Multi-air-duct cord drying oven

Abstract

The utility model discloses a multi-air-duct cord drying oven which comprises a drying oven body, and one side of the drying oven body is communicated with a drying heating assembly. According to the drying device, the drying heating assembly is arranged for heating, drying and blowing, the backflow circulating pipe plays a role in waste heat backflow and recycling, the drying cost is reduced, hot air is guided up and down in the gaps of the flow guide air duct plates and then flows back and is guided out through the backflow circulating pipe, the hot air drying length is increased, and the drying efficiency is high; the thread rope rolling disc and the thread rope conduction frame can conduct flow guide and conduction on the thread rope, drying operation is convenient, the flow guide thread of the thread rope is matched with the flow guide air channel plate, the thread rope drying length is large, the drying quality is improved, the waste heat recycling effect of the device is good, constant temperature can be kept while energy is saved, the thread rope drying efficiency is improved, and the drying thread prolonging effect is good. The cord drying length is increased, and the drying efficiency and the drying quality are high.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a multi-duct rope drying oven. Background Technology

[0002] In the textile and cable manufacturing industries, drying of yarn and rope products is a crucial step in ensuring product quality and performance. A multi-duct yarn drying oven, as a specialized drying device, utilizes multiple independent duct systems to achieve precise distribution and control of hot air, thereby improving the efficiency and uniformity of yarn drying. It is widely used in the industry. Hot air is evenly delivered into the oven, ensuring full contact between the yarn and the hot air. The heat transfer removes moisture from the yarn, achieving the goal of drying it. This method effectively and quickly dries yarn and ropes, facilitating subsequent processing.

[0003] However, in practical applications, existing drying ovens typically employ hot air drying. During the actual drying process, the hot air loses significant heat as it flows within the oven, making it difficult to form an effective circulation loop. This results in a large amount of heat not being reused and failing to fully utilize the remaining heat to preheat newly arrived ropes. This not only wastes energy but also reduces drying efficiency and increases energy costs. Furthermore, the multi-duct shielding capability is insufficient, and the extension capability of hot air drying is relatively poor. Common ovens also suffer from insufficient length and drying capacity, thus affecting the drying quality of the ropes. Therefore, we propose a multi-duct rope drying oven to address these issues. Utility Model Content

[0004] In response to the problems raised, this utility model provides a multi-duct rope drying oven to solve the aforementioned issues.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-duct cord drying oven includes a drying oven body, and a drying heating component is connected to one side of the drying oven body;

[0007] The top of the drying oven body is connected to a return circulation pipe that is connected to the end of the drying heating component. The top and bottom walls of the drying oven body are provided with corresponding staggered air guide plates. The interior of the drying oven body is provided with a rope conduction frame. The side of the air guide plate away from the drying oven body is provided with a rope roller.

[0008] The drying oven body has a closed door with a through hole corresponding to the rope roller on the side away from the drying and heating components.

[0009] Preferably, the drying oven body, the drying heating component, and the reflux circulation pipe are connected in a circular manner. The drying oven body is a rectangular box. The drying heating component and the through-hole closed door are installed on the two sides of the drying oven body respectively. The front of the drying oven body is provided with an installation adjustment door.

[0010] Preferably, the drying and heating assembly includes a heating guide pipe, an air diffuser, and an electric heater. The air diffuser is connected between the heating guide pipe and the main body of the drying oven. The electric heater is fixedly installed inside the heating guide pipe. The top end of the heating guide pipe on the side away from the air diffuser is connected to a return circulation pipe. A temperature detector is correspondingly provided at the bottom of the heating guide pipe. A heat-resistant blower is provided inside the heating guide pipe. The temperature detector is electrically connected to the electric heater.

[0011] Preferably, the bottom of the heating guide tube is provided with a support bracket, the heating guide tube and the center of the air diffuser are aligned on the same axis, the end of the heating guide tube away from the air diffuser is provided with a processing switch cover, the bottom of the heating guide tube is provided with a pick-up and put-down switch cover, and the heat-resistant blower is installed on the top of the pick-up and put-down switch cover.

