A microwave cracking apparatus

Abstract

The utility model relates to a kind of microwave cracking equipment, including water load and circulator, the water load is communicated with magnetron by the 2nd waveguide tube, water load is communicated with reactor by the 1st waveguide tube, cylindrical carousel is equipped in reactor cavity, reactor cover is equipped in reactor top, motor is equipped below reactor, the driving shaft of motor is fixed in reactor cover bottom in proper order through reactor bottom surface shell and carousel center, multiple cylindrical cavities are uniformly set on carousel, discharge pipe is equipped on reactor cover, discharge pipe is covered with pipe cap, cylindrical cavity is opened in horizontal direction on the side far from circle center, the gap between opening and reactor inner wall is less than 0.5mm.The utility model's motor driving shaft rotates, makes it let carousel and reactor cover synchronous rotation.This can place sample in each circular cavity, the utility model can continuously work, improve work efficiency, reduce frequently switching equipment.

Description

Technical Field

[0001] This utility model relates to the field of microwave equipment technology, and more particularly to a microwave pyrolysis device. Background Technology

[0002] Microwave pyrolysis equipment is an electronic device that uses microwaves to heat polymer materials, causing them to undergo a pyrolysis reaction and promoting material degradation. Its core components typically include a magnetron, power supply, control system, cooling system, circulator, water load, waveguide, and resonant cavity. The magnetron converts electrical energy into microwave energy; the power supply provides stable power; the control system adjusts parameters such as microwave output power and runtime; the cooling system uses air or water cooling to prevent damage to the microwave source and core components due to high temperatures; the circulator transmits high-frequency signal energy unidirectionally; the water load avoids the impact of electromagnetic wave reflection on the system; the waveguide transmits ultra-high-frequency electromagnetic waves; and the resonant cavity is a metal cavity within which a high-frequency electromagnetic field continuously oscillates, serving as the site for the material pyrolysis reaction. Microwave pyrolysis equipment utilizes the penetrating power and thermal effect of microwaves to achieve rapid and uniform heating of materials, with high energy conversion efficiency and easy precise control, making it an effective device for efficient material pyrolysis.

[0003] In existing technologies, the microwaves entering the resonant cavity of some microwave pyrolysis devices need to be turned off after irradiating the material, and then restarted for the next microwave heating cycle after the material is replaced. This leads to a decrease in microwave energy utilization. In addition, frequent shutdowns of the microwave pyrolysis device also increase the risk of damage to the device. Therefore, a device capable of continuously operating the pyrolysis reaction of multiple materials is proposed to solve the above problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a microwave pyrolysis device. The purpose is to solve the problem that existing reactors cannot operate continuously and require power off and sample repositioning after each pyrolysis cycle, thereby reducing the frequency of switching on and off.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A microwave pyrolysis device includes a water load and a circulator. The water load is connected to a magnetron via a second waveguide and to a reactor via a first waveguide. A cylindrical turntable is provided inside the reactor shell. A reactor cover is provided on the top of the reactor. A motor is provided below the reactor. The drive shaft of the motor passes through the bottom shell of the reactor and the center of the turntable in sequence and is fixed to the bottom of the reactor cover. Multiple cylindrical cavities are evenly arranged on the turntable. A discharge pipe penetrating the cover is provided on the reactor cover. The discharge pipe is fitted with a cap. The cylindrical cavities open horizontally on the side away from the center. The gap between the opening and the inner wall of the reactor is less than 0.5 mm.

[0007] The length of the opening of the cylindrical cavity is not less than the length of the connection between the first waveguide and the reactor shell.

[0008] There are four cylindrical cavities.

[0009] The cylindrical cavity is located on the inner side of the outer edge of the turntable.

[0010] The first waveguide is welded to the reactor shell as a whole.

[0011] The reactor cover edge is connected to the top of the cylinder. The upper part of the reactor is provided with a circular groove or a circular protrusion. The cylinder is connected to the upper part of the reactor by one of the following: inserted into the groove, located on the outside of the circular protrusion, or located on the inside of the circular protrusion. The circular protrusion is located on the inner or outer wall of the upper part of the reactor shell, and the circular groove is located in the middle of the upper part of the reactor shell.

[0012] The number of cylindrical cavities is the same as the number of discharge pipes.

