Corrosion-resistant high-toughness power cable and preparation method thereof

Abstract

The invention belongs to the technical field of cable production, and particularly relates to a corrosion-resistant high-toughness power cable and a preparation method of the corrosion-resistant high-toughness power cable. Glass fibers; ethylene propylene diene monomer; modifying the basic magnesium sulfate whisker; ultrafine diatomite; zirconium dioxide; white carbon black; an inorganic filler; through the synergistic effect of all the raw material components, the high-temperature-resistant plastic has good strength, mechanical toughness, corrosion resistance, aging resistance and high high-temperature resistance, and is green and environment-friendly; the modified magnesium sulfate whisker and the basic magnesium sulfate whisker have excellent toughening and reinforcing effects on a polymer resin matrix and have a good flame-retardant effect; the polypropylene and the ethylene propylene diene monomer are blended, melted and extruded, the ethylene propylene diene monomer can improve the defect of low-temperature brittleness of the polypropylene, and meanwhile, the mechanical impact of the polypropylene can be enhanced; the zirconium dioxide is adopted, and the zirconium dioxide has excellent high-temperature chemical property stability, corrosion resistance and oxidation resistance, so that the corrosion resistance and the high-temperature resistance of the material can be enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of cable production, in particular to a corrosion-resistant high-toughness power cable and a preparation method thereof. Background Art

[0002] With the rapid growth of power cable applications and the rapid development of the economy, people's requirements for the performance of cable materials are constantly increasing, especially in the communications industry and the weak current industry, which have higher requirements for the comprehensive performance of cables. They not only require cable materials to have good insulation properties, but also good corrosion resistance, environmental protection and flame retardancy.

[0003] A Chinese patent with publication number CN105017676A discloses a high thermal conductivity polyvinyl chloride sheath material and cable for graphene-containing cables. The sheath material of the present invention includes the following materials in parts by mass: 100 parts of polyvinyl chloride resin, 0.05-3 parts of thermal conductor, 8-9 parts of auxiliary thermal conductor, 20-25 parts of plasticizer, 0.1-0.5 parts of antioxidant, 2.2-2.9 parts of stabilizer, 0.5-3 parts of lubricant, and 37-53 parts of filler. The cable sheath layer of the present invention is composed of the following materials: polyvinyl chloride resin, thermal conductor, auxiliary thermal conductor, plasticizer, antioxidant, stabilizer, lubricant, filler, flame retardant, and pigment additive. The thermal conductor and auxiliary thermal conductor of the present invention can be used together to significantly improve the thermal conductivity of the sheath layer material.

[0004] In the above technologies, the thermal conductor uses graphene or graphene oxide, both of which are conductive materials. Graphene has excellent electrical conductivity and mechanical properties, but it is difficult to prepare, mainly through chemical vapor deposition or exfoliation, which requires precise control of temperature, pressure, time and other conditions; poor stability: although graphene has high chemical stability, it is easily corroded in certain environments, such as high temperature or strong acids and alkalis; graphene is easily oxidized in the air, resulting in a decrease in its toughness.

[0005] To this end, the present invention provides a corrosion-resistant and high-toughness power cable and a preparation method thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the corrosion-resistant and high-toughness power cable described in the present invention comprises the following raw material components in parts by weight:

[0008] Polypropylene: 55-65 parts;

[0009] Glass fiber: 15-20 parts;

[0010] EPDM rubber: 15-25 parts;

[0011] Modified basic magnesium sulfate whisker: 10-16 parts;

[0012] Ultrafine diatomaceous earth: 8-15 parts;

[0013] Zirconium dioxide: 3-7 parts;

[0014] White carbon black: 2-6 parts;

[0015] Inorganic filler: 2-6 parts;

[0016] Polytetrafluoroethylene: 1-3 parts;

[0017] Neodymium oxide: 1-3 parts;

[0018] Melamine: 2-3 parts;

[0019] Plasticizer: 2-3.5 parts;

[0020] Nano titanium dioxide: 1-3 parts;

[0021] Antioxidant: 1.5-2.5 parts;

[0022] Lubricant: 1.5-2.5 parts;

[0023] Dispersant: 1.5-2.5 parts;

[0024] β-nucleating agent: 0.5-1.5 parts;

[0025] Cross-linking agent: 0.4-0.8 parts.

[0026] A method for preparing a corrosion-resistant and high-toughness power cable, preferably, the preparation method comprises the following steps:

[0027] S1: Preparation of aluminum alloy conductor;

[0028] S101: firstly, the Si-Al-Mg-Fe alloy rod is drawn into an aluminum alloy single wire of a preset size through a drawing machine;

[0029] S102: then twisting the plurality of aluminum alloy single wires into an aluminum alloy twisted body of a preset size;

[0030] S103: finally winding the aluminum alloy stranded body on a take-up drum and performing annealing treatment in an annealing furnace to obtain a high-toughness aluminum alloy conductor;

[0031] S2: preparing cable material, extruding it through a plastic extruder, and coating the aluminum alloy conductor;

[0032] S201: Weigh each component according to the weight proportion of the raw material for preparing the corrosion-resistant cable material;

[0033] S202: Add polypropylene, EPDM rubber, glass fiber, ultrafine diatomaceous earth, basic magnesium phosphate whisker, white carbon, zirconium dioxide, polytetrafluoroethylene, neodymium oxide and nano titanium dioxide into a high-speed mixer, raise the temperature to 70 to 80 degrees Celsius, and mix for 14 to 18 minutes;

[0034] S203: adding the remaining raw materials to the mixture in S2, continuing to mix for 15 to 20 minutes, and allowing to stand for aging for 5 to 7 hours;

[0035] S204: adding the product obtained in S3 into a twin-screw extruder for extrusion granulation, cooling the granules to room temperature, screening out defective products, and obtaining a corrosion-resistant and high-toughness cable material;

[0036] S205: Finally, the cable material is blended and extruded through a plastic extruder to coat the conductor.

