Heated roller

Abstract

The utility model discloses a kind of heating roller, comprising: roller body, multiple installation cavities are set in roller body along its circumferential direction;Multiple heating pipes are provided, and each heating pipe is respectively detachably arranged in each installation cavity;Slip electric ring is arranged at the end of the one end of the roller body, and slip electric ring is electrically connected with each heating pipe by conducting wire.The scheme sets multiple installation cavities in the roller body along circumferential direction, and heating pipe is detachably mounted in corresponding installation cavity, so that heating pipe is directly contacted with roller body, reduces intermediate link of heat transfer, avoids heat loss caused by additional medium, and multiple heating pipes are evenly distributed in roller body, so that heat is more evenly transferred to the surface of roller body, the surface temperature of roller body is more uniform, so as to improve heating efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of heating equipment, and in particular to a heating roller. Background Technology

[0002] A heating roller is a type of heating roller that converts electrical energy into heat energy. It is widely used in industries such as aluminum and electricity, packaging, plastics, and papermaking.

[0003] In some related technologies, such as the patent with publication number CN214154873U, a closed internally heated roller is disclosed, including a roller body, a left shaft head, a right shaft head, a heater holder, a heater assembly, and a control component. The roller body has a heating cavity containing heat-conducting oil. One end of the roller body has a first connecting hole communicating with the heating cavity. The roller surface of the roller body has an oil injection hole communicating with the heating cavity, and a sealing plug is installed in the oil injection hole. The left shaft head is fixed to the end of the roller body away from the first connecting hole, and the right shaft head is fixed to the end of the roller body at the first connecting hole. The right shaft head has a through second connecting hole communicating with the first connecting hole. The heater holder is located in the center of the heating cavity and is fixedly connected to the roller body. Several sets of heat exchange holes are provided on the side wall of the heater holder. The heater assembly passes through the first and second connecting holes and is located inside the heater holder, and the heater assembly is detachably connected to the roller body. The control component is electrically connected to the heater assembly.

[0004] The above solution has a technical problem: if the solution requires heat transfer oil to transfer heat in the heating cavity, the heat needs to be transferred to the heat transfer oil first, and then transferred to the roller surface by the heat transfer oil. Since the heat transfer path is long, some heat is easily lost during the transfer process, so the heating efficiency is relatively low. Utility Model Content

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides a heating roller.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A heating roller, the heating roller comprising:

[0008] The roller body has multiple mounting cavities arranged circumferentially within it.

[0009] The heating element is provided in multiple forms, and each heating element is detachably disposed in each of the mounting cavities.

[0010] A sliding ring is disposed at one end of the roller body, and the sliding ring is electrically connected to each of the heating tubes through a conductive wire.

[0011] As a preferred technical solution of this utility model, the roller body includes a first connecting body, a heating body and a second connecting body integrally formed; each of the mounting cavities is built into the heating body; the sliding electric ring is disposed in the first connecting body or the second connecting body.

[0012] As a preferred technical solution of this utility model, bearing rings are sleeved on the outer side of both the first connecting body and the outer side of the second connecting body.

[0013] As a preferred technical solution of this utility model, the roller body further includes an end cap, which is detachably disposed at one end of the heating element to block the opening of the mounting cavity away from the sliding ring.

[0014] As a preferred technical solution of this utility model, the heating element is provided with a fixing hole, and the end cap is provided with a locking hole for corresponding communication with the fixing hole.

[0015] The heating roller also includes a locking member, which is detachably inserted into both the locking hole and the fixing hole.

[0016] As a preferred technical solution of this utility model, the roller body is provided with a plurality of accommodating cavities along its circumference, and each of the accommodating cavities is provided with a plurality of constant temperature structures.

[0017] As a preferred technical solution of this utility model, a sealing component is provided at the opening of one end of each of the accommodating cavities.

[0018] As a preferred technical solution of this utility model, the sealing assembly includes a plugging member and a sealing ring; the plugging member is detachably inserted into the opening of the accommodating cavity, and the sealing ring is sleeved on the outer side wall of the plugging member and abuts against the roller body.