[0013] The magnetron is connected to the power supply, and the power supply is connected to the power control panel.

[0014] The drive shaft of the motor is connected to the bottom shell of the reactor via bearings.

[0015] The motor is connected to the power supply and the power control panel.

[0016] This utility model has the following beneficial effects:

[0017] The motor-driven shaft of this invention rotates, causing the turntable and reactor cover to rotate synchronously. Because multiple cylindrical cavities are designed, samples can be placed in each cavity, allowing for continuous operation, improving work efficiency, and reducing the need for frequent equipment switching. Attached Figure Description

[0018] Figure 1 This is a connection diagram of this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the reactor of this utility model.

[0020] Figure 3 This is a top sectional view of the turntable of this utility model.

[0021] Figure 4 This is a partial cross-sectional view of the reactor shell and cylinder in Example 1.

[0022] Figure 5 This is a partial cross-sectional view of the reactor shell and cylinder in Example 2.

[0023] Figure 6 This is a partial cross-sectional view of the reactor shell and cylinder in Example 3.

[0024] Legend: 1. Water load; 2. Circulator; 3. First waveguide; 4. Reactor cover; 5. Motor; 6. Reactor; 7. Turntable; 8. Feed pipe; 9. Second waveguide; 10. Magnetron; 11. Cylindrical cavity; 12. Circular protrusion; 13. Cylinder; 14. Drive shaft; 15. Power control panel; 16. Power supply; 17. Circular groove; 18. Cap. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The connection structure of the water load 1, circulator 2, first waveguide 3, second waveguide 9, and magnetron 10 in this invention adopts an existing connection structure. As long as microwaves can be introduced into the reactor 6, it is acceptable. To enable continuous sample lysis without shutting off the microwaves, the reactor structure described in this embodiment is used. This allows for continuous operation by controlling the rotation of the turntable inside the reactor while microwaves are continuously generated. Example 1

[0027] As shown in the figure, a microwave pyrolysis device includes a water load 1 and a circulator 2. The water load 1 is connected to a magnetron 10 via a second waveguide 9 and to a reactor 6 via a first waveguide 3, which is welded to the reactor 6 shell. A cylindrical turntable 7 is located inside the reactor 6 cavity. A reactor cover 4 is located on top of the reactor 6. A motor 5 is located below the reactor 6. The drive shaft 14 of the motor 5 passes through the bottom shell of the reactor 6 and the center of the turntable 7, and is fixed to the bottom of the reactor cover 4. The drive shaft 14 of the motor 5 is connected to the bottom shell of the reactor 6 via bearings. Four horizontally open cylindrical cavities 11 are evenly arranged on the turntable 7. This allows samples to be placed in each cylindrical cavity during operation. When each cylindrical cavity rotates to the microwave zone, the sample placed inside is pyrolyzed. After pyrolysis, the sample can be removed when the cavity rotates out of the working area, and then replenished with more samples, achieving continuous operation. The reactor cover 4 has four discharge tubes 8 that penetrate the cover body. These tubes are used to put the sample into the cylindrical cavity. Each discharge tube 8 is fitted with a cap 18 to prevent microwave leakage. The number of cylindrical cavities 11 is the same as the number of discharge tubes 8. The discharge tubes 8 are located on the center line of the cylindrical cavity 11.

[0028] The gap between the opening of the cylindrical cavity 11 and the inner wall of the reactor 6 is less than 0.5 mm, preventing microwave leakage. The length of the opening of the cylindrical cavity 11 is the same as the length of the connection between the first waveguide 3 and the reactor 6 shell, enabling microwaves to effectively penetrate the cylindrical cavity. Furthermore, the cylindrical cavity 11 is located inside the outer edge of the turntable 7.

[0029] The edge of the reactor cover 4 is connected to the top of the cylinder 13. A circular groove 17 is provided on the upper part of the reactor 6. The cylinder 13 is inserted into the circular groove 17 on the upper part of the reactor 6. The circular groove 17 is located in the middle of the upper part of the reactor shell. The cylinder and the upper part of the reactor are misaligned so that microwaves will not leak from this point.

[0030] The magnetron 10 is connected to the power supply 16, and the power supply 16 is connected to the power control panel 15. The motor 5 is electrically connected to the power supply 16.

