Carbonization chamber rotating purging device and carbonization method

Abstract

This invention belongs to the field of document destruction technology and discloses a carbonization chamber rotary purging device and carbonization method. The carbonization chamber rotary purging device includes a carbonization tank, a rotating mechanism, and an ignition assembly; wherein the carbonization tank has a carbonization cavity inside and a smoke exhaust port at the top; the rotating mechanism includes a tray, an air inlet pipe, and a drive assembly, the first end of the air inlet pipe extends vertically into the carbonization cavity, the top of the tray is used to support the paper document to be carbonized, the tray includes a body and multiple support pipes arranged circumferentially, the body is located on the outer periphery of the first end and the body connects the air inlet pipe and the multiple support pipes, the bottom of the multiple support pipes is provided with air blowing holes, airflow can flow in through the air inlet pipe and blow out through the air blowing holes, the drive assembly is located at the second end of the air inlet pipe and can drive the tray to rotate, so as to rotate and purge the carbonization ash at the bottom of the carbonization cavity, so that the carbonization ash is discharged from the smoke exhaust port; the ignition assembly is located on the side wall of the carbonization tank and is used to ignite the paper document to be carbonized.

Description

Technical Field

[0001] This invention relates to the field of document destruction technology, and in particular to a carbonization chamber rotary purging device and carbonization method. Background Technology

[0002] To prevent the leakage of confidential information, classified documents can be completely destroyed by burning paper in an oxygen-deficient environment (carbonization). Current technology involves adding a simple stirring structure to the carbonization furnace, causing the paper to rotate as a whole during carbonization, thus increasing processing speed to some extent. However, this method typically uses a fixed method of blowing air into the carbonization furnace to raise and expel the ash produced during carbonization. This method cannot cover the entire bottom area of ​​the carbonization furnace, leading to ash accumulation in certain corners, affecting continuous operation and reducing the effective carbonization quantity of paper per unit time.

[0003] Therefore, there is an urgent need for a carbonization chamber rotary purging device and carbonization method to solve the problems in the existing technology. Summary of the Invention

[0004] One objective of this invention is to provide a rotary purging device for a carbonization chamber, which can purge the carbonization ash at the bottom of the carbonization chamber without dead angles while ensuring the carbonization speed, thereby enabling the ash to be discharged quickly, avoiding the accumulation of ash in local corners, and ensuring the continuity of operation.

[0005] To achieve this objective, the present invention adopts the following technical solution: A rotary purging device for a carbonization chamber, characterized in that it comprises: The carbonization canister has a carbonization chamber inside and a smoke vent at the top. The rotating mechanism includes a tray, an air inlet pipe, and a drive assembly. The first end of the air inlet pipe extends vertically into the carbonization chamber. The top of the tray is used to support the paper document to be carbonized. The tray includes a body and a plurality of support pipes arranged circumferentially. The body is located on the outer periphery of the first end and connects the air inlet pipe with the plurality of support pipes. The bottom of the plurality of support pipes is provided with air blowing holes, allowing airflow to flow in through the air inlet pipe and out through the air blowing holes. The drive assembly is located at the second end of the air inlet pipe and can drive the tray to rotate, thereby rotating and blowing away the carbonization ash at the bottom of the carbonization chamber, so that the carbonization ash is discharged from the exhaust port. An ignition assembly, disposed on the side wall of the carbonization canister, is used to ignite the paper document to be carbonized.

[0006] Preferably, the multiple support tubes are arranged in a cross or radial pattern.

[0007] Preferably, two support tubes on the same straight line are grouped together, and at least two support tubes in a group are provided with air holes at the end away from the main body, and at least two support tubes in a group are provided with air holes on the tube body; the axis of the air hole at the end away from the main body forms an angle α with the horizontal plane, and the axis of the air hole on the tube body forms an angle β with the horizontal plane, where both α and β are 45°.

[0008] Preferably, with the horizontal plane as a reference and the center of the body as the center, the air holes on the two support tubes in the same group are centrally symmetrical or offset from the center.

[0009] Preferably, two adjacent support tubes are connected by multiple support rods, and the support rods are spaced apart.

[0010] Preferably, the ignition assembly includes multiple ignition elements, and the multiple ignition elements are evenly distributed along the circumference of the carbonization can.

[0011] Preferably, all the ignition elements are at the same height or are arranged in a staggered manner in the vertical direction, and are all 0-25cm higher than the top of the tray.

