A continuous vulcanized rubber cable production line suitable for two-system production

Abstract

The application provides a continuous vulcanized rubber cable production line suitable for double-system production, and belongs to the technical field of cable rubber vulcanization, and comprises an upper traction mechanism, an extruder, a heating section, a cooling section and a lower traction mechanism arranged in sequence along the traction direction of the cable; the end parts of the heating section and the cooling section away from each other are provided with sealing devices; wherein the heating section is connected with a nitrogen machine valve group and a steam machine valve group through pipelines at the inlet; the cooling section is provided with a cooling water circulation system; the cooling section is provided with a nitrogen cooling balance system, which is used for controlling the water level balance and nitrogen balance in the cooling section when nitrogen is introduced into the heating section and the cooling section; when steam is introduced into the heating section, the nitrogen cooling balance system is in a closed state. According to the characteristics and production requirements of the cable, the application can select to introduce nitrogen or steam for vulcanization, the design of the double system avoids the problem that two separate vulcanization production lines need to be used in the prior art, and the production cost and the floor area are reduced.

Description

Technical Field

[0001] This application belongs to the technical field of cable rubber vulcanization, and more specifically, relates to a continuous vulcanization rubber cable production line suitable for dual-system production. Background Technology

[0002] In the vulcanization process of rubber cable production lines, steam vulcanization or nitrogen vulcanization are often used.

[0003] Steam vulcanization, as a traditional vulcanization method, uses steam as a heat carrier to quickly and evenly transfer heat energy to all parts of the rubber cable, ensuring the consistency of rubber vulcanization and avoiding under-vulcanization or over-vulcanization.

[0004] Compared to traditional steam vulcanization, nitrogen vulcanization uses an inert gas to expel oxygen and moisture from the vulcanization pipeline, creating an oxygen-free and dry environment. This prevents oxidation and bubble formation, resulting in a denser cross-linking of the rubber. This process is suitable for rubber cables with high requirements for electrical and mechanical properties.

[0005] Depending on the different requirements of the production process, different gas systems are selected. In the existing technology, steam system production lines and nitrogen system production lines need to be set up independently. This separate production layout not only leads to a significant increase in equipment investment costs, but also occupies a large amount of factory space. Summary of the Invention

[0006] The purpose of this application is to provide a continuous vulcanized rubber cable production line suitable for dual-system production, so as to solve the technical problems of existing technologies that require two separate vulcanization production lines to separately introduce nitrogen or steam for different types of cable vulcanization operations, which are costly and require a large area.

[0007] To achieve the above objectives, the technical solution adopted in this application is: to provide a continuous vulcanized rubber cable production line suitable for dual-system production, including an upper traction mechanism, an extruder, a heating section, a cooling section, and a lower traction mechanism arranged sequentially along the cable traction direction; the heating section and the cooling section are each provided with a sealing device at their far ends, the sealing device being used to seal the inlet of the heating section and the outlet of the cooling section and to allow the cable to pass through;

[0008] The heating section inlet is connected to a nitrogen generator valve group and a steam generator valve group via pipelines; the cooling section is equipped with a cooling water circulation system for circulating and cooling the cables in the cooling section; the cooling section is equipped with a nitrogen cooling balance system for controlling the water level balance and nitrogen balance in the cooling section when nitrogen is introduced into the heating section and the cooling section; the nitrogen cooling balance system is in a closed state when steam is introduced into the heating section.

[0009] In one possible implementation, based on the above technical solutions, the heating section and the cooling section are inclined downwards along the cable traction direction; the nitrogen cooling balance system includes a water-cooled jacket, a differential pressure tank, and a drain valve; the water-cooled jacket is located at the inlet of the cooling section for preliminary cooling of nitrogen; the differential pressure tank is located in the upper half of the cooling section for controlling water level balance and nitrogen balance; and the drain valve is located on the cooling section for discharging impurities generated by the reaction between nitrogen and cooling water.

[0010] In one possible implementation, based on the above technical solutions, the cooling water circulation system includes a circulating water tank, a water pump, an inlet pipe, and a return pipe; the water pump is connected between the circulating water tank and the inlet pipe, and the inlet pipe is connected to the cooling section near its tail end; the return pipe is connected between the cooling section and the circulating water tank.

[0011] In one possible implementation, based on the above technical solutions, a differential pressure controller is provided between the heating section inlet and the cooling section outlet.

[0012] In one possible implementation, based on the above technical solutions, the sealing device includes a sealing sleeve, a connecting assembly, and a sealing adjustment mechanism; the sealing sleeve is coaxially sleeved at the inlet of the heating section or the outlet of the cooling section; the connecting assembly is disposed at one end of the sealing sleeve and is used to seal the sealing sleeve to the heating section or the cooling section.

