A hot air recycling mechanism based on a grain dryer

Abstract

The utility model relates to the technical field of grain drying machine discloses a hot -blast recovery mechanism based on grain drying machine, including recovery box, the left side of recovery box is provided with recovery hot -blast mechanism, the inner wall left side of recovery box is provided with filter equipment, the inner bottom wall right side of recovery box is fixedly installed with heating pump, the top wall middle part rotation of recovery box is connected with the movable door, recovery hot -blast mechanism includes the concentration pipe, the bottom of concentration pipe is linked in the left side of recovery box, the bottom wall left and right sides of concentration pipe all are linked with the connecting shell, the bottom of connecting shell is linked with the collection pipe, the top wall right side of recovery box is linked with the delivery pipe. In the utility model, the hot -blast is recovered and draws through the collection pipe, and simultaneously due to the hot -blast having the heat, makes the energy reduction of heating pump consumption, thereby to the hot -blast heating again after again delivery, reaches the effect that the hot -blast recycles, effectively avoided the hot -blast use efficiency decline.

Description

Technical Field

[0001] This utility model relates to the field of grain dryer technology, and in particular to a hot air recovery mechanism based on a grain dryer. Background Technology

[0002] Grain dryers are agricultural machines used to reduce the moisture content of grains to meet safe storage standards. They are applied to the post-harvest processing of wheat, corn, and rice crops. After the wet grains enter the main drying unit, they are broken into a thin layer by the lifting plates and come into full contact with the hot air sent by the hot air system. The hot air transfers heat to the grains through convection heat exchange, causing the moisture to evaporate into water vapor. After processing, the moisture content is reduced to a safe standard, and the grains are discharged by the discharge device.

[0003] Existing grain dryers suffer from several drawbacks. Hot air enters from one side, leading to over-drying of grain near the hot air and under-drying of grain on the other side. Some dryers also enter from the top, making it difficult to dry grain on the bottom filter plates. Furthermore, without a distribution system in the central duct of the drying tower, more hot air is distributed to the area directly in front of the duct outlet, causing grain scorching, while less hot air is available at the base of the outlet, resulting in inadequate drying. Current solutions involve installing air guiding devices, such as curved guide vanes inside the drying chamber, to direct hot air to the front edge and corners of the chamber, creating a hot air vortex and extending the mixing time between grain and hot air. Adjusting vanes can also be installed at bends in the hot air inlet branch ducts to change the direction of the hot air and achieve uniform airflow to the left and right sides of the drying tower. However, some hot air is still directly exhausted, meaning that after entering the drying section, it is directly drawn out by the induced draft fan on the other side, resulting in a short residence time for the hot air within the drying section, reducing its efficiency and wasting energy. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a hot air recovery mechanism based on a grain dryer, which aims to improve the problem of short residence time of hot air inside the dryer in the prior art, thereby reducing the efficiency of hot air use and causing energy waste.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hot air recovery mechanism based on a grain dryer, comprising a recovery box, a hot air recovery mechanism disposed on the left side of the recovery box, a filter mechanism disposed on the left side of the inner wall of the recovery box, a heating pump fixedly installed on the right side of the inner bottom wall of the recovery box, and a movable door rotatably connected to the middle of the top wall of the recovery box; the hot air recovery mechanism comprises a central pipe, the bottom end of the central pipe being connected to the left side of the recovery box, connecting shells being connected to both the left and right sides of the bottom wall of the central pipe, a collection pipe being connected to the bottom of the connecting shell, a conveying pipe being connected to the right side of the top wall of the recovery box, a variable frequency fan being connected to the rear side of the conveying pipe, an air supply pipe being connected to the top of the variable frequency fan, mounting shells being fixedly installed on the upper and lower sides of the rear ends of the two collection pipes and the rear ends of the air supply pipe, a diversion component being disposed on the opposite side of the two collection pipes, and a support component being disposed on the outer wall of the two connecting shells.

[0006] As a further description of the above technical solution:

[0007] The filtration mechanism includes two mounting plates. The outer walls of the two mounting plates are respectively fixedly connected to the upper and lower ends of the left side of the inner wall of the recycling bin. Multiple mounting holes are opened on the adjacent side of the two mounting plates. Filter columns are fixedly installed on the inner walls of the multiple mounting holes. Multiple locking plates are rotatably connected to the right side of the top wall of the recycling bin. Two movable plates are rotatably connected to the top wall of the recycling bin.

[0008] As a further description of the above technical solution:

[0009] The diversion assembly includes two diversion pipes, with one adjacent end of each diversion pipe connected to the opposite side of the two collection pipes, and a discharge valve connected to the rear end of each diversion pipe.

