Tunnel dryer with pre-blowing structure

Abstract

The utility model relates to tunnel type drying -machine technical field especially relates to a tunnel type drying -machine with pre -blowing structure. The tunnel type drying -machine with pre -blowing structure includes: two support frames, air -blower, support subassembly, wind -proof cover, drive assembly, soft cloth curtain, the top fixedly connected with drying -box of two support frames, the inside mounting of drying -box has resistance wire, two support frames'similar one side inside rotatoryly connected with two transmission shafts, two transmission shaft's outside is equipped with conveyer belt, two support frames'similar one side rotatoryly connected with a plurality of rotating rollers, two support frames's bottom end is installed with a plurality of support subassembly, two support frames's top fixedly connected with wind -proof cover one side away from drying -box. The utility model has solved the original equipment because no pre -blowing, dry slow, obvious problem of water stain, promotes work efficiency and product appearance quality and adapts to different height article, expands equipment application range.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel dryers, and in particular to a tunnel dryer with a pre-blowing structure. Background Technology

[0002] The tunnel dryer is a continuous drying equipment that can continuously bake products without interruption, improving production efficiency. It features double-sided chain drive to prevent deviation during transport. The drying oven has segmented heating and independent electrical control for easy operation. The structure mainly consists of a conveyor system and the drying oven. Multi-segment independent PID temperature control ensures uniform temperature within the oven. The conveyor speed is variable frequency-controlled, allowing for flexible adjustment, smooth operation, and high production efficiency.

[0003] Existing tunnel dryers often suffer from problems such as incomplete drying and water stains after drying due to excessive water volume. This is especially true when the object contains machining holes or structural holes. Due to the obstruction effect of these holes, water cannot drain when the hole faces upwards, and when the hole faces downwards or horizontally, the water inside the hole cannot flow out under gravity due to the surface tension of the water. Even after passing through the drying chamber, the water inside the hole cannot be completely removed, resulting in slow drying, obvious water stains after drying, and ultimately affecting work efficiency and product appearance quality.

[0004] Therefore, it is necessary to provide a new tunnel dryer with a pre-blowing structure to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a tunnel dryer with a pre-blowing structure.

[0006] This utility model provides a tunnel dryer with a pre-blowing structure, comprising: two support frames, a blower, support components, a wind shield, a drive component, and a soft cloth curtain. A drying chamber is fixedly connected to the top of the two support frames, and a resistance wire is installed inside the drying chamber. Two conveyor shafts are rotatably connected to the adjacent sides of the two support frames, and a conveyor belt is sleeved on the outside of the two conveyor shafts. Multiple rotating rollers are rotatably connected to the adjacent sides of the two support frames. Multiple support components are installed at the bottom of the two support frames. A wind shield is fixedly connected to the top of the two support frames away from the drying chamber. A sliding rod is slidably connected to the top of the inside of the wind shield, and a connecting frame is fixedly connected to the bottom of the sliding rod. A dotted surface is fixedly connected to one side of the bottom of the connecting frame. On the air outlet, a linear air outlet is fixedly connected to the other side of the bottom of the connecting frame. Four slide rails are fixedly connected to the top of the two support frames inside the wind shield. A stop block is fixedly connected to the bottom of the slide rail. A drive assembly is installed on the top of the wind shield. Soft cloth curtains are installed at the inlet and outlet of the wind shield. A dotted air outlet is installed inside the two support frames directly below the wind shield and at the corresponding position of the dotted air outlet. A linear air outlet is installed inside the two support frames directly below the wind shield and at the corresponding position of the linear air outlet. A conveying duct is fixedly connected to the output end of the blower. A double-headed conveying pipe is fixedly connected to the top of the conveying duct. The output ends of the double-headed conveying pipe are respectively fixedly connected to a first double-headed transmission pipe and a second double-headed transmission pipe.

[0007] Preferably, the support assembly includes support legs, the top ends of the plurality of support legs are fixedly connected to the bottom ends of the two support frames, and the bottom ends of the support legs are equipped with pads, or casters may be installed.

[0008] Preferably, the drive assembly includes a speed regulator, the bottom end of which is fixedly connected to the top end of the wind shield, a threaded rod is rotatably connected to the inner wall of the top end of the wind shield, and a drive motor is installed at the top edge of the support frame.

[0009] Preferably, a servo motor is mounted on the rear support frame, and the drive end of the servo motor is fixedly connected to one end of one of the transmission shafts.

