A microwave pyrolysis device

Abstract

The present invention relates to the field of pyrolysis technology, and specifically discloses a microwave pyrolysis device, comprising: a shell having a pyrolysis chamber; a waveguide, one end of which is connected to a microwave generator and the other end of which is connected to the pyrolysis chamber; a microwave feed port protection device, which is arranged on the shell and comprises a baffle mechanism, comprising a baffle, part of which is suitable for passing through a connecting hole arranged on two opposite side walls where the pyrolysis chamber is located, and part of which is located outside the pyrolysis chamber; and at least one stirring device. The baffle comprises a part located outside the pyrolysis chamber and inside the pyrolysis chamber, and connecting holes are arranged on the two side walls where the pyrolysis chamber is located, so that the baffle can reciprocate along the connecting holes, so that the baffle can complete reciprocating motion between the inside and outside of the pyrolysis chamber, and in the process of reciprocating motion, an impurity mixture containing carbon particles will adhere to the baffle and be taken out of the inside of the pyrolysis chamber to the outside of the pyrolysis chamber by the baffle, so as to prevent the impurity mixture containing carbon particles from adhering to the waveguide and causing damage to the waveguide.

Description

Technical Field

[0001] The invention relates to the technical field of microwave heating, and in particular to a microwave pyrolysis device. Background Art

[0002] The principle of microwave heating technology is: when the medium to be heated is placed in a microwave electromagnetic field, the polar molecules and non-polar molecules in the dielectric material will form dipoles or the existing dipoles will be rearranged. In this process, the molecules will swing at a speed of up to hundreds of millions of times per second with the high-frequency alternating electromagnetic field. During this period, it is necessary to overcome the interference and obstruction of the original thermal motion of the molecules and the interaction between molecules. Therefore, an effect similar to friction will be produced, causing the electromagnetic energy to gradually be converted into thermal energy, causing the temperature of the medium to increase significantly.

[0003] Compared with traditional fossil energy heating technology, microwave heating technology has more uniform heating, lower heat transfer loss, higher heating efficiency, better environmental protection and higher safety. Therefore, the industrial field has gradually begun to apply microwave heating technology. For example, in recent years, microwave pyrolysis furnaces have been gradually used to heat waste plastics, waste rubber, medical waste, chemical sludge and other media, so that these media are pyrolyzed into oil, non-condensable combustible gas and solid products.

[0004] During the microwave pyrolysis process, the pyrolysis equipment is operated in a high-temperature environment. The pyrolyzed materials will produce smoke and gas, which contain a large amount of impurities such as carbon. When the smoke and gas enter the feed port of the waveguide, the impurities will contaminate the feed port of the waveguide, especially the contamination of the feed port of the waveguide by absorbing materials such as carbon, which will seriously affect the microwave transmission performance, reduce the working efficiency of the pyrolysis equipment, and even damage the waveguide. After the waveguide is damaged, it will affect the transmission of microwaves, thereby reducing the working efficiency of the pyrolysis equipment.

[0005] A waveguide protection device is disclosed in the prior art, see Figure 1 After the waveguide 1 is connected to the pyrolysis device, a barrier 21 is arranged between the first waveguide 11 and the second waveguide 12, wherein the second waveguide 12 is connected to the pyrolysis chamber of the pyrolysis device and a first cavity is formed therebetween, and an introduction channel 22 is opened on the side wall where the first cavity is located, and a protective medium, such as air, is introduced into the first cavity along the introduction channel 22, so that a dielectric protective layer 222 is formed in the first cavity, and a high-temperature carbon-containing mixture generated from the pyrolyzed material undergoes an oxidation reaction with the protective medium in the dielectric protective layer 222 to generate carbon monoxide or carbon dioxide, thereby achieving the effect that after the carbon in the impurities is oxidized, the impurity mixture will not pollute and damage the waveguide feed port.

[0006] However, in this structure, as the protective medium and the impurity mixture of carbon-containing particles are continuously oxidized, the amount of the protective medium will be greatly reduced. Although the protective medium can be continuously replenished into the first cavity, it is inevitable that in the process of replenishing the protective medium, the impurity mixture of carbon-containing particles will still pass through the medium protective layer and adhere to the baffle assembly and the waveguide, causing damage to the waveguide. Therefore, it is necessary to switch the baffle between the second waveguide and the first waveguide after the pyrolysis equipment has been working for a period of time. During and after the switching process, the pyrolysis equipment needs to be shut down and cleaned, including cleaning the carbon-containing mixture attached to the waveguide and the baffle. After the cleaning work is completed, the equipment can be restarted. As a result, the pyrolysis equipment needs to work intermittently, and the temperature of the material in the pyrolysis equipment will decrease, and it needs to be heated again, resulting in low pyrolysis efficiency. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the microwave feed protection device in the prior art needs to be intermittently shut down for cleaning and replacement of the waveguide and the baffle, resulting in low working efficiency of the pyrolysis equipment, thereby providing a microwave pyrolysis equipment that does not require the pyrolysis equipment to be intermittently shut down for cleaning and replacement of the waveguide and the baffle, resulting in low working efficiency of the pyrolysis equipment.

[0008] A microwave pyrolysis device comprises: a shell, which is arranged on a frame and has a pyrolysis cavity for placing materials therein; a waveguide, one end of which is connected to a microwave generator and the other end of which is connected to the pyrolysis cavity; a microwave feed port protection device, which is arranged on the shell and comprises a baffle mechanism, wherein the baffle mechanism comprises a baffle member, a part of which is suitable for passing through a connecting hole arranged on two opposite side walls where the pyrolysis cavity is located, and a part of which is located outside the pyrolysis cavity; the baffle member is driven by a driving force to reciprocate between the inside and outside of the pyrolysis cavity to bring impurities in the pyrolysis cavity out of the pyrolysis cavity; at least one stirring device is arranged on the shell to avoid the microwave feed port protection device; a stirring component of the stirring device is located in the pyrolysis cavity.

[0009] Optionally, in the above-mentioned microwave pyrolysis equipment, the baffle is in a closed loop structure, a portion of the closed loop structure is suitable for being penetrated on the connecting hole, and a portion of the closed loop structure is located outside the pyrolysis chamber.

