Corrosion-resistant silicon core pipe, preparation method and device

Abstract

The invention belongs to the technical field of silicon core pipes, and particularly discloses a corrosion-resistant silicon core pipe and a preparation method and device.The silicon core pipe comprises an outer pipe and an inner pipe wrapping the outer pipe, the outer pipe comprises a supporting layer, a plurality of flexible steel wires are evenly arranged in the supporting layer at intervals in a penetrating mode, and a wear-resistant layer is arranged on the outer wall side of the supporting layer; a heat conduction layer is arranged on the inner wall side of the supporting layer, elastic strips are arranged on the inner side wall of the heat conduction layer at intervals, the sides, away from the heat conduction layer, of the elastic strips are fixedly connected with the outer surface of the inner pipe, the inner pipe comprises a structural layer and a silicon core lubricating layer, and the silicon core lubricating layer is connected with the structural layer and arranged on the inner side of the structural layer. The double-layer structure is arranged, the elastic strip is arranged between the outer tube and the inner tube for connection, the elastic strip has elasticity and has buffering and resetting effects, the tube body is effectively prevented from being deformed and fractured during winding, and protection of optical fibers wrapped in the tube body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of silicon core tubes, and in particular to a corrosion-resistant silicon core tube, a preparation method and a device. Background Art

[0002] The silicone core pipe is a new type of composite pipe with silicone solid lubricant on the inner wall. It has good sealing performance, chemical corrosion resistance, and low engineering cost. It is widely used in optical cable communication network systems of highways, railways, etc. The HDPE silicone core pipe is a new type of composite pipe with silicone solid lubricant on the inner wall. It is referred to as silicone pipe. It is extruded and compounded synchronously by three plastic extruders. The main raw material is high-density polyethylene, and the core layer is silicone, a solid lubricant with the lowest friction coefficient.

[0003] Silicon core tubes can protect cables. In actual applications, silicon core tubes are often corroded and damaged after a period of use due to environmental reasons, thus affecting the protection of the optical cable inside. Environmental reasons include corrosion by chemicals, corrosion by microorganisms, and bites by small animals, among which corrosion by microorganisms is the most important. Summary of the invention

[0004] The object of the present invention is to provide a corrosion-resistant silicon core tube, a preparation method and a device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] In the first aspect, the present invention provides a corrosion-resistant silicon core tube, comprising an outer tube and an inner tube wrapped by the outer tube, the outer tube comprising a supporting layer, a plurality of flexible steel wires being evenly spaced through the supporting layer, a wear-resistant layer being arranged on the outer wall side of the supporting layer, a heat-conducting layer being arranged on the inner wall side of the supporting layer, elastic strips being arranged on the inner wall of the heat-conducting layer at intervals, a side of the elastic strip away from the heat-conducting layer being fixedly connected to the outer surface of the inner tube, the inner tube comprising a structural layer and a silicon core lubricating layer, the silicon core lubricating layer being connected to the structural layer and arranged on the inner side of the structural layer, and a lubricating protrusion with a uniform wavy pattern being arranged on the inner surface of the silicon core lubricating layer.

[0007] Preferably, ribbon grooves are provided at six equal parts on the outer wall of the support layer, ribbon lines are embedded in the ribbon grooves, and the ribbon lines are luminous strips.

[0008] Preferably, the outer side of the support layer is coated with a wear-resistant layer, and the material of the wear-resistant layer is epoxy-modified silicone coating.

[0009] Preferably, the material of the silicon core lubricating layer is silicon-based resin.

[0010] In a second aspect, the present invention provides a method for preparing a corrosion-resistant silicon core tube, comprising:

