Environment-friendly gas-fired heat cycle crucible furnace

Abstract

The utility model discloses an environmental protection type gas formula heat cycle crucible furnace, including box one and box two, be equipped with crucible furnace in the box one, the box one and be located the baffle of crucible furnace outer wall is equipped with, the baffle with box one fixed connection, the box one and be located below the baffle and set up as the combustion chamber, the box one and be located above the baffle and set up the waste heat heating chamber, the crucible furnace top end extends to the box one outside with the cover board is connected. Advantageous effects: through setting up air preheating chamber and heat exchange component can be through high temperature flue gas to air preheating, improve its combustion efficiency, and heat exchange component passes through hollow mounting disc and heat exchange pipe cooperation and preheats air, high temperature flue gas does not need to pass through the fan and enter the flame guide pipe, improves the fan safety, and the limiting component in heat exchange component makes hollow mounting disc and heat exchange pipe convenient to take out from air preheating chamber and clean or replace, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of crucible furnace technology, and more specifically, to an environmentally friendly gas-fired thermal circulation crucible furnace. Background Technology

[0002] A gas-fired crucible furnace is a device used for high-temperature experiments and material processing. It typically consists of a crucible, a burner, and heating elements, providing a high-temperature environment for heating, sintering, melting, and other processes of materials. During the operation of a gas-fired crucible furnace, a large amount of waste heat is generated. If this waste heat is not utilized properly, it is equivalent to wasting a portion of energy. In order to reduce energy consumption and operating costs, it is necessary to make full use of the waste heat.

[0003] According to the gas-fired crucible furnace with waste heat recycling disclosed in Chinese Patent CN202420133174.4, this application includes a main body and a connecting block. The connecting block is fixedly connected to one side of the main body, and a furnace body is fixedly connected to the middle of the main body. A combustion chamber is fixedly connected inside the main body, and the furnace body is fixedly connected to the middle of the combustion chamber. A control panel is fixedly connected to one side of the connecting block, and a heating component is arranged inside the connecting block. One end of the heating component is fixedly connected to the middle of the combustion chamber. With the cooperation of structures such as the exhaust pipe, cavity, air inlet pipe, exhaust fan, and groove, the flue gas can not only heat the outer periphery of the furnace body inside the cavity, but also preheat the air through the exhaust fan, thereby improving combustion efficiency and solving the problem of unsatisfactory waste heat recovery. In existing gas-fired crucible furnaces, high-temperature flue gas discharged from the air-fuel boiler is uniformly transported to the flame guide tube by an exhaust fan. Because the high temperature of the flue gas is high, it is easy to damage the inside of the exhaust fan when it passes through it, affecting the service life of the fan. At the same time, some dust and impurities in the high-temperature flue gas will also flow back into the flame guide tube, thus affecting the normal use of the crucible furnace.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an environmentally friendly gas-fired thermal circulation crucible furnace to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An environmentally friendly gas-fired thermal circulation crucible furnace includes a first chamber and a second chamber. The first chamber houses the crucible furnace. A partition is fitted onto the outer wall of the first chamber and fixedly connected to the first chamber. A combustion chamber is located below the partition in the first chamber, and a waste heat heating chamber is located above the partition in the first chamber. The top of the crucible furnace extends out of the first chamber and connects to a cover plate. A burner is located on one side of the second chamber, and a flame guide pipe extends through the second chamber and into the combustion chamber from one side of the burner. An opening is formed in the second chamber. The system includes an air preheating chamber with an air inlet pipe on its inner wall and a corrugated expansion pipe at its bottom. The bottom of the corrugated expansion pipe has a connecting pipe that communicates with the flame guide pipe. A heat exchange assembly is located in the air preheating chamber between the air inlet pipe and the corrugated expansion pipe. One side of the air inlet pipe extends to the outside of the housing and connects to the fan outlet. Several flue gas flow pipes arranged in a circular array are provided at the top of the partition. A guide hole communicating with the air preheating chamber is opened in the inner wall of the waste heat heating chamber. A smoke exhaust pipe is provided at the top of the housing.

