Inorganic mineral insulated high-temperature-resistant cable filling device and method

Abstract

The invention relates to the technical field of cable manufacturing, and provides an inorganic mineral insulation high-temperature-resistant cable filling device and method.The inorganic mineral insulation high-temperature-resistant cable filling device comprises a back plate, a discharging hopper is installed on the surface of the back plate, a discharging mechanism is arranged on one side of the discharging hopper, and a belt guiding assembly, a belt guiding frame and a belt winding mechanism are arranged below the discharging hopper; and a welding mechanism is arranged on one side of the tape winding mechanism, the bottom end of the discharging hopper is connected with a filling outer cylinder, and a supporting table is fixed to the top of the discharging hopper. Through the arrangement of the driving mechanism, the grinding discharging rod, the outer grinding cylinder and other structures, magnesium oxide powder can be subjected to secondary grinding while discharging and filling are conducted, so that the granularity is more uniform and fine, filling is more compact, meanwhile, through the arrangement of the rotary heating assembly, electromagnetic heating can be achieved during rotation, and the electromagnetic heating effect is improved. And heat can be conducted to the interior of the outer grinding cylinder, and powder can be heated to be more dry while grinding and discharging are conducted.

Description

Technical Field

[0001] The invention relates to the technical field of cable manufacturing, in particular to an inorganic mineral insulated high temperature resistant cable filling device and method. Background Art

[0002] Fireproof cables are mainly divided into rigid and flexible types. Rigid mineral insulated cables have the best fireproof performance. They are not only difficult to be damaged after a fire, but can even maintain transmission performance in a fire. Inorganic mineral insulated cables are cables that use a copper sheath to wrap the copper conductor core wire and use magnesium oxide powder as inorganic insulating material to isolate the conductor and sheath.

[0003] The patent with the publication number CN114038629B proposes a production equipment for continuously producing rigid mineral cables, which includes an overhead frame, which is provided with an upper guide frame for introducing conductor cores, a barrel for holding insulating mineral materials, a belt guide mechanism for introducing metal belts, a belt winding mechanism for keeping the metal belts conveyed downward and gradually bending the metal belts around the conductors into metal tubes, a welding mechanism for welding the gaps of the metal belts bent into metal tubes, and a shaping mechanism for gradually reducing the outer diameter of the metal tubes. A mold is fixed at the bottom of the barrel, which can realize continuous filling and welding production of cables. However, this equipment has the following disadvantages during filling: 1. There is no specific ratio requirement for the magnesium oxide powder used as the filling insulation material, which results in uneven distribution of the existing magnesium oxide powder and insufficient density. After being filled into the copper tube, gaps and empty packages are likely to appear, which leads to low insulation resistance or short circuit problems. 2. The metal strip is not cleaned by dust removal equipment before welding. The impurity particles attached to the surface of the metal strip may cause welding leakage, shaking, dripping and other undesirable conditions during welding.

[0004] Therefore, an inorganic mineral insulated high temperature resistant cable filling device and method are proposed. Summary of the invention