[0037] Preferably, the mixer includes a mixing barrel; a first motor is fixedly connected to the top of the mixing barrel, and the output shaft of the first motor is fixedly connected to the mixing barrel through a bearing and is fixedly connected to a rotating rod; a plurality of first stirring paddles are fixedly connected to the outer wall of the rotating rod; a second gear is fixedly connected to the top of the rotating rod; the top inner wall of the mixing barrel is rotatably connected to the first gear through a rotating shaft, and the first gear is meshed with the second gear; a gear ring is rotatably connected to the top inner wall of the mixing barrel through a bearing, and the gear ring is meshed with the first gear; three second stirring paddles are fixedly connected to the bottom of the gear ring, and the second stirring paddles are alternately arranged with the first stirring paddles; the top of the mixing barrel is connected and fixedly connected to a feed hopper; the bottom of the mixing barrel is connected and fixedly connected to a discharge hopper; solenoid valves are respectively installed on the feed hopper and the discharge hopper.

[0038] Preferably, the bottom of the discharge hopper is connected and fixedly connected to a cylinder, and four pillars are fixedly connected to the bottom of the cylinder; a second heating chamber is opened on the side wall of the cylinder; two screw rods are rotatably connected to the cylinder through bearings; one end of the screw rods is fixedly connected to a third gear, and the two third gears are meshed with each other; a second motor is fixedly connected to the inner wall of one end of the cylinder; the output shaft of the second motor is fixedly connected to one end of one of the screw rods.

[0039] Preferably, a heat preservation cavity is provided on the side wall of the mixing cylinder; a first heating cavity is provided on the side wall of the mixing cylinder, and the first heating cavity is arranged inside the heat preservation cavity.

[0040] Preferably, one end of the cylinder away from the second motor is connected to and fixedly connected to a granulation bin; a discharge bin is fixedly connected to the outer side of the granulation bin; an air cooler is installed on the outer wall of the discharge bin, and the air cooler is directly opposite to the granulation bin; the output shaft of the air cooler is fixedly connected to a rotating rod, one end of the rotating rod is fixedly connected to a scraper rod, and the scraper rod is tightly fitted to the outer wall of the granulation bin.

[0041] Preferably, two inclined plates are fixedly connected to the side walls on both sides of the bottom end of the discharge bin, and the inclined plates are staggeredly arranged.

[0042] Preferably, a screening box is slidably connected to the bottom of the discharging bin, and a screening plate and a blanking plate are fixedly connected to the inner wall of the screening box in sequence from top to bottom; a first discharging plate and a second discharging plate are fixedly connected to the outer wall of the screening box in sequence from top to bottom; the first discharging plate cooperates with the screening plate, and the second discharging plate cooperates with the blanking plate; lifting rods are fixedly connected to the four corners of the bottom of the screening box; a base is provided under the screening box; four sleeves are fixedly connected to the top of the base, and the lifting rods are slidably connected in the sleeves respectively.

[0043] Preferably, a cross bar is fixedly connected to the inner wall of the base; springs are respectively sleeved on both ends of the cross bar; second connecting blocks are respectively slidably connected to both ends of the cross bar, and both ends of the spring are respectively fixedly connected to the second connecting block and the base; two first connecting blocks are fixedly connected to the bottom of the screening box, and the first connecting block and the second connecting block on the same side are rotatably connected by a connecting rod through a pin shaft.

[0044] Preferably, two fixed plates are fixedly connected to the top of the base; a driving rod is rotatably connected between the fixed plates via bearings; two cam blocks are symmetrically fixedly connected to the driving rod; a third motor is fixedly connected to one of the fixed plates, and the output shaft of the third motor is fixedly connected to one end of the driving rod.

[0045] The beneficial effects of the present invention are as follows:

[0046] 1. The corrosion-resistant and high-toughness power cable and preparation method described in the present invention have good strength and mechanical toughness, corrosion resistance and aging resistance, strong high temperature resistance, and are green and environmentally friendly through the synergistic effect between the raw material components; by adopting modified magnesium sulfate whiskers, the basic magnesium sulfate whiskers have excellent toughening and reinforcing effects on the polymer resin matrix and have good flame retardant effects; by blending polypropylene and EPDM rubber and melt-extruding them, the EPDM rubber can improve the disadvantage of low-temperature brittleness of polypropylene and enhance the mechanical impact resistance of polypropylene; by adopting zirconium dioxide, zirconium dioxide has excellent high-temperature chemical stability, corrosion resistance, and antioxidant properties, and can enhance the corrosion resistance and high temperature resistance of the material.