[0012] Preferably, the drive shaft of the drive assembly is located inside the air inlet pipe, and the air inlet of the air inlet pipe is located at the end away from the carbonization tank.

[0013] Preferably, the carbonization tank has an insulation layer.

[0014] Another object of the present invention is to provide a carbonization method that can increase the effective carbonization quantity of paper per unit time.

[0015] To achieve this objective, the present invention adopts the following technical solution: A carbonization method, the carbonization method being based on the rotary purging device of the carbonization chamber, the carbonization method comprising the following steps: S100. Start the drive assembly to rotate the tray in the vertical direction; S200: Air is introduced through the air inlet pipe, and the airflow escapes through the air outlet; S300: Activate the ignition assembly to ignite the paper document to be carbonized on the tray; S400. During the rotation of the tray, each of the air holes blows through the bottom of the carbonization chamber to raise the carbonization ash at the bottom of the chamber, so that the carbonization ash is discharged from the exhaust port. S500. After all the paper documents to be carbonized are carbonized, increase the air intake flow rate of the air inlet pipe to discharge some of the carbonization ash remaining in the carbonization chamber and to cool the carbonization chamber.

[0016] The beneficial effects of this invention are: This invention discloses a carbonization chamber rotary purging device. The carbonization chamber rotary purging device includes a carbonization tank, a rotating mechanism, and an ignition assembly. The carbonization tank has a carbonization cavity inside and a smoke exhaust port at the top. The rotating mechanism includes a tray, an air inlet pipe, and a drive assembly. The first end of the air inlet pipe extends vertically into the carbonization cavity. The top of the tray supports the paper document to be carbonized. The tray includes a body and multiple support pipes arranged circumferentially. The body is located on the outer periphery of the first end and connects the air inlet pipe to the multiple support pipes. Air blowing holes are provided at the bottom of the multiple support pipes, allowing airflow to flow in through the air inlet pipe and out through the air blowing holes. The drive assembly is located at the second end of the air inlet pipe and drives the tray to rotate, thereby purging the carbonization ash at the bottom of the carbonization cavity and discharging the carbonization ash from the smoke exhaust port. The ignition assembly is located on the side wall of the carbonization tank and is used to ignite the paper document to be carbonized.

[0017] In this device, the tray can support the paper documents to be carbonized within the carbonization chamber, and the drive component can rotate the tray to ensure the burning speed of the paper. At the same time, the air inlet pipe can introduce air into multiple support pipes, and the air can be blown out from the air blowing holes of different support pipes. This gas can not only accelerate combustion, but also, as the support pipes rotate, the escaping airflow can thoroughly and completely sweep the bottom of the carbonization chamber without dead angles (the support pipes integrate support and rotational air blowing), so that the ash produced by carbonization can be quickly raised and discharged from the exhaust port, avoiding the accumulation of carbonization ash in local corners and ensuring the continuity of the carbonization operation.

[0018] The present invention also provides a carbonization method based on the above-mentioned carbonization chamber rotary blowing device, which can increase the effective carbonization quantity of paper per unit time. Attached Figure Description

[0019] Figure 1 This is an isometric schematic diagram of the carbonization chamber rotary purging device according to an embodiment of the present invention; Figure 2 This is a front view schematic diagram of the carbonization chamber rotary purging device described in this invention; Figure 3 yes Figure 2 A cross-sectional view along the AA direction; Figure 4 yes Figure 2 A cross-sectional view along the BB direction; Figure 5 This is a side view of the rotating mechanism described in this invention; Figure 6 This is a bottom view of the tray described in this invention; Figure 7 This is an axial side view of the tray described in this invention; Figure 8 This is a schematic diagram of the air outlet of the tray described in this invention; Figure 9 This is a structural schematic diagram of the air outlet direction of the tray described in this invention relative to the horizontal plane; Figure 10 This is a logic diagram of the carbonization method described in this invention.

