SU1351700A1 - Pneumatic separating device for separating loose materials - Google Patents

Abstract

The invention relates to the technique of pneumatic separation and m. used in forestry and agriculture for cleaning and sorting seeds. The purpose of the invention is to increase the separation efficiency due to. improve the aerodynamic regime in the separation channel and simplify the mechanism of the cyclic position f / g. (L cond

Description

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rectangular plates (n). A feeder placed under the loading hopper, enclosed in a cylindrical case, is connected by a discharge window 3 for supplying the source material with a vertical separation channel (K) 4. In the lower part of K 4, parallel to the plane of about 3, there is a series of parallel P 8 connected kinematically to the mechanism 9 cycling their position with the drive. One of the P 8 faces the walls K 4, the other - inside. On the surface P 8, there are dispersed elements in the form of blades (L) 10 and 11, fixed in pairs on both planes P 8 perpendicular to them and inclined to them

The invention relates to the technique of pneumatic separation of bulk material and can be used in forestry and agriculture for cleaning and sorting seeds,

The purpose of the invention is to increase the separation efficiency by improving the aerodynamic regime in the separation channel and simplifying the cyclic change in the position of the pr. coal plates.

FIG. 1 shows the device, a general view:, FIG. 2 shows an assembly of plates with blades in a pneumatic separator channel, axonometrics in FIG. 3 is a view A of FIG. 2

The pneumatic separator includes a hopper 1, a feeder 2 enclosed in a cylindrical body connected by a feed supply window 3 with a vertical pneumatic separating channel 4. The upper part of the vertical pneumatic vaporizing channel 4 is connected to the sedimentary chamber 5 and the fan 6. Between the valve A torus 6 and a sediment chamber 5 accommodate a device 7 for controlling the speed of the air flow. In the lower part of the vertical pneumatic separation channel 4, a series of parallel rectangular plates 8 are installed, kinematically connected with mechanism 9 cyclic 700.

short sides. At the same time, L 10, located on the surface of 1 8 facing the Walls K 4, have the form of a quarter of a circle, and the paired ones L 11 - a rectangle. The material through the window 3 is dropped into K 4. By making oscillatory movements and turning around the axis P 8, it allows the air flow to produce a frontal impact on the material and destroy it, while L 10, 11 provide an effective air flow to the walls K 4 along the entire perimeter. Light impurities are carried away into the sedimentary chamber, the full-grain seeds overcome the resistance of the air medium and leave the bottom of K 4. 3 sludge.

change their position. The surfaces of the plates 8 are arranged with scattering elements in the form of blades 10 and 11, fixed in pairs on both planes of the rectangular plates 8. The blades 10 and 11 are installed perpendicular to the plane of the rectangular plates 8 and inclined to their short sides, with the blades 10 located on the surfaces of the rectangular plates 8 facing the walls of the pneumo-separating channel 4 have the form of a quarter circle and the paired plates 11 are rectangles, while the axes 12 of the rotation of the rectangular plates 8 are offset from their center and Wives parallel to the plane of the window 3 of the feeder of the pneumo-separating canal 4. It is also possible to mount the axes of rotation and along the center of the rectangular plates 8. The plates 8 are installed parallel to the plane of the window 3.

The device works as follows.

The material to be separated is poured into the hopper 1, from where a feeder 2 is thrown through the window 3 into the pneumatic separator channel 4, where a high degree of turbulence air flow is created by the fan 6. The plates 8 oscillate, turning about the axis 12, which is located in the upper edge 8 by means of the mechanism 9, by additionally carrying out inflows of air to the channel walls, which are located perpendicular to the supplied material. In turn, the blades 10 and 11 carry out an inflow of air to the walls of the channel located parallel to the feed material. Thus, the material is affected by a relatively uniform air flow under the action of which light impurities are carried away into the sediment chamber 5, and the full grain seeds overcome the resistance of the air medium and leave the bottom of the pneumo-steaming channel 4. The arrangement of the plates 8 and their longitudinal axes 12 are parallel the plane of the window 3 of the feeder allows the air flow to carry out a frontal impact on the feed material and to destroy it, which contributes to a more efficient flow of the pneumatic separation process. Installing the blades 10 and 11 perpendicular to the plane of the plates and obliquely to their short sides provides an effective air flow to the channel walls. The best results were obtained at the angle of inclination of the blades ot- 20-40-,

The blades 10 are made in the form of a quarter circle due to the provision of a constant gap between their edges and the wall, and the blades 11 in the form of rectangles are provided with the necessary area to effectively direct the flow to the channel walls.

The blades 10 and 11, as well as oscillatory movements of the plates 8 in the same plane, ensure the flow of air to the channel walls along the entire perimeter, increasing the flow velocity V of the channel walls and partially reducing

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its central part. In this way, the flow along the channel section is aligned.

The use of the proposed device allows to increase the separation effect by 7% when cleaning seeds of coniferous species and by 5% when cleaning seeds of sugar beet. In addition, in comparison with the prototype, the design of the plate drive is simplified.

Claims (1)

Invention Formula A pneumatic separator for separating bulk materials, including a vertical separation channel with a feed supply window and rectangular plates with planes installed inside the separation channel, one of which faces the walls of the vertical separation channel, and the other inside, the cyclic position changing mechanism rectangular plates with a drive and a hopper with a feeder, differing so that in order to increase the separation efficiency by improving the aerodynamic in the separating channel and simplifying the mechanism for cyclically changing the position of the rectangular plates, it is equipped with scattering elements in the form of blades mounted on 5 both planes of rectangular plates are perpendicular to these planes and obliquely to the short sides of the rectangular plates, the blades placed on the planes of the right angled plates facing the walls of the vertical separation channel are made in the form of a quarter of a circle, and the blades installed inside the separation channel, made in the form 5 rectangles, the rectangular plates being installed parallel to the plane of the feed window of the source material. five 0 fieL at 12 ten Editor A. Ogar fie.Z Compiled by Yu.Pravotorov Tehred L, Serdyukov Proofreader N. Korol . Order 5521/9 Circulation 539 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Subscription