[0047] 2. The corrosion-resistant and high-toughness power cable and preparation method described in the present invention, by setting a first gear, a second gear and a gear ring, during the mixing process of the raw materials, since the raw materials have a certain viscosity, stirring in the same direction causes the raw materials to only rotate without mixing and stirring due to inertia, resulting in poor mixing effect; when the first gear, the second gear and the gear ring provided by the present invention are used, by turning on the first motor, the first motor drives the rotating rod and the first stirring paddle to rotate, and the first stirring paddle is used to stir the raw materials clockwise; when the rotating rod rotates, it drives the second gear to rotate, and the first gear is driven to rotate by the second gear, and the gear ring is driven to rotate by the first gear, and the second stirring paddle is driven to rotate counterclockwise by the gear ring, and the raw materials are stirred counterclockwise by the second stirring paddle, and the first stirring paddle and the second stirring paddle cooperate to destroy the viscosity between the raw materials, so that the raw materials are better dispersed, and the effect of rapid and uniform mixing is achieved.

[0048] 3. A corrosion-resistant and high-toughness power cable and a preparation method described in the present invention, by setting a cam block, starting the third motor, driving the driving rod to rotate through the third motor, and driving the cam block to rotate through the driving rod. Since the edge of the cam block is at a different distance from the center of the driving rod, the position of the supporting force at the bottom of the screening box is changed through the cam block, so that the screening box shakes back and forth, and the screen plate filters small particles and drops them on the drop plate, which are then discharged through the second discharge plate, and large particles are discharged through the first discharge plate; when the screening box shakes, the screening box drives the first connecting block to move up and down, and the first connecting block drives the second connecting block to slide on the cross bar through the connecting rod, and during the sliding process, the second connecting block has a buffering and elastic vibration effect on the second connecting block through the spring, thereby improving the shaking effect of the screening box and having a buffering and protective effect on the screening box. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The present invention will be further described below in conjunction with the accompanying drawings.

[0050] Figure 1 is a method flow chart of an embodiment of the present invention;

[0051] Figure 2 is a stereogram of the present invention;

[0052] Figure 3 is a cross-sectional view of the present invention;

[0053] Figure 4 It is a structural schematic diagram of the cross section of the mixing barrel in the present invention;

[0054] Figure 5 2 is a schematic diagram of the structure of the first stirring paddle and the second stirring paddle in the present invention;

[0055] Figure 6 It is a structural schematic diagram of the cross section of the cylinder in the present invention;

[0056] Figure 7 It is a structural schematic diagram of the spiral rod in the present invention;

[0057] Figure 8 It is a structural schematic diagram of the cam block in the present invention;

[0058] Fig. 9 It is a structural schematic diagram of the cross section of the screening box in the present invention;

[0059] In the figure: 1, mixing barrel; 11, feeding hopper; 12, first motor; 121, rotating rod; 122, first stirring paddle; 123, second stirring paddle; 124, gear ring; 125, first gear; 126, second gear; 13, discharging hopper; 14, heat preservation chamber; 15, first heating chamber; 2, barrel; 21, second heating chamber; 22, screw rod; 23, third gear; 24, second motor; 25, pillar; 3, discharging bin; 31, granulation bin; 32. Rotating rod; 33. Scraping rod; 34. Inclined plate; 35. Air cooler; 4. Screening box; 41. Screen plate; 42. First discharging plate; 43. Dropping plate; 44. Second discharging plate; 45. Base; 46. First connecting block; 461. Second connecting block; 462. Connecting rod; 463. Cross bar; 464. Spring; 47. Cam block; 471. Fixed plate; 472. Driving rod; 473. Third motor; 48. Lifting rod; 481. Casing. DETAILED DESCRIPTION

[0060] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0061] Embodiment 1:

[0062] like Figure 1 As shown, a corrosion-resistant and high-toughness power cable according to an embodiment of the present invention comprises the following raw material components in parts by weight:

[0063] Polypropylene: 55 parts;

[0064] Glass fiber: 15 parts;

[0065] EPDM rubber: 15 parts;

[0066] Modified basic magnesium sulfate whisker: 10 parts;

[0067] Ultrafine diatomaceous earth: 8 parts;

[0068] Zirconium dioxide: 3 parts;

[0069] White carbon black: 2 parts;

[0070] Inorganic filler: 2 parts;

[0071] Polytetrafluoroethylene: 1 part;

[0072] Neodymium oxide: 1 part;

[0073] Melamine: 2 parts;

[0074] Plasticizer: 2 parts;

[0075] Nano titanium dioxide: 1 part;

[0076] Antioxidant: 1.5-2.5 parts;

[0077] Lubricant: 1.5 parts;

[0078] Dispersant: 1.5 parts;

[0079] β-nucleating agent: 0.5 parts;

[0080] Cross-linking agent: 0.4 parts.

