SU875109A1 - Chamber-type dewatering and loading unit - Google Patents

Description

(54) CHAMBER DEGREE-LOADING MACHINE

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This invention relates to the mining industry and may be eff; It is called for in the underground mining of mineral deposits with the development of a developed space.

Known chamber filling machine, including chambers with loading and unloading devices 1I, valves of the release of the working agent, air supply and transport pipelines fl

The disadvantage of such a machine is that it is not suitable for operation when feeding material into it in the form of slurry or moisture.

Also known is a chamber dewatering and loading apparatus, comprising at least two cylindrical chambers, each of which contains a loading pipeline, a loading and unloading device, a conical sieve, a water collection tank with a drain pipe, a ring separator with nozzles, supply and discharge pipelines from the chamber compressed air, air supply and transport pipelines 12}.

The disadvantage of the known apparatus is the low intensity of the dewatering of the filling material, which is caused by the need to dehydrate a large layer of the filling material {2 meters or more) by blowing its pores with compressed air. Because of this, much time is spent on dewatering the bedding material in the chamber, and this reduces the productivity of the apparatus.

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The purpose of the invention is to increase the intensity of dehydration of the slurry entering the chamber and increase the productivity of the apparatus.

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This goal is achieved by the fact that each chamber is square-shaped and is equipped with a cone-shaped distributor in its upper part.

20 slurries, an arc filter and an additional catchment basin with a slurry pipeline to pre-dewater the slurry in the chamber, and in the lower part the chamber is equipped with central and side filters, the central filter is connected to the air supply pipe, and the lateral filters are connected to the conical sieve and connected to the water collector capacity.

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The drawing shows a general view of the bottom of the chambers of the apparatus, a vertical section.

Each chamber of the dewatering-loading apparatus is made of quadratic section AND is connected to the loading pipeline 2. It switches on the loading 3 and discharge 4 devices that seal the chamber when the filling material is dehydrated, the conical sieve 5, the catchment 6 with the drain pipe 7, the annular separator with nozzle 8, supply pipe 9 and outlet 10 from the chamber of compressed air, air supply 11 and transport 12 pipelines.

In the upper part, the chamber is equipped with a conical dispenser 13 of the slurry, an arc screen 14 and an additional catchment tank 15 with a drain pipe 1 b through the drain valve 17 for preliminary dewatering the slurry in chamber 1.

In the lower part, the chamber is provided with a central 18 and side 19 filters made, for example, in the form of perforated leaves. The central filter 18 is connected via valve 9 via pipe 9 to the air supply pipe 11, and side filters 19 are connected to conical sieve 5 and are connected to a catchment tank 6. Ring filters with nozzles 21 are installed for side filters 19 as well as for conical sieves 21 the valve 22 and the pipe 9 are connected to the pipe 11.

The chamber dewatering and charging device contains a drain valve 23 installed in the drain pipe 7, a mechanism 24 for opening the air valve in the discharge device 4 and a valve 25 installed in the pipeline for supplying compressed air to the separator with nozzles 8.

The operation of the apparatus is carried out in the following sequence.

The slurry enters one of the chambers 1 of the apparatus through the pipeline 2 in the upper part. The slurry stream is directed by a cone-shaped distributor 13 to the arc surface of the sieve 4 (made, for example, from the slurry spike grate stream longitudinally located to the stream), where preliminary dehydration (thickening) of the incoming pulp occurs to a moisture content of about 25-30%. The dewatering efficiency is caused by the large dewatering surface of the arcuate surface of the sieve 14. After filtering out due to the resulting centrifugal force, moisture is collected in an additional water collecting tank 15 to collect the filtrate

and then flows through the pipeline 16 when the drain valve 17 is open. in the drain pipe 7.

Pre-dehydrated thus filling material enters the internal cavity of the chamber at atmospheric pressure in chamber 1 (the relief valve on the pipe 10 is open) and the discharge device 4 is closed and the air supply valves 20 n 22,

After the chamber is filled with a wet stowing material, the loading device 3, the pressure relief valves in the pipeline 10 and the drain 17 (from the tank 15) are closed. Pipeline 9 with the valve 20 open, the central filter 18 (the filter element receives high-pressure compressed air from the pipe 11, which squeezes out, for example, a brine filtrate) from the bulk of the filling material through the openings of the side filters 19 (filter elements) and conical sieve slots 5 catchment tank 6 (catchment basin) for collecting the liquid phase. The brine through the drain valve 23 is drained through a drain pipe 7 to the sludge storage. After that, the unloading device opens with a pneumatic shut-off mechanism 24 and dehydrated to a transportable state (humidity 5-6%), the backfilling material enters the transport pipeline 12 with the drain valve 23 closed.

The second stage dewatering process proceeds with a large dewatering area and a small layer of dehydrated material, which predetermines a high dewatering intensity of the filling material.

At the end of the unloading of the bulk of the material from chamber 1, valves 22 and 25 are opened and compressed air is supplied through a piping, purge water 9, to clean the adhered sludge from the adhesives 5, from the annular separator 8 with uniformly mounted nozzles and holes sheet side filter elements 19 - from an annular separator with nozzles 21. In addition, in the process of blowing the conical sieve 5, there is intense aeration of the material, which helps to eliminate possible hang-ups in the chamber and reduces OS screens. Then a pressure relief valve opens in the pipe 10 and at the same time the process of feeding the slurry (pulp) to the apparatus, etc. begins.

Claims (2)

Thus, the full cycle of operation of one chamber of the apparatus consists of loading the source material with the combined process of preliminary dehydration, final dehydration of the material and discharge of the chamber. To carry out a continuous bookmarking process, it is advisable to have three cameras of similar design, each of which alternately takes one of the above processes. The use of the proposed dewatering-loading apparatus will significantly improve operational reliability and expand the field of application of the apparatus (depending on the moisture content of the source material and carry out filling operations in a hydro-pneumatic manner. The productivity and efficiency of the apparatus are improved, the apparatus is improved by square section of the chambers. Formula of the invention Cameras are both an autoloading-loading apparatus that includes at least two cameras, each of which contains loading intramural conduit charging and discharging apparatus conical sieve catchment L and a tank with a drain pipe, | Allen separator with nozzles, Supply pipelines and BHnycj a from the compressed air chamber, air supply and transport pipelines, characterized in that, in order to increase the dehydration rate of the slurry entering the chamber and increase the productivity of the apparatus, each chamber is square and equipped in the upper part a cone-shaped slurry dispenser, an arc strainer and an additional catchment basin with a drain pipe for pre-dewatering the slurry in the chamber, and in the lower chamber provided with a central portion and lateral filters, wherein the filter communicates with the central air supply line, and the side filters are connected to the conical screen and communicated with the water collecting tank. Sources of information taken into account during the examination 1. USSR author's certificate No. 294947, cl. E 21P 15/10, 1967. 2. USSR author's certificate number 688652, cl. E 21P 15/10, 1978 (prototype).