阅读说明：本技术 一种污泥与秸秆共热解制备生物炭的一体化装置 (Integrated device for preparing biochar by co-pyrolysis of sludge and straw ) 是由 柏继松 甘伟 林顺洪 郭大江 季炫宇 杨宇 杨鲁 傅欣 于 2020-04-26 设计创作，主要内容包括：本发明属于生物炭技术领域,提供了一种污泥与秸秆共热解制备生物炭的一体化装置,包括破碎装置和炭化装置；所述破碎装置包括破碎仓、进料储仓、破碎机构以及第一筛板；所述炭化装置包括炭化仓和搅拌机构。本装置简化了污泥与秸秆供热制备生物炭的制备步骤和制备设备,减少各工序衔接的时间,提高工作效率。(The invention belongs to the technical field of biochar, and provides an integrated device for preparing biochar by co-pyrolysis of sludge and straws, which comprises a crushing device and a carbonization device; the crushing device comprises a crushing bin, a feeding storage bin, a crushing mechanism and a first sieve plate; the carbonization device comprises a carbonization bin and a stirring mechanism. The device simplifies the preparation steps and preparation equipment for preparing the biochar by heating the sludge and the straws, reduces the connection time of all the working procedures and improves the working efficiency.)

1. The utility model provides an integrated device of mud and straw copyrolysis preparation biochar which characterized in that: comprises a crushing device and a carbonization device;

The crushing device comprises:

The crushing bin is provided with a crushing cavity, the wall of the crushing bin is provided with a hollow interlayer, the upper part of the crushing bin is provided with a first feeding hole communicated with the crushing cavity, a steam outlet and a first flue gas outlet communicated with the interlayer, and the lower part of the crushing bin is provided with a flue gas inlet communicated with the interlayer;

The feeding storage bin is arranged at the bottom of the crushing bin, is communicated with the crushing cavity, is provided with a first valve capable of being opened and closed at the lower part and is provided with a first discharge hole at the bottom;

The crushing mechanism comprises two crushing shafts arranged in the crushing cavity in parallel and crushing blades arranged at intervals along the extending direction of the crushing shafts; and

A first screen deck disposed within the crushing chamber below the crushing blades and above the feed bin;

The carbonizing device comprises:

The wall of the carbonization bin is wound with an electromagnetic heating coil, the upper part of the carbonization bin is provided with a second feed inlet and a second flue gas outlet which are communicated with the carbonization cavity, the lower part of the carbonization bin is provided with a second discharge outlet which is communicated with the carbonization cavity, the second feed inlet is communicated with the first discharge outlet, and the second flue gas outlet is communicated with the flue gas inlet;

And the stirring mechanism comprises a stirring shaft which is rotatably arranged in the carbonization bin and a paddle which is arranged on the stirring shaft.

2. The integrated apparatus of claim 1, wherein: the crushing device further comprises:

The second sieve plate is positioned below the first sieve plate and above the feeding storage bin, and the mesh number of the second sieve plate is larger than that of the first sieve plate;

The two ends of the second sieve plate are respectively provided with a material leaking plate, and material leaking holes are formed in the material leaking plates;

The first scraping plate is arranged in the crushing bin in a sliding mode along the transverse direction and used for conveying the materials on the second sieve plate to the material leaking plates at two ends of the second sieve plate;

A reciprocating linear motion mechanism for driving the squeegee;

The upper end of the guide chute extends into the crushing bin and is communicated with the material leaking hole;

A horizontal screw conveyor having a horizontal trough communicating with a lower end of the guide chute; and

A vertical screw conveyor for conveying material in the horizontal screw conveyor into the crushing chamber.

3. The integrated apparatus of claim 2, wherein: the reciprocating linear motion mechanism comprises two belt transmission mechanisms which are oppositely arranged on two sides of the first scraper and a connecting shaft which is used for connecting the two belt transmission mechanisms in a transmission manner so as to enable the two belt transmission mechanisms to synchronously transmit, and two sides of the first scraper are respectively connected with a transmission belt in the belt transmission mechanisms.

