Waste pyrolysis screw feed pump for household garbage and waste tires

Abstract

The invention discloses a waste pyrolysis screw feed pump for household garbage and waste tires. A first-stage screw feeder is provided with a hopper; a first threaded rod driven by a first motor is arranged in the hopper; the first threaded rod is provided with a first screw blade; the upper end of the hoper is connected with a feed hopper through a feeding hole; the bottom part of the hopper is a discharge hole communicated with a second-stage screw feeder; the inner space of the hopper is an air exchange chamber; the air exchange chamber is communicated with a negative-pressure generator; the feeding hole is provided with an inlet knife-type valve for opening and closing the feeding hole; the discharge hole is provided with an outlet knife-type valve for opening and closing the discharge hole; a second threaded rod driven by a second motor is arranged in a barrel of the second-stage screw feeder; and the second threaded rod is provided with a second threaded rod blade. The waste pyrolysis screw feed pump for the household garbage and the waste tires has the advantages that the structure is reasonable; the feed process is safe and controllable; and the environment cannot be polluted.

Description

technical field [0001] The invention relates to a screw feeding pump for pyrolysis of domestic garbage and waste tire waste. Background technique [0002] At present, for the pyrolysis disposal and utilization of household garbage and waste tire waste, the negative pressure high temperature pyrolysis process is generally adopted. The process operates under negative pressure, and the air enters the reactor along with the household garbage and waste tire waste, so that the product undergoes oxidation reaction; Air entry also produces dioxins, which are an inevitable consequence of the process. The feeding pump is suitable for the process of positive pressure and high temperature external heating, and the pyrolysis of domestic garbage, waste tires and other organic solid wastes. The density of these materials is generally 0.4-0.8T / m3, and the conventional screw conveyor is used for feeding. The filling coefficient is generally less than 0.5, and oil and gas leakage will inevit...

AI Technical Summary

Problems solved by technology

The feeding pump is suitable for the process of positive pressure and high temperature external heating, and the pyrolysis of domestic garbage, waste tires and other organic solid wastes. The density of these materials is generally 0.4-0.8T / m3, and the conventional screw conveyor is used for feeding. The filling coefficient is generally less than 0.5, and oil and gas leakage will inevitably occur in the positive pressure operation of the reactor; the contact friction coefficient between the material and the storage container wall is large, and the feeding is often interrupted due to material bridging and arching, which seriously hinders the anaerobic recovery of domestic garbage and waste tire waste. Or the implementation of oxygen-poor external pyrolysis process

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