Quick assembly and disassembly structure for nozzle of coal water slurry gasification furnace

Abstract

A quick assembly and disassembly structure for a nozzle of a coal water slurry gasification furnace comprises two fixing parts, two inserting parts, a bearing part, a clamping mechanism, the nozzle and a feeding mechanism, an inserting hole communicated with a furnace cavity is formed in the circumferential side furnace wall of the coal water slurry gasification furnace, the two fixing parts are fixedly combined to the two sides of the inserting hole, and sliding cavities are formed in the two fixing parts; a loading and unloading opening is formed in one side of the fixing part, the two inserting parts are fixedly combined on the bearing part, clamping mechanisms are arranged on the inserting parts, the nozzles are fixedly arranged on the bearing part corresponding to the inserting holes, and the feeding mechanism is arranged on the bearing part and communicated with the nozzles. And the fixing part and the inserting part are combined and fixed through the clamping mechanism, so that the spray head of the nozzle is inserted into the furnace cavity through the inserting hole, and the feeding mechanism feeds materials into the furnace cavity through the nozzle. Therefore, the nozzle can be quickly mounted and dismounted, so that the nozzle can be conveniently repaired and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of water-coal slurry gasifiers, in particular to a quick assembly and disassembly structure of a nozzle of a water-coal slurry gasifier. Background Art

[0002] A water-coal slurry gasifier, also known as a Texaco coal gasifier, is an industrial furnace that produces raw coal gas using water-coal slurry as a raw material. During operation, a water-coal slurry gasifier uses a nozzle to spray liquid fuel into tiny fragments to facilitate the conversion of the liquid fuel into gaseous fuel. However, in actual production, existing gasifier nozzle structures commonly suffer from the following deficiencies: The nozzle is essentially an integrated structure with the gasifier, meaning the nozzle is fixed to the gasifier, making both disassembly and installation very cumbersome. Furthermore, during actual use, the nozzle draws in external air, and impurities in the air can affect the conversion of the liquid fuel. Therefore, a filter is installed in the nozzle. After long-term use, the filter becomes contaminated with impurities, affecting the filtration efficiency and the patency of the channel. This necessitates filter replacement or nozzle maintenance (cleaning impurities from the internal filter). However, the integrated nozzle-to-gasifier structure significantly inconveniences nozzle maintenance and filter replacement, increasing the difficulty and cost of maintenance. Therefore, how to make the nozzle of the water-coal slurry gasifier easy to disassemble, assemble and maintain has become one of the technical problems to be solved urgently in this field. Utility Model Content

[0003] The technical problem to be solved by this technical solution is how to make the nozzle of the water-coal slurry gasifier easy to disassemble, assemble and maintain, so as to reduce the maintenance difficulty of the staff and reduce the corresponding maintenance costs.

[0004] In order to solve the above technical problems, the present technical solution provides a quick assembly and disassembly structure for a water-coal slurry gasification furnace nozzle, which is arranged on the outer side of the peripheral furnace wall of the water-coal slurry gasification furnace, and the peripheral furnace wall is provided with an insertion hole communicating with the furnace cavity inside the water-coal slurry gasification furnace. The quick assembly and disassembly structure includes: two fixing parts, two insertion parts, a bearing part, a locking mechanism, a nozzle and a feeding mechanism, wherein the two fixing parts are located on both sides of the insertion hole and are fixedly combined with the outer side in parallel with each other, the interior of the fixing part has a sliding cavity, and the side of the fixing part away from the outer side is provided with a sliding cavity. A loading and unloading port communicating with the sliding cavity is provided, the two insertion parts are fixedly combined on the bearing part corresponding to the two sliding cavities, a locking mechanism is provided on the two insertion parts, the nozzle is located between the two insertion parts and is fixedly provided on the bearing part corresponding to the insertion hole, the feeding mechanism is provided on the bearing part and communicated with the nozzle, the two insertion parts are inserted into the two sliding cavities through the two loading and unloading ports, and the fixing part is fixed to the insertion part through the locking mechanism, so that the nozzle head of the nozzle is inserted into the furnace cavity through the insertion hole, and the feeding mechanism feeds into the furnace cavity through the nozzle. Accordingly, by means of quick insertion and separation of the insertion portion and the fixed portion, and further fixing or releasing the fixing of the engaging mechanism, the nozzle and the feeding mechanism can be simply and quickly fixedly coupled to the water-coal slurry gasification furnace through the bearing portion and the nozzle can be inserted into the furnace cavity through the insertion hole to perform feeding operations, or the bearing portion together with the nozzle and the feeding mechanism can be removed from the fixed portion to repair or maintain the nozzle or the feeding mechanism, thereby eliminating the complicated process of disassembling and assembling the existing nozzle structure, reducing the difficulty of loading and unloading the nozzle structure, not only saving time and effort, but also reducing the corresponding repair and maintenance costs.

