SU31237A1 - Signaling device for loading and unloading bins - Google Patents

Description

When loading and unloading a skip working in a ventilation shaft, a short flow of air is possible, when the balker is little filled with coal or empty. To avoid this, the bunker is supplied with either any valves acting from the skip, motor, or using a coal plug, without completely emptying the bunker. The device proposed in accordance with the invention is intended to signal, in the above case, that the coal level has reached the limit, and that the unloading must stop.

In FIG. 1 and 2 schematically depict a device for mounting the device in a bunker; FIG. 3 and 4 - front and side view of the device; FIG. 5g is a side view of a modified device.

A pipe 1 is passed through the walls of the discharge hopper (Figs. 1 and 2) with two tees 2 and 3 in the middle, which are fenced off from each other by plugs 4. The outlets of the tee are lowered downwards and are set slightly above the lowest permissible angle level.

At the outer ends of the pipe is 7 ukr, rotary covers 5 are screwed (fig. 3 and 4),

supplied, each, with a lever 6 with a load of 7,

pull the covers off in a sloping 291

position (see the dotted line in Fig. 3). The contacts 8 to 9 of the signal chain are reinforced one on the lid, the other on the flange of the pipe 7. When the bunker is filled with coal, the air pressure in the pipe 7 is atmospheric, as a result of which the covers 5 are retracted to the inclined position under the action of loads; pins 8 and 9 are open .V

As soon as the coal level drops below the limit, the holes of the tees will be in a rarefied (due to exhaust ventilation in the bunker) space, the pressure in the pipe 7 will decrease and the caps will be pressed to the outer flanges of the pipe 7 under the action of atmospheric pressure. With this, the contacts (5 and closed optical signal circuit and a switch opening the electric motor circuit of the feeding device producing coal from the hopper.

When the bunker is subsequently filled, the lower ends of the tees are closed with coal, the pressure in the pipes is equal to atmospheric, the covers are deflected by the counterweight, the warning light is off, the feeder engine is turned off and coal unloading from the bunker can be restarted.

Two caps in the pipe, separated by a plug and acting independently of each other, are set up in case of any damage or repair of one of them, and in addition, for reliability of signaling. , ,

In the hopper (Fig. 5), the design of the device is somewhat different. FIG. Figure 5 shows the cover 5 in the closed position, when the pressure in the pipe (and therefore in the bunker) is greater than in the ventilation shaft and the workings adjacent to it. The latter will occur when the coal level in the bunker falls below a certain limit. When the bunker is filled and the holes of the tees are closed, the lid 5 will be retracted under the influence of the load and the contacts 8 It 9 will open.

Item of gain;

Signaling device for loading and unloading burkers in ventilation shafts with ski lifts, characterized by the use of a pipe passed through the bunker walls with two separated tees, the lower ends of which go down and are set slightly above the lowest and permissible level of coal in the bunker at the outer ends Which pipes are reinforced with load-loaded leaf covers, closed by iaTMdsphere pressure when leveling

the coal is below the limit and thus closing the contact, mounted on the flanges of the pipe and inserted into the optical signal circuit of the device opening the circuit of the electric motor of the feeding device producing the angle. from the bunker.