RU169754U1 - FLOW-THROUGH AIR MIXER FOR THE PRODUCTION OF DISPERSED-REINFORCED MIXTURES - Google Patents

Abstract

The utility model relates to the field of production of building materials, namely, equipment for producing disperse-reinforced mixtures in the production of high-quality fiber-reinforced concrete. The task to which the utility model is aimed is to improve the quality of the dispersion-reinforced mixture based on fiberglass by increasing the degree of fiber fiber fluffing. This is achieved by the fact that the countercurrent air mixer for the production of dispersion-reinforced mixtures, containing a housing made in the form of horizontally about the confuser with inclined nozzles 11 introduced tangentially into the housing 5, the supply pipe 1 with loading hoppers and air nozzles 8 and 9, from the discharge side, the housing has the form of a hollow cylinder with radial holes on the forming pipe with a loading hopper 14 and an air nozzle 13 In the proposed solution, a rotary distributor 2 with a cone-divider 3 and outlet openings formed by the blades is placed on the supply pipe 1.

Description

The utility model relates to the field of production of building materials, namely, equipment for producing dispersively reinforced mixtures in the production of high-quality fiber concrete.

Known pneumatic mixer of multicomponent dry construction mixtures [RF patent for utility model No. 115682 B01F 5/00. Air mixer of multicomponent building mixtures / Orekhova T.N., Uvarov V.A., Gordeev S.I., Kachaev A.E .; applicant and patent holder Belgorod, state technologist, un-tim. V.G. Shukhov - publ. 05/10/2012, Bull. No. 13. - 2 s]. The air mixer contains a housing made in the form of a horizontal confuser having, at a larger end, closed by a lid with the formation of a pressure supply cavity, inclined nozzles and connected to it in the central part of the supply pipe of the air inlet support pipe, with additional air blowing and loading bunkers.

The disadvantage of this device is the formation of stagnant zones in the housing and the low quality of the resulting mixtures.

The closest technical solution adopted for the prototype is a countercurrent air mixer for the production of disperse-reinforced mixtures [RF patent for utility model No. 141488 B01F 5/00, Orekhova TN, Uvarov VA, Klyuev SV, Kachaev A.E .; applicant and patent holder Belgorod. state technologist, un-tim. V.G. Shukhov - publ. 06/10/2014, Bull. No. 16. - 2 s]. The air mixer contains input nozzles with an additional air supply, a loading hopper on the discharge side, a hollow cylinder with holes, and a housing in the form of a horizontal confuser with a mixing zone in which the nozzles are located.

The following features of the prototype coincide with the design features of the utility model: a casing made in the form of a horizontal confuser with inclined nozzles introduced tangentially into the casing, a supply pipe with loading hoppers and air nozzles. In addition, from the discharge side, a hollow cylinder with openings on the forming pipe with a loading hopper and an air nozzle is installed in the housing.

The disadvantage of this mixer is the low quality of the mixtures. This is due to the low degree of fiber fiber swelling.

The problem the utility model aims to solve is to improve the quality of a dispersion-reinforced fiber-based mixture by increasing the degree of fiber fiber fluffing.

This is achieved by the fact that the counter-current air mixer for the production of disperse-reinforced mixtures contains a housing made in the form of a horizontal confuser with inclined nozzles introduced tangentially into the housing, a supply pipe with loading hoppers and air nozzles. On the unloading side, a housing having the form of a hollow cylinder with openings on the forming pipe with a loading hopper and an air nozzle is installed. In the proposed solution, a rotary distributor with a cone-divider and outlet openings formed by the blades is placed on the feed pipe.

The essence of the utility model is illustrated by drawings, in which Fig. 1 shows a diagram of a counter-flow pneumatic mixer for the production of disperse-reinforced mixtures (side view), Fig. 2 is a section A-A in Fig. 1 (longitudinal section of a rotary distributor), Fig. 3 is a section BB in figure 1.

The countercurrent air mixer for the production of disperse-reinforced mixtures has a feed pipe 1, on which a rotary distributor 2 with a cone-divider 3 and outlet openings formed by blades 4, for example, of an arcuate shape, is placed. The feed pipe 1 is placed in the housing 5, made in the form of a horizontal confuser. On the supply pipe 1 perpendicular to its longitudinal axis, input pipes 6 are installed with loading hoppers 7. The input pipes 6 are placed evenly along the length of the supply pipe 1, and their number depends on the number of supplied mixture components, in our case there are three.

