Rotary joint structure for heat exchange roller

Abstract

The utility model relates to the technical field of rotary joints, and discloses a rotary joint structure for a heat exchange roller, which comprises a rotary component and a water supply component, one end of the rotating assembly is inserted into the water supply assembly, and the rotating assembly can rotate relative to the water supply assembly; the other end of the rotating assembly is used for being connected with a heat exchange roller, and the rotating assembly can introduce heat exchange liquid into the heat exchange roller. The mechanical seal is mounted between the rotating assembly and the water supply assembly so as to seal a gap between the rotating assembly and the water supply assembly; the first sealing ring is mounted between the rotating assembly and the mechanical seal so as to seal a gap between the rotating assembly and the mechanical seal; and the second sealing ring is mounted between the water supply assembly and the mechanical seal so as to seal a gap between the water supply assembly and the mechanical seal. According to the utility model, a double-sealing structure is formed, the sealing performance of the rotary joint is greatly enhanced, and heat exchange liquid is effectively prevented from leaking in the rotating process, so that the stability and the safety of a heat exchange system are ensured.

Description

Technical Field

[0001] This utility model relates to the field of rotary joint technology, and in particular to a rotary joint structure for heat exchange rollers. Background Technology

[0002] Hydrophilic foil, as an important industrial material, is widely used in refrigeration, air conditioning, and cold storage. The traditional production process of hydrophilic foil mainly includes several core steps: pretreatment cleaning, oven drying, roller coating, and curing. In the pretreatment cleaning stage, the surface of the hydrophilic foil is thoroughly cleaned to remove impurities such as oil and dust. Subsequently, it enters the oven drying process, which aims to remove moisture from the surface of the hydrophilic foil to ensure uniform absorption of the coating during the roller coating process. However, traditional electric heating drying methods are not only energy-intensive but also have limited drying efficiency.

[0003] To overcome this challenge, heat exchange roller drying technology has been widely applied in the drying process of hydrophilic foil in recent years. This technology mainly recovers heat lost in the interlayer between the base coating area and the top coating area of ​​the curing oven, as well as heat generated when the hydrophilic foil moves in and out of the base coating area and the top coating area, through a heat exchange device. The recovered waste heat is cleverly utilized in the drying process of the drying oven, which not only significantly reduces energy consumption but also improves drying efficiency.

[0004] In heat exchange roller drying technology, the heat exchange roller plays a crucial role. It transfers fluid (such as circulating water) from a fixed piping system to rotating heat exchange tubes to achieve efficient heat exchange. Because the hydrophilic foil production process requires a high level of environmental cleanliness, even minor fluid leaks can adversely affect product quality. Traditionally, the connection between the heat exchange roller and the external piping (i.e., the rotary joint) typically involves installing one or more sealing rings between the rotating shaft and the fixed piping to prevent fluid leakage during rotation. However, the material selection for these sealing rings often fails to simultaneously meet multiple performance requirements, including high temperature resistance, wear resistance, and good elasticity. Over long-term use, they are prone to aging, deformation, and even breakage, significantly reducing their sealing effectiveness. Utility Model Content

[0005] This invention provides a rotary joint structure for heat exchange rollers to solve the problem of poor sealing performance of traditional rotary joints.

[0006] This application provides a rotary joint structure for a heat exchange roller, comprising:

[0007] The rotating component and the water supply component are provided. The rotating component has a hollow structure. One end of the rotating component is inserted into the water supply component and the rotating component can rotate relative to the water supply component. The other end of the rotating component is used to connect to the heat exchange roller and the rotating component can pass the heat exchange fluid into the heat exchange roller.

[0008] A mechanical seal is installed between the rotating assembly and the water supply assembly to seal the gap between the rotating assembly and the water supply assembly;

[0009] A first sealing ring is installed between the rotating assembly and the mechanical seal to seal the gap between the rotating assembly and the mechanical seal;

[0010] A second sealing ring is installed between the water supply assembly and the mechanical seal to seal the gap between them.

