A hot air recovery device for a dryer

Abstract

This utility model relates to the field of dryer technology, specifically a hot air recovery device for a dryer, comprising: a hot air blower and a filter box. The hot air blower is installed on the side of the dryer's material hopper. A return air pipe is connected to the top of the filter box, and the bottom of the filter box is connected to the inlet pipe of the hot air blower via a connecting pipe. The side of the filter box is open, and a slot is provided on the side wall of the open side of the filter box. A storage box is provided in the filter box via a connecting assembly. By fitting a sealing gasket to the storage box and the mounting block, the filter core layer is laid in the storage box, and then the storage box is inserted into the filter box. Rotating the pressure plate pushes the U-shaped insert downward, so that the side wall of the U-shaped insert engages with the cover plate to fix the position of the cover plate while ensuring that the cover plate squeezes the sealing gasket tightly. The operation is simple, and the storage box with the filter core layer can be quickly installed and removed in the filter box, facilitating the cleaning and replacement of the filter core layer.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, specifically to a hot air recovery device for a dryer. Background Technology

[0002] Chinese patent document CN217330633U discloses a high-efficiency and energy-saving hopper dryer with a hot air recovery device. The dryer includes a storage hopper and a hot air blower used in conjunction with the storage hopper. The hot air blower is mounted on the outside of the storage hopper via a mounting bracket. A discharge hopper is connected to the bottom of the storage hopper. An air inlet pipe is connected to the air inlet of the hot air blower. An air supply pipe is connected between the air outlet of the hot air blower and the upper outer wall of the storage hopper. An exhaust pipe is connected to the top of the storage hopper. This invention, by setting up a hot air recovery component, allows the hot air after heat exchange with the material to be discharged through the exhaust pipe. Air with a certain temperature can be sent to a filter box through a first recovery pipe. After being filtered and adsorbed by the filter layer and activated carbon adsorption layer in the filter box, the air is then sent to the air inlet pipe through a second recovery pipe and re-enters the hot air blower for reuse. This effectively reduces hot air waste and energy consumption.

[0003] However, in the above solution, a hot air blower is fixedly mounted on the side of the dryer via a bracket. The hot air blower's air supply pipe is connected to the dryer's storage tank, and a return air pipe is connected to the storage tank. The return air pipe is connected to a filter box, and a connecting pipe on the other side of the filter box is connected to the hot air blower's inlet pipe. After the hot air blower delivers hot air to the dryer's storage tank to dry the material, the hot air flows into the return air pipe, passes through the filter core layer set in the filter box, and then flows into the hot air blower's inlet pipe to achieve hot air recovery. During operation, after the filter box has been used for a long time, the entire filter box needs to be disassembled for cleaning and replacement of the filter core layer, which is cumbersome and inconvenient and needs to be improved and optimized. Utility Model Content

[0004] The purpose of this invention is to provide a hot air recovery device for a dryer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot air recovery device for a dryer, comprising: a hot air blower and a filter box; the hot air blower is installed on the side of the dryer's material hopper; a return air pipe is connected to the top of the filter box and is connected to the dryer's material hopper; the bottom of the filter box is connected to the hot air blower's air inlet pipe via a connecting pipe; the side of the filter box is open, and a slot is provided on the side wall of the open side of the filter box; the filter box is provided with a storage box via a connecting assembly, and the connecting assembly includes a sealing gasket, a boss, a U-shaped insert plate, and a pressure plate.

[0006] Preferably, the storage box is inserted into the filter box, the bottom wall of the storage box has equidistant air holes, the storage box is lined with a filter core layer, the side wall of the storage box is fixed with a cover plate, and the inner walls of both sides of the filter box are symmetrically provided with mounting grooves.

[0007] Preferably, mounting blocks are symmetrically fixed on both sides of the storage box, the mounting blocks are inserted into the mounting grooves, the cover plate is embedded in the slots, and the sealing gasket is sleeved with the storage box and the mounting blocks.