[0010] Preferably, the four corners of the connecting frame are slidably connected to the outside of the multiple slide rails, and the bottom of the four corners of the connecting frame contacts the top of the multiple stops when it slides to the bottom.

[0011] Preferably, the outer side of the threaded rod is threaded to the inner top of the sliding rod, the top of the threaded rod is fixedly connected to the output end of the speed regulator, and the drive end of the drive motor is fixedly connected to the input end of the speed regulator.

[0012] Preferably, the output end of the first double-headed transmission tube is fixedly connected to one end below the dotted air outlet, and the delivery end of the second double-headed transmission tube is fixedly connected to one end below the linear air outlet.

[0013] Preferably, both the first dual-ended transmission tube and the second dual-ended transmission tube are flexible tubes.

[0014] Compared with related technologies, the tunnel dryer with a pre-blowing structure provided by this utility model has the following beneficial effects:

[0015] This invention uses a blower to generate compressed air, which is then transmitted through multiple transmission pipes to point and line air nozzles, blowing the object from above and below. The latex air tube inside the point air nozzle oscillates under the action of pulsed compressed air, causing changes in the size and direction of the blown air. This effectively breaks up water films, especially effective at removing water accumulated inside holes in perforated objects. It solves the problems of slow drying and noticeable water stains caused by the lack of pre-blowing in existing equipment, thus improving work efficiency and product appearance quality.

[0016] This utility model allows for adjustment of the height of dotted and linear air outlets via a drive component inside the wind shield. Through the cooperation of a drive motor, speed regulator, threaded rod, sliding rod, connecting frame, and slide rail, it can adapt to objects of different heights, expanding the applicability of the equipment. Furthermore, soft cloth curtains are installed at the inlet and outlet of the wind shield to stabilize the internal air pressure, making the pre-blowing structure blow more stably, enhancing the drying effect, and making the drying of objects more uniform and thorough. Attached Figure Description

[0017] Figure 1 A schematic diagram of a tunnel dryer with a pre-blowing structure provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shown is a structural schematic of the wind shield.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the image;

[0021] Figure 5 for Figure 1 The diagram shows the structure of the dotted air outlet.

[0022] Figure 6 for Figure 1 The diagram shows the structure of the support frame.

[0023] The following are the labels in the diagram: 1. Support frame; 2. Drying oven; 3. Resistance wire; 4. Conveyor shaft; 5. Servo motor; 6. Conveyor belt; 7. Rotating roller; 8. Support leg; 9. Gasket; 10. Air shield; 11. Sliding rod; 12. Connecting frame; 13. Above the dotted air outlet; 14. Above the linear air outlet; 15. Slide rail; 16. Stop block; 17. Threaded rod; 18. Speed ​​regulator; 19. Drive motor; 20. Soft curtain; 21. Below the dotted air outlet; 22. Below the linear air outlet; 23. Blower; 24. Conveying duct; 25. Double-headed conveying pipe; 26. First double-headed transmission pipe; 27. Second double-headed transmission pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 6 A tunnel dryer with a pre-blowing structure includes: two symmetrically distributed support frames 1, a blower 23 for generating compressed air, a cuboid drying box 2 fixedly connected to the top of the two support frames 1, several sets of resistance wires 3 evenly spaced horizontally inside the drying box 2, two parallel conveyor shafts 4 rotatably connected to the adjacent side of the two support frames 1 via bearings, a servo motor 5 mounted on the rear support frame 1 via bolts, the drive end of the servo motor 5 being keyed to one end of one of the conveyor shafts 4, a conveyor belt 6 for conveying the objects to be dried being sleeved on the outside of the two conveyor shafts 4, and multiple rotating rollers 7 rotatably connected at equal intervals along the conveying direction of the conveyor belt 6 on the adjacent side of the two support frames 1, the outer circumferential surface of the rotating rollers 7 being in contact with the inner surface of the conveyor belt 6.

[0027] Support components: Multiple support components are installed at the four corners of the bottom of the two support frames 1. Each support component includes support legs 8. The top of the multiple support legs 8 is integrally formed with the bottom of the two support frames 1. The bottom of the support legs 8 is fitted with a disc-shaped pad 9 by a threaded connection. Alternatively, casters with self-locking function can be installed according to actual usage requirements.