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an inorganic mineral insulated high temperature resistant cable filling device, comprising a back plate, a feeding hopper is installed on the surface of the back plate, a feeding mechanism is arranged on one side of the feeding hopper, a guide belt assembly, a guide belt frame and a winding belt mechanism are arranged below the feeding hopper, a welding mechanism is arranged on one side of the winding belt mechanism, a filling outer cylinder is connected to the bottom end of the feeding hopper, a support platform is fixed on the top of the feeding hopper, a support plate fixed to the back plate is arranged above the support platform, a fixing sleeve is arranged on the surface of the supporting plate, a filling inner cylinder is arranged inside the filling outer cylinder, the top of the filling inner cylinder is fixed to the bottom of the fixing sleeve, a filling channel is formed between the filling inner cylinder and the filling outer cylinder, and a conductor thickness pressure sensing mechanism is arranged inside the filling inner cylinder for detecting and locating the conductor wire core entering the filling inner cylinder; The interior of the material hopper is provided with a partition plate to divide the material hopper into a receiving cavity and a cavity, the interior of the cavity is fixed with an outer grinding cylinder, the interior of the outer grinding cylinder is provided with a grinding material rod, the grinding material rod is sleeved on the outside of the filling inner cylinder, the top end of the grinding material rod is rotatably connected to the support platform, the surface of the support platform is fixed with a protective box, the interior of the protective box is provided with a driving mechanism for driving the grinding material rod to rotate; A rotating heating assembly is provided between the grinding feed rod and the support platform, for heating and drying the powder ground in the outer grinding cylinder; Two electrostatic dust removal rollers are arranged on one side of the guide belt assembly, and the electrostatic dust removal rollers are connected to a driving mechanism to realize rotation. A dust suction assembly is arranged on one side of the surface of the electrostatic dust removal roller, and the dust suction assembly is used to suck away dust on the surface of the electrostatic dust removal roller when it rotates.

[0006] Preferably, the grinding and feeding rod includes a rotating cylinder, the outer surface of which is connected to a spiral pushing part, a plurality of second grinding teeth are arranged at the lower end of the spiral pushing part, a plurality of first grinding teeth matching the second grinding teeth are arranged inside the outer grinding cylinder, the rotating cylinder is sleeved on the outer surface of the filling inner cylinder, and a spiral feeding plate is arranged on the outer surface of the bottom end of the rotating cylinder.

[0007] Preferably, the driving mechanism comprises a dual-axis motor fixed on the upper surface of the support platform, one driving end of the dual-axis motor is rotatably connected to the top end of the rotating cylinder through a bevel gear assembly, and the other driving end is connected to a rotating rod through a reversing reducer.

[0008] Preferably, a protective cover is provided on one side of the two electrostatic dust removal rollers, and two meshing gears are provided inside the protective cover. The two gears are respectively fixed to one end of the electrostatic dust removal roller, and one end of one of the electrostatic dust removal rollers is connected to the rotating rod through a worm gear assembly.

[0009] Preferably, the dust collection assembly includes two dust collection heads arranged on one side of the electrostatic dust removal roller, the surface of the dust collection head is provided with a rubber scraper, the rubber scraper is in contact with the electrostatic dust removal roller, the two dust collection heads are connected to an exhaust fan through a pipe, and the exhaust fan is fixed on the back of the back plate.

[0010] Preferably, the belt guide assembly includes two side plates fixed to the surface of the back plate, a belt guide roller is arranged between the two side plates, the electrostatic dust removal roller is installed on the surface of the side plates, and an opening is provided on the back plate near the belt guide roller to facilitate the entry of the metal belt.

[0011] Preferably, the conductor thickness pressure sensing mechanism includes a fixed plate fixed inside a fixed sleeve, the fixed plate is slidably connected with a spring rod, a pressure sensor is installed on the inner wall of the fixed sleeve, a guide wheel is fixed to one end of the spring rod, and the other end is in contact with the pressure sensor.

[0012] Preferably, the rotating heating assembly includes a turntable fixed on the outer surface of the grinding blanking rod, a magnet is installed on the surface of the turntable, a heat-conducting copper coil is arranged above the magnet, the heat-conducting copper coil is fixed on the lower surface of the support platform, and a spiral heat-conducting copper tube is embedded in the interior of the outer grinding cylinder, and the spiral heat-conducting copper tube is connected to the heat-conducting copper coil through a metal copper tube body.

