SU1258917A2 - Apparatus for breaking fibrous material - Google Patents

Description

The invention relates to equipment for the dissolution of fibrous material in air, can be used in the pulp and paper, textile and other industries, and is an improvement of the device according to the author. St. N 1087590.

The purpose of the invention is to increase the dispersion efficiency.

FIG. 1 shows a device for the dissolution of the fibrous material in FIG. 2; a section A-A in FIG. one.

The device for dissolving the fibrous material comprises a housing 1, a rotor 2 and a stator 3 forming the dispersion zone 4, a pipe 5 for supplying a suspension of fibers to the dispersion zone, a sieve 6 made in the form of a half-cylinder, a pipe 7 for removing the treated fibers of a fiber, a blade 8 with brushes mounted on the rotor and the bunker 9.

The device is provided with a chamber 10 for pre-dissolving a fibrous, material of rectangular cross section, one of the ends of which is made with a baffle wall 11 inclined with respect to two opposite side walls of the chamber.

On the side wall 12, which forms an obtuse angle with the baffle wall, there is a nozzle for supplying the fibrous material and a nozzle 13 for supplying compressed air. On the opposite side wall 14 and the baffle wall 11 are mounted dispersing protrusions 15. The other end of the camera. Pre-dissolution is attached to the nozzle 16 for feeding the fibrous material.

The device works as follows.

The gas medium, precompressed in compressor4, enters the nozzle 13, after which it acquires a high velocity. The original fibrous mass ejection through the pipe 16, in which the original fibrous material serves one of the known methods.

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The high velocity gradients arising from the meeting of high-speed gas jets and floccules of the fibrous material contribute to the development of significant tangential stresses on the surface of the floccules that destroy them. In this case, the main part of the fibrous material is dispersed. The energy going to disperse,

0 is about 18% of the kinetic energy of the jet. Formed with a partially dispersed aerosol suspension of fibers strikes at an angle of 25 against the baffle wall P. Arising at

15 this high-amplitude pressure pulsations acting with a high frequency destroy floccules on the fibers. j An air suspension with significant speed moves along the baffle wall 11 and the wall 14 with dispersing protrusions 15 fixed on them. Moreover, undispersed floccules and material beams that have a greater surface mass than individual fibers experience a significant destructive effect upon impact on the protrusions which contributes to further dispersion.

30 Then, the almost completely dispersed aerosol suspension of the fibers enters the port for supplying the aerospace suspension of fibers 5 of a known device, where it is finally dispersed.

Such a design allows improving the quality of the molded web and increasing the productivity of the device. This will allow increasing the capacity of the unit for dry forming the web on which the device will be installed.

The test results are presented in the table.

From the table it can be seen that the greatest amount of material being dispersed is obtained at an angle of 130 ° between the fender and side walls and when the nozzle is installed at an angle of 25 to the fender wall.

Editor A. Kozoriz

Compiled by J.C.

Tehred And Popovich Proofreader S.Shekmar

Order 5093/29 Circulation 355Under

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

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

FIG. g

Claims (2)

1. DEVICE FOR DRAWING A FIBER MATERIAL on auth. No. 1087590, characterized in that, in order to increase the dispersion efficiency, it has a chamber of rectangular cross-section for preliminary dissolution of the fibrous material, provided with a nozzle for supplying compressed air and a nozzle for feeding fibrous material, with one end to the nozzle for supplying the aerospace of the fibers to the dispersion zone, the other end of which is made with a baffle wall inclined with respect to both side walls, with the side walls and forming an obtuse angle with the baffle wall has a pipe for supplying the fiber material and a nozzle for supplying compressed air, directed towards the baffle wall and the opposite side wall and the baffle wall are dispersing protrusions. 2. Device by π. 1, b.ch that the angle between the baffle wall and the side wall is 130, and the nozzle for supplying compressed air is set at an angle of 25 to the baffle wall. (Λ with Yu sd 00 with m > m 1258917 2