Heating rod mounting combined flange structure

Abstract

The utility model belongs to heating rod installation technical field discloses heating rod installation combined flange structure. This heating rod installation combined flane structure includes fixed flange, splicing flange and fastening assembly, and fixed flange is fixedly connected with groove body, and heating rod is provided with the positioning step shoulder that sets up along its circumferential with fixed flange and intercommunication hole and extends into groove body, and is equipped with on heating rod, splicing flange includes first flange and second flange, and the splicing flange that first flange and second flange are buckled form integrally, and the inside of splicing flange is equipped with the positioning step groove that cooperates with positioning step shoulder, fastening assembly is used for realizing the overall fixation of splicing flange and the relative positioning of splicing flane and fixed flange, so that positioning step groove and positioning step shoulder are attached and abutted, and splicing flane exerts axial pressure on heating rod, realizes the detachable fixing of heating rod and groove body, improves the convenience of disassembly, and reduces maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of heating rod installation technology, and in particular to a combined flange structure for heating rod installation. Background Technology

[0002] In industrial production and liquid heating-related fields, heating rods are commonly used heating elements. They need to pass through the connecting holes on the tank and extend into the tank. The heating rods are fixed to the tank by a flange structure to ensure stable operation of the heating rods.

[0003] Currently, the flange structure and heating rod are usually welded directly together and then assembled into a whole at the connecting hole of the tank. Since the flange and heating rod cannot be separated, once the flange or heating rod is damaged, it cannot be replaced or repaired separately. It must be scrapped and remade as a whole, which not only increases maintenance costs and downtime, but also wastes the heating rod body components.

[0004] Therefore, there is an urgent need for a combined flange structure for heating rod installation to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a combined flange structure for heating rod installation, which improves the structure based on the existing structure, enhances the ease of disassembly, and reduces maintenance costs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A heating rod mounting assembly flange structure is used to detachably and securely connect the heating rod to the tank body after it passes through a pre-set connecting hole on the tank body. This heating rod mounting assembly flange structure includes:

[0008] A fixed flange is fixedly connected to the tank body. The heating rod passes through the fixed flange and the connecting hole and extends into the tank body. The heating rod is provided with a positioning step shoulder arranged along its circumference.

[0009] The splicing flange includes a first flange and a second flange, which are fastened together to form an integral splicing flange. The inner side of the splicing flange is provided with a positioning step groove that mates with the positioning step shoulder.

[0010] The fastening assembly is configured to achieve overall fixation of the splicing flange and relative positioning of the splicing flange and the fixed flange, so that the positioning step groove and the positioning step shoulder fit and abut against each other, and the splicing flange applies an axial clamping force to the heating rod, thereby achieving a detachable fixed connection between the heating rod and the tank.

[0011] As an optional solution for a combined flange structure for mounting a heating rod, the first flange is a first L-shaped piece, with the ends of the two arms of the first L-shaped piece being a first mating end and a second mating end, respectively. The right-angle corner of the first L-shaped piece is the first mounting end, which has a first mounting hole, a second mating end, and a third mounting hole. Along the axial direction of the heating rod, the thickness of both the first mating end and the second mating end is half the thickness of the first mounting end.

[0012] The second flange is a second L-shaped component. The ends of the two arms of the second L-shaped component are the third mating end and the fourth mating end, respectively. The right-angle corner of the second L-shaped component is the second mounting end. The third mating end is provided with a fourth mounting hole, the fourth mating end is provided with a fifth mounting hole, and the second mounting end is provided with a sixth mounting hole. Along the axial direction of the heating rod, the thickness of the third mating end and the fourth mating end is half the thickness of the second mounting end.

[0013] When the first flange and the second flange are engaged, the first mating end and the third mating end are complementary in shape and fit together, the first mounting hole and the fourth mounting hole are coaxially connected, the second mating end and the fourth mating end are complementary in shape and fit together, the second mounting hole and the fifth mounting hole are coaxially connected, the first mounting end and the second mounting end are coplanar, and the first L-shaped piece and the second L-shaped piece form a circular channel to achieve clamping and positioning of the heating rod.

[0014] As an optional solution for the combined flange structure for heating rod installation, after the first flange and the second flange are engaged, the first mating end and the fourth mating end are coplanar, and the second mating end and the third mating end are coplanar, so as to realize the complementary and staggered shapes of the first L-shaped part and the second L-shaped part.