[0013] The inorganic mineral insulated high temperature resistant cable filling method comprises the following steps: S1. The magnesium oxide powder is transported into the feed hopper. The dual-axis motor drives the grinding feed rod to rotate. During the rotation, the magnesium oxide powder enters between the grinding feed rod and the outer grinding cylinder for grinding. After grinding, the magnesium oxide powder with uniform coarseness and fineness will enter the filling channel as the grinding feed rod rotates. S2. The conductor core enters the inner filling tube from the fixed sleeve, and the pressure feedback from the pressure sensor in the conductor thickness pressure sensing mechanism is used to adjust the speed of the dual-axis motor, thereby adjusting the speed of magnesium oxide powder grinding and feeding; S3, the metal belt is sent out by the external unwinding roller, enters from the opening and passes between the two electrostatic dust removal rollers, so that the electrostatic dust removal rollers can absorb dust impurities on the surface of the metal belt. When the dual-axis motor rotates, it can drive the two electrostatic dust removal rollers to rotate in conjunction, so that the rubber scraper scrapes off the dust on the surface of the electrostatic dust removal roller and takes it away through the dust suction head; S4. The metal tape is formed into a metal tube under the action of the tape guide assembly and the tape winding mechanism, and is welded by a welding mechanism. The magnesium oxide powder discharged will directly enter the gap between the metal tube and the conductor core to complete the filling.

[0014] The present invention provides an inorganic mineral insulated high temperature resistant cable filling device and method. It has the following beneficial effects: 1. The present invention can perform secondary grinding of magnesium oxide powder while feeding and filling through the arrangement of a driving mechanism, a grinding and feeding rod, an outer grinding cylinder and other structures, so that the particle size is more uniform and fine, so that the filling is more compact. At the same time, with the arrangement of a rotating heating component, electromagnetic heating can be achieved during rotation, and the heat can be conducted to the inside of the outer grinding cylinder, so that the powder can be heated during grinding and feeding to make it drier.

[0015] 2. The present invention can adsorb dust and impurities on the surface of the metal belt through the arrangement of the electrostatic dust removal roller, thereby improving the welding effect. The electrostatic dust removal roller is driven to rotate through linkage. When the electrostatic dust removal roller rotates, the rubber scraper and the dust suction head can clean the surface of the electrostatic dust removal roller, thus killing two birds with one stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the filling device of the inorganic mineral insulated high temperature resistant cable of the present invention; Figure 2 It is a partial cross-sectional view of the inorganic mineral insulated high temperature resistant cable filling device of the present invention; Figure 3 A second perspective stereoscopic view of the inorganic mineral insulated high temperature resistant cable filling device of the present invention; Figure 4 It is an overall structural diagram of the conductor thickness pressure sensing mechanism in the inorganic mineral insulated high temperature resistant cable filling device of the present invention; Figure 5 It is an enlarged view of the A position in the filling device of the inorganic mineral insulated high temperature resistant cable of the present invention; Figure 6 It is an enlarged view of the B position in the filling device of the inorganic mineral insulated high temperature resistant cable of the present invention; Figure 7 It is a partial schematic diagram of the electrostatic dust removal roller and dust collection assembly in the inorganic mineral insulated high temperature resistant cable filling device of the present invention.

[0017] Among them, 1. back plate; 2. discharge hopper; 201. receiving cavity; 202. separation plate; 203. cavity; 204. outer grinding cylinder; 205. first grinding tooth; 206. grinding discharge rod; 2061. spiral pusher; 2062. second grinding tooth; 2063. rotating cylinder; 2064. spiral discharge plate; 3. electrostatic dust removal roller; 4. belt winding mechanism; 5. protective box; 501. dual-axis motor; 502. reversing reducer; 503. bevel gear assembly; 6. conductor core; 7. support plate; 8. protective cover ;81, gear;82, worm gear assembly;9, fixed sleeve;10, conductor thickness pressure sensing mechanism;1001, guide wheel;1002, fixed plate;1003, spring rod;1004, pressure sensor;11, filling inner cylinder;12, filling outer cylinder;13, unloading mechanism;14, belt guide roller;15, dust collector;16, exhaust fan;17, rotating rod;18, belt guide frame;19, opening;20, support table;21, turntable;22, magnet;23, thermal conductive copper coil;24, spiral thermal conductive copper tube; 25. Welding mechanism. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1