[0005] As another implementation of the present technical solution, the locking mechanism is mainly composed of two connecting rods, two clamping blocks, and two coil springs, wherein the two side surfaces away from the two insertion parts are recessed to form an embedding groove, and the interior of the insertion part is formed with a movable cavity at a position corresponding to the embedding groove, and a movable hole communicating with the movable cavity is provided at the bottom of the embedding groove. The connecting rod is movably inserted into the movable hole, and one end of the connecting rod located in the movable cavity has a limit block with a diameter larger than the aperture of the movable hole, and the other end of the connecting rod is fixedly combined with the clamping block, and the coil spring is sleeved on the connecting rod. The two sides of the two fixing parts, which are separated from each other, are provided with two bayonet holes corresponding to the two fixing parts. When installing the nozzle, the two fixing parts are pressed into the mounting groove, and the two insertion parts are inserted into the two sliding cavities through the two loading and unloading openings. When the fixing parts are aligned with the bayonet holes, the coil spring pushes the fixing parts into the bayonet holes to fix them together. When removing the nozzle, the two fixing parts are pressed into the mounting groove to release the fixing parts from the bayonet holes, and then the two insertion parts are pulled out of the two sliding cavities. In this way, the fixing part and the insertion part can be quickly fixed, released, or separated.

[0006] In another embodiment of this technical solution, a tubular sleeve portion is formed on the edge of the movable hole, extending toward the locking block. The connecting rod is movably inserted into the sleeve portion and the movable hole. One end of the coil spring is sleeved within the sleeve portion and abuts against the bottom of the embedding groove, while the other end of the coil spring is sleeved within the connecting rod and abuts against the locking block. Thus, the sleeve portion can assist in limiting the movement of the connecting rod and can help bear the lateral force exerted by the connecting rod, thereby protecting the connecting rod from deformation.

[0007] As another embodiment of this technical solution, two parallel protrusions are formed on the opposing side surfaces of the two insertion portions. A portion of the movable cavity is located within the protrusions, and the cross-sectional shape of the sliding cavity corresponds to the cross-sectional shape of the insertion portion. Accordingly, the provision of the protrusions not only enhances the structural strength of the connection between the insertion portion and the fixed portion, but also increases the travel range of the connecting rod and the clamping block in the locking mechanism, thereby facilitating the configuration of the locking mechanism.

[0008] As another embodiment of the present technical solution, the quick assembly and disassembly structure further includes: a connecting reinforcement portion, which is composed of a collar and two reinforcing rods, wherein the collar is mounted on the nozzle, and the two reinforcing rods are arranged horizontally and on the same straight line, with the opposite ends of the two reinforcing rods fixedly coupled to the two sides of the collar, and the ends of the two reinforcing rods separated from each other are fixedly coupled to the two protrusions, and the two opposite side surfaces of the two fixed portions are corresponding to the two reinforcing rods and are provided with two sliding openings that communicate with the sliding cavity and the loading and unloading opening, and the reinforcing rods can move within the sliding openings. Accordingly, the provision of the connecting reinforcement portion can effectively enhance the structural strength of the nozzle and the insertion portion.

[0009] As another implementation of this technical solution, the nozzle is a multi-channel nozzle and is composed of a coaxial sleeve of multiple conduits with sequentially increasing diameters. The nozzle's feed end is fixedly mounted on the side of the support unit facing the surrounding furnace wall. The feeding mechanism is primarily composed of an air pump and several feed pipes. The air pump is mounted on the side of the support unit away from the surrounding furnace wall, and the air pump's output is connected to the high-pressure air channel at the nozzle's feed end. The several feed pipes are mounted on the support unit and respectively connected to the several material channels at the nozzle's feed end. Accordingly, the nozzle can be configured to supply different materials into the furnace chamber in stages, depending on the application process of the water-coal slurry gasifier.

[0010] As another embodiment of this technical solution, the feed mechanism further includes a filter. A recessed mounting chamber with an opening is formed on the side of the support portion, away from the peripheral furnace wall. The air pump is mounted within the mounting chamber, with its input end also located within the chamber. The filter is secured to the opening. This allows the air entering the air pump to be filtered, improving the quality of the air entering the high-pressure air passage at the nozzle feed end, thereby extending the nozzle's maintenance cycle.

