Energy-saving hot blast stove

Abstract

The utility model discloses an energy -saving hot -blast furnace, including casing, combustion mechanism and heat exchange mechanism, the rear side wall upper end fixed connection of it has the hot -blast outlet, the combustion mechanism: it includes sleeve, ceramic lever, combustion furnace, heat pipeline no.

Description

Technical Field

[0001] This utility model relates to the field of hot air furnace technology, specifically an energy-saving hot air furnace. Background Technology

[0002] A hot blast furnace is a core piece of industrial thermal equipment. Its core function is to efficiently transfer the heat energy generated by fuel combustion to air, outputting high-temperature gas that meets process requirements. Its working principle is mainly based on the complete combustion of fuel within the combustion chamber, releasing high-temperature flue gas. Subsequently, the heat from this high-temperature flue gas is transferred to the air to be heated through a specific method.

[0003] Hot blast stoves typically introduce external air from one end of the combustion chamber, exchange heat with the heat exchanger, and then exit from the other end. While the external air permeates the interior of the stove, its flow lacks guidance and cannot fully contact all components involved in the heat transfer process, resulting in insufficient heat exchange. Simultaneously, fuel accumulates on the grate inside the combustion chamber, leading to incomplete combustion due to its smaller contact area with air. Furthermore, the supplied combustion air generally enters from the edge of the combustion chamber, forming a ring-shaped airflow with most of the air located at the edge, resulting in poor combustion and inefficient fuel utilization. Therefore, we propose an energy-saving hot blast stove. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an energy-saving hot air furnace. By optimizing the combustion furnace structure, the fuel combustion is made more complete, and the hot air and cold air are guided to form serpentine flow channels to achieve efficient utilization of heat. This can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving hot air furnace, comprising a shell, a combustion mechanism, and a heat exchange mechanism;

[0006] Housing: A hot air outlet is fixedly connected to the upper end of its rear side wall;

[0007] Combustion mechanism: It includes a sleeve, a ceramic lever, a combustion furnace, a heat pipe, and an annular seat. The combustion furnace is fixedly connected to the front side of the bottom wall of the shell. The upper end of the combustion furnace is fixedly connected to a uniformly distributed heat pipe. The upper ends of the heat pipe are fixedly connected to an annular seat. The top wall of the combustion furnace is rotatably connected to a ceramic lever via a rotating shaft. The lower surface edge of the grate of the combustion furnace is fixedly connected to a sleeve. The outer arc surface of the sleeve is provided with uniformly distributed air outlets. The middle of the outer arc surface of the combustion furnace is provided with a feeding port. The right end of the feeding port passes through an opening in the right side wall of the shell.

[0008] Heat exchange mechanism: It is located inside the rear side of the shell. The heat exchange mechanism is set in conjunction with the annular seat. By optimizing the structure of the combustion furnace, the fuel combustion is more complete. At the same time, it guides the hot air and cold air to form a serpentine flow channel to achieve efficient utilization of heat.

[0009] Furthermore, it also includes a control switch assembly, which is located on the right side of the housing. The input end of the control switch assembly is electrically connected to an external power source to control electrical appliances.

[0010] Furthermore, the combustion mechanism also includes a motor. The bottom wall of the annular seat is provided with evenly distributed supports. A ceramic fixing plate is fixedly connected between the upper ends of the supports. A motor is fixedly connected to the upper surface of the ceramic fixing plate. The lower end of the output shaft of the motor is fixedly connected to the upper end of the rotating shaft of the ceramic lever. The input end of the motor is electrically connected to the output end of the control switch group, driving the ceramic lever to rotate.

[0011] Furthermore, the combustion mechanism also includes an air inlet. An air inlet is provided on the rear side of the lower end of the outer arc surface of the combustion furnace. The rear side wall of the air inlet is tangent to the outer arc surface of the combustion furnace. The air inlet is located at the lower end of the sleeve. The right end of the air inlet passes through the second opening on the right side wall of the shell. A second fan is fixedly connected to the right end of the air inlet. The input end of the second fan is electrically connected to the output end of the control switch group to supply external air for combustion.

[0012] Furthermore, a fan is fixedly connected to the upper front side of the housing. The fan is located at the front end of the motor. The input end of the fan is electrically connected to the output end of the control switch group, which sends in cold air to cool the motor at the same time.