[0019] As a preferred technical solution of this utility model, the opening at one end of the mounting cavity is internally threaded, and the end of the heating tube is provided with a bolt, which is inserted into the opening of the mounting cavity and engages with the internal thread.

[0020] As a preferred technical solution of this utility model, the bolt is provided with a neutral wire end and a live wire end, and the neutral wire end and the live wire end are electrically connected to the sliding ring through a conductive wire.

[0021] By setting multiple mounting cavities along the circumference inside the roller body, the heating tubes can be detachably installed in the corresponding mounting cavities, so that the heating tubes can directly contact the roller body. This reduces the intermediate links in heat transfer and avoids heat loss caused by additional media (such as heat transfer oil). Moreover, the multiple heating tubes are evenly distributed inside the roller body, so that the heat is transferred to the roller body surface more evenly, making the roller body surface temperature more uniform and thus improving the heating efficiency.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] By arranging multiple mounting cavities circumferentially within the roller body and detachably installing the heating element within each cavity, heat can be directly transferred to the roller surface, avoiding the complex process in existing designs where heat is first transferred to the heat transfer oil and then to the roller surface. This design significantly shortens the heat transfer path, reduces heat loss during the transfer process, and thus significantly improves heating efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural diagram of the heating roller according to an embodiment of the present invention.

[0026] Figure 2 This is an exploded view of the roller body and heating tube of this utility model embodiment.

[0027] Figure 3 yes Figure 2 A structural sectional view.

[0028] Figure 4 This is a cross-sectional view of the roller body according to an embodiment of the present invention.

[0029] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0030] Figure 6 This is an exploded view of the roller body and end cap of an embodiment of this utility model.

[0031] Figure 7 This is a structural diagram of the heating element according to an embodiment of the present invention.

[0032] Numbers in the diagram

[0033] 1. Roller body; 11. Mounting cavity; 12. First connecting body; 13. Heating element; 131. Fixing hole; 132. Bolt; 1321. Neutral wire end; 1322. Live wire end; 14. Second connecting body; 15. Bearing ring; 16. Receiving cavity;

[0034] 2. Heating element;

[0035] 3. Slip rings;

[0036] 4. End cap; 41. Locking hole;

[0037] 5. Sealing assembly; 51. Plug; 52. Sealing ring. Detailed Implementation

[0038] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0039] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0040] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0041] When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0044] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0045] To address the technical problem of relatively low heating efficiency in existing technologies, this utility model provides a heating roller.

[0046] The following describes in detail the specific structure of a heating roller provided by an embodiment of this utility model, according to the appendix. Figure 1-7 As shown, the specific structure of the heating roller includes a roller body 1, a heating tube 2, and a sliding electric ring 3.

[0047] Multiple mounting cavities 11 are provided along the circumference of the roller body 1.

[0048] Specifically, each mounting cavity 11 is used to accommodate the heating tube 2. Each mounting cavity 11 is a long channel whose size matches the shape of the heating tube 2, ensuring that the heating tube 2 can be tightly installed in it. Multiple mounting cavities 11 are evenly distributed along the circumference of the roller body 1. This layout can ensure that the heat is evenly distributed inside the roller body 1, thereby improving the uniformity of the heating effect. As a result, since the mounting cavities 11 are evenly distributed along the circumference of the roller body 1, the heat will form a uniform distribution inside the roller body 1. Therefore, the heat generated by each heating tube 2 will be transferred to the surrounding part of the roller body 1, thereby ensuring that the temperature of the entire surface of the roller body 1 is uniform.

[0049] Furthermore, the heating element 2 is installed in the mounting cavity 11 in a detachable manner. Typically, the heating element 2 is fixed by threaded connection, snap-fit, or a dedicated mounting bracket. This detachable design facilitates the installation and maintenance of each heating element 2. For example, if a heating element 2 is damaged, it can be quickly replaced without replacing the entire roller body 1.

[0050] according to Figure 1 and Figure 2 As shown, there are multiple heating tubes 2, and each heating tube 2 is detachably installed in each mounting cavity 11.

