SU1377158A1 - Arrangement for separating loose materials - Google Patents

Abstract

The invention relates to the separation of bulk materials, mainly blends for the production of refractories, by size and m. used in ferrous and nonferrous metallurgy, in the construction industry. The purpose of the invention is to increase the separation efficiency by providing uniform blow-down of bulk materials at the gatherings from the vibrosurfaces (VP). On frame 1, through the levers 2 and dampers 3, the housing 4 of the separation chamber (K) with vibration exciter 5 is installed. Stepwise from the loading device 36 to the coarse fraction receiver, the KIT has inclined BIT 6 and 7 and a screening surface that is coupled with the lower VP 8. Between VP 6, 7 and 7, 8 gaps 9, 10 are formed. The latter are coupled with nozzles (P) for supplying air from the gas injection system to K. Removable cassettes 13 with replaceable ones are installed transversely throughout their length and height in gaps 9, 10 gas distribution grids .. Last in each Gap 9, 10 are combined into a package and installed with a consistent decrease in the size of the holes to the return end of VP 6 and 7. The space after the last sieve in each package from the end of the exit is individually communicated with the system B in l

Description

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my gas injection into K. Restrictive surfaces 20, 21, 22 of housing 4 are mated with P 23, 24 suction gas-dust flow from the space K above the descents from VP 6, 7. The source material in the free fall zone from BP 6 to VP 7 is processed by the stream compressed air uniformly flowing along the entire length of the gap 9 through the sieve holes. The dusty mixture is discharged through P 23. The material then goes to a similar treatment in the zone of descent from VP 7 to VP 8. 1 Cp. f-ly, 4 ill.

The invention relates to the separation of bulk materials, mainly blends for the production of refractories, by group and can be used in the ferrous and non-ferrous metals and construction industries.

The aim of the invention is to increase the separation efficiency due to the provision of uniform blowing of materials at the gatherings from the vibrosurfaces.

 Fig, 1 shows a device, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - the device, top view; in fig. 4 Irshcher performance replaceable cassettes.

I.

The device consists of a frame 1 on which through levers 2 and: shock absorbers 3 is installed a housing 4 of separation chamber with vibration exciter 5, housing 4 is equipped with inclined vibration surfaces 6, 7, and a screening surface 8 adjoining the lower vibration surface. Between the vibro-surfaces 6 and 7 and 7 and 8 are cut-outs, the rectangles 9 and 10 are connected to the pipes 11 and 12 to supply air from the gas injection system to the chamber of the housing 4. In the gaps 9 and 10, removable casks are installed. .with. with interchangeable gas distribution sieves 14, 1.5 and 16. In the latter, holes 17, 18 and 19 are formed, and the size of the holes 17 in the sieve 14 is larger than the size of the hole 18 in sieve 15, which is larger than the size of the holes t9 in the sieve 16, while oTBepcTitii in sieves: equal. The housing 4 is provided with restrictive surfaces 20, 21 and 22, which are connected to the sockets 23 and 24 for suction of the gas-dust flow from the spaces of the housing above the outlets from the vibration surfaces. Nozzles 23 and 24 are connected by means of elastic corrugated elements 25 to exhaust umbrellas 26 and 27, which are supplied with ribs 28 and connected to pipelines 29 and 30, in which the pressure below the atmospheric pressure is created. The nozzles 11 and 12 through elastic corrugated elements 31 are connected to devices 32 for controlling the supply of compressed gas, which are connected to a source of compressed air.

Exhaust umbrellas 26 and 27 are fastened to the metal structure with the rods 33. The drive of the vibration exciter 5 is carried out from the electric motor 34 via the elastic coupling 35.

In case 4, there is a loading device 36 and fraction receivers (not indicated). Vibration surfaces are installed in the housing 4 of the separation chamber with a gap of one under

different and stepwise from the boot device to the coarse fraction receiver (at the outlet of the screening surface 8). The sieves H-1b are installed crosswise in the gaps between the gathering end of each overlying and underlying vibration surfaces along the entire length and height of these gaps. The sieves in each gap are combined into packages and parallel to one another in a package.

The device works as follows.

The source material through the device 36 is applied to the vibro-surface 6 Hj moving along it, poured onto the vibro-surface 7. In the free-fall zone, the material layer is treated with a stream of compressed gas (air), which is fed through pipe 11 and interchangeable sieves 14, 15 and 16, The passage through the holes 17, 18 and 19, the air flow is distributed evenly along the entire length of the gap 9. The speed of the air in the separation zone is controlled by the device 32 and the interchangeable sieve 14, 15 and 16. The speed of the air is chosen equal to or Higher speed of particle vanishings of the removed class.

The dusty air mixture is withdrawn through the pipe 23, the elastic corrugated element 25 and the exhaust umbrella 27. The ribs divide the section of the exhaust umbrella at its base into equal parts, which contributes to the uniform distribution of the air flow over the cross section of the channel 23 and the exhaust umbrella 27.

The material processed in the first zone, where the smallest class of particles is removed, moves along the vibrating surface 7, from which it is poured onto the screening surface 8. In the descent zone, the layer of material is treated with a stream of compressed air similarly to the first zone. At the same time, the speed of air movement is chosen equal to the velocity of the particles moving away in this class zone. Similarly, the formation of the relay zones of air supply in the layer. Further separation of the material by size is carried out on the perforated surface 8.

Restrictive surfaces 20, 21 and 22 exclude air leaks from the surrounding space.

Claims (2)

1. Device for separating bulk materials, including a separation chamber with a loading device and receivers of fractions, inclined vibro-surfaces installed in the separation chamber with a gap one below the other and stepwise from the loading device to the receiver of large fractions, a screening surface adjacent to the lower vibro-surface, branch pipes , suction of the gas and dust flow from the spaces of the separation chamber above the vibrosurface surfaces, the gas injection system into the separation different camera By the fact that, in order to increase the separation efficiency due to the uniform blowing of bulk materials at the gatherings from the vibrosurfaces, the device is equipped with gas distribution sieves transversely installed in the gaps between the outlet end of each upstream and underlying vibrosurfaces along the entire length and height of these gaps In each gap, the gas distribution sieves are combined into a package and installed in a packet, with a successive decrease in sizes of holes to the return end. vibro-surfaces, and the space after the last gas distribution sieve from the end of the runoff in each package is individually communicated with the gas injection system in the separator ny camera. 2. A device according to claim 1, characterized in that the gas distribution sieves in each package are combined into a cassette, and each cassette and each gas distribution sieve in the cassette are installed with the possibility of removal. Yfig Z Fi.Z / 3 /; 7ftW flV 803dyu iHOsolwmQf a