[0020] like Figure 1-Figure 7As shown, the inorganic mineral insulated high temperature resistant cable filling device comprises a back plate 1, a lower hopper 2 is installed on the surface of the back plate 1, a lowering mechanism 13 is arranged on one side of the lower hopper 2, a guide belt assembly, a guide belt frame 18 and a tape winding mechanism 4 are arranged below the lower hopper 2, a welding mechanism 25 is arranged on one side of the tape winding mechanism 4, a filling outer cylinder 12 is connected to the bottom end of the lower hopper 2, a support platform 20 is fixed on the top of the lower hopper 2, a support plate 7 fixed to the back plate 1 is arranged above the support platform 20, a fixing sleeve 9 is arranged on the surface of the support plate 7, a filling inner cylinder 11 is arranged inside the filling outer cylinder 12, the top end of the filling inner cylinder 11 is fixed to the bottom of the fixing sleeve 9, and the filling inner cylinder 11 and the filling outer cylinder 1 2, a filling channel is formed before, a conductor thickness pressure sensing mechanism 10 is arranged inside the filling inner cylinder 11 for detecting and locating the conductor wire core 6 entering the filling inner cylinder 11; a partition plate 202 is arranged inside the discharge hopper 2 to divide the discharge hopper 2 into a receiving cavity 201 and a cavity 203, an outer grinding cylinder 204 is fixed inside the cavity 203, a grinding discharge rod 206 is arranged inside the outer grinding cylinder 204, the grinding discharge rod 206 is sleeved on the outside of the filling inner cylinder 11, the top end of the grinding discharge rod 206 is rotatably connected to the support platform 20, a protective box 5 is fixed on the surface of the support platform 20, and a driving mechanism for driving the grinding discharge rod 206 to rotate is arranged inside the protective box 5; A rotating heating assembly is provided between the grinding discharge rod 206 and the support table 20, which is used to heat and dry the powder ground in the outer grinding cylinder 204; two electrostatic dust removal rollers 3 are provided on one side of the guide belt assembly, and the electrostatic dust removal rollers 3 are connected to the driving mechanism to realize rotation, and a dust suction assembly is provided on one side of the surface of the electrostatic dust removal roller 3, and the dust suction assembly is used to suck away the dust on the surface of the electrostatic dust removal roller 3 when it rotates.

[0021] The grinding and feeding rod 206 includes a rotating cylinder 2063, the outer surface of which is connected to a spiral pushing portion 2061, a plurality of second grinding teeth 2062 are arranged at the lower end of the spiral pushing portion 2061, a plurality of first grinding teeth 205 matching the second grinding teeth 2062 are arranged inside the outer grinding cylinder 204, the rotating cylinder 2063 is sleeved on the outer surface of the filling inner cylinder 11, and a spiral feeding plate 2064 is arranged on the outer surface of the bottom end of the rotating cylinder 2063.

[0022] Specifically, when the spiral pusher 2061 rotates, it can drive the powder to between the second grinding teeth 2062 and the first grinding teeth 205 for grinding, and the ground powder can be discharged and filled on the spiral discharge plate 2064.

[0023] The driving mechanism includes a double-axis motor 501 fixed on the upper surface of the support platform 20, one driving end of the double-axis motor 501 is rotatably connected to the top of the rotating cylinder 2063 through a bevel gear assembly 503, and the other driving end is connected to the rotating rod 17 through a reversing reducer 502. A protective cover 8 is provided on one side of the two electrostatic dust removal rollers 3, and two meshing gears 81 are provided inside the protective cover 8. The two gears 81 are respectively fixed to one end of the electrostatic dust removal roller 3, and one end of one of the electrostatic dust removal rollers 3 is connected to the rotating rod 17 through a worm gear assembly 82. The dust collection assembly includes two dust collection heads 15 arranged on one side of the electrostatic dust removal roller 3, and a rubber scraper is provided on the surface of the dust collection head 15, and the rubber scraper is in contact with the electrostatic dust removal roller 3. The two dust collection heads 15 are connected to the exhaust fan 16 through a pipeline, and the exhaust fan 16 is fixed to the back of the back plate 1.

