Natural gas tunnel type dryer

Abstract

The utility model discloses a natural gas tunnel type dryer which comprises a conveying frame (1), a conveying belt (11) is arranged on the conveying frame (1), a heat insulation shield (2) matched with the conveying frame (1) is arranged above the conveying belt (11), a drying tunnel (3) is formed in the heat insulation shield (2), a combustion chamber (4) is arranged on one side of the conveying frame (1), and the combustion chamber (4) is communicated with the drying tunnel (3) through an air duct (41) and an induced draft fan (42). A circulating pipeline (45) is further arranged in the drying tunnel (3), the inlet end of the circulating pipeline (45) is located at the tail of the drying tunnel (3) and provided with an exhaust fan (46), and the outlet end of the circulating pipeline (45) is communicated with the combustion chamber (4); a plurality of supports (5) are arranged at the rear end of the heat insulation shield (2), and cooling fans (51) are arranged on the supports (5). The utility model has the characteristic of improving the heat and energy utilization rate.

Description

Technical Field

[0001] The utility model relates to a drying machine, in particular to a natural gas tunnel drying machine. Background Art

[0002] Tunnel dryers are a type of drying equipment widely used in industrial production. They utilize a tunnel-like structure, placing materials within the tunnel via a conveyor belt or vibrating hopper. Through sufficient contact with hot air in the tunnel, moisture on the material's surface is rapidly evaporated, drying the material. Furthermore, the dryer is equipped with a fan and exhaust system to promptly remove moisture and maintain a suitable drying environment within the tunnel. Tunnel dryers offer many advantages over traditional drying equipment. First, their continuous loading and discharge process significantly improves production efficiency. Second, tunnel dryers have a large drying capacity, making them suitable for processing large batches of materials. Furthermore, the uniform flow of hot air within the tunnel ensures uniform drying of the material, reducing quality issues caused by uneven drying. Furthermore, by controlling parameters such as the hot air's temperature, humidity, and flow rate, tunnel dryers can achieve precise control of the material, ensuring optimal drying quality and a fast and uniform drying process.

[0003] However, the existing tunnel dryer easily discharges a large amount of heat due to the exhaust and moisture removal method, resulting in the problem of easy heat loss and insufficient heat utilization. Utility Model Content

[0004] The purpose of the utility model is to provide a natural gas tunnel drying machine. The utility model has the characteristics of improving the utilization rate of heat and energy.

[0005] The technical solution of the utility model is as follows: a natural gas tunnel dryer includes a conveyor frame, a conveyor belt is provided on the conveyor frame, a heat insulation shield is provided above the conveyor belt and cooperates with the conveyor frame, a drying channel is formed inside the heat insulation shield, a combustion chamber is provided on one side of the conveyor frame, the combustion chamber is connected to the drying channel through an air duct and an induced draft fan, a circulation pipe is also provided in the drying channel, the inlet end of the circulation pipe is located at the tail end of the drying channel and is provided with an exhaust fan, and the outlet end of the circulation pipe is connected to the combustion chamber; a plurality of brackets are provided at the rear end of the heat insulation shield, and a heat dissipation fan is provided on the bracket.

[0006] In the aforementioned natural gas tunnel dryer, a rotating shaft is provided at the inlet end of the heat-insulating shield, one end of the rotating shaft is driven by a motor, an isolating scraper is provided on the rotating shaft, and a plurality of isolating teeth are provided at the bottom of the isolating scraper.

[0007] In the aforementioned natural gas tunnel dryer, the isolation scraper is provided with an elongated groove for the rotating shaft to pass through, the width of the elongated groove is greater than the diameter of the rotating shaft, and the isolation scraper is provided with bolts connected to the rotating shaft.

[0008] In the aforementioned natural gas tunnel dryer, a natural gas burner is provided on the combustion chamber.

[0009] In the aforementioned natural gas tunnel dryer, a smoke exhaust port is provided on the combustion chamber.

[0010] In the aforementioned natural gas tunnel dryer, the bracket includes vertical frames symmetrically distributed on both sides of the conveying tail end of the conveying frame. The tops of the two vertical frames are connected by a connecting rod. A mounting plate is provided on the connecting rod. A through hole is provided on the mounting plate. The heat dissipation fan is installed on the mounting plate and corresponds to the through hole.

[0011] In the aforementioned natural gas tunnel dryer, an air flow filtering and purification component is provided in the air duct.