[0011] Step S1, preparing raw materials, support layer raw materials: 60-70 parts of high-density polyethylene, 10-15 parts of nano-ceramic powder, 5-10 parts of nano-calcium silicate, 2-4 parts of natural antioxidants, 3-5 parts of functional nano-materials, 1-2 parts of plasticizers, 0.5-1 parts of lubricants, 0.1-0.5 parts of stabilizers; thermal conductive layer raw materials: 100 parts of single-component room temperature vulcanized silicone rubber, 200-300 parts of aluminum oxide, 20-50 parts of silicon carbide, and 100 parts of organic silicon crosslinking agents. 2-5 parts of cross-linking agent, 0.5-1.5 parts of tin-based catalyst, 1-3 parts of sedimentation inhibitor, 0.5-1.5 parts of silane coupling agent; raw materials for silicon core lubrication layer: 60 parts of polydimethylsiloxane, 10 parts of organosilicon cross-linking agent, 0.5 parts of catalyst, 15 parts of fumed silica, 1 part of silane coupling agent; the raw materials of the structural layer are the same as the main raw materials of the support layer, only the high-density polyethylene needs to be reduced to 55-65 parts, and 5-10 parts of flame retardant are added;

[0012] Step S2, using a high-speed mixer to evenly mix the raw materials in step S1 according to the formula ratio;

[0013] Step S3, feeding the raw materials mixed in step S2 into extruders respectively, using multiple extruders to extrude and compound synchronously, performing melt extrusion under specified temperature and pressure parameters, and extruding the molten raw materials into an inner tube through a die;

[0014] Step S4, cooling and shaping the extruded inner tube to ensure the stability of the size of the tube, and cutting the cooled tube according to the demand to obtain a tube of a specified length;

[0015] Step S5, bonding one side of the elastic strip to the outer wall of the inner tube;

[0016] Step S6, using another extruder to extrude an outer tube around the inner tube and the elastic strip thereon, and cooling and curing the extruded tube;

[0017] Step S7, using a plastic slotting machine to process the outermost side of the formed tube, and forming a ribbon slot on the outer wall of the outer tube;

[0018] Step S8, coating a wear-resistant layer on the outer wall of the grooved pipe, and then air-drying;

[0019] Step S9, embedding a ribbon line in the ribbon groove on the outermost side of the tube.

[0020] Preferably, in step S6, the outer tube is extruded corresponding to the supporting layer outside the flexible steel wire during extrusion, so that the flexible steel wire is completely covered by the supporting layer. At the same time, the extrusion parameters need to be controlled so that the outer tube fits the inner tube but maintains a certain gap to ensure that the other end of the elastic strip is firmly fixed to the inner wall of the outer tube.

[0021] Preferably, in step S7, after the outer wall of the outer tube is grooved, a grinder is used to remove burrs on the groove edge.

[0022] Preferably, in step S8, the formed pipe needs to be subjected to multiple quality inspections, including pressure testing, weather resistance testing, and temperature cycle testing, to ensure that the pipe maintains stable performance under various environments.

[0023] In a third aspect, the present invention provides a preparation device for a corrosion-resistant silicon core tube, comprising a bracket, a group of fixed plates are arranged opposite to each other at the top of the bracket, two groups of extrusion components installed up and down are arranged between the two fixed plates, the extrusion component comprises an extrusion cylinder with an internal hollow structure, a feed port is arranged on the extrusion plastic cylinder, the feed port is connected to the internal hollow of the extrusion plastic cylinder, an extrusion shaft is installed inside the extrusion cylinder, one end of the extrusion shaft extends outward through a fixed plate at one end, a transmission gear is fixedly arranged on the extended end of the extrusion shaft, a driving gear is installed between the transmission gears of the upper and lower groups of extrusion components, the driving gear is meshed with both transmission gears, the side of the driving gear away from the fixed plate is connected to one end of a belt transmission mechanism, the other end of the belt transmission mechanism is connected to a driving motor, the driving motor is arranged on the lateral end of the bracket, a discharge end is arranged on the side of the extrusion cylinder opposite to the transmission gear, an extrusion die is installed on the fixed plate near the discharge end, a first extrusion cavity and a second extrusion cavity are arranged in the extrusion die, and the first extrusion cavity and the second extrusion cavity are respectively connected to the discharge ends of the two groups of extrusion components.

[0024] Preferably, a rotating roller is arranged on the top of one side of the fixed plate where the discharge end of the extrusion assembly is arranged, and a fixed pulley is installed at the lower end of the rotating roller.

