Corrosion-resistant insulated cable and preparation method thereof

Abstract

The invention discloses a corrosion-resistant insulated cable and a preparation method, and relates to the field of cable preparation, and the preparation method comprises the following steps: S1, pouring a plurality of plastic raw materials with a corrosion-resistant characteristic into a material distribution device, injecting the plastic raw materials into stirring equipment in batches through the material distribution device, and mixing to obtain a mixed raw material; s2, adding the mixed raw materials in the S1 into an open mill for mixing, adding a stabilizer into the mixed raw materials, and heating to 150 DEG C for 20 minutes to obtain a combined raw material; s3, processing the combined raw materials in the S2 in a granulator to obtain a granular composition; s4, adding the granular composition in S3 into an extruder, heating to 120 DEG C, extruding the plastic in a molten state, and coating the plastic outside the cable core to form a first insulating layer of the corrosion-resistant cable; through the material distributing device, each raw material can enter the stirring equipment in a tiled state, so that the effect of improving the stirring efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the field of cable preparation, and specifically to a corrosion-resistant insulated cable and a preparation method thereof. Background Art

[0002] ‌‌Power cables are cables used for transmitting and distributing electrical energy. Power cables are commonly used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. It is a cable product used to transmit and distribute high-power electrical energy in the main lines of the power system.

[0003] The structure of power cables mainly includes a wire core, an insulating layer, a protective layer, and a sealing layer. In order to improve the corrosion resistance of power cables, when preparing cables, corrosion-resistant injection molding materials need to be added and stirred and mixed. The existing Chinese patent publication: CN114714535A discloses a preparation method of an anti-corrosion, acid and alkali-resistant silicone rubber wire and cable. By controlling a controller, another electric control telescopic rod drives a baffle to rise, and the injection molding material inside another feeding funnel slides into the mixing box, which can lay different types of injection molding materials in layers in sequence. After arranging different types of injection molding materials evenly, it is convenient for subsequent full and uniform mixing. However, when the electric control telescopic rod drives the baffle to fall, due to the continuous feeding of the feeding funnel, some injection molding materials will still enter the mixing box, making it difficult to accurately control the injection amount of the injection molding materials, and thus unable to ensure the consistency of the ratio of various injection molding materials, reducing the quality of power cables. Summary of the Invention

[0004] The purpose of the present invention is to provide a corrosion-resistant insulated cable and a preparation method thereof, which can make each raw material enter the mixing equipment in a flat state, facilitating the mixing equipment to fully mix the raw materials, improving the mixing efficiency, and adopting a jetting method to improve the feeding efficiency of the raw materials, preventing uneven feeding ratio, and ensuring the production quality of the cable.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A preparation method of a corrosion-resistant insulated cable, comprising the following steps: S1, Pour various plastic raw materials with corrosion-resistant characteristics into the internal part of the material distribution device, and batch-inject the plastic raw materials into the internal part of the mixing equipment through the material distribution device to obtain a mixed raw material; S2, Add the mixed raw material in S1 to an open mill for mixing, add a stabilizer to the mixed raw material, heat it to 150 °C, and the heating time is 20 min to obtain a combined raw material; S3, Process the combined raw material in S2 in a granulator to obtain a granular composition; S4. Add the granular composition in S3 into an extruder, heat it to a temperature of 120 °C, extrude the molten plastic and coat it on the outside of the cable core to form the first insulating layer of the corrosion-resistant cable.