[0010] As a further description of the above technical solution:

[0011] The support assembly includes two support frames, the top of the inner walls of the two support frames are respectively fixedly connected to the bottom of the outer wall of the connecting shell, and multiple connecting seats are fixedly connected to the bottom of the support frames.

[0012] As a further description of the above technical solution:

[0013] A placement rack is fixedly connected to the right side of the recycling bin, and reinforcing plates are fixedly connected to the front and rear ends of the right side of the placement rack.

[0014] As a further description of the above technical solution:

[0015] The hot air recovery mechanism also includes multiple protective rings, which are respectively fixedly connected to the outer wall of the corresponding collection pipe.

[0016] As a further description of the above technical solution:

[0017] The bottom of the recycling bin is fixedly connected to multiple support blocks, all of which are trapezoidal in design.

[0018] As a further description of the above technical solution:

[0019] The filtration mechanism also includes multiple handles, the bottoms of which are fixedly connected to the top of the corresponding movable plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by starting the variable frequency fan and connecting the two connecting shells, hot air is recovered and extracted through the collection pipe. At the same time, because the hot air has heat, the energy consumed by the heating pump is reduced. Thus, the hot air can be reheated and transported through the conveying pipe and the air supply pipe, achieving the effect of hot air recovery and utilization. This effectively avoids the situation of reduced hot air utilization efficiency and improves the energy-saving effect.

[0022] 2. In this utility model, the multiple mounting plates and mounting holes allow multiple filter columns to be installed inside the recovery box, so that the extracted hot air can be filtered by multiple filter columns, reducing the damage caused by impurities in the hot air entering the frequency converter fan, thereby improving the service life of the mechanism. Then, by rotating the locking plate, the movable plate can be disassembled, achieving the effect of convenient disassembly and assembly of the filter columns. Attached Figure Description

[0023] Figure 1 This is a perspective view of a hot air recovery mechanism based on a grain dryer proposed in this utility model;

[0024] Figure 2 This is a front view of a hot air recovery mechanism based on a grain dryer proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the mounting shell of a hot air recovery mechanism based on a grain dryer proposed in this utility model;

[0026] Figure 4 This is a split view of the conveying pipe of a hot air recovery mechanism based on a grain dryer proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of a filtration mechanism based on a hot air recovery mechanism of a grain dryer, as proposed in this utility model.

[0028] Legend:

[0029] 1. Recycling box; 2. Hot air recycling mechanism; 201. Central pipe; 202. Connecting shell; 203. Collection pipe; 204. Mounting shell; 205. Conveying pipe; 206. Variable frequency fan; 207. Air supply pipe; 208. Diverter assembly; 2081. Diverter pipe; 2082. Discharge valve; 209. Support assembly; 2091. Support frame; 2092. Connecting seat; 210. Protective ring; 3. Filtering mechanism; 301. Mounting plate; 302. Mounting hole; 303. Filter column; 304. Locking plate; 305. Movable plate; 306. Handle; 4. Heat pump; 5. Movable door; 6. Placement rack; 7. Reinforcing plate; 8. Support block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0031] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model is provided: a hot air recovery mechanism based on a grain dryer, including a recovery box 1, a hot air recovery mechanism 2 is provided on the left side of the recovery box 1, the hot air recovery mechanism 2 can recover and utilize hot air, thereby reducing energy consumption, a filter mechanism 3 is provided on the left side of the inner wall of the recovery box 1, the filter mechanism 3 is used to filter the recovered hot air and improve its purity, a heating pump 4 is fixedly installed on the right side of the inner bottom wall of the recovery box 1, and a movable door 5 is rotatably connected to the middle of the top wall of the recovery box 1;

[0032] The hot air recovery mechanism 2 includes a central pipe 201, the bottom end of which is connected to the left side of the recovery box 1. The central pipe 201 is used to recover and concentrate airflow. Connecting shells 202 are connected to both the left and right sides of the bottom wall of the central pipe 201. A collecting pipe 203 is connected to the bottom of the connecting shell 202, through which hot air can be guided and recovered. A conveying pipe 205 is connected to the right side of the top wall of the recovery box 1. A variable frequency fan 206 is connected to the rear side of the conveying pipe 205. The top of the variable frequency fan 206... The air supply pipe 207 is connected, so that when the variable frequency fan 206 is started, it outputs the reheated hot air through the delivery pipe 205. The rear ends of the two collection pipes 203 and the rear ends of the air supply pipe 207 are fixedly installed with mounting shells 204, so that the mounting shells 204 are installed on one side of the dryer to complete the recycling of hot air. The two collection pipes 203 are provided with diversion components 208 on the opposite sides, and the outer walls of the two connecting shells 202 are provided with support components 209.

