SU924104A1 - Apparatus for extracting tanning raw material - Google Patents

Description

The invention relates to leather production, namely, to installations for the extraction of tanning raw materials.

Known installation for the extraction of tanning raw materials containing chipping machine, hammer crusher, diffusion batteries, loading elevators and conveyors arranged in series [1].

A disadvantage of the known installation is that the mixture of heterogeneous particles entering the diffusion batteries contains a significant amount of fine and dust particles that clog up the openings of the filter grids, reducing the living section of the filter zone of the diffusion batteries, and thereby degrade the quality of tanning raw material extraction.

The purpose of the invention is to improve the quality of extraction tanning raw materials and performance.

• The goal is achieved by the fact that the installation for extracting tanning raw materials, containing a chipping machine, a hammer mill, diffusion batteries, loading elevators and conveyors, is located

sequentially, also contains vibrating sieves with a drain chute system installed in front of the hammer mill, a bunker cyclone for accumulating small and dust particles mounted above diffusion batteries, and a pneumatic actuator connecting the hopper cyclone

.0 with vibratory sieve and hammer crusher.

The drawing shows the setup diagram for the extraction of tannins. With foot - raw materials.

^'E installation consists of a chipper 1 for primary crushing of raw materials, a hammer mill for 2 additional secondary izmelche20 Nia, diffusion battery 3, conveying the chips in the diffusers elevators 4 and 5, conveyors 6 and 7, the shut-off trays 8-11 bleed vanes 12 and 13 vibrating screens 14

__ with cells (for example, 14 mm) and 15 with cells (for example, 5 mm), a suction pneumatic unit comprising, a cyclone hopper 16, a filter 17, a fan 18, pneumatic lines 19 and 20,

_ valve 21 regulating the suction of dust-like particles from a molotkovaya dro3

924104

four

Bilki 2, and receiver 22 with pneumatic * wire 23.

Installation for the extraction of tanning raw materials works as follows.

The raw material after grinding on a rubil-5 machine 1 is fed to the upper vibrating sieve 14 for sieving, through elevator 4 and through trays 8 and 10, screenings from the surface of the sieve 14 are sent to secondary grinding for 10 hammer crusher 2 through the tray 9, sifting sieve 14 crumbles on the surface of the lower vibrating sieve 15 for sieving into two fractions. From the surface of the sieve 15 chips (screenings) on the tray 15 11 down to the elevator 5 of the loading of the diffuser 3. The elevator 5 simultaneously transports a similar by size indicators, which enter it from the hammer crusher 2 along the conveyor b. This fraction fills the conical filter zone and the middle zone of the diffuser 3. At the same time, the formed sifting of the lower sieve 15 as a fraction of small and dust particles from the receiver 22 through the pneumatic conveyor 23 is sent to the bunker-cyclone 16 for intermediate accumulation in the amount of, for example, up to 3 m ⁵ and the subsequent filling of the upper zone 30 of the diffuser 3. Here, the smallest particles (3 mm and below) are sucked out via the pneumatic line 19 from the hammer mill 2. Air from the bunker cyclone 16 through the pneumatic line 20 of the post ”35 flows into the filter 17 for cleaning and then is removed by the fan 18 to the atmosphere. Grinding ends when the specified level of loading of the diffuser 3 is reached, for example, at a level of 40 1 m below the filling neck of the diffuser. The filling of the diffuser 3 for a given program is completed

after the descent of the corresponding amount of chips from the hopper 16.

Similarly, loading of the remaining battery diffusers is carried out using the dispensing conveyor 7. The shutoff gates 12 and 13 of the valve 21 are designed to shut off the flow of crushed chips when it is necessary to turn off certain sections of the installation.

The economic efficiency of the use of the installation for the extraction of tanning raw materials lies in the fact that the production of a third-grade product ', the amount of which previously accounted for 15% of the total volume, stops.

Claims (1)

Claim Installation for the extraction of arcs of raw materials, containing a chisel machine, hammer crusher, diffusion batteries, loading elevators and conveyors arranged in series, characterized in that, in order to improve the quality of tanning raw material extraction and productivity, it contains vibrating sieves with a drain tray system installed before hammer crusher, cyclone bunker for accumulation of small and dust particles installed above diffusion batteries, and pneumatic conduit connecting the bunker-cycle n vibrating sieve and hammer mill.