[0010] Optionally, in the above microwave pyrolysis device, the closed loop structure is a closed loop barrier belt;

[0011] The microwave feed port protection device also includes a driving mechanism, which is arranged on the frame and includes at least one active roller, at least one driven roller and a driving member for driving the active roller to rotate; the barrier belt is wound around the outer wall surfaces of the active roller and the driven roller, and under the drive of the driving member, the active roller and the driven roller rotate to drive the barrier belt to perform a closed loop circulation motion.

[0012] Optionally, in the above-mentioned microwave pyrolysis equipment, the driving mechanism also includes at least two pressure rollers rotatably provided on the frame and distributed on the movement path of the barrier belt, wherein the two pressure rollers are respectively located outside a connecting hole, and the cross-sections of the bottoms of the two pressure rollers are aligned with the horizontal direction of the connecting hole, so that the conveying surface formed by the barrier belt passing through the connecting hole is suitable to be parallel to the cross-section of the waveguide.

[0013] Optionally, the above-mentioned microwave pyrolysis equipment also includes a roller guide, which is arranged on the microwave pyrolysis equipment corresponding to the connecting hole, and each of the roller guides has a accommodating cavity with an opening, and at least one of the pressure rollers is arranged in the accommodating cavity, and the barrier belt is transported along the roller surface of the pressure roller to the outside of the opening.

[0014] Optionally, in the above-mentioned microwave pyrolysis equipment, the bottom of the waveguide is inserted into the pyrolysis chamber, and a clearance hole is provided on the part of the waveguide inserted into the pyrolysis chamber, and the clearance hole is connected with the connecting hole, and the barrier passes through the connecting hole and the clearance hole in sequence to make reciprocating motion between the inside and outside of the pyrolysis chamber to bring impurities in the pyrolysis chamber out of the pyrolysis chamber.

[0015] Optionally, the microwave pyrolysis device further comprises a cleaning mechanism, wherein the cleaning mechanism comprises a cleaning component, wherein the cleaning component has a cleaning channel, and the barrier member reciprocates through the cleaning channel.

[0016] Optionally, in the microwave pyrolysis device, the cleaning assembly comprises a pressing plate and at least one cleaning member, the pressing plate is arranged on the frame, the cleaning member is arranged on the frame so as to be rotatably disposed relative to the pressing plate, and the cleaning channel is formed between the two.

[0017] When the cleaning member rotates, the inner surface of the barrier member located in the cleaning channel is subjected to an outward supporting force exerted by the pressure plate, and the outer surface of the barrier member is subjected to a cleaning force exerted by the cleaning member.

[0018] Optionally, in the above-mentioned microwave pyrolysis equipment, the stirring device also includes a mounting shaft, one end of the mounting shaft extends into the pyrolysis chamber, and the other end is located outside the pyrolysis chamber, and the stirring component is arranged on the mounting shaft; the stirring component includes at least one first stirring blade and at least one second stirring blade located above the first stirring blade and rotating horizontally, and among the first side end and the second side end of the first stirring blade along the rotation direction thereof, the second side end is located ahead of the first side end in the rotation direction, and the second side end is inclined upward toward the first side end; and / or

[0019] It also includes an auxiliary heating device, which includes a heating tube, one end of which is electrically connected to an external power source, and the other end of which extends into the pyrolysis chamber.

[0020] Optionally, in the above-mentioned microwave pyrolysis equipment, at least the end surface of the second side end is provided with a plurality of first saw teeth arranged in parallel.

[0021] The technical solution of the present invention has the following advantages:

[0022] 1. The microwave pyrolysis equipment provided by the present invention comprises: a shell, which is arranged on a frame and has a pyrolysis chamber for placing materials therein; a waveguide, one end of which is connected to a microwave generator and the other end of which is connected to the pyrolysis chamber; a microwave feed port protection device, which is arranged on the shell and comprises a baffle mechanism, wherein the baffle mechanism comprises a baffle member, a part of which is suitable for passing through a connecting hole arranged on two opposite side walls of the pyrolysis chamber, and a part of which is located outside the pyrolysis chamber; the baffle member is driven by a driving force to reciprocate between the inside and outside of the pyrolysis chamber to bring impurities in the pyrolysis chamber out of the pyrolysis chamber; at least one stirring device is arranged on the shell to avoid the microwave feed port protection device; a stirring component of the stirring device is located in the pyrolysis chamber.

[0023] In the microwave pyrolysis device of this structure, a barrier is provided, which includes parts located outside the pyrolysis chamber and inside the pyrolysis chamber, and connecting holes are provided on the two side walls of the pyrolysis chamber, so that the barrier can reciprocate along the two connecting holes, so that the barrier can complete the reciprocating movement between the inside of the pyrolysis chamber and the outside of the pyrolysis chamber. During the reciprocating movement, the impurity mixture of carbon particles entering the waveguide along the pyrolysis chamber will adhere to the barrier and be taken out of the pyrolysis chamber from the inside to the outside of the pyrolysis chamber by the barrier, so as to prevent the impurity mixture of carbon particles from entering the waveguide connected to the pyrolysis chamber along the pyrolysis chamber and adhering to the waveguide, thereby damaging the waveguide. This method can continuously transfer impurities attached to the baffle to the outside of the pyrolysis chamber, and then protect the microwave feed port without stopping the pyrolysis equipment. Since the pyrolysis equipment does not stop, the pyrolysis efficiency of the material can be effectively improved, and there is no need to shut down the pyrolysis equipment once after running for a certain period of time. This overcomes the problem in the prior art that the pyrolysis equipment needs to be intermittently shut down, and then the waveguide and baffles need to be cleaned and replaced, resulting in low working efficiency of the pyrolysis equipment. At the same time, the stirring device can stir the material in the pyrolysis chamber, thereby making the material stirred more evenly, so that the material can be heated more evenly.

[0024] 2. In the microwave pyrolysis equipment provided by the present invention, the baffle is in a closed loop structure, a portion of the closed loop structure is suitable for being passed through the connecting hole, and a portion of the closed loop structure is located outside the pyrolysis chamber.

[0025] In the microwave pyrolysis equipment of this structure, the baffle is set as a closed loop structure, and the baffle performs closed-loop reciprocating motion along the connecting hole, which can cyclically carry out the impurity mixture containing carbon particles, thereby effectively protecting the microwave feeding port for a long time.

[0026] 3. In the microwave pyrolysis equipment provided by the present invention, the driving mechanism also includes at least two pressure rollers rotatably provided on the frame and distributed on the moving path of the barrier belt, wherein the two pressure rollers are respectively located outside a connecting hole, and the cross-sections of the bottoms of the two pressure rollers are aligned with the level of the connecting hole, so that the conveying surface formed by the barrier belt passing through the connecting hole is suitable to be parallel to the cross-section of the waveguide.

