Exhaust device for agricultural machine triangular belt drying oven

Abstract

The utility model relates to the technical field of air exhaust devices, and discloses an air exhaust device for an agricultural machine triangular belt drying oven. The air exhaust device for the agricultural machine triangular belt drying oven comprises a connecting pipe, a limiting plate is fixedly installed in the connecting pipe, a guide pipe is fixedly installed above the limiting plate, a bent pipe is fixedly installed at the front end of the guide pipe, a PLC is fixedly installed on the left side of the guide pipe, a flow guide plate is fixedly installed in the guide pipe, and the flow guide plate is fixedly installed on the left side of the guide pipe. The bent pipes are symmetrically installed on the front side and the rear side of the guide pipe with the center of the guide pipe as the reference, one ends of the bent pipes communicate with the guide pipe, the other ends of the bent pipes face downwards, meanwhile, mirror symmetry cambered surface structures are arranged on the front side and the rear side of the flow guide plate, and the flow guide plate is fixedly installed in the center of the top face of an inner cavity of the guide pipe. The flow guide plate can conveniently guide airflow into the bent pipe, and dust can be prevented from entering the drying box through the exhaust device under the condition that the influence on the air flow speed is reduced as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust devices, in particular to an exhaust device for an agricultural machinery V-belt oven. Background Technique

[0002] After the temperature inside the agricultural machinery V-belt drying oven rises, the water on the surface of the V-belt will evaporate into the air inside the drying oven. If the air inside the drying oven is not discharged, the water content in the air inside the drying oven will quickly become saturated, affecting the drying efficiency. Therefore, an exhaust device is needed to discharge the air with high water content inside the drying oven.

[0003] The existing Chinese utility model patent with the reference publication number of CN206929926 discloses an exhaust device, which includes a box body with an opening on the front side plate. A fan is installed in the box body, an exhaust pipe is arranged at the top of the box body, and the air outlet of the fan is communicated with the exhaust pipe; a circular flap is arranged in the exhaust pipe, the flap is rotatably connected to the exhaust pipe through a first rotating shaft, a fixing frame is arranged on the outer wall of the exhaust pipe, a gear plate is arranged on the fixing frame, the gear plate is perpendicular to the first rotating shaft, and a plurality of gear slots are opened at the edge of the gear plate; one end of the first rotating shaft is provided with a clip, and a positioning pin is fixedly arranged on the clip, and the positioning pin can be clamped in the gear slot. According to the size of the exhaust volume, determine the rotation angle of the flap, then open the clip to disengage the positioning pin from the gear slot, and at the same time hold the clip and rotate it to drive the first rotating shaft to rotate, thereby driving the flap to flip. When the flipping angle reaches the preset value, release the clip, and the positioning pin is clamped into the corresponding gear slot to determine the angle of the flap and prevent it from rotating accidentally.

[0004] Most of the existing exhaust devices discharge air through the airflow generated by the fan. Since the power of the motor driving the fan is constant, the temperature inside the drying oven will quickly drop during use, affecting the drying efficiency of the drying oven. At the same time, the exhaust device is generally fixed at the top of the drying oven. When the exhaust device is not working, external dust may enter the inside of the drying oven through the exhaust device. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides an exhaust device for an agricultural machinery V-belt oven, which has the advantages of preventing dust from passing through and avoiding heat loss of the drying oven caused by too fast rotation of the fan, and solves the above technical problems.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solution: An exhaust device for an agricultural machinery V-belt oven, comprising: a connecting pipe, within which a limiting plate is fixedly installed; above the limiting plate, a conduit is fixedly installed; at the front end of the conduit, an elbow pipe is fixedly installed; on the left side of the conduit, a PLC controller is fixedly installed; within the conduit, a flow guiding plate is fixedly installed; below the limiting plate, a fixing plate is fixedly installed; through the fixing plate, fixing bolts are inserted; between the fixing plate and the limiting plate, a limiting frame is fixedly installed; within the limiting frame, a fixing frame is fixedly installed; within the fixing frame, a brushless motor is fixedly installed; above the rotating shaft of the brushless motor, a fan blade is fixedly installed; below the fixing plate, a humidity sensor is fixedly installed; the PLC controller can adjust the rotation speed of the brushless motor according to the monitoring data of the humidity sensor.

