A microwave feed protection device and microwave pyrolysis equipment

Abstract

The present invention relates to the technical field of microwave pyrolysis equipment, and provides a microwave feed protection device and a microwave pyrolysis equipment, wherein the microwave feed protection device comprises a frame and a baffle mechanism: the baffle mechanism comprises a baffle, part of which is suitable for penetrating the connecting holes on the two opposite side walls where the pyrolysis chamber of the pyrolysis mechanism is located, and part of which is located outside the pyrolysis chamber; the baffle is driven by a driving force, and the baffle reciprocates between the inside and outside of the pyrolysis chamber to bring the impurities in the pyrolysis chamber out of the pyrolysis chamber. By setting the baffle, the baffle can reciprocate between the inside and outside of the pyrolysis chamber, and in the process of reciprocating, the impurity mixture containing carbon particles will adhere to the baffle, and be brought out from 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 entering the waveguide along the pyrolysis chamber and adhering to the waveguide, thereby damaging the waveguide.

Description

Technical Field

[0001] The invention relates to the technical field of microwave pyrolysis, and in particular to a microwave feed protection device and microwave pyrolysis equipment. 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 requires intermittent shutdown to clean and replace the waveguide and the baffle, resulting in low working efficiency of the pyrolysis equipment.

[0008] A microwave feed port protection device comprises a frame and a barrier mechanism: the barrier mechanism comprises a barrier member, part of which is suitable for penetrating connecting holes on two opposite side walls of a pyrolysis chamber of a pyrolysis mechanism, and part of which is located outside the pyrolysis chamber; the barrier member is driven by a driving force, and reciprocates between the inside and outside of the pyrolysis chamber to bring impurities in the pyrolysis chamber out of the pyrolysis chamber.

[0009] Optionally, in the above-mentioned microwave feed port protection device, 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 mechanism.

[0010] Optionally, in the above-mentioned microwave feed port protection device, the closed-loop structure is a closed-loop barrier belt; it 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 that drives the active roller to rotate; the barrier belt is wound around the outer wall surface 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 circulating motion.

[0011] Optionally, in the above-mentioned microwave feed port protection device, 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.

[0012] Optionally, the microwave feed port protection device further includes a roller guide, which is arranged on the pyrolysis equipment corresponding to the connecting hole, and each of the roller guides has a accommodating cavity with an opening, and at least one pressure roller 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.

[0013] Optionally, the microwave feed port protection 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.

[0014] Optionally, in the above microwave feed port protection device, the cleaning assembly includes a pressing plate and at least one cleaning member, the pressing plate is arranged on a 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;

[0015] 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.

[0016] Optionally, in the above-mentioned microwave feed port protection device, the cleaning mechanism also includes a water collecting box, which is arranged below the cleaning channel and avoids the moving path distribution of the baffle member, and the top opening of the water collecting box is used to receive particles falling from the cleaning channel.

[0017] Optionally, the above-mentioned microwave feed port protection device also includes a guiding mechanism, which includes at least one guiding member and a biasing member, each of the guiding members has an installation cavity and at least one guiding portion, at least one cleaning member is rotatably installed in the installation cavity, the guiding portion is inserted into a guiding channel on the frame, and the biasing members are respectively sleeved on the guiding portions, and the biasing members provide the guiding members with a biasing force to apply toward the barrier member.

[0018] Optionally, in the above-mentioned microwave feed port protection device, the cleaning mechanism further includes a purge member, and a medium outlet of the purge member is arranged toward the outer surface of the baffle member.

[0019] A microwave pyrolysis device, comprising:

[0020] A pyrolysis mechanism having a pyrolysis chamber therein;

[0021] A waveguide, one end of which is connected to the microwave generator, and the other end of which is connected to the pyrolysis cavity;

[0022] The microwave feed port protection device is the microwave feed port protection device mentioned above, and the waveguide is connected to the microwave feed port protection device.

