A furnace rotary thermal cracker

Abstract

The invention discloses a furnace table rotary thermal cracker in the technical field of environmentally friendly solid waste (hereinafter referred to as "solid waste") treatment, comprising a fixed bracket, a rotating furnace table and a toothed turntable bearing, etc. The rotating furnace table surface is made of a material that is resistant to high temperature and corrosion at high temperature, the rotating furnace table can receive solid waste that is subjected to thermal cracking treatment in the thermal cracker, a driving device drives the toothed turntable bearing to rotate, and the rotation of the toothed turntable bearing drives the rotating furnace table to rotate, the rotating furnace table receives the solid waste during the rotation process, the space formed between the hood-type shell and the rotating furnace table is the furnace chamber of the thermal cracker, the solid waste enters the rotating furnace table through a feeding mechanism, the solid waste is arranged and turned over by a material distribution mechanism and a material turning mechanism, so as to ensure that the solid waste is evenly thermally cracked, the thermal cracking effect is good, and at the same time, the transportation and arrangement of the solid waste as well as the high temperature resistance and corrosion resistance are satisfied, the thermal cracking effect of the solid waste is good and the service life is long.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly solid waste treatment, and specifically relates to a furnace rotary thermal cracker. Background Art

[0002] Pyrolysis and thermal cracking processes are a technical solution for harmless, reduced and stabilized treatment of solid waste. At present, the mainstream technologies used in solid waste treatment are incineration, carbonization and thermal cracking. Since incineration and carbonization technologies will produce a large amount of flue gas and secondary pollution, thermal cracking technology, as an excellent and new process, has an increasingly important position in the field of solid waste treatment.

[0003] In the pyrolysis and thermal cracking process, the transportation and uniform arrangement of solid waste inside the thermal cracker (furnace) is an indispensable link for the solid waste to complete the pyrolysis and thermal cracking reaction. Since solid waste is generated in a variety of production and life fields and there are many types, many solid wastes are corrosive or produce corrosive substances under high temperature conditions. Therefore, the mechanism for transporting and arranging solid waste in the thermal cracker needs to be able to complete the transportation and arrangement of solid waste, while also being resistant to high temperatures and corrosion. Conventional solid waste transportation methods include: cage screw conveying, mesh belt conveying, and rotary conveying.

[0004] The use of the above conventional solid waste transportation methods requires that the materials used to make the transportation mechanism must be resistant to high temperatures and corrosion at high temperatures, and must also meet the characteristics of transportation requirements. This results in the selection of materials being restricted to a large extent. It is difficult to find materials that are resistant to high temperatures and corrosion at the same time, and that can meet the requirements of these solid waste transportation methods at high temperatures. Summary of the invention

[0005] The object of the present invention is to provide a furnace table rotary thermal cracker that can simultaneously meet the requirements of solid waste transportation and arrangement as well as high temperature resistance and corrosion resistance under high temperature conditions, to ensure that the thermal cracker can still work normally under high temperature and strong corrosion conditions and complete the treatment of solid waste, so as to solve the problems mentioned in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a furnace table rotary thermal cracker, comprising a fixed bracket, a rotating furnace table is arranged at the upper end of the fixed bracket, a toothed turntable bearing is connected to the lower end of the rotating furnace table and located on the fixed bracket, a driving device is arranged on one side of the toothed turntable bearing, and the driving device is used to drive the toothed turntable bearing, a hood-type shell is arranged at the upper end of the fixed bracket and located on the outer side of the rotating furnace table, and a solid waste channel is arranged through the center of the rotating furnace table , the lower end of the solid waste channel is connected to a discharging cage, the upper end surface of the cover-type shell is provided with a gas waste outlet, the upper end surface of the cover-type shell is also provided with a material distribution mechanism for arranging solid waste, the upper end surface of the cover-type shell is also provided with a turning mechanism for turning the solid waste, the upper end surface of the cover-type shell is also provided with a heater group for heating the solid waste, the upper end surface of the cover-type shell is also provided with a discharging mechanism for exporting the solid waste, and the upper end surface of the cover-type shell is also provided with a feeding mechanism for inputting the solid waste;

[0007] The driving device comprises a reducer, the reducer is fixedly mounted on the fixed bracket, the output end shaft of the reducer is connected with a driving gear, and the driving gear is meshed with the teeth of the toothed turntable bearing;

[0008] The cloth distributing mechanism comprises a first fixing plate, which is fixedly connected to the upper end surface of the cover-type shell, and the lower end of the first fixing plate is symmetrically fixedly connected to one end of a first connecting rod, and the other end of the first connecting rod passes through the cover-type shell and is connected to a cloth distributing rod.

