Hot air circulating type mica tape drying machine

Abstract

The utility model discloses a hot -blast circulation formula mica tape drying -machine relates to drying equipment technical field, including support platform, conveying roller, drying -box, hot -blast circulation subassembly and tension adjusting subassembly, the hot -blast circulation subassembly includes hot -blast machine, wind collecting cover, gas pipe and heat collection tank, and the closed loop of recycling the gas with the residual heat in drying -box to hot -blast machine is connected and constitutes the recycling of the gas with the residual heat in drying -box to hot -blast machine again, the tension adjusting subassembly includes support frame, and the sliding block is slidably connected in support frame, and the sliding block is rotatably connected with the rotating rod and the runner fixed in rotating rod, and the support frame still is equipped with the spring, and the spring is abutted between sliding block and support frame to provide elastic buffer. The utility model solves the problem of low heat energy utilization rate and mica tape damage due to improper tension in the prior art, has the beneficial effect of energy -conserving, effectively protecting mica tape and improving drying uniformity.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a hot air circulating mica belt dryer. Background Technology

[0002] Mica, as an important insulating material, is widely used in motors, cables, and other fields. During the production of mica tape, it needs to be dried to remove internal moisture and other volatile substances, ensuring the insulation and mechanical properties of the final product. Traditional drying processes typically involve baking the mica tape in a heating furnace, which is simple in principle but has some inherent technical drawbacks.

[0003] In traditional drying equipment, after hot air heats the mica strip inside the heating chamber, most of the hot air is directly discharged to the outside. This results in a significant waste of thermal energy, low energy utilization, and a substantial increase in production costs. Furthermore, mica strip is a continuous, relatively fragile roll material that requires stable tension to traction as it passes through the drying equipment. Improper tension control can easily cause the mica strip to stretch, deform, wrinkle, or even break, severely impacting product quality and subsequent production processes. These problems are prevalent in existing technologies and have become major bottlenecks restricting the performance improvement of mica strip drying equipment.

[0004] Therefore, this utility model proposes a hot air circulating mica belt dryer to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hot air circulating mica belt dryer, which aims to improve the problems of low thermal energy utilization and easy damage to mica belts due to improper tension control in existing mica belt drying equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hot air circulating mica belt dryer, comprising: a support platform, a first conveying roller, a second conveying roller, a drying box, a conveyor belt, as well as a hot air circulation component and a tension adjustment component; The hot air circulation assembly includes a hot air blower, the air outlet of which is connected to an air collecting hood via a first connecting pipe, and the air collecting hood is connected to the air inlet of the drying chamber; the top of the drying chamber is provided with an air outlet pipe, which is connected to a heat collection box, and the heat collection box is connected to the air inlet of the hot air blower via a second connecting pipe, forming a closed loop that can recover and reuse the waste heat gas in the drying chamber. The tension adjustment assembly includes a support frame, with a sliding block slidably connected inside the support frame; a rotating rod is rotatably connected to the sliding block, with wheels fixedly connected to both ends of the rotating rod; a spring is also provided inside the support frame, with both ends of the spring abutting against the opposing walls inside the sliding block and the support frame, respectively. This combination of structures forms a floating adjustment mechanism that can dynamically buffer and compensate for the tension of the mica tape.

[0007] Preferably, multiple fans are fixedly connected to the inner wall of the drying oven.

[0008] Preferably, the tension adjustment assembly further includes a first conveying rod and a second conveying rod fixedly connected to the support frame and disposed on both sides of the turntable.

[0009] Preferably, the mica belt passes sequentially around the first conveying rod, the outer periphery of the rotating wheel, and the second conveying rod.

[0010] Preferably, the hot air blower is an electrically heated hot air blower.

[0011] Preferably, the support frame has a guide groove inside for accommodating the sliding block.

[0012] Preferably, the air outlet pipe is provided with multiple air inlets evenly distributed along the length of the top of the drying chamber.