[0006] Preferably, the material distributing device includes an installation cylinder, the bottom of the installation cylinder is fixedly installed on the top of the stirring device, the top of the installation cylinder is fixedly installed with a top cover, and four injection cylinders are fixedly installed on the top of the top cover and are symmetrically distributed around the center for injecting four raw materials with different corrosion-resistant characteristics. A driving motor is fixedly installed on the top of the installation cylinder, and an output end of the driving motor is fixedly installed with a rotating rod extending to the inside of the installation cylinder. A sealing disc is fixedly installed on the outside of the rotating rod, and the top of the sealing disc is in contact with the bottom of the injection cylinder for sealing the opening at the top of the injection cylinder. Four material discharging holes I are symmetrically distributed around the center on the top of the sealing disc. When the material discharging hole I is aligned with the injection cylinder, the injection cylinder can flow downward. The inner diameter of the material discharging hole I is the same as the inner diameter of the bottom of the injection cylinder. Two vertically distributed installation discs are fixedly installed inside the installation cylinder. Four storage cylinders are arranged between the two installation discs and are respectively located directly below the four injection cylinders. The top and the bottom of the storage cylinder are both hollow frustum structures, which are convenient for injecting raw materials and can quickly seal the storage cylinder when the material discharging hole I is away from the opening at the top of the storage cylinder. A material discharging disc is fixedly installed on the outside of the rotating rod and is located below the storage cylinder. A material discharging hole II with the same inner diameter as the material discharging hole I is opened on the top of the material discharging disc. The top and the bottom of the storage cylinder are respectively in contact with the bottom of the sealing disc and the top of the material discharging disc. When the material discharging hole II is aligned with the opening at the bottom of the storage cylinder, the raw materials can be discharged through the material discharging hole I. An air jetting component for quickly feeding materials is further arranged inside the installation cylinder, and a positioning component for installing the storage cylinder is further arranged between the two installation discs.

[0007] Preferably, the jet assembly includes four fixing plates symmetrically fixed to the inner side of the mounting cylinder. A discharge pipe is fixedly installed at the bottom of the second blanking hole for discharging materials. The discharge pipe extends into the interior of the mixing equipment. The bottom of the fixing plate contacts the top of the blanking tray. A mounting seat is fixedly installed at the top of the fixing plate. A high-pressure air pump is fixedly installed at the top of the mounting seat. A nozzle is fixedly installed inside the mounting seat. The size of the nozzle is smaller than that of the second blanking hole. The nozzle is connected to the high-pressure air pump through an air pipe. When the second blanking hole is aligned with the nozzle, high-pressure gas can be injected into the discharge pipe to quickly discharge the raw materials remaining in the discharge pipe. A push bar is fixedly installed at the top of the blanking tray outside the second blanking hole. A sliding groove for limiting the sliding of the push bar is formed at the bottom of the fixing plate. A resisting block is arranged inside the sliding groove. The bottom of the resisting block is of an arc-shaped structure, so that when the push bar contacts the resisting block, the resisting block can be pushed to move. A push rod is fixedly installed at the top of the resisting block. A sleeve extending into the inside of the sliding groove is fixedly installed at the bottom of the mounting seat. A first spring is fixedly installed between the bottom of the sleeve and the top of the resisting block to facilitate the reset of the resisting block. The first spring is located outside the push rod. The push rod slidably extends into the inside of the sleeve to provide a limit for the movement of the resisting block, so that the push bar can push the resisting block to move upward. An opening and closing socket matching with the push rod is formed at the bottom of the mounting seat, so that when the push rod contacts the opening and closing socket, the high-pressure air pump can be opened.

[0008] Preferably, the positioning assembly includes a sleeve fixedly installed between the two mounting discs. The sleeve is slidably sleeved on the outer side of the rotating rod. An annular groove is formed on the outer side of the material storage cylinder. A plurality of U-shaped grooves are formed on the outer side of the mounting disc and are matched with the annular groove, so that the material storage cylinder can be inserted into the U-shaped groove. The top of the mounting disc located at the top of the sleeve is in contact with the top of the annular groove of the material storage cylinder, and the bottom of the mounting disc located at the bottom of the sleeve is in contact with the bottom of the annular groove of the material storage cylinder, so that the two mounting discs position the material storage cylinder. Two symmetrically distributed clamping blocks are arranged on the outer side of the material storage cylinder. The outer side of the clamping block is an arc structure, which is convenient for the material storage cylinder to push the clamping block to move. Sliding rods are fixedly installed at the top and bottom of the clamping block. Long strip grooves for the sliding rods to be limited and slide are formed on the surface of the mounting disc. A sleeve block is fixedly installed at the top of the sliding rod. Support plates are arranged at both ends of the long strip groove. The support plates are fixedly installed on the surface of the mounting disc. A guide rod that slidably penetrates the sleeve block is fixedly installed between the two support plates. A second spring is arranged on the outer side of the guide rod. The two ends of the second spring are fixedly installed between the sleeve block and the support plate. The elastic force of the second spring is used to position the material storage cylinder by the clamping block. Four material taking ports corresponding to the positions of the four material storage cylinders are formed on the outer side of the mounting cylinder. The size of the material taking port is larger than the size of the material storage cylinder, which is convenient for the staff to install or take out the material storage cylinder.