4. The integrated apparatus of claim 3, wherein: the crushing bin further comprises two baffle plates which are arranged at two ends of the second sieve plate along the longitudinal direction, the baffle plates are positioned between the first sieve plate and the second sieve plate, the upper ends of the baffle plates are hinged with the bin wall of the crushing bin through hinge shafts, and torsional springs are sleeved on the hinge shafts; in a natural state, the baffle is kept at a longitudinal position, and when the baffle is at the longitudinal position, the baffle can prevent materials from entering the material leakage holes from the second sieve plate.

5. The integrated apparatus of claim 2, wherein: the first sieve plate comprises a plurality of plate bodies which are adjacently arranged, and the plate bodies are rotationally connected with the crushing bin through rotating shafts; the crushing device further comprises a turnover device which is used for driving the plurality of blocks and simultaneously rotates the plate body, wherein the turnover device comprises a plurality of turnover gears which are respectively sleeved on the rotating shaft and used for driving any one of the turnover gears, and the adjacent turnover gears are meshed with each other.

6. The integrated apparatus of claim 1, wherein: the carbonization chamber is internally provided with a carbonization chamber, the carbonization chamber is internally provided with a stirring shaft, the carbonization chamber is internally provided with a second scraper blade, the second scraper blade is longitudinally arranged in the carbonization chamber, the second scraper blade is fixed on the stirring shaft through a support, and the second scraper blade is close to the inner wall of the carbonization chamber.

7. The integrated apparatus of claim 1, wherein: the bottom of the second scraper blade and the bottom of the stirring shaft are both provided with conical bulges used for scattering materials bonded together.

8. The integrated apparatus of claim 1, wherein: the paddle comprises a first paddle and a second paddle, the first paddle is used for stirring materials downwards, the second paddle is used for stirring materials upwards, and the first paddle is located above the second paddle.

Technical Field

The invention relates to the technical field of biochar, in particular to an integrated device for preparing biochar by co-pyrolysis of sludge and straws.

Background

Sludge pyrolysis is an effective method for treating sludge, and is a chemical process for heating sludge under oxygen-free or anoxic conditions to convert the sludge into gaseous, liquid and solid products. The water content and volume of the sludge can be greatly reduced, so that the sludge is convenient to transport; degrading organic toxicant to eliminate harmful bacteria and foul sludge; the heavy metal can be effectively fixed, and the heavy metal in water and soil can be adsorbed; greatly reduces the pollution capacity of the sludge and achieves the effect of resource utilization of the sludge.

However, the sludge contains less organic substances and more volatile components, moisture and heavy metals, so that the volatile analysis performance and the solid product adsorption performance of the sludge are poor when the sludge is pyrolyzed independently, and the solid phase yield is low. The straw has the characteristics of low water content, low ash content and high fixed carbon content, and is an ideal raw material for preparing the activated carbon adsorbent, so the biochar is prepared by co-pyrolysis of the sludge and the straw, the utilization efficiency of the straw can be effectively improved by the technology, and the technology has important significance in resource utilization of the sludge and the straw.

According to the traditional method for preparing the biochar, before preparation, sludge and straws need to be crushed firstly, then drying is carried out, finally the sludge and the straws are fully mixed and then pyrolyzed to prepare the biochar, the preparation steps are various, equipment is complex, the preparation process needs to be transferred, the connection time between the working procedures is prolonged, and therefore the working efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an integrated device for preparing biochar by co-pyrolysis of sludge and straws, so as to simplify preparation steps and preparation equipment, reduce the connection time of all working procedures and improve the working efficiency.

In order to realize the aim, the invention provides an integrated device for preparing biochar by co-pyrolyzing sludge and straws, which comprises a crushing device and a carbonization device;

The crushing device comprises:

The crushing bin is provided with a crushing cavity, the wall of the crushing bin is provided with a hollow interlayer, the upper part of the crushing bin is provided with a first feeding hole communicated with the crushing cavity, a steam outlet and a first flue gas outlet communicated with the interlayer, and the lower part of the crushing bin is provided with a flue gas inlet communicated with the interlayer;

The feeding storage bin is arranged at the bottom of the crushing bin, is communicated with the crushing cavity, is provided with a first valve capable of being opened and closed at the lower part and is provided with a first discharge hole at the bottom;