[0011] As another embodiment of this technical solution, two mounting openings are respectively formed on the side surfaces of the support portion on both sides of the opening, and two latch openings are respectively formed on both sides of the support portion, which communicate with the two mounting openings. Two insertion portions are respectively formed on both sides of the filter corresponding to the two mounting openings. The two insertion portions are inserted into the two mounting openings, and two latches are respectively inserted into the two latch openings and penetrate the two insertion portions to secure the filter to the opening. In this way, the filter can be quickly and easily installed or removed.

[0012] In another embodiment of this technical solution, the insertion hole is provided in the circumferential furnace wall, either horizontally, downwardly inclined, or upwardly inclined, with the axial direction of the nozzle aligned with the axial direction of the insertion hole and the direction of movement during nozzle installation and removal. Accordingly, depending on the type of water-coal slurry gasifier, the nozzle can be inserted into the furnace chamber at different angles to meet production process requirements.

[0013] As another embodiment of this technical solution, an annular high-temperature resistant sealing ring is provided at the edge of the insertion hole on the outer side of the peripheral furnace wall, thereby ensuring that the process pressure in the furnace cavity is not affected by the quick assembly and disassembly structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the quick loading and unloading structure of the utility model being arranged on the peripheral wall of a water-coal slurry gasification furnace;

[0015] Figure 2 It is a schematic diagram of a specific embodiment of the quick assembly and disassembly structure of the utility model;

[0016] Figure 3 This is a schematic diagram of another specific embodiment of the quick assembly and disassembly structure of the present utility model;

[0017] Figure 4 This is a schematic diagram of the quick assembly and disassembly structure of the present invention from another angle.

[0018] Description of symbols in the accompanying drawings:

[0019] 1 Coal-water slurry gasifier; 2 Fixing portion; 21 Clamping hole; 22 Sliding opening; 3 Inserting portion; 31 Embedding groove; 32 Sleeving portion; 33 Protruding portion; 4 Bearing portion; 41 Installation chamber; 42 Installation opening; 5 Engaging mechanism; 51 Connecting rod; 52 Block; 53 Coil spring; 6 Nozzle; 7 Feeding mechanism; 71 Air pump; 72 Feeding pipe; 73 Filter; 8 Connecting reinforcement portion; 81 Ring; 82 Reinforcement rod; 9 Pin. DETAILED DESCRIPTION

[0020] The detailed description and technical contents of the present invention are described below with reference to the accompanying drawings. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

[0021] In the context of this specification, any two or more embodiments of the present invention can be arbitrarily combined, and the technical solutions thus formed belong to part of the original disclosure of this specification and also fall within the scope of protection of the present invention.

