SU1328209A1 - Apparatus for continuous heating of concrete mix - Google Patents

Description

The invention relates to the construction industry and can be used in the construction of monolithic and igotovoy prefabricated structures for heating the concrete mix in the process of its laying in the formwork.

The purpose of the invention is to improve the quality of the concrete mix and performance.

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1 shows the device

for continuous heating of the concrete mix (fixed wall of the chamber is not shown) J in figure 2 - view A in figure 1; on fig.Z - transporting device plan; figure 4 - slash, eBB b fig.Z.

The device consists of a heat-insulated chamber 1, on which a feed hopper is installed. 2, equipped with a metering mechanism 3 and a vibrator 4. Two opposite beads 5 of the chamber 1 are openable and have an L-shape. The boards 6 .and 7 of camera 1 are fixed. L-shaped beams 5 smaller shelf fixed to the fixed, board 6 with noMoetbw hinges 8. On the opener

 The T-shaped beads 5 of the chamber 1 are fixed to the concrete mix on each vibrola transporting device 9 in the form of trough-shaped troughs along the movement of the concrete mix. The mechanism 10 for changing the angle of inclination of the trays is made in the form of a lever-mating system consisting of levers t1, maternal suspensions 12 hinged to brackets 13 rigidly fixed on L-shaped opening sides 5, lanyards 14, hinges 15 mounted on the ends of the heads 11, to which the glands 16 with vibrators 17 are attached. The hinges 15 connecting the levers 11 of the lower trays 9 are connected to the lanyards 18, the lower ends of which are attached to the brackets 20 through the shock absorbers 19 and the hinges 15 and 21 are rigid, backlash-free. This increases the efficiency of the vibrators 17. The trays 9 are made of sheet steel, and their inner surface is electrically insulated, for example, with a textolite 22. Angled electrodes 23 are installed on the base of the tray 9. In the interlotting space of chamber 1, infrared sources are fixed radiation in the form of heaters 24. To the discharge chute 25 sec is fixed and on

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With the vibrator 26, two swiveling vibration leakages 27 and 2B are hinged.

The device works as follows.

By means of 24: 1 conditions, the internal volume of chamber 1 is heated up to 60 ± on the internal surfaces of the walls of chamber 1.

By means of mechanization, for example, a crane with a bucket, the concrete mixture is fed into the hopper 2. While simultaneously turning off the vibrators 17 and 26 of the rotary leaks 27 and 28, applying voltage to the electrodes 23 from -; the damper of the metering mechanism 3 closes. The concrete mixture enters the trays 9, while moving along them is simultaneously electrically heated by electrodes 23 and heated by infrared rays from the heating elements 24,

The intensity of the flow of concrete. the mixture is controlled by the dispensing mechanism 5, 3, and the uniformity of its passage through the trays 9 is mechanized. change the angle of inclination of the throats 10 by rotating the turnbuckles 14 and 18. It should be noted that

five

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otke is different. The mobility and, consequently, the speed of movement of the concrete mix are different (ceteris paribus); In order to ensure the same speed of movement of the concrete mix on all trays 9, the angle of the trays 9 is adjusted in height by rotating the turnbuckets 14. The vibratory impact from the vibrators 17 through the joints is 16 hinges. 15 and the rachags 11 are transferred to the heating trays 9. The concrete mixture, passing through the cascade of the trays 9, is subjected to intense vibroactivation and heating, moving from one tray 9 to another (the height of the pad is up to 0.5 m), is mixed, thus achieving uniformity temperature along the height of the cross section of its layer in the vibrating channel and delamination from the action of vibration is excluded.

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The temperature of the inner surface of chamber 1 and the concrete mixture is controlled by means of thermal sensors (not shown), with which chambers 1 and each tray 9 are equipped, by means of appropriate instruments.

The concrete mixture is heated to a temperature of 80-96 ° C through heat 25, 27 and 28

1328209

fits directly into the reversal of the position of the rotary leak splint. The distribution of concrete mix 27 and 28. on the formwork is carried out by

figure 1

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Editor M; Blanar

Compiled by V. Tikhonov

Tehred L. Serdyupkova; Proofreader A. Zimokosov

Order 3437/30 Circulation 524Subscription

VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

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Claims (3)

1. A DEVICE FOR CONTINUOUS HEATING OF A CONCRETE MIX, containing a rectangular chamber with a loading hopper, an unloading estrus, transporting inclined trays staggered with corner electrodes installed inside and staggered along the height on two opposite walls and a mechanism for changing the angle of the trays, distinguishes. Furthermore, in order to improve the quality of the concrete mixture and productivity, the device is equipped with infrared emitters installed between the trays, the camera is made of rigidly fixed on the basis of opposite sides, and L-shaped boards placed between them ·, * a smaller shelf articulated to one of the fixed sides, and the mechanism for changing the angle of inclination of the trays - in the form of a lever-pendulum system. 2. The device according to claim 1, characterized in that each tray in the direction of movement of the concrete mixture is made tapering. 3. The device according to claim 1, characterized in that the pendulum system is made in the form of pendulum suspensions, one end of which is pivotally connected to the tray, the other is pivotally connected via an arm to the L-shaped side and connecting the trays: individual rods with lanyards, the lower end of which through the console mounted on an L-shaped board. . SU,.,. 1328209