[0009] Preferably, a labyrinth seal is used between the rotary furnace table and the hood-type shell, and a labyrinth seal is used between the rotary furnace table and the solid waste channel.

[0010] Preferably, the material turning mechanism includes a second fixed plate, the second fixed plate is fixedly connected to the upper end surface of the hood-type shell, the lower end of the second fixed plate is symmetrically fixedly connected to one end of a second connecting rod, and the other end of the second connecting rod passes through the hood-type shell and is connected to a material turning rake.

[0011] Preferably, the distance between the turning rake and the rotary furnace table is smaller than the distance between the distribution rod and the rotary furnace table.

[0012] Preferably, the heater group is composed of a plurality of heaters, and the plurality of heaters are evenly installed on the upper end surface of the hood-type shell along a ring shape.

[0013] Preferably, the discharging mechanism comprises a lifting cylinder, a connecting end of the lifting cylinder is connected to one end of a third connecting rod, and the other end of the third connecting rod is connected to a discharging scraper.

[0014] Preferably, the feeding mechanism includes a feeding pipe, which is fixedly passed through the upper wall of the hood-type shell, the upper end of the feeding pipe is connected to a transition pipe, the upper end of the transition pipe is connected to a material pusher, the entrance end of the material pusher is connected to a solid waste buffer tank, and the upper ends of the transition pipe and the solid waste buffer tank are respectively provided with a first valve and a second valve.

[0015] Preferably, water cooling jackets are provided on the outer side walls of the discharging cage and the transition pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: a furnace table rotary thermal cracker, the rotating furnace table surface is made of a material that is resistant to high temperatures and corrosion at high temperatures, the rotating furnace table can receive solid waste that is subjected to thermal cracking in the thermal cracker, a heat-resistant and heat-insulating material layer and a metal tray are sequentially arranged below the high-temperature and corrosion-resistant material, a toothed turntable bearing is connected to the lower end of the rotating furnace table and is located on the fixed bracket, the driving device is used to drive the toothed turntable bearing to drive the toothed turntable bearing to rotate, and the rotation of the toothed turntable bearing drives the rotating furnace table to rotate The rotary furnace table receives solid waste during its rotation, and the space formed between the hood-type shell and the rotary furnace table is a furnace chamber of the thermal cracker. The solid waste enters the rotary furnace table through the feeding mechanism, and is arranged and turned over by the distribution mechanism and the turning mechanism to ensure that the solid waste is evenly thermally cracked and has a good thermal cracking effect. Finally, the ash is discharged from the solid waste channel and the discharge cage through the discharging mechanism, and the gaseous waste is discharged from the gaseous waste outlet. The present invention can simultaneously meet the requirements of solid waste transportation and arrangement as well as high temperature resistance and corrosion resistance, and has a good solid waste thermal cracking effect and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the main structure of the present invention;

[0018] Figure 2 It is a top view of the main structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the rotary furnace of the present invention;

[0020] Figure 4 It is a cross-sectional view of the rotary furnace table of the present invention;

[0021] Figure 5 It is a front view of the material distributing mechanism and the material turning mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the position structure of the lifting cylinder of the present invention;

[0023] Figure 7 This is a front view of the third connecting rod and the discharging scraper of the present invention;

[0024] Figure 8 A top view of the discharging scraper of the present invention;

[0025] Fig. 9 It is the front view of the feeding mechanism of the present invention;

[0026] Fig.10 The present invention adopts a labyrinth seal between the rotary furnace table and the hood-type housing, and a labyrinth seal between the rotary furnace table and the solid waste channel;

[0027] Fig.11 It is a cross-sectional view of the driving device of the present invention.