[0027] In the microwave feed port protection device of this structure, a pressure roller is arranged on the outer side of the corresponding connecting hole, and the cross-section of the bottom of the pressure roller is aligned with the level of the connecting hole. The conveying surface formed by the barrier belt passing through the connecting hole is adapted to be parallel to the cross-section of the waveguide by the pressure roller. The barrier belt plays the role of filling the connecting hole, which can prevent the microwave from leaking significantly when being transported to the pyrolysis chamber along the waveguide, resulting in the microwave being unable to be stably transported to the pyrolysis chamber, thereby affecting the pyrolysis efficiency of the material in the pyrolysis equipment.

[0028] 4. The microwave pyrolysis device provided by the present invention also includes a cleaning mechanism, which includes a cleaning component, and the cleaning component has a cleaning channel, through which the baffle moves back and forth. The microwave feed port protection device of this structure can clean the impurity mixture of carbon-containing particles attached to the baffle by setting a cleaning mechanism, so that the impurity mixture falls from the baffle, ensuring the cleanliness of the body of the baffle, which is conducive to the baffle to reciprocate in and out of the pyrolysis chamber, so that more impurity mixture can be taken out of the pyrolysis chamber, making the microwave feed port safer to operate.

[0029] 5. In the microwave pyrolysis equipment provided by the present invention, the stirring device also includes a mounting shaft, one end of the mounting shaft extends into the pyrolysis chamber, and the other end is located outside the pyrolysis chamber, and the stirring component is rotatably provided on the mounting shaft; the stirring component includes at least one first stirring blade and at least one second stirring blade located above the first stirring blade and rotating horizontally, among the first side end and the second side end of the first stirring blade along the rotation direction thereof, the second side end is located ahead of the first side end in the rotation direction, and the second side end is inclined upward toward the first side end; and / or also includes an auxiliary heating device, which includes a heating tube, one end of the heating tube is electrically connected to an external power supply, and the other end extends into the pyrolysis chamber.

[0030] In the microwave pyrolysis device of this structure, a first stirring blade and a second stirring blade are arranged on the mounting shaft, the first side of the first stirring blade is inclined downward toward the second side and arranged on the mounting shaft, and the second stirring blade is horizontally installed on the mounting shaft. In the process of stirring the material, of the first side end and the second side end of the first stirring blade along the rotation direction, the second side end is located ahead of the first side end in the rotation direction, and the second side end is inclined upward toward the first side end, so that the material can be transported to the first side along the second side end, and after the page of the first stirring blade is covered, the material is stirred. The thrust provided to the material by the combination of the first stirring blade and the second stirring blade can realize the left and right movement of the material, so that the material can have two states of movement from the periphery to the center and from the center to the periphery during the stirring process, thereby making the stirring of the material more uniform, ensuring the flatness of the plane on the material, and making the height of the material more consistent during the stirring process. While achieving the effect of uniform heating of the material, since the height of the material at various places is basically consistent, the actual material amount measured is more real and accurate, and the defect of increasing the measurement data error of the material amount due to the inconsistent height of the material during the stirring process is overcome, so that the material height measured by the material measuring device is more accurate;

[0031] By setting the auxiliary heating setting, during the pyrolysis reaction, the gas generated after the material is cracked contacts with the air and high-temperature heating tube in the pyrolysis chamber to form an oxidation reaction, and part of the released heat can heat the material.

[0032] 6. In the microwave pyrolysis device provided by the present invention, at least the end surface of the second side end is provided with a plurality of first saw teeth arranged in parallel. In the stirring assembly of this structure, a plurality of first saw teeth are arranged on the first side, and the first saw teeth can break the material during the stirring process to improve the turning effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a waveguide and a baffle in the prior art provided by the present invention;

[0035] Figure 2 A schematic diagram of the overall structure of the microwave pyrolysis equipment provided by the present invention;

[0036] Figure 3 for Figure 2 The overall structural diagram of the microwave feed protection device shown;

[0037] Figure 4 for Figure 3 A left side view of the microwave feed protection device shown;

[0038] Figure 5 for Figure 4 The left view is a schematic cross-sectional view along the AA direction;

[0039] Figure 6 for Figure 5 A magnified view of the structure at B in the middle;

[0040] Figure 7 It is a schematic diagram of the position structure of the roller guide and the pressure roller;

[0041] Figure 8 is a front view of the stirring component;

[0042] Fig. 9 It is a schematic diagram of the overall structure of the stirring component;

[0043] Description of reference numerals:

[0044] 11. First waveguide; 12. Second waveguide;

[0045] 21. barrier member; 22. introduction channel; 222. medium protection layer;

[0046] 3. Rack; 31. Install the rack; 32. Fix the rack;

[0047] 4. Shell; 41. Pyrolysis chamber;

[0048] 5. Waveguide;

[0049] 6. Microwave generator;

[0050] 7. barrier mechanism; 71. barrier member; 72. connecting hole;

[0051] 8. Driving mechanism; 81. Active roller; 82. Driven roller; 83. Driving member; 84. Pressing roller;

[0052] 85, roller guide; 851, accommodating cavity; 852, opening;

[0053] 9. Cleaning mechanism; 91. Cleaning assembly; 911. Pressing plate; 922. Cleaning part;

[0054] 92. Cleaning channel; 93. Water collecting tank;

[0055] 101. guide member; 102. biasing member;

[0056] 103. Cooling mechanism; 104. Baffle plate;

[0057] 105. Install the shaft;

[0058] 106, first stirring blade; 1061, first side end; 1062, second side end; 1063, first sawtooth;

[0059] 107, second stirring blade; 1071, second sawtooth;

[0060] 108, heating tube; 109, air inlet; 110, air outlet; 111, feed inlet; 112, discharge outlet;

[0061] 113. Pipeline; 114. Tensioner; 115. Guide portion; 116. Installation cavity. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0063] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Example

[0066] This embodiment describes a microwave pyrolysis device, see Figure 2 The microwave pyrolysis equipment includes a frame 3, a shell 4, a waveguide 5, a microwave generating device, a microwave feed port protection device and a stirring device, wherein the frame 3 includes a mounting frame 31 and a fixed frame 32, the shell 4 is fixed by the fixed frame 32, the mounting frame 31 is mounted on the shell 4, and is used to fix the microwave feed port protection device, and a pyrolysis cavity 41 for placing materials is provided inside the shell 4, the microwave generating device includes a microwave generator 6 and an absorbing component, the absorbing component is arranged in the pyrolysis cavity 41, and the microwave generator 6 is arranged outside the shell 4, one end of the waveguide 5 is connected to the microwave generator 6, and the other end is connected to the pyrolysis cavity 41, and the microwave feed port protection device is arranged on the fixed frame 32.