[0013] Preferably, the solar collector box is equipped with a structure for filtering and separating water vapor.

[0014] This utility model has the following beneficial effects: 1. This utility model, by setting up a hot air circulation component consisting of a hot air blower, connecting pipe, air collection hood, air outlet pipe and heat collection box, recovers the humid and hot gas with residual heat in the drying box and sends it back to the hot air blower for reuse, solves the problem of low energy utilization and high energy consumption caused by direct hot air emission in the prior art, and achieves the technical effect of recycling waste heat and significantly reducing production energy consumption.

[0015] 2. This utility model solves the problem of mica belt deformation or damage caused by improper control of conveying tension in the prior art by setting a tension adjustment component consisting of a support frame, a sliding block, a rotating wheel and a spring. The rotating wheel drives the sliding block to move with the change of tension and the spring provides elastic buffering. This achieves the technical effect of automatically adjusting the conveying tension, ensuring the structural and dimensional integrity of the mica belt, and improving the quality of the finished product. Attached Figure Description

[0016] Figure 1 This is a perspective view of a hot air circulating mica belt dryer proposed in this utility model; Figure 2 This is a schematic diagram of the drying chamber of a hot air circulating mica belt dryer proposed in this utility model; Figure 3 This is a schematic diagram of the heat collection box of a hot air circulating mica belt dryer proposed in this utility model; Figure 4 This is a schematic diagram of the rotor of a hot air circulating mica belt dryer proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0017] Legend: 1. Support platform; 2. First conveyor roller; 3. Second conveyor roller; 4. Drying box; 5. Conveyor belt; 6. Hot air circulation assembly; 601. Hot air blower; 602. First connecting pipe; 603. Air collector hood; 604. Fan; 605. Air outlet pipe; 606. Heat collection box; 607. Second connecting pipe; 7. Tension adjustment assembly; 701. First conveyor rod; 702. Second conveyor rod; 703. Rotary wheel; 704. Support frame; 705. Rotating rod; 706. Sliding block; 707. Spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0019] Reference Figures 1-5 The present invention provides an embodiment of a hot air circulating mica tape dryer, including a support platform 1, on which a first conveying roller 2 is rotatably connected. The equipment also includes a second conveying roller 3 and a drying box 4 located between the first conveying roller 2 and the second conveying roller 3. The drying box 4 is equipped with a conveyor belt 5. The first conveying roller 2 is used for unwinding the mica tape, the second conveying roller 3 is used for winding the dried mica tape, and the conveyor belt 5 is used to carry the mica tape through the drying box 4. The basic frame of the entire equipment is composed of the support platform 1, the first conveying roller 2, the second conveying roller 3, and the drying box 4, forming the main conveying path of the mica tape from feeding to discharging. To achieve energy-saving drying and tension protection, a hot air circulation component 6 and a tension adjustment component 7 are also included. The hot air circulation component 6 is a structure for achieving high-efficiency energy utilization. This component includes a hot air blower 601. The air outlet of the hot air blower 601 is connected to an air collection hood 603 through a first connecting pipe 602. The air collection hood 603 is connected to the air inlet of the drying chamber 4 and is used to send the hot air generated by the hot air blower 601 into the drying chamber 4. The top of the drying chamber 4 is provided with an air outlet pipe 605. The air outlet pipe 605 is connected to a heat collection box 606. The heat collection box 606 is connected to the air inlet of the hot air blower 601 through a second connecting pipe 607. The heat collection box 606 collects the humid gas with residual heat in the drying chamber 4 and sends it back to the hot air blower 601 through the heat collection box 606, thereby forming a closed hot air circulation loop, which significantly improves the utilization rate of thermal energy. The tension adjustment component 7 is a key structure to ensure the stable quality of the mica belt during the conveying process. This component includes a support frame 704, a sliding block 706 is slidably connected inside the support frame 704, a rotating rod 705 is rotatably connected to the sliding block 706, and rotating wheels 703 are fixedly connected to both ends of the rotating rod 705. A spring 707 is also provided inside the support frame 704. The two ends of the spring 707 abut against the sliding block 706 and the opposing walls inside the support frame 704, respectively. When the tension of the mica belt fluctuates, the rotating wheel 703 drives the sliding block 706 to move and squeeze or release the spring 707. The elastic deformation of the spring 707 is used to dynamically buffer and compensate for the tension change, ensuring the smoothness of the conveying process. The tension adjustment assembly 7 includes a support frame 704 serving as the mounting base. The support frame 704 has a guide groove inside for accommodating a sliding block 706. The sliding block 706 is slidably connected to the guide groove of the support frame 704. A rotating rod 705 is rotatably connected to the sliding block 706. A rotating wheel 703 is fixedly connected to both ends of the rotating rod 705. This structure forms a floating rotating wheel mechanism that can reciprocate within the support frame 704. Simultaneously, a spring 707 is disposed inside the support frame 704, with both ends of the spring 707 abutting against the sliding block 706. The inner wall of the block 706 and the support frame 704 are opposite each other, and their function is to provide elastic restoring force for the movement of the sliding block 706. In addition, the first conveying rod 701 and the second conveying rod 702 are fixedly connected to the support frame 704 and are respectively located on both sides of the rotating wheel 703. The mica belt passes around the first conveying rod 701, the outer circumference of the rotating wheel 703 and the second conveying rod 702 in sequence, ensuring that when the tension of the mica belt changes, it can be compensated in time by the up and down floating of the rotating wheel 703 and the extension and retraction of the spring 707, thereby obtaining extremely high conveying stability. To further improve the uniformity of drying, multiple fans 604 are fixedly connected to the inner wall of the drying chamber 4. These fans are arrayed along the conveying path of the mica belt to fully agitate and evenly disperse the hot air entering the drying chamber 4, ensuring that the entire surface of the mica belt receives equal heat. To improve the efficiency of hot air circulation, multiple air inlets are evenly distributed along the length of the exhaust pipe 605 located at the top of the drying chamber 4. This arrangement allows for more comprehensive collection of rising humid and hot gas. A heat collection box 606 is connected to the exhaust pipe 605, inside which... The unit also includes a structure for filtering and separating water vapor. This structure can remove some moisture before the hot air returns to the hot air blower 601, thereby improving the efficiency of reheating. The hot air blower 601 is an electrically heated hot air blower that integrates the heating module and the fan module into one unit. It has a compact structure and is easy to control the temperature precisely. In the tension adjustment component 7, in order to ensure the stability and accuracy of the movement of the sliding block 706, a guide groove is opened inside the support frame 704 to accommodate the sliding of the sliding block 706. The shape of the sliding block 706 matches the inner cavity of the guide groove to form a stable sliding guide fit.

