Ammonia decomposition brazing furnace

Abstract

The invention relates to the technical field of brazing, and discloses an ammonia decomposition brazing furnace which comprises a brazing table, a heat source furnace is fixedly mounted above the brazing table, a brazing chamber is fixedly mounted above the heat source furnace, a plurality of heating rods are arranged in the heat source furnace, one part of each heating rod is inserted into the brazing chamber, and the other part of each heating rod is inserted into the brazing chamber. Reaction chambers are symmetrically and fixedly installed in the brazing chamber, catalytic decomposition columns are rotationally connected to the inner walls of the reaction chambers, a plurality of corrugated pipes are hinged to the bottoms of the two reaction chambers in a communicating mode, gas spraying pipes are fixedly connected to the lower portions of the corrugated pipes, and swing assemblies for driving the gas spraying pipes to swing are arranged on one sides of the gas spraying pipes. According to the technical scheme, the multiple gas spraying pipes on the two sides swing back and forth, in the swing process, the outlet ends of the gas spraying pipes can continuously face different brazed products, hydrogen can act on the surfaces of all the metal connection products more evenly, it can be guaranteed that all the brazed positions can obtain enough heat and protective gas, and the welding quality is improved. Therefore, the brazing quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of brazing, and in particular relates to an ammonia decomposition brazing furnace. Background Art

[0002] Brazing is a common welding method that uses non-fused metal brazing filler metal to fill the joints of the connecting materials and forms a connection through the liquefaction and solidification of the brazing filler metal. The ammonia decomposition brazing furnace is a special brazing equipment. Its working principle mainly includes the decomposition of ammonia, the generation of hydrogen and the connection of metals.

[0003] Ammonia decomposition brazing furnace is a commonly used brazing equipment, which is widely used in the connection of various metal materials. It decomposes ammonia to generate hydrogen and nitrogen, and then uses hydrogen as brazing material to achieve metal connection and sealing. This brazing method can not only ensure the high strength of the connection part, but also reduce oxidation and pollution, thereby improving the quality and efficiency of brazing.

[0004] When multiple metal connection products are transported to the interior of the brazing furnace, it is difficult for hydrogen to evenly act on the surfaces of each metal connection product, resulting in insufficient heat and protective gas at some brazing positions, thereby affecting the brazing quality.

[0005] To this end, the present invention provides an ammonia decomposition brazing furnace. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art: solve at least one technical problem raised in the background technology.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an ammonia decomposition brazing furnace described in the present invention comprises a brazing table, a heat source furnace is fixedly installed above the brazing table, a brazing chamber is fixedly installed above the heat source furnace, a plurality of heating rods are arranged inside the heat source furnace, a part of the heating rods is inserted into the brazing chamber, a reaction chamber is symmetrically fixedly installed inside the brazing chamber, a catalytic decomposition column is rotatably connected to the inner wall of the reaction chamber, a plurality of bellows are hingedly connected at the bottom of the two reaction chambers, and a gas injection pipe is fixedly connected below the bellows, a conveying assembly for conveying the brazing product is arranged outside the brazing chamber, a driving assembly for driving the catalytic decomposition column to rotate is arranged on one side of the catalytic decomposition column, and a swinging assembly for driving the gas injection pipe to swing is arranged on one side of the gas injection pipe.

[0008] Preferably, the conveying assembly includes two driving wheels, the connecting seats of the two driving wheels are fixedly installed on the top of the brazing table, a conveyor belt is transmission-connected between the outer walls of the two driving wheels, a preheating furnace is fixedly installed on the top of the brazing table, a feed bin and a discharge bin are fixedly connected on both sides of the brazing chamber, and the conveyor belt continuously passes through the interior of the preheating furnace, the feed bin, the brazing chamber and the discharge bin.

[0009] Preferably, an ammonia tank is fixedly installed on one side of the soldering station. The top of the ammonia tank is symmetrically and fixedly communicated with intake pipes. Air extraction pumps are arranged on the outer parts of the intake pipes. The ends of the intake pipes far from the ammonia tank are fixedly communicated with conveying boxes. The two conveying boxes are fixedly installed inside the soldering chamber. The conveying boxes are U-shaped. The ends of the conveying boxes far from the intake pipes are fixedly communicated with air outlet funnels. The outer walls of the air outlet funnels are inserted into the top of the reaction chamber. The bottom opening ends of the air outlet funnels are located directly above the catalytic decomposition columns.