[0008] Preferably, the second housing is provided with a control panel on one side, and the second housing is provided with a sealing door that matches the air preheating chamber on the side of the control panel.

[0009] Preferably, the heat exchange assembly includes hollow mounting plates symmetrically arranged between the air inlet pipe and the corrugated expansion pipe. Both sets of hollow mounting plates are connected to the air inlet pipe and the corrugated expansion pipe respectively through limiting components. A plurality of heat exchange tubes are evenly distributed between the two sets of hollow mounting plates, and the heat exchange tubes are respectively connected to the two sets of hollow mounting plates.

[0010] Preferably, the limiting assembly includes connecting seats fixedly provided on the side of the air input pipe and the corrugated telescopic pipe, and insertion slots opened on the side of the two sets of connecting seats. Insertion pipes matching the insertion slots are provided on the side of the two sets of hollow mounting plates that are far apart. The outer wall of the connecting seat is provided with symmetrically arranged fixing sleeves. A limiting rod is provided in the fixing sleeve. A sliding pressure plate matching the fixing sleeve is sleeved on the outer wall of the limiting rod. A spring is sleeved on one side of the sliding pressure plate and on the outer wall of the limiting rod. One side of the limiting rod extends into the insertion slot. A limiting groove matching the limiting rod is opened on the outer wall of the insertion pipe. The other side of the limiting rod extends out of the fixing sleeve and connects to the pull ring.

[0011] Preferably, the two sets of connecting seats are respectively connected to the air input pipe and the corrugated telescopic pipe, and the plug pipe is connected to the hollow mounting plate.

[0012] Preferably, both the fixing sleeve and the connecting seat are provided with sliding holes that match the limiting rod.

[0013] The beneficial effects of this utility model are as follows: by setting up an air preheating chamber and a heat exchange component, the air can be preheated by high-temperature flue gas, thereby improving its combustion efficiency. At the same time, the heat exchange component preheats the air through the cooperation of the hollow mounting plate and the heat exchange tube. The high-temperature flue gas does not need to pass through the fan to enter the flame guide tube, thus improving the fan safety. The limiting component in the heat exchange component makes it easy to remove the hollow mounting plate and the heat exchange tube from the air preheating chamber for cleaning or replacement, making it more convenient to use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an environmentally friendly gas-fired thermal circulation crucible furnace according to an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of an environmentally friendly gas-fired thermal circulation crucible furnace according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a hollow mounting plate in an environmentally friendly gas-fired thermal circulation crucible furnace according to an embodiment of the present utility model;

[0018] Figure 4 This is a front view of a hollow mounting plate in an environmentally friendly gas-fired thermal circulation crucible furnace according to an embodiment of the present utility model;

[0019] Figure 5 This is a cross-sectional view of the hollow mounting plate in an environmentally friendly gas-fired thermal circulation crucible furnace according to an embodiment of the present invention.

[0020] Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0021] In the picture:

[0022] 1. Box 1; 2. Box 2; 3. Crucible furnace; 4. Baffle; 5. Combustion chamber; 6. Waste heat heating chamber; 7. Cover plate; 8. Burner; 9. Flame guide tube; 10. Air preheating chamber; 11. Air input pipe; 12. Corrugated expansion pipe; 13. Connecting pipe; 14. Fan; 15. Flue gas flow pipe; 16. Guide hole; 17. Exhaust pipe; 18. Control panel; 19. Sealing door; 20. Hollow mounting plate; 21. Heat exchange tube; 22. Connecting seat; 23. Insertion slot; 24. Insertion pipe; 25. Fixing sleeve; 26. Limiting rod; 27. Sliding pressure plate; 28. Spring; 29. ​​Limiting groove; 30. Pull ring. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, an environmentally friendly gas-fired thermal circulation crucible furnace is provided.

