of the inner wall of the inner sieve by a hinge and the other end of each arc-shaped lining plate is movable; in the cylinder rotating process of the inner sieve, the arc-shaped lining plates rotate in a following manner, the tail ends of the arc-shaped lining plates fall gradually and fall vertically when reaching the high point, and then sieved materials fall again by means of the gravity action, so that secondary sieving is realized, the locking of the sieving holes is avoided and the sieving effect is better.

Description

technical field [0001] The invention relates to a sieve, in particular to a double-layer rotary sieve. Background technique [0002] The current general rotary screen is a cylindrical structure, and there are several arc-shaped screens on the circular frame. The motor drives the rotary motion of the cylindrical screen, and the particles smaller than the screen holes are screened out, so as to achieve particle screening. the goal of. The rotary screen is mainly composed of a motor, a reducer, a roller device, a frame and other mechanisms, and the roller device is arranged in an inclined manner. The motor is connected with the roller mechanism through the reducer, and drives the roller mechanism to rotate around its axis. When the material enters the drum device, due to the inclination and rotation of the drum device, the qualified material is discharged through the screen mesh of the outer circle of the drum, and the screened material is discharged through the end of the dr...

AI Technical Summary

Problems solved by technology

However, such rotary sieve equipment has a single purpose and a backward structure, which does not meet the needs of high-precision modern production, especially when the amount of sieved materials is required to be large and the difference in particle size is small, the screening effect of the above-mentioned sieve is poor, and it is difficult to achieve the desired screening. Effect

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