[0020] In the picture: 10. Carbonization tank; 11. Carbonization chamber; 12. Smoke vent; 13. Paper feeding port; 14. Insulation layer; 20. Rotating mechanism; 21. Tray; 211. Body; 212. Support tube; 213. Air blowing hole; 214. Support rod; 22. Air inlet pipe; 221. Air inlet; 23. Motor; 24. Reducer; 25. Sealing cap; 26. Fixing plate; 30. Ignition components. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0023] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0024] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection via an intermediate medium; or the internal communication of two components or the interaction between two components. As examples, a direct connection refers to two parts or components being connected together without the need for an intermediate medium, while an indirect connection refers to two parts or components each being connected to at least one intermediate medium, with the connection achieved through the intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0025] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0026] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0027] In this invention, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientations or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, in the context, it should be understood that when an element is mentioned as being "upper" or "lower" than another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as "upper side," "lower side," "left side," "right side," "front side," and "rear side" not only represent positive orientation but can also be understood as lateral orientation. For example, "above," "on top of," "upper side of," and "above" the first feature "above" or "on the second feature" includes the first feature being directly above, to the upper left, to the upper right, to the upper front, and to the upper rear of the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The terms "below," "under," "below," and "below" for "first feature" and "second feature" include situations where the first feature is directly below, to the lower left, to the lower right, in front of, or behind the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0028] To prevent the leakage of confidential information, classified documents need to be destroyed by burning paper in an oxygen-deficient environment (carbonization). Existing technology uses a simple stirring structure added to the carbonization furnace, causing the paper to rotate as a whole during carbonization, thus increasing processing speed to some extent. However, this method typically uses a fixed method of blowing air into the carbonization furnace to raise and discharge the ash produced during carbonization. This method cannot cover the entire bottom area of ​​the carbonization furnace, and ash tends to accumulate in local corners, affecting continuous operation and reducing the effective carbonization quantity of paper per unit time. To solve the problems in the existing technology, this invention provides a rotating blowing device for the carbonization chamber. The technical solution of this invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 9As shown, the carbonization chamber rotary purging device includes a carbonization tank 10, a rotating mechanism 20, and an ignition assembly; the carbonization tank 10 has a carbonization chamber 11 inside and a smoke exhaust port 12 at the top; the rotating mechanism 20 includes a tray 21, an air inlet pipe 22, and a drive assembly, the first end of the air inlet pipe 22 extends vertically into the carbonization chamber 11, the top of the tray 21 is used to support the paper document to be carbonized, the tray 21 includes a body 211 and a plurality of support pipes 212 arranged circumferentially, the body 211 is provided with At the outer periphery of the first end, the main body 211 is connected to the air inlet pipe 22 and multiple support pipes 212. The bottom of the multiple support pipes 212 is provided with air blowing holes 213, and the airflow can flow in through the air inlet pipe 22 and blow out through the air blowing holes 213. The drive component is provided at the second end of the air inlet pipe 22 and can drive the tray 21 to rotate, so as to rotate and blow the carbonization ash at the bottom of the carbonization chamber 11, so that the carbonization ash is discharged from the exhaust port 12. The ignition component is provided on the side wall of the carbonization tank 10 and is used to ignite the paper document to be carbonized.

[0030] In this device, the tray 21 can support the paper document to be carbonized (hereinafter referred to as paper) in the carbonization chamber 11, and the drive component can drive the tray 21 to rotate, thereby ensuring the burning speed of the paper; at the same time, the air inlet pipe 22 can introduce air into multiple support pipes 212, and the air can be blown out from the air blowing holes 213 of different support pipes 212. This gas can not only accelerate the combustion, but also, as the support pipes 212 rotate, the escaping airflow can thoroughly and without dead angles clean the bottom of the carbonization chamber 11 (the support pipes 212 integrate support and rotational air blowing), so that the ash produced by carbonization can be quickly raised and discharged from the exhaust port 12, avoiding the accumulation of carbonization ash in local corners and ensuring the continuity of the carbonization operation.

[0031] It should be noted that, as Figures 1-4 As shown, the ignition assembly includes multiple ignition elements 30, which are evenly distributed around the circumference of the carbonization tank 10. This arrangement allows for simultaneous heating of the paper on the tray 21 from multiple angles, ensuring uniform heat distribution during ignition, improving heat conduction efficiency, guaranteeing sufficient carbonization of the bottom paper, and increasing processing speed.

[0032] In addition, the top of the carbonization tank 10 is equipped with a paper feeding port 13, which allows operators to directly feed paper into the carbonization chamber 11 without opening the top cover of the carbonization tank 10, thus ensuring the convenience and safety of operation.

