A heat recovery drying hot air furnace

Abstract

This utility model relates to the field of drying processing technology, and discloses a heat recovery drying hot air furnace, including a shell, a bottom plate, a hot air combustion furnace, a heat exchange pipe, an exhaust treatment device, a heat exchange blower, and an ash removal trough. The hot air combustion furnace is equipped with an air outlet at the top and a heat exchange blower at the bottom to blow the hot air generated by the combustion inside, supplying the hot air to the tea drying. The combustion exhaust gas then enters the heat exchange pipe, first flowing downwards through the air inlet channel, then upwards through the upper air pipe, and finally exiting from the top of the heat exchange pipe into the exhaust treatment device. All of these exhaust gases are eventually discharged. A heat exchange blower is located on the outside of the large shell, blowing air into the shell to expel the heat emitted by the heat exchange pipe and the exhaust treatment device, as well as some of the heat from the hot air combustion furnace, to supplement the drying process. This allows for heat energy recovery and reduces heat energy loss.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, specifically a heat recovery drying hot air furnace. Background Technology

[0002] Currently, most tea drying machines use a hot air furnace to heat air into hot air and blow it onto the shaped tea leaves. The hot air furnace is enclosed by a large outer shell, and inside, the hot air combustion furnace burns the hot air. The hot air generated by the combustion is then blown by a blower to supply the hot air to the tea leaves for drying. The heat energy in this process is not recovered, resulting in a large heat loss. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a heat recovery drying hot air furnace, which has the following advantages.

[0004] To achieve the above-mentioned functional objectives, this utility model provides the following technical solution: a heat recovery drying hot air furnace, comprising a shell, characterized in that: the shell includes a bottom plate, a hot air combustion furnace, a heat exchange pipe, an exhaust treatment device, a heat exchange blower, and an ash removal trough; the bottom plate is fixed to the bottom end of the shell; the hot air combustion furnace, the heat exchange pipe, the exhaust treatment device, and the heat exchange blower are fixed to the top of the bottom plate from left to right; the ash removal trough is fixed to the bottom end of the heat exchange pipe; an air inlet channel is fixed to the top end of the heat exchange pipe; a partition is fixed in the middle of the air inlet channel; a ventilation pipe is fixed to the bottom end of the air inlet channel; a lower air pipe is fixed to the left end of the ventilation pipe; and an upper air pipe is fixed to the right end of the ventilation pipe; and several lower and upper air pipes are provided.

[0005] Furthermore, the exhaust treatment equipment is an existing cyclone particle capture device.

[0006] Furthermore, the ash removal trough includes a base platform, a sliding door, a fixed base, a main connecting rod, a secondary connecting rod, and a connecting platform. A motor is fixed to the base platform. The sliding door is connected to the front side of the ash removal trough. The base platform is fixed to the back of the ash removal trough, which is away from the side of the sliding door. A handle is fixed to the front side of the sliding door. Several fixed bases are included, and each fixed base is fixed to the four sides of the base platform. The bottom ends of the main connecting rod and the secondary connecting rod are connected to the sides of the fixed base. The main connecting rod is connected to the output end of the motor. The connecting platform is connected to the top ends of the main connecting rod and the secondary connecting rod. There are three secondary connecting rods, and the top ends of each secondary connecting rod are connected to one side of the connecting platform.

[0007] The bottom end of the main connecting rod is connected to a first rotating rod, and the top end of the first rotating rod is connected to a second rotating rod. The auxiliary connecting rod has the same structure as the main connecting rod.

[0008] Furthermore, an air outlet is fixed at the top of the hot air combustion furnace, and a combustion chamber is connected inside the hot air combustion furnace.

[0009] Compared with the prior art, the advantages of this utility model are as follows: The hot air combustion furnace has an air outlet at the top and a heat exchange blower at the bottom to blow the hot air generated by the combustion inside, which is then supplied to the tea drying. The combustion exhaust gas then enters the heat exchange pipe, first going down through the air inlet channel, then going up through the upper air pipe, and finally exiting from the top of the heat exchange pipe into the exhaust treatment equipment. All of these exhaust gases are eventually discharged. A heat exchange blower is located on the outside of the large outer shell, blowing air into the shell to blow out the heat emitted by the heat exchange pipe and the exhaust treatment equipment, as well as some of the heat from the hot air combustion furnace, to supplement the drying process. This allows for the recovery of heat energy and reduces heat loss.