[0033] Specifically, in the hot air recovery mechanism 2, the bottom end of the central pipe 201 is connected to the left side of the recovery box 1 to concentrate the airflow. The bottom of the connecting shell 202, which is connected to the left and right sides of the bottom wall, is connected to the collection pipe 203 to guide the recovered hot air. The rear side of the conveying pipe 205, which is connected to the right side of the top wall of the recovery box 1, is connected to the variable frequency fan 206, and its top end is connected to the air supply pipe 207. After the variable frequency fan 206 is started, it outputs reheated hot air through the conveying pipe 205. The mounting shells 204 on the upper and lower sides of the rear ends of the two collection pipes 203 and the rear ends of the air supply pipe 207 are installed on one side of the dryer to complete the hot air recovery and recycling. A diversion component 208 is provided on the side of the collection pipes 203 that is far away from each other, which can complete the diversion of airflow. A support component 209 is provided on the outer wall of the connecting shell 202, which can provide auxiliary support for the collection pipes 203. The filter mechanism 3 on the left side of the inner wall of the recovery box 1 filters the recovered hot air to improve its purity. The heating pump 4 fixed on the right side of the inner bottom wall heats the air. The movable door 5, which is rotatably connected in the middle of the top wall, can be opened. The whole system realizes the hot air recovery and recycling to reduce energy consumption.

[0034] Reference Figure 1 , Figure 3 and Figure 5 The filtration mechanism 3 includes two mounting plates 301. The outer walls of the two mounting plates 301 are fixedly connected to the upper and lower ends of the left side of the inner wall of the recycling box 1. The filter column 303 can be fixedly installed through the mounting plates 301 and multiple mounting holes 302. Multiple mounting holes 302 are opened on the adjacent side of the two mounting plates 301. The filter column 303 is fixedly installed on the inner wall of the multiple mounting holes 302, so that the filter column 303 can filter the recycled hot air, reduce the damage of impurities contained therein to the impeller inside the variable frequency fan 206, and avoid contamination of the grain. Multiple locking plates 304 are rotatably connected to the right side of the top wall of the recycling box 1, so that the movable plate 305 can be easily opened and closed under the rotation of the locking plates 304. Two movable plates 305 are rotatably connected to the top wall of the recycling box 1.

[0035] Specifically, two mounting plates 301 are fixedly connected to the upper and lower ends of the left side of the inner wall of the recycling bin 1, so that multiple mounting holes 302 opened on the adjacent side of the two mounting plates 301 can be used to fix the filter column 303. The filter column 303 can filter the recycled hot air, thereby reducing the damage of impurities to the impeller inside the variable frequency fan 206 and avoiding contamination of the grain. Then, multiple locking plates 304 rotatably connected to the right side of the top wall of the recycling bin 1 rotate to easily open and close the two movable plates 305 rotatably connected to the top wall.

[0036] Reference Figure 1 , Figure 4 and Figure 5The diversion assembly 208 includes two diversion pipes 2081, with one adjacent end of each diversion pipe 2081 connected to the opposite side of each of the two collection pipes 203. The rear end of each diversion pipe 2081 is connected to a discharge valve 2082. The support assembly 209 includes two support frames 2091, with the top of the inner wall of each support frame 2091 fixedly connected to the bottom of the outer wall of the connecting shell 202. The bottom of each support frame 2091 is fixedly connected to multiple connecting seats 2092. The filter mechanism 3 also includes multiple handles 306, with the bottom of each handle 306 fixedly connected to the top of a corresponding movable plate 305.

[0037] Specifically, by connecting the diversion pipe 2081 and opening the discharge valve 2082, the extraction path can be changed, and by fixing the support frame 2091, the collection pipe 203 can be auxiliaryly supported, thereby improving the stability of the collection pipe 203.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The hot air recovery mechanism 2 also includes multiple protective rings 210, which are fixedly connected to the outer wall of the corresponding collection pipe 203 respectively; multiple support blocks 8 are fixedly connected to the bottom of the recovery box 1, and the multiple support blocks 8 are all trapezoidal in design; a placement rack 6 is fixedly connected to the right side of the recovery box 1, and reinforcing plates 7 are fixedly connected to the front and rear ends of the right side of the placement rack 6.

[0039] Specifically, the connection of multiple protective rings 210 enhances the protection of the outer wall of the collection pipe 203, the support block 8 supports the bottom of the recycling box 1 to ensure support, the placement rack 6 places the grain collection bucket, and the connection of the reinforcing plate 7 further improves the protection effect.

