CN209801922U

CN209801922U - Wood chip drying device and charcoal preparation system

Info

Publication number: CN209801922U
Application number: CN201920311253.9U
Authority: CN
Inventors: 吴立成; 张伟; 黄建森
Original assignee: Guangxi Daonengjia Bioenergy Co Ltd
Current assignee: Guangxi Daonengjia Bioenergy Co Ltd
Priority date: 2019-03-12
Filing date: 2019-03-12
Publication date: 2019-12-17
Anticipated expiration: 2029-03-12

Abstract

The utility model discloses a saw-dust drying device and charcoal preparation system, wherein, saw-dust drying device includes base, a stoving section of thick bamboo, a plurality of stirring rotary vane and drive arrangement. The drying drum is circumferentially and rotatably arranged on the base; the drying drum comprises a plurality of drum bodies, and the end parts of the plurality of drum bodies are detachably butted with each other; a feed inlet and an air inlet have been seted up to a tip of a stoving section of thick bamboo, a discharge gate has been seted up to another tip of a stoving section of thick bamboo, the gas outlet has been seted up to the top of a stoving section of thick bamboo. The stirring rotary vanes are arranged on the inner wall of the drying drum and are arranged at intervals in the length direction of the drying drum. The drive device is installed on the base, the drive device is provided with a rotating gear, a circle of transmission teeth are arranged on the periphery of the drying cylinder, and the rotating gear is meshed with the transmission teeth. The utility model discloses technical scheme has improved the stoving effect of saw-dust.

Description

Wood chip drying device and charcoal preparation system

Technical Field

The utility model relates to a charcoal preparation technical field, in particular to saw-dust drying device and charcoal preparation system.

Background

charcoal is a combustible product obtained by carbonizing a biological material containing carbon components through a certain process. It is widely used in chafing dish, barbecue, etc. in metallurgical industry, chemical industry, agriculture and life.

Currently charcoal production is mainly by two methods. One is the traditional charcoal of kiln-burned trees (hereinafter referred to as charcoal), which has been greatly limited. The traditional kiln burning of the tree charcoal is time-consuming and labor-consuming, and the production efficiency is low; the wood with the diameter of more than 5 cm is used as the raw material, and the market price is high; three tons of raw materials produce one ton of charcoal, which causes serious resource waste and environmental damage. Another is some machine-made charcoal technology companies appearing in the market today, which take the following process steps: the raw materials are screened, crushed, dried, made into rods under high pressure, carbonized and then crushed to obtain the products of carbon powder and carbon rods.

In the drying process, the wood chips pass through a drying cylinder, hot air is introduced into the drying cylinder, and then the wood chips are dried. At present, a stoving section of thick bamboo adopts internally mounted to have the auger device to carry out the saw-dust conveying, but, the auger is stirring the in-process of saw-dust conveying, and it is little to turn over the degree, therefore the stoving effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a saw-dust drying device aims at solving among the current drying technology, the saw-dust problem that the effect is poor of drying.

In order to achieve the above object, the utility model provides a saw-dust drying device, include:

A base;

The drying drum is circumferentially and rotatably arranged on the base; the drying drum comprises a plurality of drum bodies, and the end parts of the plurality of drum bodies are detachably butted with each other; a feed inlet and an air inlet are formed in one end part of the drying cylinder, a discharge outlet is formed in the other end part of the drying cylinder, and an air outlet is formed above the drying cylinder;

A plurality of agitating rotary vanes which are arranged on the inner wall of the drying cylinder and are arranged at intervals in the length direction of the drying cylinder;

the driving device is installed on the base and provided with a rotating gear, a circle of transmission teeth are arranged on the periphery of the drying cylinder, and the rotating gear is meshed with the transmission teeth.

Preferably, the wood chip drying device further comprises a stirring device, and the stirring device is installed in the drying cylinder;

The stirring device comprises a rotating shaft and a plurality of stirring blades; the pivot is followed the length direction of drying cylinder extends to rotationally install in the middle part of drying cylinder, and a plurality of stirring vane evenly distributed is in the pivot periphery, and, stirring vane's place plane and the axis of pivot are the contained acute angle setting.

