RU1791296C - Installation for pneumatic transportation on loose materials - Google Patents

Abstract

And use: pneumatic supply of bulk materials. SUMMARY OF THE INVENTION: With a screw feeder, the material is fed into a cylindrical mixing chamber, where it is aerated by rotating disks and compressed gas supplied between the disks and through the inclined chamber aerial bottom. From the mixing chamber, the material in a mixture with gas enters the impeller, which throws it into the transport pipeline. The presence of rotating disks of various diameters with gas supply channels located between them makes it possible to aerate and transport material with various physical and mechanical properties. 1 s.p. f-ly, 2 ill. Yo

Description

The invention relates to pneumatic transport and can be used for 1 supply of bulk materials, such as cement, sand of various fractions, etc., to a building under construction. However, it may find application in various fields of transportation of materials, for example granulated sugar, sawdust, and the like.

H: i of known installations for transporting, bulk solids, are located 1 unit containing a hopper, a pneumatic pipe in which slotted gratings for aeration of the material are formed, a piping system for removing suspended particles of bulk material 1.

The disadvantage of these installations is the inability to use them on materials of various sizes or masses. .

And the closest known one is a pneumatic conveying apparatus for bulk material, comprising a screw feeder, a cylindrical mixing chamber with an airliner, and a paddle blower 2.

The disadvantage of this installation is the inability to transport materials with various physical and mechanical properties.

The purpose of the invention is the expansion of technological capabilities by providing transportation of materials with various physical and mechanical properties.

This is achieved by the fact that the installation for pneumatic transportation of bulk material containing a screw feeder, a cylindrical mixing chamber in communication with its inlet with the discharge end of the screw feeder and made with a gas supply channel in its lower part, installed

3

yu che oh

about the mixing chamber in the area of its outlet above the aforementioned gas supply channel of the aerodrome, and a paddle blower, communicated with its inlet, coaxial to its lobed wheel, the opening with the outlet of the mixing chamber, and the outlet with a transport pipe, equipped with placed in the mixing chamber mounted vertically with the location of its inlet in the upper and the outlet in the lower parts of its side surface, coaxial to it under said inlet with the possibility of rotation around of the axis from the drive with an aerator, made in the form of a cup facing upside down with ripping disks mounted coaxially to it and with a gap relative to each other, located with increasing diameter from the bottom of the cup, while the cup cavity is in communication with the source of compressed gas by - along the axis of the mixing chamber of the gas pipeline, the side wall of the cup in the zones between the ripping discs is perforated, and the aero plate is installed with an inclination to the outlet of the mixing chamber. In addition, the aero plate is installed with an inclination to the outlet of the mixing chamber.

The significance of the differences is proved by the fact that in the search process no individual sets of features were found that characterize this technical solution with the development of the required properties,

The invention is illustrated in the drawings. In FIG. 1 shows a general view of the installation; in FIG. 2 - node A in FIG. 1.

The installation comprises a screw feeder 1, at the outlet of the body of which a valve device 2 is mounted in the form of a preloaded spring 3 of a rotary damper connecting the feeder 1 to the mixing chamber 4, which, in turn, is connected via a confuser pipe 5 to a blade pneumatic blower b in the form of a drive impeller. A gas duct 7 is introduced from below into the cavity of the mixing chamber 4 with an adjustment valve 8 and a shutter 9 located at the bottom hole of the mixing chamber 4. The aerial plate 10 is pivotally mounted on the cavity of the mixing chamber 4 from the side of the nozzle 5 and under it has a mechanism 11 for tilting it to the nozzle 5 A grid 12 is placed under the aerodynamic plate 10, formed by a manifold of pipes with nozzles connected to a gas supply 7, the end of which is brought out under a glass 13 with fixed

to it stepwise driven ripping disks 14. In the glass between the planes of disks 14 there are openings for air supply. The side wall of the mixing chamber 4 is made with a compensation insert 15 of elastic material to maintain tightness. The camera 4 has an input 16 and output 17 holes. In the lower part of the mixing chamber 4, a gas supply channel 18 is formed in which the shutter 9 is located.

Installation works as follows,

By the feeder 1, the bulk material is continuously fed through the valve device 2 into the mixing chamber 4, where it falls under the influence of stepwise arranged loosening disks 14 mounted on a rotary cup

13, facing the bottom up. In the cavity between the ripping discs 14, air saturating the bulk material is supplied through the openings of the cup in its wall. In this state, the bulk material enters the space above the aerofoil 10, which is located using the mechanism 11 at the required angle to the axis of the confuser pipe 5. By selecting the air supply through the valve 8, the shutter 9 and the glass 13

a wide range of regulation of the effective transportation of bulk materials is provided, which in suspension are fed through the pipe 5 to the paddle pneumatic blower 6, which increases the range and efficiency of material transportation.

According to preliminary calculations, the installation will provide an increase in productivity by 10-15% compared with

installations of a similar type and will provide the possibility of a wide variation of transported bulk materials, depending on their physical and mechanical properties.

.

Claims (2)

1. Installation for pneumatic transportation of bulk material, 0 containing a screw feeder, a cylindrical mixing chamber communicated by its inlet with the discharge end of the screw feeder and made with a gas supply channel in its lower part, installed in the mixing chamber in the area of its outlet above the aforementioned gas supply channel, and a blade pneumatic blower, communicated by its outlet opening coaxial with its impeller the opening of the mixing chamber, and the outlet with a transport pipeline, characterized in that, in order to expand technological capabilities by providing transportation of materials with different physical and mechanical properties, it is equipped with a vertically arranged in the mixing chamber with its inlet in the upper and the outlet - in the lower parts of its lateral surface, coaxial with it under the said inlet with the possibility of rotation around its axis from the drive by an aerator, made m as an upwardly facing cup bottom with attached 0 5 it is coaxial with it and with a gap relative to each other by ripping discs located with increasing diameter from the bottom of the cup, the cavity of the cup communicating with a source of compressed gas by means of a gas pipe placed along the axis of the mixing chamber, the side wall of the cup in the zones between the ripping discs is perforated, and the aero plate is installed with an inclination to the outlet of the mixing chamber. 2. Installation according to claim 1. characterized in that the air bed is mounted 4 with the possibility of changing the angle of inclination thereof to the outlet of the mixing chamber.