Dry separation and classification vibrating screen

Abstract

The invention relates to a dry separation and classification vibrating screen. The dry separation and classification vibrating screen comprises a screen box, a screen plate, a support, a vibrator, damper springs, a motor transmission device and a control device, and is characterized in that a blind plate beam is arranged in the middle of the upper part of the screen box, rails are arranged on the two sides of the blind plate beam at the upper part of the screen box, and a blind plate is arranged above the rails through a rolling wheel and is composed of an upper-layer blind plate body and a lower-layer retractable blind plate body. The dry separation and classification vibrating screen has the advantages that the blind plate is arranged at the upper part of the screen box so that non-magnetic minerals can directly enter a non-magnetic mineral collecting bin through the upper-layer blind plate body, the screening amount of the screen plate can be decreased, the upper-layer blind plate body is arranged in a stair shape so that the non-magnetic minerals can be accumulated on the blind plate to form a material piling phenomenon, and therefore the anti-wear effect can be achieved.

Description

technical field [0001] The invention belongs to the technical field of sintering and screening (magnetic ore dry separation and screening), in particular to a dry separation and grading vibrating screen. Background technique [0002] At present, the crushing in the domestic mineral processing process is mostly a three-stage closed-circuit traditional process of coarse crushing, medium and fine crushing and screening operations, that is, the coarse crushed products enter the intermediate crushing, and the intermediate crushing products are fed into the screening process, and the screened products after screening Fine crushing, the finely crushed products are fed into the screening process, and the products under the screen enter the grinding process. The screening equipment used in traditional mineral processing technology is a vibrating screen, which is mainly composed of a screen box, a motor drive, a vibrator, a vibration damping device and a screen surface. The motor di...

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Problems solved by technology

The screening equipment used in traditional mineral processing technology is a vibrating screen, which is mainly composed of a screen box, a motor drive, a vibrator, a vibration damping device and a screen surface. The motor directly drives a group of blocks located in the middle of the screen box through a belt reduction device. The eccentric vibrator rotates, and the centrifugal inertia force generated by the eccentric block makes the inclined screen box move in a circular track under the support of four sets of damping springs, and the material is vibrated and thrown from the feeding end to the discharging end, realizing stratification and screening Purpose, so as to play the role of grading the minerals fed into it. Due to the limitation of the function of the traditional vibrating screen, the products fed into the traditional vibrating screen can only be classified by the mineral particles in the sieve box to obtain the on-screen product and the under-screen product. , instead of retaining the minerals that do not need to be screened temporarily according to the demand, that is to say, the minerals that pass through the screening machine can only be forced to be classified under the traditional technical conditions, which leads to the fact that if the materials that do not need to be screened in the process Feeding into the screening machine not only increases the operating load of the screening equipment, reduces the screening efficiency, but also causes a waste of resources

However, if the materials that do not need to be screened do not enter the screening equipment, a special belt conveyor will be required to transport the part of the materials, which also leads to the construction cost of the belt transportation equipment.

In addition, in order to make the products in the screening bin be fed into the screening machine normally, it is necessary for the feeding funnel of the screening operation to be above 45°, which makes the height difference between the screening rooms higher, which undoubtedly increases the screening capacity. The construction cost of the subdivided workshop

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