[0025] Compared with the prior art, the invention has the following beneficial effects: a corrosion-resistant silicon core tube designed by the invention is provided with a support layer, and a flexible steel wire is coated inside the support layer to increase the impact resistance of the entire tube body, expand the usage scenarios, and extend the service life; at the same time, a double-layer structure is provided, and an elastic strip is provided between the outer tube and the inner tube to connect; the elastic strip is elastic and has a buffering and resetting effect, which effectively prevents the tube body from being deformed and broken during winding, enhances the tensile resistance effect, and improves the protection of the optical fiber wrapped in the tube body; a structural layer is provided in the inner tube, and the main raw materials in the structural layer are high-density polyethylene and flame retardant. The flame retardant effect of the structural layer reduces the damage to the internal optical fiber caused by fire and reduces the loss; the inner layer of the outer tube is provided with a A heat-conducting layer is arranged to improve the thermal conductivity of the pipe, so that the heat in the pipe can be more conveniently transferred to the external environment, thereby improving the safety of the pipe. In addition, the pipe is also coated with a wear-resistant layer during production. The material of the wear-resistant layer is epoxy-modified silicone coating, which effectively improves the anti-corrosion performance of the pipe and prevents erosion by chemical media and microorganisms. At the same time, the main raw materials of the support layer and the structural layer of the pipe are high-density polyethylene, which has excellent chemical stability and strong corrosion resistance. When producing pipes, a preparation device for a corrosion-resistant silicon core pipe designed by the present invention is used. The device is produced in a double-layer co-extrusion manner, and uses extrusion dies of different specifications. The shaping is precise, the production is convenient, and it has a high application market. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a corrosion-resistant silicon core tube of the present invention;

[0027] Figure 2 The present invention is a schematic structural diagram of a device for preparing a corrosion-resistant silicon core tube.

[0028] In the figure: 1, support layer; 11, ribbon groove; 2, heat conductive layer; 3, structural layer; 4, silicon core lubricating layer; 41, lubricating protrusion block; 5, elastic strip; 6, wear-resistant layer; 7, flexible steel wire; 8, ribbon line;

[0029] 101. bracket; 102. fixing plate; 103. extrusion cylinder; 104. feed port; 105. extrusion shaft; 106. transmission gear; 107. driving gear; 108. belt transmission mechanism; 109. driving motor; 110. discharge end; 111. extrusion die; 112. first extrusion cavity; 113. second extrusion cavity; 114. rotating roller; 115. fixed pulley. DETAILED DESCRIPTION

[0030] 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.

[0031] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1

[0034] See also Figure 1 The present invention provides a corrosion-resistant silicon core tube, comprising an outer tube and an inner tube wrapped by the outer tube, the outer tube comprising a supporting layer 1, a plurality of flexible steel wires 7 are uniformly spaced through the supporting layer 1, a wear-resistant layer 6 is arranged on the outer wall side of the supporting layer 1, a heat-conducting layer 2 is arranged on the inner wall side of the supporting layer 1, elastic strips 5 are arranged on the inner wall of the heat-conducting layer 2 at intervals, the elastic strips 5 are fixedly connected to the outer surface of the inner tube at a side away from the heat-conducting layer 2, the inner tube comprises a structural layer 3 and a silicon core lubricating layer 4, the silicon core lubricating layer 4 is connected to the structural layer 3 and is arranged on the inner side of the structural layer 3, and the inner surface of the silicon core lubricating layer 4 is provided with lubricating protrusions 41 with uniform wavy patterns.

[0035] Furthermore, ribbon grooves 11 are provided at six equal parts on the outer wall of the support layer 1 , and ribbon lines 8 are embedded in the ribbon grooves 11 , and the ribbon lines 8 are luminous strips.

[0036] Furthermore, the outer side of the support layer 1 is coated with a wear-resistant layer 6, and the material of the wear-resistant layer 6 is epoxy-modified silicone coating.

[0037] Furthermore, the material of the silicon core lubricating layer 4 is silicon-based resin.

