WO2012064217A1

WO2012064217A1 - Container for bulk materials

Info

Publication number: WO2012064217A1
Application number: PCT/RU2011/000282
Authority: WO
Inventors: Михаил Николаевич КОЛЬЦОВ
Original assignee: КОЛЬЦОВА, Галина Владимировна
Priority date: 2010-11-11
Filing date: 2011-04-28
Publication date: 2012-05-18
Also published as: RU2444887C1

Abstract

The invention relates to the field of storing bulk materials, in particular grain. The container for bulk materials comprises the following, formed from woven material with a polymer coating: a base, a lateral wall and a top, wherein most of the container height has a nominally conical shape expanding downwards. The top of the container is provided with a hermetic flange. A discharge pipe with a slide valve on the lateral wall passes through the wall into the bottom part of the container. A support for the discharge pipe is mounted on the base inside the container, and pipe diffusers are distributed over the entire base, said pipe diffusers being connected by one end to an annular collector which, in turn, is connected to the discharge pipe. The lower part of the container can be enveloped by a metal fine-mesh netting and a metal sheet which is surrounded and held by constricting rings. The base, as a rule, is protected by a rigid lining.

Description

CAPACITY FOR BULK MATERIALS

The invention relates to the field of storage of bulk materials, in particular grain. A silo for storing grain is known, which is a metal cylindrical container with an amplifier case in the lower part (US patent N ° 3318229, 1967). To ensure the possibility of unloading grain through the unloading unit in the bottom, the tank needs a powerful foundation and additional supports lifting it above the foundation. The disadvantages of the silo are the large capital costs and time to build it, as well as increased material consumption in terms of unit of stored grain.

Silos for storing grain made of a flexible material, in particular a metal mesh (patent GB 1213709, 1970) or polyvinyl chloride (published application WO 99/28578, 1999), are also known. The first of these silos is too complicated because it needs an additional sealing shell. In the second case, the material of the container is not very durable during periodic straightening and compression in changing atmospheric conditions.

US Pat. No. 2730150, 1956, describes a grain silo with flexible walls made of multilayer paper impregnated with bitumen to protect the silo itself and its contents from atmospheric conditions. Such a hopper is even less durable and durable than the previous capacity.

A flexible grain silo made of woven material is known which has breathable surface portions and airtight portions, mainly in the bottom and side of the silo (JP 2000233834, 2000). The silo is designed primarily for transporting grain and is unsuitable and inconvenient for stationary storage.

A common drawback of all the mentioned containers is their narrow purpose: only as a container for bulk materials, in particular grain. For any grain processing (drying, cooling, moistening, etc.) before laying it for storage or during storage, in most cases, grain is reloaded into specialized apparatuses and containers and reloaded after processing.

The proposed design of the tank allows to significantly reduce the cost of drying, cooling and storage of grain. Its advantages are versatility, tightness, ease of manufacture, low capital costs for quick installation on site, environmental friendliness. According to the invention, the container for bulk materials contains a bottom made of woven material with a polymer coating, a side wall and a top, and the container at most of its height has a nominally conical shape that extends downward. The top of the tank is equipped with a sealed flange. An unloading pipe with a gate on the side wall passes through the wall to the bottom of the tank. A support for the discharge pipe is installed on the inside of the tank, and diffuser pipes are distributed around the bottom, connected at one end to an annular collector, which, in turn, is connected to the discharge pipe.

To protect against accidental mechanical damage and, especially, from rodents in the case of grain storage, the lower part of the tank can be wrapped with a fine-mesh metal mesh and a metal sheet that is covered and held by tightening rings. The bottom is usually protected by a rigid lining.

The invention is illustrated by drawings, where in FIG. 1 shows the location of structural elements and assemblies on the bottom of the tank. In FIG. 2 schematically shows a general view of a container for bulk materials. A container with protective elements in the lower part is shown in FIG. 3. In FIG. 4 shows a schematic diagram of condensation cooling of grain in a container according to the invention.

The container for bulk materials (Fig. 1, 2) contains the top 1, side wall 2 and the bottom 3 of a woven material with a polymer coating, which allows you to isolate the contents of the container from exposure to the external atmosphere. The top 1 of the tank is equipped with a sealed flange 4. On the bottom 3 there is a support 5 for the discharge pipe 6, and diffusers 7 are distributed around the bottom, connected at one end to an annular collector 8, which, in turn, is connected to the discharge pipe 6 with gate 13.

In FIG. 3 protective elements of the tank are indicated by the numbers 9 (metal mesh) and 10 (metal sheet). The metal, preferably steel, sheet 10 may be a single continuous sheet covering the entire periphery of the container or may be composed of several short sheets, but also covering together the entire periphery of the container. For a snug fit to the side wall 2 of the metal sheet 10, the latter is surrounded by one or more tightening rings 1 1. Position 12 in FIG. 3, a rigid, preferably metallic, underbody lining is indicated. The liner 12 is needed to protect the bottom of the container and its contents from damage by rodents.

The process of loading and unloading containers is quite clear from the design of the tank itself and does not need a detailed description. The tightness of the container makes it possible to use the so-called "condensation" type of drying (environmentally friendly) for drying and cooling grain, when the drying agent (air) moves in a closed loop. The drying agent moves in a closed circuit according to the principle of a domestic air conditioner. From the drying chamber, warm air moistened with moisture is pumped to a heat exchanger-cooler, where it is rapidly cooled from 35 to 5 ° С. Water passes from a gaseous state to a liquid state, and condensation forms. It is diverted outward, beyond the limits of a closed loop. Then dry cold air enters the hot heat exchanger and heats up. Heated to 50 ° C, the air is returned back to the drying chamber.

If the task is not to dry, but to cool the material, then the hot heat exchanger is excluded from the circulation circuit. The cooling agent moves in a closed loop, without communication with the heat of the atmosphere (Fig. 4).

In both of these processing processes, the discharge pipe 6 serves to supply circulating air through the annular collector 8 and diffuser pipes 7 under the mass of grain filling the tank. When this gate 13 on the side wall of the discharge pipe 6 is translated into the closed position. To empty the container through the discharge pipe 6, the gate 13 is opened

The optimum height of the grain storage tank is approximately 6–8 m, the base diameter is 5–8 m, and the capacity is 100–200 tons, depending on the size of the container and the specific gravity of the bulk product.

An advantage of the invention is its versatility, which allows the entire process of drying, cooling and storage to be organized in the same container. There is no need to transfer the product from one specialized container to another, which increases costs and damages the grain.

Claims

CLAIM

1. A container for bulk materials containing a bottom made of woven material with a polymer coating, a side wall and a top, and the tank at a large part of the height has a nominally conical shape that extends downward, while the top of the tank is equipped with a sealed flange to the bottom part of the container through the wall passes the discharge pipe with a gate on the side wall, a support for the discharge pipe is installed on the bottom of the container, and diffuser pipes are distributed around the bottom, connected at one end to the ring collector, to tory connected to the discharge pipe.

2. The container according to claim 1, characterized in that in the lower part it is wrapped with a fine-mesh metal mesh and a metal sheet that surround the tightening rings, and the bottom is protected by a rigid lining.