[0040] Working principle: By starting the variable frequency fan 206, hot air is collected and extracted through the collection pipe 203 under the connection of the two connecting shells 202. At the same time, the central pipe 201 can collect and concentrate the airflow. Then the hot air is sent into the recovery box 1. The heating pump 4 on the right side of the bottom wall of the recovery box 1 completes the reheating of the hot air. Since the hot air itself carries heat, the energy consumption of the heating pump 4 is reduced. The reheated hot air is transported through the conveying pipe 205 connected to the right side of the top wall and the air supply pipe 207 connected to the top of the variable frequency fan 206. The mounting shells 204 on the upper and lower sides of the rear ends of the two collection pipes 203 and the rear ends of the air supply pipe 207 are installed on one side of the dryer to complete the hot air recovery and recycling. The filter mechanism 3 on the left side of the inner wall of the recovery box 1 filters the hot air to improve its purity. The movable door 5 connected to the middle of the top wall can be opened. The diversion component 208 on the side away from the collection pipe 203 and the support component 209 on the outer wall of the connecting shell 202 work together to realize the hot air recovery and utilization to reduce energy consumption, avoid the decline in efficiency, and improve the energy saving effect.

[0041] Furthermore, the filter column 303 can be installed by connecting the two mounting plates 301 and the multiple mounting holes 302 on one side of the mounting plates 301. This allows the filter column 303 to be fixed inside the recovery box 1 by the mounting plates 301 and the mounting holes 302. The extracted hot air is filtered by the multiple filter columns 303, thereby reducing the number of impurity particles in the hot air entering the variable frequency fan 206, avoiding damage to the impeller, preventing contamination of the grain, and improving the service life of the mechanism. Then, by rotating the multiple locking plates 304, the movable plate 305 can be easily opened and closed, achieving the purpose of convenient disassembly and assembly of the filter column 303.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A hot air recovery mechanism based on a grain dryer, comprising a recovery box (1), characterized in that: A hot air recovery mechanism (2) is provided on the left side of the recycling box (1), a filter mechanism (3) is provided on the left side of the inner wall of the recycling box (1), a heating pump (4) is fixedly installed on the right side of the inner bottom wall of the recycling box (1), and a movable door (5) is rotatably connected to the middle of the top wall of the recycling box (1). The hot air recovery mechanism (2) includes a central pipe (201), the bottom end of which is connected to the left side of the recovery box (1). The bottom wall of the central pipe (201) is connected to the left and right sides of the connecting shell (202). The bottom of the connecting shell (202) is connected to the collecting pipe (203). The top wall of the recovery box (1) is connected to the conveying pipe (205). The rear side of the conveying pipe (205) is connected to the variable frequency fan (206). The top of the variable frequency fan (206) is connected to the air supply pipe (207). The rear ends of the two collecting pipes (203) and the rear ends of the air supply pipe (207) are fixedly installed with mounting shells (204). The two collecting pipes (203) are provided with diversion components (208) on the opposite sides. The outer walls of the two connecting shells (202) are provided with support components (209).

2. The hot air recovery mechanism based on a grain dryer according to claim 1, characterized in that: The filtration mechanism (3) includes two mounting plates (301). The outer walls of the two mounting plates (301) are respectively fixedly connected to the upper and lower ends of the left side of the inner wall of the recycling box (1). Multiple mounting holes (302) are opened on the adjacent side of the two mounting plates (301). Filter columns (303) are fixedly installed on the inner walls of the multiple mounting holes (302). Multiple locking plates (304) are rotatably connected to the right side of the top wall of the recycling box (1). Two movable plates (305) are rotatably connected to the top wall of the recycling box (1).

3. The hot air recovery mechanism based on a grain dryer according to claim 1, characterized in that: The diversion assembly (208) includes two diversion pipes (2081), with one adjacent end of each diversion pipe (2081) connected to the opposite side of the two collection pipes (203), and the rear end of each diversion pipe (2081) connected to a discharge valve (2082).

4. The hot air recovery mechanism based on a grain dryer according to claim 1, characterized in that: The support assembly (209) includes two support frames (2091), the top of the inner walls of the two support frames (2091) are respectively fixedly connected to the bottom of the outer wall of the connecting shell (202), and a plurality of connecting seats (2092) are fixedly connected to the bottom of the support frame (2091).

5. A hot air recovery mechanism based on a grain dryer according to claim 1, characterized in that: The recycling bin (1) is fixedly connected to a placement rack (6) on the right side, and the front and rear ends of the right side of the placement rack (6) are fixedly connected to reinforcing plates (7).

6. A hot air recovery mechanism based on a grain dryer according to claim 1, characterized in that: The hot air recovery mechanism (2) also includes multiple protective rings (210), which are fixedly connected to the outer wall of the corresponding collection pipe (203).

7. A hot air recovery mechanism based on a grain dryer according to claim 1, characterized in that: The bottom of the recycling bin (1) is fixedly connected to multiple support blocks (8), and all of the multiple support blocks (8) adopt a trapezoidal design.

8. A hot air recovery mechanism based on a grain dryer according to claim 2, characterized in that: The filter mechanism (3) also includes a plurality of handles (306), the bottoms of which are fixedly connected to the top of the corresponding movable plate (305).

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