[0038] Example 2

[0039] The present invention provides a method for preparing a corrosion-resistant silicon core tube, comprising:

[0040] Step S1, preparing raw materials, raw materials for support layer 1: 60-70 parts of high-density polyethylene, 10-15 parts of nano-ceramic powder, 5-10 parts of nano-calcium silicate, 2-4 parts of natural antioxidant, 3-5 parts of functional nano-materials, 1-2 parts of plasticizer, 0.5-1 parts of lubricant, 0.1-0.5 parts of stabilizer; raw materials for heat-conducting layer 2: 100 parts of single-component room temperature vulcanized silicone rubber, 200-300 parts of aluminum oxide, 20-50 parts of silicon carbide, and 100 parts of organic silicon crosslinking agent. 2-5 parts of cross-linking agent, 0.5-1.5 parts of tin-based catalyst, 1-3 parts of sedimentation inhibitor, 0.5-1.5 parts of silane coupling agent; raw materials of silicon core lubricating layer 4: 60 parts of polydimethylsiloxane, 10 parts of organosilicon cross-linking agent, 0.5 parts of catalyst, 15 parts of fumed silica, 1 part of silane coupling agent; the raw materials of structural layer 3 are the same as the main raw materials of supporting layer 1, only high-density polyethylene needs to be reduced to 55-65 parts, and 5-10 parts of flame retardant can be added;

[0041] Step S2, using a high-speed mixer to evenly mix the raw materials in step S1 according to the formula ratio;

[0042] Step S3, feeding the raw materials mixed in step S2 into extruders respectively, using multiple extruders to extrude and compound synchronously, performing melt extrusion under specified temperature and pressure parameters, and extruding the molten raw materials into an inner tube through a die;

[0043] Step S4, cooling and shaping the extruded inner tube to ensure the stability of the size of the tube, and cutting the cooled tube according to the demand to obtain a tube of a specified length;

[0044] Step S5, bonding one side of the elastic strip 5 to the outer wall of the inner tube;

[0045] Step S6, using another extruder to extrude an outer tube around the inner tube and the elastic strip 5 thereon, and cooling and curing the extruded tube;

[0046] Step S7, using a plastic slotting machine to process the outermost side of the formed tube, and forming a ribbon slot 11 on the outer wall of the outer tube;

[0047] Step S8, coating the wear-resistant layer 6 on the outer wall of the grooved pipe, and then air-drying;

[0048] Step S9, embedding the ribbon line 8 in the ribbon groove 11 on the outermost side of the tube.

[0049] Furthermore, in step S6, the outer tube is extruded corresponding to the supporting layer 1 outside the flexible steel wire 7 during extrusion, so that the flexible steel wire 7 is completely covered inside the supporting layer 1. At the same time, the extrusion parameters need to be controlled so that the outer tube fits the inner tube but maintains a certain gap to ensure that the other end of the elastic strip 5 is firmly fixed to the inner wall of the outer tube.

[0050] Furthermore, in step S7, after the outer wall of the outer tube is grooved, a grinder is used to remove burrs on the groove edge.

[0051] Furthermore, in step S8, the formed pipe needs to be subjected to multiple quality inspections, including pressure testing, weather resistance testing, and temperature cycle testing, to ensure that the pipe maintains stable performance under various environments.

[0052] Example 3

[0053] See also Figure 2 The present invention provides a preparation device for a corrosion-resistant silicon core tube, comprising a bracket 101, a group of fixed plates 102 are arranged at the top of the bracket 101, two groups of extrusion components installed up and down are arranged between the two fixed plates 102, the extrusion components include an extrusion cylinder 103 with an internal hollow structure, a feed inlet 104 is arranged on the extrusion cylinder, the feed inlet 104 is connected to the internal hollow of the extrusion cylinder, an extrusion shaft 105 is installed inside the extrusion cylinder 103, one end of the extrusion shaft 105 passes through the fixed plate 102 at one end and extends outward, a transmission gear 106 is fixedly arranged on the extended end of the extrusion shaft 105, a driving gear 107 is installed between the transmission gears 106 of the upper and lower groups of extrusion components, and the driving gear The wheel 107 is meshed with both transmission gears 106. The side of the driving gear 107 away from the fixed plate 102 is connected to one end of a belt transmission mechanism 108. The other end of the belt transmission mechanism 108 is connected to a driving motor 109. The driving motor 109 is arranged on the lateral end of the bracket 101. A discharge end 110 is arranged on the side of the extrusion cylinder 103 opposite to the transmission gear 106. An extrusion die head 111 is installed on the fixed plate 102 near the discharge end 110. A first extrusion cavity 112 and a second extrusion cavity 113 are arranged in the extrusion die head 111. The first extrusion cavity 112 and the second extrusion cavity 113 are respectively connected to the discharge ends 110 of the two groups of extrusion components.