[0012] Preferably, the two ends of the reflux circulation pipe are respectively installed on the top of the drying oven body and the drying heating component. The drying oven body, the drying heating component and the reflux circulation pipe are circulated and connected. A heat-resistant guide fan is correspondingly provided inside the reflux circulation pipe.

[0013] Preferably, the rope transmission frame includes a mounting frame, a connecting crossbar, and a turning transmission disc. The mounting frame is fixedly installed on the inner side of the connecting crossbar at equal intervals. The turning transmission disc is installed on the inner side of the connecting crossbar at equal intervals. The turning transmission disc corresponds to the rope roller.

[0014] Preferably, the cord roller includes a magnetic U-shaped seat and a bearing roller. The magnetic U-shaped seat is magnetically engaged with the side of the air duct plate away from the main body of the drying oven, and the bearing roller is fixedly installed on the side of the magnetic U-shaped seat away from the air duct plate.

[0015] Preferably, the through-hole closing door includes a sealing door and a rope perforation groove. The sealing door is closed and disposed on the side of the drying oven body away from the drying heating component. The rope perforation groove is evenly disposed on the sealing door and is connected to the inner side of the drying oven body. An anti-wear and heat-resistant ring is sleeved on the rope perforation groove.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. This multi-duct rope drying oven has a drying heating component installed on the side of the main body of the oven. The drying heating component heats and blows air for drying. The top of the main body of the oven is connected to a return circulation pipe that is connected to the drying heating component, which plays a role in the return and reuse of waste heat. This facilitates the reuse of waste heat for drying, greatly reduces heat loss, lowers drying energy costs, and makes the waste heat recycling effect of the device good. While saving energy, it can maintain a constant temperature and improve the drying efficiency of ropes.

[0018] 2. This multi-duct rope drying oven features intersecting guide air duct plates on the upper and lower sides of the oven's main body. Hot air is guided up and down within the gaps between these guide air duct plates and then returned through the recirculation pipe. This significantly improves the hot air drying length, enhancing drying quality and efficiency. The rope rollers can conduct the rope, which is then guided through a rope conduction frame before being re-guided out through a closed door. The rope's flow path matches the guide air duct plates, extending the rope drying length and improving drying quality. This design effectively extends the drying length of the rope, resulting in high drying efficiency and quality. Attached Figure Description

[0019] Figure 1 This utility model provides a frontal perspective three-dimensional schematic diagram of a multi-duct rope drying oven;

[0020] Figure 2 This utility model provides a top-view perspective view of a multi-duct rope drying oven.

[0021] Figure 3 This is a three-dimensional front view of the installation and adjustment door of this utility model after elimination;

[0022] Figure 4 This utility model provides a front view sectional perspective of a multi-duct rope drying oven.

[0023] Figure 5 This is a frontal perspective three-dimensional schematic diagram of the connection structure between the connecting crossbar and the turning transmission disc of this utility model.

[0024] In the diagram: 1. Drying oven body; 11. Installation and adjustment door; 2. Drying heating assembly; 21. Heating guide pipe; 22. Expansion duct; 23. Electric heater; 24. Temperature detector; 25. Heat-resistant blower; 26. Support bracket; 27. Processing switch cover; 28. Retrieval switch cover; 3. Return circulation pipe; 31. Guide heat-resistant blower; 4. Guide air duct plate; 5. Rope conduction frame; 51. Mounting frame; 52. Connecting crossbar; 53. Turning transmission disc; 6. Rope roller; 61. Magnetic U-shaped seat; 62. Bearing roller; 7. Through-hole closing door; 71. Sealing door; 72. Rope perforation groove; 73. Wear-resistant heat-resistant ring. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Please see Figures 1-5 A multi-duct cord drying oven includes a drying oven body 1, and a drying heating component 2 is connected to one side of the drying oven body 1.

[0028] The top of the drying oven body 1 is connected to a return circulation pipe 3 that is connected to the end of the drying heating component 2. The top and bottom walls of the drying oven body 1 are provided with corresponding guide air duct plates 4. The interior of the drying oven body 1 is provided with a wire rope transmission frame 5. The side of the guide air duct plate 4 away from the drying oven body 1 is provided with a wire rope roller 6.

