SU1317258A1 - Laboratory furnace - Google Patents

Abstract

The invention relates to laboratory furnaces for investigating the properties of the intumescent material and can be used in the building materials industry. The purpose of the invention is to expand the range of research and increase the reliability of the experiment. The furnace contains a vertical working chamber 1 with chute 2 for feeding material, a burner device 3, fixed in the lower part 73 116 19 a a § f IfM.J

Description

chambers 1 f a precipitator 4 with a hydraulic element 5 and a reversing device 6, In the diverter 2, a muffle 9 is mounted, having an inlet 10 and an upper 11 aperture. A rod 12 extending along the axis of the glass overlaps the outlet hole 11. Into the 2 s inserted The invention relates to the building materials industry, namely, laboratory furnaces to study the properties of the intumescent material, for example perlite.

The aim of the invention is to expand the range of research and increase the reliability of the experiment.

Figure 1 shows the proposed oven, a longitudinal section; figure 2 - plot of heat with a muffle (section aa in figure 1).

The furnace contains a vertical working chamber 1 with a chute 2 for feeding material 5 a burner 3. fixed at the bottom of the chamber 1. Precipitator 4 with a filtering element 5 and a throw-over device 6. Section 7 of the chute 2 is located in precipitator 4 opposite the window 8 connecting the working chamber with a precipitator. In the estrus 2, a muffle 9 is mounted, having an inlet 10 and an outlet hole 11, a Rod 12 passing along the axis of the glass, covers the outlet 11. The stem is hollow and a thermopgf 13 can be mounted into it to control the temperature of obrEbat material.

Under the working chamber 1, a 14 dp collection capacity is set out nevspuchivayush; they are with -inclusions with a folding cap 15, under the precipitator 4 - a capacity 16 with a folding cap 17.

To supply air for combustion to tank 14, a branch pipe 18 is supplied. For removal of exhaust gases from the furnace, precipitator 4 has a branch pipe 19 mounted installed coaxially with the chamber 1 and forming an annular gap 20 with it. The throw-over device 6 in the working position overlaps the upper edge 21 of the working chamber 1. In this muffle 9 put into it, a sample of the rock is metered, maintained for a specified time, and upon completion of the heat treatment, the sample is loaded into the furnace, where the material is expanded and carried away to the precipitator, falls into the tank 16 and is taken to the test vanie. 2 Il.

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The SRI e. Holds the spring 22, one condom mounted on the orbit of the precipitator 4, and the other on the lever 23 hinged on the support 24. To adjust the temperature mode of heating the sample opposite the estrus 2, where the muffle 9 is mounted, a tube is installed 25

The stove works in the following way.

Opening the hinged lid 15, the igniter is introduced into the container 14 and the gas is ignited, which enters the burner 3. After the furnace is warmed up, the air is supplied through the pipe 18 to the combustion and the temperature variable speed is set to 7. A specimen is metered into the chute 2 with the muffle 9 inserted into it, it is kept for a specified time, the heating temperature is controlled as indicated by the thermocouple 13 and corrected by blowing the muffle through the tube 25. At the end of the heat treatment, the rod 12 is lifted and the sample is loaded into the outlet 11. bake. Having fallen into the working chamber 1, the material swells up and is carried away from the combustion products through the windows 8 into the precipitator 4, is discharged into the container 16 and taken out for examination through the folding flap 17. The products of combustion, having passed through the filter element 5, leave the furnace through the gap 20 through the nozzle 19.

After the end of the swelling, the position of the throw-over device 6 is changed: by pressing the free end of the lever 23, the upper edge 21 of the working chamber 1 is opened. In this case, the gases rush to the exit, the filter element is mine. The material adhering to the filter element falls into the container 16.

Non-penetrating inclusions, loose rocks fall out of working

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five

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chambers into tank 14, from where they are taken for further investigation through an opening blocked by a folding claw 15,

The use of the proposed furnace will make it possible to more reliably determine the optimal temperature-rate conditions for the heat treatment of perlites, the properties of the expanded product, depending on these conditions.

Claims (1)

Invention Formula A laboratory furnace to investigate the properties of the intumescent material, including a working chamber with a chute for feeding the material, a burner 72584 a device mounted in the lower part of the chamber with a possibility of movement along its axis, and a precipitator equipped with a filter plate, a reed device and a muffle for preliminary heat treatment of the sample, characterized in that, in order to broaden the range of research and increase the reliability of the perimeter, the muffle is made in the form of a glass with an outlet in its lower part, it is provided with a rod for blocking the outlet orifice and is placed in the chute for supplying the material, and the chute section with the muffle installed in it Position the oven in the entrance area of basins in the precipitator. Editor K. Voloshchuk Compiled by V. Koshelev Tehred L. Oliynyk Proofreader A.Zimokosov Order 2411/35 Circulation 543 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Project St., .4.