CN212404031U - Gasification furnace feeding compaction and air locking device - Google Patents

Abstract

A feeding compaction and air locking device of a gasification furnace comprises a reducing shaftless spiral conveyor, an inert gas storage tank and a rotary pyrolysis domestic garbage gasification furnace, wherein an outlet is communicated with the rotary pyrolysis domestic garbage gasification furnace, a feeding small bin is arranged at an inlet, the spiral diameter of the reducing shaftless spiral conveyor gradually decreases along the direction from the inlet to the outlet, and the inert gas storage tank is communicated with the inner cavity of the reducing shaftless spiral conveyor through a pipeline; the outlet end of the reducing shaftless screw conveyor is provided with a screwless section. The utility model adopts the reducing shaftless screw conveyor with the spiral diameter at the outlet side smaller than that at the inlet side, gradually compacts the materials in the feeding process to increase the feeding amount, and sets the non-spiral section at the outlet end of the conveyor to ensure that the compacted materials form a material column, thereby reducing the amount of cold air entering the gasification furnace, increasing the high-temperature combustion-supporting air quantity and reducing the heat consumption; the inert gas storage tank is adopted, and when the material in the conveyor is less or no, the inert gas is introduced into the inner cavity of the conveyor to form a protective gas curtain, so that the phenomenon of explosion caused by the fact that a large amount of air enters the gasification furnace is avoided.

Description

Gasification furnace feeding compaction and air locking device

Technical Field

The utility model belongs to the technical field of the gasifier feeding, especially, relate to a gasifier feeding compaction and lock wind device.

Background

The garbage is solid waste generated in daily life and production of human beings, has large discharge amount, complex and various components, pollution, resource and socialization, needs harmless, resource, reduction and socialization treatment, and can pollute the environment, influence the environmental sanitation, waste resources, destroy the safety of production and life and destroy the social harmony if the garbage cannot be properly treated. The rotary pyrolysis gasifier is a household garbage pyrolysis gasification device, can rapidly remove garbage, carries out harmless treatment and finally reasonably utilizes the garbage.

The rotary type pyrolysis domestic garbage gasification furnace is generally fed by a circular pipe screw conveyor. In the feeding process, due to various reasons of unsmooth blanking, failure of a metering scale and the like, the feeding amount can be reduced or even cut off sometimes, when the material in the spiral conveyor is less or no, the atmosphere is communicated with the inside of the rotary gasification furnace through the spiral conveyor, the combustion of a drying area can be influenced when a small amount of air enters the furnace because of the micro negative pressure in the furnace during the production of the gasification furnace, the explosion danger can be caused when a large amount of air enters the gasification furnace, and equipment loss and personal injury and death can be caused when the safety production is seriously influenced. Meanwhile, the domestic waste raw material has the characteristics of high looseness and small density, the feeding port of the common spiral conveyor is small, and the conveying capacity is difficult to improve, so that the treatment capacity of the gasification furnace is influenced.

Disclosure of Invention

In view of the above technical problem, an object of the utility model is to provide a gasifier feeding compaction and lock wind device.

The utility model aims at adopting the following technical scheme to realize. According to the utility model provides a gasifier feeding compaction and lock wind device, including export and rotary pyrolysis domestic waste gasifier be linked together, the import is equipped with the feed little storehouse and its spiral diameter reduces along the import to the direction of export gradually so that the reducing shaftless screw conveyer of progressively compacting the material that gets into by the feed little storehouse when feeding, be linked together through the pipeline with the inner chamber of reducing shaftless screw conveyer and let in inert gas to the inner chamber of conveyer when the reducing shaftless screw conveyer is few material or when there is no material in the reducing shaftless screw conveyer and form the protection gas curtain in order to prevent the inert gas holder that the air from getting into the gasifier; the outlet end of the reducing shaftless screw conveyor is provided with a screwless section for compacting materials to form a material column during feeding so as to reduce the air amount entering the gasification furnace.

Further, the inert gas storage tank is, but not limited to, a nitrogen tank.

Furthermore, the outlet end of the reducing shaftless screw conveyor is provided with a 300-500 mm section without a screw.

The utility model relates to a gasifier feeding compaction and lock wind device adopts the reducing shaftless screw conveyer that outlet side screw diameter is less than the import side, to the material progressively compaction in order to increase the feeding volume at the in-process of feed to set up no spiral section so that the material of compaction forms the stock column at the exit end of conveyer, reduce the cold air volume that gets into in the gasifier, thereby increase the combustion-supporting amount of wind of high temperature, reduce the heat loss. The inert gas storage tank is adopted, and when the material in the conveyor is less or no, the inert gas is introduced into the inner cavity of the conveyor to form a protective gas curtain, so that the phenomenon of explosion caused by the fact that a large amount of air enters the gasification furnace is avoided.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of an embodiment of a gasification furnace feed compacting and air locking device of the present invention.