[0011] Based on the above technical means, this utility model forms a double sealing structure by setting a mechanical seal between the rotating component and the water supply component, and installing a first sealing ring and a second sealing ring between the rotating component and the mechanical seal, and between the water supply component and the mechanical seal, respectively. This greatly enhances the sealing performance of the rotary joint, effectively prevents leakage of heat exchange fluid during rotation, and thus ensures the stability and safety of the heat exchange system.

[0012] Furthermore, the rotating assembly includes a rotating shaft and a rotating bushing, with at least a portion of the rotating bushing sleeve fitted onto the rotating shaft; the rotating shaft has a hollow structure, and the rotating bushing sleeve is inserted into the water supply assembly to allow heat exchange fluid to flow into the rotating shaft; the mechanical seal is installed between the rotating bushing sleeve and the water supply assembly.

[0013] According to the above-mentioned technical means, in this utility model, one end of the rotating bushing is sleeved on the rotating shaft, and the other end forms a structure similar to a socket, so that it can be inserted into the water supply component. At the same time, the mechanical seal is installed between the rotating bushing and the water supply component, which not only facilitates installation and disassembly, but also ensures a tight fit between the two, thereby improving the sealing performance and effectively preventing the leakage of heat exchange fluid during the transmission process.

[0014] Furthermore, it also includes a third sealing ring, which is installed between the rotating shaft and the rotating shaft sleeve.

[0015] Based on the above technical means, the third sealing ring, as an additional sealing layer, is installed between the rotating shaft and the rotating bushing, effectively filling the tiny gap between them, thereby greatly enhancing the sealing performance inside the rotating assembly.

[0016] Meanwhile, due to the presence of the third sealing ring, the friction and wear between the rotating shaft and the rotating bushing are significantly reduced, extending the service life of the rotating assembly.

[0017] Furthermore, it also includes an outer sleeve and a first bearing, the first bearing being installed inside the outer sleeve, and the rotating bushing being rotatably connected to the first bearing so that the rotating bushing can rotate within the outer sleeve.

[0018] Based on the above technical means, in this utility model, the outer sleeve is a fixed component, providing a stable support reference for the rotating bushing. The first bearing can withstand the axial and radial loads of the rotating bushing during rotation, ensuring that the rotating bushing can rotate accurately and stably on the support reference.

[0019] Furthermore, it also includes a limiting component, which is installed between the outer sleeve and the rotating bushing, and the limiting component abuts against the first bearing to prevent the first bearing from coming off.

[0020] According to the above-mentioned technical means, the limiting component abuts against the first bearing, ensuring the correct positioning of the first bearing during rotation. This effectively prevents the first bearing from coming off due to vibration, impact, or wear during rotation, thereby avoiding equipment failure or safety accidents caused by the failure of the first bearing.

[0021] Furthermore, the limiting component includes a first retaining ring and a second retaining ring. The first retaining ring is installed inside the outer sleeve and abuts against the outer ring of the first bearing; the second retaining ring is installed on the rotating bushing and abuts against the inner ring of the first bearing to limit the first bearing.

[0022] Based on the above-mentioned technical means, the first and second retaining rings axially limit the first bearing from both sides of the outer sleeve and the rotating bushing, and can withstand a certain lateral force and vibration, forming a double protection, which greatly reduces the risk of the first bearing coming off during rotation and ensures the stability and safety of the rotating assembly.

[0023] Furthermore, the water delivery assembly includes a support base assembly and a sealing port, wherein a water delivery channel is formed within the support base assembly; the sealing port is installed on the support base assembly and is connected to the water delivery channel; the support base assembly is inserted into the rotating bushing through the sealing port; and the mechanical seal is installed between the rotating bushing and the sealing port.

[0024] Based on the aforementioned technical means, a water delivery channel is formed within the support assembly, which connects to the sealing port. This integrated design makes the water delivery assembly compact and highly integrated. The sealing port is connected to the rotating sleeve via a plug-in connection and is equipped with a dedicated mechanical seal, ensuring the sealing performance between the rotating sleeve and the water delivery assembly and effectively preventing fluid leakage.