[0033] Furthermore, the ignition elements 30 are at the same height or staggered vertically, and are all 0-25cm higher than the top of the tray 21. In this structure, multiple ignition elements 30 are slightly higher than the tray 21 (generally 5-15cm higher, preferably 10cm). The high-temperature airflow generated by the ignition elements 30 can directly ignite the paper at the bottom of the tray 21. Since the ignition height of the multiple ignition elements 30 is the same or staggered in the vertical direction, the heat generated during combustion rises naturally with the airflow, gradually heating the upper layer of paper and forming a bottom-up heat transfer path, ensuring the high efficiency of the carbonization process. Some of the ash during combustion is discharged directly from the exhaust port, while the ash at the bottom falls to the bottom of the carbonization chamber 11 through the gaps between multiple support tubes 212. As the tray 21 rotates, the continuously escaping airflow lifts and discharges the remaining ash.

[0034] In addition, such as Figures 1-5 As shown, the drive assembly includes a motor 23, a reducer 24, a sealing cap 25, and a fixing plate 26. The motor 23 is connected to the reducer 24, and the output end of the reducer 24 is connected to the drive shaft. The drive shaft is located inside the air inlet pipe 22, and the other end of the drive shaft is connected to the center of the tray 21. The air inlet 221 of the air inlet pipe 22 is located at the end away from the carbonization tank 10. The fixing plate 26 is located at the end of the air inlet pipe 22 extending out of the carbonization chamber 11, used to fix the air inlet pipe 22. The sealing cap 25 is located at the joint between the reducer 24 and the drive shaft, thereby sealing the connection and preventing air leakage. In this structure, the supplied airflow flows through the air inlet pipe 22 before escaping from the air outlet 213. This forces cooling of the drive shaft, preventing high temperatures from damaging the drive system after prolonged operation. Simultaneously, the airflow itself is preheated, which helps increase the heating rate within the carbonization chamber 11 after entering, achieving energy recovery. Furthermore, the speed of the reducer 24 driving the tray 21 is 2-30 seconds per revolution, preferably 15 seconds per revolution.

[0035] The carbonization process in existing technologies suffers from significant heat loss. To address this issue, the carbonization tank 10 incorporates an insulation layer 14. This insulation layer 14 reduces heat loss during the carbonization process, thereby lowering energy consumption. The insulation layer 14 is made of ceramic fiber material.

[0036] To ensure a good purging effect, such as Figures 5-9 As shown, multiple support tubes 212 are arranged in a cross or radial pattern. This structure can evenly distribute multiple support tubes 212, which not only improves the stability of supporting the paper, but also improves the uniformity of the air blowing holes 213, thereby ensuring a good blowing effect.

[0037] It should be noted here that, as Figures 5-9As shown, adjacent support tubes 212 are connected by multiple support rods 214, which are spaced apart. By setting multiple support rods 214, the compressive strength and load-bearing capacity of the tray 21 are significantly improved; at the same time, the contact area with the paper is also increased, thereby ensuring a good support effect and preventing the paper from falling to the bottom of the cavity through the gaps in the support tubes 212 as soon as it starts to burn locally, thus ensuring a good oxygen-deficient combustion effect.

[0038] Furthermore, such as Figures 5-9 As shown, two support pipes 212 aligned in a straight line form a group. At least two support pipes 212 within a group have air holes 213 at their ends away from the main body 211, and air holes 213 are also provided on the pipe body. The axis of the air hole 213 at the end away from the main body 211 forms an angle α with the horizontal plane, while the axis of the air hole 213 on the pipe body forms an angle β with the horizontal plane, both α and β being 45°. In this structure, the air holes 213 are oriented obliquely downwards at a 45° angle with the horizontal plane. Therefore, when the drive shaft rotates the tray 21, the airflow escaping from the air holes 213 can obliquely impact the carbonized ash at the bottom of the carbonization chamber 11, thereby improving the efficiency and convenience of oxygen dust removal and ensuring effective cleaning of the chamber bottom. Furthermore, the positions of the air holes 213 on each set of support tubes 212 are different. Some air holes 213 are located at the end of the support tube 212, while the rest are located in the tube body of the support tube 212. This ensures that the bottom of the carbonization chamber 11 can be swept without dead angles during rotation, thus ensuring a good sweeping effect.

[0039] In addition, such as Figures 5-9 As shown, with the horizontal plane as the reference and the center of the body 211 as the center, the air holes 213 on the two support tubes 212 in the same group are centrally symmetrical or staggered around the center. This structure ensures that when rotating, the air holes 213 on each support tube 212 can blow the bottom of the carbonization chamber 11 at the same angle following the direction of rotation, ensuring that the carbonization ash at the bottom of the chamber can be fully lifted, thereby enabling rapid smoke exhaust and ensuring the subsequent carbonization effect.