[0025] Example 1;

[0026] like Figure 1-6 As shown, the environmentally friendly gas-fired thermal circulation crucible furnace according to an embodiment of the present invention includes a housing 1 and a housing 2. A crucible furnace 3 is housed in housing 1. A partition 4 is fitted onto the outer wall of housing 1 and the crucible furnace 3. The partition 4 is fixedly connected to housing 1. A combustion chamber 5 is located in housing 1 below the partition 4. A waste heat heating chamber 6 is located in housing 1 above the partition 4. The top of the crucible furnace 3 extends out of housing 1 and connects to a cover plate 7. A burner 8 is located on one side of housing 2. A flame guide pipe 9 penetrates housing 2 and extends into the combustion chamber 5 on one side of the burner 8. An opening is formed in housing 2. An air preheating chamber 10 is provided, with an air input pipe 11 on the inner wall of the air preheating chamber 10. A corrugated expansion pipe 12 is provided at the bottom of the air preheating chamber 10. A connecting pipe 13 connected to the flame guide pipe 9 is provided at the bottom of the corrugated expansion pipe 12. A heat exchange component is provided in the air preheating chamber 10 between the air input pipe 11 and the corrugated expansion pipe 12. One side of the air input pipe 11 extends to the outside of the second housing 2 and connects to the air outlet of the fan 14. Several flue gas flow pipes 15 arranged in a circular array are provided at the top of the partition 4. A guide hole 16 connected to the air preheating chamber 10 is opened on the inner wall of the waste heat heating chamber 6. A smoke exhaust pipe 17 is provided at the top of the second housing 2.

[0027] Example 2;

[0028] like Figure 1-6As shown, the system includes a first box 1 and a second box 2. A crucible furnace 3 is housed in the first box 1. A partition 4 is fitted onto the outer wall of the first box 1 and located below the partition 4. The partition 4 is fixedly connected to the first box 1. A combustion chamber 5 is located in the first box 1 below the partition 4. A waste heat heating chamber 6 is located in the first box 1 above the partition 4. The top of the crucible furnace 3 extends out of the first box 1 and connects to a cover plate 7. A burner 8 is located on one side of the second box 2. A flame guide pipe 9 penetrates the second box 2 and extends into the combustion chamber 5 on one side of the burner 8. An air preheating chamber 10 is opened in the second box 2. An air preheating chamber 10 has an air inlet pipe 11 on its inner wall. A corrugated expansion pipe 12 is located at the bottom of the air preheating chamber 10, and a connecting pipe 13 connected to the flame guide pipe 9 is located at the bottom of the corrugated expansion pipe 12. A heat exchange assembly is located in the air preheating chamber 10 between the air inlet pipe 11 and the corrugated expansion pipe 12. One side of the air inlet pipe 11 extends to the outside of the housing 2 and connects to the air outlet of the fan 14. A plurality of flue gas flow pipes 15 arranged in a circular array are located at the top of the partition 4. A guide hole 16 connected to the air preheating chamber 10 is opened on the inner wall of the waste heat heating chamber 6. A smoke exhaust pipe 17 is located at the top of the housing 2. A control panel 18 is located on one side of the housing 2, and a sealing door 19 matching the air preheating chamber 10 is located on the side of the control panel 18 of the housing 2. The heat exchange assembly includes hollow mounting plates 20 symmetrically arranged between the air inlet pipe 11 and the corrugated expansion pipe 12. Both sets of hollow mounting plates 20 are connected to the air inlet pipe 11 and the corrugated expansion pipe 12 respectively through limiting components. A plurality of heat exchange tubes 21 are evenly distributed between the two sets of hollow mounting plates 20, and the heat exchange tubes 21 are respectively connected to the two sets of hollow mounting plates 20. The limiting assembly includes connecting seats 22 fixedly provided on the side of the air input pipe 11 and the corrugated telescopic pipe 12. Each of the two sets of connecting seats 22 has a insertion groove 23 on the side of its proximity. Each of the two sets of hollow mounting plates 20 has a insertion pipe 24 matching the insertion groove 23 on the side of its distance from the insertion groove 23. The outer wall of the connecting seat 22 has symmetrically arranged fixing sleeves 25. A limiting rod 26 is provided in the fixing sleeve 25. A sliding pressure plate 27 matching the fixing sleeve 25 is sleeved on the outer wall of the limiting rod 26. A spring 28 is sleeved on one side of the sliding pressure plate 27 and on the outer wall of the limiting rod 26. One side of the limiting rod 26 extends into the insertion groove 23. The outer wall of the insertion pipe 24 has a limiting groove 29 matching the limiting rod 26. The other side of the limiting rod 26 extends out of the fixing sleeve 25 and connects to the pull ring 30. The two sets of connecting seats 22 are respectively connected to the air input pipe 11 and the corrugated telescopic pipe 12, and the insertion pipe 24 is connected to the hollow mounting plate 20.Both the fixing sleeve 25 and the connecting seat 22 are provided with sliding holes that match the limiting rod 26.

