SU459395A1 - Continuous chamber air pump - Google Patents

Description

bays 12 alternately with sluice chambers 1. Another spool 13 serves to relieve excess pressure from sluice chambers 1 into the atmosphere after they are unloaded. Compressed air is taken from pipeline 10 through line 14 via distribution spool 15 to operate a control system that includes gate closing control lines 16, gate 3 opening control lines 17 and No. 13 spool switching control lines 18 13. The valve 19 serving as a shut-off valve mounted on the rod 20 of the pneumatic cylinder with an emphasis 21. The rod cavities of the pneumatic cylinders 8 are divided by a partition 22 into two parts — the middle and lower cavities of the pneumatic cylinder connected to the lines 16 and 18.

The continuous chamber pump operates in the following manner.

The lock chambers 1 are alternately loaded with material from the bunker 9 and discharged through pipelines 6 through check valves 7 into the mixing chamber 4, from where the transport pipe 5 continuously transports the material to the place of consumption.

The spool 15 distributes alternately into the control circuit of one of the sluice chambers 1 compressed air supplied through pipeline 10 from line 14. Compressed control air enters through trunk 16 into the middle cavity of cylinders 8, the piston rod lifts the loading gate 3 and during its operation by the stop 21 at the end, it picks up the plate 19, connecting the middle and lower cavities behind the plate by the shut-off valve 19 in the cavity of the pneumatic cylinder 8, and also activating the line 18. Compressed air is fed through the line 18 to the spools 11 and 13. The spool 11 serves to supply pressed air into one of the airlock chambers 1 through pipeline 12 through the aero-route, e 2. Spool

13 connects to the atmosphere one of the sluice chambers 1 during the period of its loading with material and serves to relieve the overpressure before opening the shutter 3 and release the air displaced by the material during the filling of the chamber 1. In the loading mode of the chamber 1, the shutter 3 is forcibly opened by the pneumatic cylinder 8, the upper cavity of which is supplied via line 17 is compressed air.

Opening the shutter 3 after relieving the overpressure from the chamber 1 is provided either by the ratio of the areas of the piston and the shutter 3, or by introducing a throttling device into the main line 17.

EXAMPLE OF INVENTION

A continuous chamber pneumatic pump containing slug chambers with charging gates controlled by pneumatic cylinders, a mixing chamber with a transport piping connected to discharge chambers discharging piping ending with check valves, a control and air distribution system having a distribution valve that supplies compressed air to the pneumatic cylinders of the charging unit. sluice chambers, as well as the spools of compressed air supply to sluice chambers and pressure relief in them, I distinguish In order to simplify the control system and the air distribution and increase the reliability of the pump, the rod cavity of each pneumatic cylinder of the loading gate is divided into two parts interconnected by a shut-off valve controlled by the rod of the pneumatic cylinder, and a part of this cavity of the pneumatic cylinder is located behind the check valve It is connected to the control cavities of the compressed air supply spools in the sluice chambers and pressure relief in them.