SU994277A1 - Apparatus for mixing components of polymeric material - Google Patents

Description

The invention relates to devices for mixing liquid components in the preparation of at least two-component polyurethanes and can be used in chemical engineering and other industries.

A device is known for. mixing, polystyrene containing a chamber with a drive mixer and with input fittings for components located in the chamber wall [1].

Closest to the invention is a device for mixing the components of a polymeric material, comprising a vertical cylindrical body with inlet and outlet openings, a drive mixer with mixing elements in the form of alternating tiers of different-sized and tilted blades [2] .

The disadvantages of these devices include insufficient efficiency · mixing of the components and the homogeneity of the mixture due to the straightness of the device.

The aim of the invention is to increase the efficiency of mixing components. . ’G This goal is being achieved. the fact that in the device for mixing the components of the polymer material containing a vertical cylindrical body with inlet and outlet openings, θ a drive mixer with mixing elements in the form of alternating tiers of different sizes and inclined in opposite directions from the horizontal plane of the hazards, θ located in the cavity of the housing along its axis, the inlets for each component are made in the lower part of the device’s casing and are connected to the con, centrically to each other, annular cat-O on llamas connected by radial channels with the cavity of the body, and the radial channels for supplying each component are placed in alternating order. ·

-5 in FIG. 1 schematically shows a device, a vertical axial section; in FIG. 2 is a horizontal section through the lower part of the housing AA in FIG. 1; _ in FIG. 3 - horizontal

Yu section of the middle part of the housing BB; on.Fig. 1; in FIG. 4 - view of the working body from the side of the end of the short rod; in FIG. 5 is a view of the working body from the side of the end of a long rod.

The component mixing device comprises a housing 1, in the lower detachable part 2 of which component inlets 3 and 4 are made, connected to the respective annular channels 5 and 6 arranged concentrically to each other and connected by the corresponding radial channels 7 and 8 to the housing cavity. The radial channels are arranged in alternating order, i.e. each channel 7 is located between two channels 8 and vice versa.

In the cavity of the housing 1 is located the working body 9 with blades made in the form of short 10 and 11 long rods. A group of short rods 10 forms one, and a group of long rods 11 forms another tier, which alternate with each other.

Working organ 9 is equipped with reflectors 12 and'13. The reflector 12 protects the stuffing box 14 from the mechanical effect of the mixture, eliminates the occurrence of stagnant zones in the outlet part of the housing cavity, where the outlet hole 15 is located in its wall, and the reflector 13 serves to eliminate the stagnant zones in the lower (receiving) part of the housing cavity.

The device operates as follows.

The polymer components come under pressure from the metering pumps, due to which they are forced to push through the inlet holes 3 and 4, ring concentric channels 5, b and radial channels 7 and 8 into the body cavity.

The working body 9 along with the reflectors 12 and 13 is given a clockwise rotation. When the mass of the tier reaches the long rods 11, which forms a negative angle of attack with the horizontal plane! ot, it is prompted to move down, i.e. in the direction opposite to the direction of supply of the mixture, while the tiers of short rods 10, forming a positive angle of attack d _{ with a horizontal plane ₎ , cause the mass to move up, i.e. in the direction coinciding with the direction of supply of the mixture. Thus, not only the mutual penetration of component flows occurs, but also creates a vortex motion of these flows due to the forces acting on the mixture during rotation of the working body 9, and due to centrifugal forces. This contributes to active mixing and obtaining a homogeneous mixture. After filling the cavity of the housing. A homogeneous mass exits through the outlet 15 and is sent as directed.

The invention can significantly increase the efficiency of mixing the components and improve the homogeneity of the resulting mixture.

Claims (2)

; on .fig. 1 in FIG. 4 - view of the working body from the side of the short rod; in fig. 5 is a view of the working member from the end face of a long rod. The device for displacing the components includes a housing 1, in the lower detachable part 2 of which inlets 3 and 4 are made for the components connected to corresponding annular channels 5 and b, connected associated radial channels 7 and 8 with a housing cavity. The radial channels are arranged in alternating order, i.e. each channel 7 is located between two channels mi 8 and vice versa. In the cavity of the housing 1 there is a working body 9 with blades made in the form of short 10 and long 11 rods. The group of short rods 10 forms one, and the group of long rods 11 forms another Rus, which alternate with each other. Work.organ 9 is equipped with reflectors 12 and 133. The reflector 12 protects the packing device 14 from the mechanical effect of the mixture, eliminates the occurrence of stagnant zones in the outlet part of the housing cavity, where there is an outlet 15 in its wall, and the reflector 13 serves to eliminate the dead zones in the lower (receiving) part of the housing cavity works as follows. Polymer components are supplied under pressure from metering pumps, due to which they are forced to push them through inlets 3 and 4, circular concentric channels 5, b and radial channels 7 and 8 into the body cavity. Working body 9, along with deflectors 12 and 13, is given a clockwise rotation. When the mixed mass reaches the long rods 11, which form a negative angle of attack ot with the horizontal plane, it induces a downward movement, i.e. in the direction opposite to the feed direction of the mixture, while the Rus of the short rods 10, forming a positive angle of attack ot with the horizontal plane, cause the mass to move upwards, i.e. in the direction coinciding with the direction of flow of the mixture. Thus, not only does the mutual penetration of the flows of kootonents occur, but also a vortex motion of these flows is created due to the forces acting on the mixture during the rotation of the working body 9, and due to centrifugal forces. This contributes to active mixing and obtaining a homogeneous mixture. After filling the housing cavity, the homogenous mass exits through the outlet 15 and is directed as intended. The invention makes it possible to significantly increase the mixing efficiency of the components and to improve the homogeneity of the resulting mixture. The invention of the Device for mixing the components of a polymeric material, contains a vertical cylindrical body with inlets and outlets, placed in the cavity of the housing on its axis drive agitator with mixing elements in the form of alternating Rus of different size and inclined in opposite directions from the horizontal plane of the blades, which that, in order to increase the mixing efficiency of the components, the inlets for each component are made in the lower part, the housing is stable va disposed and connected to a wall of the housing concentrically rugu each rotating arm 4 channels coupled by radial .kanalami with a cavity housing, said radial ducts l supplying each component are arranged in an alternating order. Sources of information taken into account in the examination 1. USSR author's certificate number 362695, cl. On 29 D 27/00, 1970, 2. USSR author's certificate number 740515, cl. In 29. D 27/00. 3950 prototype). lg 0t / f.f FIG L // 0ygJ