[0023] Optionally, in the above-mentioned microwave pyrolysis equipment, the bottom of the waveguide is inserted into the pyrolysis chamber, and the portion of the waveguide extending into the pyrolysis chamber is provided with a clearance hole connected to the connecting hole for the barrier to pass through.

[0024] Optionally, the microwave pyrolysis device further comprises a cooling mechanism, which is arranged on the waveguide and is located in the waveguide cavity surrounded by the baffle member and the baffle plate.

[0025] The technical solution of the present invention has the following advantages:

[0026] 1. A microwave feed port protection device provided by the present invention comprises a frame and a barrier mechanism: the barrier mechanism comprises a barrier member, part of which is suitable for passing through connecting holes on two opposite side walls of a pyrolysis chamber of a pyrolysis mechanism, and part of which is located outside the pyrolysis chamber; the barrier member is driven by a driving force, and the barrier member reciprocates between the inside and outside of the pyrolysis chamber to bring impurities in the pyrolysis chamber out of the pyrolysis chamber.

[0027] The microwave feed port protection device of this structure is provided with a baffle, which includes a portion located outside the pyrolysis chamber and a portion located inside the pyrolysis chamber, and connecting holes are provided on the two side walls of the pyrolysis chamber, so that the baffle can reciprocate along the two connecting holes, so that the baffle 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 baffle and be taken out of the pyrolysis chamber from the inside to the outside of the pyrolysis chamber by the baffle, so as to prevent the impurity mixture of carbon particles from flowing along the pyrolysis chamber. The impurities can enter the waveguide and adhere to the waveguide, causing damage to the waveguide. In this way, the impurities attached to the baffle can be continuously transferred to the outside of the pyrolysis chamber, so that the microwave feed port 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 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 shut down intermittently and then the waveguide and baffles need to be cleaned and replaced, resulting in low working efficiency of the pyrolysis equipment.

[0028] 2. In the microwave feed port protection device 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 mechanism.

[0029] In the microwave feed port protection device 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 remove the impurity mixture containing carbon particles, thereby effectively protecting the microwave feed port for a long time.

[0030] 3. In the microwave feed port protection device provided by the present invention, 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 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.

[0031] 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.

[0032] 4. In the microwave feed port protection device provided by the present invention, the microwave feed port protection device further includes a cleaning mechanism, the cleaning mechanism includes a cleaning component, the cleaning component has a cleaning channel, and the baffle moves back and forth through the cleaning channel. 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 baffle body, 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.

[0033] 5. The microwave pyrolysis device provided by the present invention includes: a pyrolysis mechanism having a pyrolysis cavity therein; a waveguide, one end of the waveguide is connected to a microwave generator, and the other end is connected to the pyrolysis cavity; a microwave feed protection device, which is the microwave feed protection device described above, and the waveguide is connected to the microwave feed protection device. Since the device adopts the microwave feed protection device described above, any one of the advantages described in the microwave feed protection device described above is realized, and when the microwave pyrolysis device is pyrolyzing the material, the device can protect the waveguide without stopping, so that the waveguide can also be stably operated and used for a long time, and then the microwave can be stably transported to the inside of the pyrolysis cavity, ensuring that sufficient heat is generated for pyrolyzing the material, thereby improving the pyrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 It is a schematic diagram of the structure of the baffle and the waveguide in the prior art;

[0036] Figure 2 It is a schematic diagram of the overall structure of the microwave feed protection device provided in the first embodiment of the present invention;

[0037] Figure 3 for Figure 2 A left view of the overall structure of the microwave feed protection device shown;

[0038] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the middle line AA;

[0039] Figure 5 for Figure 4 An enlarged structural diagram of the cleaning mechanism and the guiding mechanism of the structure at B shown in FIG.