The crushing mechanism comprises two crushing shafts arranged in the crushing cavity in parallel and crushing blades arranged at intervals along the extending direction of the crushing shafts; and

A first screen deck disposed within the crushing chamber below the crushing blades and above the feed bin;

The carbonizing device comprises:

The wall of the carbonization bin is wound with an electromagnetic heating coil, the upper part of the carbonization bin is provided with a second feed inlet and a second flue gas outlet which are communicated with the carbonization cavity, the lower part of the carbonization bin is provided with a second discharge outlet which is communicated with the carbonization cavity, the second feed inlet is communicated with the first discharge outlet, and the second flue gas outlet is communicated with the flue gas inlet;

And the stirring mechanism comprises a stirring shaft which is rotatably arranged in the carbonization bin and a paddle which is arranged on the stirring shaft.

Further, the crushing device further comprises:

The second sieve plate is positioned below the first sieve plate and above the feeding storage bin, and the mesh number of the second sieve plate is larger than that of the first sieve plate;

The two ends of the second sieve plate are respectively provided with a material leaking plate, and material leaking holes are formed in the material leaking plates;

The first scraping plate is arranged in the crushing bin in a sliding mode along the transverse direction and used for conveying the materials on the second sieve plate to the material leaking plates at two ends of the second sieve plate;

A reciprocating linear motion mechanism for driving the squeegee;

The upper end of the guide chute extends into the crushing bin and is communicated with the material leaking hole;

A horizontal screw conveyor having a horizontal trough communicating with a lower end of the guide chute; and

A vertical screw conveyor for conveying material in the horizontal screw conveyor into the crushing chamber.

Furthermore, the reciprocating linear motion mechanism comprises two belt transmission mechanisms which are oppositely arranged on two sides of the first scraper and a connecting shaft which is used for connecting the two belt transmission mechanisms in a transmission manner so as to enable the two belt transmission mechanisms to synchronously transmit, and two sides of the first scraper are respectively connected with a transmission belt in one belt transmission mechanism.

The crushing bin further comprises two baffle plates which are arranged at two ends of the second sieve plate along the longitudinal direction, the baffle plates are positioned between the first sieve plate and the second sieve plate, the upper ends of the baffle plates are hinged with the bin wall of the crushing bin through hinge shafts, and torsional springs are sleeved on the hinge shafts; in a natural state, the baffle is kept at a longitudinal position, and when the baffle is at the longitudinal position, the baffle can prevent materials from entering the material leakage holes from the second sieve plate.

Furthermore, the first sieve plate comprises a plurality of plate bodies which are adjacently arranged, and the plate bodies are rotationally connected with the crushing bin through rotating shafts; the crushing device further comprises a turnover device which is used for driving the plurality of blocks and simultaneously rotates the plate body, wherein the turnover device comprises a plurality of turnover gears which are respectively sleeved on the rotating shaft and used for driving any one of the turnover gears, and the adjacent turnover gears are meshed with each other.

Further, the carbonization device also comprises a second scraper blade which is arranged in the carbonization cavity along the longitudinal direction, the second scraper blade is fixed on the stirring shaft through a support, and the second scraper blade is arranged close to the inner wall of the carbonization bin.

Furthermore, the bottom of the second scraper blade and the bottom of the stirring shaft are both provided with conical bulges for scattering the materials bonded together.

Further, the paddle comprises a first paddle for stirring the materials downwards and a second paddle for stirring the materials upwards, and the first paddle is positioned above the second paddle.

The invention has the beneficial effects that: this device is with drying, breakage, stirring, pyrolysis integration, has reduced complicated preparation step, and drying and breakage go on simultaneously, and stirring and pyrolysis go on simultaneously, need not the transfer, have reduced the time that each process links up, have improved work efficiency.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a perspective view of an integrated device for preparing biochar by co-pyrolysis of sludge and straw according to an embodiment of the invention;

FIG. 2 is a half sectional view of FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

Fig. 4 is a partial perspective view of the integrated device for preparing biochar by co-pyrolysis of sludge and straws, which is provided by the embodiment of the invention in fig. 1.