[0015] As an optional solution for the heating rod mounting assembly flange structure, the heating rod mounting assembly flange structure also includes a sealing gasket, which is sandwiched between the fixed flange and the splicing flange. The two sides of the sealing gasket are respectively fitted to the fixed flange and the splicing flange to seal the assembly gap between the fixed flange and the splicing flange.

[0016] As an optional solution for the heating rod mounting assembly flange structure, the fixed flange has four threaded holes corresponding to the spliced ​​flange. The fastening assembly includes four studs and eight nuts. The four studs are respectively inserted through: the first mounting hole and the fourth mounting hole and adapted to the corresponding threaded hole, the second mounting hole and the fifth mounting hole and adapted to the corresponding threaded hole, the third mounting hole and adapted to the corresponding threaded hole, and the sixth mounting hole and adapted to the corresponding threaded hole. Each stud is fastened at both ends by two nuts.

[0017] As an optional solution for a heating rod mounting combined flange structure, the heating rod mounting combined flange structure further includes a first flat washer and a first spring washer. The first flat washer and the first spring washer are arranged sequentially along the direction from the splicing flange to the nut on its corresponding side, and are sandwiched between the splicing flange and the nut on the corresponding side. The first flat washer is in contact with the splicing flange, and the first spring washer is in contact with the nut.

[0018] As an optional solution for the heating rod mounting combined flange structure, the heating rod mounting combined flange structure further includes a second flat washer and a second spring washer. The second flat washer and the second spring washer are arranged sequentially along the direction from the fixed flange to the nut on its corresponding side, and are sandwiched between the fixed flange and the nut on the corresponding side. The second flat washer is in contact with the fixed flange, and the second spring washer is in contact with the nut.

[0019] As an optional solution for the combined flange structure for heating rod installation, the first mating end, the second mating end, the third mating end, and the fourth mating end all adopt a rounded corner design.

[0020] As an alternative to the heating rod mounting assembly flange structure, the fixed flange is fixedly connected to the tank body by welding.

[0021] As an alternative to the combined flange structure for heating rod installation, the outer peripheral surface of the positioning step shoulder is provided with anti-slip texture, which fits snugly against the inner wall of the positioning step groove.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a combined flange structure for installing a heating rod. In use, firstly, the fixed flange is fixedly connected to the tank body. Then, the heating rod is inserted into the tank body through the connecting hole between the fixed flange and the tank body, aligning the positioning step shoulder of the heating rod with the position of the fixed flange. Secondly, the first flange and the second flange are fastened together to form a splicing flange, ensuring that the positioning step groove on the inner side of the splicing flange corresponds and fits against the positioning step shoulder of the heating rod. The first and second flanges are thus fixed together using fastening components, simultaneously completing the relative positioning of the splicing flange and the fixed flange, ensuring the positioning step groove tightly abuts against the positioning step shoulder. The splicing flange applies axial pressure to the heating rod for fixation. This combined flange structure for installing a heating rod allows for quick assembly. When the splicing flange or the heating rod is damaged, the fastening components can be loosened to disassemble and replace the parts individually, improving disassembly convenience and eliminating the need for complete scrapping, effectively reducing maintenance costs and downtime, and minimizing resource waste. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the heating rod mounting assembly flange structure described in this embodiment of the utility model;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a cross-sectional view of the heating rod mounting assembly flange structure described in this embodiment of the utility model;

[0027] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the heating rod described in an embodiment of the present invention;

[0029] Figure 6 This is a first schematic diagram of the splicing flange described in this embodiment of the utility model;

[0030] Figure 7 This is a second schematic diagram of the splicing flange described in this embodiment of the utility model;

[0031] Figure 8 This is an exploded view of the heating rod mounting assembly flange structure described in this embodiment of the utility model.