[0013] The sealing adjustment mechanism includes a fan-shaped sealing plate and a first driving assembly. The fan-shaped sealing plates are multiple and circumferentially distributed inside the sealing sleeve. When the inner circumferential surface of the fan-shaped sealing plate is in contact with the cable, the sides of adjacent fan-shaped sealing plates are in contact with each other to seal the cable. The fan-shaped sealing plates are slidably connected to the sealing sleeve along their own radial direction. The first driving assembly is used to simultaneously drive the multiple fan-shaped sealing plates to move closer to or away from the cable.

[0014] In one possible implementation, in conjunction with the above technical solutions, the sealing device further includes a sector-shaped auxiliary plate and a second driving assembly. The sector-shaped auxiliary plate has multiple auxiliary plates, each corresponding to a sector-shaped sealing plate. The sector-shaped auxiliary plate is slidably embedded in the sector-shaped sealing plate, and the inner circumferential surface of the sector-shaped auxiliary plate is coplanar with the inner circumferential surface of the sector-shaped sealing plate. The sliding direction of the sector-shaped auxiliary plate is coaxial with the axis of the sector-shaped sealing plate.

[0015] The second driving component is used to simultaneously drive multiple fan-shaped auxiliary plates to slide in the same direction, so that the side of the fan-shaped auxiliary plate is in contact with the side of the adjacent fan-shaped sealing plate.

[0016] In one possible implementation, in conjunction with the above technical solutions, the sealing device further includes multiple sector-shaped reinforcing plates and multiple sets of linkage components, wherein the sector-shaped reinforcing plates and the linkage components correspond one-to-one with the sector-shaped auxiliary plates; the sector-shaped reinforcing plates are slidably embedded in the sector-shaped auxiliary plates, and the sector-shaped auxiliary plates and the inner circumferential surfaces of the sector-shaped reinforcing plates are coplanar;

[0017] The linkage component includes an arc-shaped slider and a limiting block. An arc-shaped groove is formed on the inner wall of the sector-shaped sealing plate. The arc-shaped slider is slidably disposed in the arc-shaped groove and fixed to the sector-shaped reinforcing plate. The sliding direction of the arc-shaped slider is not coaxial with the axis of the sector-shaped sealing plate. The arc-shaped groove gradually approaches the axis of the sector-shaped sealing plate from its beginning to its end. A limiting groove is formed on the side of the sector-shaped auxiliary plate away from the arc-shaped groove. The limiting block is slidably disposed in the limiting groove and fixed to the sector-shaped reinforcing plate. The sliding direction of the limiting block is consistent with the radial direction of the sector-shaped sealing plate.

[0018] In one possible implementation, based on the above technical solutions, the inner circumferential surfaces of the sector-shaped sealing plate, the sector-shaped auxiliary plate, and the sector-shaped reinforcing plate are all provided with an elastic layer.

[0019] In one possible implementation, based on the above technical solutions, the first driving assembly includes a sliding column, a compression ring, a threaded tube, and a positioning bolt. Multiple sliding columns are present, each corresponding to one of the sector-shaped sealing plates. One end of each sliding column is fixed to the outer circumferential surface of the sector-shaped sealing plate, and the other end extends through the sealing sleeve. The compression ring is coaxially sleeved on the sealing sleeve and slides axially along the sealing sleeve. The threaded tube is threaded onto the sealing sleeve and rotatably coaxially connected to the compression ring. The positioning bolt is vertically threaded onto the threaded tube and is used to press against the sealing sleeve.

[0020] The extrusion ring includes a circular ring section and a flared section. The circular ring section is rotatably connected to the threaded pipe. The inner circumferential surface of the flared section is conical. All the outer ends of the sliding columns are fixed with T-shaped blocks. The inner circumferential surface of the flared section is provided with multiple T-shaped grooves along its flaring direction. The T-shaped blocks slide one by one in the T-shaped grooves.

[0021] In one possible implementation, based on the above technical solutions, the second drive assembly includes a rotating ring, a telescopic column, a drive motor, and a gear set; the rotating ring is coaxially rotatably disposed on the inner circumferential surface of the sealing sleeve, and there are multiple telescopic columns that correspond one-to-one with the fan-shaped auxiliary plate. One end of the telescopic column is fixed to the rotating ring, and the other end is fixed to the fan-shaped auxiliary plate. The telescopic direction of the telescopic column is consistent with the radial direction of the fan-shaped sealing plate.

[0022] The drive motor is located on one side of the sealing sleeve, and the gear set is connected between the output shaft of the drive motor and the rotating ring. The drive motor drives the rotating ring to rotate through the gear set.

[0023] The beneficial effects of the continuous vulcanized rubber cable production line applicable to dual-system production provided in this application are as follows: Compared with the prior art, this application can effectively seal the inlet of the heating section and the outlet of the cooling section through the sealing device, preventing the leakage of high-temperature gas in the heating section and cooling water in the cooling section, reducing energy loss and water waste, and improving the energy utilization efficiency and environmental performance of the production process; on the other hand, the sealing device can also allow the cable to pass through smoothly, ensuring the normal operation of the production process.