[0022] like Figure 1 and 2The figure shows a schematic diagram of a specific embodiment of the quick-loading and unloading structure of the nozzle of the water-coal slurry gasification furnace of the present invention. The quick-loading and unloading structure of the nozzle of the water-coal slurry gasification furnace provided by the present invention (hereinafter referred to as the quick-loading and unloading structure) is arranged on the outer side of the peripheral furnace wall of the water-coal slurry gasification furnace 1. The peripheral furnace wall is provided with an insertion hole (not shown) that communicates with the furnace cavity (not shown) inside the water-coal slurry gasification furnace 1. The quick-loading and unloading structure includes two fixing parts 2, two insertion parts 3, a supporting part 4, a locking mechanism 5, a nozzle 6 and a feeding mechanism 7. The two fixing parts 2 are located on both sides of the insertion hole and are fixedly coupled to the outer side of the peripheral furnace wall in parallel with each other. The interior of the fixing part 2 has a sliding cavity (not shown), and the side of the fixing part 2 away from the outer side of the peripheral furnace wall is provided with a loading and unloading port (not shown) that communicates with the sliding cavity. The two insertion parts 3 are fixedly coupled to the supporting part 4 corresponding to the two sliding cavities, and the two insertion parts 3 are provided with a locking mechanism 5. The nozzle 6 is located between the two insertion parts 3 and is fixedly arranged on the supporting part 4 corresponding to the insertion hole. The feeding mechanism 7 is also arranged on the supporting part 4 and is connected to the nozzle 6. When in use, the quick loading and unloading structure is achieved by inserting the two insertion parts 3 into the two sliding cavities through the two loading and unloading ports, and combining and fixing the fixing part 2 with the insertion part 3 through the locking mechanism 5, so that the nozzle head of the nozzle 6 is inserted into the furnace cavity through the insertion hole, and the feeding mechanism 7 feeds into the furnace cavity through the nozzle 6. In order to meet the process requirements of different types of water-coal slurry gasification furnaces 1 for various angles of insertion of the nozzle 6 into the furnace cavity, the insertion hole can be horizontal, downwardly inclined or upwardly inclined and opened on the peripheral furnace wall, and the axial direction of the nozzle 6 is consistent with the axial direction of the insertion hole and the loading and unloading movement direction of the nozzle 6. In addition, the process environment in the furnace chamber of the water-coal slurry gasifier 1 during production and use has a certain pressure. In order to ensure that the quick assembly and disassembly structure of the present invention does not affect the process environment, an annular high-temperature resistant sealing ring (not shown in the figure) is also provided at the edge of the hole of the insertion hole on the outer side of the peripheral furnace wall. When the nozzle 6 is inserted into the insertion hole, the annular high-temperature resistant sealing ring will form a tight seal with the peripheral side of the nozzle 6 to ensure that the pressure in the furnace chamber of the water-coal slurry gasifier 1 will not be released due to a loose seal during use, and it can also ensure that the raw coal gas generated during the production of the water-coal slurry gasifier will not leak out due to a loose seal. In addition, because the furnace shell of the water-coal slurry gasifier 1 is covered with an insulating furnace lining (not shown in the figure), the temperature of the furnace shell is not high. Therefore, the annular high-temperature resistant sealing ring provided on the outer side of the peripheral furnace wall will not be affected by the high temperature and shorten its service life.

[0023] Specifically, the locking mechanism 5 of the present invention is primarily composed of two connecting rods 51, two clamping blocks 52, and two coil springs 53. The two distal side surfaces of the two insertion portions 3 are each recessed to form an embedding groove 31. A movable cavity (not shown) is formed within the insertion portion 3 at a position corresponding to the embedding groove 31. The bottom of the embedding groove 31 defines a movable hole (not shown) communicating with the movable cavity. The connecting rod 51 is movably inserted into the movable hole. One end of the connecting rod 51 located within the movable cavity has a stopper (not shown) with a diameter larger than the diameter of the movable hole. The other end of the connecting rod 51 is fixedly engaged with the clamping block 52. The coil spring 53 is sleeved on the connecting rod 51 and located between the clamping block 52 and the bottom of the embedding groove 31. The two distal side surfaces of the two fixing portions 2 define two latching openings 21 corresponding to the two clamping blocks 52. When installing the nozzle 6, the two clamping blocks 52 are pressed into the embedding groove 31, and the two insertion parts 3 are inserted into the two sliding cavities through the two loading and unloading ports. When the clamping blocks 52 are aligned with the bayonet 21, the coil spring 53 pushes against the clamping blocks 52 and is embedded in the bayonet 21 to combine and fix the fixing part 2 and the insertion part 3; when removing the nozzle 6, the two clamping blocks 52 are pressed into the embedding groove 31 to disengage the clamping blocks 52 from the limit of the bayonet 21, and then the two insertion parts 3 are pulled out from the two sliding cavities. Furthermore, the edge of the movable hole can also extend toward the block 52 to form a tubular sleeve portion 32, and the connecting rod 51 is movably inserted into the sleeve portion 32 and the movable hole, and one end of the coil spring 53 is sleeved on the sleeve portion 32 and abuts against the bottom of the embedding groove 31, and the other end of the coil spring 53 is sleeved on the connecting rod 51 and abuts against the block 52. The sleeve portion 32 can form an auxiliary limiting movement for the connecting rod 51 and can assist in bearing the lateral force applied by the connecting rod 51, thereby protecting the connecting rod 51 from deformation. Furthermore, the two opposite sides of the two insertion parts 3 can also protrude to form two protrusions 33 parallel to each other, a part of the movable cavity is located in the protrusion 33, and the cross-sectional shape of the sliding cavity corresponds to the cross-sectional shape of the insertion part 3. The setting of the protrusion 33 can not only enhance the structural strength of the combination of the insertion part 3 and the fixed part 2, but also increase the moving stroke of the connecting rod 51 and the block 52 in the locking mechanism 5, thereby facilitating the setting of the locking mechanism 5.