[0008] Preferably, the cover plate has grooves at equal intervals on its side wall, a first magnetic block is fixedly embedded in the bottom wall of the groove, and a second magnetic block is fixed at equal intervals on the side wall of the sealing gasket. The second magnetic block is embedded in the groove and attracts the first magnetic block.

[0009] Preferably, the boss is fixedly installed at the top of the filter box, trapezoidal guide blocks are symmetrically fixedly installed on the side wall of the boss, trapezoidal guide grooves are symmetrically opened on the side wall of the U-shaped insert plate, the trapezoidal guide blocks and the trapezoidal guide grooves are movably engaged, the end of the U-shaped insert plate is set with an inclined surface, and the U-shaped insert plate is engaged with the cover plate.

[0010] Preferably, rollers are rotatably provided on the side wall of the U-shaped insert plate, and a pressure plate is rotatably provided on the boss, with the pressure plate engaging with the rollers and the side wall of the U-shaped insert plate.

[0011] Preferably, a sliding groove is provided on the side wall of the boss, a protrusion is fixedly provided on the side wall of the boss, a knob screw is threadedly connected to the side wall of the protrusion, an L-shaped locking plate is rotatably provided at the end of the knob screw, the L-shaped locking plate is movably locked in the sliding groove, and the L-shaped locking plate is locked with the pressure plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By connecting the sealing gasket to the storage box and mounting block, the filter core layer is laid inside the storage box, and then the storage box is inserted into the filter box. Rotating the pressure plate pushes the U-shaped insert downwards, so that the side wall of the U-shaped insert engages with the cover plate to fix the position of the cover plate while ensuring that the cover plate squeezes the sealing gasket tightly. The operation is simple, and the storage box with the filter core layer can be quickly installed and removed in the filter box, which facilitates the cleaning and replacement of the filter core layer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of the filter box structure of this utility model.

[0016] Figure 3 This utility model Figure 2 A magnified view of a portion of the image;

[0017] Figure 4This is a schematic diagram of the structure and connection of the storage box of this utility model;

[0018] Figure 5 This is a schematic diagram of the U-shaped insert structure connection of this utility model.

[0019] In the diagram: 1. Hot air blower; 2. Filter box; 3. Return air duct; 4. Slot; 5. Storage box; 6. Cover plate; 7. Mounting slot; 8. Mounting block; 9. Embedded groove; 10. First magnetic block; 11. Sealing gasket; 12. Second magnetic block; 13. Boss; 14. Trapezoidal guide block; 15. U-shaped insert plate; 16. Trapezoidal guide groove; 17. Roller; 18. Pressure plate; 19. Slide groove; 20. Protrusion; 21. Knob screw; 22. L-shaped clamping plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-5 The present invention provides the following two preferred embodiments:

[0022] Example 1: A hot air recovery device for a dryer includes: a hot air blower 1 and a filter box 2. The hot air blower 1 is installed on the side of the dryer's material hopper. A return air pipe 3 is connected to the top of the filter box 2 and is connected to the dryer's material hopper. The bottom of the filter box 2 is connected to the air inlet pipe of the hot air blower 1 through a connecting pipe for hot air recovery. The side of the filter box 2 is open for the installation of a storage box 5. A slot 4 is provided on the open side wall of the filter box 2. The storage box 5 is installed in the filter box 2 through a connecting assembly. The storage box 5 is inserted into the filter box 2. Air holes are provided at equal intervals on the bottom wall of the storage box 5 for hot air flow. A filter core layer is laid inside the storage box 5 to filter the hot air. A cover plate 6 is fixedly installed, and mounting grooves 7 are symmetrically opened on the inner walls of both sides of the filter box 2. Mounting blocks 8 are symmetrically fixedly installed on the inner walls of both sides of the storage box 5. The mounting blocks 8 are inserted into the mounting grooves 7, and the cover plate 6 is embedded in the slots 4 for positioning and installation of the storage box 5. The sealing gasket 11 is sleeved with the storage box 5 and the mounting blocks 8 to seal and prevent hot air leakage. The side wall of the cover plate 6 is provided with grooves 9 at equal intervals. A first magnetic block 10 is fixedly embedded in the bottom wall of the groove 9. A second magnetic block 12 is fixedly fixed at equal intervals on the side wall of the sealing gasket 11. The second magnetic block 12 is embedded in the groove 9. The second magnetic block 12 and the first magnetic block 10 attract each other, so that the sealing gasket 11 fits against the side of the cover plate 6 for easy installation of the sealing gasket 11.