[0051] Specifically, heating element 2 comprises a tube body, a resistance wire, and insulating material. The tube body is made of a metallic material, such as stainless steel or copper, possessing good thermal conductivity and mechanical strength. The resistance wire, the main heating element of heating element 2, is made of materials such as nickel-chromium alloy (NiCr), exhibiting high resistivity and good high-temperature resistance. The resistance wire is wrapped with insulating material to prevent direct contact between the resistance wire and the tube body, thus avoiding short circuits.

[0052] When the heating roller is working, the external power supply transmits electrical energy to each heating tube 2 through the sliding ring 3. The rotating part of the sliding ring 3 is connected to the roller body 1, and the fixed part is connected to the external power supply, ensuring that electrical energy can be stably transmitted to the heating tube 2. Each heating tube 2 is connected to the sliding ring 3 through a conductive wire, forming an independent electrical circuit. After the electrical energy is transmitted to the heating tube 2 through the conductive wire, the current flows through the resistance wire. According to Joule's law, the resistance wire will generate heat after being energized. That is, the resistance wire will convert electrical energy into heat energy during the heating process, generating a large amount of heat. The heat generated by the resistance wire is first transferred to the insulating material, and then transferred to the inside of the roller body 1 through the outer shell. The outer shell is usually made of metal material, which has good thermal conductivity and can quickly transfer heat to the inside of the roller body 1. The heat is transferred to the surface of the roller body 1 through thermal conduction inside the roller body 1, and finally transferred to the material in contact with the surface of the roller body 1, thereby heating the material.

[0053] It should be noted that a temperature sensor is required to ensure that the temperature of heating element 2 remains within the set range. This sensor monitors the temperature of heating element 2 in real time and feeds the temperature signal back to the temperature controller. The temperature controller automatically adjusts the power of heating element 2 based on the set temperature value to ensure the temperature stays within the set range. If the temperature is too high, the temperature controller will reduce the current, lowering the power of heating element 2; if the temperature is too low, the temperature controller will increase the current, increasing the power of heating element 2.

[0054] according to Figure 1 As shown, the sliding ring 3 is disposed at one end of the roller body 1, and the sliding ring 3 is electrically connected to each heating tube 2 through a conductive wire.

[0055] Specifically, the stator and rotor are configured such that the stator is connected to an external power source, installed at the end of the roller body 1, and also used to fix it to the mounting frame. The stator contains multiple brushes that contact the rotor and transmit electrical energy to the rotor. The rotor is connected to the roller body 1 and rotates with the roller body 1. It contains multiple conductive rings that contact the brushes of the stator and transmit electrical energy to each heating element 2. The conductive rings of the rotor are connected to each heating element 2 by conductive wires to ensure that electrical energy can be transmitted to each heating element 2. With this configuration, since the roller body 1 needs to rotate continuously during operation, while the power line is fixed, the sliding ring 3 can ensure the stable transmission of electrical energy when the roller body 1 rotates, thus playing the role of stably transmitting electrical energy from the external power source to the heating elements 2 inside the rotating roller body 1.

[0056] When an external power source is connected to the stator of the sliding ring 3 via a cable, the stator brushes are connected to the positive and negative terminals of the external power source to ensure that electrical energy can be transmitted to the rotating parts. When the roller 1 rotates, the rotor's conductive rings remain in contact with the stator brushes. Electrical energy is transmitted to the conductive rings through the brushes and then to each heating element 2 through the conductive wires. Each conductive ring corresponds to one heating element 2, thereby ensuring that each heating element 2 can obtain stable electrical energy.

[0057] according to Figure 2 and Figure 3 As shown, in some specific embodiments, the roller body 1 includes a first connecting body 12, a heating element 13, and a second connecting body 14 integrally formed; each mounting cavity 11 is built into the heating element 13; and the sliding electric ring 3 is disposed on the first connecting body 12 or the second connecting body 14.

[0058] Specifically, the roller body 1 adopts a one-piece molding design, integrating the first connecting body 12, the heating element 13, and the second connecting body 14 into a single unit. This design eliminates the potential for loose connections or breakage in traditional split structures, significantly improving the structural stability of the roller body 1. Furthermore, the one-piece molding of the roller body 1 provides higher resistance to deformation, enabling it to withstand greater mechanical and thermal stresses, ensuring optimal performance during long-term operation and in high-temperature environments. Specifically, the first connecting body 12 and the second connecting body 14 are located at opposite ends of the roller body 1 for connection to other equipment or components. This design allows the roller body 1 to be easily installed into the production line and work collaboratively with other equipment.

