CN202511586U - Rotary tillage type quick drying machine - Google Patents

Abstract

The utility model discloses a rotary tillage type quick-drying machine, which comprises a frame, on which a pulverized coal conveying bin is arranged, the top of the rear end of the pulverized coal conveying bin is provided with a feed port, and the bottom of the front end is provided with a discharge port. The transmission shaft driven by the power unit is connected in rotation in the pulverized coal delivery bin. The transmission shaft is a hollow shaft whose front and rear ends protrude from the pulverized coal delivery bin. The pulverized coal delivery device is installed on the transfer shaft. It is composed of an inner wall and an outer wall. There is a flue gas channel between the inner and outer walls. The rear end of the flue gas channel is provided with a hot air inlet. The front end of the flue gas channel communicates with the front end of the transmission shaft, and the rear end of the transmission shaft It is connected with an exhaust channel, and the top of the pulverized coal delivery bin is equipped with an induced draft fan which communicates with the inner cavity of the pulverized coal delivery bin. The utility model has a simple structure, can quickly and effectively dry the pulverized coal with high humidity, and has good drying effect and high efficiency.

Description

Rotary Tillage Dryer

technical field

The utility model relates to a rotary tillage type quick-drying machine.

Background technique

Pulverized coal is the main fuel for industrial boilers and power plant boilers. When pulverized coal is used as fuel alone, its thermal efficiency is affected because the combustion value of pulverized coal is not very high. The existing industrial boiler or power plant boiler users use the method of mixing coal powder and industrial compound additives in a certain proportion, and then making them into strips or cakes. Coal powder as a raw material is prone to condensation during transportation due to its high humidity, resulting in agglomeration and poor transportation.

Utility model content

The technical problem to be solved by the utility model is to provide a rotary tillage quick-drying machine for quickly drying coal powder.

In order to solve the above-mentioned technical problems, a rotary tillage quick-drying machine is provided, including a frame. There is a discharge port, and the transmission shaft driven by the power device is connected in rotation in the pulverized coal delivery bin. The transmission shaft is a hollow shaft whose front and rear ends protrude from the pulverized coal delivery bin. The warehouse wall in the lower part of the warehouse is composed of an inner wall and an outer wall. There is a flue gas channel between the inner and outer walls. The rear end of the flue gas channel is provided with a hot air inlet, and the front end of the flue gas channel is connected to the front end of the transmission shaft. , the rear end of the transmission shaft is connected with an exhaust channel, and the top of the pulverized coal delivery bin is equipped with an induced draft fan that communicates with the inner cavity of the pulverized coal delivery bin.

The pulverized coal conveying device includes two stages of conveying spirals mounted on the front and rear ends of the conveying shaft and a plurality of stirring teeth installed on the conveying shaft. The plurality of stirring teeth are located between the two conveying spirals and spiral along the outer surface of the conveying shaft. shape distribution.

A stirring plate is connected between the extending ends of some adjacent two stirring teeth.

The transmission shaft is also provided with a plurality of ventilation holes communicating with its inner cavity at intervals, and the outer surface of the transmission shaft is also fixedly connected with a ventilation cover located outside the ventilation holes.

The air-permeable cover is composed of two vertically arranged cover plates, and the longitudinal two ends of the two cover plates and the outer surface of the transmission shaft are air-ventilating passages.

The pulverized coal conveying bin is composed of an upper bin body and a lower bin body, and the bin wall of the lower bin body is composed of an inner wall and an outer layer wall, and the flue gas channel is located between the inner and outer walls of the lower bin body, The section of the lower bin body is roughly U-shaped.

The front end of the flue gas channel communicates with the front end of the transmission shaft through a circulating fan.

The dryer also includes a heating furnace, the flue gas outlet of the heating furnace communicates with the hot air inlet, and the exhaust port of the exhaust channel is connected with the heating furnace.

The exhaust channel is connected with the dust collector through a bypass branch.

The power device includes a reduction box and a motor connected with the reduction box. The power output shaft of the reduction box is equipped with a driving gear, and the extension section at the rear end of the transmission shaft is equipped with a driven gear meshing with the driving gear.

When the utility model is in use, pulverized coal with high humidity is put into the pulverized coal conveying bin through the feed port, hot air is introduced from the hot air inlet, and the pulverized coal is continuously pushed forward through the pulverized coal conveying device, and the hot air enters the hot air channel through the inner The layer wall heats the advancing pulverized coal, and the hot air can enter the inner cavity of the transmission shaft through the hot air channel, and also heat the pulverized coal through the outer wall of the transmission shaft, and finally the hot air is discharged from the exhaust channel, and the induced draft fan transports the pulverized coal to the warehouse The humid air in the middle is taken away, that is, while the pulverized coal is dried, the water vapor in it is discharged, so that the pulverized coal is dried.