[0029] Among them, the drying oven body 1 is provided with a through-hole closed door 7 corresponding to the rope roller 6 on the side away from the drying heating component 2;

[0030] The beneficial effects of this solution are as follows: By incorporating a drying and heating component 2 for heating and drying air blowing, and a return circulation pipe 3 for waste heat return and reuse, heat energy loss is greatly reduced and drying energy costs are lowered. The drying oven body 1 is equipped with a through-hole closed door 7, through which a rope can pass. Hot air is guided up and down through the gaps between multiple guide air duct plates 4 and then returned and discharged through the return circulation pipe 3, which greatly improves the hot air drying process and enhances drying quality and efficiency.

[0031] The guide air duct plate 4 has a corresponding magnetically attached wire roller 6, which can conduct the wire. After being deflected and conducted by the wire conduction frame 5, the wire is re-guided out through the closed door 7. The wire guide thread matches the guide air duct plate 4, which extends the wire drying length, improves the drying quality, is convenient to use, and makes the waste heat recycling effect of the device good. While saving energy, it can maintain a constant temperature, improve the wire drying efficiency, and the drying thread extension effect is good, which increases the wire drying length and the drying efficiency and drying quality are high.

[0032] Furthermore, the drying oven body 1, the drying heating component 2, and the return circulation pipe 3 are connected in a circular manner. The drying oven body 1 is a rectangular box. The drying heating component 2 and the through-hole closed door 7 are installed on the two sides of the drying oven body 1 respectively. The front of the drying oven body 1 is provided with an installation adjustment door 11.

[0033] Specifically, the front of the drying oven body 1 is provided with an installation and adjustment door 11, which facilitates the operation of the internal ropes of the drying oven body 1, and at the same time, facilitates the cleaning and maintenance of the internal rope transmission frame 5 and rope roller 6, thus improving the ease of use.

[0034] Furthermore, the drying heating assembly 2 includes a heating guide pipe 21, an air diffuser 22, and an electric heater 23. The air diffuser 22 is connected between the heating guide pipe 21 and the main body 1 of the drying oven. The electric heater 23 is fixedly installed inside the heating guide pipe 21. The top end of the heating guide pipe 21 away from the air diffuser 22 is connected to the return circulation pipe 3. A temperature detector 24 is provided at the bottom of the heating guide pipe 21. A heat-resistant blower 25 is provided inside the heating guide pipe 21. The temperature detector 24 is electrically connected to the electric heater 23.

[0035] Specifically, the drying heating assembly 2 includes a heating guide pipe 21, an air diffuser 22, and an electric heater 23. The heating guide pipe 21 is connected to the side of the drying oven body 1. The air diffuser 22 serves to diffuse air for drying, is easy to adapt, and improves the drying effect. The electric heater 23 is located inside the heating guide pipe 21 and serves to heat and dry, is easy to operate, and the temperature detector 24 can monitor the temperature in real time, making it easy to control the switch of the electric heater 23, thereby maintaining a constant temperature inside the drying heating assembly 2. While maintaining the drying temperature, it reduces heat loss and has relatively low energy consumption. The heat-resistant blower 25 serves to blow air. The heated air can be pressurized and blown into the inside of the heating guide pipe 21 by the heat-resistant blower 25, resulting in good drying effect and easy adaptation.

[0036] Furthermore, a support bracket 26 is provided at the bottom of the heating guide pipe 21, the center of the heating guide pipe 21 and the air duct 22 are aligned with the same axis, a processing switch cover plate 27 is provided at the end of the heating guide pipe 21 away from the air duct 22, a pick-up and put-down switch cover 28 is provided at the bottom of the heating guide pipe 21, and a heat-resistant blower 25 is installed on the top of the pick-up and put-down switch cover 28.

[0037] Specifically, a support bracket 26 is provided at the bottom of the heating guide tube 21 to provide support and load-bearing function, making it convenient to operate. The processing switch cover 27 is located on the side of the heating guide tube 21 to facilitate maintenance and cleaning, making it convenient to operate. The bottom of the heating guide tube 21 is provided with a pick-and-place switch cover 28 to facilitate the on / off control of the heat-resistant hair dryer 25, making it convenient to operate. The heat-resistant hair dryer 25 has good heat resistance and excellent drying and airflow guiding ability.