[0028] In the figure: 1-fixed bracket, 2-rotating furnace table, 3-toothed turntable bearing, 4-driving device, 401-reducer, 402-driving gear, 5-hood-type housing, 6-solid waste channel, 7-gas waste outlet, 8-distributing mechanism, 801-first fixed plate, 802-first connecting rod, 803-distributing rod, 9-turning mechanism, 901-second fixed plate, 902-second connecting rod, 903-turning rake, 101-heater, 11-discharging mechanism, 111-lifting cylinder, 112-third connecting rod, 113-discharging scraper, 12-discharging cage, 13-feeding mechanism, 131-feeding pipe, 132-transition pipe, 133-material propeller, 134-solid waste buffer tank, 135-first valve, 136-second valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The description of directions (up, down, left, right, front, back) is based on the drawings in the specification. Figure 1 The structure shown is described for reference, but the actual use direction of the present invention is not limited thereto.

[0031] Example:

[0032] The present invention provides a technical solution: please refer to Figure 1 and Figure 6 A furnace rotary thermal cracker includes a fixed support 1, which is the main load-bearing component of the furnace rotary thermal cracker and is used to carry the components on it. The fixed support 1 is a metal bracket, and a rotating furnace 2 is arranged on the upper end of the fixed support 1. Figure 3 and Figure 4 , the table top of the rotating furnace table 2 is made of high temperature resistant and corrosion-resistant material at high temperature, the rotating furnace table 2 can receive solid waste subjected to thermal cracking treatment in the thermal cracker, and a heat-resistant insulation material layer and a metal tray are sequentially arranged below the high temperature resistant and corrosion-resistant material, the lower end of the rotating furnace table 2 is located on the fixed bracket 1 and is connected with a toothed turntable bearing 3, and a driving device 4 is arranged on one side of the toothed turntable bearing 3, the driving device 4 is used to drive the toothed turntable bearing 3 to drive the toothed turntable bearing 3 to rotate, and the rotation of the toothed turntable bearing 3 drives the rotating furnace table 2 to rotate, and the rotating furnace table 2 receives solid waste during the rotation process, the upper end of the fixed bracket 1 and the outer side of the rotating furnace table 2 is provided with a hood-type shell 5, the space formed between the hood-type shell 5 and the rotating furnace table 2 is a thermal cracker furnace chamber, a solid waste channel 6 is arranged through the center of the rotating furnace table 2, and the lower end of the solid waste channel 6 is connected with a discharging cage 12, please refer to Figure 1 The upper end surface of the hood-type shell 5 is respectively provided with a gas waste outlet 7, a distribution mechanism 8, a turning mechanism 9, a heater group, a discharging mechanism 11 and a feeding mechanism 13. The solid waste enters the rotary furnace table 2 through the feeding mechanism 13, and is arranged and turned by the distribution mechanism 8 and the turning mechanism 9 to ensure that the solid waste is evenly thermally cracked and has a good thermal cracking effect. Finally, the ash is discharged from the solid waste channel 6 and the discharging cage 12 through the discharging mechanism, and the gas waste is discharged from the gas waste outlet 7. The gas waste outlet 7 can be connected to a subsequent waste gas treatment device.

[0033] See also Fig.11 Specifically, the driving device 4 includes a reducer 401, which is fixedly mounted on the fixed bracket 1. The output end shaft of the reducer 401 is connected to a driving gear 402, which meshes with the teeth of the toothed turntable bearing 3. The reducer 401 works to drive the driving gear 402 to rotate, and the driving gear 402 rotates to drive the toothed turntable bearing 3 to rotate, and the toothed turntable bearing 3 rotates to drive the rotating furnace 2 to rotate, and the rotating furnace 2 receives solid waste during the rotation process.

[0034] See also Fig.10 Specifically, a labyrinth seal is used between the rotary furnace table 2 and the hood-type housing 5, and a labyrinth seal is used between the rotary furnace table 2 and the solid waste channel 6. The sealing medium can be fine sand or oil. When these materials are accumulated to a certain thickness, they can block the flue gas. This sealing method ensures that the gas in the furnace chamber of the thermal cracker will not leak out, and the air outside the furnace will not enter the furnace chamber.