[0029] In practical application, the burner 8 and fan 14 are started. The burner 8 injects flame into the combustion chamber 5 through the flame guide pipe 9 to heat the crucible furnace 3. The flue gas is discharged to the waste heat heating chamber 6 through multiple sets of flue gas flow pipes 15 on the baffle 4 to heat the crucible furnace 3. Then, the flue gas is discharged to the air preheating chamber 10 through the guide hole 16. The fan 14 delivers outside air to the hollow mounting plate 20 through the air input pipe 11. Then, the air passes through multiple sets of heat exchange tubes 21 and enters another set of hollow mounting plates 20. Immediately afterwards, the air is input to the flame guide pipe 9 through the corrugated expansion pipe 12 and the connecting pipe 13. When the air passes through the heat exchange tubes 21, the high-level flue gas entering the air preheating chamber 10 will heat the heat exchange tubes 21, thereby preheating the air in the heat exchange tubes 21. When it is necessary to clean or replace the hollow mounting plate 20 and the heat exchange tubes 21, first operate the connecting seat 22 on the corrugated expansion pipe 12 and pull it. Ring 30 drives the limiting rod 26 to disengage from the limiting groove 29 on the insertion pipe 24. At this time, the corrugated telescopic pipe 12 is pulled down to move the connecting seat 22 downward, causing the insertion pipe 24 to disengage from the connecting seat 22. Then, the connecting seat 22 on the air input pipe 11 is operated, and the pulling ring 30 drives the limiting rod 26 to disengage from the limiting groove 29 on the insertion pipe 24. At this time, the hollow mounting plate 20 above is pulled to disengage the insertion pipe 24 from the connecting seat 22. The hollow mounting plate 20 and the heat exchange tube 21 are removed from the air preheating chamber 10. By setting up the air preheating chamber and heat exchange components, the air can be preheated by high-temperature flue gas, improving its combustion efficiency. At the same time, the heat exchange components preheat the air through the cooperation of the hollow mounting plate and heat exchange tube. The high-temperature flue gas does not need to pass through the fan to enter the flame guide tube, improving the fan safety. The limiting component in the heat exchange components makes it easy to remove the hollow mounting plate and heat exchange tube from the air preheating chamber for cleaning or replacement, making it more convenient to use.