[0013] Furthermore, the heat exchange mechanism includes a second heat pipe, a first reversing cavity, a second baffle plate, and a discharge cavity. The second heat pipe is uniformly and fixedly connected to the rear end of the lower surface of the annular seat. The first reversing cavity is fixedly connected to the bottom wall of the shell. The second reversing cavity and the discharge cavity are fixedly connected to the top wall of the shell from front to back. The upper end of the discharge cavity is provided with a discharge port. The lower ends of the second heat pipes are all connected to the front end of the upper surface of the first reversing cavity. The rear end of the upper surface of the first reversing cavity is fixedly connected to three sets of uniformly distributed heat exchange pipes. The upper ends of the first and second sets of heat exchange pipes from front to back are all connected to the lower surface of the second reversing cavity. The upper ends of the third set of heat exchange pipes from front to back are all connected to the lower surface of the discharge cavity. The second baffle plate is fixedly connected between the top wall and the bottom wall of the second reversing cavity. The second baffle plate is located between the first and second sets of heat exchange pipes from front to back, realizing the serpentine flow of hot air.

[0014] Furthermore, the heat exchange mechanism also includes partition 1, partition 3, and partition 4. Partition 1 is fixedly connected to the rear side wall of the annular seat. Partition 3 is fixedly connected to the middle of the upper surface of the reversing cavity 2. Partition 3 is located between the first and second groups of heat exchange pipes from front to back. Partition 4 is fixedly connected to the lower surface of the reversing cavity 2. Partition 4 is located between the second and third groups of heat exchange pipes from front to back. Partition 5 is fixedly connected between the front side of the reversing cavity 2 and the upper surface of the annular seat to guide the direction of cold air flow.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This energy-saving hot air furnace has the following advantages:

[0016] 1. During the combustion process inside the combustion furnace, the biomass fuel is moved by the ceramic lever, which makes the biomass fuel evenly distributed on the upper part of the grate of the combustion furnace, resulting in more complete combustion. At the same time, the annular airflow sent in by the air inlet is discharged from the air outlet through the sleeve. The airflow is concentrated in the middle of the grate of the combustion furnace, which improves the combustion effect.

[0017] 2. The cold air delivered by the blower first cools the motor, then flows from the annular seat to the combustion furnace. After passing through the second heat pipe, it passes through the shields of the first, third and fourth partitions and then through three sets of heat exchange pipes in sequence. The cold air comes into contact with the heat-carrying components inside the shell, making fuller use of the heat generated by the combustion of biomass fuel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Housing, 2. Control switch assembly, 3. Combustion mechanism, 31. Air inlet, 32. Sleeve, 33. Ceramic lever, 34. Combustion furnace, 35. Heat pipe I, 36. Annular seat, 37. Motor, 4. Heat exchange mechanism, 41. Heat pipe II, 42. Reversing chamber I, 43. Baffle I, 44. Baffle II, 45. Baffle III, 46. Reversing chamber II, 47. Baffle IV, 48. Discharge chamber, 5. Fan I, 6. Ceramic fixing plate, 7. Baffle V, 8. Discharge port, 9. Fan II, 10. Feed port, 11. Hot air outlet, 12. Heat exchange pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-2 This embodiment provides a technical solution: an energy-saving hot air furnace, including a shell 1, a combustion mechanism 3 and a heat exchange mechanism 4;

[0023] Housing 1: A hot air outlet 11 is fixedly connected to the upper end of its rear side wall;