[0035] See also Figure 5Specifically, the material distributing mechanism 8 comprises a first fixing plate 801, the first fixing plate 801 is fixedly connected to the upper end surface of the cover-type housing 5, the lower end of the first fixing plate 801 is symmetrically fixedly connected to one end of the first connecting rod 802, and the other end of the first connecting rod 802 penetrates into the cover-type housing 5 and is connected to a distributing rod 803. The vertical distance between the distributing rod 803 and the table surface of the rotating furnace table 2 carrying the solid waste materials can be adjusted, and after adjustment, it is fixed, so that the vertical distance between the lower end of the distributing rod 803 and the table surface of the rotating furnace table 2 is the maximum material distributing thickness, so that the solid waste materials entering the furnace cavity pass through the lower side of the distributing rod 803 as the rotating furnace table 2 rotates, and the solid waste materials higher than the lower end of the distributing rod 803 will be flattened and scattered to both sides, so that the accumulation height of the solid waste materials on the entire rotating furnace table will not exceed the maximum material distributing thickness.

[0036] See also Figure 5 Specifically, the material turning mechanism 9 includes a second fixing plate 901, the second fixing plate 901 is fixedly connected to the upper end surface of the hood-type housing 5, the lower end of the second fixing plate 901 is symmetrically fixedly connected to one end of a second connecting rod 902, and the other end of the second connecting rod 902 penetrates into the hood-type housing 5 and is connected to a turning rake 903. The material turning mechanism 9 is used in conjunction with the material distribution mechanism 8. In order to enable the solid waste materials to be continuously turned during the thermal cracking process, a plurality of the material turning mechanisms 9 are installed in the thermal cracker cavity, which can turn the solid waste materials on the rotary furnace table 2, so that the solid waste materials can fully absorb heat and fully produce thermal cracking reactions. Adjust the installation height of the material turning rake 903 so that the distance between its lower end and the surface of the rotating furnace table is smaller than the distance between the lower end of the material distributing rod 803 and the rotating furnace table 2. Even if the rake nails of the material turning rake 903 penetrate into the solid waste materials, the bottom of the rake nails maintain a certain distance from the surface of the rotating furnace table. The rake nails of the front and rear adjacent material turning rakes 903 are staggered to ensure that the solid waste materials on the rotating furnace table 2 can be turned back and forth.

[0037] Specifically, the distance between the turning rake 903 and the rotary furnace table 2 is smaller than the distance between the material placing rod 803 and the rotary furnace table 2. The rake nails of the turning rake 903 are made to penetrate into the solid waste materials, and the bottom of the rake nails is kept at a certain distance from the surface of the rotary furnace table. The rake nails of the front and rear adjacent turning rakes 903 are staggered to ensure that the solid waste materials on the rotary furnace table 2 can be turned back and forth.

[0038] See also Figure 2Specifically, the heater group is composed of a plurality of heaters 101, and the heater model may vary depending on the size of the furnace. In addition, the heating energy source may also be an electric heater or a gas heater (for example, a natural gas heater) according to user requirements. A plurality of the heaters 101 are evenly installed on the upper end surface of the hood-type shell 5 along a ring. The heater 101 can also be inserted into the thermal cracker furnace cavity from the side wall of the hood-type shell 5. This arrangement of the heaters ensures that the temperature of the furnace cavity is uniform, thereby ensuring the stability of the thermal cracking reaction of the solid waste.

[0039] See also Figure 6 , Figure 7 and Figure 8 Specifically, the discharging mechanism 11 includes a lifting cylinder 111, and the connection end of the lifting cylinder 111 is connected to one end of a third connecting rod 112, and the other end of the third connecting rod 112 is connected to a discharging scraper 113. When discharging is required, the lifting cylinder 111 works to drive the discharging scraper 113 to move downward and fall on the rotating furnace table 2, and the discharging scraper 113 falls on the rotating furnace table 2 and remains stationary. As the rotating furnace table 2 rotates, the ash product of the solid waste product that has completed the thermal cracking reaction on the furnace table cannot continue to rotate with the furnace table due to being blocked by the discharging scraper 113, and can only move along the guide direction of the discharging scraper 113 to the solid waste channel 6 located at the center of the rotating furnace table 2, and the ash falls from the solid waste channel 6 and is finally transported out through the discharging cage 12.