[0038] Furthermore, the two ends of the reflux circulation pipe 3 are respectively installed on the top of the drying oven body 1 and the drying heating component 2. The drying oven body 1, the drying heating component 2 and the reflux circulation pipe 3 are connected in a loop. The reflux circulation pipe 3 is equipped with a guide heat-resistant fan 31.

[0039] Specifically, the main body 1 of the drying oven, the drying heating component 2 and the return circulation pipe 3 are connected in a circular manner, which has a good circulation and excellent adaptability. The return circulation pipe 3 is equipped with a heat-resistant guide fan 31, which plays a role in reflux pressurization, has a good reverse circulation effect, stable circulation, and good waste heat recycling effect. Moreover, the heat-resistant guide fan 31 is a heat-resistant fan with good heat resistance and long service life.

[0040] Furthermore, the rope transmission frame 5 includes a mounting frame 51, a connecting crossbar 52, and a turning transmission disc 53. The mounting frame 51 is fixedly installed on the inner side of the connecting crossbar 52 at equal intervals. The turning transmission disc 53 is installed on the inner side of the connecting crossbar 52 at equal intervals. The turning transmission disc 53 corresponds to the rope roller 6.

[0041] Specifically, the mounting frame 51 and the connecting crossbar 52 can be combined in a frame-like manner. The turning transmission disc 53 is rotatably installed on the inner side of the connecting crossbar 52 at equal distances, and the rope can be driven by the turning transmission disc 53, turning and leading out. The transmission support is stable, and the drying and processing effect of the rope is good.

[0042] Furthermore, the cord roller 6 includes a magnetic U-shaped seat 61 and a bearing roller 62. The magnetic U-shaped seat 61 is magnetically engaged with the side of the air duct plate 4 away from the drying oven body 1, and the bearing roller 62 is fixedly installed on the side of the magnetic U-shaped seat 61 away from the air duct plate 4.

[0043] Specifically, the magnetic U-shaped seat 61 magnetically engages with the airflow duct plate 4, facilitating its forward and backward movement on the airflow duct plate 4, making it convenient for the operation and use of the rope. It is easy to operate and can also support the transmission and fixation of the bearing roller 62. The bearing roller 62 can support and fix the rope, ensuring stable rope flow, convenient disassembly and assembly, and easy use.

[0044] Furthermore, the through-hole closing door 7 includes a sealing door 71 and a rope perforation groove 72. The sealing door 71 is closed and disposed on the side of the drying oven body 1 away from the drying heating component 2. The rope perforation groove 72 is evenly disposed on the sealing door 71 and is connected to the inner side of the drying oven body 1. A wear-resistant and heat-resistant ring 73 is sleeved on the rope perforation groove 72.

[0045] Specifically, the wire perforation grooves 72 are evenly spaced on the sealing door 71, which facilitates the wire to extend from the outside into the air guide plate 4 through the wire perforation grooves 72. This makes operation convenient. The sealing door 71 plays a sealing role, which greatly reduces heat loss. The wear-resistant and heat-resistant ring 73 plays a wear-resistant role, which makes it less likely to wear the wire during the conduction process. This makes it convenient to use.

[0046] How to use and how to work this device:

[0047] By providing a drying heating component 2 on the side of the drying oven body 1, the drying heating component 2 provides heating and drying air blowing. The top of the drying oven body 1 is connected to a return circulation pipe 3 that is connected to the drying heating component 2, which plays the role of waste heat return and reuse. The drying oven body 1, the drying heating component 2 and the return circulation pipe 3 are interconnected and circulate together, which facilitates the reuse of waste heat drying, greatly reduces heat energy loss and reduces drying energy consumption costs.