[0009] As a preferred technical solution of the present utility model, a convex structure is provided on the outer side of the upper end of the connecting pipe, and screws are inserted through the four corners of the connecting pipe; on the surface of the limiting plate, opening structures matching the inner diameter of the limiting frame are symmetrically arranged before and after with the center of the limiting plate as the reference; the limiting plate can support the conduit.

[0010] As a preferred technical solution of the present utility model, the conduit has a "T" - shaped structure, the elbow pipes are symmetrically installed before and after with the center of the conduit as the reference on the front and back sides of the conduit, one end of the elbow pipe is communicated with the conduit, and the other end of the elbow pipe faces downward; the conduit can facilitate the airflow to enter the inner parts of the elbow pipes on both sides of the conduit.

[0011] As a preferred technical solution of the present utility model, arc - shaped structures that are mirror - symmetric are provided on the front and back sides of the flow guiding plate, the flow guiding plate is fixedly installed at the center of the top surface of the inner cavity of the conduit, and the fixing bolts vertically penetrate through the fixing plate and are connected to the limiting plate; the flow guiding plate can facilitate guiding the airflow into the inner part of the elbow pipe.

[0012] As a preferred technical solution of the present utility model, the limiting frame is symmetrically installed before and after with the center of the limiting plate as the reference below the limiting plate, and the fixing bolts vertically penetrate through the four corners of the limiting frame; the limiting frame can limit the position of the fixing frame.

[0013] As a preferred technical solution of the present utility model, the limiting frame is fixed between the limiting plate and the fixing plate through the fixing bolts, and the brushless motor is fixedly installed at the center of the limiting frame through the fixing frame; the brushless motor can drive the fan blade to rotate.

[0014] As a preferred technical solution of the present utility model, the fan blade is fixedly connected to the rotating shaft of the brushless motor in an inserted manner, and the humidity sensor is fixedly installed at the center of the fixing plate; the humidity sensor can monitor the humidity inside the drying box cavity.

[0015] Compared with the prior art, the utility model provides an exhaust device for an agricultural machinery V-belt oven, which has the following beneficial effects:

[0016] 1. Through the setting of the humidity sensor in the utility model, the humidity sensor is fixedly installed at the center of the fixing plate. After the device is installed on the top of the drying box, the bottom end of the humidity sensor is located inside the drying box. The humidity sensor can monitor the humidity inside the drying box cavity and transmit the data to the PLC controller. By setting the humidity threshold value through the PLC controller, when the monitored data exceeds the set threshold value, the brushless motor is started. The brushless motor can drive the fan blade to rotate, and the fan blade can generate an upward vertical airflow when rotating, so as to export the air inside the drying box. At the same time, the PLC controller can compare the monitored data with the threshold value, and increase the rotation speed of the brushless motor when the monitored data exceeds the threshold value. This way can avoid the situation that the exhaust device works continuously, resulting in the rapid loss of the temperature inside the drying box and affecting the drying efficiency of the drying box.

[0017] 2. Through the setting of the elbow in the utility model, the elbows are symmetrically installed on the front and rear sides of the conduit with the center of the conduit as the reference. One end of the elbow is communicated with the conduit, and the other end of the elbow faces downward. At the same time, arc surface structures that are mirror-symmetric are arranged on the front and rear sides of the flow guide plate. The flow guide plate is fixedly installed at the center of the top surface inside the conduit. The flow guide plate can facilitate guiding the airflow into the elbow. This way can avoid dust from entering the drying box through the exhaust device while minimizing the influence on the gas flow rate as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a schematic diagram of the installation structure of the connecting pipe and the limiting plate of the utility model;

[0020] Figure 3 is a schematic diagram of the cross-sectional structure of the conduit of the utility model;

[0021] Figure 4 is a schematic diagram of the installation structure of the limiting frame of the utility model;