[0040] See also Fig. 9 Specifically, the feeding mechanism 13 includes a feeding pipe 131, which is fixedly passed through the upper wall of the hood-type shell 5, and the upper end of the feeding pipe 131 is connected to a transition pipe 132, and the upper end of the transition pipe 132 is connected to a material pusher 133, and the entrance end of the material pusher 133 is connected to a solid waste buffer tank 134, and the upper ends of the transition pipe 132 and the solid waste buffer tank 134 are respectively provided with a first valve 135 and a second valve 136. When feeding starts, the first valve 135 opens, and the solid waste material enters the solid waste buffer tank 134 through the opened first valve 135. The solid waste material that enters first will enter the material pusher 133 and wait to be pushed forward. When the solid waste buffer tank 134 is full of solid waste material, the first valve 135 is closed. At this time, the second valve 136 is opened, and the material pusher 133 is started to send the solid waste material in the solid waste buffer tank 134 into the thermal cracker through the transition pipe 132 and the feed pipe 131.

[0041] The shape of the solid waste buffer tank 134 can be designed into different shapes according to the characteristics of the solid waste materials, such as a bucket shape, which is not specifically limited here.

[0042] When conveying materials, the action modes and sequences of the second valve 136, the material pusher 133 and the first valve 135 can be rearranged and modified according to the characteristics of the solid waste materials and the actual conditions at the site of use of the thermal cracker.

[0043] Specifically, water-cooling jackets are provided on the outer walls of the discharging cage 12 and the transition pipe 132. The provision of the cooling water jacket on the discharging cage 12 reduces the temperature of the discharging ash. The water-cooling jacket on the transition pipe prevents and cuts off the heat in the furnace from coming out along the transition pipe 132 and entering the feeding mechanism 13, causing the temperature of the feeding mechanism 13 to rise and affecting its function; at the same time, the heat coming out of the furnace may also cause some solid waste materials to be heated before entering the furnace and produce chemical reactions outside the thermal cracker or change the material form (for example: become soft and sticky after being heated, causing it to stick to the feeding mechanism 13), which may cause the chemical reactants to leak out and cause harm to the surrounding environment or affect the solid waste materials whose material form has been changed and cannot enter the thermal cracker normally, causing the thermal cracker to fail to work normally.

[0044] Working principle: When the feeding starts, the first valve 135 is opened, and the solid waste material enters the solid waste buffer tank 134 through the opened first valve 135. The solid waste material that enters first will enter the material pusher 133 and wait to be pushed forward. When the solid waste buffer tank 134 is full of solid waste material, the first valve 135 is closed. At this time, the second valve 136 is opened, and the material pusher 133 is started to send the solid waste material in the solid waste buffer tank 134 into the thermal cracker through the transition pipe 132 and the feed pipe 131. The multiple heaters 101 are evenly installed on the upper end surface of the hood shell 5 along a ring. The heater 101 works to heat the furnace cavity, and the reducer 401 works to drive the driving gear 402 to rotate. The driving gear 402 rotates to drive the toothed turntable bearing 3 to rotate. The toothed turntable bearing 3 rotates to drive the rotating furnace table 2 to rotate. The rotating furnace table 2 receives solid waste during the rotation process. The vertical distance between the distribution rod 803 and the table of the rotating furnace table 2 carrying the solid waste is adjusted and fixed, so that the vertical distance from the lower end of the distribution rod 803 to the table of the rotating furnace table 2 is the maximum distribution thickness, so that the solid waste entering the furnace cavity rotates with the rotating furnace table 2. The material turning rake 903 is used in conjunction with the material distributing mechanism 8 to adjust the installation height of the material turning rake 903 so that the distance between its lower end and the surface of the rotating furnace table is smaller than the distance between the lower end of the material distributing rod 803 and the rotating furnace table 2. Even if the rake nails of the material turning rake 903 penetrate into the solid waste materials, and the bottom of the rake nails maintain a certain distance from the surface of the rotating furnace table, the rake nails of the material turning rake 903 adjacent to each other are staggered to ensure that the material The solid waste material on the rotary furnace table 2 can be turned back and forth left and right. When it is necessary to discharge the material, the lifting cylinder 111 works to drive the discharge scraper 113 to move downward and fall on the rotating furnace table 2. The discharge scraper 113 falls on the rotating furnace table 2 and remains stationary. As the rotating furnace table 2 rotates, the ash of the solid waste product that has completed the thermal cracking reaction on the furnace table is blocked by the discharge scraper 113 and cannot continue to rotate with the furnace table, but can only move along the guide direction of the discharge scraper 113 to the solid waste channel 6 located at the center of the rotating furnace table 2. The ash falls from the solid waste channel 6 and is finally transported out through the discharge cage 12.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace rotary thermal cracker, comprising a fixed support (1), characterized in that: A rotating furnace table (2) is arranged at the upper end of the fixed support (1), a toothed turntable bearing (3) is connected to the lower end of the rotating furnace table (2) and is located on the fixed support (1), a driving device (4) is arranged on one side of the toothed turntable bearing (3), and the driving device (4) is used to drive the toothed turntable bearing (3), a cover-type housing (5) is arranged at the upper end of the fixed support (1) and is located on the outer side of the rotating furnace table (2), a solid waste channel (6) is arranged through the center of the rotating furnace table (2), and a discharge screw is connected to the lower end of the solid waste channel (6). The upper end surface of the hood-type shell (5) is provided with a gas waste outlet (7), the upper end surface of the hood-type shell (5) is also provided with a material distribution mechanism (8) for arranging solid waste, the upper end surface of the hood-type shell (5) is also provided with a material turning mechanism (9) for turning the solid waste, the upper end surface of the hood-type shell (5) is also provided with a heater group for heating the solid waste, the upper end surface of the hood-type shell (5) is also provided with a material discharge mechanism (11) for guiding the solid waste out, and the upper end surface of the hood-type shell (5) is also provided with a material feeding mechanism (13) for inputting the solid waste; The driving device (4) comprises a reducer (401), the reducer (401) is fixedly mounted on the fixed bracket (1), the output end shaft of the reducer (401) is connected to a driving gear (402), and the driving gear (402) is meshed with the teeth of the toothed turntable bearing (3); The material dispensing mechanism (8) comprises a first fixing plate (801), the first fixing plate (801) being fixedly connected to the upper end surface of the cover-type housing (5), the lower end of the first fixing plate (801) being symmetrically fixedly connected to one end of a first connecting rod (802), the other end of the first connecting rod (802) passing through the cover-type housing (5) and being connected to a material dispensing rod (803).