[0025] Furthermore, it also includes a second bearing, which is supported and installed between the support base assembly and the rotating bushing so that the rotating bushing can rotate within the support base assembly; the support base assembly is fixedly connected to the outer sleeve.

[0026] Based on the aforementioned technical means, the introduction of the second bearing provides smoother support for the rotation of the rotating bushing within the support assembly.

[0027] The first and second bearings are located at different positions on the rotating sleeve, working together to support its rotational movement. This dual-support structure allows the rotating sleeve to withstand greater radial and axial loads, significantly reducing vibration and sway during rotation, thereby improving rotational stability.

[0028] Furthermore, it also includes a clamp, which is connected to the mechanical seal and is used to tightly install the mechanical seal between the rotating bushing and the sealing socket.

[0029] Based on the aforementioned technical means, the introduction of the clamp ensures a tight installation of the mechanical seal between the rotating bushing and the sealing socket, effectively preventing fluid leakage and improving the overall sealing performance of the structure. Furthermore, the clamp not only secures the mechanical seal but also enhances the connection stability between the rotating bushing and the sealing socket, making the entire rotating assembly more stable during rotation and reducing equipment failures caused by vibration or shaking.

[0030] Furthermore, it also includes a flange for connecting the rotating assembly to the heat exchange roller.

[0031] Based on the above-mentioned technical means, the flange in this utility model serves as a connecting component, which can ensure a firm connection between the rotating assembly and the heat exchange roller.

[0032] The beneficial effects achieved by this utility model are:

[0033] This invention forms a double sealing structure by setting a mechanical seal between the rotating component and the water supply component, and installing a first sealing ring and a second sealing ring between the rotating component and the mechanical seal, and between the water supply component and the mechanical seal, respectively. This greatly enhances the sealing performance of the rotary joint and effectively prevents leakage of the heat exchange fluid during rotation, thereby ensuring the stability and safety of the heat exchange system. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0035] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0036] Figure 3 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0037] Figure label:

[0038] 1. Rotating assembly; 1-1. Rotating shaft; 1-2. Rotating bushing;

[0039] 2. Water supply assembly; 2-1. Support base assembly; 2-1-1. Rear seat; 2-1-2. Rear cover; 2-2. Sealing port; 2-3. Water supply channel;

[0040] 3. Mechanical seal; 4. First sealing ring; 5. Second sealing ring; 6. Third sealing ring; 7. Outer sleeve; 8. First bearing;

[0041] 9. Limiting assembly; 9-1. First retaining ring; 9-2. Second retaining ring;

[0042] 10. Second bearing; 11. Clamp; 12. Flange; 13. Fourth sealing ring; 14. Fifth sealing ring; 15. Sixth sealing ring.

[0043] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0046] In the embodiments of this application, 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0047] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0048] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0049] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0050] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0051] Example 1

[0052] like Figure 1 As shown, this embodiment provides a rotary joint structure for a heat exchange roller, including:

[0053] The rotating component 1 and the water supply component 2 are provided. The rotating component 1 has a hollow structure. One end of the rotating component 1 is inserted into the water supply component 2 and the rotating component 1 can rotate relative to the water supply component 2. The other end of the rotating component 1 is used to connect to the heat exchange roller and the rotating component 1 can pass the heat exchange liquid into the heat exchange roller.

[0054] Mechanical seal 3 is installed between rotating assembly 1 and water supply assembly 2 to seal the gap between rotating assembly 1 and water supply assembly 2;

[0055] The first sealing ring 4 is installed between the rotating assembly 1 and the mechanical seal 3 to seal the gap between the rotating assembly 1 and the mechanical seal 3;

[0056] The second sealing ring 5 is installed between the water supply assembly 2 and the mechanical seal 3 to seal the gap between the water supply assembly 2 and the mechanical seal 3.