[ reference numerals ]

1-feeding small bin, 2-reducing shaftless screw conveyer, 3-nitrogen tank and 4-rotary type pyrolysis household garbage gasification furnace

Detailed Description

The present invention will be further described with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1, an embodiment of a material feeding, compacting and air locking device of a gasification furnace according to the present invention is shown. The embodiment comprises a reducing shaftless screw conveyor 2, an outlet of which is communicated with a rotary type pyrolysis household garbage gasification furnace (for convenience of explanation, hereinafter referred to as gasification furnace) 4, an inlet of which is provided with a small feeding bin 1, the screw diameter of which gradually decreases along the direction from the inlet to the outlet, and a nitrogen tank 3 which is communicated with the inner cavity of the reducing shaftless screw conveyor through a pipeline, wherein the outlet end of the reducing shaftless screw conveyor 2 is provided with a screwless section. Specifically, the reducing shaftless conveyor 2 is made of high-temperature-resistant materials, the cross section of the reducing shaftless conveyor is circular, the spiral diameter of an inlet side connected with the small feeding bin 1 is large, the spiral diameter of an outlet side connected with the gasification furnace 4 is small, materials entering from the small feeding bin are gradually compacted in the feeding process by means of the design, meanwhile, a 300-500 mm spiral-free section is arranged at the outlet end of the reducing shaftless conveyor 2 to enable the compacted materials to form a material column, the amount of cold air entering the gasification furnace 4 is reduced, accordingly, the high-temperature combustion-supporting air quantity is increased, and the heat consumption is reduced. If the nitrogen tank is communicated with the inner cavity of the reducing shaftless screw conveyor 2 through the air pipe, nitrogen is pressed into the inner cavity of the conveyor when the material in the screw conveyor is less or no material is caused by various reasons such as unsmooth blanking, failure of a metering scale and the like in the feeding process, and the nitrogen is used as inert gas to form a protective gas curtain, so that the phenomenon that a large amount of air enters the gasification furnace due to the fact that external cold air is communicated with the gasification furnace through the reducing shaftless screw conveyor is avoided. Other types of inert gases may be used in place of nitrogen in other embodiments of the present invention.

The working principle of the gasification furnace feeding compaction and air locking device in the embodiment is as follows: crushing the household garbage into granular materials with the diameter of 15-50 mm, screening the granular materials, and pouring the screened granular materials into a small feeding bin 1; starting the reducing shaftless screw conveyor 2, the screw blade pushes the material to the outlet side and gradually compacts the material, the compacted material can form a material column after reaching the screwless section so as to reduce the amount of cold air entering the gasification furnace 4, and the cold air enters the gasification furnace 4 after passing through the screwless section. When the material in the reducing shaftless screw conveyor 2 is little or no, the nitrogen tank can convey nitrogen into the inner cavity of the conveyor to form a protective gas curtain so as to prevent cold air from entering the gasification furnace.

As described above, the present invention is only a preferred embodiment of the present invention, and any person skilled in the art can easily modify, change or modify the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention.

Claims (3)

1. A gasification furnace feeding compaction and air locking device is characterized by comprising a reducing shaftless spiral conveyor, an inert gas storage tank and a protective gas curtain, wherein the outlet of the reducing shaftless spiral conveyor is communicated with a rotary pyrolysis household garbage gasification furnace, the inlet of the reducing shaftless spiral conveyor is provided with a small feeding bin, the spiral diameter of the reducing shaftless spiral conveyor is gradually reduced along the direction from the inlet to the outlet so as to gradually compact materials entering from the small feeding bin during feeding, the inert gas storage tank is communicated with the inner cavity of the reducing shaftless spiral conveyor through a pipeline, and inert gas is introduced into the inner cavity of the conveyor to form a protective gas curtain so as to prevent air from entering the gasification furnace when the materials in the reducing shaft; the outlet end of the reducing shaftless screw conveyor is provided with a screwless section for compacting materials to form a material column during feeding so as to reduce the air amount entering the gasification furnace.

2. The gasifier feed compaction and air lock device of claim 1, wherein the inert gas storage tank is but not limited to a nitrogen tank.

3. The gasifier feed compaction and lock wind device of claim 1, characterized in that the exit end of the reducing shaftless screw conveyor is provided with a 300-500 mm section without screw.

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