[0009] Preferably, guide rings are fixedly installed at the bottom of the sealing disc and the top of the blanking disc. The outer sides of the guide rings are in contact with the outer side of the material storage cylinder, which improves the smoothness of the rotation of the sealing disc and the blanking disc.

[0010] Preferably, the blanking pipe is in a bent structure, and the bottom end of the blanking pipe is on the same vertical line as the center of the mounting cylinder, which is convenient for injecting the raw material into the middle position of the mixing equipment.

[0011] Preferably, a limit ring is fixedly installed on the outer side of the push rod. The outer side of the limit ring is in contact with the inner side of the sleeve, which improves the smoothness of the movement of the push rod.

[0012] Preferably, a rubber strip is fixedly installed on the inner side of the U-shaped groove on the mounting disc. The rubber strip is in contact with the inner side of the material storage cylinder, which improves the firmness of the installation of the material storage cylinder.

[0013] Preferably, a handle is fixedly installed on one side of the material storage cylinder close to the material taking port of the mounting cylinder, which is convenient for pulling out the material storage cylinder.

[0014] Preferably, the corrosion-resistant cable includes a cable core. A first insulating layer is coated on the outer surface of the cable core. A protective layer is wrapped outside the first insulating layer. A second insulating layer is wrapped outside the protective layer.

[0015] The above embodiments of the present invention can achieve the following beneficial effects: Through the material distribution device, the present invention feeds multiple corrosion-resistant raw materials in batches, enabling each raw material to enter the mixing equipment in a flat state, facilitating the mixing equipment to fully mix the raw materials, improving the mixing efficiency, and adopting the method of jetting air to improve the feeding efficiency of the raw materials, preventing uneven feeding ratio, ensuring the production quality of the cable, and thus achieving the effect of improving the mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the injection cylinder and the top plate structure of the present invention; Figure 3 is a schematic diagram of the rotating rod and the storage cylinder structure of the present invention; Figure 4 is a schematic diagram of the feeding pipe and the sealing plate structure of the present invention; Figure 5 is a schematic diagram of the feeding plate and the pushing bar structure of the present invention; Figure 6 is a schematic diagram of the high-pressure air pump and the nozzle structure of the present invention; Figure 7 is Figure 6 the enlarged structure schematic diagram of area A in Figure 8 is a schematic diagram of the mounting plate and the clamping block structure of the present invention.

[0017] In the figure: 1, mounting cylinder; 2, top cover; 3, injection cylinder; 4, drive motor; 5, rotating rod; 6, sealing plate; 7, first feeding hole; 8, mounting plate; 9, storage cylinder; 10, feeding plate; 11, second feeding hole; 12, fixing plate; 13, feeding pipe; 14, mounting seat; 15, high-pressure air pump; 16, nozzle; 17, pushing bar; 18, abutting block; 19, push rod; 20, sleeve; 21, first spring; 22, opening and closing socket; 23, sleeve pipe; 24, clamping block; 25, sliding rod; 26, sleeve block; 27, support plate; 28, guiding rod; 29, second spring; 30, guiding ring; 31, limiting ring; 32, rubber strip; 33, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Example 1: Please refer to Figures 1-7 , a preparation method of a corrosion-resistant insulated cable shown in the figure, comprising the following steps: S1. Pour a variety of plastic raw materials with corrosion-resistant characteristics into the internal part of the feeding device, and batch-inject the plastic raw materials into the internal part of the stirring device through the feeding device for mixing, so as to obtain a mixed raw material; S2. Add the mixed raw material in S1 into an open mill for mixing, add a stabilizer to the mixed raw material, heat it to 150 °C, and the heating time is 20 min to obtain a combined raw material; S3. Process the combined raw material in S2 in a granulator to obtain a granular composition; S4. Add the granular composition in S3 into an extruder, the heating temperature is 120 °C, extrude the molten plastic and coat it outside the cable core to form the first insulating layer of the corrosion-resistant cable.