[0057] like Figure 1 As shown, in practical applications, the use process of the rotary joint structure for heat exchange rollers is as follows:

[0058] First, precisely connect one end of the rotating assembly 1 to the water supply assembly 2, ensuring that the rotating assembly 1 can rotate freely relative to the water supply assembly 2. Simultaneously, check and ensure that the mechanical seal 3, the first sealing ring 4, and the second sealing ring 5 are correctly installed to form an effective multi-seal structure. Then, firmly connect the other end of the rotating assembly 1 to the heat exchange roller, ensuring that the heat exchange fluid can smoothly flow into the heat exchange roller.

[0059] After the rotary joint is installed, start the external power system to make the rotary assembly 1 start rotating. At this time, circulating water or other fluids (i.e., heat exchange fluid) begin to be transferred through the channels inside the rotary joint.

[0060] After preheating is completed and no leaks are confirmed, the rotating component 1 continues to rotate under the drive of external power. The circulating water is stably and continuously transferred to the heat exchange roller through the water supply component 2 and the rotating component 1 in sequence, so as to achieve effective heat exchange.

[0061] During this process, the multiple sealing structures (including the first sealing ring 4, the second sealing ring 5, and the mechanical seal) work together closely to effectively prevent fluid leakage and ensure smooth fluid transmission during rotation.

[0062] In this embodiment, a mechanical seal 3 is provided between the rotating assembly 1 and the water supply assembly 2. At the same time, a first sealing ring 4 and a second sealing ring 5 are installed between the rotating assembly 1 and the mechanical seal 3, and between the water supply assembly 2 and the mechanical seal 3, respectively, forming a double sealing structure. This greatly enhances the sealing performance of the rotary joint and effectively prevents the leakage of heat exchange fluid during the rotation process, thereby ensuring the stability and safety of the heat exchange system.

[0063] In this embodiment, the first sealing ring 4 and the second sealing ring 5 can be O-rings made of fluororubber material. Fluororubber O-rings can maintain a stable sealing effect under high temperature, high pressure and corrosive environment, and can also enhance wear resistance and vibration resistance, thereby extending the service life of the rotary joint.

[0064] Furthermore, the rotating assembly 1 includes a rotating shaft 1-1 and a rotating bushing 1-2, with at least a portion of the rotating bushing 1-2 fitted onto the rotating shaft 1-1; the rotating shaft 1-1 has a hollow structure, and the rotating bushing 1-2 is inserted into the water supply assembly 2 to allow heat exchange fluid to be introduced into the rotating shaft 1-1; the mechanical seal 3 is installed between the rotating bushing 1-2 and the water supply assembly 2.

[0065] In this embodiment, one end of the rotating bushing 1-2 is fitted onto the rotating shaft 1-1, and the other end forms a structure similar to a socket, so that it can be inserted into the water supply assembly 2. At the same time, the mechanical seal 3 is installed between the rotating bushing 1-2 and the water supply assembly 2, which not only facilitates installation and disassembly, but also ensures a tight fit between the two, thereby improving the sealing performance and effectively preventing leakage of heat exchange fluid during transmission.

[0066] In this embodiment, the rotating bushing 1-2 is fixedly connected to the rotating shaft 1-1, so that the rotating bushing 1-2 can reliably drive the rotating shaft 1-1 to rotate.

[0067] like Figure 1 As shown, the rotating bushing 1-2 and the rotating shaft 1-1 are fixedly connected by stainless steel hexagon socket bolts. The stainless steel hexagon socket bolts can withstand large tensile and shear forces, thereby ensuring a stable connection between the rotating bushing 1-2 and the rotating shaft 1-1, which is not easy to loosen or fall off.

[0068] Furthermore, it also includes a third sealing ring 6, which is installed between the rotating shaft 1-1 and the rotating bushing 1-2.

[0069] The third sealing ring 6, as an additional sealing layer, is installed between the rotating shaft 1-1 and the rotating bushing 1-2, effectively filling the tiny gap between them, thereby greatly enhancing the sealing performance inside the rotating assembly 1.

[0070] Meanwhile, due to the presence of the third sealing ring 6, the friction and wear between the rotating shaft 1-1 and the rotating bushing 1-2 are significantly reduced, extending the service life of the rotating assembly 1.