[0032] In the picture:

[0033] 100. Heating rod; 101. Positioning step shoulder; 200. Groove; 201. Connecting hole;

[0034] 1. Fixed flange; 10. Threaded hole;

[0035] 2. Splicing flange; 20. Positioning step groove;

[0036] 21. First flange;

[0037] 211, First mating end; 2110, First mounting hole;

[0038] 212, Second mating end; 2120, Second mounting hole;

[0039] 213, First mounting end; 2130, Third mounting hole;

[0040] 22. Second flange;

[0041] 221. Third mating end; 2210. Fourth mounting hole;

[0042] 222, Fourth mating end; 2220, Fifth mounting hole;

[0043] 223. Second mounting end; 2230. Sixth mounting hole;

[0044] 3. Fastening components; 31. Stud; 32. Nut;

[0045] 4. Sealing gasket;

[0046] 51. First flat washer; 52. First spring washer;

[0047] 61. Second flat washer; 62. Second spring washer. Detailed Implementation

[0048] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0052] like Figures 1-5As shown, this embodiment provides a heating rod mounting assembly flange structure. This heating rod mounting assembly flange structure is used to detachably and fix the heating rod 100 to the groove 200 after passing through the pre-set connecting hole 201 on the groove 200. The heating rod mounting assembly flange structure includes a fixed flange 1, a splicing flange 2, and a fastening assembly 3. The fixed flange 1 is fixedly connected to the groove 200. The heating rod 100 passes through the fixed flange 1 and the connecting hole 201 and extends into the groove 200. The heating rod 100 is provided with a positioning step shoulder 101 arranged along its circumference. The splicing flange 2 includes a first flange 21 and a second flange 22. The first flange 21 and the second flange 22 are fastened together to form an integral splicing flange 2. The inner side of the splicing flange 2 is provided with a positioning step groove 20 that cooperates with the positioning step shoulder 101. The fastening component 3 is used to realize the overall fixation of the splicing flange 2 and the relative positioning of the splicing flange 2 and the fixed flange 1, so that the positioning step groove 20 and the positioning step shoulder 101 fit and abut against each other. The splicing flange 2 applies an axial clamping force to the heating rod 100, thereby realizing the detachable fixed connection between the heating rod 100 and the tank 200.

[0053] When using the heating rod with the combined flange structure, firstly, the fixed flange 1 is fixedly connected to the tank 200. Then, the heating rod 100 is passed through the connecting hole 201 of the fixed flange 1 and the tank 200 and extends into the tank 200, so that the positioning step shoulder 101 of the heating rod 100 corresponds to the position of the fixed flange 1. Secondly, the first flange 21 and the second flange 22 are fastened together to form the splicing flange 2, so that the positioning step groove 20 on the inner side of the splicing flange 2 corresponds to and fits against the positioning step shoulder 101 of the heating rod 100. The first flange 21 and the second flange 22 are fixed together by the fastening component 3, and the relative positioning of the splicing flange 2 and the fixed flange 1 is completed at the same time, so that the positioning step groove 20 tightly abuts against the positioning step shoulder 101. The splicing flange 2 applies axial clamping force to the heating rod 100 to achieve fixation. The heating rod is mounted on a modular flange structure that allows for quick assembly. When the splicing flange 2 or the heating rod 100 is damaged, the fastening component 3 can be loosened to disassemble and replace the parts individually, improving the ease of disassembly and eliminating the need for complete scrapping. This effectively reduces maintenance costs and downtime, and minimizes resource waste.

[0054] like Figures 6-7As shown, the first flange 21 is a first L-shaped part. The ends of the two arms of the first L-shaped part are the first mating end 211 and the second mating end 212, respectively. The right-angle corner of the first L-shaped part is the first mounting end 213. The first mating end 211 is provided with a first mounting hole 2110, the second mating end 212 is provided with a second mounting hole 2120, and the first mounting end 213 is provided with a third mounting hole 2130. Along the axial direction of the heating rod 100, the thickness of the first mating end 211 and the second mating end 212 is half the thickness of the first mounting end 213. The second flange 22 is a second L-shaped part. The ends of the two arms of the second L-shaped part are the third mating end 221 and the fourth mating end 222, respectively. The right-angle corner of the second L-shaped part is the second mounting end 223. The third mating end 221 is provided with a fourth mounting hole 2210, the fourth mating end 222 is provided with a fifth mounting hole 2220, and the second mounting end 223 is provided with a sixth mounting hole 2230. Along the axial direction of the heating rod 100, the thickness of the third mating end 221 and the fourth mating end 222 is half the thickness of the second mounting end 223. When the first flange 21 and the second flange 22 are engaged, the first mating end 211 and the third mating end 221 are complementary in shape and fit together, the first mounting hole 2110 and the fourth mounting hole 2210 are coaxially connected, the second mating end 212 and the fourth mating end 222 are complementary in shape and fit together, the second mounting hole 2120 and the fifth mounting hole 2220 are coaxially connected, the first mounting end 213 and the second mounting end 223 are coplanar, and the first L-shaped piece and the second L-shaped piece form a circular channel to achieve clamping and positioning of the heating rod 100. The structural design of the first flange 21 and the second flange 22 ensures that the splicing flange 2 can securely surround the heating rod 100 after being fastened together, achieving reliable clamping and positioning. The uniform thickness after splicing ensures that the heating rod 100 is subjected to uniform force. The precise alignment of the mounting holes facilitates the subsequent assembly of the fastening component 3. This allows the splicing flange 2 and the heating rod 100 to be detachably and fixedly connected. If the splicing flange 2 or the heating rod 100 is damaged in the future, it can be replaced individually without the need for complete scrapping, thus reducing maintenance costs and resource waste.