[0010] Preferably, the driving assembly includes a motor. The output shaft of the motor is fixedly connected with a transmission ring. One side of each of the two catalytic decomposition columns is fixedly connected with a rotating rod. The rotating rods are rotationally connected to the side walls of the reaction chamber and the soldering chamber. One end of each of the two rotating rods is fixedly connected with a transmission ring. A transmission belt is connected in transmission between the outer walls of the two transmission rings.

[0011] Preferably, air collecting plates are symmetrically and fixedly connected to the top of the inner wall of the reaction chamber. The ends of the two air collecting plates far from the reaction chamber are attached to the outer walls of the catalytic decomposition columns.

[0012] Preferably, the swinging assembly includes two clamping connecting rods. The inner walls of the two clamping connecting rods are respectively fixedly connected to the outer walls of two groups of spray pipes. The ends of the two clamping connecting rods far from the spray pipes are fixedly connected with pressing round blocks. Above the pressing round blocks, there is a pressing assembly for driving the two pressing round blocks to move away from or close to each other.

[0013] Preferably, the pressing assembly includes an inverted triangular plate. The two inclined surfaces at the bottom of the inverted triangular plate are respectively attached to the outer walls of the two pressing round blocks. One side of the inverted triangular plate is fixedly connected with a lifting block. The outer wall of the lifting block is slidably connected with a fixed sliding seat. An elevating assembly is arranged above the inverted triangular plate.

[0014] Preferably, rack plates are symmetrically and fixedly connected to the top of the inverted triangular plate. The teeth of the two rack plates are meshed with sector gears. The two sector gears are respectively fixedly connected to the outer walls of the two rotating rods.

[0015] Preferably, inner sliders are fixedly connected to the lower sides of the pressing round blocks. A receiving plate is fixedly connected to the side of the soldering chamber. The inner sliders are slidably connected with and adapted to the inner groove walls of the receiving plate. One side of each of the inner sliders is fixedly connected with a return spring. The sides of the return springs far from the inner sliders are fixedly connected to the inner wall surfaces of the receiving plate. The fixed sliding seat and the motor are both fixedly installed above the air collecting plate.

[0016] Preferably, movable blocks are fixedly connected to the outer walls of the two clamping connecting rods. The two movable blocks are respectively slidably connected to the side grooves of the soldering chamber. Telescopic doors are symmetrically and fixedly connected to the side grooves of the soldering chamber. One ends of the telescopic doors are respectively fixedly connected to one sides of the two movable blocks. A deformation rod is fixedly connected between the two movable blocks.

[0017] The beneficial effects of the present invention are as follows: 1. For the ammonia decomposition brazing furnace of the present invention, the driving assembly drives the two catalytic decomposition columns to rotate within the reaction chamber. When the reaction chamber rotates, the orientation of the outer wall surfaces of its respective regions changes, enabling ammonia to continuously pass through the outer wall surfaces of various parts of the catalytic decomposition column, ensuring sufficient hydrogen supply for the subsequent brazing process, facilitating more sufficient contact between ammonia and the surface of the catalytic decomposition column, increasing the reaction opportunities, and improving the efficiency of ammonia decomposing into hydrogen.

[0018] 2. For the ammonia decomposition brazing furnace of the present invention, through the swinging assembly, multiple gas injection pipes at two locations swing back and forth. During the swinging process, the outlet ends of the gas injection pipes can continuously face different brazing products, enabling hydrogen to act more uniformly on the surfaces of each metal connection product, helping to ensure that sufficient heat and protective gas can be obtained at each brazing position, thereby improving the brazing quality and reducing brazing defects caused by uneven hydrogen distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the drawings.

[0020] Figure 1 is the overall three-dimensional view of the present invention; Figure 2 is the structural schematic diagram of the ammonia tank in the present invention; Figure 3 is the structural schematic diagram of the brazing chamber in the present invention; Figure 4 is the structural schematic diagram of the transmission ring in the present invention; Figure 5 is the structural schematic diagram of the conveying box body in the present invention; Figure 6 is the structural schematic diagram of the reaction chamber in the present invention; Figure 7 is the structural schematic diagram of the movable block in the present invention; Figure 8 is the structural schematic diagram of the receiving plate in the present invention; Figure 9 is the structural schematic diagram of the sector gear in the present invention; Figure 10 is the structural schematic diagram of the inverted triangular plate in the present invention.