[0071] In this embodiment, the third sealing ring 6 can be an O-ring made of fluororubber material. Fluororubber O-rings can maintain a stable sealing effect under high temperature, high pressure and corrosive environment, and can also enhance wear resistance and vibration resistance, thereby extending the service life of the rotary joint.

[0072] Furthermore, it also includes an outer sleeve 7 and a first bearing 8, with the first bearing 8 installed inside the outer sleeve 7, and the rotating bushing 1-2 rotatably connected to the first bearing 8 so that the rotating bushing 1-2 can rotate inside the outer sleeve 7.

[0073] In this embodiment, the outer sleeve 7 is a fixing component, providing a stable support reference for the rotating bushing 1-2. The first bearing 8 can withstand the axial and radial loads of the rotating bushing 1-2 during rotation, ensuring that the rotating bushing 1-2 can rotate accurately and stably on the support reference.

[0074] Furthermore, it also includes a limiting component 9, which is installed between the outer sleeve 7 and the rotating bushing 1-2, and the limiting component 9 abuts against the first bearing 8 to prevent the first bearing 8 from coming off.

[0075] The limiting component 9 abuts against the first bearing 8, ensuring the correct positioning of the first bearing 8 during rotation. This effectively prevents the first bearing 8 from coming off due to vibration, impact, or wear during rotation, thereby avoiding equipment failure or safety accidents caused by the failure of the first bearing 8.

[0076] Furthermore, the limiting component 9 includes a first retaining ring 9-1 and a second retaining ring 9-2. The first retaining ring 9-1 is installed inside the outer sleeve 7 and abuts against the outer ring of the first bearing 8; the second retaining ring 9-2 is installed on the rotating bushing 1-2 and abuts against the inner ring of the first bearing 8 to limit the first bearing 8.

[0077] The first retaining ring 9-1 and the second retaining ring 9-2 axially limit the first bearing 8 from both sides of the outer sleeve 7 and the rotating bushing 1-2, and can withstand certain lateral forces and vibrations, forming a double protection, which greatly reduces the risk of the first bearing 8 coming off during rotation and ensures the stability and safety of the rotating assembly 1.

[0078] Furthermore, the water supply assembly 2 includes a support base assembly 2-1 and a sealing port 2-2. A water supply channel 2-3 is formed inside the support base assembly 2-1. The sealing port 2-2 is installed on the support base assembly 2-1 and is connected to the water supply channel 2-3. The support base assembly 2-1 is inserted into the rotating bushing 1-2 through the sealing port 2-2. The mechanical seal 3 is installed between the rotating bushing 1-2 and the sealing port 2-2.

[0079] The support assembly 2-1 has a water delivery channel 2-3 that communicates with the sealing port 2-2. This integrated design makes the water delivery assembly 2 compact and highly integrated. The sealing port 2-2 is connected to the rotating sleeve 1-2 by a plug-in connection and is equipped with a special mechanical seal 3, which ensures the sealing performance between the rotating sleeve 1-2 and the water delivery assembly 2 and effectively prevents fluid leakage.

[0080] In this embodiment, the support assembly 2-1 and the sealing socket 2-2 are tightly secured with stainless steel hexagon socket bolts, which helps reduce the gap between them and thus improves the sealing performance. At the same time, the design of the stainless steel hexagon socket bolts makes the installation and disassembly process relatively simple and convenient. A dedicated hexagon wrench can easily tighten or loosen the bolts without requiring excessive tools or complicated procedures.

[0081] Furthermore, it also includes a second bearing 10, which is supported and installed between the support base assembly 2-1 and the rotating bushing 1-2 so that the rotating bushing 1-2 can rotate within the support base assembly 2-1; the support base assembly 2-1 is fixedly connected to the outer sleeve 7.

[0082] The introduction of the second bearing 10 provides smoother support for the rotation of the rotating bushing 1-2 within the support assembly 2-1.