[0012] In the aforementioned natural gas tunnel dryer, a temperature control system and a humidity control system are also provided in the drying tunnel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The combustion chamber in the utility model can generate heat through combustion equipment or electric heating elements, and the heat is then introduced into the drying tunnel in the heat-insulating shield through the air duct and the induced draft fan; the moist material is conveyed from one end of the drying tunnel to the other end through the conveyor belt, the induced draft fan introduces the hot air flow in the combustion chamber into the head of the drying tunnel, and the exhaust fan and the circulation pipe draw the hot air flow at the tail of the drying tunnel into the combustion chamber for reheating and utilization, so that the hot air flow forms a circulating flow in the drying tunnel to ensure that the hot air can cover the entire surface of the material, achieve a fast and uniform drying effect of the material, improve the drying efficiency, save energy, reduce heat loss, and improve energy and heat utilization rate; finally, the heat dissipation fan is used to quickly cool down the surface of the material discharged from the drying tunnel, dissipate heat and cool it, which is convenient for subsequent processing; and the heat dissipation fan can also accelerate the hot air flow through the circulation pipe for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a structural diagram of the circulation pipeline.

[0017] Figure 3 It is a structural diagram of the isolation scraper.

[0018] The marks in the accompanying drawings are: 1. Conveyor rack; 11. Conveyor belt; 2. Heat insulation shield; 3. Drying tunnel; 31. Rotating shaft; 32. Motor; 33. Isolation scraper; 34. Isolation tooth; 35. Long groove; 36. Bolt; 4. Combustion chamber; 41. Air duct; 42. Draft fan; 43. Natural gas burner; 44. Smoke exhaust port; 45. Circulation duct; 46. Exhaust fan; 5. Bracket; 51. Cooling fan; 52. Stand; 53. Connecting rod; 54. Mounting plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] Example:

[0022] like Figure 1-Figure 3 As shown, the natural gas tunnel dryer includes a conveyor frame 1, a conveyor belt 11 is provided on the conveyor frame 1, and a heat insulation shield 2 is provided above the conveyor belt 11 to cooperate with the conveyor frame 1. A drying channel 3 is formed inside the heat insulation shield 2, and a combustion chamber 4 is provided on one side of the conveyor frame 1. The combustion chamber 4 is connected to the drying channel 3 through an air duct 41 and an induced draft fan 42. A circulation pipe 45 is also provided in the drying channel 3. The inlet end of the circulation pipe 45 is located at the tail end of the drying channel 3 and is provided with an exhaust fan 46. The outlet end of the circulation pipe 45 is connected to the combustion chamber 4; a plurality of brackets 5 are provided at the rear end of the heat insulation shield 2, and a heat dissipation fan 51 is provided on the bracket 5.

[0023] The combustion chamber 4 can generate heat through combustion equipment or electric heating elements, and the heat is then introduced into the drying tunnel 3 in the heat insulation shield 2 through the air duct 41 and the induced draft fan 42; the moist material is transported from one end of the drying tunnel 3 to the other end through the conveyor belt 11, and the induced draft fan 42 introduces the hot air flow in the combustion chamber 4 into the head of the drying tunnel 3, and the exhaust fan 46 and the circulation pipe 45 draw the hot air flow at the tail of the drying tunnel 3 into the combustion chamber 4 for reheating and utilization, so that the hot air flow forms a circulating flow in the drying tunnel 3 to ensure that the hot air can cover the entire surface of the material, achieve a fast and uniform drying effect of the material, improve the drying efficiency, save energy, reduce heat loss, and improve energy and heat utilization; finally, the heat dissipation fan 51 is used to quickly cool down the surface of the material discharged from the drying tunnel 3 to dissipate heat and cool it, which is convenient for subsequent processing; and the heat dissipation fan 51 can also accelerate the hot air flow through the circulation pipe 45 for reuse.

[0024] The inlet end of the heat-insulating shield 2 is provided with a rotating shaft 31, one end of which is driven to rotate by a motor 32. An isolation scraper 33 is provided on the rotating shaft 31, and a plurality of isolation teeth 34 are provided at the bottom of the isolation scraper 33. Driven by the motor 32 and the rotating shaft 31, the isolation scraper 33 rotates to block the material at a certain height, thereby spreading and dispersing the material, accelerating the drying speed, and preventing the material from piling up and affecting the drying effect.

[0025] The isolation scraper 33 is provided with an elongated slot 35 for the shaft 31 to pass through. The width of the elongated slot 35 is greater than the diameter of the shaft 31. The isolation scraper 33 is provided with a bolt 36 that connects to the shaft 31. The height of the isolation scraper 33 can be adjusted by adjusting the vertical position of the shaft 31 in the elongated slot 35. The blocking height can be adjusted according to different drying materials, making it more flexible to use.