The advantage of the pulverized coal conveying device consisting of two sections of conveying screw and stirring teeth is that the pulverized coal with high humidity will not be transported quickly in the pulverized coal conveying bin, so that the pulverized coal can be fully heated; the advantage of setting the turning plate is that the pulverized coal can be The pulverized coal is turned by it in the process of advancing, so that the pulverized coal is heated evenly; the setting of the ventilation holes and the ventilation cover is conducive to the hot air entering the inner cavity of the pulverized coal delivery bin, so that the pulverized coal is heated, and the setting of the ventilation cover effectively prevents the pulverized coal from Blocking the ventilation holes makes it easier for the hot air to blow to the pulverized coal; the circulation fan accelerates the hot air from the flue gas channel into the inner cavity of the transmission shaft; the heating furnace is installed to not only provide hot air for the hot air channel, but also to continue the hot air discharged from the exhaust channel. Entering the heating furnace, the hot air can be recycled, and the heat in the hot air can be fully utilized, and the energy saving effect is obvious.

To sum up, the utility model has a simple structure, can quickly and effectively dry coal powder with high humidity, and has good drying effect and high efficiency.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of direction A in Fig. 1;

Fig. 3 is a sectional view taken along line B-B in Fig. 1 .

Detailed ways

The rotary tillage quick-drying machine shown in Fig. 1 and Fig. 2 includes a frame 1 on which a pulverized coal conveying bin 2 arranged longitudinally is arranged, and the longitudinal side of the pulverized coal conveying bin 2 is sequentially arranged from back to front A dust collector 16, a heating furnace 15 and a circulating fan 14 are provided. The pulverized coal conveying bin 2 is composed of an upper bin body 21 and a lower bin body 22. The bin wall of the lower bin body 22 is composed of an inner layer wall and an outer layer wall. Between the outer walls is the flue gas channel 5, the section of the lower bin body 22 is roughly U-shaped, the upper bin body 21 can be composed of multiple sections and fixedly connected to the top of the lower bin body 22 respectively, and the top of the last upper bin body 21 is provided with an inlet Feed port 3, the top of the lower bin body 21 in the middle part is equipped with an induced draft fan 9 communicating with the air inlet and the inner cavity of the pulverized coal delivery bin 2, and the bottom of the lower bin body 22 front end is provided with a discharge port 18, and the discharge port 18 is equipped with The discharge funnel, the discharge funnel runs through the inner wall and the outer wall, and the transmission shaft 4 driven by the power device is connected to the pulverized coal delivery bin 2, and the front and rear ends of the transmission shaft 4 extend out of the pulverized coal delivery bin 2. Hollow shaft, the rear end of the flue gas passage 5 is provided with a hot air inlet 7, and the hot air inlet 7 is connected with the flue gas outlet of the heating furnace 15 through a pipeline, and the front end of the flue gas passage 5 is connected with the front end of the transmission shaft 4 through a circulating fan 14, That is, the front end of the flue gas channel 5 is connected to the air inlet of the circulation fan 14 through a pipeline, the front end of the transmission shaft 4 is connected to the air outlet of the circulation fan 14 through a pipeline, and the rear end of the transmission shaft 4 is connected to the exhaust channel 8 , the exhaust port of the exhaust channel 8 communicates with the inner cavity of the heating furnace 15 through a pipeline. Above-mentioned power unit comprises reduction box 17 and the electric motor that is connected with reduction box 17 powers, and driving gear 19 is housed on the power output shaft of reduction box 17, and the driven gear 20 that meshes with driving gear 19 is housed on the protruding section of transmission shaft 4 rear end .