[0083] The first bearing and the second bearing 10 are located at different positions on the rotating sleeve 1-2, and together they support the rotational movement of the rotating sleeve 1-2. This dual support structure enables the rotating sleeve 1-2 to withstand greater radial and axial loads, significantly reducing vibration and sway during rotation, thereby improving rotational stability.

[0084] In this embodiment, the support assembly 2-1 and the outer sleeve 7 are tightly fixed together by stainless steel hex bolts, making the installation and disassembly process relatively simple and convenient. A dedicated hex wrench can easily tighten or loosen the bolts without requiring excessive tools or complicated procedures.

[0085] Furthermore, it also includes a clamp 11, which is connected to the mechanical seal 3. The clamp 11 is used to tightly install the mechanical seal 3 between the rotating bushing 1-2 and the sealing socket 2-2.

[0086] The introduction of clamp 11 ensures a tight fit of the mechanical seal 3 between the rotating bushing 1-2 and the sealing socket 2-2, effectively preventing fluid leakage and improving the overall sealing performance of the structure. Furthermore, clamp 11 not only fixes the mechanical seal 3 but also enhances the connection stability between the rotating bushing 1-2 and the sealing socket 2-2, making the entire rotating assembly 1 more stable during rotation and reducing equipment failures caused by vibration or shaking.

[0087] It is readily apparent that the first sealing ring 4 can be installed between the rotating assembly 1 and the mechanical seal 3 to seal the gap between them; alternatively, it can be installed between the clamp 11 and the rotating bushing 1-2, similarly sealing the installation gap of the mechanical seal 3. In this embodiment, the two installation positions of the first sealing ring 4 allow for greater design flexibility, adapting to different sealing requirements and operating conditions. Whether installed between the rotating assembly 1 and the mechanical seal 3, or between the clamp 11 and the rotating bushing 1-2, it effectively seals the installation gap and prevents fluid leakage.

[0088] Furthermore, it also includes a flange 12, which is used to connect the rotating assembly 1 to the heat exchange roller.

[0089] In this embodiment, flange 12 serves as a connector, ensuring a secure connection between the rotating assembly 1 and the heat exchange roller.

[0090] It is readily apparent that flange 12 connections are typically equipped with gaskets or sealing rings to ensure a tight seal at the connection. Furthermore, those skilled in the art can weld flange 12 to other external devices as needed.

[0091] Example 2

[0092] This embodiment is similar to Embodiment 1, and the same parts are described in Embodiment 1. The following description only focuses on the improved parts.

[0093] like Figure 2 As shown, in order to further improve the sealing performance of the rotary joint, a fourth sealing ring 13 is added between the clamp 11 and the support assembly 2-1 in this embodiment, forming a multi-layer sealing structure, which effectively prevents the heat exchange fluid from leaking from the connection and further improves the sealing performance of the rotary joint.

[0094] Example 3

[0095] This embodiment is similar to Embodiment 1, and the same parts are described in Embodiment 1. The following description only focuses on the improved parts.

[0096] In this optimized embodiment, such as Figure 3 As shown, the support assembly 2-1 includes a rear seat 2-1-1 and a rear cover 2-1-2. The rear seat 2-1-1 and the rear cover 2-1-2 are tightly joined together to form a water delivery channel 2-3.

[0097] To enhance the sealing performance of the water delivery channel 2-3, a fifth sealing ring 14 is provided at the connection between the rear seat 2-1-1 and the rear cover 2-1-2 to seal the connection gap.

[0098] Furthermore, the rear seat 2-1-1 and the sealing socket 2-2 are tightly secured with high-strength stainless steel hex bolts, which not only enhances the structural stability but also facilitates subsequent maintenance and disassembly. Simultaneously, a sixth sealing ring 15 is installed at the connection point to seal the gap and effectively prevent heat exchange fluid leakage from the connection.

[0099] The structure of the rear seat 2-1-1 is appropriately extended along the axial direction of the rotating component 1, so that the rear seat 2-1-1 can be effectively fixedly connected with the outer sleeve 7, thereby enhancing the structural strength of the entire component.