[0040] In addition, it should be noted that, such as Figures 5-9As shown, multiple air holes 213 are spaced apart along the axial direction of the support pipe 212 on the pipe body, and the air holes 213 on the same support pipe 212 all face the same direction. Since the axial length of the support pipe 212 is slightly smaller than the inner diameter of the carbonization tank 10, the area covered below the support pipe 212 is large. This arrangement can improve the purging effect by increasing the number of air holes 213 on a single support pipe 212, so that the air holes 213 are distributed throughout the bottom of the cavity. Combined with the air holes 213 at the ends of other sets of support pipes 212, the air holes 213 at multiple positions work together to achieve a purging effect without dead angles, which greatly improves the discharge speed of ash and avoids the accumulation of ash at local angles.

[0041] Example 1 There are four support tubes 212, each 1 inch long, made of stainless steel. The four support tubes 212 are arranged in a cross shape, connected by multiple support rods 214, and form a supporting surface on the top to support the paper. The first group of support tubes 212 has air holes 213 only at the ends; the second group of support tubes 212 has multiple air holes 213 arranged axially on the tube body. In the second group, multiple air holes 213 are arranged axially on the same support tube 212, and the two support tubes 212 are centrally symmetrically distributed (one support tube 212 can be aligned with the other support tube 212 in the second group by rotating 180° clockwise or counterclockwise in the horizontal plane). The diameter of the multiple air holes 213 is 10mm, and the air outlet direction is inclined downward at a 45° angle to the horizontal plane.

[0042] The motor 23 has a power of 200W, and the reducer 24 has a reduction ratio of 1:30. The motor 23 drives the reducer 24 to operate, and the reducer 24 drives the tray 21 to rotate at a speed of 15 seconds per revolution via the drive shaft. Compressed air at a pressure of 0.2MPa is introduced into the air inlet pipe 22 through the air inlet 221. When the airflow passes through the air duct, it first cools the drive shaft, and then it is distributed to each support pipe 212 and escapes from the air blowing hole 213. The ignition assembly includes two long-life modular igniters, which are 10cm higher than the tray 21.

[0043] In this embodiment, after multiple rounds of testing, the start-up time for processing 5kg of paper was reduced from 50 minutes to 12 minutes, the carbonized paper residue rate was <1%, and the drive shaft temperature was below 150°C after 10 hours of continuous operation.

[0044] Example 2 There are six support tubes 212, each 1 inch long, made of stainless steel, and arranged radially. Air is blown through multiple support rods 214, forming a supporting surface on the top to support the paper. Alternatively, two sets of support tubes 212 can be used with air holes 213 at their ends, or two sets of support tubes 212 can be used with air holes 213 on the tube body. The air holes 213 of the two support tubes 212 within the same set must be centrally symmetrically distributed in the horizontal plane. The diameter of all air holes 213 is 8mm, and the air outlet direction is inclined downwards at a 45° angle to the horizontal plane.

[0045] The motor 23 has a power of 200W, and the reducer 24 has a reduction ratio of 1:30. The motor 23 drives the reducer 24 to operate, and the reducer 24 drives the tray 21 to rotate at a speed of 20 seconds / revolution through the drive shaft. Compressed air at a pressure of 0.2MPa is introduced into the air inlet pipe 22 through the air inlet 221. When the airflow passes through the air duct, it first cools the drive shaft, and then it is distributed to each support pipe 212 and escapes from the air blowing hole 213. The ignition element 30 is 10cm higher than the tray 21, and there are 3 ignition elements 30.

[0046] In this embodiment, after multiple rounds of testing, the technical effect is similar to that of Embodiment 1.

[0047] The present invention also provides a carbonization method based on the above-mentioned carbonization chamber rotary purging device, the carbonization method comprising the following steps: S100, Start the drive assembly to rotate the tray 21 in the vertical direction; S200, air is introduced through the air inlet pipe 22, and the airflow escapes through the air outlet 213; S300, activate the ignition assembly to ignite the paper document to be carbonized on tray 21; S400, during the rotation of tray 21, each air blowing hole 213 blows the bottom of carbonization chamber 11 to raise the carbonization ash at the bottom of the chamber and discharge the carbonization ash from the exhaust port 12. S500 After all the carbonized paper documents have been carbonized, increase the air intake flow of the air inlet pipe 22 to discharge the remaining carbonized ash in the carbonization chamber 11 and cool down the carbonization chamber 11.