[0020] The feeding device includes an installation cylinder 1, the bottom of the installation cylinder 1 is fixedly installed on the top of the stirring device, the top of the installation cylinder 1 is fixedly installed with a top cover 2, the top of the top cover 2 is fixedly installed with four injection cylinders 3 distributed in central symmetry for injecting four different raw materials with corrosion-resistant characteristics, the top of the installation cylinder 1 is fixedly installed with a driving motor 4, the output end of the driving motor 4 is fixedly installed with a rotating rod 5 extending to the inner side of the installation cylinder 1, the driving motor 4 can drive the rotating rod 5 to rotate intermittently, the outer side of the rotating rod 5 is fixedly installed with a sealing disc 6, the top of the sealing disc 6 is in contact with the bottom of the injection cylinder 3 for sealing the opening at the top of the injection cylinder 3, four feeding holes 7 distributed in central symmetry are opened on the top of the sealing disc 6, when the feeding hole 7 is aligned with the injection cylinder 3, the injection cylinder 3 can flow downward, the inner diameter of the feeding hole 7 is the same as the inner diameter of the bottom of the injection cylinder 3, two vertically distributed installation discs 8 are fixedly installed on the inner side of the installation cylinder 1, four storage cylinders 9 are arranged between the two installation discs 8 and are respectively located directly below the four injection cylinders 3, the top and bottom of the storage cylinder 9 are both hollow frustum structures, which are convenient for injecting raw materials and can quickly seal the storage cylinder 9 when the feeding hole 7 is far away from the opening at the top of the storage cylinder 9, a feeding disc 10 is fixedly installed on the outer side of the rotating rod 5 and is located below the storage cylinder 9, a feeding hole 11 with the same inner diameter as the feeding hole 7 is opened on the top of the feeding disc 10, the top and bottom of the storage cylinder 9 are respectively in contact with the bottom of the sealing disc 6 and the top of the feeding disc 10, so that when the feeding hole 11 is aligned with the opening at the bottom of the storage cylinder 9, the raw material can be discharged through the feeding hole 7, a jet component for quickly feeding is also arranged on the inner side of the installation cylinder 1; a positioning component for installing the storage cylinder 9 is also arranged between the two installation discs 8; The staff can inject four different raw materials into four injection barrels 3 respectively. When the drive motor 4 starts, it can drive the rotating rod 5 to rotate by 45 degrees. The rotating rod 5 drives the sealing disc 6 and the blanking disc 10 to rotate synchronously. When the blanking hole 7 on the sealing disc 6 aligns with the top of the injection barrel 3, the raw material in the injection barrel 3 can enter the storage barrel 9 and seal the bottom of the storage barrel 9 through the top of the blanking disc 10, filling the storage barrel 9 with raw material. The drive motor 4 can drive the rotating rod 5 to rotate by 45 degrees again, and the blanking hole 7 can move away from the storage barrel 9 to seal the bottom of the injection barrel 3. And the blanking hole 11 on the blanking disc 10 moves to directly below one of the storage barrels 9, and the raw material in this storage barrel 9 is discharged from the blanking hole 11. Thus, as the rotating rod 5 rotates, the sealing disc 6 can intermittently open and close the top of the storage barrel 9 to timely supplement the raw material. And when the sealing disc 6 seals the top of the storage barrel 9, the blanking holes 11 on the blanking disc 10 can alternately open the bottoms of the four storage barrels 9, so that the raw materials in the four storage barrels 9 can be fed into the mixing equipment in batches, ensuring the input amount of the raw material and guaranteeing the preparation quality of the cable.