Preferably, the rotating shaft is hollow, the rotating shaft is provided with a first end and a second end which are opposite to each other, and the first end of the rotating shaft is communicated with the air inlet, so that air enters the inner cavity of the rotating shaft from the first end of the rotating shaft;

The surface of the rotating shaft is provided with a plurality of air outlet holes in a penetrating manner, and the air outlet holes are communicated with the inner cavity of the rotating shaft.

preferably, the stirring blade is provided with an inner cavity, and the inner cavity of the stirring blade is communicated with the inner cavity of the rotating shaft;

The stirring blade is provided with a plurality of exhaust holes, and the exhaust holes are communicated with the inner cavity of the stirring blade.

preferably, the first end of the rotating shaft is covered with a filter screen, and the second end of the rotating shaft is arranged in a closed manner.

preferably, the wood chip drying device further comprises the electrostatic dust removal device, and the electrostatic dust removal device is used for purifying the gas discharged from the gas outlet.

The utility model also provides a charcoal preparation system, which comprises a feeding device, a screening device, a drying device, a separating device, a bar making device, a carbonizing device and the charcoal drying device;

After the system charcoal raw materials pass through feed arrangement feeding, carry out raw materials screening back through screening plant, after drying through drying device, after separating through separator, suppress the system stick back through system stick device, after sending into the carbonizing apparatus through charcoal kiln-out device, the rethread charcoal kiln-out device sends out the carbonizing apparatus.

The utility model discloses among the technical scheme, the saw-dust mainly conveys through stirring the spiral leaf. Because, stir the rotary vane setting on drying cylinder's inner wall, consequently at drying cylinder pivoted in-process, the saw-dust can highly roll in whole section of thick bamboo, increases the range of rolling of saw-dust from this, increases saw-dust and gaseous area of contact and contact time of drying, has improved the stoving effect of saw-dust. In addition, a plurality of section of thick bamboo bodies can be dismantled each other, make things convenient for the clearance and the maintenance of a stoving section of thick bamboo.

Drawings

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a flow chart of the operation of the charcoal preparation system of the present invention;

Fig. 2 is a schematic structural view of an embodiment of the wood chip drying device of the present invention;

Fig. 3 is a cross-sectional view of a drying drum of the wood chip drying device of fig. 2;

Fig. 4 is the structure schematic diagram of the stirring device of the wood chip drying device of the present invention.

the reference numbers illustrate:

Reference numerals	name (R)	Reference numerals	Name (R)
				10	Wood chip drying device	20	Base seat
30	Drying cylinder	31	Cartridge body
				310	Feed inlet	320	Discharge port
330	Air inlet	340	Air outlet
				350	Transmission gear	40	Drive device
41	Rotating gear	50	Stirring rotary vane
				60	stirring device	61	Rotating shaft
610	First end	620	Second end
				62	Stirring blade	70	Filter screen

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a saw-dust drying device to and include this saw-dust drying device's charcoal preparation system.

Referring to fig. 1, the charcoal preparation system includes a feeding device, a sieving device, a wood chip drying device 10, a separating device, a rod making device, a carbonizing device, and a charcoal discharging device.

the feeding device comprises a feeding hopper through which feeding is carried out. A conveyor, particularly preferably a belt, is mounted below the discharge end of the feed hopper, so that the material of the feed hopper is conveyed by the belt. The feeding end of the conveyor belt discharges the fed materials to the screen mesh for raw material screening, the screened sawdust enters the sawdust drying device 10 to be dried, and the water content is smaller than 12% after the sawdust is dried. And (4) the dried material enters a rod making machine for high-temperature extrusion, so that the material is extruded to form a firewood rod. And then, discharging the firewood rods from the kiln through a charcoal discharging device after carbonizing the firewood rods. Finally, the carbon rods taken out of the kiln are cooled and covered to form the carbon material.

In the middle, the carbonization process can be generally divided into the following four stages:

1. Drying stage

the temperature in this stage is 20-150 c, the pyrolysis speed is very slow, mainly the moisture contained in the wood is evaporated by means of the heat supplied from the outside, and the chemical composition of the wood material is hardly changed.

2. Pre-carbonization stage

the temperature of the stage is 50-275 ℃, the thermal decomposition reaction of the wood material is obvious, the chemical composition of the wood material begins to change, and unstable components such as hemicellulose are decomposed to generate substances such as carbon dioxide, carbon monoxide and a small amount of acetic acid.

3. Carbonization stage

the temperature in this stage is 75-400 c, during which the wood material is subjected to a sharp thermal decomposition, producing a large amount of decomposition products. The generated liquid product contains a large amount of acetic acid, methanol and wood tar, the content of carbon dioxide in the generated gas product is gradually reduced, and the content of combustible gases such as methane, ethylene and the like is gradually increased. This stage releases a large amount of reaction heat and is therefore also referred to as the exothermic reaction stage.