[0059] The first connector 12 and the second connector 14 are used for mechanical connection, that is, the first connector 12 is used to connect with the drive device (such as a motor). This connection method ensures that the roller 1 can rotate stably and transmits the rotational power to the entire roller 1. Moreover, the first connector 12 and the second connector also play a role in structural support, ensuring the stability and strength of the entire roller 1.

[0060] according to Figure 3 As shown, in a further embodiment, a bearing ring 15 is fitted on the outer side of both the first connector 12 and the second connector 14.

[0061] Specifically, the main function of the bearing ring 15 is to provide mechanical support for the roller 1. It is installed on the outside of the first connecting body 12 and the second connecting body 14 to ensure the roller 1 remains stable and balanced during rotation. The bearing ring 15 can withstand the weight of the roller 1 and the mechanical stress generated during operation, preventing the roller 1 from shifting or vibrating during rotation. By installing rolling bearings inside the bearing ring 15, the friction between the roller 1 and the supporting structure can be significantly reduced. It should be noted that the rolling elements (such as balls or rollers) of the rolling bearing roll between the inner and outer rings, thereby converting sliding friction into rolling friction, greatly reducing friction and wear. The rolling bearings inside the bearing ring 15 have high precision and good concentricity, ensuring that the roller 1 maintains a smooth and uniform rotation speed during rotation. Furthermore, the bearing ring 15 effectively reduces the vibration generated by the roller 1 during rotation, ensuring smooth rotation of the roller 1 and reducing equipment damage and product defects caused by vibration.

[0062] according to Figure 4 , Figure 5 and Figure 6 As shown, in a further embodiment, the roller body 1 also includes an end cap 4, which is detachably disposed at one end of the heating element 13 to block the opening of the mounting cavity 11 at the end away from the sliding ring 3.

[0063] Specifically, the end cap 4 is used to prevent the cable of the heating element 2 from being exposed. Since the end of the mounting cavity 11 away from the slip ring 3 has an opening, the heating element 2 is easily affected by the external environment during installation and use, such as dust, moisture, and mechanical damage. Therefore, by sealing the opening of the mounting cavity 11, the end cap 4 can effectively protect the heating element 2 inside the mounting cavity 11, preventing it from being exposed and damaged. In this way, the end cap 4 can effectively prevent dust, moisture, and other impurities from entering the mounting cavity 11 and the interior of the heating element 2. This sealing protection not only extends the service life of the heating element 2 but also improves the reliability and stability of the equipment, especially in humid or dusty working environments.

[0064] according to Figure 6 As shown, specifically, the heating element 13 has a fixing hole 131, and the end cover 4 has a locking hole 41 that is connected to the fixing hole 131; the heating roller also includes a locking member, which is detachably inserted into both the locking hole 41 and the fixing hole 131.

[0065] Specifically, the heating element 13 has fixing holes 131, which are typically located at one end of the heating element 13 and are aligned with the locking holes 41 on the end cap 4. The fixing holes 131 provide a connection point for installing locking components, thereby fixing the end cap 4 to the heating element 13. The size and shape of the fixing holes 131 need to match the locking components to ensure they can be tightly inserted into the fixing holes 131. The end cap 4 has through locking holes 41, the positions of which correspond to the fixing holes 131 on the heating element 13. The locking holes 41 are aligned with the fixing holes 131 so that the locking components can be simultaneously inserted into both the locking holes 41 and the fixing holes 131, thus fixing the end cap 4 to the heating element 13. The locking components are used to fix the end cap 4 to the heating element 13.

[0066] It should be noted that the size and shape of the fixing hole 131 must match the locking component to ensure that the locking component can be tightly inserted into the fixing hole 131. The number and position of the fixing holes 131 should be designed according to actual needs to ensure the connection strength between the end cap 4 and the heating element 13. Similarly, the locking hole 41 should also match the size and shape of the locking component to ensure that the locking component can be smoothly inserted and fixed. The design of the locking hole 41 should consider machining accuracy and ease of installation to ensure that the locking component can be accurately inserted and fixed.

