Corrugated board hot air drying device

Abstract

The corrugated board hot air drying device comprises a drying box, a U-shaped plate is arranged in the drying box, a rotating cylinder is rotationally arranged between the middle of the U-shaped plate and the side wall of the drying box, a plurality of evenly-distributed air blowing openings are formed in the outer arc face of the rotating cylinder, and a plurality of air inlet boxes are arranged on the upper side of the drying box; a conveying frame is arranged in the middle of the drying box, and a driving mechanism is further arranged on the drying box and used for driving the rotating cylinder to rotate. By means of the corrugated board hot air drying device, when the corrugated board hot air drying device is used, hot air drying can be rapidly and efficiently conducted on corrugated boards to be dried from all directions, it can be effectively guaranteed that the corrugated boards are evenly heated, and the drying effect of the corrugated boards is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated cardboard production, in particular to a hot air drying device for corrugated cardboard. Background Art

[0002] Corrugated cardboard is a lightweight, high-strength material widely used in the packaging industry. It is made by combining multiple layers of paper through a special process. During the production of corrugated cardboard, a hot air drying device is one of the core equipment. It is used to quickly evaporate the moisture in the adhesive after the paper is combined, ensuring the strength, flatness and stability of the cardboard after forming.

[0003] The existing corrugated cardboard hot air drying device transports the corrugated cardboard to be dried with hot air through a conveyor belt, so that the corrugated cardboard to be dried with hot air is transported into the interior of a hot air drying box, and then the corrugated cardboard is dried with hot air by the cooperation of a fan and a heater provided in the hot air drying box, thereby achieving the drying work of the corrugated cardboard quickly and efficiently for the convenience of subsequent processing. However, in actual use, during the process of the corrugated cardboard being transported, the blowing angle of the fan is fixed, which results in a fixed angle at which the hot air blows toward the corrugated cardboard, resulting in uneven drying degrees at different positions of the corrugated cardboard during drying, affecting the drying effect of the corrugated cardboard and reducing the drying efficiency of the corrugated cardboard. Summary of the Invention

[0004] In view of this, the present invention addresses the deficiencies of the prior art and provides a corrugated cardboard hot air drying device, which can quickly and efficiently perform hot air drying on the corrugated cardboard to be dried from all directions when in use, effectively ensuring that the corrugated cardboard is evenly heated and effectively improving the drying effect of the corrugated cardboard.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a corrugated cardboard hot air drying device, including a drying box, a U-shaped plate is provided inside the drying box, a rotating drum is rotatably provided between the middle part of the U-shaped plate and the side wall of the drying box, the outer arc surface of the rotating drum is provided with multiple evenly distributed air blowing ports, multiple air inlet boxes are provided on the upper side of the drying box, a conveying rack is provided in the middle of the drying box, and a driving mechanism is also provided on the drying box, the driving mechanism is used to drive the rotation of the rotating drum; multiple supporting legs are provided on the lower surface of the drying box, and rubber pads are bonded and fixed to the lower surfaces of the supporting legs.

[0006] As a further improvement of the present invention, the driving mechanism includes a worm gear fixedly mounted on the outer arc surface of the rotating cylinder, a worm is provided for rotation inside the drying box, the worm is meshingly connected with the worm gear, a servo motor 2 is provided on the outside of the drying box, and the output shaft of the servo motor 2 is fixed to the worm gear by a coupling; a dustproof net is provided at the inner bottom end of each air inlet box, a draft fan can be removably installed on the inner upper side of each air inlet box, a heater is provided on the inner lower side of the air inlet box, and a filter is provided at the inner bottom end of the air inlet box.

[0007] As a further improvement of the present invention, the conveyor frame is provided with multiple rotating shafts inside, and the outer side of each rotating shaft is fixedly provided with symmetrically distributed transmission wheels, and a conveyor belt is provided between the transmission wheels located in the same vertical plane; a servo motor 1 is provided on the outer side of the conveyor frame, and the output shaft of the servo motor 1 is fixed to the adjacent rotating shaft by a coupling; a feed plate is provided on the left side of the conveyor frame, and a discharge plate is provided on the right side of the conveyor frame.