[0026] The combustion chamber 4 is provided with a natural gas burner 43. The natural gas burner 43 burns natural gas to generate heat, which is then introduced into the drying tunnel 3 to dry the material.

[0027] The combustion chamber 4 is provided with a smoke exhaust port 44. The smoke exhaust port 44 is provided to discharge the smoke generated by the natural gas burner 43 through the smoke exhaust port 44, thereby preventing the smoke from entering the drying tunnel 3 and contaminating the materials.

[0028] The support 5 comprises uprights 52 symmetrically positioned on either side of the conveying end of the conveyor frame 1. The two uprights 52 are connected at their tops by a connecting rod 53. Connecting rod 53 is provided with a mounting plate 54, which is provided with through-holes. Cooling fans 51 are mounted on mounting plates 54 and correspond to the through-holes. Cooling fans 51 are mounted above the conveyor belt 11, maintaining a certain distance from the material being conveyed on the conveyor belt 11, thereby accelerating airflow and improving heat dissipation.

[0029] The air duct 41 is provided with an airflow filtration and purification assembly, which includes a filter, an adsorption layer, a water-absorbing layer, etc. The filtration assembly removes dust, particulate matter, and moisture from the airflow in the combustion chamber 4 through the filter, adsorption layer, and water-absorbing layer, and then directs the dry, clean hot air flow into the drying duct 3, ensuring the cleanliness of the hot air flow in the drying duct 3 and preventing contamination of materials.

[0030] The drying tunnel 3 is also equipped with a temperature control system and a humidity control system. The temperature and humidity of the hot air flow can be adjusted according to the characteristics and needs of the material. By monitoring and adjusting these parameters, the material can be dried in an appropriate environment, avoiding damage or inefficiency caused by excessive temperature or humidity.

[0031] The parts not described in detail in this utility model are prior art and thus will not be elaborated here.

Claims

1. Natural gas tunnel drying machine, characterized by: The invention comprises a conveying frame (1), a conveying belt (11) is provided on the conveying frame (1), a heat-insulating shield (2) matched with the conveying frame (1) is provided above the conveying belt (11), a drying channel (3) is formed inside the heat-insulating shield (2), a combustion chamber (4) is provided on one side of the conveying frame (1), the combustion chamber (4) is communicated with the drying channel (3) through an air duct (41) and an induced draft fan (42), a circulation pipe (45) is further provided in the drying channel (3), the inlet end of the circulation pipe (45) is located at the tail end of the drying channel (3) and is provided with an exhaust fan (46), and the outlet end of the circulation pipe (45) is communicated with the combustion chamber (4); a plurality of brackets (5) are provided at the rear end of the heat-insulating shield (2), and a heat dissipation fan (51) is provided on the brackets (5).

2. The natural gas tunnel dryer according to claim 1, characterized in that: The inlet end of the heat insulation shield (2) is provided with a rotating shaft (31), one end of which is driven by a motor (32), an isolation scraper (33) is provided on the rotating shaft (31), and a plurality of isolation teeth (34) are provided at the bottom of the isolation scraper (33).

3. The natural gas tunnel dryer according to claim 2, characterized in that: The isolation scraper (33) is provided with an elongated groove (35) for the rotating shaft (31) to pass through, the width of the elongated groove (35) is greater than the diameter of the rotating shaft (31), and the isolation scraper (33) is provided with a bolt (36) connected to the rotating shaft (31).

4. The natural gas tunnel dryer according to claim 1, characterized in that: A natural gas burner (43) is provided on the combustion chamber (4).

5. The natural gas tunnel dryer according to claim 1, characterized in that: The combustion chamber (4) is provided with a smoke exhaust port (44).

6. The natural gas tunnel dryer according to claim 1, characterized in that: The bracket (5) comprises vertical frames (52) symmetrically distributed on both sides of the conveying tail end of the conveying frame (1), the tops of the two vertical frames (52) are connected by a connecting rod (53), a mounting plate (54) is provided on the connecting rod (53), the mounting plate (54) is provided with a through hole, and the heat dissipation fan (51) is installed on the mounting plate (54) and corresponds to the through hole.

7. The natural gas tunnel dryer according to claim 1, characterized in that: An air flow filtering and purification component is provided in the air duct (41).

8. The natural gas tunnel dryer according to claim 1, characterized in that: A temperature control system and a humidity control system are also provided in the drying tunnel (3).

Images