[0067] Among them, the microwaves emitted by the above-mentioned microwave generator 6 are transmitted to the inside of the pyrolysis chamber 41 through the waveguide 5. The absorbing component can receive the microwaves emitted by the microwave generator 6 and generate the heat required for the pyrolysis reaction of the material. During the pyrolysis reaction, the microwave feed protection device protects the waveguide 5 to prevent the waveguide 5 from being damaged. During the pyrolysis of the material, the stirring device is used to stir the material to achieve the effect of uniformly heating the material.

[0068] Specifically, the absorbing component can be configured as a microwave absorption excitation layer, which is disposed on the bottom surface of the inner wall of the pyrolysis chamber 41. The material of the microwave absorption excitation layer is silicon carbide, iron oxide, copper oxide, manganese dioxide, barium titanate, ferrite or one or more other absorbing materials. The inner wall surface of the pyrolysis chamber 41 where the material is placed is coated with high-temperature and corrosion-resistant materials such as ceramics, or is lined with an inner lining to prevent corrosion to the shell 4 during the heating process of the material.

[0069] During the pyrolysis of the material, the waste gas or other gas mixture generated by the pyrolysis reaction of the material and the gas generated by the high-temperature oxidation reaction of the object contain an impurity mixture containing carbon impurities, which will adhere to the waveguide 5. The microwave feed port protection device can protect the waveguide 5 from being attached to and damaged by the impurity mixture containing carbon particles that enter and adhere to the waveguide 5 along the pyrolysis cavity 41, see Figure 2-Figure 9 The protective device includes a barrier mechanism 7 arranged on the mounting frame 31, and the barrier mechanism 7 includes a barrier member 71. A portion of the barrier member 71 is suitable for penetrating the connecting holes 72 on the two opposite side walls where the pyrolysis chamber 41 of the pyrolysis mechanism is located. A portion of the barrier member 71 is located outside the pyrolysis chamber 41, and another portion of the barrier member 71 is located inside the pyrolysis chamber 41. The barrier member 71 can be driven by a driving force and can reciprocate between the inside and outside of the pyrolysis chamber 41 to bring impurities in the pyrolysis chamber 41 out of the pyrolysis chamber 41.

[0070] By setting a barrier 71, the barrier 71 includes a portion located outside the pyrolysis chamber 41 and inside the pyrolysis chamber 41, and connecting holes 72 are set on the two side walls of the pyrolysis chamber 41, so that the barrier 71 can reciprocate along the two connecting holes 72, so that the barrier 71 can complete the reciprocating movement between the inside of the pyrolysis chamber 41 and the outside of the pyrolysis chamber 41. In the process of reciprocating movement, the impurity mixture of carbon particles entering the inside of the waveguide 5 along the pyrolysis chamber 41 will adhere to the barrier 71 and be taken out of the inside of the pyrolysis chamber 41 to the outside of the pyrolysis chamber 41 by the barrier 71, so as to prevent the impurity mixture of carbon particles from entering the waveguide 5 along the pyrolysis chamber 41. 5, and adhere to the waveguide 5, causing damage to the waveguide 5, and in this way, the impurities attached to the baffle 71 can be continuously transferred to the outside of the pyrolysis chamber 41, so that the microwave feed port of the waveguide 5 can be protected without stopping the pyrolysis equipment. Since the pyrolysis equipment does not stop, the pyrolysis efficiency of the material can be effectively improved, and there is no need to stop the pyrolysis equipment once after running for a certain period of time, which overcomes the problem in the prior art that the pyrolysis equipment needs to be intermittently stopped, and then the waveguide 5 and the baffle 71 need to be cleaned and replaced, resulting in low working efficiency of the pyrolysis equipment. The protective device has a simple structure and is more convenient to use.

[0071] Specifically, the barrier 71 can be configured to be a closed loop structure, wherein a portion of the closed loop structure is suitable for being passed through the connecting hole 72, and a portion of the closed loop structure is located outside the pyrolysis chamber 41, wherein the barrier 71 of the closed loop structure can be configured to be a closed loop barrier belt, which is driven by a driving force to pass through the connecting hole 72 and perform a reciprocating closed loop motion around the connecting hole 72. The barrier 71 is configured to be a closed loop structure, and the barrier 71 performs a closed loop reciprocating motion along the connecting hole 72, which can cyclically carry out the impurity mixture containing carbon particles, thereby effectively protecting the microwave feeding port for a long time. The barrier belt can be configured to be a Teflon belt, a mica belt or other microwave-transparent materials, so that microwaves can pass through the barrier belt and enter the pyrolysis chamber 41.

[0072] In this embodiment, see Figure 3 , Figure 4 and Figure 5 The driving force source of the above-mentioned barrier belt can be a driving mechanism 8, which is arranged on the above-mentioned mounting frame 31, and includes at least one active roller 81, at least one driven roller 82 and a driving member 83 for driving the active roller 81 to rotate. Referring to the figure, the number of active rollers 81 can be set to one, and the number of driven rollers 82 can be set to three. The barrier belt is wound around the outer wall surface of the active roller 81 and the driven roller 82. Under the drive of the driving member 83, the active roller 81 is driven to rotate by the driving member 83, and then drives the driven roller 82 to rotate to drive the barrier belt to perform a closed loop circulation motion. The driving mechanism 8 is arranged on the mounting frame 31, and can stably drive the barrier belt to rotate, so that the barrier belt can perform a stable conveying motion along the connecting hole 72, and then bring the impurity mixture out of the pyrolysis chamber 41, so as to prevent the impurity mixture from adhering to the waveguide 5, and realize the protection of the microwave feed port of the waveguide.