[0040] Figure 6 It is a schematic diagram of the position structure of the roller guide and the pressure roller;

[0041] Figure 7 This is a schematic diagram of the overall structure of a microwave pyrolysis device provided in a second embodiment of the present invention;

[0042] Description of reference numerals:

[0043] 11. First waveguide; 12. Second waveguide;

[0044] 21. barrier member; 22. introduction channel; 222. medium protection layer;

[0045] 3. Microwave generator; 31. Pipeline; 4. Rack;

[0046] 5. barrier mechanism; 51. barrier member; 52. communication hole;

[0047] 6. driving mechanism; 61. driving roller; 62. driven roller; 63. driving member; 64. pressing roller; 65. roller guide member; 651. accommodating chamber; 652. opening;

[0048] 7. Cleaning mechanism; 71. Cleaning channel; 72. Pressing plate; 73. Cleaning parts; 74. Water collecting tank;

[0049] 8. Guide mechanism; 81. Guide member; 82. Biasing member; 83. Mounting cavity; 84. Guide portion;

[0050] 9. Pyrolysis mechanism; 91. Pyrolysis chamber;

[0051] 10. waveguide; 1001. baffle plate; 1002. cooling mechanism. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] 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.

[0055] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0056] Example 1

[0057] This embodiment describes a microwave feed protection device for protecting the waveguide 10 from being attached to and damaged by an impurity mixture containing carbon particles, see Figure 2-Figure 7The protective device includes a frame 4 and a baffle mechanism 5, the baffle mechanism 5 includes a baffle member 51, a portion of the baffle member 51 is suitable for penetrating the connecting holes 52 on the two opposite side walls where the pyrolysis chamber 91 of the pyrolysis mechanism 9 is located, that is, the connecting holes 52 are respectively arranged on the two opposite side walls where the pyrolysis chamber 91 of the pyrolysis mechanism 9 is located, and a portion of the baffle member 51 is suitable for penetrating the connecting holes 52, see Figure 7 Part of the barrier 51 is located outside the pyrolysis chamber 91, and part of the barrier 51 is located inside the pyrolysis chamber 91. The barrier 51 can be driven by a driving force and can reciprocate between the inside and outside of the pyrolysis chamber 91 to bring impurities in the pyrolysis chamber 91 out of the pyrolysis chamber 91.

[0058] By setting a barrier 51, the barrier 51 includes a portion located outside the pyrolysis chamber 91 and inside the pyrolysis chamber 91, and connecting holes 52 are set on the two side walls of the pyrolysis chamber 91, so that the barrier 51 can reciprocate along the two connecting holes 52, so that the barrier 51 can complete the reciprocating movement between the inside of the pyrolysis chamber 91 and the outside of the pyrolysis chamber 91. During the reciprocating movement, the impurity mixture of carbon particles entering the inside of the waveguide 10 along the pyrolysis chamber 91 will adhere to the barrier 51 and be taken out of the inside of the pyrolysis chamber 91 to the outside of the pyrolysis chamber 91 by the barrier 51, so as to prevent the impurity mixture of carbon particles from entering the waveguide along the pyrolysis chamber 91. 10, and adhere to the waveguide 10, causing damage to the waveguide 10, and this method can continuously transfer the impurities attached to the baffle 51 to the outside of the pyrolysis chamber 91, so that the microwave feed port of the waveguide 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 shut down 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 shut down, and then the waveguide 10 and the baffle 51 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.

[0059] Specifically, the barrier 51 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 52, and a portion of the closed loop structure is located outside the pyrolysis chamber 91 of the pyrolysis mechanism 9, wherein the barrier 51 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 52 and perform a reciprocating closed loop motion around the connecting hole 52. The barrier 51 is configured to be a closed loop structure, and the barrier 51 performs a closed loop reciprocating motion along the connecting hole 52, 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.

[0060] Of course, in other optional embodiments, the barrier 51 can also be set to a U-shaped structure, and the two ends of the barrier 51 pass through the connecting holes 52 respectively, and under the action of external force, the two ends of the barrier 51 can make the barrier 51 reciprocate along the connecting hole 52 between the inside and outside of the pyrolysis chamber 91, so as to bring the impurities in the pyrolysis chamber 91 out of the pyrolysis chamber 91.