Reference numerals:

10-a crushing device;

11-a crushing bin, 111-a separation layer, 112-a first feeding hole, 113-a steam outlet, 114-a first smoke outlet, 115-a smoke inlet, 116-a feeding storage bin, 1161-a feeding pipe, 117-a first sieve plate, 1171-a plate body, 118-a second sieve plate and 119-a baffle plate;

12-crushing mechanism, 121-crushing blade, 122-transmission gear, 123-crushing motor;

13-a first scraper;

14-reciprocating linear motion mechanism, 141-belt transmission mechanism, 142-connecting shaft and 143-driving motor;

18-turnover device, 181-turnover gear and 182-turnover motor;

20-a carbonization device;

21-a carbonization bin, 211-a second feeding hole, 212-a second flue gas outlet, 213-a second discharging hole, 22-heat preservation cotton and 23-an electromagnetic heating coil;

24-stirring device, 241-stirring shaft, 242-first blade, 243-second blade, 244-second scraper, 245-conical projection and 246-stirring motor;

34-horizontal screw conveyor, 341-horizontal trough, 342-horizontal screw shaft;

35-vertical screw conveyor, 351-vertical trough, 352-vertical screw conveyor.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 4, the present embodiment provides an integrated device for preparing biochar by co-pyrolysis of sludge and straw, comprising a crushing device 10, a carbonization device 20 located below the crushing device 10, and a frame (not shown in the drawings) for installing the crushing device 10 and the carbonization device 20.

The crushing plant 10 comprises a crushing bin, a feed bin 116, a crushing mechanism 12 and a first screen deck 117. The inside of crushing storehouse has broken chamber, and the bulkhead of crushing storehouse is constructed into and has hollow interlayer 111, and it has the low temperature flue gas that carries out the drying to the material in the broken intracavity to lead to in interlayer 111. The flue gas inlet 115 is located at the lower part of the crushing bin, and the first flue gas outlet 114 is located at the upper part of the crushing bin. In addition, the upper part of the crushing bin is also provided with a first feed inlet 112 for feeding materials into the crushing cavity and a steam outlet 113 for discharging steam generated by drying in the crushing cavity.

The feeding storage bin 116 is located at the bottom of the crushing bin and is connected with the crushing bin into a whole, and the inside of the feeding storage bin 116 is communicated with the crushing cavity. The feeding pipe 1161 is installed at the lower part of the feeding storage bin 116, the feeding pipe 1161 is communicated with the carbonization device 20, and the feeding pipe 1161 is provided with a first openable valve which can be an electric valve or a pneumatic or hydraulic valve. The bottom of the feed bin 116 is the first outlet, i.e., the outlet of the feed tube 1161.

The crushing mechanism 12 includes a crushing shaft, a crushing blade 121, a transmission gear 122, and a crushing motor 123. Two crushing shafts are arranged in parallel in the crushing cavity, a plurality of crushing blades 121 are arranged on each crushing shaft at intervals along the extending direction of the crushing shaft, and the crushing blades 121 on the two crushing shafts are distributed in a staggered mode. One end of each crushing shaft is sleeved with a transmission gear 122, the two transmission gears 122 are meshed with each other, and one of the crushing shafts is driven by a crushing motor 123.

First sieve 117 is fixed in broken intracavity along transversely, and it is located between crushing blade 121 and the feeding storage 116, and first sieve 117 screens the material after the breakage, makes the material that satisfies certain particle diameter requirement enter into feeding storage 116 in to finally enter into carbomorphism device 20 and carry out the carbomorphism.

The carbonizing device 20 includes a carbonizing device 21 and an agitating mechanism.

The carbonizing device 21 is provided with a carbonizing cavity, the wall of the chamber is provided with heat insulation cotton 22, and an electromagnetic heating coil 23 is wound outside the heat insulation cotton 22. The upper part of the carbonization device 21 is provided with a second feed inlet 211 and a second flue gas outlet 212 which are communicated with the carbonization cavity, and the second flue gas outlet 212 is communicated with the flue gas inlet 115. The lower part of the carbonization device 21 is provided with a second discharge hole 213 communicated with the carbonization chamber, the second feed inlet 211 is communicated with the first discharge hole, a second valve is arranged at the second discharge hole 213, and the final finished product flows out from the second discharge hole 213.

