RU2325993C1 - Device for preparation of dry construction mix - Google Patents

Abstract

FIELD: construction engineering.

SUBSTANCE: invention relates to construction engineering, in particular, to production of construction materials and products. The said device incorporates a frame with a hopper for sand placed thereon, a hopper for cement, a comb and a conveyer belt. The comb incorporates a drive of reciprocating motion and is arranged below the hopper for cement in the additional frame guides that allows varying the comb inclination angle and is mounted between the hopper for sand and the hopper for finished products. The comb can be made in the form of chutes with holes all along their length. The comb inclination angle does not exceed 45°.

EFFECT: uniform mix thanks to a uniform distribution of its components.

3 cl, 4 dwg

Description

The present invention relates to the field of construction, in particular to the production of building materials and products.

A known installation for preparing a mixture for building products, including a frame with a mixing chamber mounted on it, a feed hopper for a filler and a feed hopper for cementing material (z. No. 93003747, "Installation for preparing a mixture for building products." Published 1995.04.20 )

The disadvantage of this installation is the inability to prepare a homogeneous mixture and the uniform distribution of its components.

The closest technical solution to the proposed one is a device for preparing a dry building mixture (RU 2031787, 03/27/1995, class B28C 9/00), consisting of a frame with a sand bunker, a cement bunker, a comb and a conveyor belt mounted on it.

The disadvantage of this technical solution is the impossibility of preparing a homogeneous dry mortar on this equipment and, in addition, the process of preparing the mixture on this equipment is quite complicated.

The objective of the device is to simplify the process of preparing a dry building mixture and improve its quality.

The technical result consists in achieving uniformity of the mixture due to the uniform distribution of its components.

The technical result is achieved by the fact that in the known device for preparing a building mixture, comprising a frame with a sand hopper, a cement hopper, a comb and a conveyor belt, according to the invention, the comb has a transverse reciprocating drive, placed under the cement hopper in guides of an additional frame with the possibility of changing the angle of inclination and is installed between the sand hopper and the hopper for the finished mixture. In this case, the comb is made in the form of trays with holes along the length, and the angle of inclination of the comb is not more than 45 °.

The difference is the angle of inclination of the comb, which is not more than 45 °.

The invention is illustrated by drawings, where

figure 1 shows a device for preparing a dry building mixture, side view;

figure 2 is the same, a top view;

figure 3 is a section along aa;

figure 4 - deepening combs in the layer, side view.

A device for preparing a dry building mixture includes a frame 1 with a sand hopper 2 mounted on it and a conveyor belt 3 with a drive 4, the device having a comb 5 with a cement hopper 6 mounted on it and a lateral movement drive 7, with a comb 5 and drive 7 are interconnected and installed between the sand hopper 2 and the finished hopper 8 on an additional frame 9 with guides 10. The comb 5 is made in the form of trays with holes 11 in length.

A device for preparing a dry building mixture works as follows.

Pre-prepared and separately prepared components, sand and cement, are loaded into a sand bin 2 and a cement bin 6, respectively. When you turn on the drive 4, simultaneously with the start of movement of the conveyor belt 3, the hole of the hopper 2 with sand opens, while a layer of sand with a thickness of h (Fig. 4) is distributed across the width of the conveyor belt 3 during its movement.

When the sand layer approaches the comb 5, the drive 7 is turned on and the opening of the hopper 6 opens. The comb 5 divides the sand into separate layers, the thickness of which is equal to the step of the comb t, and ensures the introduction of cement between the sand layers (Fig. 3). A uniform distribution of sand and cement occurs with the reciprocating movement of the comb in the transverse direction with an amplitude equal to the pitch t of the comb 5. The holes 11 along the entire length of the trays of the comb 5 allow the formation of the upper final layer of the mixture. The finished mixture is poured into the hopper 8.

Comb 5 is mounted on guides 9 with rail 10, which allows you to change the angle of inclination of the comb (figure 4). A change in the angle of inclination leads to a change in the depth of penetration of the comb into the stacked sand layer, which affects the distribution of the components of the mixture and, therefore, its uniformity. The angle of inclination of comb 5 can be no more than 45 degrees. With a larger angle of inclination of the comb, the uniformity of the laid layer of the mixture on the conveyor belt will decrease and the operation of the device will become less efficient.

The current model of the device was made in the Construction Pavilion of the Department of "Production of Building Structures" of Tver State Technical University and showed the effectiveness of the proposed development.

Claims (3)

1. A device for preparing a building mixture, comprising a frame with a sand hopper, a cement hopper, a comb and a conveyor belt, characterized in that the comb has a transverse reciprocating drive, placed under the cement hopper in the guides of the additional frame with the ability to change its angle of inclination and is installed between the sand hopper and the hopper for the finished mixture. 2. The device according to claim 1, characterized in that the comb is made in the form of trays with holes along the length. 3. The device according to claim 1, characterized in that the angle of inclination of the comb is not more than 45 °.

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