SU1617286A1 - Refrigerator for loose material - Google Patents

Abstract

The invention relates to devices for cooling bulk material. The purpose of the invention is to intensify the cooling process and increase the efficiency of the use of cooling air. For this, the refrigerator contains an air-permeable partition, installed with the possibility of reciprocating movement. The latter is made in the form of hollow grates with a relief working surface of porous metal, the pore size of which (20-100 µm) is less than or equal to the minimum particle size of the cooled material. The protrusions and depressions of the relief partition are oriented along the longitudinal axis of the refrigerator. The cavities of the elements are divided in length into sections by transverse partitions with adjustable diaphragms and connected by an elastic duct to the air supply duct, the latter being connected to the first section at the loading end of the refrigerator with the most heated material. 2 Il.

Description

The invention relates to devices for cooling bulk material, such as expanded clay, cement clinker, and can be used in the building materials industry.

The aim of the invention is to intensify the cooling process and increase the efficiency of the use of cooling air.

FIG. 1 shows the scheme of the refrigerator; in fig. 2 is a section A-A in FIG. one.

The refrigerator consists of a closed case 1, inside of which there is an air-permeable partition 2, formed from grates, the working surface of which, in contact with the cooled material 3, is made of a continuous porous metal and has a wavy shape in cross section with protrusions and depressions. The working surface rests on transverse partitions 4 in which there are holes 5 with adjustable diaphragms 6. The transverse partitions 4 divide hollow grates into the (under-axle space) section 7. The section from the side of the loading end, to which the most heated material flows, is joined by elastic air blower 8 with air duct 9.

The protrusions and depressions of the grate partitions are oriented along the longitudinal axis of the refrigerator. The pore size of the MenbHJe metal or equal to the minimum particle size of the cooled material. Through the movable ball bearings 10, the partition frame 11 rests on the body of the refrigerator. The brackets 12 are attached to the rams. To which are attached the ha of the 13th crank drive 14 is connected. The refrigerator is coupled with the discharge end of the furnace 15 of the furnace 15.

The refrigerator works as follows.

From the Varshui furnace 15, hot material 3 enters the work surface.

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grates 2, into the cavity of which, through the duct 8, cooling air is injected. The air passes through the pores of the working surface and material 3. By taking heat away from the cooled material, the air heats up and enters the combustion into the furnace 15. By changing the living cross section of the diaphragms 6, it is possible to achieve optimum air flow along the length of the hollow grates. Greater air flow should be maintained in the first section, which receives the most heated material 3.

Under the action of the actuator 14, through the bars 13 and the brackets 12, the grate reciprocates on the supports 10, and the acceleration of the element when moving in the direction of agitating material is less than during the reverse course. As a result, the cooled material I .epe is positioned relative to the working surface of the elements in a given direction. I Porous heat-resistant steel, carbon steel and steel can be used for the partition. The pore size is 20-100 microns. With pore sizes less than 20 µm I, the aerodynamic resistance of the lattice i exceeds the accepted values of 100-150 mm of water. Art., which significantly reduces its throughput. With pore sizes greater than 100 microns, it is significantly reduced; lattice strength (less than 3 kg / mm) and po; the probability of accumulation in the upper layers of the pores of the lattice of the fine fraction of the cooled material is increased. : Execution of an air-permeable partition of a wavy profile with the location of protrusions and depressions along the longitudinal

refrigerator axles, increasing con-plonlad; The working surface cycle with cooled I material improves its transportation to the I discharge unit and the cooling efficiency.

The working surface profile of porous metal is easy to use: and, providing the necessary rigidity of the structure, allows to increase the living section; partitions, to intensify the process

cooling, prevent material from spilling into the sub-grid space, and efficient use of cooling air Considerable (ROU-150 mm water. Art.) compared with the existing lattice design (10-15 mm water. Art.) and a layer of cooled material (80-120 mm). The aerodynamic resistance of the working surface of the refrigerator reduces the effect of shunting the air flow from the instability of the layer, ensures equalization of the flow rate of the cooling air over the entire area of the working surface of the grid, which increases the efficiency of lzovani cooling agent.

A large number of small pores (up to 10 cm / cm -) in the working surface

contributes to the creation of a layer of air in the zone of contact with the material to be cooled and to reduce the coefficient of friction and wear of the working surface.

The use of a working surface made of metal with small pores reduces the speed of movement of cooling air in the layer of the cooled material and the likelihood of material particles being carried into the surrounding medium, significantly simplifies aspiration devices. With adjustable diaphragms, the material is optimally cooled by the redistribution of the cooling air pressure in the sections of the hollow grates. The elimination of auxiliary mechanisms transporting material spillage from the sublattice space makes it possible to reduce the height of the refrigerator and, accordingly, the height of the supports of the rotary kilns.

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Claims (1)

Invention Formula A fridge for bulk material containing an air-permeable partition of the grates with a perforation, LI and depressions installed with the possibility of reciprocating and connected to the under-calf space from the side of the loading end of the refrigerator is an air supply pipe characterized in that the cooling process and increasing the efficiency of the use of cooling air, the grate bars are made of floor m, the protrusions and troughs of the grate are oriented along the longitudinal axis of the refrigerator, and the working surface of the grate solid of porous metal, the pore size of which is less than or equal to the minimal size of the particles of the material being cooled, while the space under the grate is divided into sections by transverse partitions with adjustable diaphragms. /four 1 eight