[0067] During assembly, the end cap 4 is placed at one end of the heating element 13, aligning the locking hole 41 on the end cap 4 with the fixing hole 131 on the heating element 13. The locking element is then inserted into the locking hole 41 and the fixing hole 131. The locking element should be able to be inserted smoothly and fit tightly. By tightening the locking element, the end cap 4 is firmly fixed to the heating element 13. In this way, the tightening force of the locking element presses the end cap 4 tightly onto the heating element 13, ensuring that there is no gap between the two. This tight fit can prevent dust, moisture and other impurities from entering the mounting cavity 11 and the heating tube 2, improving the sealing performance of the equipment. Moreover, the connection between the end cap 4 and the heating element 13 is more secure through the fixing of the locking element, enhancing the structural stability of the entire roller body 1 and preventing the end cap 4 from loosening or falling off due to vibration or mechanical stress during operation.

[0068] It is understood that the locking component in this embodiment of the present invention may be a bolt 132, a screw, a pin or other similar fastener, and the fixing hole 131 is a threaded hole.

[0069] according to Figure 4 As shown, in some specific embodiments, a plurality of accommodating cavities 16 are provided in the roller body 1 along its circumference, and a plurality of constant temperature structures are provided in each accommodating cavity 16.

[0070] Specifically, the cavities are multiple independent spaces arranged circumferentially inside the roller body 1 for installing the temperature-regulating structure. These cavities 16 are typically evenly distributed within the heating element 13 portion of the roller body 1, ensuring that heat is evenly distributed across the surface of the roller body 1. The temperature-regulating structure is a key component for maintaining a constant internal temperature of the roller body 1. In this embodiment of the invention, the temperature-regulating structure can be of various types, such as a temperature controller, thermocouples, heating elements, and heat dissipation elements. These components work together to ensure that the temperature within the cavities 16 remains within a set range.

[0071] The constant temperature structure includes a heating element, a heat dissipation element, a temperature sensor, and a constant temperature controller. The heating element is a resistance wire or heating tube, which is used to convert electrical energy into heat energy to increase the temperature inside the accommodating cavity 16. The heat dissipation element is a heat sink or cooling tube, which is used to dissipate excess heat when the temperature is too high and maintain a stable temperature. The temperature sensor is a thermocouple or thermistor, which is used to monitor the temperature inside the accommodating cavity 16 in real time and feed the temperature signal back to the constant temperature controller. The constant temperature controller automatically adjusts the power of the heating element according to the feedback signal from the temperature sensor to ensure that the temperature is kept within the set range.

[0072] For example, during operation, the thermostat automatically adjusts the power of the heating element based on the feedback signal from the temperature sensor. If the temperature is lower than the set value, the thermostat increases the power of the heating element to raise the temperature inside the accommodating cavity 16. Conversely, if the temperature is higher than the set value, the thermostat reduces the power of the heating element or even turns it off. At the same time, it activates the heat dissipation element to dissipate excess heat. The heating element generates heat after being powered on, raising the temperature inside the accommodating cavity 16. The heat dissipation element activates when the temperature is too high, dissipating excess heat through heat sinks or cooling pipes, thereby maintaining a stable temperature.

[0073] In a further embodiment, a sealing component 5 is provided at one end of the opening of each accommodating cavity 16.

[0074] Specifically, by providing sealing components 5 at the openings at one end of the accommodating cavity 16, heat is prevented from leaking from the accommodating cavity 16 to the external environment. Thus, the sealing components 5 ensure that the heat within the accommodating cavity 16 is effectively retained internally, improving thermal energy utilization efficiency and reducing energy loss. Furthermore, the sealing components 5 ensure that the temperature within the accommodating cavity 16 remains constant, thereby improving the temperature uniformity of the entire roller body 1 surface. In addition, the sealing components 5 effectively prevent dust, moisture, and other impurities from entering the accommodating cavity 16, preventing these impurities from potentially damaging or affecting the performance of the temperature-controlled structure (such as heating elements, temperature sensors, etc.), thereby protecting the temperature-controlled structure and extending its service life.