[0055] like Figures 6-7 As shown, after the first flange 21 and the second flange 22 are fastened together, the first mating end 211 and the fourth mating end 222 are coplanar, and the second mating end 212 and the third mating end 221 are coplanar, achieving a complementary and interlocking shape between the first L-shaped component and the second L-shaped component. After the first flange 21 and the second flange 22 are fastened together, the first mating end 211 and the fourth mating end 222, and the second mating end 212 and the third mating end 221 are respectively coplanar, achieving a complementary and interlocking shape, making the splicing tighter and more stable, improving the overall structural strength of the spliced ​​flange 2, ensuring more reliable clamping and positioning of the heating rod 100, and facilitating precise alignment of the mounting holes, providing convenience for the assembly of the fastening component 3, and ensuring ease of subsequent disassembly and maintenance.

[0056] like Figure 4 and Figure 8 As shown, the heating rod mounting assembly flange structure also includes a sealing gasket 4. The sealing gasket 4 is sandwiched between the fixed flange 1 and the splicing flange 2. Both sides of the sealing gasket 4 are fitted to the fixed flange 1 and the splicing flange 2 respectively to seal the assembly gap between them. The sealing gasket 4, sandwiched between and fitted to both the fixed flange 1 and the splicing flange 2, effectively seals the assembly gap between them, preventing liquid leakage from the tank 200 through the gap. Simultaneously, in conjunction with the splicing flange 2 to clamp and position the heating rod 100, the sealing gasket 4 experiences uniform force, resulting in a good sealing effect, making the overall installation structure more reliable and reducing malfunctions and maintenance caused by leakage.

[0057] like Figure 4 , Figures 7-8 As shown, the fixed flange 1 has four threaded holes 10 corresponding to the splicing flange 2. The fastening assembly 3 includes four studs 31 and eight nuts 32. The four studs 31 are respectively connected to the following: the first mounting hole 2110 and the fourth mounting hole 2210 and adapted to the corresponding threaded hole 10; the second mounting hole 2120 and the fifth mounting hole 2220 and adapted to the corresponding threaded hole 10; the third mounting hole 2130 and adapted to the corresponding threaded hole 10; and the sixth mounting hole 2230 and adapted to the corresponding threaded hole 10. Each stud 31 is fastened at both ends by two nuts 32. Four studs 31 are threaded through the mounting holes and the threaded holes 10 of the fixed flange 1, respectively. They are tightened at both ends with nuts 32 to achieve a stable connection between the splicing flange 2 and the fixed flange 1. The multi-point tightening ensures that the splicing flange 2 is subjected to uniform force, ensuring reliable clamping and positioning of the heating rod 100. In addition, the nuts 32 are easy to disassemble. If the splicing flange 2 or the heating rod 100 is damaged in the future, it can be replaced individually without the need for complete scrapping, thus reducing maintenance costs and resource waste.

[0058] like Figure 4 and Figure 8 As shown, the heating rod mounting assembly flange structure also includes a first flat washer 51 and a first spring washer 52. The first flat washer 51 and the first spring washer 52 are sequentially arranged along the splicing flange 2 to the corresponding nut 32, and are sandwiched between the splicing flange 2 and the corresponding nut 32. The first flat washer 51 is in contact with the splicing flange 2, and the first spring washer 52 is in contact with the nut 32. The combined arrangement of the first flat washer 51 and the first spring washer 52 can distribute the pressure of the nut 32 on the splicing flange 2, avoiding damage caused by excessive local force; the first spring washer 52 can generate elastic preload, effectively preventing the nut 32 from loosening due to vibration, ensuring fastening stability. Combined with the sealing and clamping structure, this makes the installation of the heating rod 100 more reliable and reduces maintenance frequency.

