feeder

Abstract

The invention relates to the field of electromechanics, in particular to a feeding machine. The feeding machine comprises a feeding pipe, a variable pitch conveying helix is arranged inside the feeding pipe, and the screw pitch of the variable pitch conveying helix gradually decreases from the A end to the B end of the variable pitch conveying helix. A feed port is formed in one end of the pipe wall of the feeding pipe, and the feed port is placed above the A end of the variable pitch conveying helix. The other end of the feeding pipe is provided with a plug-in type Venturi tube, and the Venturi tube is placed above the B end of the variable pitch conveying helix. When the feeding machine is used, the quantity of materials in a conveying pipe is added, and the problems of wind return and zero drift of a rotor scale instrument are solved.

Description

technical field [0001] The invention relates to the electromechanical field, in particular to a feeding machine. Background technique [0002] In the coal feeding metering system of the rotary kiln, there are often problems such as the zero point drift of the rotor scale instrument caused by the backflow of the metering system to the feed port and the backflow of pulverized coal. The relevant solution is: use the screw coal supply pump (such as figure 1 , as shown) to achieve air-locking and mixing. A slope 203 and a counterweight plate 202 are set in the coal delivery pipe 201. The six-pole electrode is used to run at high speed to make the material enter the mixing bin 205, and then use the principle of the Venturi tube 204 to make the material be blown by high-pressure air. Transport away. This structure still has disadvantages. The coal consumption of the rotary kiln is much smaller than the delivery capacity of the coal pump, so the coal in the coal delivery pipe 201 ...

AI Technical Summary

Problems solved by technology

This structure still has disadvantages. The coal consumption of the rotary kiln is much smaller than the delivery capacity of the coal pump, so the coal in the coal delivery pipe 201 is very little, and there is a large gap in the upper part of the coal delivery pipe 201 provided with the delivery screw, thus forming Without a negative pressure zone, the wind sent into the Venturi tube will return to the rotor scale at the feed inlet from the upper gap of the coal delivery pipe 201, which will still cause the zero point drift of the rotor scale, and the pulverized coal will also return from the gap

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