[0020] Working principle: During operation, the mica tape roll is installed on the first conveyor roller 2 rotating inside the support platform 1. The mica tape is unrolled from the first conveyor roller 2, passes through the tension adjustment component 7, then enters the drying box 4 and is conveyed forward by the conveyor belt 5, and is finally wound up by the second conveyor roller 3. When the mica strip passes through the drying chamber 4 for heating and drying, the hot air circulation assembly 6 starts to work. First, the hot air blower 601 delivers heated hot air to the air collector hood 603 through the first connecting pipe 602. The air collector hood 603 guides the hot air into the drying chamber 4 to heat and dry the mica strip. Multiple fans 604 installed on the inner wall of the drying chamber 4 blow the hot air evenly, so that the heat is evenly distributed inside the drying chamber 4, ensuring the uniformity of drying of the mica strip. During the drying process, the hot air with moisture rises due to the decrease in density. After being collected by the air outlet pipe 605 at the top of the drying chamber 4, it is delivered to the heat collector 606. The heat collector 606 collects heat and removes some moisture. Then, the gas containing residual heat is delivered back to the air inlet of the hot air blower 601 through the second connecting pipe 607. The hot air blower 601 reheats the gas and delivers it into the drying chamber 4. In this way, the hot air forms a closed loop circulation, which improves the energy utilization rate and effectively reduces energy consumption. During the mica belt conveying process, the tension adjustment component 7 adjusts the tension of the mica belt in real time. The mica belt sequentially passes around the outer periphery of the first conveying rod 701, the rotating wheel 703, and the second conveying rod 702 in the tension adjustment component 7. When the tension of the mica belt is too high, the rotating wheel 703 will be squeezed downwards. The rotating wheel 703 drives the rotating rod 705 and the sliding block 706 to slide in the guide groove inside the support frame 704. When the sliding block 706 slides, it will squeeze the spring 707 at its top. After the spring 707 is compressed, it generates elastic force. The elastic force reacts to the sliding block 706, thereby buffering excessive tension on the mica belt and achieving automatic tension adjustment. Conversely, when the tension decreases, the elastic force of the spring 707 pushes the sliding block 706 and the rotating wheel 703 back to their original positions, maintaining appropriate tension on the mica belt. Through the floating of the rotating wheel 703 and the buffering effect of the spring 707, the deformation or damage of the mica belt due to improper tension is effectively avoided, ensuring the dimensional and structural integrity of the finished product. At the same time, it ensures that the mica belt runs at a uniform speed and flat, further improving the uniformity of drying.