4. Calcination stage

The temperature rises to 450-500 ℃, and the charcoal is calcined by supplying heat from the outside in the stage, so that volatile substances remained in the charcoal are discharged, and the fixed carbon content of the charcoal is improved. Little liquid product is formed at this point.

It should be noted that in practice the boundaries of these four stages are difficult to define, and since the heat received by the various parts of the carbonization device is different and the thermal conductivity of the wood material is smaller, the wood material is located at different positions in the device, and even inside and outside the bulk wood, may be in different pyrolysis stages.

On the other hand, with respect to the charcoal preparation system described above, the wood chip drying device is explained in detail.

Referring to fig. 2 and 3, the wood chip drying device 10 includes a base 20, and the base 20 supports a drying cylinder 30. Drying cylinder 30 is the setting of long tube-shape, and drying cylinder 30 includes a plurality of section of thick bamboo bodies 31, and the butt joint can be dismantled each other to the tip of a plurality of round section of thick bamboos. Therefore, the plurality of drum bodies 31 can be detached from each other, and cleaning and maintenance of the drying drum 30 are facilitated. Drum 30 is configured in a long cylindrical shape, and thus drum 30 has opposite ends. One end of the drying drum 30 is provided with a feed inlet 310 and an air inlet 330. The feed inlet 310 is used for wood chips to enter, and the air inlet 330 is used for drying air to enter. The other end of the drying cylinder 30 is provided with a discharge port 320 for discharging the dried sawdust. An air outlet 340 is arranged above the drying cylinder 30, and the gas after drying and heat exchange is discharged through the air outlet 340. In addition, during operation of drum 30, drum 30 is rotatable about its axis as shaft 61. Wherein the rotational mounting of drum 30 may be achieved by bearings.

The base 20 is further provided with a driving device 40, the driving device 40 includes a motor and a rotating gear 41, and the motor drives the rotating gear 41 to rotate. A ring of transmission teeth 350 is disposed on the periphery of the drying drum 30, and the transmission teeth 350 are engaged with the rotating gear 41, so that the rotating gear 41 rotates to drive the drying drum 30 to rotate.

A plurality of agitating vanes 50 are provided inside the drying drum 30, and the plurality of agitating vanes 50 are provided on the inner wall of the drying drum 30 and are spaced apart from each other in the length direction of the drying drum 30. Therefore, after entering from the feeding port 310, the wood chips are conveyed to the discharging port 320 by the stirring rotary vane 50 while being turned inside the drying drum 30 by the rotation of the drying drum 30 itself, and then discharged from the discharging port 320.

the concrete during operation: wood chips enter drum 30 through inlet 310, and drying air enters drum 30 through inlet 330. The drum 30 is rotated, and the chips are tumbled in the drum 30 and transferred toward the discharge port 320 by the agitating vane 50. Therefore, during the process of transferring the wood chips from the feeding port 310 to the discharging port 320, the wood chips are turned inside the barrel for drying, and then enter the next processing device after reaching the required drying degree.

in the technical scheme of the utility model, the saw-dust is mainly conveyed through stirring rotary vane 50. Because, stirring rotary vane 50 sets up on the inner wall of drying cylinder 30, consequently at drying cylinder 30 pivoted in-process, the saw-dust can highly roll in whole section of thick bamboo, increases the range of rolling of saw-dust from this, increases saw-dust and drying gas's area of contact and contact time, has improved the stoving effect of saw-dust. In addition, a plurality of section of thick bamboo bodies 31 can be dismantled each other, makes things convenient for the clearance and the maintenance of a section of thick bamboo 30 of drying.

On the basis of the above embodiment, referring to fig. 3, the wood chip drying device 10 further includes a stirring device 60, and the stirring device 60 is installed in the drying cylinder 30. The stirring device 60 includes a rotating shaft 61 and a plurality of stirring blades 62; the rotation shaft 61 extends along the length direction of the drum 30, and is rotatably installed at the middle of the drum 30. The stirring blades 62 are uniformly distributed on the periphery of the rotating shaft 61, and the plane of the stirring blades 62 and the axis of the rotating shaft 61 form an included acute angle.

It can be understood that the rotating shaft 61 rotates, and thus the rotating stirring blade 62 stirs the wood chips in the drying drum 30, thereby improving the drying effect. In addition, the plane of the stirring blade 62 and the axis of the rotating shaft 61 form an acute included angle, so that the wood chips are stirred and conveyed and are conveyed from the feeding port 310 to the discharging port 320.