[0021] The jetting assembly includes four fixing plates 12 symmetrically fixed and installed inside the installation barrel 1. A blanking pipe 13 is fixedly installed at the bottom of the blanking hole 11 for discharging materials. The blanking pipe 13 extends to the inside of the mixing equipment. The bottom of the fixing plate 12 is in contact with the top of the blanking disc 10. An installation seat 14 is fixedly installed at the top of the fixing plate 12. A high-pressure air pump 15 is fixedly installed at the top of the installation seat 14. A nozzle 16 is fixedly installed inside the installation seat 14. The size of the nozzle 16 is smaller than that of the blanking hole 11. The nozzle 16 is docked with the high-pressure air pump 15 through an air pipe. When the blanking hole 11 aligns with the nozzle 16, high-pressure gas can be injected into the blanking pipe 13 to quickly discharge the residual raw material in the blanking pipe 13. A push bar 17 is fixedly installed on the top of the blanking disc 10 outside the blanking hole 11. A sliding groove for the push bar 17 to be limited and slide is opened at the bottom of the fixing plate 12. A resisting block 18 is arranged inside the sliding groove. The bottom of the resisting block 18 is of an arc-shaped structure, so that when the push bar 17 contacts the resisting block 18, it can push the resisting block 18 to move. A push rod 19 is fixedly installed at the top of the resisting block 18. A sleeve 20 extending to the inside of the sliding groove is fixedly installed at the bottom of the installation seat 14. A first spring 21 is fixedly installed between the bottom of the sleeve 20 and the top of the resisting block 18 to facilitate the reset of the resisting block 18. The first spring 21 is located outside the push rod 19. The push rod 19 slides and extends to the inside of the sleeve 20 to provide a limit for the movement of the resisting block 18, so that the push bar 17 can push the resisting block 18 to move upward. An opening and closing socket 22 matched with the push rod 19 is opened at the bottom of the installation seat 14, so that when the push rod 19 contacts the opening and closing socket 22, the high-pressure air pump 15 can be opened; When the blanking tray 10 rotates, it can drive the push bar 17 to insert into the chute at the bottom of the fixed plate 12, and the nozzle 16 on the fixed plate 12 is aligned with the top of the second blanking hole 11, so that the push bar 17 pushes the abutting block 18 to move upward, and the abutting block 18 drives the push rod 19 to move upward along the inner side of the sleeve 20, so that the push rod 19 inserts into the opening and closing socket 22 at the bottom of the mounting seat 14, and the high-pressure air pump 15 is opened through the opening and closing socket 22. The high-pressure air pump 15 can inject air flow into the second blanking hole 11 through the nozzle 16, and the residual raw materials in the second blanking hole 11 are sent into the mixing equipment through the air flow, improving the accuracy of raw material input.

[0022] The corrosion-resistant cable includes a cable core, the outer surface of the cable core is coated with a first insulating layer, the first insulating layer is wrapped with a protective layer, and the outside of the protective layer is wrapped with a second insulating layer.

[0023] Working principle: First, the staff connect the pipes for conveying four different raw materials to the tops of four feeding cylinders 3 respectively, so that the pipes for conveying raw materials inject the raw materials into the four feeding cylinders 3. Then, the staff start the driving motor 4, and the driving motor 4 drives the rotating rod 5 to rotate by 45 degrees. The rotating rod 5 drives the sealing disc 6 and the blanking disc 10 to rotate synchronously. The first blanking hole 7 on the sealing disc 6 aligns with the top of the feeding cylinder 3, and the raw materials in the feeding cylinder 3 are injected into the storage cylinder 9 through the first blanking hole 7. At the same time, the top of the blanking disc 10 seals the bottom of the storage cylinder 9, so that the storage cylinder 9 is filled with raw materials. Then, the driving motor 4 drives the rotating rod 5 to rotate by 45 degrees again, and the first blanking hole 7 on the sealing disc 6 moves away from the top of the storage cylinder 9, so that the top of the sealing disc 6 seals the bottom of the feeding cylinder 3. At the same time, the second blanking hole 11 on the blanking disc 10 moves to directly below one of the storage cylinders 9, and the raw materials in this storage cylinder 9 are discharged into the blanking pipe 13 through the second blanking hole 11 and enter the mixing equipment through the blanking pipe 13. Then, the driving motor 4 drives the rotating rod 5 to rotate by 45 degrees again, the feeding cylinder 3 aligns with the first blanking hole 7, and the feeding cylinder 3 replenishes the empty storage cylinder 9 with raw materials. At the same time, the blanking disc 10 drives the second blanking hole 11 away from the storage cylinder 9 and drives the pushing bar 17 to insert into the chute at the bottom of the fixing plate 12. The nozzle 16 on the fixing plate 12 aligns with the top of the second blanking hole 11. The pushing bar 17 moves along the arc surface at the bottom of the abutting block 18, so that the abutting block 18 drives the push rod 19 to move upward along the inner side of the sleeve 20. The push rod 19 inserts into the opening and closing socket 22 at the bottom of the mounting seat 14, and the opening and closing socket 22 opens the high-pressure air pump 15. The high-pressure air pump 15 can inject air flow into the inner side of the second blanking hole 11 through the nozzle 16, and send the raw materials remaining in the second blanking hole 11 into the mixing equipment. Thus, as the rotating rod 5 rotates, the sealing disc 6 intermittently opens and closes the top of the storage cylinder 9, and timely replenishes the raw materials in the storage cylinder 9. When the sealing disc 6 seals the top of the storage cylinder 9, the second blanking holes 11 on the blanking disc 10 can take turns to open the bottoms of the four storage cylinders 9, so that the raw materials in the four storage cylinders 9 are fed into the mixing equipment in batches, thereby achieving the effect of improving the mixing efficiency, ensuring that the input ratio of the raw materials is consistent with the preset ratio, and improving the preparation quality of the cable.

