CN110926184A

CN110926184A - Shaftless double-helix drying device for dry components of ultrahigh-pressure dry-wet classified garbage

Info

Publication number: CN110926184A
Application number: CN201811095032.9A
Authority: CN
Inventors: 龚佰勋; 张涉; 倪彬; 黎莉; 邓晨; 曹桦钊
Original assignee: Shenzhen Longcheng High Tech Environmental Protection Co Ltd
Current assignee: Shenzhen Longcheng High Tech Environmental Protection Co Ltd
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2020-03-27

Abstract

The invention provides a garbage drying device, which solves the problem that the field of garbage drying lacks practical garbage drying equipment and provides necessary conditions for recycling rear-end garbage. The advantage of conveying the belt-shaped and easily-wound materials by using the shaftless double helix and the heat transfer mode of the central heating sleeve and the upper and lower jackets are utilized, so that the uniformity of heat transfer is realized, and the flowability of the garbage is also ensured. The method is not only suitable for further dehydrating and drying the dry components of the household garbage after ultrahigh-pressure dry-wet classification, but also can be extended to drying in other fields.

Description

Shaftless double-helix drying device for dry components of ultrahigh-pressure dry-wet classified garbage

Technical Field

The invention relates to a shaftless double-helix drying device for dry components of garbage subjected to ultrahigh pressure dry-wet classification, which is suitable for further dehydrating and drying the dry components (with the water content of about 35%) after the household garbage is subjected to ultrahigh pressure dry-wet classification, can be used as a pretreatment means for rear-end garbage recycling treatment (incineration, pyrolysis gasification and the like), and can also be suitable for drying and dehydrating other solid wastes.

Background

The ultrahigh pressure dry-wet classification equipment can reduce the water content of the household garbage to about 35 percent, improve the heat value to 150 percent of the original garbage and improve the average low-level heat value to 8253.87 kJ/kg.

Due to the moisture content of the materials, the moisture content of dry components can be reduced to below about 10% by theoretically realized drying and dehydration, the average heat value is improved to 11428.79 kJ/kg, and the method has obvious economic and environmental protection values for subsequent resource treatment. At present, no mature equipment or application cases exist for the drying treatment after the classification of the household garbage, and particularly no complete treatment equipment exists for the dry components after the ultrahigh pressure dry-wet classification at present.

The Japanese lunar island sludge dryer with the best application effect at home and abroad at present; the principle is that heating medium respectively enters a shell jacket of the dryer and an inner cavity of a blade shaft, a dryer body and the blade shaft are heated simultaneously, and materials are heated and dried in a conduction heating mode. The material is turned over and stirred by the rotation of the paddle, the heating interface is continuously updated, and the material is contacted with the body and the paddle and is fully heated, so that the surface moisture contained in the material is evaporated. Meanwhile, the materials are conveyed to the discharge port along the spiral track formed by the rotation of the paddle shaft, and are continuously stirred during conveying, so that the moisture seeped from the sludge is continuously evaporated. And finally, discharging the uniformly dried qualified product from a discharge hole.

Disclosure of Invention

The invention relates to a novel design for solving the problem of lacking of garbage drying equipment required by recycling dry components after ultrahigh pressure dry-wet classification. A set of drying equipment special for further dehydration of the dry component garbage is designed, and moisture contained in cells of the dry component garbage is further separated out, so that the moisture content of the dry component garbage is reduced to be below 10%, the heat value of the dry component garbage is improved, and conditions are provided for rear-end recycling treatment.

A shaftless double-helix drying device for dry components of ultrahigh-pressure dry-wet classified garbage mainly comprises an upper shell, a lower shell, a shaftless helix, a central heating sleeve and a transmission device. The dry component garbage which is in a belt shape and easy to wind is conveyed by a shaftless spiral conveyor, so that the flowability is good and the blockage is not easy to occur; the upper cylinder jacket, the lower cylinder jacket and the central sleeve are heated, so that the heat transfer area is increased, and the uniformity of heat transfer can be realized; the upper cylinder jacket and the lower cylinder jacket are divided into a front section and a rear section, and water vapor generated by drying is conveyed back to the front end of the jackets to preheat inlet garbage; the transmission part consists of a variable frequency motor, a cycloidal reducer, a transmission chain disc and a gear set, and realizes low rotating speed and adjusts the rotating speed according to working conditions.

The feeding port is arranged at the head of the upper shell, the discharging port is arranged at the tail of the lower shell, and the inlet and the outlet of the central heating sleeve and the inlet and the outlet of the jacket are respectively connected with the inlet and the outlet of the central heating sleeve, so that the whole process of the device is closed, and the leakage of odor is prevented.