[0024] Combustion mechanism 3 includes a sleeve 32, a ceramic lever 33, a combustion furnace 34, heat pipes 35, and an annular seat 36. The combustion furnace 34 is fixedly connected to the front side of the bottom wall of the housing 1. The upper end of the combustion furnace 34 is fixedly connected to evenly distributed heat pipes 35. The upper ends of the heat pipes 35 are fixedly connected to an annular seat 36. The top wall of the combustion furnace 34 is rotatably connected to the ceramic lever 33 via a rotating shaft. The lower surface edge of the grate of the combustion furnace 34 is fixedly connected to the sleeve 32. The outer arc surface of the sleeve 32 has evenly distributed air outlets. The middle of the outer arc surface of the combustion furnace 34 is provided with a feeding port 10. The right end of the feeding port 10 passes through the right side of the housing 1. The combustion mechanism 3 also includes a motor 37, with an opening in the side wall. The bottom wall of the annular seat 36 has evenly distributed supports, with ceramic fixing plates 6 fixedly connected to the upper ends of the supports. The upper surface of the ceramic fixing plates 6 is fixedly connected to the motor 37. The lower end of the output shaft of the motor 37 is fixedly connected to the upper end of the rotating shaft of the ceramic lever 33. The input end of the motor 37 is electrically connected to the output end of the control switch group 2. The combustion mechanism 3 also includes an air inlet 31. An air inlet 31 is located on the rear side of the lower end of the outer arc surface of the combustion furnace 34. The rear side wall of the air inlet 31 is tangent to the outer arc surface of the combustion furnace 34. The air inlet 31 is located at the lower end of the sleeve 32, and the right end of the air inlet 31 passes through the housing 1. The right side wall has an opening 2. A second fan 9 is fixedly connected to the right end of the air inlet 31. The input end of the second fan 9 is electrically connected to the output end of the control switch group 2. A first fan 5 is fixedly connected to the upper front side of the casing 1. The first fan 5 is located at the front end of the motor 37. The input end of the first fan 5 is electrically connected to the output end of the control switch group 2. The worker opens the furnace door of the combustion furnace 34 to ignite the biomass fuel, and then closes the furnace door. When the biomass fuel burns, the second fan 9 sends in external air through the air inlet 31. When the external air enters the combustion furnace 34, it forms a ring-shaped airflow. Most of the airflow surrounds the edge of the combustion furnace 34. The edge of the grate of the combustion furnace 34 is... In the closed state, the annular airflow is discharged from the air outlet of the sleeve 32, which concentrates the airflow in the middle of the grate of the combustion furnace 34, resulting in better combustion. At the same time, the motor 37 drives the rotating shaft and ceramic lever 33 to rotate. The ceramic lever 33 moves the burning biomass fuel to prevent the biomass fuel from accumulating and to make the combustion more complete. Hot air enters the interior of the annular seat 36 from the heat pipe 35. The motor 37 is isolated from the support of the annular seat 36 by the ceramic fixing plate 6, which reduces the heat conduction from the annular seat 36 to the motor 37. At the same time, the fan 5 is directly facing the motor 37, and the cold air delivered by the fan 5 blows directly on the motor 37 to cool it down and prevent the motor 37 from overheating.

[0025] Heat exchange mechanism 4: It is located inside the rear side of the shell 1. The heat exchange mechanism 4 is configured to cooperate with the annular seat 36. The heat exchange mechanism 4 includes a second heat pipe 41, a first reversing cavity 42, a second baffle 44, a second reversing cavity 46, and a discharge cavity 48. The second heat pipe 41 is uniformly and fixedly connected to the rear end of the lower surface of the annular seat 36. The first reversing cavity 42 is fixedly connected to the bottom wall of the shell 1. The second reversing cavity 46 and the discharge cavity 48 are fixedly connected to the top wall of the shell 1 from front to back. The upper end of the discharge cavity 48 is provided with a discharge port 8. The lower ends of the second heat pipe 41 are all connected to the front end of the upper surface of the first reversing cavity 42. The rear end of the upper surface of the first reversing cavity 42 is fixedly connected to... The heat exchange mechanism 4 is equipped with three sets of evenly distributed heat exchange pipes 12. The upper ends of the first and second sets of heat exchange pipes 12, from front to back, are connected to the lower surface of the second reversing cavity 46. The upper ends of the third set of heat exchange pipes 12, from front to back, are connected to the lower surface of the discharge cavity 48. A partition 44 is fixedly connected between the top and bottom walls of the second reversing cavity 46. The partition 44 is located between the first and second sets of heat exchange pipes 12. The heat exchange mechanism 4 also includes a first partition 43, a third partition 45, and a fourth partition 47. The first partition 43 is fixedly connected to the rear side wall of the annular seat 36. The third partition 45 is fixedly connected to the middle of the upper surface of the second reversing cavity 46. Plate 3 45 is located between the first and second groups of heat exchange pipes 12 from front to back. A partition 47 is fixedly connected to the lower surface of the reversing cavity 2 46. The partition 47 is located between the second and third groups of heat exchange pipes 12 from front to back. A partition 5 7 is fixedly connected between the front side of the reversing cavity 2 46 and the upper surface of the annular seat 36. Hot air from the annular seat 36 enters the left side cavity of the reversing cavity 1 42 from the heat pipe 2 41, after being separated by the partition 2 44. It then passes sequentially through the first group of heat exchange pipes 12 from front to back, the reversing cavity 2 46, the second group of heat exchange pipes 12 from front to back, and the right side cavity of the reversing cavity 1 42 after being separated by the partition 2 44. The third heat exchange pipe 12 from front to back enters the discharge chamber 48 and is discharged through the discharge port 8. At the same time, the cold air sent in by the fan 5 is blocked by the baffle 7, so that it can only flow from the annular seat 36 to the combustion furnace 34. Then, through the heat pipe 41, the cold air is heated by the annular seat 36, the combustion furnace 34 and the heat pipe 41 in sequence, reducing the heat loss at the combustion furnace 34. Then, through the baffle 43, the baffle 45 and the baffle 47, the cold air serpentine between the heat exchange pipes 12, so that the cold air can fully contact and exchange heat with all the heat exchange pipes 12, making full use of the heat of the hot air inside the heat exchange pipes 12.