[0010] Since the exhaust gas flows downwards first, some soot will settle. Therefore, an ash removal trough is set at the bottom of the heat exchange pipe. After the heat exchange pipe is finished, it needs to be ash removed. However, the residual heat in its inner cavity affects the operator's ash removal. The moving platform in the ash removal trough pushes out dust and other debris to complete the ash removal work. Attached Figure Description

[0011] Figure 1 This is a front structural diagram of a heat recovery drying hot air furnace according to the present invention;

[0012] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a heat recovery drying hot air furnace according to the present invention;

[0013] Figure 3 This is a partial three-dimensional structural diagram of a heat recovery drying hot air furnace according to the present invention;

[0014] Figure 4 This is a schematic diagram of the ash removal trough structure of a heat recovery drying hot air furnace according to this utility model;

[0015] Figure 5 This is a schematic diagram of the airflow direction of a heat recovery drying hot air furnace according to this utility model.

[0016] The attached diagram is labeled as follows: 1. Shell; 2. Base plate; 3. Hot air combustion furnace; 4. Heat exchange pipe; 5. Exhaust treatment equipment; 6. Heat exchange blower; 7. Ash removal trough; 41. Air inlet channel; 42. Ventilation pipe; 421. Lower air pipe; 422. Upper air pipe; 70. Base platform; 71. Sliding door; 72. Fixed seat; 73. Main connecting rod; 74. Secondary connecting rod; 75. Connecting platform; 30. Air outlet. Detailed Implementation

[0017] 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. For embodiments, please refer to... Figure 1-5 A heat recovery drying hot air furnace includes a shell 1, characterized in that: the shell 1 includes a bottom plate 2, a hot air combustion furnace 3, a heat exchange pipe 4, an exhaust treatment device 5, a heat exchange blower 6, and an ash removal trough 7. The bottom plate 2 is fixed to the bottom end of the shell. The hot air combustion furnace 3, the heat exchange pipe 4, the exhaust treatment device 5, and the heat exchange blower 6 are fixed to the top end of the bottom plate 2 from left to right. The ash removal trough 7 is fixed to the bottom end of the heat exchange pipe 4. An air inlet channel 41 is fixed to the top end of the heat exchange pipe 4. A partition is fixed in the middle of the air inlet channel 41. A ventilation pipe 42 is fixed to the bottom end of the air inlet channel 41. A lower air pipe 421 is fixed to the left end of the ventilation pipe 42, and an upper air pipe 422 is fixed to the right end of the ventilation pipe 42. Several lower air pipes 421 and upper air pipes 422 are provided.

[0018] The lower trachea 421 includes, but is not limited to, eight, and the upper trachea 422 includes, but is not limited to, eighteen.

[0019] The exhaust treatment equipment 5 is an existing cyclone particle capture device. The cyclone particle capture device is a dust removal device that makes the dust-laden airflow rotate at high speed and uses centrifugal force to separate and collect the particles from the airflow.

[0020] The ash removal trough 7 includes a base 70, a sliding door 71, a fixed base 72, a main connecting rod 73, a secondary connecting rod 74, and a connecting platform 75. A motor is fixed to the base 70. The sliding door 71 is connected to the front side of the ash removal trough 7. The base 70 is fixed to the back side of the ash removal trough 7, which is away from the side of the sliding door 71. A handle is fixed to the front side of the sliding door 71. Several fixed bases 72 are included, and each fixed base 72 is fixed to the four sides of the base 70. The bottom ends of the main connecting rod 73 and the secondary connecting rod 74 are connected to the sides of the fixed base 72. The main connecting rod 73 is connected to the output end of the motor. The connecting platform 75 is connected to the top ends of the main connecting rod 73 and the secondary connecting rod 74. There are three secondary connecting rods 74, and the top end of each secondary connecting rod 74 is connected to one side of the connecting platform 75.

[0021] The mounting base 72 includes, but is not limited to, four.

[0022] The bottom end of the main connecting rod 73 is connected to a first rotating rod 731, and the top end of the first rotating rod 731 is connected to a second rotating rod 732. The auxiliary connecting rod 74 has the same structure as the main connecting rod 73.

[0023] The hot air combustion furnace 3 has an air outlet 30 fixed at its top, and a combustion chamber is connected inside the hot air combustion furnace 3.