[0023] In use, attach the sealing gasket 11 to the storage box 5 and the mounting block 8 until the sealing gasket 11 is inserted into the cover plate 6, and the second magnet 12 is embedded in the groove 9, attracting the first magnet 10 to fix the position of the sealing gasket 11. Then, lay the filter core layer inside the storage box 5, and insert the mounting block 8 into the mounting groove 7. Insert the storage box 5 into the filter box 2 until the sealing gasket 11 is engaged with the slot 4, and then fix the position of the cover plate 6 so that the cover plate 6 squeezes the sealing gasket 11 tightly. This completes the installation of the storage box 5. Hot air... The air supply pipe of machine 1 is connected to the dryer storage tank. When hot air blower 1 is working, it delivers hot air to the dryer storage tank through the air supply pipe to dry the material. At the same time, the hot air flows through the return air pipe 3, passes through the filter core layer laid in the storage box 5 inside the filter box 2, and then flows through the air hole at the bottom of the storage box 5 through the connecting pipe into the air inlet pipe of hot air blower 1 to achieve hot air recovery. Because the filter core layer is laid in the storage box 5 which can be quickly disassembled, there is no need to disassemble the entire filter box, which facilitates the cleaning and replacement of the filter core layer.

[0024] Example 2: Based on Example 1, the boss 13 is fixedly installed at the top of the filter box 2. Trapezoidal guide blocks 14 are symmetrically fixed on the side wall of the boss 13. Trapezoidal guide grooves 16 are symmetrically opened on the side wall of the U-shaped insert plate 15. The trapezoidal guide blocks 14 and the trapezoidal guide grooves 16 are movably engaged, so that the U-shaped insert plate 15 is movably installed on the side of the boss 13. The end of the U-shaped insert plate 15 is set at an angle to play a guiding role. The U-shaped insert plate 15 is engaged with the cover plate 6 to fix the position of the cover plate 6 and ensure the stable installation of the storage box 5. Rollers 17 are rotatably installed on the side wall of the U-shaped insert plate 15, and pressure plates 18 are rotatably installed on the boss 13. The pressure plate 18 is engaged with the roller 17 and the side wall of the U-shaped insert plate 15, which facilitates the pressure plate 18 to push the U-shaped insert plate 15 downward. The side wall of the boss 13 is provided with a sliding groove 19, and a protrusion 20 is fixedly provided on the side wall of the boss 13. A knob screw 21 is threadedly connected to the side wall of the protrusion 20. An L-shaped locking plate 22 is rotatably provided at the end of the knob screw 21. Rotating the knob screw 21 can push the L-shaped locking plate 22 to move. The L-shaped locking plate 22 is movably engaged in the sliding groove 19 to ensure that the L-shaped locking plate 22 moves horizontally and linearly. The L-shaped locking plate 22 is engaged with the pressure plate 18 to fix the position of the pressure plate 18 and prevent it from rotating.