The stirring mechanism comprises a stirring shaft 241 longitudinally installed in the carbonization device 21, a blade installed on the stirring shaft 241, and a stirring motor 246 installed outside the carbonization device 21 for driving the stirring shaft 241 to rotate.

In this embodiment, sludge and straw (hereinafter, both are referred to as materials) enter from the first feeding port 112 of the crushing bin, and are crushed by the crushing shaft, after the crushing, the materials meeting the particle size requirement fall into the feeding storage bin 116 below through the first sieve plate 117, and after a certain time, the first valve is opened, and the materials enter the carbonization device 21 through the first discharging port. The material is pyrolyzed in the carbonizing device 21 under the stirring of the stirring shaft 241, so as to be prepared into biochar, and finally, the second valve is opened, and the biochar is discharged from the second discharge hole 213. The heat required by the carbonization device 21 in the carbonization process is provided by the electromagnetic heating coil 23, and the bin wall, the stirring shaft 241 and the blades of the carbonization device 21 are heated in an electromagnetic heating mode. The flue gas with higher temperature generated in the carbonization process is discharged from the second flue gas outlet 212 and enters the crushing bin through the flue gas inlet 115, so that the materials in the crushing bin are dried, and the multi-stage utilization of energy is realized.

In one embodiment, the crushing device 10 further comprises a second screen deck 118, a breaker plate, a first scraper 14, a reciprocating linear motion mechanism 14, a material guide chute, a horizontal screw conveyor 34, and a vertical screw conveyor 35. The second screen deck 118 is installed in the crushing bin below the first screen deck 117 and above the feed bin 116, and the mesh size of the second screen deck 118 is larger than that of the first screen deck 117, i.e. the particle size of the material flow particles filtered by the second screen deck 118 is smaller. Two material leaking plates are respectively arranged at two ends of the second sieve plate 118, material leaking holes are formed in the material leaking plates, the upper surfaces of the material leaking plates and the upper surface of the second sieve plate 118 are preferably coplanar, and the material leaking holes can be material through holes with larger particle sizes, which cannot be filtered by the second sieve plate 118.

The first scraping plate 14 is arranged in the crushing bin in a sliding mode along the transverse direction, and the bottom of the first scraping plate is close to the upper surface of the second sieve plate 118 or directly contacts with the upper surface of the second sieve plate 118, so that materials on the second sieve plate 118 can be conveyed to the material leaking plates at two ends of the second sieve plate 118 in the process that the first scraping plate 14 moves back and forth. Two opposite bin walls of the crushing bin are respectively provided with a sliding slot, two sides of the first scraper 14 respectively slide in the two sliding slots, and the movement of the first scraper 14 is driven by a reciprocating linear motion mechanism 14.

The upper end of baffle box stretches into in the broken storehouse to with the hole intercommunication that leaks, the lower extreme of baffle box stretches out outside broken storehouse, sealing connection between baffle box and the broken storehouse avoids the dust excessive.

The horizontal screw conveyor 34 includes a horizontal trough 341 and a horizontal screw shaft 342, and the lower end of the guide chute communicates with the upper portion of the horizontal trough 341 so that the material falling from the hopper plate is introduced into the horizontal screw conveyor 34 through the guide chute.

The vertical screw conveyor 35 includes a vertical trough 351 and a vertical screw shaft, and the vertical trough 351 is fixed outside the bin wall of the crushing bin. The lower end of the vertical trough 351 is communicated with the discharge end of the horizontal trough 341, and the discharge hole at the upper end extends into the crushing cavity. The material at the discharge end of the horizontal chute 341 is sent into the crushing cavity through the vertical screw shaft.

In this embodiment, the material filtered by the first screen deck 117 falls onto the second screen deck 118, the material that cannot be filtered by the first screen deck 117 is isolated by the first screen deck 117 at the bottom of the crushing chamber, and then falls into the material on the second screen deck 118, a part of the material with smaller particle size falls into the feeding bin 116 for temporary storage, and the material that cannot be filtered by the second screen deck 118 is sent to the material leaking plate by the first scraper 14. When the first scraper 14 moves in one direction, the material on the second sieve plate 118 is conveyed towards one material leaking plate, and because the material in the upper first sieve plate 117 continuously falls down, the material on the second sieve plate 118 is conveyed towards the other material leaking plate by the first scraper 14 in the process that the first scraper 14 moves in the opposite direction. Thus, the first scraper 14 moves back and forth to remove the material on the second screen plate 118 that cannot be filtered, and prevent the material from blocking the screen holes of the second screen plate 118. Due to the fact that logistics are broken and not thoroughly separated, through the arrangement, it can be guaranteed that the second screen plate 118 is not blocked.