[0022] Among them: 1. Connecting pipe; 11. Limiting plate; 12. Conduit; 13. Elbow; 14. PLC controller; 15. Flow guide plate; 16. Fixing plate; 17. Fixing bolt; 18. Limiting frame; 19. Fixing frame; 110. Brushless motor; 111. Fan blade; 112. Humidity sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, an exhaust device for an agricultural machinery V-belt oven includes: a connecting pipe 1, a limiting plate 11 is fixedly installed inside the connecting pipe 1, a conduit 12 is fixedly installed above the limiting plate 11, an elbow 13 is fixedly installed at the front end of the conduit 12, a PLC controller 14 is fixedly installed on the left side of the conduit 12, a flow guide plate 15 is fixedly installed inside the conduit 12, a fixing plate 16 is fixedly installed below the limiting plate 11, a fixing bolt 17 is inserted and installed below the fixing plate 16, a limiting frame 18 is fixedly installed between the fixing plate 16 and the limiting plate 11, a fixing frame 19 is fixedly installed inside the limiting frame 18, a brushless motor 110 is fixedly installed inside the fixing frame 19, a fan blade 111 is fixedly installed above the rotating shaft of the brushless motor 110, and a humidity sensor 112 is fixedly installed below the fixing plate 16.

[0027] A convex structure is provided on the outer side of the upper end of the connecting pipe 1, and screws are inserted and installed at the four corners of the connecting pipe 1. Open-hole structures matching the inner diameter of the limit frame 18 are symmetrically arranged on the front and back of the surface of the limit plate 11 with the center of the limit plate 11 as the reference. The conduit 12 is in a "T" - shaped structure. The elbow pipes 13 are symmetrically installed on the front and back sides of the conduit 12 with the center of the conduit 12 as the reference. One end of the elbow pipe 13 is communicated with the conduit 12, and the other end of the elbow pipe 13 faces downward. Arc - shaped structures that are mirror - symmetric are provided on the front and back sides of the flow - guiding plate 15. The flow - guiding plate 15 is fixedly installed at the center of the top surface of the inner cavity of the conduit 12. The fixing bolt 17 vertically penetrates through the fixing plate 16 and is connected to the limit plate 11.

[0028] The limit frame 18 is symmetrically installed below the limit plate 11 with the center of the limit plate 11 as the reference. The fixing bolt 17 vertically penetrates through the four corners of the limit frame 18. The limit frame 18 is fixed between the limit plate 11 and the fixing plate 16 through the fixing bolt 17. The brushless motor 110 is fixedly installed at the center of the limit frame 18 through the fixing frame 19. The fan blade 111 is fixedly connected to the rotating shaft of the brushless motor 110 in an inserted manner. The humidity sensor 112 is fixedly installed at the center of the fixing plate 16.

[0029] Specifically, the connecting pipe 1 can facilitate the fixation of the device on the top of the drying box. The limit plate 11 can support the conduit 12. The conduit 12 can facilitate the airflow to enter the inner parts of the elbow pipes 13 on the front and back sides of the conduit 12. The elbow pipes 13 can prevent dust from entering the inside of the conduit 12. The PLC controller 14 can adjust the rotation speed of the brushless motor 110 according to the monitoring data of the humidity sensor 112. The flow - guiding plate 15 can facilitate the guiding of the airflow into the inner part of the elbow pipe 13. The fixing plate 16 can limit the position of the limit frame 18. The fixing bolt 17 can limit the distance between the fixing plate 16 and the limit plate 11. The limit frame 18 can limit the position of the fixing frame 19. The fixing frame 19 can fix the brushless motor 110 at the center of the limit frame 18. The brushless motor 110 can drive the fan blade 111 to rotate. The fan blade 111 can generate an upward - vertical airflow when rotating. The humidity sensor 112 can monitor the humidity inside the drying box.