[0024] Combine Figure 3As shown, as another embodiment of the present invention, the quick loading and unloading structure may further include a connection reinforcement portion 8, which is composed of a collar 81 and two reinforcement rods 82, wherein the collar 81 is sleeved on the nozzle 6, and may be fixedly combined with the circumference of the nozzle 6, but may not be combined with the nozzle 6, and the two reinforcement rods 82 are arranged horizontally and on the same straight line, and the opposite ends of the two reinforcement rods 82 are respectively fixedly combined with the two sides of the collar 81, and the ends of the two reinforcement rods 82 that are away from each other are respectively fixedly combined with the two protrusions 33. The two opposite side surfaces of the two fixing parts 2 correspond to the two reinforcement rods 82 and are provided with two sliding openings 22 that are connected to the sliding cavity and the loading and unloading opening, and the reinforcement rods 82 can move in the sliding openings 22. The provision of the connection reinforcement portion 8 can effectively strengthen the installation structural strength of the nozzle 6 and the insertion portion 3, wherein the structural reinforcement effect of the collar 81 combined with the circumference of the nozzle 6 is the best.

[0025] The nozzle in the present invention is a multi-channel nozzle, which is composed of a plurality of conduits with successively larger diameters coaxially arranged. The shape of the nozzle can be cylindrical or conical. Multi-channel nozzles are widely used in existing water-coal slurry gasification furnaces. The present invention only applies the nozzle of the existing structure, but does not improve the nozzle structure. Therefore, the specific structure of the nozzle will not be described in detail. The feed end of the nozzle (not shown in the figure) is fixedly arranged on the side of the bearing part facing the circumferential furnace wall. Figure 4 As shown, the feeding mechanism 7 is mainly composed of an air pump 71 and several feeding pipes 72, wherein the air pump 71 is installed on the side of the supporting part 4 away from the peripheral furnace wall, and the output end of the air pump 71 (not shown in the figure) is connected to the high-pressure air channel (usually the middle channel) of the feeding end of the nozzle 6, and the several feeding pipes 72 (two feeding pipes are shown in the figure, and more than two feeding pipes can be set in actual application) are arranged on the supporting part 4 and are respectively connected to the several material channels of the feeding end of the nozzle 6, so that the nozzle 6 can supply different materials into the furnace cavity step by step according to the application process of the water-coal slurry gasifier 1.

[0026] Combine Figure 1 and 4As shown, in the present invention, the feeding mechanism 7 may also include a filter 73. A recessed mounting chamber 41 with an opening is formed on the side of the supporting portion 4, away from the surrounding furnace wall. The air pump 71 is installed in the mounting chamber 41, and its input end (not shown) is also located in the mounting chamber 41. The filter 73 is fixed to the opening to filter the air entering the air pump 71, thereby improving the quality of the air entering the high-pressure air channel at the feed end of the nozzle 6, thereby extending the maintenance cycle of the nozzle 6. Furthermore, two mounting openings 42 can be respectively provided on the side surfaces of the load-bearing portion 4 on both sides of the opening, and two latch openings (not shown in the figure) connected to the two mounting openings 42 are respectively provided on both sides of the load-bearing portion 4. The filter screen 73 has two insertion portions (not shown in the figure) corresponding to the two mounting openings 42 on both sides. The two insertion portions are inserted into the two mounting openings 42, and two latches 9 are respectively inserted into the two latch openings and penetrated through the two insertion portions to fix the filter screen 73 to the opening, so that the filter screen 73 can be quickly and easily installed or removed.