[0021] In the figure: 1, brazing table; 2, heat source furnace; 3, brazing chamber; 4, heating rod; 5, ammonia tank; 6, intake pipe; 7, air extraction pump; 8, feed bin; 9, discharge bin; 10, drive wheel; 11, conveyor belt; 12, preheating furnace; 13, conveying box body; 14, air outlet funnel; 15, reaction chamber; 16, catalytic decomposition column; 17, bellows; 18, air injection pipe; 19, air collecting plate; 20, motor; 21, transmission ring; 22, transmission belt; 23, rotating rod; 24, clamping connecting rod; 25, movable block; 26, retractable door; 27, extrusion round block; 28, inner slider; 29, receiving plate; 30, return spring; 31, inverted triangular plate; 32, lifting block; 33, fixed sliding seat; 34, rack plate; 35, sector gear. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] As Figures 1 to 10 shown, the present invention provides a technical solution: an ammonia decomposition brazing furnace, including a brazing table 1, a heat source furnace 2 is fixedly installed above the brazing table 1, a brazing chamber 3 is fixedly installed above the heat source furnace 2, a plurality of heating rods 4 are arranged inside the heat source furnace 2, a part of the heating rods 4 is inserted into the brazing chamber 3, reaction chambers 15 are symmetrically and fixedly installed inside the brazing chamber 3, a catalytic decomposition column 16 is rotatably connected to the inner wall of the reaction chamber 15, a plurality of bellows 17 are hinged and communicated at the bottom of the two reaction chambers 15, air injection pipes 18 are fixedly connected below the bellows 17, a conveying assembly for conveying brazing products is arranged outside the brazing chamber 3, a driving assembly for driving the catalytic decomposition column 16 to rotate is arranged on one side of the catalytic decomposition column 16, and a swinging assembly for driving the air injection pipe 18 to swing is arranged on one side of the air injection pipe 18.

[0024] During operation: firstly, apply the brazing material to the brazing position of the metal connection material product, and then convey the multiple metal connection products of the same batch to the inside of the brazing chamber 3 through the conveying assembly. At this time, the brazing products can be located below the two jet pipes 18, and the inside of the brazing chamber 3 is heated by the multiple heating rods 4 arranged inside the heat source furnace 2, so that the indoor temperature of the brazing chamber 3 gradually increases to the set brazing temperature. At this time, ammonia is introduced into the interior of the reaction chamber 15, and the ammonia will pass through the surface pores of the catalytic decomposition column 16, and cooperate with the high temperature environment outside the reaction chamber 15. The ammonia is heated under the action of high temperature and catalysis. A chemical reaction occurs under the action of the gas, and a large amount of hydrogen is generated. The hydrogen acts on the surface of the metal connection product through the bellows 17 and the jet pipe 18. The outlet pressure of the jet pipe is controlled at 0.05-0.15MPa (gauge pressure) to avoid high pressure directly impacting the solder. The main function of hydrogen is to provide heat and protective gas during the metal connection process, and it also helps to reduce the problems of oxidation and pollution on the metal surface. During the process of ammonia decomposition inside the two reaction chambers 15, the driving component drives the two catalytic decomposition columns 16 to rotate inside the reaction chamber 15, and the catalytic When the decomposition column 16 rotates, the orientation of the outer wall surface of each area thereof will change, so that ammonia can continuously pass through the outer wall surfaces of each part of the catalytic decomposition column 16, which helps ammonia to contact the surface of the catalytic decomposition column 16 more fully, increases the reaction opportunity, and improves the efficiency of ammonia decomposition of hydrogen. When the driving component moves, it will drive the swing component to rotate, and the swing component makes the multiple jet pipes 18 at two places swing back and forth. During the swinging process, the outlet end of the jet pipe 18 can continuously face different brazing products, so that each brazing product can be obtained. Effective processing results, through the above embodiment, through the driving component, it helps ammonia to contact the surface of the catalytic decomposition column 16 more fully, increase the reaction opportunity, improve the efficiency of ammonia decomposition of hydrogen, ensure that there is enough hydrogen supply for the subsequent brazing process, and through the swing component, the hydrogen can act more evenly on the surface of each metal connection product, thereby improving the brazing quality and reducing the brazing defects caused by uneven hydrogen distribution. In addition, the equipment components inside the brazing chamber 3 are coated with a high-temperature resistant coating to avoid damage to the equipment components inside the brazing chamber 3 at high temperatures.