[0073] In this embodiment, in order to avoid the problem that microwaves cannot be stably delivered to the pyrolysis chamber 41 due to a large leakage from the connecting hole 72 when the microwaves are delivered to the pyrolysis chamber 41 along the waveguide 5, thereby affecting the pyrolysis efficiency of the materials in the pyrolysis device, see Figure 5 and Figure 7 The driving mechanism 8 further comprises at least two pressing rollers 84 rotatably mounted on the mounting frame 31 and distributed on the moving path of the barrier belt, wherein the two pressing rollers 84 are respectively located outside a connecting hole 72, and the cross-sections of the bottoms of the two pressing rollers 84 are aligned with the level of the connecting holes 72, so that the conveying surface formed by the barrier belt passing through the connecting hole 72 is suitable to be parallel to the cross-section of the waveguide 5, and the barrier belt plays the role of filling the connecting hole 72.

[0074] Specifically, the pressure roller 84 can be arranged in the roller guide 85, see Figure 7The roller guide 85 is arranged on the pyrolysis equipment corresponding to the connecting hole 72. Each roller guide 85 has a accommodating cavity 851, which has an opening 852. At least one pressure roller 84 is arranged in the accommodating cavity 851. The above-mentioned barrier belt can be transported along the roller surface of the pressure roller 84 to the outside of the opening 852, and then continue to fit with the outer wall surface of the driven roller 82 along the opening 852. The roller guide 85 plays a guiding role, so that the barrier belt can be accurately transported along the driven roller 82. The number of pressure rollers 84 is set according to actual usage requirements.

[0075] In addition, during the conveying movement of the barrier belt along the drive mechanism 8, see Figure 3 A belt tensioner 114 may also be provided on the moving path of the barrier belt, and the tensioning force of the barrier belt may be adjusted by the tensioner 114 to prevent the barrier belt from becoming loose.

[0076] In this embodiment, in order to clean the impurity mixture on the barrier belt, the protection device also includes a cleaning mechanism 9, and the cleaning mechanism 9 is arranged on the mounting frame 31. Figure 3 and Figure 5 The cleaning mechanism 9 includes a cleaning component 91, and the cleaning component 91 has a cleaning channel 92. The barrier belt passes through the cleaning channel 92 to make a reciprocating motion. When the barrier belt makes a reciprocating motion along the cleaning channel 92, the cleaning component 91 cleans the barrier belt.

[0077] Specifically, the above-mentioned cleaning component 91 includes a pressure plate 911 and a cleaning member 922. The pressure plate 911 is set on the mounting frame 31, and the cleaning member 922 is arranged relative to the pressure plate 911. The cleaning member 922 is rotatably arranged on the mounting frame 31, and a cleaning channel 92 is formed between the two. The barrier belt can reciprocate along the cleaning channel 92. When passing through the cleaning channel 92, the cleaning member 922 cleans the barrier belt.

[0078] When the cleaning member 922 rotates, the inner surface of the barrier belt in the cleaning channel 92 is subjected to the outward supporting force exerted by the pressure plate 911, and the outer surface of the barrier belt is subjected to the cleaning force exerted by the cleaning member 922. The cleaning member 922 can be set as a brush roller, which can rotate.

[0079] See also Figure 6When the brush roller is rotated to clean the barrier belt, the brush on the brush roller can contact the barrier belt body and apply a cleaning force to the outer surface of the barrier belt to clean the impurity mixture attached to the belt body and drop it from the barrier belt body. When the barrier belt passes through the cleaning channel 92, the barrier belt is subjected to the cleaning force, and the barrier belt body in the cleaning channel 92 will bend. At this time, the pressure plate 911 will apply a supporting force to the inner side of the barrier belt. After the barrier belt is subjected to the cleaning force, under the action of the supporting force, the portion of the barrier belt located in the cleaning channel 92 will not bend, so that the brush roller can effectively clean the barrier belt. After cleaning, the clean barrier belt is continued to be driven by the active roller 81 and the driven roller 82 to move and move into the pyrolysis chamber 41, and the impurity mixture is attached to the barrier belt again, so as to carry out a cycle.

[0080] In this embodiment, in order to receive the impurity mixture dropped from the barrier belt, a water collecting tank 93 is further included. The water collecting tank 93 is arranged below the cleaning channel 92 and avoids the moving path distribution of the barrier member 71. The top opening of the water collecting tank 93 is used to receive the particles dropped from the cleaning channel 92. Figure 6 The water collecting tank 93 is arranged on one side of the cleaning member. After the brush roller cleans the impurity mixture from the baffle 71, the impurity mixture falls into the water collecting tank 93. Some water or coolant can be placed in the water collecting tank 93. When the impurity mixture is taken out of the pyrolysis chamber 41, the impurity mixture still has some heat. Therefore, after the impurity mixture is cleaned from the baffle belt and collected in the water collecting tank 93, the water or coolant in the water collecting tank 93 can cool the impurity mixture.

[0081] In addition, in order to enable the cleaning member 922 to stably apply a cleaning force to the barrier strip, a guiding mechanism is also included, wherein the guiding mechanism includes at least one guiding member 101 and a biasing member 102, each of the guiding members 101 having an installation cavity 116 and at least one guiding portion 115, in which at least one cleaning member 922, i.e., a brush roller, is rotatably installed, and the guiding portion can be inserted into a guiding channel on the mounting frame 31 and can reciprocate along the guiding channel, wherein the biasing member 102 is correspondingly mounted on the guiding portion 115 one by one, and the biasing member 102 is used to provide the guide member 101 with a biasing force to apply toward the barrier member 71 (i.e., the barrier strip).

[0082] Specifically, the guide member 101 can be set as an installation box, and a cleaning opening is set on one side of the outer surface of the installation box facing the baffle belt. The installation box has the above-mentioned installation cavity 116, and a cleaning member 922 is set in the installation box. The cleaning member 922 can rotate relative to the installation box. A plurality of guide shafts are set on the outer wall of one side of the installation box relative to the cleaning opening. The guide shaft serves as a guide portion 115, and a guide channel corresponding to the guide shaft is set on the installation frame 31. One end of the guide shaft is inserted into the guide channel and can extend out of the guide channel. Outside the channel, the biasing member 102 can be set as a spring, which is sleeved on the guide shaft and the part of the guide shaft between the installation box and the guide channel. Under the action of the spring, the installation box has a tendency to move toward the side of the barrier belt, and then the cleaning member 922 located in the installation box can approach the barrier belt to apply a stable cleaning force to the barrier belt, thereby achieving the effect of cleaning off the impurity mixture attached to the barrier belt, wherein the number of cleaning members 922 is arranged according to actual use, and can be set to one or two.