[0024] Furthermore, the heating section inlet is connected to both a nitrogen gas valve group and a steam gas valve group via pipelines, enabling flexible application of the dual system. When different types of cables need to be vulcanized, nitrogen or steam can be selected for vulcanization based on the cable's characteristics and production requirements. This dual-system design avoids the need for two separate vulcanization production lines found in existing technologies, significantly reducing production costs and floor space requirements, and improving the versatility and applicability of the production equipment.

[0025] Finally, the cooling water circulation system and nitrogen cooling balance system installed in the cooling section play crucial roles. The cooling water circulation system provides continuous and stable cooling to the cables in the cooling section, ensuring consistent and reliable cooling performance. The nitrogen cooling balance system precisely controls the water level and nitrogen balance in the cooling section when nitrogen is introduced into both the heating and cooling sections, ensuring the safety and stability of the production process. When steam is introduced into the heating section, the nitrogen cooling balance system is shut off, preventing interference between systems and further improving the controllability of the production process. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This application provides an overall schematic diagram of a continuous vulcanized rubber cable production line suitable for dual-system production.

[0028] Figure 2 A partial schematic diagram of the cooling water circulation system and the nitrogen cooling balance system provided in the embodiments of this application;

[0029] Figure 3 This is a partial schematic diagram of the nitrogen cooling balance system provided in the embodiments of this application;

[0030] Figure 4 This is a partial schematic diagram of a cooling water circulation system provided in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the sealing device provided in the embodiments of this application;

[0032] Figure 6 A vertical sectional view of the sealing device provided in the embodiments of this application;

[0033] Figure 7 for Figure 6 A partially enlarged schematic diagram of the sector-shaped reinforcing plate and linkage components provided in Part A;

[0034] Figure 8 A front view of multiple sector-shaped sealing plates when they are fitted together, as provided in an embodiment of this application;

[0035] Figure 9 This is a front view of the multiple sector-shaped sealing plates after they have been moved outward, as provided in the embodiments of this application.

[0036] Figure 10 This is a front view of multiple sector-shaped auxiliary plates after they rotate synchronously, as provided in an embodiment of this application.

[0037] The labels for the attached figures are as follows:

[0038] 1. Upper traction mechanism;

[0039] 2. Extruder;

[0040] 3. Heating section; 31. Nitrogen generator valve assembly; 32. Steam generator valve assembly;

[0041] 4. Cooling section; 41. Differential pressure controller; 42. Vortex air pump;

[0042] 5. Lower traction mechanism;

[0043] 6. Sealing device; 61. Sealing sleeve; 62. Connecting assembly; 63. Sealing adjustment mechanism; 631. Fan-shaped sealing plate; 6311. Arc-shaped slide groove; 632. First drive assembly; 6321. Sliding column; 6322. Extrusion ring; 6323. Threaded pipe; 6324. Positioning bolt; 633. Fan-shaped auxiliary plate; 6331. Limiting groove; 634. Second drive assembly; 6341. Rotating ring; 6342. Telescopic column; 6343. Drive motor; 6344. Gear set; 635. Fan-shaped reinforcing plate; 636. Linkage assembly; 6361. Arc-shaped slider; 6362. Limiting block; 637. Elastic layer;

[0044] 7. Cooling water circulation system; 71. Circulating water tank; 72. Water pump; 73. Inlet pipe; 74. Return pipe;

[0045] 8. Nitrogen cooling balance system; 81. Water cooling jacket; 82. Differential pressure tank; 83. Drain valve. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0048] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0049] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0050] The present application provides a description of a continuous vulcanized rubber cable production line suitable for dual-system production.

[0051] like Figure 1 and Figure 2As shown, one embodiment of this application provides a continuous vulcanized rubber cable production line suitable for dual-system production, including an upper traction mechanism 1, an extruder 2, an electrostatic powder mill, a heating section 3, a cooling section 4, and a lower traction mechanism 5 arranged sequentially along the cable traction direction; sealing devices 6 are provided at the ends of the heating section 3 and the cooling section 4 that are far apart from each other, and the sealing devices 6 are used to seal the inlet of the heating section 3 and the outlet of the cooling section 4 and allow the cable to pass through.

[0052] The heating section 3 is connected to a nitrogen valve group 31 and a steam valve group 32 via pipelines at its inlet. A cooling water circulation system 7 is installed in the cooling section 4 to circulate and cool the cables in the cooling section 4. A nitrogen cooling balance system 8 is installed in the cooling section 4 to control the water level balance and nitrogen balance in the cooling section 4 when nitrogen is introduced into the heating section 3 and the cooling section 4. When steam is introduced into the heating section 3, the nitrogen cooling balance system 8 is in the closed state.