[0024] Specifically, the rotation of the dual-axis motor 501 can drive the rotating rod 17 to rotate slowly under the action of the reversing reducer 502, and the rotating rod 17 drives the worm gear assembly 82 to rotate, thereby driving the two electrostatic dust removal rollers 3 to rotate. When the electrostatic dust removal rollers 3 rotate, the rubber scraper on the surface thereof has the function of scraping dust, and the dust is sucked away under the action of the powerful dust removal head 15.

[0025] The belt guide assembly includes two side plates fixed to the surface of the back plate 1, a belt guide roller 14 is arranged between the two side plates, the electrostatic dust removal roller 3 is installed on the surface of the side plates, and an opening 19 is opened near the belt guide roller 14 on the back plate 1 to facilitate the entry of the metal belt.

[0026] The conductor thickness pressure sensing mechanism 10 includes a fixed plate 1002 fixed inside the fixed sleeve 9, the fixed plate 1002 is slidably connected with a spring rod 1003, a pressure sensor 1004 is installed on the inner wall of the fixed sleeve 9, a guide wheel 1001 is fixed to one end of the spring rod 1003, and the other end is in contact with the pressure sensor 1004.

[0027] Specifically, under the same diameter, the required filling amount varies according to the thickness of the conductor core 6, and the rotation speed of the dual-axis motor 501 is adjusted according to the thickness of the conductor core 6, so that the filling speed and the moving speed of the conductor core 6 are balanced. When rotating, the speed increases, which increases the amount of grinding and feeding, and the temperature also increases, so that the drying may not be possible.

[0028] The rotating heating assembly includes a turntable 21 fixed on the outer surface of the grinding blanking rod 206, a magnet 22 is installed on the surface of the turntable 21, a heat-conducting copper coil 23 is arranged above the magnet 22, and the heat-conducting copper coil 23 is fixed on the lower surface of the support platform 20. A spiral heat-conducting copper tube 24 is embedded in the interior of the outer grinding cylinder 204, and the spiral heat-conducting copper tube 24 and the heat-conducting copper coil 23 are connected by a metal copper tube body.

[0029] Specifically, when the magnet 22 rotates at a high speed, the heat-conducting copper coil 23 is heated, and under the action of the metal copper tube body and the spiral heat-conducting copper tube 24, the temperature of the entire outer grinding cylinder 204 is increased to heat and dry.

