RU227761U1 - CLAY THROWER INSTALLATION - Google Patents

Abstract

The utility model relates to installations for throwing bulk materials, namely to installations for throwing solid non-metallic materials (bentonite clay). The technical result achieved when implementing this thrower is the expansion of the arsenal of technical means in the field of the mining industry, simplifying the processes of transportation and storage of solid non-metallic materials (bentonite clay) using a throwing installation. As a result of the implementation of the claimed utility model, the formation of a cone of bentonite clay with reduced raw material humidity is achieved due to the movement of clay in the air and fractional separation of the raw material. The specified technical result is achieved due to the fact that the installation for throwing bentonite clay has a snail-shaped body with a straight discharge pipe, an impeller made in the form of a disk with rectangular working blades rigidly fixed to the impeller and an electric drive with a belt transmission, while the optimal size of the thrown lump depends on the radius of the body and the number of working blades and is described by the formula

,

where B is the size of the lump, mm;

R - body radius, mm;

n - number of blades, pcs.;

k is the coefficient of influence of the body geometry on the lump size; the value of the coefficient is limited to the range (k=0.5-2.0).

Description

Field of technology

The utility model relates to installations for throwing bulk materials, namely to installations for throwing solid non-metallic materials (bentonite clay).

Prior art

A thrower of bulk products is known from the prior art, patent RU 2301770, published on 27.06.2007. The thrower of bulk products includes a leading, driven, pressing, tensioning and accelerating drums, an endless belt enveloping them, a loading hopper and an accelerating drum (with an auger installed inside). The invention provides for an increase in the throwing range of pieces of stowage material.

A significant drawback of the known thrower is that when feeding bentonite clay, which has a high moisture content, the endless belt will become smeared, stick to the drums, as a result of which the belt may slip and the thrower will stop.

Patent RU 2775141, published on 28.06.2022, describes a method for extinguishing ground fires with soil using a mobile soil thrower. The soil thrower comprises a working element with throwers, a drive for controlling the working element, a guide casing, a mechanism for returning to the initial position, and is equipped with a mechanism for reducing the excavation depth. The throwing disk is mounted on the shaft of the auger for feeding soil at its proximal end and is closed by a guide casing made with the possibility of rotation in the plane of rotation of the working element. The soil thrower makes it possible to increase the efficiency of extinguishing ground fires with soil.

The main disadvantage of this technical solution is the auger mechanism for feeding material to the throwing disk, since in order to throw, the feeding mechanism must drill into the soil, which has a heterogeneous structure and different fractions, which can lead to non-uniform throwing.

The closest in technical essence and achieved result to the proposed utility model is the grain thrower disclosed in patent RU 2250144, published on 27.08.2003, which consists of a vertically mounted paddle drum, in the central part of which there is a receiving disk surface, forming by means of a conical, a continuous stepped surface with a lower bearing disk. The drum blades are made of two main fixed and additional movable blades connected to each other by a hinge device. The main blade is located in the radial direction and in the longitudinal direction consists of triangular rectangular parts. The technical result is a decrease in grain injury, an increase in the quality of material cleaning during throwing.

The disadvantage of this design when throwing solid non-metallic materials (bentonite clay) is the movable (using a hinged joint) device of the blades and the receiving conical surface. Bentonite clay, having high humidity and a particle size of 50-100 mm, will stick to the disk surface, create obstacles in the operation of the movable part of the blades and the loading opening, which leads to a decrease in the efficiency of work and a complete stop.

Disclosure of a utility model

The task, which the declared technical solution is aimed at solving, is to create equipment that will allow throwing clay materials that have high humidity and are prone to sticking to the working surfaces of the unit, up to the point of stopping the operation.

The utility model will eliminate the need for loading and moving solid non-metallic materials (bentonite clay) by motor transport from the processing (enrichment) line to the storage location.

The technical result achieved by implementing this thrower is the expansion of the arsenal of technical means in the field of mining industry, simplifying the processes of transportation and storage of solid non-metallic materials (bentonite clay) using throwing.

As a result of the implementation of the claimed utility model, effective movement of material and formation of a cone of bentonite clay with reduced density, reduction of raw material moisture due to movement of clay in the air and air grooves in the finished cone, fractional separation of raw materials are achieved.

The specified technical result is achieved due to the fact that the installation for throwing bentonite clay has a snail-shaped body with a straight discharge pipe, a working wheel made in the form of a disk, and rectangular working blades rigidly fixed on the working wheel and installed at an equal distance from each other. The installation is equipped with an electric drive with a belt transmission, the rotation speed of the working wheel with blades is 750 rpm, while the optimal size of the thrown lump depends on the radius of the body and the number of blades and is described by the formula

,

where B is the size of the lump, mm;

R - body radius, mm;

n - number of blades, pcs.;

k is the coefficient of influence of the body geometry on the lump size; the value of the coefficient is limited to the range (k=0.5-2.0).

Brief description of drawing figures

The essence of the utility model is explained by drawings, where:

Fig. 1 shows a cross-section of the bentonite clay throwing apparatus;

Fig. 2 - a longitudinal section of the bentonite clay throwing installation.

An embodiment of the utility model

The installation for throwing bentonite clay includes a funnel-shaped loading hopper (1), a snail-shaped body (2) with a straight discharge pipe (3), a working wheel made in the form of a disk (4) with installed rectangular working blades (5), an electric drive (6) with a belt transmission (7) (see Fig. 1).

Bentonite clay is fed into the loading hopper, then captured by the working blades and under the action of centrifugal force passes to the edge of the body and is thrown along the guide surface of the discharge pipe. During the flight, the heavier (larger) clay pieces fly further, the lighter (smaller) ones fly closer, separation by fractions occurs and a cone with a divided granulometric composition is formed. During the flight, the surface moisture of the raw material is separated, which in turn reduces the initial moisture of the clay.

The optimal size of the thrown lump depends on the radius of the body and the number of blades and is described by a formula derived empirically:

,

where B is the size of the lump, mm;

R - body radius, mm;

n - number of blades, pcs.;

k is the coefficient of influence of the body geometry on the lump size; the coefficient value is limited to the range (k=0.5-2.0).

Electric drive with belt transmission, the rotation speed of the impeller with blades is 750 rpm for throwing solid non-metallic materials (bentonite clay).

Claims (6)

A bentonite clay throwing unit characterized by the fact that it contains a snail-shaped body with a straight discharge pipe, a working wheel made in the form of a disk with rectangular working blades rigidly fixed to the working wheel and an electric drive with a belt transmission, while the optimal size of the thrown lump depends on the radius of the body and the number of working blades and is described by the formula , where B is the size of the lump, mm; R – body radius, mm; n – number of blades, pcs.; k is the coefficient of influence of the body geometry on the size of the lump, the value of the coefficient is limited by the range (k=0.5-2.0).