[0053] In this embodiment, the upper traction mechanism 1, extruder 2, electrostatic powder separator, and lower traction mechanism 5 are all existing technologies and will not be described in detail here. The heating section 3 and cooling section 4 are mutually sealed pipes. An electric heating line is provided on the outside of the heating section 3. The electric heating line mainly heats the gas when nitrogen is introduced and plays an auxiliary heating role when steam is introduced.

[0054] This embodiment provides a continuous vulcanized rubber cable production line suitable for dual-system production. Compared with the prior art, the sealing device 6 can effectively seal the inlet of the heating section 3 and the outlet of the cooling section 4, preventing the leakage of high-temperature gas in the heating section 3 and cooling water in the cooling section 4, reducing energy loss and water waste, and improving the energy utilization efficiency and environmental performance of the production process. On the other hand, the sealing device 6 can also allow the cable to pass through smoothly, ensuring the normal operation of the production process.

[0055] Furthermore, the inlet of heating section 3 is connected to nitrogen valve group 31 and steam valve group 32 via pipelines, enabling flexible application of the dual system. When vulcanizing different types of cables, nitrogen or steam can be selected for vulcanization based on the cable's characteristics and production requirements. This dual-system design avoids the problem of needing two separate vulcanization production lines in existing technologies, significantly reducing production costs and floor space, and improving the versatility and applicability of the production equipment.

[0056] Finally, the cooling water circulation system 7 and the nitrogen cooling balance system 8, located at cooling section 4, each play a crucial role. The cooling water circulation system 7 enables the recycling of cooling water, providing continuous and stable cooling to the cables in cooling section 4, ensuring consistent and reliable cooling performance. The nitrogen cooling balance system 8, when nitrogen is introduced into heating section 3 and cooling section 4, precisely controls the water level and nitrogen balance within cooling section 4, ensuring the safety and stability of the production process. When steam is introduced into heating section 3, the nitrogen cooling balance system 8 is shut off, preventing interference between systems and further improving the controllability of the production process.

[0057] like Figures 2 to 3 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0058] Heating section 3 and cooling section 4 are inclined downwards along the cable pulling direction; nitrogen cooling balance system 8 includes water-cooled jacket 81, differential pressure tank 82 and drain valve 83. Water-cooled jacket 81 is installed at the inlet of cooling section 4 for preliminary cooling of nitrogen.

[0059] Differential pressure tank 82 is located in the upper half of cooling section 4 to control water level balance and nitrogen balance; drain valve 83 is located in cooling section 4 to discharge impurities generated by the reaction of nitrogen and cooling water.

[0060] Water-cooled jacket 81 is installed at the inlet of cooling section 4 to provide preliminary cooling for the nitrogen entering cooling section 4, reducing the nitrogen temperature, lessening the burden on subsequent cooling equipment, and improving cooling efficiency. Differential pressure tank 82 is located in the upper part of cooling section 4. Through precise pressure control, it can effectively regulate the water level and nitrogen pressure within cooling section 4, ensuring system stability. Drain valve 83 is installed on cooling section 4 to promptly discharge impurities generated by the reaction between nitrogen and cooling water, preventing impurity accumulation from damaging the system and extending equipment lifespan.

[0061] In this embodiment, a vortex air pump 42 is installed on the cooling section 4. The vortex air pump 42 is installed on the cooling section 4 to discharge nitrogen or steam in the cooling section 4 after the vulcanization operation is completed, so as to prepare for the next production and improve production efficiency.

[0062] like Figure 2 and Figure 4 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0063] The cooling water circulation system 7 includes a circulating water tank 71, a water pump 72, an inlet pipe 73, and a return pipe 74; the water pump 72 is connected between the circulating water tank 71 and the inlet pipe 73, and the inlet pipe 73 is connected to the cooling section 4 near its tail end; the return pipe 74 is connected between the cooling section 4 and the circulating water tank 71.

[0064] Water pump 72 is connected between circulating water tank 71 and inlet pipe 73, providing power for the circulation of cooling water and transporting the cooling water in circulating water tank 71 to cooling section 4. Inlet pipe 73 is connected to the cooling section 4 near its tail end, allowing cooling water to enter from the tail end of the cooling section 4, ensuring full contact with the cables and improving cooling efficiency. Return pipe 74 is connected between cooling section 4 and circulating water tank 71, returning the cooled water to circulating water tank 71, achieving the recycling of cooling water. This not only saves water resources and reduces production costs but also minimizes environmental impact.

[0065] like Figure 1 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0066] A differential pressure controller 41 is installed between the inlet of heating section 3 and the outlet of cooling section 4.