[0081] A method for preparing a corrosion-resistant and high-toughness power cable, such as Figure 1 As shown, the preparation method comprises the following steps:

[0082] S1: Preparation of aluminum alloy conductor;

[0083] S101: firstly, the Si-Al-Mg-Fe alloy rod is drawn into an aluminum alloy single wire of a preset size through a drawing machine;

[0084] S102: then twisting the plurality of aluminum alloy single wires into an aluminum alloy twisted body of a preset size;

[0085] S103: finally winding the aluminum alloy stranded body on a take-up drum and performing annealing treatment in an annealing furnace to obtain a high-toughness aluminum alloy conductor;

[0086] S2: preparing cable material, extruding it through a plastic extruder, and coating the aluminum alloy conductor;

[0087] S201: Weigh each component according to the weight proportion of the raw material for preparing the corrosion-resistant cable material;

[0088] S202: Add polypropylene, EPDM rubber, glass fiber, ultrafine diatomaceous earth, basic magnesium phosphate whisker, white carbon black, zirconium dioxide, polytetrafluoroethylene, neodymium oxide and nano titanium dioxide into a high-speed mixer, raise the temperature to 70 degrees Celsius, and mix for 14 minutes;

[0089] S203: adding the remaining raw materials to the mixture in S2, continuing mixing for 15 minutes, and allowing to stand for aging for 5 hours;

[0090] S204: adding the product obtained in S3 into a twin-screw extruder for extrusion granulation, cooling the granules to room temperature, screening out defective products, and obtaining a corrosion-resistant and high-toughness cable material;

[0091] S205: Finally, the cable material is blended and extruded through a plastic extruder to coat the conductor.

[0092] Embodiment 2:

[0093] like Figure 1 As shown, a corrosion-resistant and high-toughness power cable according to an embodiment of the present invention comprises the following raw material components in parts by weight:

[0094] Polypropylene: 60 parts;

[0095] Glass fiber: 17 parts;

[0096] EPDM rubber: 20 parts;

[0097] Modified basic magnesium sulfate whisker: 13 parts;

[0098] Ultrafine diatomaceous earth: 12 parts;

[0099] Zirconium dioxide: 5 parts;

[0100] White carbon black: 4 parts;

[0101] Inorganic filler: 4 parts;

[0102] Polytetrafluoroethylene: 2 parts;

[0103] Neodymium oxide: 2 parts;

[0104] Melamine: 2.5 parts;

[0105] Plasticizer: 2.8 parts;

[0106] Nano titanium dioxide: 2 parts;

[0107] Antioxidant: 2 parts;

[0108] Lubricant: 2 parts;

[0109] Dispersant: 2 parts;

[0110] β-nucleating agent: 1 part;

[0111] Cross-linking agent: 0.6 parts.

[0112] A method for preparing a corrosion-resistant and high-toughness power cable, such as Figure 1 As shown, the preparation method comprises the following steps:

[0113] S1: Preparation of aluminum alloy conductor;

[0114] S101: firstly, the Si-Al-Mg-Fe alloy rod is drawn into an aluminum alloy single wire of a preset size through a drawing machine;

[0115] S102: then twisting the plurality of aluminum alloy single wires into an aluminum alloy twisted body of a preset size;

[0116] S103: finally winding the aluminum alloy stranded body on a take-up drum and performing annealing treatment in an annealing furnace to obtain a high-toughness aluminum alloy conductor;

[0117] S2: preparing cable material, extruding it through a plastic extruder, and coating the aluminum alloy conductor;

[0118] S201: Weigh each component according to the weight proportion of the raw material for preparing the corrosion-resistant cable material;

[0119] S202: Add polypropylene, EPDM rubber, glass fiber, ultrafine diatomaceous earth, basic magnesium phosphate whisker, white carbon black, zirconium dioxide, polytetrafluoroethylene, neodymium oxide and nano titanium dioxide into a high-speed mixer, raise the temperature to 77 degrees Celsius, and mix for 16 minutes;

[0120] S203: adding the remaining raw materials to the mixture in S2, continuing mixing for 17 minutes, and allowing to stand for aging for 6 hours;

[0121] S204: adding the product obtained in S3 into a twin-screw extruder for extrusion granulation, cooling the granules to room temperature, screening out defective products, and obtaining a corrosion-resistant and high-toughness cable material;

[0122] S205: Finally, the cable material is blended and extruded through a plastic extruder to coat the conductor.

[0123] Embodiment three:

[0124] like Figure 1 As shown, a corrosion-resistant and high-toughness power cable according to an embodiment of the present invention comprises the following raw material components in parts by weight:

[0125] Polypropylene: 65 parts;

[0126] Glass fiber: 20 parts;

[0127] EPDM rubber: 25 parts;

[0128] Modified basic magnesium sulfate whisker: 16 parts;

[0129] Ultrafine diatomaceous earth: 15 parts;

[0130] Zirconium dioxide: 7 parts;

[0131] White carbon black: 6 parts;

[0132] Inorganic filler: 6 parts;

[0133] Polytetrafluoroethylene: 3 parts;

[0134] Neodymium oxide: 3 parts;

[0135] Melamine: 3 parts;

[0136] Plasticizer: 3.5 parts;

[0137] Nano titanium dioxide: 3 parts;

[0138] Antioxidant: 2.5 parts;

[0139] Lubricant: 2.5 parts;

[0140] Dispersant: 2.5 parts;

[0141] β-nucleating agent: 1.5 parts;

[0142] Cross-linking agent: 0.8 parts.