[0075] according to Figure 4 and Figure 5As shown, specifically, the sealing assembly 5 includes a plugging member 51 and a sealing ring 52; the plugging member 51 is detachably inserted into the opening of the receiving cavity 16, and the sealing ring 52 is sleeved on the outer wall of the plugging member 51 and abuts against the roller body 1.

[0076] Specifically, the sealing element 51 is detachably inserted into the opening of the receiving cavity 16, physically blocking the opening to prevent heat leakage and impurities from entering. The shape and size of the sealing element 51 should match the opening of the receiving cavity 16 to ensure a tight fit. Furthermore, the sealing element 51 is detachable for easy installation and replacement. The sealing ring 52 is fitted onto the outer wall of the sealing element 51 and abuts against the roller body 1. Its main function is to provide additional sealing to ensure there are no gaps between the sealing element 51 and the receiving cavity 16, further preventing heat leakage and impurities from entering.

[0077] Specifically, the sealing member 51 is inserted into the opening of the receiving cavity 16, ensuring a tight fit. The detachable design of the sealing member 51 allows it to be fixed at the opening of the receiving cavity 16 by threads, slots, or other mechanical connections. The sealing ring 52 is fitted onto the outer wall of the sealing member 51, ensuring a tight fit between the sealing ring 52 and the sealing member 51, and abutting against the inner wall of the receiving cavity 16. The elastic material of the sealing ring 52 can automatically adjust its shape during insertion to ensure a sealing effect. In this embodiment of the invention, the sealing member 51 is firmly fixed at the opening of the receiving cavity 16 by tightening the threads, ensuring that the sealing member 51 and the sealing ring 52 will not loosen or shift during operation.

[0078] It is understood that the sealing ring 52 of this embodiment is annular, with its inner diameter matching the outer diameter of the plugging member 51 and its outer diameter matching the inner diameter of the receiving cavity 16, to ensure that it can be tightly fitted onto the plugging member 51 and in close contact with the inner wall of the receiving cavity 16. The sealing ring 52 is made of an elastic material, such as rubber, polytetrafluoroethylene or other high-temperature resistant elastic materials. Such materials can deform within a certain range to adapt to the slight irregularities between the plugging member 51 and the receiving cavity 16, thereby achieving a good sealing effect.

[0079] It is also understood that the sealing element 51 in this embodiment of the invention is made of high-temperature and corrosion-resistant materials, such as metals (e.g., aluminum alloys, stainless steel) or high-temperature plastics. Such materials can withstand the high-temperature environment within the accommodating cavity 16 while possessing sufficient mechanical strength.

[0080] according to Figure 2 and Figure 3 As shown, in some specific embodiments, the opening at one end of the mounting cavity 11 is internally threaded, and the end of the heating tube 2 is provided with a bolt 132, which is inserted into the opening of the mounting cavity 11 and engages with the internal thread.

[0081] Specifically, the opening at one end of the mounting cavity 11 is provided with internal threads. These internal threads are used to engage with the bolts 132 at the end of the heating tube 2, thereby fixing and sealing the heating tube 2. The specification of the internal threads should match the bolts 132 at the end of the heating tube 2 to ensure that the bolts 132 can be smoothly inserted and tightly engaged. The precision and depth of the threads should meet the design requirements to ensure the stability and sealing of the connection. The heating tube 2 is provided with bolts 132 at its end. These bolts 132 are used to insert into the opening of the mounting cavity 11 and engage with the internal threads to fix and seal the heating tube 2. The specification of the bolts 132 should match the internal threads of the mounting cavity 11 to ensure that the bolts 132 can be smoothly inserted and tightly engaged.