To supply compressed air, an air nozzle 8 was introduced into the supply pipe 1 from the end, and air nozzles 9 along the length of the supply pipe. They are arranged so that their working outlets are located on the longitudinal axis of the supply pipe 1 to ensure ejection. At the same time, due to the pressure difference p ₁ and p in the air nozzles 8 and 9, components are already mixed in the supply pipe 1 (swelling zone) and their further transportation.

The housing 5 is connected to the supply pipe 1 in the central part of the larger end face 10 of the confuser. Through the larger end face 10, air inclined nozzles 11 are tangentially introduced into the housing 5. The inclined nozzles 11 are introduced in such a way that their longitudinal axes intersect at a certain angle with the axes of the outlets of the supply pipe 1.

The internal cavity of the housing 5 is conditionally divided into zones: fluffing (internal cavity of the supply pipe), countercurrent interaction (the area of intersection of the axes of the outlets of the supply pipe and the axes of the inclined air nozzles), transportation and unloading of the finished mixture.

In the inner cavity of the housing 5 from the side of the discharge zone, a pipe 12 is installed, having the form of a hollow cylinder, which is located in the zones of countercurrent interaction and transportation. On the pipe 12 there are made radial holes uniformly located on the generatrix. To supply compressed air, the pipe 12 is equipped with an additional air nozzle 13 mounted coaxially with the axis of the pipe 12.

In addition, the pipe 12 is equipped with an additional feed hopper 14 for supplying a binder, such as cement. The feed hopper 14 is mounted on the nozzle 12 so that the cement supplied from it enters the compressed air supply zone through the air nozzle 8.

Countercurrent air mixer for the production of dispersion-reinforced mixtures works as follows.

The components of the dry dispersion-reinforced mixture, for example, fiber, sand and additives, are fed from the loading bins 7 into the inlet nozzles 6, and then due to the supply of compressed air through the air nozzles 8 and 9, the working outlets of which are located on the longitudinal axis of the supply pipe 1 and provide ejection, components are accelerated in the supply pipe 1.

At the same time, mixing and transportation takes place through the feed pipe 1. The design of the rotary distributor 2 allows you to direct the flow of components of the disperse-reinforced mixture supplied by air under pressure (P _cm ) from the feed pipe 1 to the internal cavity of the housing 5. The cone-divider 3 the flow of components of the disperse-reinforced the mixture is divided into components and sent by the blades 4 to the sides of the outlet openings four (or more). In this case, the whole structure rotates, which, in turn, ensures the distribution of dispersed-reinforced mixture components in the feed zone by 360 °, which contributes to an increase in the area of interaction of the components to obtain a high-quality mixture with a high degree of fluffing, and also reduces the likelihood of stagnation in the working countercurrent air mixer chamber.

Further, the material falls into the countercurrent interaction zone of the housing 5, where it is captured by air-vortex flows created by the air nozzles 11 with the intersection of the exit axes tangentially installed in the larger end 10 of the housing 5.

From the side of the unloading zone, a binder is fed into the internal cavity of the housing 5, simultaneously with the supply of dry components to the inlet nozzles 6, through the radial holes on the installed nozzle 12. The binder is fed through the feed hopper 14. The air nozzle 13 facilitates the transport of material through the nozzle 12 to the interaction zone with components. The binder, passing through the radial holes of the pipe 12, increases the concentration of the mixture in the zone of countercurrent interaction, increases the adhesion of the components of the mixture in this zone and improves the quality of the resulting mixture.

At the same time, the pressure values of compressed air in the supply pipe and the additional air nozzle - p ₁ and in the air nozzles and inclined air nozzles - p are in the ratio p ₁ = 2p, which contributes to better capture and mixing of components already in the supply pipe, which improves the quality of the dispersed -reinforced mixture.

After that, the finished dry dispersion-reinforced mixture arrives at the place of packaging.

Thus, the proposed design of a countercurrent air mixer for the production of disperse-reinforced mixtures can improve the quality of the dispersion-reinforced mixture based on fiber fibers by increasing the feed zone of the mixture components to 360 °, which contributes to the production of a high-quality mixture with a high degree of fluffing of the fiber and increasing the area of interaction components.

Claims (1)

Countercurrent air mixer for the production of disperse-reinforced mixtures, comprising a housing made in the form of a horizontal confuser with inclined nozzles introduced tangentially into the housing, a supply pipe with loading hoppers and air nozzles, a hollow cylinder with radial openings on the generatrix installed on the discharge side a nozzle with a loading hopper and an air nozzle, characterized in that a rotary distributor with a cone-divider and outlet openings is placed on the supply pipe tii formed by the shoulder blades.

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