[0008] As a further improvement of the present invention, symmetrically distributed guide rails are provided on the left and right sides of the drying box, a sliding frame is slidingly arranged between the guide rails, a plurality of rotating rods are rotatably arranged on the lower side of the sliding frame, and the outer arc surface of each rotating rod is fixedly sleeved with symmetrically distributed limiting wheels. An electric push rod is provided on the drying box, and the telescopic end of the electric push rod is connected and fixed to the sliding frame.

[0009] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0010] First, the induced draft fan introduces external air into the interior of the drying box, and then the introduced air is heated by the heater through heat exchange to form hot air. Due to the partition effect of the U-shaped plate set inside the drying box, the hot air is evenly blown toward the horizontal center of the rotating cylinder through the blowing port on the outer arc surface of the rotating cylinder, thereby evenly drying the corrugated cardboard with hot air.

[0011] Secondly, the servo motor 2 drives the worm connected to it to rotate, so that the rotating drum drives the air outlets evenly arranged on its outer arc surface to rotate around the horizontal center of the rotating drum, so that the hot air can be blown quickly and evenly from all directions to the horizontal center of the rotating drum through the rotating rotating drum, thereby drying the corrugated cardboard being transported with hot air.

[0012] Third, by controlling the electric push rod, the telescopic end of the electric push rod drives the sliding frame to slide between the guide rails, and then the sliding frame drives the limiting wheel to move downward, and the vertical position of the limiting wheel is adjusted to limit the corrugated cardboard being transported and prevent the corrugated cardboard from moving during transportation.

[0013] Fourthly, during the transportation process, the limiting effect of the limiting wheel on the corrugated cardboard can effectively prevent the corrugated cardboard from moving easily. When the corrugated cardboard to be dried is transported from the conveyor belt into the rotating drum, the rotating drum during the rotation process causes hot air to blow from all directions toward the horizontal center of the rotating drum, thereby drying the corrugated cardboard with hot air. During the drying process, the limiting wheel limits the corrugated cardboard, which can effectively prevent the corrugated cardboard from being blown by the hot air while making the corrugated cardboard straight, thereby preventing the corrugated cardboard from bending due to the drying effect of the hot air on the corrugated cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention;

[0016] Figure 3 This is an enlarged structural diagram of point A of the present invention;

[0017] Figure 4 It is a front view planar structure schematic diagram of the present invention;

[0018] Figure 5 It is a side structural schematic diagram of the present invention.

[0019] In the figure: 101, drying box; 102, supporting leg; 103, conveyor frame; 104, feed plate; 105, discharge plate; 106, rotating shaft; 107, transmission wheel; 108, conveyor belt; 109, servo motor 1; 201, U-shaped plate; 202, rotating cylinder; 203, air outlet; 204, air inlet box; 205, dust screen; 206, induced draft fan; 207, heater; 208, filter; 209, worm gear; 210, worm; 211, servo motor 2; 301, guide rail; 302, sliding frame; 303, rotating rod; 304, limiting wheel; 305, electric push rod. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] like Figure 2 、 4As shown, a hot air drying device for corrugated cardboard includes a drying box 101. A U-shaped plate 201 is provided inside the drying box 101. A rotating drum 202 is rotatably provided between the middle portion of the U-shaped plate 201 and the side wall of the drying box 101. The outer arc surface of the rotating drum 202 is provided with multiple evenly distributed air blowing ports 203. A plurality of air inlet boxes 204 are provided on the upper side of the drying box 101. A conveying frame 103 is provided in the middle portion of the drying box 101. A driving mechanism is also provided on the drying box 101 for driving the rotation of the rotating drum 202. A feed plate 104 is provided on the left side of the conveying frame 103, and a discharge plate 105 is provided on the right side of the conveying frame 103.