[0028] A semi-enclosed air shield 10 is bolted to the top of the two support frames 1 on the side away from the drying oven 2. The top of the air shield 10 has a dovetail groove, within which a sliding rod 11 is slidably connected. The bottom of the sliding rod 11 is welded to a connecting frame 12 with a rectangular frame structure. One side of the bottom of the connecting frame 12 is bolted to a dotted air outlet 13, whose outlets are arranged in a circular array. The other side of the bottom of the connecting frame 12 is bolted to... The linear air outlet 14 has an elongated air outlet. The tops of the two support frames 1 are located inside the wind shield 10 and are fixedly connected to four rectangular slide rails 15 by bolts. The bottom of the slide rails 15 is fixedly connected to the stop blocks 16 by threaded connection. The four corners of the connecting frame 12 are provided with sliding grooves that are compatible with the slide rails 15. The four corners of the connecting frame 12 are slidably connected to the outside of the multiple slide rails 15. When the bottom of the four corners of the connecting frame 12 slides to the bottom, it contacts the tops of the multiple stop blocks 16.

[0029] The drive assembly is bolted to the top of the wind shield 10. The drive assembly includes a speed controller 18. The bottom end of the speed controller 18 is bolted to the top of the wind shield 10. A threaded rod 17 is rotatably connected to the inner wall of the top of the wind shield 10 through a bearing. The outer side of the threaded rod 17 is threaded to the inner top of the sliding rod 11. The top of the threaded rod 17 is connected to the output end of the speed controller 18 by a coupling. A drive motor 19 is bolted to the top edge of the support frame 1. The drive end of the drive motor 19 is belt-driven to the input end of the speed controller 18.

[0030] The soft fabric curtain 20 and the inlet and outlet of the wind shield 10 are both installed with soft fabric curtain 20 via Velcro. The soft fabric curtain 20 is composed of multiple layers of PVC strip slats. The interior of the two support frames 1 is located directly below the wind shield 10 and corresponds to the position of the dotted air outlet 13. The lower part of the dotted air outlet 21 is installed with bolts at the position of the upper part of the two support frames 1 and corresponds to the position of the upper part of the linear air outlet 14. The lower part of the linear air outlet 22 is installed with bolts at the output end of the blower 23 via a flange. The air supply duct 24 has a double-ended delivery pipe 25 fixedly connected to its top end via a tee connector. The output ends of the double-ended delivery pipe 25 are respectively fixedly connected to a first double-ended transmission pipe 26 and a second double-ended transmission pipe 27 via flanges. The output end of the first double-ended transmission pipe 26 is flanged to one end of the dotted air outlet 21, and the delivery end of the second double-ended transmission pipe 27 is flanged to one end of the linear air outlet 22. Both the first double-ended transmission pipe 26 and the second double-ended transmission pipe 27 are flexible rubber hoses.

[0031] The working principle of the tunnel dryer with pre-blowing structure provided by this utility model is as follows:

[0032] When the equipment starts, the servo motor 5 operates, driving the conveyor shaft 4 to rotate. The rotation of the conveyor shaft 4 causes the conveyor belt 6 to start working, and objects can be placed on the conveyor belt 6. With the transmission of the conveyor belt 6, the objects are transported. At the same time, multiple rotating rollers 7 assist the conveyor belt 6 to run smoothly, allowing the objects to be stably transported towards the drying box 2 and the air hood 10. The blower 23 starts running, and the compressed air generated is transmitted through the conveying duct 24, the double-headed conveying pipe 25, and then through the first double-headed transmission pipe 26 and the second double-headed transmission pipe 27 to the point-shaped air outlet 21 and the line-shaped air outlet 22, respectively. At the same time, inside the air hood 10, the drive assembly also works in coordination. The drive motor 19 operates, and after being adjusted by the speed regulator 18, it drives the threaded rod 17 to rotate. The rotation of the threaded rod 17 causes the sliding rod 11 to slide at the top inside the air hood 10, thereby driving the connecting frame 12 to move. The four corners of the connecting frame 12 move along the slide rail. The height of the dotted air nozzle 13 and the linear air nozzle 14 can be adjusted by sliding 15 to accommodate objects of different heights. After adjustment, compressed air will also be transmitted to the dotted air nozzle 13 and the linear air nozzle 14 to blow the objects passing through the wind shield 10 from both above and below. By utilizing the different blowing methods of the dotted air nozzle and the linear air nozzle, the water film on the surface and inside the holes of the objects is efficiently broken up, enhancing the pre-blowing drying effect. The soft cloth curtain 20 at the inlet and outlet of the wind shield 10 can stabilize the internal air pressure. In addition, the latex material blowing tube inside the dotted air nozzle will swing irregularly with a small amplitude under the action of pulsed compressed air, so that the size and direction of the blown air change, which can better remove water accumulated in the holes of different directions, further improving the drying efficiency and ensuring the drying effect and appearance quality of the objects. All components of the entire device work together to meet the high-efficiency drying needs of objects with high humidity or holes.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tunnel dryer with a pre-blowing structure, characterized in that, include: Two support frames (1) and a blower (23) are provided. A drying box (2) is fixedly connected to the top of the two support frames (1). A resistance wire (3) is installed inside the drying box (2). Two conveyor shafts (4) are rotatably connected to the inside of the two support frames (1) on their adjacent sides. A conveyor belt (6) is sleeved on the outside of the two conveyor shafts (4). Multiple rotating rollers (7) are rotatably connected to the adjacent sides of the two support frames (1). Support components, multiple support components are installed at the bottom ends of the two support frames (1); The top of the two support frames (1) is fixedly connected to the side away from the drying box (2). The top of the inner part of the air shield (10) is slidably connected to a sliding rod (11). The bottom of the sliding rod (11) is fixedly connected to a connecting frame (12). One side of the bottom of the connecting frame (12) is fixedly connected to a dotted air outlet (13). The other side of the bottom of the connecting frame (12) is fixedly connected to a linear air outlet (14). The top of the two support frames (1) is fixedly connected to four slide rails (15) inside the air shield (10). The bottom of the slide rails (15) is fixedly connected to a stop block (16). The drive assembly is mounted on the top of the wind shield (10); The inlet and outlet of the soft curtain (20) and the wind shield (10) are both covered with soft curtains (20). The inside of the two support frames (1) is directly below the wind shield (10) and the corresponding position of the dot-shaped air outlet (13) is installed with the dot-shaped air outlet (21). The inside of the two support frames (1) is directly below the wind shield (10) and the corresponding position of the linear air outlet (14) is installed with the linear air outlet (22). The output end of the blower (23) is fixedly connected to the conveying air duct (24). The top end of the conveying air duct (24) is fixedly connected to the double-headed conveying pipe (25). The output end of the double-headed conveying pipe (25) is fixedly connected to the first double-headed transmission pipe (26) and the second double-headed transmission pipe (27).

2. A tunnel dryer with a pre-blowing structure according to claim 1, characterized in that, The support assembly includes support legs (8), the top ends of multiple support legs (8) are fixedly connected to the bottom ends of two support frames (1), and the bottom ends of the support legs (8) are equipped with pads (9) and can also be equipped with casters.

3. A tunnel dryer with a pre-blowing structure according to claim 1, characterized in that, The drive assembly includes a speed regulator (18), the bottom end of which is fixedly connected to the top end of the wind shield (10), and a threaded rod (17) is rotatably connected to the inner wall of the top end of the wind shield (10). A drive motor (19) is installed at the top edge of the support frame (1).

4. A tunnel dryer with a pre-blowing structure according to claim 1, characterized in that, A servo motor (5) is installed on the rear support frame (1), and the drive end of the servo motor (5) is fixedly connected to one end of one of the transmission shafts (4).

5. A tunnel dryer with a pre-blowing structure according to claim 1, characterized in that, The four corners of the connecting frame (12) are slidably connected to the outside of the multiple slide rails (15), and the bottom of the four corners of the connecting frame (12) contacts the top of the multiple stops (16) when it slides to the bottom.

6. A tunnel dryer with a pre-blowing structure according to claim 3, characterized in that, The outer part of the threaded rod (17) is threaded to the inner part of the top of the sliding rod (11), the top of the threaded rod (17) is fixedly connected to the output end of the speed regulator (18), and the driving end of the drive motor (19) is fixedly connected to the input end of the speed regulator (18).

7. A tunnel dryer with a pre-blowing structure according to claim 1, characterized in that, The output end of the first double-headed transmission tube (26) is fixedly connected to one end of the dotted air outlet (21), and the delivery end of the second double-headed transmission tube (27) is fixedly connected to one end of the linear air outlet (22).

8. A tunnel dryer with a pre-blowing structure according to claim 1, characterized in that, Both the first double-ended transmission tube (26) and the second double-ended transmission tube (27) are flexible tubes.

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