[0067] The differential pressure controller 41 can monitor the pressure difference between the heating section 3 and the cooling section 4 in real time and make precise adjustments based on the monitoring results. During the production process, the pressure in the heating section 3 and the cooling section 4 is affected by various factors, such as the gas flow rate and temperature changes. If the pressure difference is too large or too small, it may lead to instability in the production process, affecting the quality of the cable and production efficiency. The differential pressure controller 41 can detect changes in the pressure difference in a timely manner and maintain the pressure difference within a suitable range by adjusting the operating parameters of relevant equipment, ensuring pressure stability in the heating section 3 and the cooling section 4, and improving the safety and reliability of the production process.

[0068] like Figure 5 and Figure 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0069] The sealing device 6 includes a sealing sleeve 61, a connecting assembly 62, and a sealing adjustment mechanism 63; the sealing sleeve 61 is coaxially sleeved at the inlet of the heating section 3 or the outlet of the cooling section 4; the connecting assembly 62 is disposed at one end of the sealing sleeve 61 and is used to seal the sealing sleeve 61 to the heating section 3 or the cooling section 4.

[0070] The sealing adjustment mechanism 63 includes a fan-shaped sealing plate 631 and a first drive assembly 632. Multiple fan-shaped sealing plates 631 are circumferentially distributed inside the sealing sleeve 61. When the inner circumferential surface of the fan-shaped sealing plate 631 is in contact with the cable, the sides of adjacent fan-shaped sealing plates 631 are in contact with each other to seal the connection between the sealing sleeve 61 and the cable. The fan-shaped sealing plates 631 are slidably connected to the sealing sleeve 61 radially. The first drive assembly 632 is used to simultaneously move multiple fan-shaped sealing plates 631 closer to or further away from the cable.

[0071] Specifically, in this embodiment, the connecting component 62 can be a flange and multiple bolts. The flange is fixed to the heating section 3 or the cooling section 4 and fits against one end of the sealing sleeve 61. One end of the bolt passes through the flange and is tightened into the sealing sleeve 61. A sealing ring is provided between the sealing sleeve 61 and the flange.

[0072] The sealing sleeve 61 is coaxially fitted at the inlet of the heating section 3 or the outlet of the cooling section 4, providing a basic structure for sealing. The connecting assembly 62 seals the sealing sleeve 61 to the heating section 3 or the cooling section 4, ensuring the sealing performance between the sealing sleeve 61 and the pipeline and preventing gas and liquid leakage.

[0073] Multiple sector-shaped sealing plates 631 are used to seal the space between the cable and the inner wall of the sealing sleeve 61. After the cable passes through the sealing sleeve 61, the first driving component 632 can drive the multiple sector-shaped sealing plates 631 to move closer to each other until the inner circumferential surface of the sector-shaped sealing plate 631 is in contact with the cable, thereby achieving a seal around the cable of a specified size. This can effectively prevent the leakage of high-temperature gas in the heating section 3 and cooling water in the cooling section 4, ensuring the safety and stability of the production process.

[0074] like Figure 6 , Figures 8 to 10 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0075] The sealing device 6 also includes a sector-shaped auxiliary plate 633 and a second drive assembly 634. There are multiple sector-shaped auxiliary plates 633, which correspond one-to-one with the sector-shaped sealing plates 631. The sector-shaped auxiliary plates 633 are slidably embedded in the sector-shaped sealing plates 631, and the inner circumferential surface of the sector-shaped auxiliary plates 633 is coplanar with the inner circumferential surface of the sector-shaped sealing plates 631. The sliding direction of the sector-shaped auxiliary plates 633 is coaxial with the axis of the sector-shaped sealing plates 631.

[0076] The second drive assembly 634 is used to simultaneously drive multiple sector-shaped auxiliary plates 633 to slide in the same direction, so that the side of the sector-shaped auxiliary plate 633 is in contact with the side of the adjacent sector-shaped sealing plate 631.

[0077] When vulcanizing cables of different sizes, the first drive assembly 632 first drives the inner circumferential surfaces of multiple sector-shaped sealing plates 631 to adhere to the cable. If gaps exist between adjacent sector-shaped sealing plates 631, the second drive assembly 634 drives all sector-shaped auxiliary plates 633 to slide outwards until the sides of the auxiliary plates 633 adhere to the sides of adjacent sector-shaped sealing plates 631, filling any gaps between the sealing plates 631 and improving the integrity of the seal. During the sealing process, the sector-shaped auxiliary plates 633 can tightly cooperate with the sector-shaped sealing plates 631 to form a tight sealing structure, effectively preventing gas and liquid leakage, and is suitable for the production of cables of different sizes.

[0078] like Figures 6 to 7 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0079] The sealing device 6 also includes multiple sector-shaped reinforcing plates 635 and multiple sets of linkage components 636. The sector-shaped reinforcing plates 635 and linkage components 636 correspond one-to-one with the sector-shaped auxiliary plates 633. The sector-shaped reinforcing plates 635 are slidably embedded in the sector-shaped auxiliary plates 633, and the inner circumferential surfaces of the sector-shaped auxiliary plates 633 and the sector-shaped reinforcing plates 635 are coplanar.