[0024] Embodiment 2: Please refer to Figure 2 and Figure 8, this embodiment further explains the first embodiment. The positioning assembly shown in the figure includes a sleeve 23 fixedly installed between the two mounting plates 8. The sleeve 23 is slidably sleeved on the outer side of the rotating rod 5. An annular groove is provided on the outer side of the storage barrel 9. A plurality of U-shaped grooves matching the annular groove are provided on the outer side of the mounting plate 8, so that the storage barrel 9 can be inserted into the U-shaped groove. The top of the mounting plate 8 located at the top of the sleeve 23 contacts the top of the annular groove of the storage barrel 9, and the bottom of the mounting plate 8 located at the bottom of the sleeve 23 contacts the bottom of the annular groove of the storage barrel 9, so that the two mounting plates 8 position the storage barrel 9. Two symmetrically distributed clamping blocks 24 are arranged on the outer side of the storage barrel 9. The outer side of the clamping block 24 is an arc-shaped structure, which is convenient for the storage barrel 9 to push the clamping block 24 to move. A slide bar 25 is fixedly installed on the top and bottom of 24, and a long groove is provided on the surface of the mounting plate 8 for the slide bar 25 to limit the sliding movement. A sleeve block 26 is fixedly installed on the top of the slide bar 25, and support plates 27 are provided at both ends of the long groove. The support plate 27 is fixedly installed on the surface of the mounting plate 8, and a guide rod 28 that slides through the sleeve block 26 is fixedly installed between the two support plates 27. A spring 29 is provided on the outside of the guide rod 28, and both ends of the spring 29 are fixedly installed between the sleeve block 26 and the support plate 27. The elastic force of the spring 29 is used to position the clamping block 24 to position the storage barrel 9. Four material taking ports corresponding to the positions of the four storage barrels 9 are provided on the outside of the mounting barrel 1. The size of the material taking port is larger than that of the storage barrel 9, which is convenient for the staff to install or take out the storage barrel 9.

[0025] In this embodiment: the staff can insert the material storage barrel 9 into the U-shaped grooves of the two mounting plates 8 through the material taking port on the outside of the mounting barrel 1, so that the two mounting plates 8 respectively rest against the top and bottom of the annular groove of the material storage barrel 9, and when the material storage barrel 9 moves along the inner side of the U-shaped groove, the clamping block 24 can be pushed to move, and the clamping block 24 drives the two sliding bars 25 to move, and the two sliding bars 25 drive the sleeve block 26 to move along the outer side of the guide rod 28 to compress the spring 29. When the material storage barrel 9 contacts the arc surface of the U-shaped groove, the two clamping blocks 24 clamp and position the outer side of the material storage barrel 9 by utilizing the rebound force of the spring 29, so that the material storage barrel 9 can be quickly installed, and it is convenient for later disassembly and replacement, thereby improving the convenience of installation and disassembly and maintenance of the material storage barrel 9.

[0026] Example 3: Please refer to Figure 4 , Figure 7 and Figure 8, this embodiment further illustrates other embodiments. Guide rings 30 are fixedly installed at the bottom of the sealing disk 6 and the top of the blanking disk 10 in the illustration. The outer sides of the guide rings 30 are in contact with the outer side of the material storage cylinder 9, improving the smoothness of the rotation of the sealing disk 6 and the blanking disk 10. The blanking pipe 13 is in a bent structure, and the bottom end of the blanking pipe 13 is on the same vertical line as the center of the installation cylinder 1, facilitating the injection of raw materials into the middle position of the mixing equipment. A limit ring 31 is fixedly installed on the outer side of the push rod 19, and the outer side of the limit ring 31 is in contact with the inner side of the sleeve 20, improving the smoothness of the movement of the push rod 19. A rubber strip 32 is fixedly installed on the inner side of the U-shaped groove on the installation disk 8, and the rubber strip 32 is in contact with the inner side of the material storage cylinder 9, improving the firmness of the installation of the material storage cylinder 9. A handle 33 is fixedly installed on one side of the material storage cylinder 9 close to the material taking port of the installation cylinder 1, facilitating the pulling out of the material storage cylinder 9.