Drawings

Fig. 1 is a schematic structural view-front view of a garbage drying device according to the present invention.

Fig. 2 is a schematic structural diagram-a sectional view of a garbage drying device according to the present invention.

Fig. 3 is a schematic structural diagram-a top view of a garbage drying device according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings.

As shown in fig. 1, 2 and 3. 1-screw, 2-central heating sleeve, 3-feed inlet, 4-discharge outlet, 5-transmission shaft, 6-moisture discharging outlet, 7-shaft seal, 8-front end bearing, 9-gear, 10-chain disc, 11-rear end bearing, 12-lower jacket front section coke discharging outlet, 13-lower jacket front section air outlet, 14-lower jacket rear section air outlet, 15-lower shell, 16-upper shell, 17-upper jacket, 18-lower jacket, 19-left screw, 20-right screw, 21-wear-resistant lining board, 22-front section air source interface, 23-upper jacket front section air inlet, 24-lower jacket front section left air inlet, 25-lower jacket front section right air inlet, 26-upper jacket front section air outlet, 27-upper jacket rear section right air inlet, 28-left air inlet at the rear section of the upper jacket, 29-right air inlet at the rear section of the lower jacket, 30-left air inlet at the rear section of the lower jacket, 31-air outlet at the rear section of the upper jacket, 32-driving transmission shaft and 33-driven transmission shaft.

The power of the dryer is from a variable frequency motor, the power of the motor is transmitted to a 10-chain disc through a speed reducer, the 10-chain disc drives a 32-driving transmission shaft to rotate, the 32-driving transmission shaft is driven by a 9-gear to drive a 33-driven transmission shaft to rotate, the transmission shaft and a 2-center heating sleeve are concentric pipes, a 5-transmission shaft and a 1-screw are connected through a bolt, and the rotating speed of the dryer can be adjusted according to the operating condition. The dry component garbage enters the dryer through the 3-feeding hole, is pushed by the double-shaft screw 19-left screw and the 20-right screw wrapped by the W-shaped 15-lower shell to be transmitted inside the dryer, and is discharged from the 4-discharging hole after being dried. Meanwhile, gas or other heat carrying gas generated by pyrolysis respectively enters a 2-center heating sleeve, a 23-upper jacket front section air inlet, a 24-lower jacket front section left air inlet and a 25-lower jacket front section right air inlet through a 22-front section air source interface to dry component garbage through jacket heat transfer, the dried gas is discharged through a 13-lower jacket front section air outlet, and a 12-lower jacket front section coke discharging port is designed due to the fact that pyrolysis gas contains a large amount of tar. Considering the shortage of pyrolysis gas quantity, the rear section of the dryer can preheat dry component garbage by using water vapor generated after drying, and can also be connected with other waste gas for heating, a heating gas source respectively enters the rear sections of the upper and lower jackets through 27-a right gas inlet at the rear section of the upper jacket, 28-a left gas inlet at the rear section of the upper jacket, 29-a right gas inlet at the rear section of the lower jacket, and 30-a left gas inlet at the rear section of the lower jacket, and the heated gas is discharged through 14-a gas outlet at the rear section of the lower jacket and 31-a gas outlet at the rear section of the upper jacket. The dry component garbage and the heating air source are in counter flow, so that the heat exchange efficiency is improved.

Claims

1. The invention discloses a shaftless double-helix drying device for dry components of garbage subjected to ultrahigh pressure dry-wet classification, which is characterized in that: adopts shaftless double helix transmission and adopts an upper jacket, a lower jacket and a central sleeve for heat transmission.

2. The shaftless double-helix drying device for the dry components of the garbage classified under the ultrahigh pressure dry-wet condition as claimed in claim 1, wherein the advantages of shaftless double-helix conveying belt-shaped materials easy to wind are combined with a dryer, so that the heat transfer drying of the dry component garbage can be realized, and the flowability of the dry component garbage can be ensured.

3. The shaftless double-helix drying device for the dry components of the garbage classified under the ultrahigh pressure and the dry and wet conditions as claimed in claim 1 is characterized in that the upper and lower jackets and the central sleeve are heated, so that not only is the heat transfer area increased, but also the uniformity of heat transfer can be realized.

4. The shaftless double-helix drying device for the dry components of the ultrahigh-pressure dry-wet classified garbage is characterized in that the upper and lower jackets are divided into a front section and a rear section, and the rear section can utilize water vapor or other low-quality waste gas generated by drying to convey the water vapor or other low-quality waste gas back to the jackets to preheat inlet garbage.