UA2450U - SHAKER - Google Patents

Abstract

Vibrating screen, including housing, frames, loading and unloading devices, one or more sieves located one above the other, vibrating drives are connected to sieves, where each point of vibration excitation of the sieves has a separate vibrating drive, characterized in that the vibrating actuators have adjusting devices their position relative to the sieves.

Description

The useful model refers to the technique of dividing bulk polydisperse materials into fractions and can be used in food, chemical, construction, coal and other industries.

There is a vibrating screen according to a. with. Mo. 1422477 IPC: VO7B 1/46, which includes a case, two sieves, which are fixed in the case one above the other. A traverse is elastically installed in the housing, which is connected to the vibration drive.

The vibrational oscillations excited by the vibration drive are transmitted to the sieves through two groups of pushers adjacent to them. One group of pushers is fixed directly on the traverse and is adjacent to the lower sieve, and the second group is adjacent to the upper sieve and is fixed on U-shaped frames, which are connected to the traverse through elastic elements.

A well-known vibrating screen (declaratory patent for the invention Me36507 А IPC: 6 ВО7В 1/46), which includes a body, frames, loading and unloading devices, sieves, vibrating drives connected to the sieves.

Each point of vibration excitation has a separate vibration drive with adjustable amplitude and frequency of oscillations.

The significant disadvantages of these vibrating screens are the difficulty of adjusting the close fit of the surface of the pushers to the sieves.

The closest solution (prototype) is a vibrating screen according to the declaratory patent issued under ME 51431 А IPC: 6 ВО7В 1/46, which includes a body, frames, sieves located one above the other, vibration drives are connected to the sieves. Each point of vibration excitation of the sieves contains a separate vibration drive.

The screen has loading and unloading devices. A separating partition is installed between the sieves, and the raw product is fed to each sieve at the same time.

The impossibility of ensuring the tightness of the fit of the pushers of the vibrators to the sieves without disassembling it should be attributed to a significant drawback of this screen.

The useful model is based on the task of improving the vibrating screen by ensuring the possibility of adjusting the density of the vibrator pushers to the sieves without disassembling the screen.

The task is solved by the fact that in a vibrating screen, which includes a body, frames, loading and unloading devices, one or several sieves located one above the other, vibrating drives connected to the sieves, where each point of vibration excitation has a separate vibrating drive, and the fastening of the vibrating drives have devices for adjusting their position relative to the sieves, in fig. 2 - section along A-A in fig. 1.

Due to the fact that the fasteners of the vibrators have devices for adjusting their position relative to the sieves, this makes it possible to adjust the tightness of the contact surface of the pushers of the vibrators with the sieves without disassembling the screen.

The ability to adjust the tightness of the pushers of vibrators with sieves without disassembling the sieve greatly simplifies its maintenance and adjustment to the appropriate vibration mode of the sieves.

Fig. 1 shows a general view of a vibrating screen with one of the possible options for mounting the vibrators with a device for adjusting their position relative to the sieves, on

The vibrating screen has a body 1, frames 2, loading З and unloading devices 6 and 8, sieves 4, vibrating drives 5 with pushers attached to them, while the fastening of the vibrating drives has devices 7 for adjusting the position of the vibrating drives relative to the sieves. The devices for adjusting the position of the vibrators can be made in the form of eccentrics U on which the frames 11 for fastening the vibrators rest.

The respective positions of the eccentrics are fixed with nut 10, and the positions of the mounting frames of the vibration drives are fixed with bolt 12.

The ordered vibrating screen works as follows: the material, which is subject to division into fractions, is fed to sieve 4 through the loading device C. In the two-sieve version of the sieve, the material is fed to the upper sieve. Due to the vibrations of the sieves, which are transmitted to them from the vibratory drives 5, material particles with sizes smaller than the distribution limit of the sieves 4 are screened out. The material particles, which are larger than the distribution limit of the sieves 4, are moved along the sieves to the unloading devices 6, and the particles the material sifted through the lower sieve is removed from the screen through the unloading device 8.

The adjustment of the position of the vibrators 5 relative to the sieves 4 and the density of their fit is performed in the following sequence: the nut 10 that fixes the position of the eccentric 9 is released; loosened bolts 12 of fastening of frames 11 of vibration drives 5; the eccentric 9, which interacts with the frame 11, when turning, raises the frame together with the vibrators, or lowers it to the required position. After setting the desired position of the vibrators relative to the sieve, the fixing nuts 10 and bolts 12 of the frames 11 are tightened.

The presence in the screen of a device for adjusting the tightness of the pushers of the vibrating drives with sieves greatly simplifies the performance of this operation during the operation of the screen.

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Claims (1)

A vibrating screen containing a body, frames, loading and unloading devices, one or more sieves located one above the other, vibrating drives connected to the sieves, where each point of vibration excitation of the sieves has a separate vibrating drive, which differs in that the mountings of the vibrating drives have devices for adjusting their position relative to sieves.