[0030] In summary, by utilizing the above-mentioned technical solution of this utility model, the air preheating chamber and heat exchange components can be set to preheat the air with high-temperature flue gas, thereby improving its combustion efficiency. At the same time, the heat exchange components preheat the air through the cooperation of the hollow mounting plate and heat exchange tubes, so that the high-temperature flue gas does not need to pass through the fan to enter the flame guide tube, thus improving the fan safety. The limiting components in the heat exchange components make it easy to remove the hollow mounting plate and heat exchange tubes from the air preheating chamber for cleaning or replacement, making it more convenient to use.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An environmentally friendly gas-fired thermal circulation crucible furnace, characterized in that, The system includes a first box (1) and a second box (2). The first box (1) contains a crucible furnace (3). A partition (4) is fitted on the outer wall of the first box (1) and located below the partition (4). The partition (4) is fixedly connected to the first box (1). A combustion chamber (5) is located in the first box (1) below the partition (4). A waste heat heating chamber (6) is located in the first box (1) above the partition (4). The top of the crucible furnace (3) extends to the outside of the first box (1) and is connected to a cover plate (7). A burner (8) is located on one side of the second box (2). A flame guide pipe (9) is located on one side of the burner (8) that penetrates the second box (2) and extends into the combustion chamber (5). An air preheating chamber (10) is opened in the second box (2). An air inlet pipe (11) is provided on the inner wall of the air preheating chamber (10). A corrugated telescopic pipe (12) is provided at the bottom of the air preheating chamber (10). A connecting pipe (13) connected to the flame guide pipe (9) is provided at the bottom of the corrugated telescopic pipe (12). A heat exchange component is provided in the air preheating chamber (10) between the air inlet pipe (11) and the corrugated telescopic pipe (12). One side of the air inlet pipe (11) extends to the outside of the second box (2) and is connected to the air outlet of the fan (14). A number of flue gas flow pipes (15) arranged in a circular array are provided at the top of the partition plate (4). A guide hole (16) connected to the air preheating chamber (10) is opened on the inner wall of the waste heat heating chamber (6). A smoke exhaust pipe (17) is provided at the top of the second box (2).

2. The environmentally friendly gas-fired thermal circulation crucible furnace according to claim 1, characterized in that, The second box (2) is provided with a control panel (18) on one side, and the second box (2) is provided with a sealing door (19) that matches the air preheating chamber (10) on the side of the control panel (18).

3. The environmentally friendly gas-fired thermal circulation crucible furnace according to claim 2, characterized in that, The heat exchange assembly includes hollow mounting plates (20) symmetrically arranged between the air inlet pipe (11) and the corrugated expansion pipe (12). Both sets of hollow mounting plates (20) are connected to the air inlet pipe (11) and the corrugated expansion pipe (12) respectively through limiting components. A plurality of heat exchange tubes (21) are evenly distributed between the two sets of hollow mounting plates (20). The heat exchange tubes (21) are respectively connected to the two sets of hollow mounting plates (20).

4. The environmentally friendly gas-fired thermal circulation crucible furnace according to claim 3, characterized in that, The limiting assembly includes connecting seats (22) fixedly provided on the side of the air input pipe (11) and the corrugated telescopic pipe (12) respectively. Both sets of connecting seats (22) have insertion slots (23) on the side of their proximity. Both sets of hollow mounting plates (20) have insertion pipes (24) that match the insertion slots (23) on the side of their distance from each other. The outer wall of the connecting seat (22) is provided with symmetrically arranged fixing sleeves (25). Each fixing sleeve (25) contains a limiting rod (26). The outer wall of the positioning rod (26) is fitted with a sliding pressure plate (27) that matches the fixed sleeve (25). A spring (28) is fitted on one side of the sliding pressure plate (27) and on the outer wall of the positioning rod (26). One side of the positioning rod (26) extends into the insertion groove (23). The outer wall of the insertion tube (24) is provided with a positioning groove (29) that matches the positioning rod (26). The other side of the positioning rod (26) extends to the outside of the fixed sleeve (25) and connects to the pull ring (30).

5. The environmentally friendly gas-fired thermal circulation crucible furnace according to claim 4, characterized in that, The two sets of connecting seats (22) are respectively connected to the air input pipe (11) and the corrugated telescopic pipe (12), and the plug pipe (24) is connected to the hollow mounting plate (20).

6. The environmentally friendly gas-fired thermal circulation crucible furnace according to claim 5, characterized in that, Both the fixing sleeve (25) and the connecting seat (22) are provided with sliding holes that match the limiting rod (26).

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