[0026] It also includes a control switch group 2, which is located on the right side of the housing 1, and the input terminal of the control switch group 2 is electrically connected to an external power supply.

[0027] The working principle of the energy-saving hot blast stove provided by this utility model is as follows: The feeding device is fixedly connected to the rear end of the feeding port 10. Biomass fuel is conveyed to the inside of the combustion furnace 34 through the auger of the feeding device. The worker opens the furnace door of the combustion furnace 34 to ignite the biomass fuel, and then closes the furnace door of the combustion furnace 34. When the biomass fuel is burning, the blower 2 9 sends in external air through the air inlet 31. When the external air enters the combustion furnace 34, it forms an annular airflow. Most of the airflow surrounds the edge of the combustion furnace 34. The edge of the grate of the combustion furnace 34 is in a closed state. The annular airflow is discharged from the air outlet of the sleeve 32, so that the airflow is concentrated in the middle of the grate of the combustion furnace 34, which helps to... The combustion effect is better. At the same time, the motor 37 drives the rotating shaft and ceramic lever 33 to rotate. The ceramic lever 33 moves the burning biomass fuel to avoid the accumulation of biomass fuel and make the combustion more complete. Hot air enters the interior of the annular seat 36 from the heat pipe 35. The motor 37 is isolated from the bracket of the annular seat 36 by the ceramic fixing plate 6 to reduce the heat conduction from the annular seat 36 to the motor 37. At the same time, the fan 5 is directly facing the motor 37. The cold air delivered by the fan 5 blows directly on the motor 37 (the air inlet and outlet of the fan 9 and the fan 5 can be fixedly connected with a filter screen to filter the outside air and prevent dust from entering), cooling the motor 37 and preventing the motor 37 from overheating.

[0028] Hot air from the annular seat 36 enters the left side cavity of the reversing chamber 42 through the second heat pipe 41, after being separated by the second partition 44. It then passes sequentially through the first set of heat exchange pipes 12 (from front to back), the second reversing chamber 46, the second set of heat exchange pipes 12 (from front to back), the right side cavity of the reversing chamber 42 (separated by the second partition 44), and the third set of heat exchange pipes 12 (from front to back), finally entering the discharge chamber 48 and exiting through the discharge port 8. Simultaneously, cold air supplied by the fan 5 is blocked by the fifth partition 7. This allows the cold air to flow only from the annular seat 36 to the combustion furnace 34. Subsequently, through the second heat pipe 41, the cold air is heated sequentially by the annular seat 36, the combustion furnace 34, and the second heat pipe 41, reducing heat loss at the combustion furnace 34. Then, through the shielding of the first partition 43, the third partition 45, and the fourth partition 47, the cold air serpentinely travels between the heat exchange pipes 12, allowing the cold air to fully contact and exchange heat with all the heat exchange pipes 12, making full use of the heat inside the heat exchange pipes 12.

