SU1397080A1 - Cyclone - Google Patents

Description

(21) 4007780 / 28-26

(22) 01/14/86

(46) 05.23.88. Bul H 19

(71) Siberian Branch of the All-Union Scientific Research Institute of the Dairy Industry

(72) V.A.Guse, F.F.Bukin and V.N.Kabantsev

(53) 621.928.37 (088.8)

(56) USSR Author's Certificate No. 231521, cl. B 04 C 5/22, 1967.

(54) CYCLONE

(57) The invention relates to a device for cleaning exhaust air from milk powder in spray dryers and reduces the build-up of the discharged product, eliminating the blockage of the lower part of the body and the discharge opening. The cyclone includes an inlet 1, a cylindrical 2 and a conical 3 parts,. pipe 4 for removal of purified air, half-ring scrapers 5, 6, bearing supports 7, drive daughters 8 with shafts and discharge port. 1 il.

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The invention relates to devices for purifying exhaust air from powdered materials and may find application in the dairy, food, chemical industry.

The purpose of the invention is to reduce sticking of the discharged product, elimination of blockage of the lower part of the body and the discharge opening.

The drawing shows a schematic diagram of a cyclone,

The cyclone contains a cylindrical housing 1 with an inlet pipe 2 and a discharge opening 3 in its lower part, a pipe 4 for discharging purified air and a wall cleaning device consisting of two semi-circular scrapers 5 and 6 installed one above the other with the possibility of rotation around horizontal axes and with the same gap to the wall of the casing, and the scraper axes are parallel to the distance of no more than two radii of the lower scraper 6. The radius of the lower scraper 6 is equal to the radius of the discharge hole 3, and its axis is standing from the unloading opening 3, this smaller radius scraper. The scrapers 5 and 6 are connected on the one hand with the bearing supports 7, and on the other - drive sprockets 8 connected to the shafts.

The scrapers 5 and 6 are driven into rotational motion through drive sprockets with shafts. By rotating, the scrapers continuously remove the adhered product in small portions, preventing the layer from growing in the lower part of the cyclone and the formation of a plug.

The strongest sticking and blocking of a cyclone with a dry product, for example, dry milk, occurs in the lower part of it, at the edges of the discharge opening, and favorable conditions for the formation of arches are created here. When the scrapers are placed one above the other, with the possibility of rotation of the zone of action, the formation of a dome in this plane is intersected and eliminated.

The rotational speed of the scrapers is adjusted so that the dusting of the product. The shape of the scrapers in the form of a half-ring is more convenient when cleaning the round discharge opening of the cycling VNILPI Order 2546/6

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It provides the necessary rigidity, resistance to deformations and crushing of the packed product in different planes.

The distance between the scraper axes of no more than two radii of the lower scraper is necessary to ensure maximum removal of adhered product from the cyclone walls between the axes, as well as to break the blockage and eliminate the formation of arch between the axes with occasional increases in product entry into the cyclone.

Semi-ring scrapers are located in the zone of intensive sticking of the product so that the arc of the lower semi-ring scraper extends beyond the edges of the discharge opening, and during rotation ensures maximum continuous cleaning of the surface of the cyclone and the edges of the discharge opening and continuous discharge of the product.

The proposed cyclone allows to reduce sticking of the discharged product, eliminate blockages and tapping, reduce product losses with exhaust air, and increase the service life of cyclones.

Claims (1)

Invention Formula A cyclone with a cylindrical housing with an inlet nozzle, a discharge opening in the lower part, a pipe for discharging purified air and a wall cleaning device, characterized in that, in order to reduce sticking of the discharged product, to avoid blocking of the lower part of the housing and the discharge opening, the cleaning device made in the form of two half-ring scrapers located in the lower part of the body, mounted one on another with the possibility of rotation around horizontal axes and with the same gap to the st The bottom of the body, the radius of the bottom scraper is equal to the radius of the discharge hole, the axes of the scraper are parallel to the distance of no more than two radii of the bottom scraper, and the axis of the bottom scraper is located at a distance from the discharge hole less than the radius of this scraper. Circulation 523 Subscription