[0022] like Figure 3 、 4 As shown, the driving mechanism includes a worm gear 209 fixedly mounted on the outer arc surface of the rotating cylinder 202, a worm 210 is provided for rotation inside the drying box 101, the worm 210 is meshed with the worm gear 209, a servo motor 211 is provided on the outside of the drying box 101, and the output shaft of the servo motor 211 is fixed to the worm gear 210 by a coupling; a dustproof net 205 is provided at the inner bottom end of each air inlet box 204, a draft fan 206 can be detachably installed on the inner upper side of each air inlet box 204, a heater 207 is provided on the inner lower side of the air inlet box 204, and a filter net 208 is provided at the inner bottom end of the air inlet box 204.

[0023] like Figure 1 、 5 As shown, the conveyor frame 103 is internally rotatably provided with a plurality of rotating shafts 106. A symmetrically distributed transmission wheel 107 is fixedly sleeved on the outside of each rotating shaft 106. A conveyor belt 108 is provided between the transmission wheels 107 located in the same vertical plane. A servo motor 109 is provided on the outside of the conveyor frame 103. The output shaft of the servo motor 109 is fixed to the adjacent rotating shaft 106 via a coupling.

[0024] like Figure 2 、 5 As shown, symmetrically distributed guide rails 301 are provided on the left and right sides of the drying box 101, and a sliding frame 302 is slidably provided between the guide rails 301. A plurality of rotating rods 303 are rotatably provided on the lower side of the sliding frame 302. The outer arc surface of each rotating rod 303 is fixedly sleeved with symmetrically distributed limiting wheels 304. An electric push rod 305 is provided on the drying box 101, and the telescopic end of the electric push rod 305 is connected and fixed to the sliding frame 302.

[0025] When in use, the servo motor 109 drives the rotating shaft 106 connected thereto to rotate, thereby driving the conveyor belt 108 arranged between the transmission wheels 107 to rotate, so as to facilitate the conveying of the corrugated cardboard to be dried by hot air;

[0026] By controlling the electric push rod 305, the telescopic end of the electric push rod 305 drives the sliding frame 302 to slide between the guide rails 301, and then the sliding frame 302 drives the limiting wheel 304 to move downward, and the vertical position of the limiting wheel 304 is adjusted to limit the position of the corrugated cardboard being conveyed;

[0027] The induced draft fan 206 draws external air into the drying box 101, and then the heater 207 performs heat exchange on the introduced air to heat it to form hot air, so that the hot air is blown into the drying box 101. Due to the partitioning effect of the U-shaped plate 201 provided inside the drying box 101, the hot air is evenly blown toward the horizontal center of the rotating cylinder 202 through the air outlet 203 on the outer arc surface of the rotating cylinder 202. The servo motor 211 drives the worm 210 connected to it to rotate. The meshing relationship between the worm 210 and the worm gear 209 drives the rotating cylinder 202 where the worm gear 209 is located to rotate, thereby causing the rotating cylinder 202 to drive the air outlets 203 evenly provided on its outer arc surface to rotate around the horizontal center of the rotating cylinder 202. Therefore, the hot air can be blown quickly and evenly from all directions toward the horizontal center of the rotating cylinder 202 through the rotating rotating cylinder 202, thereby performing hot air drying on the conveyed corrugated cardboard.

[0028] The corrugated cardboard to be dried with hot air is placed on the feed plate 104, so that the corrugated cardboard to be dried is transferred from the feed plate 104 to the conveyor belt 108, and the corrugated cardboard to be dried is stably conveyed by the conveyor belt 108 rotating on both sides. During the conveying process, the limiting effect of the corrugated cardboard by the limiting wheel 304 can effectively prevent the corrugated cardboard from moving easily. When the corrugated cardboard to be dried is conveyed from the conveyor belt 108 into the rotating drum 202, the rotating drum 202 causes the hot air to be blown from all directions toward the horizontal center of the rotating drum 202, thereby drying the corrugated cardboard with hot air. During the drying process, the limiting effect of the corrugated cardboard by the limiting wheel 304 can effectively prevent the corrugated cardboard from being blown by the hot air while making the corrugated cardboard straight, thereby preventing the corrugated cardboard from bending due to the drying effect of the hot air on the corrugated cardboard. After drying, the corrugated cardboard is moved from the discharge plate 105 to the next level of processing equipment.