[0031] The power control panel is the WepeX-C1 industrial microwave power control panel. Example 2

[0032] In Example 1, the upper part of the reactor 6 is a circular protrusion 12, and the cylinder 13 is fitted on the circular protrusion 12. The circular protrusion 12 is located on the inner wall of the upper part of the reactor 6 shell, and the rest is the same as in Example 1. Example 3

[0033] In Example 2, the cylinder 13 is inserted into the circular protrusion 12, which is located on the upper outer wall of the reactor 6 shell. There are 6 cylindrical cavities 11 and 6 discharge pipes 8. The rest is the same as in Example 1.

[0034] The working principle of this utility model:

[0035] In operation, the sample is loaded into a test tube and inserted into the cylindrical cavity 11 through the discharge tube 8. The cap 18 is then placed on the discharge tube 8. The power supply is controlled via a power control panel. When the motor operates, the drive shaft 14 rotates, causing the turntable and reactor cover 4 to rotate. When a cylindrical cavity rotates to the point where the first waveguide 3 connects to the reactor 6, microwaves enter through the opening of the cylindrical cavity and pyrolyze the sample inside. After pyrolysis, the drive shaft 14 rotates to rotate the next cylindrical cavity to the working position. For cylindrical cavities that have rotated out of the working position, the cap 13 can be removed, the test tube can be taken out, and the sample to be pyrolyzed can be loaded. This achieves continuous operation.

Claims

1. A microwave pyrolysis apparatus, comprising a water load (1) and a circulator (2), characterized in that: The water load (1) is connected to the magnetron (10) through the second waveguide (9), and the water load (1) is connected to the reactor (6) through the first waveguide (3). A cylindrical turntable (7) is provided inside the reactor (6) shell. A reactor cover (4) is provided on the top of the reactor (6). A motor (5) is provided below the reactor (6). The drive shaft of the motor (5) passes through the bottom shell of the reactor (6) and the center of the turntable (7) in sequence and is fixed at the bottom of the reactor cover. Multiple cylindrical cavities (11) are evenly arranged on the turntable (7). A discharge pipe (8) that penetrates the cover is provided on the reactor cover (4). The discharge pipe (8) is fitted with a pipe cap (18). The cylindrical cavity (11) opens horizontally on the side away from the center. The gap between the opening and the inner wall of the reactor (6) is less than 0.5 mm.

2. The microwave pyrolysis device according to claim 1, characterized in that: The length of the opening of the cylindrical cavity (11) is not less than the length of the connection between the first waveguide (3) and the reactor (6) shell, and the height of the first waveguide is less than the height of the cylindrical cavity.

3. The microwave pyrolysis device according to claim 2, characterized in that: There are four cylindrical cavities.

4. A microwave pyrolysis apparatus according to claim 1, 2 or 3, characterized in that: The cylindrical cavity is located on the inner side of the outer edge of the turntable.

5. A microwave pyrolysis apparatus according to claim 1 or 2, characterized in that: The first waveguide (3) is welded to the reactor (6) shell as a whole.

6. The microwave pyrolysis apparatus according to claim 1, characterized in that: The edge of the reactor cover (4) is connected to the top of the cylinder. The upper part of the reactor (6) shell is provided with a circular groove or a circular protrusion. The cylinder is connected to the upper part of the reactor (6) by inserting into the circular groove, being located on the outside of the circular protrusion, or being located on the inside of the circular protrusion. The circular protrusion is located on the inner or outer wall of the upper part of the reactor (6) shell, and the circular groove is located in the middle of the upper part of the reactor (6) shell.

7. The microwave pyrolysis apparatus according to claim 1, characterized in that: The number of cylindrical cavities (11) is the same as the number of discharge pipes (8).

8. The microwave pyrolysis apparatus according to claim 1, characterized in that: The magnetron (10) is connected to the power supply, and the power supply is connected to the power control panel.

9. The microwave pyrolysis apparatus according to claim 1, characterized in that: The drive shaft of the motor (5) is connected to the bottom shell of the reactor (6) via a bearing.

10. A microwave pyrolysis apparatus according to claim 1 or 9, characterized in that: The motor (5) is connected to the power supply (16) and the power control panel (15).

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