[0061] Specifically, the above-mentioned connecting hole 52 can be set as a rectangular hole, which is arranged parallel to the width direction of the partition 51 along the axial direction of its length, and can be arranged parallel to the thickness direction of the partition 51 along the axial direction of its width, so that the partition can smoothly reciprocate along the connecting hole. Of course, the connecting hole 52 can also be set in other shapes, which can be adapted to the partition 51 and enable the partition 51 to reciprocate along the connecting hole 52.

[0062] In this embodiment, the driving force source of the barrier belt may be a driving mechanism 6, which is disposed on the frame 4 and includes at least one active roller 61, at least one driven roller 62, and a driving member 63 that drives the active roller 61 to rotate, see Figure 4 The number of active rollers 61 can be set to one, the number of driven rollers 62 can be set to three, the driving member 63 can be a driving motor, the power output end of the driving motor is connected to the roller shaft of the active roller 61, the barrier belt is wound around the outer wall surface of the active roller 61 and the driven roller 62, and under the drive of the driving motor, the active roller 61 is driven to rotate by the driving motor, and then drives the driven roller 62 to rotate to drive the barrier belt to perform a closed loop circulation motion, the driving mechanism 6 is arranged on the frame 4, and can stably drive the barrier belt to rotate, so that the barrier belt can stably convey along the connecting hole 52, and then bring the impurity mixture out of the pyrolysis chamber 91, avoid the impurity mixture from adhering to the waveguide 10, and protect the feed port of the waveguide 10.

[0063] In this embodiment, in order to avoid the problem that microwaves cannot be stably delivered to the pyrolysis chamber 91 due to a large leakage from the connecting hole 52 when the microwaves are delivered to the pyrolysis chamber 91 along the waveguide 10, thereby affecting the pyrolysis efficiency of the materials in the pyrolysis device, see Figure 4 , Figure 6 and Figure 7 The driving mechanism 6 further comprises at least two pressing rollers 64 rotatably disposed on the frame 4 and distributed on the moving path of the barrier belt, wherein the two pressing rollers 64 are respectively located outside a connecting hole 52, and the cross-sections of the bottoms of the two pressing rollers 64 are aligned with the level of the connecting hole 52, so that the conveying surface formed by the barrier belt passing through the connecting hole 52 is suitable to be parallel to the cross-section of the waveguide 10, and the barrier belt plays the role of filling the connecting hole 52.

[0064] Specifically, the pressure roller 64 can be set in the roller guide 65, and the roller guide 65 is set on the pyrolysis equipment corresponding to the connecting hole 52. Each roller guide 65 has a accommodating cavity 651, which has an opening 652. At least one pressure roller 64 is arranged in the accommodating cavity 651. The above-mentioned barrier belt can be transported along the roller surface of the pressure roller 64 to the outside of the opening 652, and then continue to fit with the outer wall surface of the driven roller 62 along the opening 652. The roller guide 65 plays a guiding role, so that the barrier belt can be accurately transported along the driven roller 62. The number of pressure rollers 64 is set according to actual usage requirements.

[0065] In addition, during the barrier belt's conveying movement along the driving mechanism 6, a belt tensioner may be provided on the barrier belt's movement path, and the tensioning force of the barrier belt may be adjusted by the tensioner to prevent the barrier belt from becoming loose.

[0066] In this embodiment, in order to clean the impurity mixture on the barrier belt, the protection device also includes a cleaning mechanism 7, and the cleaning mechanism 7 is arranged on the frame 4. The cleaning mechanism 7 includes a cleaning component, and the cleaning component has a cleaning channel 71. The barrier belt passes through the cleaning channel 71 to reciprocate. When the barrier belt reciprocates along the cleaning channel 71, the cleaning component cleans the barrier belt.