[0027] In this embodiment: When the sealing disk 6 and the blanking disk 10 rotate, they can drive the guide rings 30 to move along the outer side of the material storage cylinder 9, improving the smoothness of the movement of the sealing disk 6 and the blanking disk 10. The bent blanking pipe 13 can convey raw materials to the middle position of the mixing equipment, facilitating the spreading of the raw materials from the middle of the mixing equipment for easy mixing. When the push rod 19 moves, it can drive the limit ring 31 to move along the inner side of the sleeve 20, improving the smoothness of the movement of the push rod 19 and ensuring that the push rod 19 can be smoothly inserted into the opening and closing socket 22. The rubber strip 32 on the inner side of the U-shaped groove can increase the friction with the material storage cylinder 9, improving the firmness of the installation of the material storage cylinder 9, and the staff can take out the material storage cylinder 9 from the U-shaped groove of the installation disk 8 through the handle 33.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a corrosion-resistant insulated cable, characterized in that, It includes the following steps: S1. Pour a variety of corrosion-resistant plastic raw materials into the internal part of the material distribution device, and batch-inject the plastic raw materials into the internal part of the stirring device through the material distribution device for mixing, so as to obtain a mixed raw material; S2. Add the mixed raw material in S1 into an open mill for mixing, add a stabilizer to the mixed raw material, heat it to 150 °C, and the heating time is 20 min to obtain a combined raw material; S3. Process the combined raw material in S2 in a granulator to obtain a granular composition; S4. Add the granular composition in S3 into an extruder, the heating temperature is 120 °C, extrude the molten plastic and coat it on the outside of the cable core to form a first insulating layer of the corrosion-resistant cable.

2. The preparation method of a corrosion-resistant insulated cable according to claim 1, characterized in that: The material distribution device includes an installation cylinder (1), the bottom of the installation cylinder (1) is fixedly installed on the top of the stirring device, the top of the installation cylinder (1) is fixedly installed with a top cover (2), the top of the top cover (2) is fixedly installed with four injection cylinders (3) distributed in central symmetry, the top of the installation cylinder (1) is fixedly installed with a driving motor (4), the output end of the driving motor (4) is fixedly installed with a rotating rod (5) extending to the inner side of the installation cylinder (1), the outer side of the rotating rod (5) is fixedly installed with a sealing disc (6), the top of the sealing disc (6) is in contact with the bottom of the injection cylinder (3), the top of the sealing disc (6) is provided with four material discharge holes one (7) distributed in central symmetry, the inner diameter of the material discharge hole one (7) is the same as the inner diameter of the bottom of the injection cylinder (3), the inner side of the installation cylinder (1) is fixedly installed with two vertically distributed installation discs (8), between the two installation discs (8) there are four storage cylinders (9) respectively located directly below the four injection cylinders (3), the top and bottom of the storage cylinder (9) are both hollow frustum structures, the outer side of the rotating rod (5) is fixedly installed with a material discharge disc (10) located below the storage cylinder (9), the top of the material discharge disc (10) is provided with a material discharge hole two (11) with the same inner diameter as the material discharge hole one (7), the top and bottom of the storage cylinder (9) are respectively in contact with the bottom of the sealing disc (6) and the top of the material discharge disc (10), the inner side of the installation cylinder (1) is also provided with a jet component for rapid feeding, and between the two installation discs (8) there is also provided a positioning component for installing the storage cylinder (9).