[0083] Of course, in other optional embodiments, the cleaning mechanism 9 further includes a purge member (not shown in the figure), the medium outlet of the purge member is arranged toward the outer surface of the barrier member 71, wherein the medium outlet can be changed to liquid or gas, such as air, nitrogen and other inert gases, and when the gas is introduced, high-pressure gas can be used to clean the impurity mixture on the outer surface of the barrier belt, thereby further improving the cleaning rate of the impurity mixture on the barrier belt, and ensuring that the barrier belt is clean and continues to be used.

[0084] Specifically, the waveguide 5 can be set on the inner surface of the barrier belt of the closed loop structure, one end of the waveguide 5 can be connected to the microwave generator 6 through the pipeline 113, the bottom of the other end of the waveguide 5 is inserted into the pyrolysis chamber 41, and a clearance hole connected with the connecting hole 72 is provided on the part of the waveguide 5 extending into the pyrolysis chamber 41 for the barrier member 71 to pass through. The barrier member 71 can pass through the clearance hole and the connecting hole 72 in turn, and reciprocate along the travel channel formed by the clearance hole and the connecting hole 72. The barrier belt of the closed loop structure can also pass through the travel channel and move around the travel channel. A cleaning mechanism 9 is set on the path of the circulating motion of the barrier belt, and the cleaning mechanism 9 is used to clean the impurity mixture on the barrier belt to ensure that the barrier belt entering the travel channel is in a clean state.

[0085] See also Figure 2 and Figure 5The connecting hole can be arranged on the two side walls where the pyrolysis chamber is located. The side walls can be on the two side walls at the connection between the waveguide and the shell. Of course, in other embodiments, the side walls can also be on the two side walls away from the connection. The barrier 71 only needs to be able to reciprocate along the connecting hole 72 in and outside the pyrolysis chamber.

[0086] In this embodiment, a cooling mechanism 103 and a baffle 104 are also included. The baffle 104 is arranged on the waveguide 5 along the cross-sectional direction of the waveguide 5 to divide the waveguide 5 into a first waveguide and a second waveguide. The first waveguide is located above the baffle, wherein the cooling mechanism 103 is arranged on the waveguide 5, and is located in the waveguide cavity surrounded by the baffle 71 and the baffle 104. The baffle 104 can be made of a quartz glass plate, or other microwave-transparent materials, such as silicon nitride material, or mica, ceramics and other microwave-transparent materials. The microwaves generated by the microwave generator 6 can pass through the baffle and enter the pyrolysis chamber 41. The baffle can protect the first waveguide, and the second waveguide will absorb the heat released from the pyrolysis chamber 41. The baffle can absorb part of the heat to prevent the first waveguide from being too hot.

[0087] Specifically, the second waveguide is cooled by the cooling mechanism 103 to avoid the temperature of the second microwave feeding port of the second waveguide being too high, which may affect the operation of the equipment, thereby ensuring the normal operation of the equipment. The cooling component may be a water jacket, in which cold water is circulated. Under the action of the cold water, the heat at the feeding port of the second waveguide can be taken away, thereby avoiding the temperature of the feeding port of the second waveguide being too high, which may affect the operation of the equipment, thereby ensuring the normal operation of the equipment.

[0088] In the present embodiment, the stirring device is arranged on the shell 4 avoiding the microwave feed protection device. Referring to the figure, the stirring device includes a mounting shaft 105 and a stirring component, wherein the stirring component is arranged in the pyrolysis chamber 41, one end of the mounting shaft 105 extends into the pyrolysis chamber 41, and the other end is located outside the pyrolysis chamber 41. The mounting shaft 105 is connected to a rotating drive motor outside the pyrolysis chamber 41, and the rotating drive motor is used to drive the mounting shaft 105 to rotate, thereby driving the stirring component to rotate and stirring the material.

[0089] Of course, in other optional embodiments, the stirring component can be rotatably disposed on the mounting shaft 105. For example, a rotating shaft is disposed between the stirring component and the mounting shaft 105, the mounting shaft 105 is hollow, and then the stirring shaft is located in the hollow shaft of the mounting shaft 105. One end of the stirring shaft is connected to the rotating drive motor, and the other end extends out of the mounting shaft 105 and is connected to the stirring component.

[0090] The stirring component includes at least one first stirring blade 106 and at least one second stirring blade 107 located above the first stirring blade 106 and rotating horizontally. In the first side end 1061 and the second side end 1062 of the first stirring blade 106 along the rotation direction, the second side end 1062 is located ahead of the first side end 1061 in the rotation direction, and the second side end 1062 is inclined upward toward the first side end 1061. The stirring component is used to stir the material. During the stirring process, the material can be transported along the second side end 1062 to the first side end 1061, and the combination of the first stirring blade 106 and the second stirring blade 107 provides a stirring effect. The thrust of the supplied material can realize the left and right movement of the material, so that the material can have two states during the stirring process: moving from the periphery to the center and moving from the center to the periphery, thereby making the stirring of the material more uniform, ensuring the flatness of the surface on the material, and making the height of the material more consistent during the stirring process, thereby achieving the effect of uniform heating of the material. At the same time, since the height of the material at each location is basically consistent, when it is necessary to measure the amount of material in the pyrolysis chamber 41, the actual amount of material measured is more real and accurate, overcoming the defect of increasing the measurement data error of the material amount due to inconsistent material height during the stirring process, and achieving higher accuracy of the material height measured by the material measuring device.

[0091] Specifically, in order to be able to crush the materials during the mixing process, see Fig. 9 , a plurality of first saw teeth 1063 arranged in parallel can be arranged on the second side end 1062, and of course, a plurality of first saw teeth 1063 arranged in parallel can also be arranged on the first side end 1061, the first saw teeth 1063 having a tooth tip, the tooth tip is arranged to be inclined with respect to the axis of the mounting shaft 105, the tooth tip scoops up the material and conveys it along the second side end 1062 of the first stirring blade 106 to the upper surface of the first side end 1061, ensuring that the material can completely cover the first stirring blade 106, so as to improve the effect of turning the material left and right, and a plurality of second saw teeth 1063 arranged in parallel are arranged on the outer edge wall of the second stirring blade 107 Tooth 1071, the second sawtooth 1071 is used in conjunction with the first sawtooth 1063, so that the material can be crushed more finely, and the agglomerated material can also be crushed, thereby further improving the material crushing effect. In this way, the material can be flipped up and down under its own gravity, and the material can be moved left and right under the thrust of the first stirring blade 106. The material can be stirred with a high degree of consistency and will not be stirred in a water vortex manner. Because the material covers the first stirring blade 106 and the second stirring blade 107, the material is covered during stirring, so the appearance of dust can be reduced, thereby avoiding the generation of dust during the stirring process.