[0030] Example 2

[0031] The inorganic mineral insulated high temperature resistant cable filling method comprises the following steps: S1, conveying magnesium oxide powder into the discharge hopper 2, the dual-axis motor 501 drives the grinding discharge rod 206 to rotate, and the magnesium oxide powder enters between the grinding discharge rod 206 and the outer grinding cylinder 204 for grinding during the rotation, and the magnesium oxide powder with uniform coarseness after grinding will enter the filling channel as the grinding discharge rod 206 rotates; S2, the conductor core 6 enters the interior of the filling inner cylinder 11 from the fixed sleeve 9, and the pressure feedback from the pressure sensor 1004 in the conductor thickness pressure sensing mechanism 10 causes the dual-axis motor 501 to adjust the speed, thereby adjusting the speed of magnesium oxide powder grinding and feeding; S3, the metal belt is sent out by the external unwinding roller, enters through the opening 19 and passes between the two electrostatic dust removal rollers 3, so that the electrostatic dust removal rollers 3 can absorb dust impurities on the surface of the metal belt. When the dual-axis motor 501 rotates, it can drive the two electrostatic dust removal rollers 3 to rotate in a linked manner, so that the rubber scraper scrapes off the dust on the surface of the electrostatic dust removal rollers 3 and takes it away through the dust suction head 15; S4. The metal tape is formed into a metal tube under the action of the tape guide assembly and the tape winding mechanism 4, and is welded by the welding mechanism 25. The magnesium oxide powder fed will directly enter the space between the metal tube and the conductor core 6 to complete the filling.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inorganic mineral insulated high temperature resistant cable filling device, comprising a back plate (1), a hopper (2) is mounted on the surface of the back plate (1), a feeding mechanism (13) is arranged on one side of the hopper (2), a tape guide assembly, a tape guide frame (18) and a tape winding mechanism (4) are arranged below the hopper (2), a welding mechanism (25) is arranged on one side of the tape winding mechanism (4), a bottom end of the hopper (2) is connected to a filling outer cylinder (12), and the device is characterized in that: A support platform (20) is fixed on the top of the lower hopper (2), a support plate (7) fixed to the back plate (1) is arranged above the support platform (20), a fixing sleeve (9) is arranged on the surface of the support plate (7), a filling inner cylinder (11) is arranged inside the filling outer cylinder (12), the top of the filling inner cylinder (11) is fixed to the bottom of the fixing sleeve (9), a filling channel is formed between the filling inner cylinder (11) and the filling outer cylinder (12), and a conductor thickness pressure sensing mechanism (10) is arranged inside the filling inner cylinder (11) for detecting and locating the conductor wire core (6) entering the filling inner cylinder (11); A partition plate (202) is provided inside the material discharge hopper (2) to divide the material discharge hopper (2) into a material receiving chamber (201) and a cavity (203); an outer grinding cylinder (204) is fixed inside the cavity (203); a grinding material discharge rod (206) is provided inside the outer grinding cylinder (204); the grinding material discharge rod (206) is sleeved on the outside of the filling inner cylinder (11); the top end of the grinding material discharge rod (206) is rotatably connected to the support platform (20); a protective box (5) is fixed on the surface of the support platform (20); a driving mechanism for driving the grinding material discharge rod (206) to rotate is provided inside the protective box (5); A rotating heating component is provided between the grinding feed rod (206) and the support platform (20) for heating and drying the powder material ground in the outer grinding cylinder (204); Two electrostatic dust removal rollers (3) are arranged on one side of the guide belt assembly, and the electrostatic dust removal rollers (3) are connected to a driving mechanism to achieve rotation. A dust suction assembly is arranged on one side of the surface of the electrostatic dust removal roller (3), and the dust suction assembly is used to suck away dust on the surface of the electrostatic dust removal roller (3) when the electrostatic dust removal roller (3) rotates.

2. The inorganic mineral insulated high temperature resistant cable filling device according to claim 1 is characterized in that: The grinding and unloading rod (206) comprises a rotating cylinder (2063), the outer surface of which is connected to a spiral pushing portion (2061), a plurality of second grinding teeth (2062) being arranged at the lower end of the spiral pushing portion (2061), a plurality of first grinding teeth (205) matching the second grinding teeth (2062) being arranged inside the outer grinding cylinder (204), the rotating cylinder (2063) being sleeved on the outer surface of the filling inner cylinder (11), and a spiral unloading plate (2064) being arranged on the outer surface of the bottom end of the rotating cylinder (2063).

3. The inorganic mineral insulated high temperature resistant cable filling device according to claim 2 is characterized in that: The driving mechanism comprises a double-axis motor (501) fixed on the upper surface of the support platform (20), one driving end of the double-axis motor (501) being rotatably connected to the top end of the rotating cylinder (2063) via a bevel gear assembly (503), and the other driving end being connected to a rotating rod (17) via a reversing reducer (502).

4. The inorganic mineral insulated high temperature resistant cable filling device according to claim 3 is characterized in that: A protective cover (8) is provided on one side of the two electrostatic dust removal rollers (3), and two meshing gears (81) are provided inside the protective cover (8). The two gears (81) are respectively fixed to one end of the electrostatic dust removal roller (3), and one end of one of the electrostatic dust removal rollers (3) is connected to the rotating rod (17) via a worm gear assembly (82).