[0048] The drying oven body 1 is equipped with a through-hole closed door 7. The rope can be inserted into the drying oven body 1 through the through-hole closed door 7 and the rope through-hole groove 72. The upper and lower sides of the drying oven body 1 are equipped with intersecting airflow guide plates 4. After the hot air enters the drying oven body 1 from the drying heating component 2, it is guided up and down by the gaps between the multiple airflow guide plates 4 and then returned and discharged by the return circulation pipe 3. This greatly improves the hot air drying thread, so that the drying oven body 1 can be kept small while the drying thread is long, thus improving the drying quality and efficiency.

[0049] The guide air duct plate 4 is magnetically attached to the rope roller 6. The rope roller 6 can conduct the rope that enters through the through hole closed door 7. After being deflected and conducted by the rope conduction frame 5, the rope is guided out again through the through hole closed door 7 by the rope roller 6 that was transmitted to it, thus completing the rope guiding and drying operation. The rope guiding thread matches the guide air duct plate 4, which greatly extends the drying length of the rope, improves the drying quality, and is convenient to use.

[0050] The front of the drying oven body 1 is provided with an installation and adjustment door 11, which facilitates the operation of the internal ropes of the drying oven body 1, and at the same time, facilitates the cleaning and maintenance of the internal rope transmission frame 5 and rope roller 6, thus improving the ease of use.

[0051] The drying heating assembly 2 includes a heating guide pipe 21, an air diffuser 22, and an electric heater 23. The heating guide pipe 21 is connected to the side of the drying oven body 1. The air diffuser 22 plays a role in air diffusion and drying, which is convenient to adapt and improves the drying effect. The electric heater 23 is set inside the heating guide pipe 21 and plays a role in heating and drying. It is easy to operate. The temperature detector 24 can monitor the temperature in real time and control the switch of the electric heater 23, thereby maintaining a constant temperature inside the drying heating assembly 2. While maintaining the drying temperature, it reduces heat loss and has relatively low energy consumption. The heat-resistant blower 25 plays a role in blowing air. The heated air can be pressurized and blown into the inside of the heating guide pipe 21 by the heat-resistant blower 25, which has a good blowing and drying effect and is convenient to adapt.

[0052] The bottom of the heating guide tube 21 is provided with a support bracket 26, which serves to support and bear loads, making it convenient to operate. The processing switch cover 27 is set on the side of the heating guide tube 21, which serves to maintain and clean it, making it convenient to operate. The bottom of the heating guide tube 21 is provided with a pick-up and put-out switch cover 28, which facilitates the on / off control of the heat-resistant hair dryer 25, making it convenient to operate. The heat-resistant hair dryer 25 has good heat resistance and excellent drying and air guiding capacity.

[0053] The interior of the return circulation pipe 3 is equipped with a heat-resistant guide fan 31, which plays a role in return pressurization, has a good guiding circulation effect, stable circulation, and good waste heat recycling effect. In addition, the heat-resistant guide fan 31 is a heat-resistant fan with good heat resistance and long service life.

[0054] The rope conveying frame 5 includes a mounting frame 51, a connecting crossbar 52, and a turning transmission disc 53. The mounting frame 51 and the connecting crossbar 52 can be combined in a frame-like manner. The turning transmission disc 53 is rotatably mounted on the inner side of the connecting crossbar 52 at equal distances. The rope can be driven by the turning transmission disc 53, turning and leading out. The transmission support is stable, and the drying and processing effect of the rope is good.

[0055] The described cord roller 6 includes a magnetic U-shaped seat 61 and a bearing roller 62. The magnetic U-shaped seat 61 magnetically engages with the airflow duct plate 4, facilitating its forward and backward displacement on the airflow duct plate 4, which is convenient for the operation and use of the cord. It is easy to operate and can also support the transmission and fixation of the bearing roller 62. The bearing roller 62 can support and fix the cord, ensuring stable cord flow, convenient disassembly and assembly, and easy use.

[0056] The through-hole closing door 7 includes a sealing door 71 and a rope perforation groove 72. The rope perforation groove 72 is equally spaced on the sealing door 71, which facilitates the rope to extend from the outside into the air guide duct plate 4 through the rope perforation groove 72. The operation is convenient. The sealing door 71 plays a sealing role, which greatly reduces heat loss. The wear-resistant and heat-resistant ring 73 plays a wear-resistant role, which makes it less likely to wear the rope during the conduction process. It is convenient to use.