[0080] The linkage component 636 includes an arc-shaped slider 6361 and a limiting block 6362, and the inner wall of the fan-shaped sealing plate 631 is provided with an arc-shaped groove 6311 (see reference). Figure 7 and Figure 9 The arc-shaped slider 6361 is slidably disposed in the arc-shaped groove 6311 and fixed with the fan-shaped reinforcing plate 635. The sliding direction of the arc-shaped slider 6361 is not coaxial with the axis of the fan-shaped sealing plate 631. The arc-shaped groove 6311 gradually approaches the axis of the fan-shaped sealing plate 631 from its beginning to its end.

[0081] A limiting groove 6331 is provided on the side of the fan-shaped auxiliary plate 633 away from the arc-shaped slide groove 6311. The limiting block 6362 is slidably disposed in the limiting groove 6331 and fixed with the fan-shaped reinforcing plate 635. The sliding direction of the limiting block 6362 is consistent with the radial direction of the fan-shaped sealing plate 631.

[0082] When the second drive assembly 634 drives the fan-shaped auxiliary plate 633 to slide outward, the fan-shaped auxiliary plate 633 drives the fan-shaped reinforcing plate 635 to slide outward along with it through the limiting block 6362. At the same time, the fan-shaped reinforcing plate 635 is guided by the arc-shaped slider 6361 and the arc-shaped groove 6311, so that it further presses against the cable direction while sliding outward, which further improves the sealing effect around the cable, and there is no need to set up an additional power source and extra operation steps.

[0083] like Figures 6 to 7 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0084] An elastic layer 637 is provided on the inner circumferential surface of the fan-shaped sealing plate 631, the fan-shaped auxiliary plate 633, and the fan-shaped reinforcing plate 635.

[0085] In some possible embodiments, the elastic layer 637 is made of rubber, and its specific elastic coefficient can be selected and adjusted according to the actual situation.

[0086] The elastic layer 637 provides better sealing performance and cushioning. During the sealing process, the elastic layer 637 can fit tightly against the cable surface, filling in minor unevenness and further improving the sealing effect. Simultaneously, the elastic layer 637 can also buffer the friction between the cable and the sealing device 6, reducing wear on the cable surface and protecting the cable's quality. Furthermore, the elastic layer 637 can adapt to minor vibrations and displacements of the cable during transportation, ensuring the stability and reliability of the seal.

[0087] like Figures 5 to 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0088] The first drive assembly 632 includes a sliding column 6321, a compression ring 6322, a threaded tube 6323, and a positioning bolt 6324. Multiple sliding columns 6321 are present, each corresponding to a sector-shaped sealing plate 631. One end of each sliding column 6321 is fixed to the outer circumferential surface of the sector-shaped sealing plate 631, and the other end extends through the sealing sleeve 61. The compression ring 6322 is coaxially sleeved on the sealing sleeve 61 and slides axially along the sealing sleeve 61. The threaded tube 6323 is threadedly connected to the sealing sleeve 61 and is coaxially rotatably connected to the compression ring 6322. The positioning bolt 6324 is vertically threadedly connected to the threaded tube 6323 and is used to tighten the sealing sleeve 61.

[0089] The extrusion ring 6322 includes a circular ring section and a flared section. The circular ring section is rotatably connected to the threaded pipe 6323. The inner circumferential surface of the flared section is conical. All sliding columns 6321 have T-shaped blocks fixed at their outer ends. The inner circumferential surface of the flared section has multiple T-shaped grooves along its flaring direction. The T-shaped blocks slide in the T-shaped grooves one by one.

[0090] When the position of the sector-shaped sealing plate 631 needs to be adjusted, the threaded tube 6323 is rotated to drive the extrusion ring 6322 to slide. The conical surface at the flared section, through the cooperation of the T-groove and the T-block, allows the sliding column 6321 to move synchronously inward or outward according to the direction of movement of the extrusion ring 6322. This allows the operator to easily adjust the position of the sector-shaped sealing plate 631 by rotating the threaded tube 6323, making the operation simple and convenient.

[0091] Meanwhile, the threaded connection of the threaded tube 6323 has a precise adjustment function, which can achieve precise control of the position of the sector sealing plate 631, ensuring the consistency and reliability of the sealing effect. Combined with the tightening of the positioning bolt 6324 after the threaded tube 6323 has been rotated, the operational stability of the threaded tube 6323 and the extrusion ring 6322 can be further improved.