[0067] Specifically, the above-mentioned cleaning component includes a pressure plate 72 and a cleaning member 73. The pressure plate 72 is arranged on the frame 4. The cleaning member 73 is arranged to be distributed relative to the pressure plate 72, and the cleaning member 73 is rotatably arranged on the frame 4. A cleaning channel 71 is formed between the two. The barrier belt can reciprocate along the cleaning channel 71. When passing through the cleaning channel 71, the cleaning member 73 cleans the barrier belt.

[0068] When the cleaning member 73 rotates, the inner surface of the barrier belt in the cleaning channel 71 is subjected to the outward supporting force exerted by the pressure plate 72, and the outer surface of the barrier belt is subjected to the cleaning force exerted by the cleaning member 73. The cleaning member 73 can be set as a brush roller, which can rotate.

[0069] See also Figure 7When 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 71, the barrier belt is subjected to the cleaning force, and the barrier belt body in the cleaning channel 71 will bend. At this time, the pressure plate 72 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 71 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 61 and the driven roller 62 to move and move into the pyrolysis chamber 91, and the impurity mixture is attached to the barrier belt again, so as to circulate.

[0070] In the present embodiment, in order to receive the impurity mixture dropped from the barrier belt, a water collecting tank 74 is further included. The water collecting tank 74 is arranged below the cleaning channel 71 and avoids the moving path distribution of the barrier member 51. The top opening of the water collecting tank 74 is used to receive the particles dropped from the cleaning channel 71. The water collecting tank 74 is arranged on one side of the cleaning member. After the brush roller sweeps the impurity mixture off the barrier member 51, the impurity mixture falls into the water collecting tank 74. Some water or coolant can be placed in the water collecting tank 74. When the impurity mixture is taken out of the pyrolysis chamber 91, the impurity mixture still has some heat. Therefore, after the impurity mixture is swept off the barrier belt and collected in the water collecting tank 74, the water or coolant in the water collecting tank 74 can cool the impurity mixture.

[0071] In addition, in order to enable the cleaning member 73 to stably apply a cleaning force to the barrier strip, a guide mechanism 8 is also included, wherein the guide mechanism 8 includes at least one guide member 81 and a biasing member 82, each of which has an installation cavity 83 and at least one guide portion 84, and at least one cleaning member 73, i.e., a brush roller, is rotatably installed in the installation cavity 83, and the guide portion 84 can be inserted into the guide channel on the frame 4 and can reciprocate along the guide channel, wherein the biasing member 82 is correspondingly mounted on the guide portion 84 one by one, and the biasing member 82 is used to provide the guide member 81 with a biasing force to apply toward the barrier member 51 (i.e., the barrier strip).

[0072] Specifically, the guide member 81 can be set as an installation box, and an opening is set on one side of the installation box facing the outer surface of the barrier belt, and the installation box has an installation cavity 83. A cleaning member 73 is set in the installation box, and the cleaning member 73 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 opening, and the guide shaft serves as a guide portion 84. A guide channel corresponding to the guide shaft is set on the frame 4, and one end of the guide shaft is inserted into the guide channel and can extend out of the guide channel. The biasing member 82 can be set as a spring, and the spring 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 one side of the barrier belt, and then the cleaning member 73 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 the impurity mixture attached to the barrier belt, wherein the number of cleaning members 73 is arranged according to actual use, and can be set to one or two.

[0073] Of course, in other optional embodiments, the cleaning mechanism 7 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 51, wherein the medium outlet can be 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.

[0074] Embodiment 2:

[0075] This embodiment provides a microwave pyrolysis device, see Figure 7 , which includes the microwave feed device provided in Example 1, as well as a pyrolysis mechanism 9 and a waveguide 10, wherein the waveguide 10 is located on the inner surface of the barrier belt of the closed loop structure, and the pyrolysis mechanism 9 has a pyrolysis cavity 91. One end of the waveguide 10 is connected to the microwave generator 3 through a pipeline 31, and the other end is connected to the pyrolysis cavity 91. The microwave generated by the microwave generator 3 can enter the pyrolysis cavity 91 along the cavity of the waveguide 10 to heat the material inside the pyrolysis cavity 91, so that the material undergoes a pyrolysis reaction.