[0030] In use, the humidity sensor 112 is fixedly installed at the center of the fixed plate 16. After the device is installed at the top of the drying oven, the bottom end of the humidity sensor 112 is located inside the drying oven. The humidity sensor 112 can monitor the humidity inside the drying oven cavity and transmit the data to the PLC controller 14. The humidity threshold is set through the PLC controller 14. When the monitored data exceeds the set threshold, the brushless motor 110 is started. The brushless motor 110 can drive the fan blade 111 to rotate. When the fan blade 111 rotates, it can generate an upward vertical airflow, thereby discharging the air inside the drying oven. At the same time, the PLC controller 14 can compare the monitored data with the threshold. When the monitored data exceeds the threshold, the rotation speed of the brushless motor 110 increases. This method can avoid the situation that the exhaust device works continuously, resulting in a rapid loss of the internal temperature of the drying oven and affecting the drying efficiency of the drying oven. The elbow 13 is symmetrically installed on the front and back sides of the conduit 12 with the center of the conduit 12 as the reference. One end of the elbow 13 is communicated with the conduit 12, and the other end of the elbow 13 faces downward. At the same time, arc surface structures that are mirror-symmetric are provided on the front and back sides of the flow guide plate 15. The flow guide plate 15 is fixedly installed at the center of the inner cavity top surface of the conduit 12. The flow guide plate 15 can facilitate guiding the airflow into the inside of the elbow 13. This method can avoid dust from entering the inside of the drying oven through the exhaust device while minimizing the impact on the gas flow rate as much as possible.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust device for an agricultural machinery triangular belt oven, characterized in that: include: A connecting pipe (1), a limiting plate (11) is fixedly installed inside the connecting pipe (1), a conduit (12) is fixedly installed above the limiting plate (11), a curved pipe (13) is fixedly installed at the front end of the conduit (12), a PLC controller (14) is fixedly installed on the left side of the conduit (12), a guide plate (15) is fixedly installed inside the conduit (12), a fixing plate (16) is fixedly installed below the limiting plate (11), a fixing bolt (17) is inserted and installed below the fixing plate (16), a limiting frame (18) is fixedly installed between the fixing plate (16) and the limiting plate (11), a fixing frame (19) is fixedly installed inside the limiting frame (18), a brushless motor (110) is fixedly installed inside the fixing frame (19), a fan blade (111) is fixedly installed above the rotating shaft of the brushless motor (110), and a humidity sensor (112) is fixedly installed below the fixing plate (16).

2. The exhaust device for agricultural machinery triangular belt oven according to claim 1, characterized in that: A protruding structure is provided on the outer side of the upper end of the connecting tube (1), and screws are inserted and installed at the four corners of the connecting tube (1). The surface of the limiting plate (11) is symmetrically provided with an opening structure matching the inner diameter of the limiting frame (18) with the center of the limiting plate (11) as a reference.

3. The exhaust device for agricultural machinery V-belt oven according to claim 1, characterized in that: The conduit (12) is in a T-shaped structure, and the curved pipe (13) is symmetrically installed on the front and rear sides of the conduit (12) with the center of the conduit (12) as a reference, one end of the curved pipe (13) is connected to the conduit (12), and the other end of the curved pipe (13) faces downward.

4. The exhaust device for agricultural machinery V-belt oven according to claim 1, characterized in that: The guide plate (15) is provided with mirror-symmetrical curved surface structures on both the front and rear sides. The guide plate (15) is fixedly installed at the center of the top surface of the inner cavity of the conduit (12). The fixing bolt (17) vertically penetrates the fixing plate (16) and is connected to the limiting plate (11).

5. The exhaust device for agricultural machinery triangular belt oven according to claim 1, characterized in that: The limiting frame (18) is installed below the limiting plate (11) symmetrically front and back with the center of the limiting plate (11) as a reference, and the fixing bolts (17) vertically penetrate the limiting frame (18) at the four corners of the limiting frame (18).

6. The exhaust device for agricultural machinery triangular belt oven according to claim 1, characterized in that: The limiting frame (18) is fixed between the limiting plate (11) and the fixing plate (16) via fixing bolts (17), and the brushless motor (110) is fixedly mounted at the center of the limiting frame (18) via a fixing frame (19).

7. The exhaust device for agricultural machinery triangular belt oven according to claim 1, characterized in that: The fan blade (111) is fixedly connected to the rotating shaft of the brushless motor (110) in an interlaced manner, and the humidity sensor (112) is fixedly mounted at the center of the fixing plate (16).

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