[0059] like Figure 4 and Figure 8As shown, the heating rod mounting assembly flange structure also includes a second flat washer 61 and a second spring washer 62. The second flat washer 61 and the second spring washer 62 are arranged sequentially along the direction from the fixed flange 1 to the nut 32 on its corresponding side, and are sandwiched between the fixed flange 1 and the nut 32 on the corresponding side. The second flat washer 61 is in contact with the fixed flange 1, and the second spring washer 62 is in contact with the nut 32. The combination of the second flat washer 61 and the second spring washer 62 can distribute the pressure of the nut 32 on the fixed flange 1, avoiding local damage to the fixed flange 1; the elastic preload of the second spring washer 62 can prevent the nut 32 from loosening due to vibration, enhance the reliability of the fastening, and, together with the sealing and clamping structure, make the heating rod 100 more securely installed, reducing the maintenance needs caused by loosening.

[0060] like Figures 6-8 As shown, the first mating end 211, the second mating end 212, the third mating end 221, and the fourth mating end 222 all adopt a rounded corner design. The rounded corner design of the first mating end 211, the second mating end 212, the third mating end 221, and the fourth mating end 222 can eliminate sharp edges and prevent scratches to operators or damage to parts during assembly; at the same time, it can reduce stress concentration, improve the structural strength of the mating ends, and ensure the safety and durability of the spliced ​​flange 2 assembly.

[0061] In this embodiment, the fixed flange 1 and the tank body 200 are fixedly connected by welding. Welding the fixed flange 1 and the tank body 200 forms a stable and reliable connection structure, effectively resisting the vibration of the heating rod 100 during operation and the impact of the liquid inside the tank body 200, preventing the connection from loosening. At the same time, the welding provides good sealing, preventing liquid leakage from the connecting hole 201 of the tank body 200, providing a solid foundation for the stable installation and operation of the heating rod 100.

[0062] In this embodiment, the outer peripheral surface of the positioning step shoulder 101 is provided with anti-slip texture, which fits snugly against the inner wall of the positioning step groove 20. The anti-slip texture on the outer peripheral surface of the positioning step shoulder 101 fits snugly against the inner wall of the positioning step groove 20, which increases the friction between the two, making the fit tighter and effectively preventing the heating rod 100 from axial or circumferential displacement due to vibration during operation, improving the fixation reliability, strengthening the clamping effect of the splicing flange 2 on the heating rod 100, and ensuring the stable operation of the heating rod 100.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heating rod mounting assembly flange structure, used to allow the heating rod (100) to pass through a pre-set connecting hole (201) on the groove body (200) and achieve a detachable and fixed connection with the groove body (200), characterized in that, The heating rod mounting assembly flange structure includes: A fixed flange (1) is fixedly connected to the tank body (200). The heating rod (100) passes through the fixed flange (1) and the connecting hole (201) and extends into the tank body (200). The heating rod (100) is provided with a positioning step shoulder (101) arranged along its circumference. The splicing flange (2) includes a first flange (21) and a second flange (22). The first flange (21) and the second flange (22) are fastened together to form the splicing flange (2) as a whole. The inner side of the splicing flange (2) is provided with a positioning step groove (20) that cooperates with the positioning step shoulder (101). The fastening assembly (3) is configured to achieve overall fixation of the splicing flange (2) and relative positioning of the splicing flange (2) and the fixed flange (1), so that the positioning step groove (20) and the positioning step shoulder (101) fit and abut against each other, and the splicing flange (2) applies axial clamping force to the heating rod (100), thereby achieving a detachable fixed connection between the heating rod (100) and the groove (200).