[0076] In the specific setting, the waveguide 10 is connected to the microwave feed protection device, and the bottom of the waveguide 10 can be inserted into the pyrolysis chamber 91. A clearance hole (not shown in the figure) connected to the connecting hole 52 is provided on the part of the waveguide 10 extending into the pyrolysis chamber 91 for the barrier member 51 to pass through. The barrier member 51 can pass through the clearance hole and the connecting hole 52 in turn, and reciprocate along the travel channel formed by the clearance hole and the connecting hole 52. The barrier belt of the closed loop structure can also pass through the travel channel and move around the travel channel. A cleaning mechanism 7 is set on the path of the circulating motion of the barrier belt, and the cleaning mechanism 7 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.

[0077] In this embodiment, a cooling mechanism 1002 and a baffle 1001 are also included. The baffle 1001 is arranged on the waveguide 10 along the cross-sectional direction of the waveguide 10, dividing the waveguide 10 into a first waveguide and a second waveguide, wherein the cooling mechanism 1002 is arranged on the second waveguide, and is located in the waveguide cavity surrounded by the baffle 51 and the baffle 1001, that is, located in the second waveguide. The baffle 1001 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 3 can pass through the baffle 1001 and enter the pyrolysis chamber 91. The baffle 1001 can protect the first waveguide, and the second waveguide will absorb the heat released from the pyrolysis chamber 91. The baffle 1001 can absorb part of the heat to prevent the first waveguide from being too hot.

[0078] Specifically, the second waveguide is cooled by the cooling mechanism 1002 to avoid the temperature at the feed port of the second waveguide being too high, which may affect the operation of the device, thereby ensuring the normal operation of the device. The cooling mechanism 1002 may be a water jacket, in which cold water is circulated. Under the action of the cold water, the heat at the feed port of the second waveguide can be taken away, thereby avoiding the temperature at the feed port of the second waveguide being too high, which may affect the operation of the device, thereby ensuring the normal operation of the device.

[0079] 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 feed protection device, It is characterized in that It comprises a frame (4) and a blocking mechanism (5): The barrier mechanism comprises a barrier member (51), a portion of which is suitable for penetrating through the communicating holes (52) provided on two opposite side walls of the pyrolysis chamber (91) of the pyrolysis mechanism (9), and a portion of which is located outside the pyrolysis chamber (91); the barrier member (51) is driven by a driving force, and the barrier member (51) reciprocates between the inside of the pyrolysis chamber (91) and the outside of the pyrolysis chamber (91), so as to bring impurities in the pyrolysis chamber (91) out of the pyrolysis chamber (91); The communicating hole (52) is configured as a rectangular hole, and is arranged parallel to the width direction of the barrier member (51) along the axial direction of its length, and is arranged parallel to the thickness direction of the barrier member (51) along the axial direction of its width.

2. The microwave feed protection device according to claim 1, It is characterized in that The barrier member (51) is in a closed loop structure, a portion of the closed loop structure is suitable for being inserted into the connecting hole (52), and a portion of the closed loop structure is located outside the pyrolysis mechanism (9).

3. The microwave feed protection device according to claim 2, It is characterized in that The closed loop structure is a barrier strip of a closed loop; The invention also comprises a driving mechanism (6), wherein the driving mechanism (6) is arranged on the frame (4), and comprises at least one active roller (61), at least one driven roller (62) and a driving member (63) for driving the active roller (61) to rotate; the barrier belt is wound around the outer wall surfaces of the active roller (61) and the driven roller (62); under the drive of the driving member (63), the active roller (61) and the driven roller (62) rotate to drive the barrier belt to perform a closed loop circulation motion.