[0025] like Figures 2 to 3 As shown, the conveying assembly includes two driving wheels 10, and the connecting seats of the two driving wheels 10 are fixedly installed on the top of the brazing table 1. A conveyor belt 11 is transmission-connected between the outer walls of the two driving wheels 10. A preheating furnace 12 is fixedly installed on the top of the brazing table 1, and a feed bin 8 and a discharge bin 9 are fixedly connected on both sides of the brazing chamber 3, respectively. The conveyor belt 11 continuously passes through the interior of the preheating furnace 12, the feed bin 8, the brazing chamber 3 and the discharge bin 9.

[0026] During operation: The continuous rotation of the two driving wheels 10 drives the continuous conveyance of the conveyor belt 11. The metal connecting products are continuously placed above the conveyor belt 11 on one side of the opening of the preheating furnace 12 and conveyed. The brazing products will first enter the interior of the preheating furnace 12 for preheating. After preheating, the products enter the interior of the brazing chamber 3 through the interior of the feed bin 8. After the products are conveyed to the predetermined position inside the brazing chamber 3, the conveyance stops. At this time, the ammonia decomposition brazing process is carried out. After completion, the metal products continue to be conveyed and collected on one side of the discharge bin 9.

[0027] As Figures 5 to 6 shown, an ammonia gas tank 5 is fixedly installed on one side of the brazing table 1. The top of the ammonia gas tank 5 is symmetrically and fixedly communicated with an intake pipe 6. An air extraction pump 7 is arranged outside each intake pipe 6. The end of each intake pipe 6 far from the ammonia gas tank 5 is fixedly communicated with a conveying box body 13. The two conveying box bodies 13 are both fixedly installed inside the brazing chamber 3. The conveying box body 13 is U-shaped. The end of the conveying box body 13 far from the intake pipe 6 is fixedly communicated with an air outlet funnel 14. The outer wall of the air outlet funnel 14 is inserted into the top of the reaction chamber 15. The bottom opening end of the air outlet funnel 14 is located directly above the catalytic decomposition column 16.

[0028] During operation: Through the arranged air extraction pump 7, the ammonia gas stored inside the ammonia gas tank 5 is conveyed to the interior of the conveying box body 13 through the intake pipe 6. The ammonia gas will first flow along the interior of the conveying box body 13. During the flowing process, the ammonia gas is first preheated. And because the conveying box body 13 is set to be U-shaped, the flowing path of the ammonia gas inside the conveying box body 13 is extended, which helps the ammonia gas to fully exchange heat with the wall surface of the conveying box body 13 during the flowing process, so as to achieve the preheating effect. After the ammonia gas flows along the interior of the conveying box body 13, it will enter the interior of the reaction chamber 15 through the air outlet funnel 14, and then cooperate with the catalytic decomposition column 16 to carry out the ammonia gas decomposition process. At the same time, the preheated ammonia gas has a higher temperature, the molecular movement is accelerated, and the contact opportunity with the surface of the reaction chamber 15 increases, thereby increasing the rate of the ammonia gas decomposition reaction.

[0029] As Figures 3 to 4 shown, the driving assembly includes a motor 20. The output shaft of the motor 20 is fixedly connected with a transmission ring 21. One side of each of the two catalytic decomposition columns 16 is fixedly connected with a rotating rod 23. The rotating rod 23 is rotatably connected to the side wall surfaces of the reaction chamber 15 and the brazing chamber 3. One end of each of the two rotating rods 23 is fixedly connected with a transmission ring 21. A transmission belt 22 is drivingly connected between the outer walls of the two transmission rings 21.

[0030] During operation: When the motor 20 is started, its output shaft drives one of the rotating rods 23 to rotate. And due to the transmission relationship between the two transmission rings 21 and the transmission belt 22, the two rotating rods 23 rotate synchronously in the same direction, so that the two catalytic decomposition columns 16 can rotate automatically when ammonia is introduced into the interior of the reaction chamber 15, thereby improving the efficiency of ammonia decomposition into hydrogen and ensuring sufficient hydrogen supply for the subsequent brazing process.

[0031] As Figures 6 to 7 shown, symmetrically fixed to the top inner wall of the reaction chamber 15 are gas-gathering plates 19, and the ends of the two gas-gathering plates 19 away from the reaction chamber 15 are in contact with the outer wall of the catalytic decomposition column 16.