[0082] During assembly, align the bolt 132 of the heating element 2 with the internal thread at the opening of the mounting cavity 11, ensuring that the bolt 132 can be inserted smoothly. Insert the bolt 132 into the opening of the mounting cavity 11 and begin tightening the bolt 132. During the tightening process, the bolt 132 gradually engages with the internal thread, and the heating element 2 is gradually fixed in the mounting cavity 11. Use a wrench or other tools to tighten the bolt 132, ensuring that the bolt 132 is tightly engaged with the internal thread. After tightening the bolt 132, the heating element 2 can be securely fixed. In this way, the engagement of the bolt 132 with the internal thread provides mechanical fixation, ensuring that the heating element 2 is stably installed in the mounting cavity 11 and will not loosen due to vibration or mechanical stress. Moreover, the tight engagement of the bolt 132 with the internal thread also provides a sealing effect, preventing heat and impurities from entering or leaving. This setting can effectively prevent heat leakage and impurities from entering the mounting cavity 11, thereby protecting the heating element 2.

[0083] according to Figure 7 As shown, in some specific embodiments, the bolt 132 is provided with a neutral wire end 1321 and a live wire end 1322, which are electrically connected to the slip ring 3 through conductive wires.

[0084] Specifically, the bolt 132 is provided with a neutral wire terminal 1321 and a live wire terminal 1322. These two terminals are used to connect the electrical circuit of the heating tube 2. The neutral wire terminal 1321 is used to connect the neutral wire, and the live wire terminal 1322 is used to connect the live wire, ensuring that the heating tube 2 can obtain a stable power supply. The conductive wire is used to electrically connect the neutral wire terminal 1321 and the live wire terminal 1322 to the slip ring 3, ensuring that the electrical energy can be stably transmitted to the heating tube 2.

[0085] When an external power source is connected to the stator of the sliding ring 3 via a cable, the brushes of the stator contact the annular track of the rotating part, ensuring that electrical energy can be stably transmitted to the interior of the rotating roller 1. The electrical energy is transmitted to the conductive wire through the annular track of the sliding ring 3, and then the conductive wire transmits the electrical energy to the neutral wire 1321 and the live wire 1322 of the heating tube 2. The neutral wire 1321 and the live wire 1322 are respectively connected to the two electrodes of the heating tube 2, forming a complete electrical circuit.

[0086] It is understandable that the conductive wires are connected to the neutral wire terminal 1321 and the live wire terminal 1322 by means of welding, crimping or threading.

[0087] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A heat roll, characterized by, The heating roller includes: The roller body has multiple mounting cavities arranged circumferentially within it. The heating element is provided in multiple forms, and each heating element is detachably disposed in each of the mounting cavities. A sliding ring is disposed at one end of the roller body, and the sliding ring is electrically connected to each of the heating tubes through a conductive wire.

2. The heat roll according to claim 1, characterized in that The roller body includes a first connecting body, a heating element, and a second connecting body that are integrally formed; each of the mounting cavities is built into the heating element; and the sliding electric ring is disposed in the first connecting body or the second connecting body.

3. The heat roll according to claim 2, characterized in that Bearing rings are fitted on the outer sides of both the first connector and the second connector.

4. The heat roll according to claim 2, wherein The roller body also includes an end cap, which is detachably disposed at one end of the heating element to block the opening of the mounting cavity away from the sliding ring.

5. The heat roll according to claim 4, characterized in that The heating element has a fixing hole, and the end cap has a locking hole that communicates with the fixing hole. The heating roller also includes a locking member, which is detachably inserted into both the locking hole and the fixing hole.

6. The heating roller according to claim 1, characterized in that, The roller body has multiple accommodating cavities arranged along its circumference, and each accommodating cavity is provided with multiple temperature-controlled structures.

7. The heat roll according to claim 6, characterized in that Each of the accommodating cavities has a sealing component at one end of its opening.

8. The heat roll according to claim 7, characterized in that The sealing assembly includes a plug and a sealing ring; the plug is detachably inserted into the opening of the accommodating cavity, and the sealing ring is sleeved on the outer wall of the plug and abuts against the roller body.

9. The heat roll according to claim 1, wherein The opening at one end of the mounting cavity is internally threaded, and the end of the heating tube is provided with a bolt, which is inserted into the opening of the mounting cavity and engages with the internal thread.

10. The heat roll according to claim 9, characterized in that The bolt is provided with a neutral wire end and a live wire end, which are electrically connected to the sliding ring via conductive wires.

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