As shown in Figures 1 and 3, a pulverized coal conveying device is installed on the conveying shaft 4, and the pulverized coal conveying device includes two sections of conveying screw 11 mounted on the front end and the rear end of the conveying shaft 4 and a plurality of agitators installed on the conveying shaft 4. Teeth 12, a plurality of stirring teeth 12 are located between two sections of conveying screw 11 and are distributed in a spiral shape along the outer surface of the conveying shaft 4, wherein part of the extending ends of two adjacent stirring teeth 12 are connected with vertically arranged flipping plates 13. When the transmission shaft 4 rotates, a plurality of helically arranged stirring teeth 12 carry out spiral conveying of the pulverized coal, and the turning plate 13 plays the role of turning the pulverized coal. The turning plates 13 shown in the figure are arranged at intervals, and can also be adjacent to each other. After several flipping plates 13 are set, after a certain distance, several adjacent flipping plates 13 are set. The transmission shaft 4 is also provided with a plurality of ventilation holes 6 communicating with its inner cavity at intervals, and the outer surface of the transmission shaft 4 is also fixedly connected to the ventilation cover 10 outside the ventilation holes 6. The ventilation cover 10 is composed of two vertically arranged cover plates. The two cover plates can be replaced by angle steel, and the longitudinal two ends of the two cover plates and the outer surface of the transmission shaft 4 are ventilation passages.

The utility model can be used not only for drying coal powder, but also for drying other powdery articles.

Claims (10)

1. rotary tillage formula fast drying machine; Comprise frame (1); It is characterized in that being equipped with on the frame (1) coal dust and carry storehouse (2), the top, rear end in coal dust conveying storehouse (2) is provided with charging aperture (3), front bottom end is provided with discharging opening (18), and coal dust is carried and is rotatably connected to the transmission shaft (4) that is driven by power set in the storehouse (2); Transmission shaft (4) all stretches out the hollow shaft that coal dust is carried storehouse (2) for the front and back end; Transmission shaft is equipped with the coal dust conveyer on (4), and coal dust carries the bulkhead of middle and lower part, storehouse (2) to be made up of inner layer wall and outer wall, is exhaust gases passes (5) between the inside and outside layer wall; The rear end of exhaust gases passes (5) is provided with hot blast import (7); The front end of exhaust gases passes (5) is communicated with the front end of transmission shaft (4), and the rear end of transmission shaft (4) is connected with air exhaust passage (8), and coal dust carries the top in storehouse (2) that air inlet is housed and coal dust is carried the air-introduced machine (9) of storehouse (2) inner chamber UNICOM.

2. rotary tillage formula fast drying machine according to claim 1; It is characterized in that: said coal dust conveyer comprises that be contained in transmission shaft (4) front-end and back-end two sections transmit spirals (11) and are installed in a plurality of stirrer gears (12) on the transmission shaft (4), and a plurality of stirrer gears (12) are positioned between two sections transmission spirals (11) and along the outer surface spiral of transmission shaft (4).

3. rotary tillage formula fast drying machine according to claim 2 is characterized in that: the center is divided to be connected with between the overhanging end of adjacent two stirrer gears (12) and is stirred plate (13).

4. rotary tillage formula fast drying machine according to claim 1; It is characterized in that: also be arranged at intervals with a plurality of air-vents (6) that are communicated with its inner chamber on the said transmission shaft (4), the also affixed ventilating cover (10) that is positioned at air-vent (6) outside of the outer surface of transmission shaft (4).

5. rotary tillage formula fast drying machine according to claim 4 is characterized in that: said ventilating cover (10) is made up of two cover plates of vertical setting, and the outer surface of vertical two ends of two cover plates and transmission shaft (4) is a gas-permeable channels.

6. rotary tillage formula fast drying machine according to claim 1; It is characterized in that: said coal dust carries storehouse (2) to be made up of last warehouse (21) and following warehouse (22); The bulkhead of following warehouse (22) is made up of inner layer wall and outer wall; Said exhaust gases passes (5) is between the inside and outside layer wall of following warehouse, and the cross section of following warehouse (22) roughly takes the shape of the letter U.

7. according to each described rotary tillage formula fast drying machine among the claim 1-6, it is characterized in that: the front end of said exhaust gases passes (5) is communicated with the front end of transmission shaft (4) through circulating fan (14).

8. rotary tillage formula fast drying machine according to claim 1; It is characterized in that: this dryer also comprises heating furnace (15); The exhanst gas outlet of heating furnace (15) is communicated with said hot blast import (7), and the exhaust outlet of air exhaust passage (8) is connected on the heating furnace (15).

9. rotary tillage formula fast drying machine according to claim 8 is characterized in that: air exhaust passage (8) is gone up through the bypass branch road and is connected with deduster (16).

10. rotary tillage formula fast drying machine according to claim 1; It is characterized in that: said power set comprise reduction box (17) and the motor that is connected with reduction box (17) power; Driving gear (19) is housed on the power output shaft of reduction box (17), the driven gear (20) with driving gear (19) engagement is housed on the section of stretching out of transmission shaft (4) rear end.

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