[0143] A method for preparing a corrosion-resistant and high-toughness power cable, such as Figure 1 As shown, the preparation method comprises the following steps:

[0144] S1: Preparation of aluminum alloy conductor;

[0145] S101: firstly, the Si-Al-Mg-Fe alloy rod is drawn into an aluminum alloy single wire of a preset size through a drawing machine;

[0146] S102: then twisting the plurality of aluminum alloy single wires into an aluminum alloy twisted body of a preset size;

[0147] S103: finally winding the aluminum alloy stranded body on a take-up drum and performing annealing treatment in an annealing furnace to obtain a high-toughness aluminum alloy conductor;

[0148] S2: preparing cable material, extruding it through a plastic extruder, and coating the aluminum alloy conductor;

[0149] S201: Weigh each component according to the weight proportion of the raw material for preparing the corrosion-resistant cable material;

[0150] S202: Add polypropylene, EPDM rubber, glass fiber, ultrafine diatomaceous earth, basic magnesium phosphate whisker, white carbon black, zirconium dioxide, polytetrafluoroethylene, neodymium oxide and nano titanium dioxide into a high-speed mixer, raise the temperature to 80 degrees Celsius, and mix for 18 minutes;

[0151] S203: adding the remaining raw materials to the mixture in S2, continuing mixing for 20 minutes, and allowing to stand for aging for 7 hours;

[0152] S204: adding the product obtained in S3 into a twin-screw extruder for extrusion granulation, cooling the granules to room temperature, screening out defective products, and obtaining a corrosion-resistant and high-toughness cable material;

[0153] S205: Finally, the cable material is blended and extruded through a plastic extruder to coat the conductor.

[0154] When the raw material provided by the invention is used, the raw material has good strength and mechanical toughness, corrosion resistance and aging resistance, strong high temperature resistance and is green and environmentally friendly through the synergistic effect between the raw material components; by adopting the modified magnesium sulfate whisker, the basic magnesium sulfate whisker has excellent toughening and reinforcing effect on the polymer resin base and has good flame retardant effect; by blending polypropylene and ethylene propylene diene monomer rubber and melt-extruded, the ethylene propylene diene monomer rubber can improve the disadvantage of low-temperature brittleness of polypropylene and enhance the mechanical impact resistance of polypropylene; by adopting zirconium dioxide, zirconium dioxide has excellent high-temperature chemical property stability, corrosion resistance and oxidation resistance, and can enhance the corrosion resistance and high temperature resistance of the material.

[0155] like Figures 2 to 5 As shown, the mixer includes a mixing barrel 1; a first motor 12 is fixedly connected to the top of the mixing barrel 1, and the output shaft of the first motor 12 is fixedly connected to the mixing barrel 1 through a bearing and is fixedly connected to a rotating rod 121; a plurality of first stirring paddles 122 are fixedly connected to the outer wall of the rotating rod 121; a second gear 126 is fixedly connected to the top of the rotating rod 121; a first gear 125 is rotatably connected to the inner wall of the top of the mixing barrel 1 through a rotating shaft, and the first gear 125 and the second gear 126 are connected to each other. meshing; a gear ring 124 is rotatably connected to the inner wall of the top end of the mixing barrel 1 through a bearing, and the gear ring 124 meshes with the first gear 125; three second stirring paddles 123 are fixedly connected to the bottom of the gear ring 124, and the second stirring paddles 123 and the first stirring paddles 122 are respectively arranged alternately; the top of the mixing barrel 1 is connected and fixedly connected to the feed hopper 11; the bottom of the mixing barrel 1 is connected and fixedly connected to the discharge hopper 13; solenoid valves are respectively installed on the feed hopper 11 and the discharge hopper 13.

[0156] During the mixing process of the raw materials, since the raw materials have a certain viscosity, stirring in the same direction causes the raw materials to only rotate without mixing and stirring due to inertia, resulting in a poor mixing effect; when the first gear 125, the second gear 126 and the gear ring 124 provided by the present invention are used, by turning on the first motor 12, the first motor 12 drives the rotating rod 121 and the first stirring paddle 122 to rotate, and the first stirring paddle 122 stirs the raw materials clockwise; when the rotating rod 121 rotates, it drives the second gear 126 to rotate, and the first gear 125 drives the first gear 125 to rotate, and the gear ring 124 drives the first gear 125 to rotate, and the second stirring paddle 123 drives the counterclockwise rotation through the gear ring 124, and the raw materials are stirred counterclockwise by the second stirring paddle 123, and the first stirring paddle 122 and the second stirring paddle 123 cooperate to destroy the viscosity between the raw materials, so that the raw materials are better dispersed, and the effect of rapid and uniform mixing is achieved.

[0157] like Figure 3 and Figure 7As shown, the bottom of the discharge hopper 13 is connected and fixedly connected to the cylinder 2, and four pillars 25 are fixedly connected to the bottom of the cylinder 2; a second heating chamber 21 is opened on the side wall of the cylinder 2; two screw rods 22 are rotatably connected to the cylinder 2 through bearings; one end of the screw rods 22 is fixedly connected to a third gear 23, and the two third gears 23 are meshed with each other; a second motor 24 is fixedly connected to the inner wall of one end of the cylinder 2; the output shaft of the second motor 24 is fixedly connected to one end of one of the screw rods 22.

[0158] When the third gear 23 and the spiral rod 22 provided by the present invention are in use, the mixed raw materials enter the barrel 2 through the discharge hopper 13, and the second motor 24 is turned on. The third gear 23 is driven to rotate by the second motor 24, and the other third gear 23 is driven to rotate by the third gear 23. The two third gears 23 rotate synchronously in opposite directions, and the spiral rod 22 is driven to rotate synchronously in opposite directions by the third gear 23. The barrel 2 is heated by the second heating chamber 21, and the raw materials are melted and extruded in the barrel 2, thereby realizing the function of rapid extrusion.