Referring to fig. 3 and 4, based on the above embodiment, the rotating shaft 61 is hollow, the rotating shaft 61 has a first end 610 and a second end 620 opposite to each other, and the first end 610 of the rotating shaft 61 is communicated with the gas inlet 330, so that the gas enters the inner cavity of the rotating shaft 61 from the first end 610 of the rotating shaft 61. The surface of the rotating shaft 61 is provided with a plurality of air outlet holes in a penetrating manner, and the air outlet holes are communicated with the inner cavity of the rotating shaft 61.

In operation, while the drying air enters the drying cylinder 30 through the air inlet 330, a part of the air enters the inner cavity of the rotating shaft 61, and the part of the air is exhausted through the air outlet on the surface of the rotating shaft 61. Therefore, it can be understood that the stirring device 60 blows and dries the wood chips from the drying gas discharged from the gas outlet 340 on the surface of the rotating shaft 61 while stirring the wood chips, thereby increasing the contact between the drying gas and the wood chips by a large area and improving the drying effect of the wood chips.

further, with continuing reference to fig. 4, the stirring blade 62 has an inner cavity, and the inner cavity of the stirring blade 62 is communicated with the inner cavity of the rotating shaft 61; a plurality of exhaust holes are provided in the agitating blade 62, and the exhaust holes communicate with an inner cavity of the agitating blade 62.

It can be understood that, be provided with the exhaust hole on stirring blade 62, aim at the stoving in-process, the stoving gas is discharged from the exhaust hole on stirring blade 62, dries the saw-dust to improve the stoving effect of saw-dust by a wide margin.

Further, in order to prevent the wood dust from falling into the inner cavity of the rotating shaft 61 through the exhaust port and being blown out from the open end of the rotating shaft 61 by the revolving airflow, referring to fig. 4, the first end 610 of the rotating shaft 61 is covered with the filter screen 70, and the second end 620 of the rotating shaft 61 is closed, thereby preventing the above problem.

On the basis of any of the above embodiments, the wood chip drying device 10 further includes the electrostatic dust removing device (not shown), and the electrostatic dust removing device is used for purifying the gas discharged from the gas outlet 340.

Specifically, the wood chips are further subjected to a separation step between drying and bar making, the wood chips are mainly separated from drying gas, and in the separation process, due to pollution of the gas, a charcoal preparation system is further arranged and comprises an electrostatic dust removal device. The electrostatic dust collection device consists of two parts: one part is an electric dust collector body system, and the other part is a power supply device for providing high-voltage direct current and a low-voltage automatic control system. The basic principle is to capture the dust in the flue gas by using electricity, and the method mainly comprises the following four physical processes which are related to each other: (1) ionization of the gas. (2) And (4) charging the dust. (3) The charged dust moves toward the electrode. (4) And (4) trapping charged dust. Wherein the process of trapping the charged dust comprises the following steps: on two metal anodes and cathodes with larger curvature radius difference, an electric field enough for gas ionization is maintained by high-voltage direct current, and electrons generated after gas ionization are as follows: anions and cations, which adsorb on the dust passing through the electric field, charge the dust. Under the action of electric field force, the dust with different charged polarities moves to the electrodes with different polarities respectively and deposits on the electrodes, so that the purpose of separating dust from gas is achieved, and the effect of exhaust purification is realized.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a saw-dust drying device which characterized in that includes:

A base;

2. the wood chip drying device of claim 1, further comprising a stirring device installed in the drying cylinder;

3. the wood chip drying device of claim 2, wherein the shaft is hollow, the shaft having opposite first and second ends, the first end of the shaft being in communication with the air inlet such that air enters the interior of the shaft from the first end of the shaft;

4. The wood chip drying device according to claim 3, wherein the stirring blade has an inner cavity, and the inner cavity of the stirring blade is communicated with the inner cavity of the rotating shaft;

5. A wood chip drying device as defined in claim 3 or 4, wherein the first end of the rotary shaft is covered with a filter screen, and the second end of the rotary shaft is closed.

6. the wood chip drying device of claim 1, further comprising an electrostatic dust collector for cleaning the gas discharged from the gas outlet.

7. A charcoal preparation system comprising a feeding means, a sieving means, a drying means, a separating means, a rod making means, a carbonizing means, and the wood chip drying means according to any one of claims 1 to 6; after the system charcoal raw materials pass through feed arrangement feeding, carry out raw materials screening back through screening plant, after drying through saw-dust drying device, after separating through separator, suppress the system stick back through system stick device, after sending into the carbonizing apparatus through charcoal kiln-out device, the carbonizing apparatus is sent out to rethread charcoal kiln-out device.