4. The microwave feed protection device according to claim 3, It is characterized in that The driving mechanism (6) further comprises at least two pressing rollers (64) rotatably arranged on the frame (4) and distributed on the moving path of the barrier belt, wherein the two pressing rollers (64) are respectively located outside a connecting hole (52), and the cross-sections of the bottoms of the two pressing rollers (64) are aligned with the level of the connecting hole (52), so that the conveying surface formed by the barrier belt passing through the connecting hole (52) is suitable to be parallel to the cross-section of the waveguide (10).

5. The microwave feed protection device according to claim 4, It is characterized in that It also includes a roller guide (65) which is arranged on the pyrolysis mechanism corresponding to the connecting hole (52). Each of the roller guides (65) has a receiving cavity (651) having an opening (652). At least one pressure roller (64) is arranged in the receiving cavity (651). The barrier belt is transported along the roller surface of the pressure roller (64) to the outside of the opening (652).

6. The microwave feed protection device according to any one of claims 1 to 4, It is characterized in that It also comprises a cleaning mechanism (7), wherein the cleaning mechanism (7) comprises a cleaning component, wherein the cleaning component has a cleaning channel (71), and the barrier (51) passes through the cleaning channel (71) to perform reciprocating motion.

7. The microwave feed protection device according to claim 6, It is characterized in that The cleaning assembly comprises a pressing plate (72) and at least one cleaning member (73), wherein the pressing plate (72) is arranged on the frame (4), and the cleaning member (73) is arranged on the frame (4) in a manner that is rotatable and arranged relative to the pressing plate (72), and the cleaning channel (71) is formed between the two. When the cleaning member (73) rotates, the inner surface of the baffle member (51) located in the cleaning channel (71) is subjected to an outward supporting force exerted by the pressure plate (72), and the outer surface of the baffle member (51) is subjected to a cleaning force exerted by the cleaning member (73).

8. The microwave feed protection device according to claim 6, It is characterized in that The cleaning mechanism (7) further comprises a water collecting box (74), which is arranged below the cleaning channel (71) and avoids the moving path distribution of the baffle (51), and the top opening of the water collecting box (74) is used to receive particles falling from the cleaning channel (71).

9. The microwave feed protection device according to claim 7, It is characterized in that The invention also comprises a guide mechanism (8), wherein the guide mechanism (8) comprises at least one guide member (81) and a biasing member (82), each of the guide members (81) having a mounting cavity (83) and at least one guide portion (84), at least one cleaning member (73) being rotatably mounted in the mounting cavity (83), the guide portion (84) being inserted into a guide channel on the frame (4), the biasing members (82) being sleeved on the guide portions (84) in a one-to-one correspondence, and the biasing members (82) applying a biasing force to the guide members (81) to move closer to the barrier member (51).

10. The microwave feed protection device according to claim 9, It is characterized in that The cleaning mechanism (7) further comprises a blowing member, wherein a medium outlet of the blowing member is arranged toward the outer surface of the baffle (51).

11. A microwave pyrolysis device, It is characterized in that include: A pyrolysis mechanism (9) having a pyrolysis chamber (91) therein; a waveguide (10), one end of the waveguide (10) being connected to the microwave generator (3), and the other end of the waveguide (10) being connected to the pyrolysis chamber (91); The microwave feed protection device is the microwave feed protection device according to any one of claims 1 to 10, and the waveguide (10) is connected to the microwave feed protection device.

12. The microwave pyrolysis device according to claim 11, It is characterized in that The bottom of the waveguide (10) is inserted into the pyrolysis chamber (91), and a clearance hole connected to the connecting hole (52) is provided on the portion of the waveguide (10) extending into the pyrolysis chamber (91) to allow the barrier (51) to pass through.

13. The microwave pyrolysis device according to claim 11 or 12, It is characterized in that It also comprises a cooling mechanism (1002), wherein the cooling mechanism (1002) is arranged on the waveguide (10) and is located in the waveguide cavity surrounded by the baffle (51) and the baffle plate (1001).

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