3. The preparation method of a corrosion-resistant insulating cable according to claim 2, characterized in that: The jet component includes four fixing plates (12) which are fixedly installed symmetrically about the center inside the installation cylinder (1). A blanking pipe (13) is fixedly installed at the bottom of the second blanking hole (11). The blanking pipe (13) extends into the interior of the stirring device. The bottom of the fixing plate (12) is in contact with the top of the blanking tray (10). An installation seat (14) is fixedly installed at the top of the fixing plate (12). A high-pressure air pump (15) is fixedly installed at the top of the installation seat (14). A nozzle (16) is fixedly installed inside the installation seat (14). The size of the nozzle (16) is smaller than the size of the second blanking hole (11). The nozzle (16) is docked with the high-pressure air pump (15) through an air pipe. A push bar (17) is fixedly installed at the top of the blanking tray (10) outside the second blanking hole (11). A sliding groove for the push bar (17) to be limited and slide is formed at the bottom of the fixing plate (12). A resisting block (18) is arranged inside the sliding groove. The bottom of the resisting block (18) is of an arc-shaped structure. A push rod (19) is fixedly installed at the top of the resisting block (18). A sleeve (20) extending into the inside of the sliding groove is fixedly installed at the bottom of the installation seat (14). A first spring (21) is fixedly installed between the bottom of the sleeve (20) and the top of the resisting block (18). The first spring (21) is located outside the push rod (19). The push rod (19) slidably extends into the inside of the sleeve (20). An opening and closing socket (22) matched with the push rod (19) is formed at the bottom of the installation seat (14).

4. The preparation method of a corrosion-resistant insulating cable according to claim 2, characterized in that: The positioning component includes a sleeve (23) fixedly installed between the two mounting discs (8). The sleeve (23) is slidably sleeved on the outer side of the rotating rod (5). An annular groove is formed on the outer side of the material storage cylinder (9). A plurality of U-shaped grooves matching the annular groove are formed on the outer side of the mounting disc (8). The top of the mounting disc (8) at the top of the sleeve (23) is in contact with the top of the annular groove of the material storage cylinder (9), and the bottom of the mounting disc (8) at the bottom of the sleeve (23) is in contact with the bottom of the annular groove of the material storage cylinder (9). Two symmetrically distributed clamping blocks (24) are arranged on the outer side of the material storage cylinder (9). The outer side of the clamping block (24) is of an arc structure. Slide rods (25) are fixedly installed at the top and bottom of the clamping block (24). Long strip grooves for the slide rods (25) to slide and be limited are formed on the surface of the mounting disc (8). A sleeve block (26) is fixedly installed at the top of the slide rod (25). Support plates (27) are arranged at both ends of the long strip groove. The support plates (27) are fixedly installed on the surface of the mounting disc (8). A guide rod (28) slidably penetrating through the sleeve block (26) is fixedly installed between the two support plates (27). A second spring (29) is arranged on the outer side of the guide rod (28). The two ends of the second spring (29) are fixedly installed between the sleeve block (26) and the support plate (27). Four material taking openings corresponding to the positions of the four material storage cylinders (9) are formed on the outer side of the mounting cylinder (1). The size of the material taking opening is larger than that of the material storage cylinder (9).

5. The preparation method of a corrosion-resistant insulated cable according to claim 2, wherein: Guide rings (30) are fixedly installed at the bottom of the sealing disc (6) and the top of the blanking disc (10). The outer sides of the guide rings (30) are in contact with the outer sides of the material storage cylinders (9).

6. The preparation method of a corrosion-resistant insulating cable according to claim 3, characterized in that: The blanking pipe (13) is of a bent structure. The bottom end of the blanking pipe (13) is on the same vertical line as the center of the mounting cylinder (1).

7. The preparation method of a corrosion-resistant insulating cable according to claim 3, characterized in that: A limit ring (31) is fixedly installed on the outer side of the push rod (19). The outer side of the limit ring (31) is in contact with the inner side of the sleeve (20).

8. The preparation method of a corrosion-resistant insulating cable according to claim 4, characterized in that: A rubber strip (32) is fixedly installed on the inner side of the U-shaped groove on the mounting disc (8). The rubber strip (32) is in contact with the inner side of the material storage cylinder (9).

9. The preparation method of a corrosion-resistant insulating cable according to claim 4, characterized in that: A handle (33) is fixedly installed on one side of the material storage cylinder (9) close to the material taking opening of the mounting cylinder (1).

10. The corrosion-resistant cable obtained by the method for preparing a corrosion-resistant insulated cable according to any one of claims 2-9, characterized in that: The corrosion-resistant cable includes a cable core. A first insulating layer is coated on the outer surface of the cable core. A protective layer is wrapped outside the first insulating layer. A second insulating layer is wrapped outside the protective layer.

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