[0032] During operation: Through the two gas-gathering plates 19 provided, when ammonia enters the interior of the reaction chamber 15 from the opening of the air outlet funnel 14, all the ammonia can pass through the surface of the catalytic decomposition column 16. The gas-gathering plates 19 restrict the flow direction of ammonia, preventing ammonia from not being able to all pass through the catalytic decomposition column 16 for the decomposition reaction.

[0033] As Figure 7 and Figure 9 shown, the swing assembly includes two clamping connecting rods 24. The inner walls of the two clamping connecting rods 24 are respectively fixedly connected to the outer walls of two groups of spray pipes 18. At the ends of the two clamping connecting rods 24 away from the spray pipes 18, there is fixedly connected an extrusion round block 27. Above the extrusion round block 27, there is an extrusion assembly for driving the two extrusion round blocks 27 to move away from or close to each other.

[0034] During operation: When the driving assembly moves, it drives the extrusion assembly to move. The extrusion assembly first makes the two extrusion round blocks 27 move away from each other. When the two extrusion round blocks 27 move, they drive the spray pipes 18 to swing simultaneously to one side in different directions through the clamping connecting rods 24. During the swinging process of the spray pipes 18, the connection points of the corrugated pipes 17 with the reaction chamber 15 will be articulated and rotated. Since the extrusion round blocks 27 always remain horizontal during movement, the spray pipes 18 will play a role in compensating for the length change through the corrugated pipes 17 during swinging to adapt to the length change of the spray pipes. The compensation effect of the corrugated pipes 17 enables the outlet ends of the spray pipes 18 to always remain on the same horizontal line, and the outlet ends of the spray pipes 18 will not swing at an arc angle. When the spray pipes 18 swing, the distance between their outlet ends and each brazing product is equal, so that the brazing products are evenly covered by hydrogen. When the two extrusion round blocks 27 move closer to each other, the two spray pipes 18 swing in the opposite direction to reset, so that hydrogen can act more evenly on the surfaces of each metal connection product, helping to ensure that sufficient heat and protective gas can be obtained at each brazing position, thereby improving the brazing quality.

[0035] AsFigures 8 to 10 As shown in the figure, the extrusion assembly includes an inverted triangular plate 31. The two inclined surfaces at the bottom of the inverted triangular plate 31 are respectively in contact with the outer walls of the two extrusion circular blocks 27. One side of the inverted triangular plate 31 is fixedly connected with a lifting block 32. The outer wall of the lifting block 32 is slidably connected with a fixed sliding seat 33. An elevating assembly is arranged above the inverted triangular plate 31.

[0036] During operation: When the two catalytic decomposition columns 16 always rotate in the same direction, it will drive the inverted triangular plate 31 to continuously perform lifting motion through the elevating assembly. When the inverted triangular plate 31 first descends, its bottom inclined surface will squeeze the two extrusion circular blocks 27. After being subjected to the squeezing force, the extrusion circular blocks 27 will move away from each other to both sides. When the inverted triangular plate 31 rises and resets, the two extrusion circular blocks 27 move closer to each other for resetting movement, so that the two groups of jet pipes 18 continuously swing, and the decomposed hydrogen is sprayed onto the surfaces of various brazing products through the outlet end. By setting the lifting block 32 and the fixed sliding seat 33, the stability of the inverted triangular plate 31 during the lifting process is improved, and the adaptability of the device is improved.

[0037] As Figures 9 to 10 shown in the figure, rack plates 34 are symmetrically and fixedly connected to the top of the inverted triangular plate 31. The teeth of the two rack plates 34 are both engaged with a sector gear 35. The two sector gears 35 are respectively fixedly connected to the outer walls of the two rotating rods 23.