[0159] like Figure 4 As shown, a heat preservation chamber 14 is provided on the side wall of the mixing barrel 1 ; a first heating chamber 15 is provided on the side wall of the mixing barrel 1 , and the first heating chamber 15 is arranged on the inner side of the heat preservation chamber 14 .

[0160] When the heat preservation chamber 14 provided by the present invention is in use, during the mixing process, the mixing barrel 1 needs to be heated by the first heating chamber 15 to heat the raw materials. The heat preservation layer reduces the contact between the first heating chamber 15 and the outside world, thereby reducing heat loss.

[0161] like Figure 3 and Figure 6 As shown, one end of the cylinder 2 away from the second motor 24 is connected and fixedly connected to the granulation bin 31; the outer side of the granulation bin 31 is fixedly connected to the discharge bin 3; the outer side wall of the discharge bin 3 is installed with a cold air fan 35, and the cold air fan 35 is directly opposite to the granulation bin 31; the output shaft of the cold air fan 35 is fixedly connected to a rotating rod 32, one end of the rotating rod 32 is fixedly connected to a scraper rod 33, and the scraper rod 33 is tightly fitted with the outer wall of the granulation bin 31.

[0162] When the granulation bin 31 provided by the present invention is in use, the raw materials are driven by the spiral rod 22 to be transported and extruded in the direction of the granulation bin 31, and the cold air fan 35 is turned on to cool the granulation bin 31 and the discharge bin 3. At the same time, the cold air fan 35 drives the rotating rod 32 to rotate, and the rotating rod 32 drives the scraper rod 33 to rotate. The scraper rod 33 cuts the extruded raw materials into granules, and the granular raw materials are cooled under the action of the cold air fan 35, thereby realizing the function of rapid granulation and cooling.

[0163] like Figure 6As shown, two inclined plates 34 are fixedly connected to the side walls on both sides of the bottom end of the discharge bin 3, and the inclined plates 34 are staggered.

[0164] When the inclined plate 34 provided by the present invention is in use, the granular raw material falls on the inclined plate 34 after being dried by cold air. The inclined plate 34 slows down the falling speed of the granular raw material, prolongs the cooling time of the granular raw material, and makes the granular raw material fully dried.

[0165] like Figures 8 to 9 As shown, the bottom of the discharge bin 3 is slidably connected to a screening box 4, and a screening plate 41 and a blanking plate 43 are fixedly connected to the inner wall of the screening box 4 in sequence from top to bottom; the outer wall of the screening box 4 is fixedly connected to a first discharging plate 42 and a second discharging plate 44 in sequence from top to bottom; the first discharging plate 42 cooperates with the screening plate 41, and the second discharging plate 44 cooperates with the blanking plate 43; lifting rods 48 are fixedly connected to the four corners of the bottom of the screening box 4; a base 45 is provided at the bottom of the screening box 4; four sleeves 481 are fixedly connected to the top of the base 45, and the lifting rods 48 are slidably connected in the sleeves 481 respectively.

[0166] When the screening box 4 and the base 45 provided by the present invention are in use, the granular raw material falls into the screening box 4. Since debris may be generated during granulation, and some particles may be small during the cutting process and need to be screened out, the raw material falls on the screening plate 41. The screening plate 41 filters out the small particles and drops them on the discharge plate 43. Then, the materials are discharged through the second discharge plate 44, and the large particles are discharged through the first discharge plate 42.

[0167] During the screening process, the screening box 4 is driven to shake, and during the shaking process, the screening box 4 drives the lifting rod 48 to slide on the sleeve 481, thereby ensuring the stability of the screening box 4.

[0168] like Figure 8 As shown, a cross bar 463 is fixedly connected to the inner wall of the base 45; springs 464 are respectively sleeved on both ends of the cross bar 463; second connecting blocks 461 are respectively slidably connected to the two ends of the cross bar 463, and the two ends of the spring 464 are respectively fixedly connected to the second connecting block 461 and the base 45; two first connecting blocks 46 are fixedly connected to the bottom of the screening box 4, and a connecting rod 462 is rotatably connected between the first connecting block 46 and the second connecting block 461 on the same side through a pin shaft.

[0169] When the first connecting block 46, the second connecting block 461 and the connecting rod 462 provided by the present invention are in use, when the screening box 4 is shaken, the screening box 4 drives the first connecting block 46 to move up and down, and the first connecting block 46 drives the second connecting block 461 to slide on the cross bar 463 through the connecting rod 462. During the sliding process of the second connecting block 461, the spring 464 plays a role of buffering and elastic vibration of the second connecting block 461, thereby improving the shaking effect of the screening box 4 and providing a buffering and protective effect on the screening box 4.

[0170] like Figure 8 As shown, two fixing plates 471 are fixedly connected to the top of the base 45; a driving rod 472 is rotatably connected between the fixing plates 471 via a bearing; two cam blocks 47 are symmetrically fixedly connected to the driving rod 472; a third motor 473 is fixedly connected to one of the fixing plates 471, and the output shaft of the third motor 473 is fixedly connected to one end of the driving rod 472.

[0171] The cam block 47 provided by the present invention is used to drive the screening box 4 to shake when in use. The third motor 473 is turned on, and the driving rod 472 is driven to rotate by the third motor 473, and the cam block 47 is driven to rotate by the driving rod 472. Since the edge of the cam block 47 is at a different center distance from the driving rod 472, the position of the supporting force at the bottom of the screening box 4 is changed by the cam block 47, thereby adjusting the height of the screening box 4, so that the screening box 4 shakes back and forth.

