SU541746A1 - Method of transporting portions of granular and powdered material - Google Patents

Description

material steps in the receiving capacitance, since the pressure in the working capacity rises gradually to a predetermined capacity, and the capacity of the device depends on the pressure in the working capacity.

The purpose of the invention is to maintain the mass constant of the transported portions of the material during all the transportation cycles.

This is achieved by the fact that: at the beginning of each transportation cycle, the gas is fed simultaneously to the feeder and to the receiving tank, after which it is discharged from the receiving tank to the atmosphere, and at the end of each transportation cycle, the gas is fed simultaneously to the material layer, in the receiving tank, while the gas above the layer of material in the feeder, is discharged into the atmosphere.

The drawing schematically shows a device explaining the proposed method

The feeder 1 is connected by a transport pipeline 2 to a receiving tank 3 having a discharge device 4. The receiving tank 3 is equipped with a filtering device 5 and a gas discharge valve 6 to the atmosphere. The feeder 1 is equipped with a filtering device 7, an electrical contact pressure gauge 8, a valve 9 for venting gas to the atmosphere, a charging port.

10 and material level indicators 11, 12. Pressure controllers 13, 14 are used to set the value of the specified pressure in the feeder 1 and in the receiving tank 3. Valves 15-17 serve to supply gas to the feeder 1 and to the receiving tank 3.

The method is carried out as follows.

The material is fed into the feeder 1 through the loading nozzle 10 and upon reaching the level of the material of the level indicator

11 feeding is stopped, and the loading nozzle 10 is closed. After that, the valves 16, 17 are opened and the gas is simultaneously supplied to the feeder 1 and to the receiving tank 3, and the gas to the receiving tank 3 is supplied with the same or slightly higher pressure than to the feeder 1. In that period of time, until the pressure

in the feeder 1, it rises to the desired value, the gas pressure in the pipeline 2 is equal to or greater than the pressure in the feeder 1, and the material does not flow into the pipeline 2. By

when the pressure gauge 8 is set in the feeder 1, the pressure gauge 8 gives a signal to close the valve 17 and open the valve 6. The gas from the receiving tank 3 is discharged through filtering device B into the atmosphere, a pressure differential is created between the feeder 1 and the receiving tank 3, and transportation cycle.

On the other hand, at the same time, the electric contact pressure gauge 8 gives a signal for switching on the time relay (not shown in the drawing),

1-shch a certain period of time, B for which should be the transportation of a portion of the material. After this time has elapsed, the relay gives a command to close the valves 6.16

and opening valves 9,15,17. The gas enters the receiving container 3, and the pressure created there blocks the outlet of the pipeline 2. The transportation of the material ends. Under the action of the gas entering the layer of material in the feeder 1, the latter fluidizes, which allows the gas to be supplied to the receiving tank 3 to release the pipeline from the material remaining there. The gas from the feeder 1 by opening the relief valve 9: through the filter 7 and the atmosphere,. After a certain period of time sufficient for the complete pipeline H 2 and pipe 2, the relay gives a command to

closing valves 9, 15,17. The loading device 4 is opened, and a portion of the material is poured into the chemical apparatus. The transport cycle is completed, the system is restored to its original state.

Claims (2)

1. Smoldyrev A.E., Hydro and pneumatic transport, Moscow, Metallurgists, 1975, p. 27O. 2. The author's certificate number 286583, 65 Q 53/04, 1924. five: 3 15