[0038] During operation: Initially, the sector gear 35 on the left is in an engaged state with the rack plate 34 on the left, while the rack plate 34 on the right is located above the sector gear 35 on the right and is in a non-engaged state. When the two rotating rods 23 rotate synchronously, it will drive the two sector gears 35 to rotate in the same direction. When the sector gear 35 on the left rotates, through the tooth engagement relationship, it will first drive the rack plate 34 on the left to move downward, so that the inverted triangular plate 31 first moves downward to squeeze the two extrusion circular blocks 27, causing the jet pipe 18 to swing towards one side. The sector gear 35 on the right idles during this process. When the sector gear 35 on the left and the rack plate 34 on the left are engaged, at this time, the rack plate 34 on the right will follow the inverted triangular plate 31 and descend to the lower side of the sector gear 35 on the right. When the sector gear 35 on the right continues to rotate, it will drive the rack plate 34 on the right to move upward, so that the inverted triangular plate 31 moves upward, and the two extrusion circular blocks 27 move closer to each other, causing the two jet pipes 18 to swing in the opposite direction. When the sector gear 35 on the right and the rack plate 34 on the right are engaged, the rack plate 34 on the left will enter the engaged state again, starting the next round of swing cycle, thus realizing the effect of the continuous and repeated swing of the jet pipe 18.

[0039] As Figures 8 to 9As shown in the figure, an inner slider 28 is fixedly connected to the lower part of the extrusion round block 27. A receiving plate 29 is fixedly connected to the side surface of the brazing chamber 3. The inner slider 28 is slidably connected to and adapted to the inner groove wall of the receiving plate 29. A return spring 30 is fixedly connected to one side of each inner slider 28. The side of the return spring 30 away from the inner slider 28 is fixedly connected to the inner wall surface of the receiving plate 29. The fixed sliding seat 33 and the motor 20 are both fixedly installed above the air-gathering plate 19.

[0040] During operation: When the extrusion round block 27 first receives the extrusion force during the downward movement of the inverted triangular plate 31, the inner slider 28 will slide along the inner groove of the receiving plate 29, so that when the extrusion round block 27 is extruded and moves to both sides, it always maintains a horizontal state. When the inner slider 28 slides, it will squeeze the return spring 30 to deform. When the inverted triangular plate 31 rises, the two inner sliders 28 will gradually move closer to each other under the action of the return spring 30, and the outer wall of the extrusion round block 27 always closely adheres to the bottom inclined surface of the inverted triangular plate 31, thereby completing the effect that when the inverted triangular plate 31 rises and falls, the two jet pipes 18 continuously swing.

[0041] As Figure 3 and Figure 7 shown in the figure, movable blocks 25 are fixedly connected to the outer walls of the two clamping connecting rods 24. The two movable blocks 25 are respectively slidably connected to the side grooves of the brazing chamber 3. Telescopic doors 26 are symmetrically and fixedly connected to the side grooves of the brazing chamber 3. One ends of the telescopic doors 26 are respectively fixedly connected to one sides of the two movable blocks 25. A deformation rod is fixedly connected between the two movable blocks 25.

[0042] During operation: When the extrusion round block 27 drives the jet pipe 18 to continuously swing through the clamping connecting rod 24, the movable block 25 will repeatedly slide in the side groove of the brazing chamber 3. The telescopic door 26 may expand and contract according to the sliding direction of the movable block 25, and the deformation rod may deform to adapt to the position change of the movable block 25. No matter how the jet pipe 18 swings, the telescopic door 26 and the deformation rod can ensure that the side groove of the brazing chamber 3 remains sealed, preventing high temperature and decomposed hydrogen from leaking.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An ammonia decomposition brazing furnace, comprising a brazing table (1), characterized in that: A heat source furnace (2) is fixedly installed above the brazing table (1), a brazing chamber (3) is fixedly installed above the heat source furnace (2), a plurality of heating rods (4) are arranged inside the heat source furnace (2), a portion of the heating rods (4) is inserted into the brazing chamber (3), a reaction chamber (15) is symmetrically fixedly installed inside the brazing chamber (3), the inner wall of the reaction chamber (15) is rotatably connected to a catalytic decomposition column (16), the bottoms of the two reaction chambers (15) are hingedly connected to a plurality of bellows (17), the bellows (17) are fixedly connected to the bottom, a conveying assembly for conveying the brazing product is arranged outside the brazing chamber (3), a driving assembly for driving the catalytic decomposition column (16) to rotate is arranged on one side, and a swinging assembly for driving the jet pipe (18) to swing is arranged on one side of the jet pipe (18).

2. The ammonia decomposition brazing furnace according to claim 1, wherein: The conveying assembly comprises two driving wheels (10), the connecting seats of the two driving wheels (10) are fixedly mounted on the top of the brazing table (1), a conveyor belt (11) is drivingly connected between the outer walls of the two driving wheels (10), a preheating furnace (12) is fixedly mounted on the top of the brazing table (1), a feed bin (8) and a discharge bin (9) are fixedly connected on both sides of the brazing chamber (3), and the conveyor belt (11) continuously passes through the interior of the preheating furnace (12), the feed bin (8), the brazing chamber (3) and the discharge bin (9).