2. The hearth rotary thermal cracker according to claim 1, characterized in that: A labyrinth seal is used between the rotary furnace table (2) and the cover-type housing (5), and a labyrinth seal is used between the rotary furnace table (2) and the solid waste channel (6).

3. The hearth rotary thermal cracker according to claim 1, characterized in that: The material turning mechanism (9) comprises a second fixed plate (901), the second fixed plate (901) is fixedly connected to the upper end surface of the cover-type shell (5), the lower end of the second fixed plate (901) is symmetrically fixedly connected to one end of a second connecting rod (902), and the other end of the second connecting rod (902) penetrates into the cover-type shell (5) and is connected to a material turning rake (903).

4. The hearth rotary thermal cracker according to claim 3, characterized in that: The distance between the material turning rake (903) and the rotary furnace table (2) is smaller than the distance between the material distribution rod (803) and the rotary furnace table (2).

5. The hearth rotary thermal cracker according to claim 1, characterized in that: The heater group is composed of a plurality of heaters (101), and the plurality of heaters (101) are evenly installed in a ring shape on the upper end surface of the hood-type housing (5).

6. The hearth rotary thermal cracker according to claim 1, characterized in that: The discharging mechanism (11) comprises a lifting cylinder (111), the connection end of the lifting cylinder (111) is connected to one end of a third connecting rod (112), and the other end of the third connecting rod (112) is connected to a discharging scraper (113).

7. The furnace rotary thermal cracker according to claim 1, characterized in that: The feeding mechanism (13) comprises a feeding pipe (131), wherein the feeding pipe (131) is fixedly passed through the upper wall of the hood-type shell (5), the upper end of the feeding pipe (131) is connected to a transition pipe (132), the upper end of the transition pipe (132) is connected to a material pusher (133), the entrance end of the material pusher (133) is connected to a solid waste buffer tank (134), and the upper ends of the transition pipe (132) and the solid waste buffer tank (134) are respectively provided with a first valve (135) and a second valve (136).

8. The hearth rotary thermal cracker according to claim 7, characterized in that: Water cooling jackets are provided on the outer side walls of the discharging cage (12) and the transition pipe (132).

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