[0024] Working principle: The hot air combustion furnace 3 is equipped with an air outlet 30 at the top and a heat exchange blower 6 at the bottom to blow the hot air generated by the combustion inside, supplying the tea drying. The combustion exhaust gas then enters the heat exchange pipe 4, first going down through the air inlet channel 41, then going up through the upper air pipe 422, and finally exiting from the top of the heat exchange pipe 4 into the exhaust treatment equipment 5. All the exhaust gas is eventually discharged. The heat exchange blower 6 is located on the outside of the large outer shell, blowing air into the shell to blow out the heat emitted by the heat exchange pipe and exhaust treatment equipment, as well as some of the heat from the hot air combustion furnace, to replenish the drying process. This can recover heat energy and reduce heat loss.

[0025] Since the exhaust gas flows downwards first, some soot will settle. Therefore, an ash removal trough is set at the bottom of the heat exchange pipe. After the heat exchange pipe is finished, it needs to be ash removed. However, the residual heat in its inner cavity affects the operator's ash removal. The moving platform in the ash removal trough pushes out dust and other debris to complete the ash removal work.

[0026] The material burns inside the hot air combustion furnace 3. The cavity inside the hot air combustion furnace, i.e. the combustion chamber, gets heated. The outside air blows away the heat from the combustion chamber to dry the tea leaves. The exhaust gas produced by combustion inside the combustion chamber is then used for further treatment. The blower does not come into contact with the inside of the combustion chamber.

[0027] After the heat exchange pipe is finished, it needs to be shoveled. However, the residual heat in its inner cavity affects the operator's shovel removal. At this time, a collection bucket is placed in front of the shovel trough 7. Hold the handle of the sliding door and open the sliding door. Move back and forth in the shovel trough 7 through the connecting platform 75. This can push the soot and other debris to one side of the sliding door 71, so that the soot and debris fall into the collection bucket.

[0028] The ash removal process involves starting the motor to drive the main connecting rod 73 to rotate. At this time, the first rotating rod 731 makes a circular motion, and the second rotating rod 732 rotates with the first rotating rod 731. The second rotating rod 732 swings left and right with the connecting end at the top of the second rotating rod 732 as the center. Meanwhile, the first rotating rod 731 of the auxiliary connecting rod 74 swings back and forth at less than 120 degrees along its direction, pushing the second rotating rod 732 to rotate with the connecting end of the first rotating rod 731, thereby causing the connecting platform to move within the ash removal trough 7.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat recovery drying hot air furnace, comprising a shell (1), characterized in that: The shell (1) includes a base plate (2), a hot air combustion furnace (3), a heat exchange pipe (4), an exhaust treatment device (5), a heat exchange blower (6), and an ash removal trough (7). The base plate (2) is fixed to the bottom of the shell. The hot air combustion furnace (3), the heat exchange pipe (4), the exhaust treatment device (5), and the heat exchange blower (6) are fixed to the top of the base plate (2) from left to right. The ash removal trough (7) is fixed to the bottom of the heat exchange pipe (4). An air inlet channel (41) is fixed to the top of the heat exchange pipe (4). A partition is fixed in the middle of the air inlet channel (41). A ventilation pipe (42) is fixed to the bottom of the air inlet channel (41). A lower air pipe (421) is fixed to the left end of the ventilation pipe (42). An upper air pipe (422) is fixed to the right end of the ventilation pipe (42). Several lower air pipes (421) and upper air pipes (422) are provided.

2. The heat recovery drying hot air furnace according to claim 1, characterized in that: The ash removal trough (7) includes a base (70), a sliding door (71), a fixed seat (72), a main connecting rod (73), a secondary connecting rod (74), and a connecting platform (75). The base (70) is fixed with a motor. The sliding door (71) is connected to the front side of the ash removal trough (7). The base (70) is fixed to the back side of the ash removal trough (7), which is away from the side of the sliding door (71). The front side of the sliding door (71) is fixed with a handle. The fixed seat (72) includes several, and each fixed seat (72) is fixed to the four sides of the base (70). The bottom ends of the main connecting rod (73) and the secondary connecting rod (74) are connected to the side of the fixed seat (72). The main connecting rod (73) is connected to the output end of the motor. The connecting platform (75) is connected to the top of the main connecting rod (73) and the secondary connecting rod (74). There are three secondary connecting rods (74), and the top of each secondary connecting rod (74) is connected to the side of the connecting platform (75).

3. The heat recovery drying hot air furnace according to claim 2, characterized in that: The bottom end of the main connecting rod (73) is connected to a first rotating rod (731), and the top end of the first rotating rod (731) is connected to a second rotating rod (732). The auxiliary connecting rod (74) has the same structure as the main connecting rod (73).

4. The heat recovery drying hot air furnace according to claim 1, characterized in that: The hot air combustion furnace (3) has an air outlet (30) fixed at the top and a combustion chamber connected inside.

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