2. The heating rod mounting assembly flange structure according to claim 1, characterized in that, The first flange (21) is a first L-shaped part. The ends of the two arms of the first L-shaped part are a first mating end (211) and a second mating end (212), respectively. The right-angle corner of the first L-shaped part is a first mounting end (213). The first mating end (211) is provided with a first mounting hole (2110), the second mating end (212) is provided with a second mounting hole (2120), and the first mounting end (213) is provided with a third mounting hole (2130). Along the axial direction of the heating rod (100), the thickness of the first mating end (211) and the second mating end (212) is half the thickness of the first mounting end (213). The second flange (22) is a second L-shaped part. The ends of the two arms of the second L-shaped part are the third mating end (221) and the fourth mating end (222), respectively. The right-angle corner of the second L-shaped part is the second mounting end (223). The third mating end (221) is provided with a fourth mounting hole (2210), the fourth mating end (222) is provided with a fifth mounting hole (2220), and the second mounting end (223) is provided with a sixth mounting hole (2230). Along the axial direction of the heating rod (100), the thickness of the third mating end (221) and the fourth mating end (222) are both half the thickness of the second mounting end (223). When the first flange (21) and the second flange (22) are engaged, the first mating end (211) and the third mating end (221) are complementary in shape and fit together, the first mounting hole (2110) and the fourth mounting hole (2210) are coaxially connected, the second mating end (212) and the fourth mating end (222) are complementary in shape and fit together, the second mounting hole (2120) and the fifth mounting hole (2220) are coaxially connected, the first mounting end (213) and the second mounting end (223) are coplanar, and the first L-shaped piece and the second L-shaped piece form a circular channel to achieve clamping and positioning of the heating rod (100).

3. The heating rod mounting assembly flange structure according to claim 2, characterized in that, After the first flange (21) and the second flange (22) are engaged, the first mating end (211) and the fourth mating end (222) are coplanar, and the second mating end (212) and the third mating end (221) are coplanar, so as to realize that the shapes of the first L-shaped part and the second L-shaped part are staggered and complementary.

4. The heating rod mounting combined flange structure according to claim 2, characterized in that, The heating rod mounting assembly flange structure also includes a sealing gasket (4), which is sandwiched between the fixed flange (1) and the splicing flange (2). The two sides of the sealing gasket (4) are respectively fitted to the fixed flange (1) and the splicing flange (2) to seal the assembly gap between the fixed flange (1) and the splicing flange (2).

5. The heating rod mounting assembly flange structure according to claim 2, characterized in that, The fixed flange (1) is provided with four threaded holes (10) corresponding to the splicing flange (2). The fastening assembly (3) includes four studs (31) and eight nuts (32). The four studs (31) are respectively connected to: the first mounting hole (2110) and the fourth mounting hole (2210) and adapted to the corresponding threaded hole (10); the second mounting hole (2120) and the fifth mounting hole (2220) and adapted to the corresponding threaded hole (10); the third mounting hole (2130) and adapted to the corresponding threaded hole (10); and the sixth mounting hole (2230) and adapted to the corresponding threaded hole (10). Each stud (31) is fastened at both ends by two nuts (32).

6. The heating rod mounting combined flange structure according to claim 5, characterized in that, The heating rod mounting assembly flange structure also includes a first flat washer (51) and a first spring washer (52). The first flat washer (51) and the first spring washer (52) are arranged sequentially along the splicing flange (2) to the nut (32) on its corresponding side, and are sandwiched between the splicing flange (2) and the nut (32) on the corresponding side. The first flat washer (51) is in contact with the splicing flange (2), and the first spring washer (52) is in contact with the nut (32).

7. The heating rod mounting combined flange structure according to claim 5, characterized in that, The heating rod mounting assembly flange structure also includes a second flat washer (61) and a second spring washer (62). The second flat washer (61) and the second spring washer (62) are arranged sequentially along the direction from the fixed flange (1) to the nut (32) on its corresponding side, and are sandwiched between the fixed flange (1) and the nut (32) on the corresponding side. The second flat washer (61) is in contact with the fixed flange (1), and the second spring washer (62) is in contact with the nut (32).

8. The heating rod mounting assembly flange structure according to any one of claims 2-7, characterized in that, The first mating end (211), the second mating end (212), the third mating end (221), and the fourth mating end (222) all adopt a rounded corner design.

9. The heating rod mounting assembly flange structure according to any one of claims 1-7, characterized in that, The fixed flange (1) and the tank (200) are fixedly connected by welding.

10. The heating rod mounting assembly flange structure according to any one of claims 1-7, characterized in that, The outer periphery of the positioning step shoulder (101) is provided with anti-slip texture, which fits snugly against the inner wall of the positioning step groove (20).

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