[0025] During use, before installing the storage box 5, support the U-shaped insert plate 15. After inserting the filter core layer into the filter box 2, release the U-shaped insert plate 15. The inclined surface at the end of the U-shaped insert plate 15 abuts against the side of the cover plate 6, and the pressure plate 18 abuts against the roller 17 on the U-shaped insert plate 15. Then, rotate the pressure plate 18 to push the U-shaped insert plate 15 downwards, while the side of the cover plate 6 moves along the inclined surface of the U-shaped insert plate 15, thereby pushing the cover plate 6 to squeeze the sealing gasket 11, ensuring a tight seal during the installation of the storage box 5. The sealing effect continues until the pressure plate 18 engages with the side wall of the U-shaped insert plate 15. At this point, the trapezoidal guide block 14 moves to the end of the trapezoidal guide groove 16, and the side wall of the U-shaped insert plate 15 engages with the cover plate 6 to fix the position of the cover plate 6. Rotating the knob screw 21 pushes the L-shaped clamping plate 22 to move along the slide groove 19 until the L-shaped clamping plate 22 engages with the pressure plate 18 to fix the position of the pressure plate 18, ensuring the stability of the storage box 5 installation. The operation is simple, enabling quick installation of the storage box 5 and facilitating the cleaning and replacement of the filter core layer.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot air recovery device of a dryer, comprising: Hot air blower (1) and filter box (2). The hot air blower (1) is installed on the side of the dryer hopper. The top of the filter box (2) is connected to a return air pipe (3). The return air pipe (3) is connected to the dryer hopper. The bottom of the filter box (2) is connected to the air inlet pipe of the hot air blower (1) through a connecting pipe. The filter box (2) is characterized by having an opening at one end, and a slot (4) is provided on the side wall of the opening of the filter box (2). The filter box (2) is provided with a storage box (5) through a connecting component. The connecting component includes a sealing gasket (11), a boss (13), a U-shaped insert (15), and a pressure plate (18).

2. A hot air recovery device for a dryer according to claim 1, characterized in that: The storage box (5) is inserted into the filter box (2). The bottom wall of the storage box (5) is provided with air holes at equal intervals. The storage box (5) is filled with a filter core layer. The side wall of the storage box (5) is fixed with a cover plate (6). The inner walls on both sides of the filter box (2) are symmetrically provided with mounting grooves (7).

3. A hot air recovery device for a drying machine according to claim 2, characterized in that: The storage box (5) has symmetrically fixed mounting blocks (8) on both sides. The mounting blocks (8) are inserted into the mounting groove (7), the cover plate (6) is embedded in the slot (4), and the sealing gasket (11) is sleeved with the storage box (5) and the mounting blocks (8).

4. A hot air recovery device for a drying machine according to claim 3, characterized in that: The cover plate (6) has grooves (9) equidistantly provided on its side wall. A first magnetic block (10) is fixedly embedded in the bottom wall of the groove (9). A second magnetic block (12) is fixedly fixed in the side wall of the sealing gasket (11) at equal intervals. The second magnetic block (12) is embedded in the groove (9) and the second magnetic block (12) and the first magnetic block (10) attract each other.

5. The hot air recovery device of a dryer according to claim 1, characterized in that: The boss (13) is fixedly installed at the top of the filter box (2). Trapezoidal guide blocks (14) are symmetrically fixed on the side wall of the boss (13). Trapezoidal guide grooves (16) are symmetrically opened on the side wall of the U-shaped insert plate (15). The trapezoidal guide blocks (14) and the trapezoidal guide grooves (16) are movably engaged. The end of the U-shaped insert plate (15) is set with an inclined surface. The U-shaped insert plate (15) is engaged with the cover plate (6).

6. A hot air recovery device for a drying machine according to claim 5, characterized in that: Rollers (17) are rotatably mounted on the side wall of the U-shaped insert (15), and pressure plate (18) is rotatably mounted on the boss (13). Pressure plate (18) is engaged with rollers (17) and the side wall of U-shaped insert (15).

7. A hot air recovery device for a drying machine according to claim 6, characterized in that: The boss (13) has a sliding groove (19) on its side wall. A protrusion (20) is fixedly installed on the side wall of the boss (13). A knob screw (21) is threadedly connected to the side wall of the protrusion (20). An L-shaped clamping plate (22) is rotatably installed at the end of the knob screw (21). The L-shaped clamping plate (22) is movably clamped in the sliding groove (19). The L-shaped clamping plate (22) is clamped with the pressure plate (18).

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