[0057] The device effectively utilizes waste heat, maintains a constant temperature while saving energy, improves the drying efficiency of the rope, and extends the drying thread length, resulting in higher drying efficiency and quality.

[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A multi-duct cord drying oven, comprising a drying oven body (1), characterized in that: A drying heating component (2) is connected to one side of the main body (1) of the drying oven; The top of the drying oven body (1) is connected to a return circulation pipe (3) that is connected to the end of the drying heating component (2). The top and bottom walls of the drying oven body (1) are provided with corresponding staggered air guide plates (4). The interior of the drying oven body (1) is provided with a wire conduction frame (5). The side of the air guide plate (4) away from the drying oven body (1) is provided with a wire roller (6). The drying oven body (1) is provided with a through-hole closed door (7) on the side away from the drying heating component (2) and corresponding to the rope roller (6).

2. The multi-duct rope drying oven according to claim 1, characterized in that: The drying oven body (1), drying heating component (2) and reflux circulation pipe (3) are connected in a loop. The drying oven body (1) is a rectangular box. The drying heating component (2) and through hole closing door (7) are installed on the two sides of the drying oven body (1). The front of the drying oven body (1) is provided with an installation adjustment door (11).

3. The multi-duct rope drying oven according to claim 1, characterized in that: The drying heating assembly (2) includes a heating guide pipe (21), an air diffuser (22), and an electric heater (23). The air diffuser (22) is connected between the heating guide pipe (21) and the main body (1) of the drying oven. The electric heater (23) is fixedly installed inside the heating guide pipe (21). The top end of the heating guide pipe (21) away from the air diffuser (22) is connected to the return circulation pipe (3). A temperature detector (24) is provided at the bottom of the heating guide pipe (21). A heat-resistant blower (25) is provided inside the heating guide pipe (21). The temperature detector (24) is electrically connected to the electric heater (23).

4. The multi-duct rope drying oven according to claim 3, characterized in that: The bottom of the heating guide pipe (21) is provided with a support bracket (26). The center of the heating guide pipe (21) and the air duct (22) are aligned with the same axis. The end of the heating guide pipe (21) away from the air duct (22) is provided with a processing switch cover plate (27). The bottom of the heating guide pipe (21) is provided with a pick-up and put-down switch cover (28). The heat-resistant blower (25) is installed on the top of the pick-up and put-down switch cover (28).

5. The multi-duct rope drying oven according to claim 1, characterized in that: The two ends of the reflux circulation pipe (3) are respectively installed on the top of the drying oven body (1) and the drying heating component (2). The drying oven body (1), the drying heating component (2) and the reflux circulation pipe (3) are connected in a loop. The reflux circulation pipe (3) is equipped with a flow guiding heat-resistant fan (31) inside.

6. The multi-duct rope drying oven according to claim 1, characterized in that: The cord transmission frame (5) includes a mounting frame (51), a connecting crossbar (52), and a turning transmission disc (53). The mounting frame (51) is fixedly installed on the connecting crossbar (52) and is installed at equal intervals on the inner side of the mounting frame (51). The turning transmission disc (53) is installed at equal intervals on the inner side of the connecting crossbar (52) and corresponds to the cord roller (6).

7. The multi-duct rope drying oven according to claim 1, characterized in that: The cord roller (6) includes a magnetic U-shaped seat (61) and a bearing roller (62). The magnetic U-shaped seat (61) is magnetically engaged with the air duct plate (4) on the side away from the drying oven body (1). The bearing roller (62) is fixedly installed on the side of the magnetic U-shaped seat (61) away from the air duct plate (4).

8. The multi-duct rope drying oven according to claim 1, characterized in that: The through-hole closing door (7) includes a sealing door (71) and a rope perforation groove (72). The sealing door (71) is closed and disposed on the side of the drying oven body (1) away from the drying heating component (2). The rope perforation groove (72) is evenly disposed on the sealing door (71). The rope perforation groove (72) is connected to the inner side of the drying oven body (1). A wear-resistant and heat-resistant ring (73) is sleeved on the rope perforation groove (72).

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