In one embodiment, the reciprocating linear motion mechanism 14 includes two belt transmission mechanisms 141 oppositely disposed at both sides of the first scraper 14, a connecting shaft 142 for driving the two belt transmission mechanisms 141 so as to synchronously drive the two belt transmission mechanisms 141, and a driving motor 143 for driving one of the belt transmission mechanisms 141 to rotate. Two connecting shafts 142 are arranged in parallel, and two sides of the first scraper 14 are respectively fixedly connected with a transmission belt in one belt transmission mechanism 141. The reciprocating linear motion mechanism 14 has a compact structure.

In one embodiment, the crushing bin further comprises two baffle plates 119 arranged at two ends of the second sieve plate 118 along the longitudinal direction, the baffle plates 119 are positioned between the first sieve plate 117 and the second sieve plate 118, and the upper ends of the baffle plates 119 are hinged with the bin wall of the crushing bin through hinge shafts. The hinge shaft is sleeved with a torsion spring (not shown in the figure), one end of the torsion spring is abutted to the baffle 119, and the other end of the torsion spring is abutted to the bin wall of the crushing bin. In the natural state, the shutter 119 is held in the longitudinal position due to the action of the torsion spring. And when the baffle 119 is in the longitudinal position, the baffle 119 can block the material from entering the material leaking hole from the second screen plate 118. When the first scraper 14 conveys the material to the material leaking plate, the material pushed by the first scraper 14 pushes the baffle 119 away, and then falls into the material leaking hole. The purpose of the baffles 119 is to prevent excess material that may be filtered by the second screening deck 118 from falling onto the second screening deck 118, then directly falling onto the blanking plate and flowing away from the blanking apertures, thereby reducing the amount of filtration by the second screening deck 118.

In one embodiment, the first screen deck 117 comprises a plurality of adjacently disposed plate bodies 1171, the plate bodies 1171 being rotatably connected to the crushing bin by a rotating shaft. The smaller spacing between adjacent plate bodies 1171 ensures that the individual plate bodies 1171 can be properly inverted and that the spacing is not greater than the diameter of the openings in the first screen deck 117. The crushing device 10 further comprises a turnover device 18 for driving the plurality of plate bodies 1171 to rotate simultaneously, the turnover device 18 comprises a plurality of turnover gears 181 which are respectively sleeved on the rotating shaft and a turnover motor 182 for driving any one of the turnover gears 181 to rotate, and two adjacent turnover gears 181 are meshed with each other. After a batch of material is broken at broken intracavity and finishes, always can remain some materials on first sieve 117, consequently, through above-mentioned setting, overturn through the polylith plate body 1171 that will constitute first sieve 117 for remaining material can fall into on the second sieve 118 on the first sieve 117, and then has solved the remaining problem of material on the first sieve 117.

In one embodiment, a second scraper 244 is further included, which is arranged in the longitudinal direction inside the carbonization chamber, the second scraper 244 is fixed on the stirring shaft 241 through a bracket, and the second scraper 244 is arranged near the inner wall of the carbonization device 21. Part of the material will be attached to the wall of the carbonization device 21 during the carbonization process, and the attached material is scraped off by the second scraper 244.

In one embodiment, the bottom of the second scraper 244 and the bottom of the stirring shaft 241 are both provided with conical protrusions 245 for scattering the materials bonded together. In the carbonization process, the pyrolysis oil can bond part of the materials, and the conical protrusions 245 are used for scattering the bonded materials to achieve the effect of fully pyrolyzing the materials.

In one embodiment, the paddles include a first paddle 242 for stirring the material downward and a second paddle 243 for stirring the material upward, the first paddle 242 being located above the second paddle 243. The first paddle 242 and the second paddle 243 are oppositely arranged and are used for fully stirring and dispersing the materials so as to fully pyrolyze the materials.