[0092] In this embodiment, the first stirring blade 106 and the second stirring blade 107 can be arranged on the mounting shaft 105 at intervals. Fig. 9 The number of the first stirring blades 106 and the second stirring blades 107 can be set to one group or two groups, and of course can also be set to three or four respectively. When in use, the specific number can be arranged according to actual needs. It needs to be ensured that the inclination direction of each first stirring blade 106 needs to be set consistent, for example, all are left-handed or all are right-handed.

[0093] The bodies of the first stirring blade 106 and the second stirring blade 107 are made of high temperature and wear resistant materials or their surfaces are coated with high temperature and wear resistant materials, which can withstand certain high temperatures, improve the smoothness of the surface after material friction, and increase the service life of the stirring assembly.

[0094] In this embodiment, the number of stirring devices on the shell 4 can be set to one, or to two or more. When there are two or more stirring devices, each stirring device is adjacently arranged on the shell 4, and two or more stirring devices are used together. The first sawtooth 1063 and the first sawtooth 1063 or the second sawtooth 1071 on the adjacent stirring devices are engaged with each other, so that the material crushing effect is better and the occurrence of dust can be reduced. The rotation direction of the first stirring blade 106 located on different installation shafts 105 can be set differently, and can be all left-handed spiral blades or all right-handed spiral blades, or a mixture of left and right spiral blades. However, the rotation direction of the first stirring blade 106 located on the same installation shaft 105 is set to the same, and they are all unified left-handed blades or right-handed blades.

[0095] In this embodiment, the microwave pyrolysis equipment also includes an auxiliary heating device, which includes a heating tube 108. One end of the heating tube 108 is electrically connected to an external power supply, and the other end extends into the pyrolysis chamber 41. In the specific setting, the heating tube 108 can be directly set on the shell 4, and the heating tube 108 and the shell 4 are installed and connected through a fixing plate. An insulating plate is provided at the part of one end of the heating tube 108 located outside the pyrolysis chamber 41. The heating tube 108 can adopt a silicon carbide tube or an electric heating tube 108, a resistance wire or other high-temperature resistant heating equipment.

[0096] An air inlet 109, an air outlet 110, a feed port 111 and a discharge port 112 are provided on the shell 4, and each port is connected to the pyrolysis chamber 41, so that safety gas and air can be introduced into the air inlet 109. The air outlet 110 is used to discharge waste gas or other gas mixtures generated after the pyrolysis reaction and gas generated after the high-temperature oxidation reaction of the material. A heating tube 108 is provided. During the pyrolysis reaction, the gas generated after the pyrolysis of the material contacts the air in the pyrolysis chamber 41 and the heating tube 108 to form an oxidation reaction. Part of the heat released by the oxidation reaction can be provided to heat the original material, and the other part is discharged along the air outlet 110 with the mixed gas generated after the pyrolysis reaction. After the reaction is completed, the material after the pyrolysis reaction is discharged from the pyrolysis chamber 41 from the discharge port 112 according to the set amount, so that the microwave pyrolysis equipment in this embodiment can also perform pyrolysis in an aerobic environment.

[0097] In this embodiment, an air inlet flow meter can be set at the position of the air inlet 109, and the air inlet flow meter can display the amount of gas introduced along the air inlet 109. An air outlet flow meter can be set at the air outlet 110 to display the amount of gas discharged along the air outlet 110. At the same time, an exhaust fan is set at the air outlet 110, and the natural air intake volume is controlled at 50-800M 3 / h range, exhaust volume controlled at 100-1000M 3 / h, for example: exhaust volume ≧ material cracking gas production + air intake volume, the oxygen contained in the inhaled air reacts with the cracked gas to produce an oxidation chemical reaction at high temperature, and the gas after the oxidation reaction is discharged from the exhaust port.

[0098] The material object for pyrolysis in this embodiment can be a mixture of carbon and a material that does not contain organic matter, or it can be a material that does not contain organic matter but can absorb microwaves. The material that does not contain organic matter can be industrial waste salt and other materials that need to remove organic matter. The material is introduced into the pyrolysis chamber 41 through the feed port 111 to perform a pyrolysis reaction of the material.

[0099] The working process of the pyrolysis equipment provided by the present invention is as follows:

[0100] First, the starting material to be processed is fed into the pyrolysis chamber from the feed port, the height of the material is adjusted within the range of 180mm-300mm, the microwave generator is turned on, and the microwaves emitted by the microwave generator enter the pyrolysis chamber through the waveguide to heat the material, and the material undergoes microwave pyrolysis reaction. After the pyrolysis reaction is completed, the material is discharged from the discharge port.

[0101] Among them, the electromagnetic energy generated by the microwave generator is initially mainly absorbed by the microwave absorption excitation layer and then transmitted to the material. As the temperature in the pyrolysis chamber increases, the material is continuously pyrolyzed. During the pyrolysis reaction, the stirring device is turned on and the material is stirred by the stirring device to increase the pyrolysis rate.

[0102] When the temperature rises to 300℃-700℃, the microwave generator stops emitting microwaves and starts the insulation timing. Due to the different organic components and molecular weights contained in the materials, the required cracking temperature and cracking time are different. Therefore, the reaction temperature is determined according to the material conditions to calculate the insulation time, which is about 5-300 minutes. The insulation time is set by the material feeding and discharging amounts, customer needs and material conditions.

[0103] During the pyrolysis reaction, organic matter in the material is cracked. Under the auxiliary heating of the high-temperature heating tube, the gas produced after the cracking can come into contact with the air introduced from the air inlet to form an oxidation reaction. Part of the heat released is used to heat the original material, and the other part is discharged along the outlet with the mixed gas produced after the pyrolysis reaction. After the reaction is completed, the material after the pyrolysis reaction is discharged from the pyrolysis chamber along the outlet according to the set amount.

