SU1207526A1 - Pneumatic separating device - Google Patents

Description

2, The device according to claim 1, of which is based on the fact that in the upper part of the main pneumo-separating

The invention relates to a technique for separating wet mixes and can be used in grain cleaning machines for the initial processing of a pile of seeds of breeding batches.

The purpose of the invention is to increase the efficiency of the separation process, reduce injury to seeds and increase productivity by pre-separating the starting material.

Fig, 1 schematically shows the device along the axis, section; FIG. 2 is a section A-A in FIG. one; in fig. 3 - blade axonometric element.

A pneumatic separator device contains a hopper 1, an additional pneumatic separator channel 2 with an additional fan 3 and outlets for fraction A, 5.6 with regulating valves 7. The main pneumo separating channel is made in the form of an inclined mounted rotating cylinder 8 with blades 9, forming blades elements 10, limited to the inner surface of the cylinder 8, the surface of a truncated cone 11 and a retaining ring 12 installed on the loading side of the source material. The blade elements are separate sections 13. Each section has aprons 14 on the side of the fan in the upper part of the main pneumatic separating channel. The main channel 8 is connected to the fan 15 by means of a settling chamber 16. The device also contains a sieve 17 and a receiver of finished products 18 and 19.

The device works as follows.

The heap enters from the hopper 1 into the loading horizontal pneumatic separating channel 2 and the air flow created by the fans 3 is transported inside the main pneumatic separator channel 8 through

The channel has an apron on each side of the fan section.

openings 4, 3, 6 with adjusting slides 7. At the same time, a pile of aerodynamic properties is divided into fractions A, B, C. Sama 5 light fraction A through opening 4 enters the main pneumo-separating channel 8, flows down its inner surface, due to tilting channel 8 to section 13, and fills them 10 in the process of rotating the cylinder through the receiving openings. A retaining ring 12 serves to hold the pile in. When the pile is lifted, it gradually crosses from the cylindrical surface of the blade element 10 onto its inclined surface and, rolling down it, enters the air flow created by the fan 15. At this moment 20 versts of section 13 are covered by an apron 14 located in the upper half of the cylindrical channel 9. Light particles of the heap are carried away by the air flow created by 5 I5 fans and are deposited in the sedimentary chamber 11, and the seeds and large impurities are distributed in the lower part of the channel 8, between the sections 13 and the stack along the nak-0 tube of the pneumo-separating channel 8, fall into the receiving openings of the next section 13. This is also received through the opening 5 of the loading pneumo-separating channel 2 fraction Ji B. Before the heaviest fraction of seeds and impurities comes out from channel 8 to sieve 17, where it is further separated into seeds 0 and large impurities, which fall respectively into receiving bunkers 18 and 19,

Due to the fact that the device is equipped with an additional pneumo-5 parrying channel with openings for the exit of fractions, the heap enters the main pneumo-separating channel, already previously divided into

fractions, and, the lighter the fraction, the closer it goes to the beginning of the main pneumo-separating channel, it takes more lifting cycles with paddle elements and subsequent treatment with air flow, which, in turn, leads to a more complete release of impurities in the pile, which differs from the main seeds culture by aerodynamic properties.

The presence of gates allows one to regulate the separation of the pile into fractions even in the loading pneumochannel, which increases the separation efficiency in the main pneumo-separating channel.

The most valuable fractions of seeds of the main culture fall from the loading pneumo-separating channel into the main one closer to its output and therefore fewer separation cycles take place, which significantly reduces their injury.

The proposed design of the vane elements ensures that the device performance is higher, since the pile, lifting up, is poured from the cylindrical surface onto the inclined one with a low coefficient of friction. At the same time, the receiving openings of the blade elements are covered by aprons, as a result of which the influence of the air flow created by the fan and directed in the opposite direction of the heap of the seed to the side does not affect the part of it that flows at this moment along the inclined plane of the blade 10

2075264

elements, therefore, it receives a higher speed, directed along the channel axis, at the moment of entering the air flow. This increases the throughput of the device and, consequently, the performance. The number of pneumatic separation cycles is regulated by the number of sections. The separation efficiency increases as well due to the use of material for the fabrication of the conical surface of the blade with a low coefficient of friction of the seed heap on it. At the same time, the angle c (.) Decreases and, with the same diameters of the truncated cone of the blade elements, the length of its generators increases, which reduces the possibility of attributing the light fraction of seeds to repeated processing on this section of the blade-buckets. At the same time, this allows between the sections, lengthen the channel 8 itself by increasing the width of the sections, thereby obtaining a more stable air flow and, by increasing the distance between the outlet openings for fractions 4, 5, 6, achieve a clearer separation of the pile in boot caiale 2 into fractions A, B, C.

15

20

25

thirty

It should be noted that the angle is oC. made larger than the double friction angle of the seed pile on the material of the cone of the pile at the entrance to the air

flow.

(Pl / s.2

8 WB 11

12

FIG. 3

Claims (2)

(57) 1. PNEUMATIC EQUIPMENT DEVICE, including the main pneumatic separating channel in the form of a cylinder inclined rotatably, with a blade element, a feed hopper, a loading device, finished product collectors, a fan, characterized in that, in order to increase the efficiency of the separation process, reduce trauma to seeds and increase productivity due to the preliminary separation of the material, an additional air separation channel is installed inside the main a pneumatic separating channel with outlet openings with gates and an additional fan, and the blade element is made of sections installed with a gap, the blades of which are limited by the inner surface of the main pneumatic separating channel, the surface of the truncated cone and the ring installed on the loading side of the source material. SU, 1207526 2. The device according to claim 1, about l and the channel of each section with the fact that in the upper ron of the fan there are installed farms of the main air-separating fat.