5. The inorganic mineral insulated high temperature resistant cable filling device according to claim 4 is characterized in that: The dust collection assembly comprises two dust collection heads (15) arranged on one side of the electrostatic dust removal roller (3); a rubber scraper is arranged on the surface of the dust collection head (15); the rubber scraper is in contact with the electrostatic dust removal roller (3); the two dust collection heads (15) are connected to an exhaust fan (16) via a pipeline; the exhaust fan (16) is fixed to the back of the back plate (1).

6. The inorganic mineral insulated high temperature resistant cable filling device according to claim 1, characterized in that: The belt guide assembly comprises two side plates fixed to the surface of a back plate (1), a belt guide roller (14) is arranged between the two side plates, the electrostatic dust removal roller (3) is mounted on the surface of the side plates, and an opening (19) is provided at a position of the back plate (1) close to the belt guide roller (14) to facilitate the entry of a metal belt.

7. The inorganic mineral insulated high temperature resistant cable filling device according to claim 1 is characterized in that: The conductor thickness pressure sensing mechanism (10) comprises a fixing plate (1002) fixed inside a fixing sleeve (9), a spring rod (1003) slidably connected to the fixing plate (1002), a pressure sensor (1004) being installed on the inner wall of the fixing sleeve (9), a guide wheel (1001) being fixed to one end of the spring rod (1003), and the other end being in contact with the pressure sensor (1004).

8. The inorganic mineral insulated high temperature resistant cable filling device according to claim 1 is characterized in that: The rotary heating assembly comprises a turntable (21) fixed on the outer surface of a grinding blanking rod (206); a magnet (22) is mounted on the surface of the turntable (21); a heat-conducting copper coil (23) is arranged above the magnet (22); the heat-conducting copper coil (23) is fixed on the lower surface of a support platform (20); a spiral heat-conducting copper tube (24) is embedded in the interior of the outer grinding cylinder (204); the spiral heat-conducting copper tube (24) and the heat-conducting copper coil (23) are connected via a metal copper tube body.

9. A method for filling an inorganic mineral insulated high temperature resistant cable, according to the inorganic mineral insulated high temperature resistant cable filling device according to any one of claims 1 to 8, characterized in that: The steps include: S1, conveying magnesium oxide powder into the discharge hopper (2), the dual-axis motor (501) drives the grinding discharge rod (206) to rotate, and during the rotation, the magnesium oxide powder enters between the grinding discharge rod (206) and the outer grinding cylinder (204) for grinding, and the magnesium oxide powder with uniform coarseness and fineness after grinding enters the filling channel as the grinding discharge rod (206) rotates; S2, the conductor core (6) enters the interior of the filling inner cylinder (11) from the fixed sleeve (9), and the pressure fed back by the pressure sensor (1004) in the conductor thickness pressure sensing mechanism (10) causes the dual-axis motor (501) to adjust the rotation speed, thereby adjusting the speed of grinding and feeding the magnesium oxide powder; S3, the metal belt is fed out by the external unwinding roller, enters through the opening (19) and passes between the two electrostatic dust removal rollers (3), so that the electrostatic dust removal rollers (3) can absorb dust impurities on the surface of the metal belt. When the dual-axis motor (501) rotates, the two electrostatic dust removal rollers (3) can be driven to rotate in a linked manner, so that the rubber scraper scrapes off the dust on the surface of the electrostatic dust removal rollers (3) and takes it away through the dust suction head (15); S4. The metal tape is formed into a metal tube under the action of the tape guide assembly and the tape winding mechanism (4), and is welded by the welding mechanism (25). The magnesium oxide powder fed into the metal tube directly enters the space between the metal tube and the conductor core (6) to complete the filling.

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