Claims

1. A hot air circulating mica belt dryer, comprising: The system comprises a support platform (1), a first conveyor roller (2) and a second conveyor roller (3) rotatably connected to the support platform (1), and a drying chamber (4) disposed between the first conveyor roller (2) and the second conveyor roller (3), wherein a conveyor belt (5) is provided inside the drying chamber (4). The system is characterized in that... It also includes a hot air circulation assembly (6) and a tension adjustment assembly (7); The hot air circulation assembly (6) includes a hot air blower (601), the air outlet of the hot air blower (601) is connected to an air collector hood (603) through a first connecting pipe (602), the air collector hood (603) is connected to the air inlet of the drying box (4), the top of the drying box (4) is provided with an air outlet pipe (605), the air outlet pipe (605) is connected to a heat collector box (606), and the heat collector box (606) is connected to the air inlet of the hot air blower (601) through a second connecting pipe (607). The tension adjustment assembly (7) includes a support frame (704), a sliding block (706) is slidably connected inside the support frame (704), a rotating rod (705) is rotatably connected to the sliding block (706), and rotating wheels (703) are fixedly connected to both ends of the rotating rod (705). A spring (707) is also provided inside the support frame (704), and both ends of the spring (707) abut against the sliding block (706) and the opposing inner walls of the support frame (704).

2. The hot air circulating mica belt dryer according to claim 1, characterized in that: Multiple fans (604) are fixedly connected to the inner wall of the drying oven (4).

3. The hot air circulating mica belt dryer according to claim 1, characterized in that: The tension adjustment assembly (7) further includes a first conveying rod (701) and a second conveying rod (702) fixedly connected to the support frame (704) and respectively disposed on both sides of the wheel (703).

4. A hot air circulating mica belt dryer according to claim 3, characterized in that: The mica belt passes sequentially around the outer periphery of the first conveyor rod (701), the wheel (703), and the second conveyor rod (702).

5. A hot air circulating mica belt dryer according to claim 1, characterized in that: The hot air blower (601) is an electrically heated hot air blower.

6. A hot air circulating mica belt dryer according to claim 1, characterized in that: The support frame (704) has a guide groove inside for accommodating the sliding block (706) to slide.

7. A hot air circulating mica belt dryer according to claim 1, characterized in that: The air outlet pipe (605) is provided with multiple air inlets evenly arranged along the top length of the drying box (4).

8. A hot air circulating mica belt dryer according to claim 1, characterized in that: The solar collector (606) is equipped with a structure for filtering and separating water vapor.

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