[0029] It is worth noting that the motor 37 disclosed in the above embodiments can be an MA series high temperature resistant motor, the fan 5 can be a DF series high temperature resistant worm gear fan, the fan 9 can be an SHT-300 high temperature resistant fan, and the control switch group 2 is equipped with switch buttons corresponding to the motor 37, the fan 5 and the fan 9 for controlling their switching operation.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An energy-saving hot air furnace, characterized in that: It includes a shell (1), a combustion mechanism (3), and a heat exchange mechanism (4); Shell (1): A hot air outlet (11) is fixedly connected to the upper end of its rear side wall; Combustion mechanism (3): It includes a sleeve (32), a ceramic lever (33), a combustion furnace (34), a heat pipe (35) and an annular seat (36). The combustion furnace (34) is fixedly connected to the front side of the bottom wall of the shell (1). The upper end of the combustion furnace (34) is fixedly connected to a uniformly distributed heat pipe (35). The upper ends of the heat pipe (35) are fixedly connected to an annular seat (36). The top wall of the combustion furnace (34) is rotatably connected to a ceramic lever (33) through a rotating shaft. The lower surface edge of the grate of the combustion furnace (34) is fixedly connected to a sleeve (32). The outer arc surface of the sleeve (32) is provided with uniformly distributed air outlets. The middle part of the outer arc surface of the combustion furnace (34) is provided with a feeding port (10). The right end of the feeding port (10) passes through the opening of the right side wall of the shell (1). Heat exchange mechanism (4): It is located inside the rear side of the shell (1), and the heat exchange mechanism (4) is configured in conjunction with the annular seat (36).

2. The energy-saving hot air furnace according to claim 1, characterized in that: It also includes a control switch group (2), which is located on the right side of the housing (1), and the input end of the control switch group (2) is electrically connected to an external power source.

3. The energy-saving hot air furnace according to claim 2, characterized in that: The combustion mechanism (3) also includes a motor (37). The bottom wall of the annular seat (36) is provided with evenly distributed supports. A ceramic fixing plate (6) is fixedly connected between the upper ends of the supports. The upper surface of the ceramic fixing plate (6) is fixedly connected to the motor (37). The lower end of the output shaft of the motor (37) is fixedly connected to the upper end of the rotating shaft of the ceramic lever (33). The input end of the motor (37) is electrically connected to the output end of the control switch group (2).

4. An energy-saving hot air furnace according to claim 2, characterized in that: The combustion mechanism (3) also includes an air inlet (31). The air inlet (31) is provided on the rear side of the lower end of the outer arc surface of the combustion furnace (34). The rear side wall of the air inlet (31) is tangent to the outer arc surface of the combustion furnace (34). The air inlet (31) is located at the lower end of the sleeve (32). The right end of the air inlet (31) passes through the second opening on the right side wall of the housing (1). The right end of the air inlet (31) is fixedly connected to the second fan (9). The input end of the second fan (9) is electrically connected to the output end of the control switch group (2).

5. An energy-saving hot air furnace according to claim 3, characterized in that: A fan (5) is fixedly connected to the upper front side of the housing (1). The fan (5) is located at the front end of the motor (37). The input end of the fan (5) is electrically connected to the output end of the control switch group (2).

6. The energy-saving hot air furnace according to claim 1, characterized in that: The heat exchange mechanism (4) includes a second heat pipe (41), a first reversing chamber (42), a second partition (44), a second reversing chamber (46), and a discharge chamber (48). The second heat pipe (41) is uniformly and fixedly connected to the rear end of the lower surface of the annular seat (36). The first reversing chamber (42) is fixedly connected to the bottom wall of the shell (1). The second reversing chamber (46) and the discharge chamber (48) are fixedly connected to the top wall of the shell (1) from front to back. The upper end of the discharge chamber (48) is provided with a discharge port (8). The lower end of the second heat pipe (41) is connected to the first reversing chamber (46). 2) The front end of the upper surface is connected. The rear end of the upper surface of the first reversing cavity (42) is fixedly connected to three sets of evenly distributed heat exchange pipes (12). The upper ends of the first and second sets of heat exchange pipes (12) from front to back are connected to the lower surface of the second reversing cavity (46). The upper ends of the third set of heat exchange pipes (12) from front to back are connected to the lower surface of the discharge cavity (48). The top wall and bottom wall of the second reversing cavity (46) are fixedly connected to a partition plate (44). The partition plate (44) is located between the first and second sets of heat exchange pipes (12) from front to back.

7. An energy-saving hot air furnace according to claim 6, characterized in that: The heat exchange mechanism (4) further includes a first partition (43), a third partition (45), and a fourth partition (47). The first partition (43) is fixedly connected to the rear side wall of the annular seat (36). The third partition (45) is fixedly connected to the middle of the upper surface of the second reversing cavity (46). The third partition (45) is located between the first and second heat exchange pipes (12) from front to back. The fourth partition (47) is fixedly connected to the lower surface of the second reversing cavity (46). The fourth partition (47) is located between the second and third heat exchange pipes (12) from front to back. The fifth partition (7) is fixedly connected between the front side of the second reversing cavity (46) and the upper surface of the annular seat (36).

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