[0027] The quick assembly and disassembly structure of the present invention is operated during the period when the water-coal slurry gasifier is out of use when being installed or disassembled. Through the quick assembly and separation of the insertion part and the fixing part, and the further fixing or releasing of the locking mechanism, the nozzle and the feeding mechanism can be simply and quickly fixed to the water-coal slurry gasifier through the bearing part and the nozzle can be inserted into the furnace cavity through the insertion hole to perform the feeding operation, or the bearing part together with the nozzle and the feeding mechanism can be removed from the fixing part to repair or maintain the nozzle or the feeding mechanism, thereby eliminating the complicated process of disassembling and assembling the existing nozzle structure, reducing the difficulty of assembly and disassembly of the nozzle structure, not only saving time and effort, but also reducing the corresponding repair and maintenance costs.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Other equivalent changes made using the patent concept of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A quick assembly and disassembly structure for a water-coal slurry gasification furnace nozzle, arranged on the outer side of the peripheral furnace wall of the water-coal slurry gasification furnace, characterized in that: The circumferential furnace wall is provided with an insertion hole that communicates with the furnace chamber inside the water-coal slurry gasification furnace, and the quick loading and unloading structure includes: two fixing parts, two insertion parts, a bearing part, a clamping mechanism, a nozzle and a feeding mechanism, the two fixing parts are located on both sides of the insertion hole and are fixedly combined with the outer side surface in parallel with each other, the interior of the fixed part is provided with a sliding cavity, and a loading and unloading port that communicates with the sliding cavity is provided on the side of the fixed part away from the outer side surface, the two insertion parts correspond to the two sliding cavities and are fixedly combined on the bearing part, the clamping mechanism is provided on the two insertion parts, and the nozzle is located between the two insertion parts and corresponds to the The two cams are connected by a threaded connection to the top of the support frame, and the two cams are connected by a threaded connection to the support frame, and the two cams are connected by a threaded connection to the support frame. The cam is provided with a movable cavity, the bottom of the embedding groove is provided with a movable hole communicating with the movable cavity, the connecting rod is movably inserted into the movable hole, one end of the connecting rod located in the movable cavity has a limit block with a diameter larger than the aperture of the movable hole, the other end of the connecting rod is fixedly combined with the clamping block, the coil spring is sleeved on the connecting rod and is located between the clamping block and the bottom of the embedding groove, the two side surfaces away from the two fixing parts are provided with two bayonet holes corresponding to the two clamping blocks, when the nozzle is installed, the two clamping blocks are pressed into the embedding groove, and the two inserting parts are inserted into the two sliding holes through the two loading and unloading ports. The cam is mounted on a cam face and is adapted to engage with the locking member when the cam face is engaged with the locking member and the locking member is engaged with the locking member.

2. The quick assembly and disassembly structure according to claim 1, characterized in that: Two opposite side surfaces of the two inserting parts are protruded to form two protrusions parallel to each other, a part of the movable cavity is located in the protrusions, and the cross-sectional shape of the sliding cavity corresponds to the cross-sectional shape of the inserting parts.

3. The quick assembly and disassembly structure according to claim 2, characterized in that: Also includes: The connecting reinforcement part is composed of a ring and two reinforcement rods. The ring is mounted on the nozzle. The two reinforcement rods are arranged horizontally and are on the same straight line. The opposite ends of the two reinforcement rods are respectively fixedly combined with the two sides of the ring. The ends of the two reinforcement rods away from each other are respectively fixedly combined with the two protrusions. The two opposite side surfaces of the two fixed parts correspond to the two reinforcement rods and are provided with two sliding openings connected to the sliding cavity and the loading and unloading port. The reinforcement rod can move in the sliding opening.

4. The quick assembly and disassembly structure according to claim 1, characterized in that: The nozzle is a multi-channel nozzle and is composed of a plurality of conduits with successively increasing diameters that are coaxially sleeved. The feed end of the nozzle is fixedly arranged on the side of the bearing portion facing the peripheral furnace wall. The feeding mechanism is mainly composed of an air pump and several feed pipes. The air pump is installed on the side of the bearing portion away from the peripheral furnace wall, and the output end of the air pump is connected to the high-pressure air channel of the feed end. The several feed pipes are arranged on the bearing portion and are respectively connected to several material channels of the feed end.

5. The quick assembly and disassembly structure according to claim 4, characterized in that: The feeding mechanism also includes: a filter screen, the side of the supporting part away from the peripheral furnace wall is recessed to form an installation chamber with an opening, the air pump is installed in the installation chamber and its input end is also located in the installation chamber, and the filter screen cover is fixed to the opening.

6. The quick assembly and disassembly structure according to claim 5, characterized in that: Two mounting openings are respectively provided on the side surfaces of the bearing portion on both sides of the opening, and two latch openings connected to the two mounting openings are respectively provided on both sides of the bearing portion. Two insertion portions are provided on both sides of the filter net corresponding to the two mounting openings. The two insertion portions are inserted into the two mounting openings, and two latches are respectively inserted into the two latch openings and penetrate the two insertion portions to fix the filter net to the opening.

7. The quick assembly and disassembly structure according to claim 1, characterized in that: The insertion hole is opened in the peripheral furnace wall in a horizontal direction, a downward tilt or an upward tilt, and the axial direction of the nozzle is consistent with the axial direction of the insertion hole and the loading and unloading movement direction of the nozzle.

8. The quick assembly and disassembly structure according to claim 1, characterized in that: An annular high-temperature resistant sealing ring is provided on the edge of the insertion hole on the outer side surface.

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