3. The ammonia decomposition brazing furnace according to claim 2, characterized in that: An ammonia tank (5) is fixedly installed on one side of the brazing table (1), and an air inlet pipe (6) is symmetrically fixedly connected to the top of the ammonia tank (5). An air pump (7) is arranged outside the air inlet pipe (6), and one end of the air inlet pipe (6) away from the ammonia tank (5) is fixedly connected to a delivery box (13). The two delivery boxes (13) are fixedly installed inside the brazing chamber (3). The delivery boxes (13) are U-shaped, and one end of the delivery boxes (13) away from the air inlet pipe (6) is fixedly connected to an air outlet funnel (14). The outer wall of the air outlet funnel (14) is plugged into the top of the reaction chamber (15), and the bottom open end of the air outlet funnel (14) is located directly above the catalytic decomposition column (16).

4. The ammonia decomposition brazing furnace according to claim 3, wherein: The driving assembly comprises a motor (20), the output shaft of the motor (20) being fixedly connected to a transmission ring (21), one side of each of the two catalytic decomposition columns (16) being fixedly connected to a rotating rod (23), the rotating rod (23) being rotationally connected to the side wall surfaces of the reaction chamber (15) and the brazing chamber (3), one end of each of the two rotating rods (23) being fixedly connected to the transmission ring (21), and a transmission belt (22) being transmission-connected between the outer walls of the two transmission rings (21).

5. The ammonia decomposition brazing furnace according to claim 4, wherein: The top of the inner wall of the reaction chamber (15) is symmetrically and fixedly connected with a gas collecting plate (19), and one end of the two gas collecting plates (19) away from the reaction chamber (15) is in contact with the outer wall of the catalytic decomposition column (16).

6. The ammonia decomposition brazing furnace according to claim 5, wherein: The swing assembly includes two clamping connecting rods (24). The inner walls of the two clamping connecting rods (24) are respectively fixedly connected to the outer walls of two groups of air injection pipes (18). One end of the two clamping connecting rods (24) away from the air injection pipes (18) is fixedly connected with an extrusion round block (27). Above the extrusion round block (27), there is an extrusion assembly for driving the two extrusion round blocks (27) to move away from or close to each other.

7. The ammonia decomposition brazing furnace according to claim 6, characterized in that: The extrusion assembly includes an inverted triangular plate (31). The two inclined surfaces at the bottom of the inverted triangular plate (31) are respectively attached to the outer walls of the two extrusion round blocks (27). One side of the inverted triangular plate (31) is fixedly connected with a lifting block (32). The outer wall of the lifting block (32) is slidably connected with a fixed sliding seat (33). Above the inverted triangular plate (31), there is a lifting assembly.

8. The ammonia decomposition brazing furnace according to claim 7, wherein: On the top of the inverted triangular plate (31), rack plates (34) are symmetrically and fixedly connected. The teeth of the two rack plates (34) are engaged with sector gears (35). The two sector gears (35) are respectively fixedly connected to the outer walls of two rotating rods (23).

9. The ammonia decomposition brazing furnace according to claim 8, characterized in that: Below the extrusion round block (27), an inner slider (28) is fixedly connected. On the side of the brazing chamber (3), a receiving plate (29) is fixedly connected. The inner slider (28) is slidably connected with and adapted to the inner groove wall of the receiving plate (29). On one side of the inner slider (28), a return spring (30) is fixedly connected. The side of the return spring (30) away from the inner slider (28) is fixedly connected to the inner wall surface of the receiving plate (29). The fixed sliding seat (33) and the motor (20) are both fixedly installed above the air collecting plate (19).

10. The ammonia decomposition brazing furnace according to claim 9, characterized in that: On the outer walls of the two clamping connecting rods (24), movable blocks (25) are fixedly connected. The two movable blocks (25) are respectively slidably connected to the side grooves of the brazing chamber (3). On the side grooves of the brazing chamber (3), telescopic doors (26) are symmetrically and fixedly connected. One end of each telescopic door (26) is fixedly connected to one side of the two movable blocks (25). A deformation rod is fixedly connected between the two movable blocks (25).

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