SU994380A2 - Apparatus for conveying loose materials - Google Patents

Description

This invention relates to a pneumatic port and can be used in cement, metallurgical and other industrial fields. According to the main author. St. No. 852738, a device for transporting bulk materials is known, comprising a container for a material with a vertical discharge pipe, located under the container and a mixing chamber with an aerofoil attached to said pipe, an air duct and a material pipeline, the inlet end of which is located in the mixing chamber parallel to the discharge pipe; equipped with several vertical partitions installed in the mixing chamber one after the other in the gap between the discharge pipe and the inlet to ntsom conveyor line and having a height less than the height of the mixing chamber, wherein one of the adjacent baffles attached to the bottom of the chamber and the other - to krsh1ke 1. The disadvantage of such a device is the impossibility of its use in systems where a continuous and uniform supply of powder materials is required. The purpose of the invention is to improve the transportation conditions. This is achieved by the fact that the device containing the above mentioned set of essential features is equipped with a membrane regulator with a rod on which a gate is mounted, located in the mixing chamber parallel to the last partition during material movement, with the possibility of adjusting the size of the material through-hole torus communicated with the duct. The drawing shows a general view of a device for transporting bulk materials. The device includes a capacity of 1 for the material, vertical discharge

pipe with a rotary gate 2, a check valve 3, a mixing chamber 4 with an aerodistrike 5, a water-bearing chamber b, a partition 7, a membrane regulator 8 with a rod 9 on which 5 the gate 10 is mounted, located in the chamber 4, parallel to the latter along the material movement the partition L1 is equipped with an airflow regulator for adjusting the size of the material throughput, material tO LoproBod 12, nozzle 13 and duct 14. At the same time, the supramembrane cavity of the regulator 8 communicates with duct 14 through the nozzle 15.

Transport device 15

loose continents works as follows.

The powdery bulk material from the tank 1 under the action of its own weight, the open gate of the discharge pipe 2 and the valve 3, goes into the mine; chamber 4. Under the action of air entering through the aero table 5 of chamber 6, the material is aerated and comes to a fluidized state, i.e. it becomes 25 fluid.

When fluidity is acquired, the material flows, as in communicating vessels, from the first section of the mixing chamber to the second, and from there to the third section, etc. (the number of sections depends on the required hydrostatic pressure required to create an overpressure in the mixing chamber) by the pressure of the material coming from the tank 1 and then to the last section of the mixing chamber 4, the material passage opening between the last partition 11 and the gate 10 .

Once in the last section of the chamber 4, the material enters the pipeline 12, where it is fed to the consumer under the pressure of the air jet leaving the nozzle 13.

Constant amount of material

entering the last section of the mixing chamber 4, is automatically provided by changing the magnitude of the material orifice

between the partition 11 and the gate 1O of the regulator 8, due to which a constant pressure is maintained in the last section of the mixing chamber 4 (a predetermined pressure P or a differential pressure D P.

Compressed air pressure p2 over the membrane is constant. The pressure in the last section of the mixing chamber P; (it depends on the amount of material entering the material line 12. as the amount of material supplied to the material line 12 increases, its resistance increases and the pressure in the last section of the mixing chamber P increases. As a result, the pressure drop D, the membrane sags upward, dragging the gate 1O and the overhanging part of the material passage through the hole, thereby reducing the amount of incoming material to the last section of chamber 4. Thus dderzhivaets posto5Shny material flow and constant pressure drop R L. The predetermined differential pressure is set by a spring regulator 8.

Claims (1)

1. USSR author's certificate No. 852738, cl. 65 Q 53/18, 1979 (prototype).