[0092] like Figures 5 to 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows:

[0093] The second drive assembly 634 includes a rotating ring 6341, a telescopic column 6342, a drive motor 6343, and a gear set 6344. The rotating ring 6341 is coaxially rotatably disposed on the inner circumferential surface of the sealing sleeve 61. There are multiple telescopic columns 6342, each corresponding to a sector-shaped auxiliary plate 633. One end of the telescopic column 6342 is fixed to the rotating ring 6341, and the other end is fixed to the sector-shaped auxiliary plate 633. The telescopic direction of the telescopic column 6342 is consistent with the radial direction of the sector-shaped sealing plate 631.

[0094] The drive motor 6343 is located on one side of the sealing sleeve 61, and the gear set 6344 is connected between the output shaft of the drive motor 6343 and the rotating ring 6341. The drive motor 6343 drives the rotating ring 6341 to rotate through the gear set 6344.

[0095] Specifically, in this embodiment, the gear set 6344 uses two meshing bevel gears, one of which is coaxially fixed to the rotating ring 6341, and the other is coaxially fixed to the output shaft of the drive motor 6343. A protective cover can be provided on the outside of the gear set 6344 for its protection.

[0096] After the first drive assembly 632 drives the inner circumferential surfaces of multiple sector-shaped sealing plates 631 to adhere to the cable, if there is a gap between adjacent sector-shaped sealing plates 631, the drive motor 6343 is activated to drive the rotating ring 6341 to rotate via the gear set 6344. The rotating ring 6341 drives all sector-shaped auxiliary plates 633 to move outward synchronously via multiple telescopic columns 6342 until the outer wall of the sector-shaped auxiliary plate 633 adheres to the side wall of the adjacent sector-shaped sealing plate 631. This allows for precise control of the sliding of the sector-shaped auxiliary plates 633, enabling flexible adjustment of their positions. When cables of different specifications pass through, the position of the sector-shaped auxiliary plates 633 can be flexibly adjusted via the drive motor 6343 as needed, ensuring the consistency and reliability of the sealing effect.

[0097] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0098] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0099] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A continuous vulcanized rubber cable production line suitable for dual-system production, characterized in that, It includes an upper traction mechanism (1), an extruder (2), a heating section (3), a cooling section (4) and a lower traction mechanism (5) arranged sequentially along the cable traction direction; the heating section (3) and the cooling section (4) are provided with sealing devices (6) at their far ends, and the sealing devices (6) are used to seal the inlet of the heating section (3) and the outlet of the cooling section (4) and allow the cable to pass through; The heating section (3) is connected to a nitrogen valve group (31) and a steam valve group (32) via a pipeline at its inlet. A cooling water circulation system (7) is provided at the cooling section (4) to circulate and cool the cables at the cooling section (4). A nitrogen cooling balance system (8) is provided at the cooling section (4) to control the water level balance and nitrogen balance in the cooling section (4) when nitrogen is introduced into the heating section (3) and the cooling section (4). When steam is introduced into the heating section (3), the nitrogen cooling balance system (8) is in a closed state.

2. The continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 1, characterized in that, The heating section (3) and the cooling section (4) are inclined downward along the cable traction direction; the nitrogen cooling balance system (8) includes a water-cooled jacket (81), a differential pressure tank (82) and a drain valve (83); the water-cooled jacket (81) is located at the inlet of the cooling section (4) for preliminary cooling of nitrogen; the differential pressure tank (82) is located in the upper half of the cooling section (4) for controlling water level balance and nitrogen balance; the drain valve (83) is located on the cooling section (4) for discharging impurities generated by the reaction of nitrogen and cooling water.

3. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 2, characterized in that, The cooling water circulation system (7) includes a circulating water tank (71), a water pump (72), an inlet pipe (73), and a return pipe (74); the water pump (72) is connected between the circulating water tank (71) and the inlet pipe (73), and the inlet pipe (73) is connected to the cooling section (4) near its tail; the return pipe (74) is connected between the cooling section (4) and the circulating water tank (71).

4. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 2, characterized in that, A differential pressure controller (41) is provided between the inlet of the heating section (3) and the outlet of the cooling section (4).

5. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 1, characterized in that, The sealing device (6) includes a sealing sleeve (61), a connecting assembly (62), and a sealing adjustment mechanism (63); the sealing sleeve (61) is coaxially sleeved at the inlet of the heating section (3) or the outlet of the cooling section (4); the connecting assembly (62) is disposed at one end of the sealing sleeve (61) and is used to seal the sealing sleeve (61) to the heating section (3) or the cooling section (4). The sealing adjustment mechanism (63) includes a fan-shaped sealing plate (631) and a first driving assembly (632). The fan-shaped sealing plate (631) has multiple fan-shaped sealing plates that are circumferentially distributed inside the sealing sleeve (61). When the inner circumferential surface of the fan-shaped sealing plate (631) is in contact with the cable, the sides of adjacent fan-shaped sealing plates (631) are in contact with each other to seal the sealing sleeve (61) and the cable. The fan-shaped sealing plate (631) is slidably connected to the sealing sleeve (61) along its own radial direction. The first driving assembly (632) is used to simultaneously drive multiple fan-shaped sealing plates (631) to move closer to or away from the cable.

6. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 5, characterized in that, The sealing device (6) further includes a sector-shaped auxiliary plate (633) and a second drive assembly (634). The sector-shaped auxiliary plate (633) has multiple components and corresponds one-to-one with the sector-shaped sealing plate (631). The sector-shaped auxiliary plate (633) is slidably embedded in the sector-shaped sealing plate (631), and the inner circumferential surface of the sector-shaped auxiliary plate (633) is coplanar with the inner circumferential surface of the sector-shaped sealing plate (631). The sliding direction of the sector-shaped auxiliary plate (633) is coaxial with the axis of the sector-shaped sealing plate (631). The second drive assembly (634) is used to simultaneously drive multiple fan-shaped auxiliary plates (633) to slide in the same direction, so that the side of the fan-shaped auxiliary plate (633) is in contact with the side of the adjacent fan-shaped sealing plate (631).

7. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 6, characterized in that, The sealing device (6) further includes multiple sector-shaped reinforcing plates (635) and multiple sets of linkage components (636), the sector-shaped reinforcing plates (635) and the linkage components (636) corresponding one-to-one with the sector-shaped auxiliary plates (633); the sector-shaped reinforcing plates (635) are slidably embedded in the sector-shaped auxiliary plates (633), and the inner circumferential surfaces of the sector-shaped auxiliary plates (633) and the sector-shaped reinforcing plates (635) are coplanar; The linkage component (636) includes an arc-shaped slider (6361) and a limiting block (6362). An arc-shaped groove (6311) is formed on the inner wall of the sector-shaped sealing plate (631). The arc-shaped slider (6361) is slidably disposed within the arc-shaped groove (6311) and fixed to the sector-shaped reinforcing plate (635). The sliding direction of the arc-shaped slider (6361) is not coaxial with the axis of the sector-shaped sealing plate (631). The chute (6311) gradually approaches the axis of the fan-shaped sealing plate (631) from its beginning to its end; the fan-shaped auxiliary plate (633) has a limiting groove (6331) on the side away from the arc-shaped chute (6311), the limiting block (6362) is slidably disposed in the limiting groove (6331) and fixed with the fan-shaped reinforcing plate (635), and the sliding direction of the limiting block (6362) is consistent with the radial direction of the fan-shaped sealing plate (631).

8. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 7, characterized in that, The inner circumferential surfaces of the sector-shaped sealing plate (631), the sector-shaped auxiliary plate (633), and the sector-shaped reinforcing plate (635) are all provided with an elastic layer (637).

9. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 5, characterized in that, The first drive assembly (632) includes a sliding column (6321), a compression ring (6322), a threaded tube (6323), and a positioning bolt (6324). Multiple sliding columns (6321) are present and correspond one-to-one with the sector-shaped sealing plate (631). One end of each sliding column (6321) is fixed to the outer circumferential surface of the sector-shaped sealing plate (631), and the other end extends through the sealing sleeve (61). The compression ring (6322) is coaxially sleeved on the sealing sleeve (61) and slides axially along the sealing sleeve (61). The threaded tube (6323) is threaded onto the sealing sleeve (61) and rotatably connected to the compression ring (6322). The positioning bolt (6324) is vertically threaded onto the threaded tube (6323) and is used to press against the sealing sleeve (61). The extrusion ring (6322) includes a circular ring section and a flared section. The circular ring section is rotatably connected to the threaded pipe (6323). The inner circumferential surface of the flared section is conical. All the outer ends of the sliding columns (6321) are fixed with T-shaped blocks. The inner circumferential surface of the flared section is provided with multiple T-shaped grooves along its flaring direction. The T-shaped blocks slide in the T-shaped grooves one by one.

10. A continuous vulcanized rubber cable production line suitable for dual-system production as described in claim 6, characterized in that, The second drive assembly (634) includes a rotating ring (6341), a telescopic column (6342), a drive motor (6343), and a gear set (6344); the rotating ring (6341) is coaxially rotatably disposed on the inner circumferential surface of the sealing sleeve (61); there are multiple telescopic columns (6342) corresponding one-to-one with the sector-shaped auxiliary plate (633); one end of the telescopic column (6342) is fixed to the rotating ring (6341), and the other end is fixed to the sector-shaped auxiliary plate (633); the telescopic direction of the telescopic column (6342) is consistent with the radial direction of the sector-shaped sealing plate (631); The drive motor (6343) is located on one side of the sealing sleeve (61), and the gear set (6344) is connected between the output shaft of the drive motor (6343) and the rotating ring (6341). The drive motor (6343) drives the rotating ring (6341) to rotate through the gear set (6344).

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