[0172] Working principle: during the mixing process of the raw materials, since the raw materials have a certain viscosity, stirring in the same direction causes the raw materials to only rotate without mixing and stirring due to inertia, resulting in a poor mixing effect; when the first gear 125, the second gear 126 and the gear ring 124 provided by the present invention are used, by turning on the first motor 12, the first motor 12 drives the rotating rod 121 and the first stirring paddle 122 to rotate, and the first stirring paddle 122 stirs the raw materials clockwise; when the rotating rod 121 rotates, it drives the second gear 126 to rotate, and the first gear 125 drives the gear ring 124 to rotate through the second gear 125, and the second stirring paddle 123 drives the counterclockwise rotation through the gear ring 124, and the raw materials are stirred counterclockwise by the second stirring paddle 123, and the first stirring paddle 122 and the second stirring paddle 123 cooperate to destroy the viscosity between the raw materials, so that the raw materials are better dispersed, and the effect of rapid and uniform mixing is achieved;

[0173] The mixed raw materials enter the barrel 2 through the discharge, the second motor 24 is turned on, the third gear 23 is driven to rotate by the second motor 24, the other third gear 23 is driven to rotate by the third gear 23, the two third gears 23 rotate synchronously in the opposite direction, the third gear 23 drives the spiral rod 22 to rotate synchronously in the opposite direction, the barrel 2 is heated by the second heating chamber 21, the raw materials are melted and extruded in the barrel 2, and the function of rapid extrusion is realized;

[0174] The raw material is driven by the screw rod 22 to be transported and extruded toward the granulation bin 31, and the air cooler 35 is turned on to cool the granulation bin 31 and the discharge bin 3. At the same time, the rotating rod 32 is driven by the air cooler 35 to rotate, and the rotating rod 32 drives the scraper rod 33 to rotate. The extruded raw material is cut into granules by the scraper rod 33, and the granular raw material is cooled under the action of the air cooler 35, thereby realizing the function of rapid granulation cooling;

[0175] The granular raw material falls into the screening box 4, and the third motor 473 is turned on. The driving rod 472 is driven to rotate by the third motor 473, and the cam block 47 is driven to rotate by the driving rod 472. Since the edge of the cam block 47 is at a different distance from the center of the driving rod 472, the position of the supporting force at the bottom of the screening box 4 is changed by the cam block 47, so that the screening box 4 shakes back and forth, and the sieve plate 41 filters out small particles and drops them on the blanking plate 43, and then discharges them through the second discharging plate 44, and large particles are discharged through the first discharging plate 42; when the screening box 4 shakes, the screening box 4 drives the first connecting block 46 to move up and down, and the first connecting block 46 drives the second connecting block 461 to slide on the cross bar 463 through the connecting rod 462. During the sliding process, the second connecting block 461 has a buffering and elastic vibration effect on the second connecting block 461 through the spring 464, thereby improving the shaking effect of the screening box 4 and having a buffering and protective effect on the screening box 4.

[0176] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant and high-toughness power cable, characterized in that: According to weight parts, it includes the following raw material components: Polypropylene: 55-65 parts; Glass fiber: 15-20 parts; EPDM rubber: 15-25 parts; Modified basic magnesium sulfate whisker: 10-16 parts; Ultrafine diatomaceous earth: 8-15 parts; Zirconium dioxide: 3-7 parts; White carbon black: 2-6 parts; Inorganic filler: 2-6 parts; Polytetrafluoroethylene: 1-3 parts; Neodymium oxide: 1-3 parts; Melamine: 2-3 parts; Plasticizer: 2-3.5 parts; Nano titanium dioxide: 1-3 parts; Antioxidant: 1.5-2.5 parts; Lubricant: 1.5-2.5 parts; Dispersant: 1.5-2.5 parts; β-nucleating agent: 0.5-1.5 parts; Cross-linking agent: 0.4-0.8 parts.

2. A method for preparing a corrosion-resistant and high-toughness power cable, which is applicable to the corrosion-resistant and high-toughness power cable according to claim 1, characterized in that: The preparation method comprises the following steps: S1: preparing aluminum alloy conductor; S101: firstly, the Si-Al-Mg-Fe alloy rod is drawn into an aluminum alloy single wire of a preset size through a drawing machine; S102: then twisting the plurality of aluminum alloy single wires into an aluminum alloy twisted body of a preset size; S103: finally winding the aluminum alloy stranded body on a take-up drum and performing annealing treatment in an annealing furnace to obtain a high-toughness aluminum alloy conductor; S2: preparing cable material, extruding it through a plastic extruder, and coating the aluminum alloy conductor; S201: Weigh each component according to the weight proportion of the raw material for preparing the corrosion-resistant cable material; S202: Add polypropylene, EPDM rubber, glass fiber, ultrafine diatomaceous earth, basic magnesium phosphate whisker, white carbon, zirconium dioxide, polytetrafluoroethylene, neodymium oxide and nano titanium dioxide into a high-speed mixer, raise the temperature to 70 to 80 degrees Celsius, and mix for 14 to 18 minutes; S203: adding the remaining raw materials to the mixture in S2, continuing to mix for 15 to 20 minutes, and allowing to stand for aging for 5 to 7 hours; S204: adding the product obtained in S3 into a twin-screw extruder for extrusion granulation, cooling the granules to room temperature, screening out defective products, and obtaining a corrosion-resistant and high-toughness cable material; S205: Finally, the cable material is blended and extruded through a plastic extruder to coat the conductor.