[0029] According to another embodiment of the present invention, Figure 1 、 2 As shown, the drying box 101 is provided with a plurality of legs 102 on the lower surface, and rubber pads are bonded and fixed to the lower surface of the legs 102. When in use, the rubber pads on the lower surface of the legs 102 can effectively increase the friction between the legs and the ground while avoiding wear caused by long-term rigid contact with the ground.

[0030] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A hot air drying device for corrugated cardboard, comprising a drying box (101), characterized in that: A U-shaped plate (201) is provided inside the drying box (101), a rotating drum (202) is rotatably provided between the middle of the U-shaped plate (201) and the side wall of the drying box (101), a plurality of evenly distributed air blowing ports (203) are provided on the outer arc surface of the rotating drum (202), a plurality of air inlet boxes (204) are provided on the upper side of the drying box (101), a conveying rack (103) is provided in the middle of the drying box (101), and a driving mechanism is further provided on the drying box (101), the driving mechanism being used to drive the rotation of the rotating drum (202).

2. The hot air drying device for corrugated cardboard according to claim 1, characterized in that: The driving mechanism comprises a worm wheel (209) fixedly sleeved on the outer arc surface of the rotating cylinder (202); a worm (210) is rotatably provided inside the drying box (101); the worm (210) is meshedly connected with the worm wheel (209); a servo motor 2 (211) is provided outside the drying box (101); an output shaft of the servo motor 2 (211) is fixed to the worm (210) via a coupling.

3. The hot air drying device for corrugated cardboard according to claim 2, characterized in that: A dustproof net (205) is provided at the inner bottom end of each air inlet box (204), a draft fan (206) can be detachably installed on the inner upper side of each air inlet box (204), a heater (207) is provided on the inner lower side of each air inlet box (204), and a filter net (208) is provided at the inner bottom end of each air inlet box (204).

4. The hot air drying device for corrugated cardboard according to claim 1, characterized in that: The conveying frame (103) is internally provided with a plurality of rotating shafts (106), and the outer side of each rotating shaft (106) is fixedly provided with symmetrically distributed transmission wheels (107), and a conveyor belt (108) is provided between the transmission wheels (107) located in the same vertical plane.

5. The hot air drying device for corrugated cardboard according to claim 4, characterized in that: A servo motor 1 (109) is provided on the outer side of the conveying frame (103), and the output shaft of the servo motor 1 (109) is fixed to the adjacent rotating shaft (106) via a coupling.

6. The hot air drying device for corrugated cardboard according to claim 1, characterized in that: A feed plate (104) is provided on the left side of the conveying frame (103), and a discharge plate (105) is provided on the right side of the conveying frame (103).

7. The hot air drying device for corrugated cardboard according to claim 1, characterized in that: The left and right sides of the drying box (101) are both provided with symmetrically distributed guide rails (301), a sliding frame (302) is slidably provided between the guide rails (301), a plurality of rotating rods (303) are rotatably provided on the lower side of the sliding frame (302), and the outer arc surface of each rotating rod (303) is fixedly sleeved with symmetrically distributed limiting wheels (304), and an electric push rod (305) is provided on the drying box (101), and the telescopic end of the electric push rod (305) is connected and fixed to the sliding frame (302).

8. The hot air drying device for corrugated cardboard according to claim 1, characterized in that: The lower surface of the drying box (101) is provided with a plurality of supporting legs (102), and the lower surfaces of the supporting legs (102) are all bonded and fixed with rubber pads.

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