[0048] Based on the above-mentioned device, the support tube 212 integrates the functions of blowing and supporting, and the blowing hole 213 rotates in a staggered manner to blow air. At the same time, the airflow can cool the drive shaft. Therefore, while achieving the functions of blowing without dead angles, efficient heating and cooling of key components, this method also increases the effective carbonization amount of paper per unit time.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A rotary purging device for a carbonization chamber, characterized in that, include: A carbonization tank (10) has a carbonization chamber (11) inside and a smoke vent (12) on top. The rotating mechanism (20) includes a tray (21), an air inlet pipe (22), and a drive assembly. The first end of the air inlet pipe (22) extends vertically into the carbonization chamber (11). The top of the tray (21) is used to support the paper document to be carbonized. The tray (21) includes a body (211) and a plurality of support pipes (212) arranged circumferentially. The body (211) is located on the outer periphery of the first end and connects the air inlet pipe (22) with the plurality of support pipes (212). The bottom of the plurality of support pipes (212) is provided with an air blowing hole (213). Airflow can flow in through the air inlet pipe (22) and blow out through the air blowing hole (213). The drive assembly is located at the second end of the air inlet pipe (22) and can drive the tray (21) to rotate, so as to rotate and blow away the carbonization ash at the bottom of the carbonization chamber (11) and discharge the carbonization ash from the exhaust port (12). An ignition assembly is disposed on the side wall of the carbonization canister (10) for igniting the paper document to be carbonized.

2. The carbonization chamber rotary purging device according to claim 1, characterized in that, The multiple support tubes (212) are arranged in a cross or radial pattern.

3. The carbonization chamber rotary purging device according to claim 2, characterized in that, Two support tubes (212) that are on the same straight line are a group. At least two support tubes (212) in a group are provided with air holes (213) at the end away from the body (211). At least two support tubes (212) in a group are provided with air holes (213) on the tube body. The axis of the air hole (213) located at the end away from the body (211) forms an angle α with the horizontal plane, and the axis of the air hole (213) located on the tube body forms an angle β with the horizontal plane. Both α and β are 45°.

4. The carbonization chamber rotary purging device according to claim 3, characterized in that, With the horizontal plane as a reference and the center of the body (211) as the center, the air holes (213) on the two support tubes (212) in the same group are centrally symmetrical or staggered around the center.

5. The carbonization chamber rotary purging device according to claim 2, characterized in that, Two adjacent support tubes (212) are connected by a plurality of support rods (214), and the support rods (214) are spaced apart.

6. The carbonization chamber rotary purging device according to claim 1, characterized in that, The ignition assembly includes a plurality of ignition elements (30), and the plurality of ignition elements (30) are evenly distributed along the circumference of the carbonization canister (10).

7. The carbonization chamber rotary purging device according to claim 6, characterized in that, The ignition components (30) are all at the same height or are arranged in a staggered manner in the vertical direction, and are all 0-25cm higher than the top of the tray (21).

8. The carbonization chamber rotary purging device according to claim 1, characterized in that, The drive shaft of the drive assembly is located inside the air inlet pipe (22), and the air inlet (221) of the air inlet pipe (22) is located at one end away from the carbonization tank (10).

9. The carbonization chamber rotary purging device according to claim 1, characterized in that, The carbonization tank (10) has an insulation layer (13).

10. A carbonization method, characterized in that, The carbonization method is based on the carbonization chamber rotary purging device according to any one of claims 1-9, and the carbonization method includes the following steps: S100, Start the drive assembly to rotate the tray (21) in the vertical direction; S200, Air is introduced through the air inlet pipe (22), and the airflow escapes through the air blowing hole (213); S300, Activate the ignition assembly to ignite the paper document to be carbonized on the tray (21); S400. During the rotation of the tray (21), each of the air holes (213) blows the bottom of the carbonization chamber (11) to lift the carbonization ash at the bottom of the chamber and discharge the carbonization ash from the exhaust port (12). S500 After all the paper documents to be carbonized are carbonized, increase the air intake flow of the air inlet pipe (22) to discharge the carbonization ash remaining in the carbonization chamber (11) and cool down the carbonization chamber (11).

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