3. The method for preparing a corrosion-resistant and high-toughness power cable according to claim 2, characterized in that: The mixer comprises a mixing barrel (1); a first motor (12) is fixedly connected to the top of the mixing barrel (1); an output shaft of the first motor (12) is fixedly connected to the mixing barrel (1) via a bearing and is fixedly connected to a rotating rod (121); a plurality of first stirring paddles (122) are fixedly connected to the outer wall of the rotating rod (121); a second gear (126) is fixedly connected to the top of the rotating rod (121); a first gear (125) is rotatably connected to the inner wall of the top of the mixing barrel (1) via a rotating shaft, and the first gear (125) is meshed with the second gear (126). ; A gear ring (124) is rotatably connected to the inner wall of the top end of the mixing barrel (1) through a bearing, and the gear ring (124) is meshed with the first gear (125); three second stirring paddles (123) are fixedly connected to the bottom of the gear ring (124), and the second stirring paddles (123) and the first stirring paddles (122) are arranged alternately; the top of the mixing barrel (1) is connected and fixedly connected to a feed hopper (11); the bottom of the mixing barrel (1) is connected and fixedly connected to a discharge hopper (13); solenoid valves are respectively installed on the feed hopper (11) and the discharge hopper (13).

4. The method for preparing a corrosion-resistant and high-toughness power cable according to claim 3, characterized in that: The bottom of the discharge hopper (13) is connected and fixedly connected to a cylinder (2), and four pillars (25) are fixedly connected to the bottom of the cylinder (2); a second heating chamber (21) is provided on the side wall of the cylinder (2); two screw rods (22) are rotatably connected to the cylinder (2) via bearings; one end of each of the screw rods (22) is fixedly connected to a third gear (23), and the two third gears (23) are meshed with each other; a second motor (24) is fixedly connected to the inner wall of one end of the cylinder (2); and an output shaft of the second motor (24) is fixedly connected to one end of one of the screw rods (22).

5. A method for preparing a corrosion-resistant and high-toughness power cable according to claim 4, characterized in that: A heat preservation chamber (14) is provided on the side wall of the mixing barrel (1); a first heating chamber (15) is provided on the side wall of the mixing barrel (1), and the first heating chamber (15) is arranged inside the heat preservation chamber (14).

6. A method for preparing a corrosion-resistant and high-toughness power cable according to claim 5, characterized in that: One end of the cylinder (2) away from the second motor (24) is connected to and fixedly connected with a granulation bin (31); a discharge bin (3) is fixedly connected to the outer side of the granulation bin (31); a cooling fan (35) is installed on the outer side wall of the discharge bin (3), and the cooling fan (35) is directly opposite to the granulation bin (31); an output shaft of the cooling fan (35) is fixedly connected to a rotating rod (32), and one end of the rotating rod (32) is fixedly connected to a scraper rod (33), and the scraper rod (33) is tightly fitted with the outer wall of the granulation bin (31).

7. A method for preparing a corrosion-resistant and high-toughness power cable according to claim 6, characterized in that: Two inclined plates (34) are respectively fixedly connected to the side walls on both sides of the bottom end of the discharge bin (3), and the inclined plates (34) are respectively arranged in a staggered manner.

8. The method for preparing a corrosion-resistant and high-toughness power cable according to claim 7, characterized in that: The bottom of the discharge bin (3) is slidably connected to a screening box (4), and a screening plate (41) and a blanking plate (43) are fixedly connected to the inner wall of the screening box (4) in sequence from top to bottom; a first discharging plate (42) and a second discharging plate (44) are fixedly connected to the outer wall of the screening box (4) in sequence from top to bottom; the first discharging plate (42) cooperates with the screening plate (41), and the second discharging plate (44) cooperates with the blanking plate (43); lifting rods (48) are fixedly connected to the four corners of the bottom of the screening box (4); a base (45) is provided below the screening box (4); four sleeves (481) are fixedly connected to the top of the base (45), and the lifting rods (48) are slidably connected in the sleeves (481) respectively.

9. A method for preparing a corrosion-resistant and high-toughness power cable according to claim 8, characterized in that: A cross bar (463) is fixedly connected to the inner wall of the base (45); springs (464) are respectively sleeved on both ends of the cross bar (463); second connecting blocks (461) are respectively slidably connected to both ends of the cross bar (463); and both ends of the spring (464) are respectively fixedly connected to the second connecting block (461) and the base (45); two first connecting blocks (46) are fixedly connected to the bottom of the screening box (4); and a connecting rod (462) is rotatably connected between the first connecting block (46) and the second connecting block (461) on the same side via a pin shaft.

10. A method for preparing a corrosion-resistant and high-toughness power cable according to claim 9, characterized in that: Two fixing plates (471) are fixedly connected to the top of the base (45); a driving rod (472) is rotatably connected between the fixing plates (471) via a bearing; two cam blocks (47) are symmetrically fixedly connected to the driving rod (472); a third motor (473) is fixedly connected to one of the fixing plates (471); and an output shaft of the third motor (473) is fixedly connected to one end of the driving rod (472).

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