SU1386315A1 - Arrangement for mixing and spraying multicomponent materials - Google Patents

Abstract

The invention relates to devices for mixing and spraying flowable materials and can be used for blending and dispersing liquid and bulk materials, as well as for spraying filled thermal insulating, for example, polyurethane foam coatings. The purpose of the invention is to improve the quality of mixing and spraying of multicomponent materials. For this, the mixing chamber is filled in the form of cylindrical cavities evenly distributed around the circumference, coaxially to the body. At the same time, the radial channels for supplying components and tangential channels for supplying compressed air are connected to each cylindrical cavity, and the discharge nozzles are installed along the axis of the cylindrical cavities. The separator is made in the form of guide plates curved along a logarithmic spiral, one ends of which are joined in the center of the axial channel, while others are brought out and directed to the outlet nozzles. The opposing streams of liquid components are split against each other, mixed together by a swirling stream of compressed air and sprayed through nozzles inclined to the axis of the housing. zp f-ly, 2 ill. with | Q (L

Description

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The invention relates to devices for mixing and disintegrating flowable materials and can be used for mixing and spraying liquid and granular materials, as well as for spraying filled thermal insulating, for example, polyurethane foam coatings.

The purpose of the invention is to increase the quality of mixing and spraying of multicomponent materials.

Fig. 1 shows a device for mixing and spraying multicomponent materials, a slit; figure 2 - section aa in figure 1.

The device comprises a cylindrical body 1 with an axial channel 2 for feeding bulk material, annular cavities 3 and 4 for liquid components of materials, an annular cavity 5 for compressed air, and exhaust nozzles 6. In chamber 1 there is a mixing chamber in the form of cylindrical cavities 7 evenly distributed throughout circumference, coaxially to the housing 1. The annular cavities 3 and 4 are connected with each cylindrical cavity 7 by radial diametrically located channels 8 and 9. The annular cavity 5 communicates with each cylindrical cavity 7 tangent 10 channels

Exhaust nozzles 6 are installed along the axis of the cylindrical cavities 7, and their axes are inclined to the axis of the housing 1. In the axial channel 2 there is a separator 11, made in the form of guide plates curved along a logarithmic spiral, one ends of which are joined in the center of the axial channel 2, and the others are led outside and directed to the discharge nozzles 6. The number of guided plates is equal to the number of discharge nozzles. In the housing 1 there are openings 12 and 13 for the supply of liquid components of materials into the annular cavities.

3 and 4 and the opening 14 for supplying compressed air to the annular cavity 5.

The device works as follows.

Liquid material components are supplied under pressure from metering pumps (not shown) through openings 12 and 13 into annular cavities 3 and

4 cases 1. From the annular cavities 3 and 4, the liquid components are in opposite directions directed through radial diametrically arranged channels 8 and

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9 into the cylindrical cavities 7 of the mixing chamber. Compressed air is supplied to the cylindrical cavities 7 through the inlet 14, the annular cavity 5 and the tangential channels 10.

The counter flows of the liquid components break up against each other, mix up with each other by a swirling flow of compressed air and spray through nozzles 6 inclined to the axis of the housing 1. The bulk material is supplied from a feeder feeder (not shown) along the axial channel 2, divided into flows separator 11 and guided by its guide plates to exhaust nozzles 6. Spray mixtures of liquid Component materials coming out of the nozzles are mixed with bulk material and directed to the body axis, the image is also sprayed coatings based on multicomponent material.

The invention makes it possible to increase the uniformity of mixing of a multicomponent material and to improve the quality of the coatings obtained from it.

Claims (2)

Invention Formula I. A device for mixing and spraying multicomponent materials, comprising a cylindrical body with an axial flow channel for bulk material, a separator installed therein, a mixing chamber in the housing with radial diametrically arranged flow channels for supplying liquid components, tangential compressed air feed channels and uniformly distributed around the base circumference bodies with exhaust nozzles made with axes inclined to the axis of the body, characterized in that, in order to improve the quality Wani and raspsheni multicomponent materials, the mixing chamber is in the form of cylindrical cavities, uniformly distributed along the circumference coaxial with the housing, wherein the radial channels feed components and tangential supply of compressed air are connected to the channels of each cylindrical cavity, and the discharge nozzle installed at the axis of cylindrical cavities. 2. The device according to claim 1, wherein the separator is executed in the form of guides curved along a logarithmic spiral. plates, one ends of which are joined in the center of the axial channel, while others are brought out and directed to the outlet nozzles. 4 10 12 ten 74f (Ut / l.f. Aa FIG. 2