[0104] When the material in the pyrolysis chamber reaches the set value, new material is added. The feeding method is to feed slowly after every 5-300 minutes, that is, to add the required weight at a uniform speed within 1-60 minutes. Of course, the feeding can also be intermittent, that is, to feed a certain weight of material every 1-500 seconds, and to feed the required weight of material N times on average within 60 minutes;

[0105] Among them, during the feeding process, the gas in the pyrolysis chamber needs to be discharged, and the exhaust volume of the gas needs to be greater than the total amount of cracking gas and the air introduced. During the insulation period, since the gas generated after the pyrolysis of the material can contact with the air in the pyrolysis chamber and the heating tube to form an oxidation reaction, the exhaust volume can be adjusted to be slightly larger than the air intake volume to reduce heat loss.

[0106] The above feeding action is repeated after the set conditions are met until the machine stops after a certain period of time according to the set target.

[0107] Before the material undergoes pyrolysis reaction, air is introduced into the pyrolysis chamber through the air inlet. The air intake volume is controlled at 50-800m 3 / h range, exhaust volume controlled at 100-1000m 3 / h, and then start the pyrolysis reaction. The medium pyrolyzes in a high-temperature oxygen atmosphere, the exhaust volume ≧ cracking gas production + intake volume, the oxygen contained in the inhaled air and the gas produced by the cracked object undergo an oxidation chemical reaction at high temperature, and the gas after the oxidation reaction is discharged from the exhaust device.

[0108] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A microwave pyrolysis device, characterized in that: include: A shell (4) is arranged on the frame (3), and has a pyrolysis chamber (41) inside for placing materials; A waveguide (5), one end of which is connected to the microwave generator (6), and the other end of which is connected to the pyrolysis chamber (41); A microwave feed port protection device is arranged on the shell (4), and comprises a barrier mechanism (7), wherein the barrier mechanism (7) comprises a barrier member (71), a portion of which is suitable for passing through the top of the pyrolysis chamber (41), two sides of the barrier member (71) are respectively fixed in the communicating holes (72) on the side wall where the pyrolysis chamber (41) is located, and a portion of the barrier member (71) is located outside the pyrolysis chamber (41); the barrier member (71) is driven by a driving force to reciprocate between the inside of the pyrolysis chamber (41) and the outside of the pyrolysis chamber (41), so as to bring impurities in the pyrolysis chamber (41) out of the pyrolysis chamber (41); at least one stirring device, which is arranged on the housing (4) away from the microwave feed port protection device; a stirring component of the stirring device is located in the pyrolysis chamber (41); The baffle (71) is in a closed loop structure, a portion of the closed loop structure is suitable for being inserted into the connecting hole (72), and a portion of the closed loop structure is located outside the pyrolysis chamber (41); The bottom of the waveguide (5) is inserted into the pyrolysis chamber (41), and a clearance hole is provided on the portion of the waveguide (5) inserted into the pyrolysis chamber (41), the clearance hole is connected to the connecting hole (72), and the blocking member (71) passes through the connecting hole (72) and the clearance hole in sequence, so as to make a reciprocating motion between the inside of the pyrolysis chamber (41) and the outside of the pyrolysis chamber (41), so as to bring the impurities in the pyrolysis chamber (41) out of the pyrolysis chamber (41); The closed loop structure is a closed loop barrier tape, and the material of the barrier tape is Teflon tape or mica tape.

2. The microwave pyrolysis equipment according to claim 1, characterized in that: The microwave feed port protection device further comprises a driving mechanism (8), wherein the driving mechanism (8) is arranged on the frame (3), and comprises at least one active roller (81), at least one driven roller (82), and a driving member (83) for driving the active roller (81) to rotate; the barrier belt is wound around the outer wall surfaces of the active roller (81) and the driven roller (82); under the drive of the driving member (83), the active roller (81) and the driven roller (82) rotate to drive the barrier belt to perform a closed loop circulation motion.

3. The microwave pyrolysis equipment according to claim 2, characterized in that: The driving mechanism (8) further comprises at least two pressure rollers (84) rotatably arranged on the frame (3) and distributed on the moving path of the barrier belt, wherein the two pressure rollers (84) are respectively located outside a connecting hole (72), and the cross-sections of the bottoms of the two pressure rollers (84) are aligned with the level of the connecting hole (72), so that the conveying surface formed by the barrier belt passing through the connecting hole (72) is suitable to be parallel to the cross-section of the waveguide (5).

4. The microwave pyrolysis equipment according to claim 3, characterized in that: It also includes a roller guide (85) which is arranged on the microwave pyrolysis device corresponding to the connecting hole (72). Each of the roller guides (85) has a receiving cavity (851) having an opening (852). At least one pressure roller (84) is arranged in the receiving cavity (851). The barrier belt is transported along the roller surface of the pressure roller (84) to the outside of the opening (852).

5. The microwave pyrolysis equipment according to claim 1, characterized in that: It also comprises a cleaning mechanism (9), wherein the cleaning mechanism (9) comprises a cleaning component (91), wherein the cleaning component (91) has a cleaning channel (92), and the barrier (71) passes through the cleaning channel (92) to perform reciprocating motion.

6. The microwave pyrolysis equipment according to claim 5, characterized in that: The cleaning assembly (91) comprises a pressing plate (911) and at least one cleaning member (922), wherein the pressing plate (911) is arranged on the frame (3), and the cleaning member (922) is arranged on the frame (3) in a manner that is rotatable and arranged relative to the pressing plate (911), and the cleaning channel (92) is formed between the two. When the cleaning member (922) rotates, the inner surface of the baffle member (71) located in the cleaning channel (92) is subjected to an outward supporting force exerted by the pressure plate (911), and the outer surface of the baffle member (71) is subjected to a cleaning force exerted by the cleaning member (922).

7. The microwave pyrolysis equipment according to claim 6, characterized in that: The stirring device further comprises a mounting shaft (105), one end of which extends into the pyrolysis chamber (41) and the other end of which is located outside the pyrolysis chamber (41), and the stirring component is arranged on the mounting shaft (105); the stirring component comprises at least one first stirring blade (106) and at least one second stirring blade (107) which is located above the first stirring blade (106) and rotates horizontally, wherein the first stirring blade (106) has a first side end (1061) and a second side end (1062) along the rotation direction thereof, the second side end (1062) is located ahead of the first side end (1061) in the rotation direction, and the second side end (1062) is inclined upward toward the first side end (1061); and / or It also includes an auxiliary heating device, which includes a heating tube (108), one end of the heating tube (108) is electrically connected to an external power source, and the other end extends into the pyrolysis chamber (41).

8. The microwave pyrolysis equipment according to claim 7, characterized in that: At least one end surface of the second side end (1062) is provided with a plurality of first saw teeth (1063) arranged in parallel.

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