[0100] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A rotary joint structure for a heat exchange roller, characterized in that, include: The rotating component (1) and the water delivery component (2) are provided, wherein the rotating component (1) is a hollow structure. One end of the rotating component (1) is inserted into the water supply component (2), and the rotating component (1) can rotate relative to the water supply component (2); the other end of the rotating component (1) is used to connect to the heat exchange roller, and the rotating component (1) can pass the heat exchange liquid into the heat exchange roller; Mechanical seal (3), the mechanical seal (3) is installed between the rotating assembly (1) and the water supply assembly (2) to seal the gap between the rotating assembly (1) and the water supply assembly (2); A first sealing ring (4) is installed between the rotating assembly (1) and the mechanical seal (3) to seal the gap between the rotating assembly (1) and the mechanical seal (3); The second sealing ring (5) is installed between the water supply assembly (2) and the mechanical seal (3) to seal the gap between the water supply assembly (2) and the mechanical seal (3).

2. The rotary joint structure for a heat exchange roller according to claim 1, wherein The rotating assembly (1) includes a rotating shaft (1-1) and a rotating bushing (1-2), at least part of which is fitted onto the rotating shaft (1-1); the rotating shaft (1-1) is a hollow structure, and the rotating bushing (1-2) is inserted into the water supply assembly (2) to allow heat exchange fluid to be introduced into the rotating shaft (1-1); the mechanical seal (3) is installed between the rotating bushing (1-2) and the water supply assembly (2).

3. The rotary joint structure for a heat exchange roller according to claim 2, characterized in that, It also includes a third sealing ring (6), which is installed between the rotating shaft (1-1) and the rotating bushing (1-2).

4. The rotary joint structure for a heat exchange roller according to claim 2, characterized in that, It also includes an outer sleeve (7) and a first bearing (8), the first bearing (8) being installed inside the outer sleeve (7), and the rotating bushing (1-2) being rotatably connected to the first bearing (8) so that the rotating bushing (1-2) can rotate inside the outer sleeve (7).

5. The rotary joint structure for a heat exchange roller according to claim 4, characterized in that, It also includes a limiting component (9), which is installed between the outer sleeve (7) and the rotating bushing (1-2), and the limiting component (9) abuts against the first bearing (8) to prevent the first bearing (8) from coming off.

6. The rotary joint structure for a heat exchange roller according to claim 5, characterized in that, The limiting component (9) includes a first retaining ring (9-1) and a second retaining ring (9-2). The first retaining ring (9-1) is installed inside the outer sleeve (7) and abuts against the outer ring of the first bearing (8). The second retaining ring (9-2) is installed on the rotating bushing (1-2) and abuts against the inner ring of the first bearing (8) to limit the first bearing (8).

7. The rotary joint structure for a heat exchange roller according to claim 4, characterized in that, The water delivery assembly (2) includes a support base assembly (2-1) and a sealing socket (2-2). A water delivery channel (2-3) is formed inside the support base assembly (2-1). The sealing socket (2-2) is installed on the support base assembly (2-1) and is connected to the water delivery channel (2-3). The support base assembly (2-1) is inserted into the rotating bushing (1-2) through the sealing socket (2-2). The mechanical seal (3) is installed between the rotating bushing (1-2) and the sealing socket (2-2).

8. The rotary joint structure for a heat exchange roller according to claim 7, characterized in that, It also includes a second bearing (10), which is supported and installed between the support assembly (2-1) and the rotating bushing (1-2) so that the rotating bushing (1-2) can rotate within the support assembly (2-1); the support assembly (2-1) is fixedly connected to the outer sleeve (7).

9. The rotary joint structure for a heat exchange roller according to claim 7, characterized in that, It also includes a clamp (11), which is connected to the mechanical seal (3) and is used to tightly install the mechanical seal (3) between the rotating bushing (1-2) and the sealing socket (2-2).

10. The rotary joint structure for a heat exchange roller according to claim 1, characterized in that, It also includes a flange (12) for connecting the rotating assembly (1) to the heat exchange roller.

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