[0054] Furthermore, a rotating roller 114 is arranged on the top of one side of the fixed plate 102 where the extrusion assembly discharge end 110 is arranged, and a fixed pulley 115 is installed at the lower end of the rotating roller 114 .

[0055] During specific use, the extrusion die 111 is replaced according to production needs. The extrusion cavity specifications of the extrusion die 111 limit the shape of the extruded pipe. First, when extruding the inner tube, the drive motor 109 is directly started to drive the extrusion shaft 105 to extrude the raw material. The raw material enters the extrusion cavity from the discharge end 110, and the outer structural layer 3 is extruded from the first extrusion cavity 112, and the internal silicone core lubricating layer 4 is extruded from the second extrusion cavity 113. After the inner tube is extruded, it is cooled and shaped, and then the elastic strip 5 is bonded, and then the outer tube is extruded. At this time, the already shaped inner tube is wound around the rotating roller 114, and then one end of the inner tube is passed through the extrusion die 111. When extruding the outer tube, the extrusion die 111 is replaced, and the drive motor 109 is started again to drive the extrusion shaft 105 to extrude the raw material. At this time, the outer supporting layer 1 is extruded from the first extrusion cavity, and the internal thermal conductive layer 2 is extruded from the second extrusion cavity 113. After extrusion, it is cooled and shaped again, and cutting is performed. Subsequently, the ribbon slot 11 is opened, and the wear-resistant layer 6 is coated and other processing is performed.

[0056] 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. A corrosion-resistant silicon core tube, characterized in that: The invention comprises an outer tube and an inner tube wrapped by the outer tube, wherein the outer tube comprises a support layer (1), a plurality of flexible steel wires (7) are uniformly spaced through the support layer (1), a wear-resistant layer (6) is arranged on the outer wall side of the support layer (1), a heat-conducting layer (2) is arranged on the inner wall side of the support layer (1), elastic strips (5) are arranged on the inner wall of the heat-conducting layer (2), and the side of the elastic strips (5) away from the heat-conducting layer (2) is fixedly connected to the outer surface of the inner tube, and the inner tube comprises a structural layer (3) and a silicon core lubricating layer (4), the silicon core lubricating layer (4) is connected to the structural layer (3) and is arranged on the inner side of the structural layer (3), and the inner surface of the silicon core lubricating layer (4) is provided with lubricating protrusions (41) with uniform wavy patterns.

2. A corrosion-resistant silicon core tube according to claim 1, characterized in that: Color ribbon grooves (11) are provided at six equal parts on the outer wall of the support layer (1), and color ribbon lines (8) are embedded in the color ribbon grooves (11), and the color ribbon lines (8) are luminous strips.

3. The corrosion-resistant silicon core tube according to claim 1, characterized in that: The outer side of the support layer (1) is coated with a wear-resistant layer (6), and the material of the wear-resistant layer (6) is epoxy-modified organic silicon coating.

4. The corrosion-resistant silicon core tube according to claim 1, characterized in that: The material of the silicon core lubricating layer (4) is silicon-based resin.

5. A method for preparing a corrosion-resistant silicon core tube, characterized in that: include: Step S1, preparing raw materials, support layer (1) raw materials: 60-70 parts of high-density polyethylene, 10-15 parts of nano-ceramic powder, 5-10 parts of nano-calcium silicate, 2-4 parts of natural antioxidant, 3-5 parts of functional nano-material, 1-2 parts of plasticizer, 0.5-1 parts of lubricant, 0.1-0.5 parts of stabilizer; thermal conductive layer (2) raw materials: 100 parts of single-component room temperature vulcanized silicone rubber, 200-300 parts of aluminum oxide, 20-50 parts of silicon carbide, silicone cross-linking agent The raw materials of the silicon core lubricating layer (4) are as follows: 60 parts of polydimethylsiloxane, 10 parts of organic silicon crosslinking agent, 0.5 parts of catalyst, 15 parts of fumed silica, and 1 part of silane coupling agent; the raw materials of the structural layer (3) are the same as the main raw materials of the supporting layer (1), except that the high-density polyethylene needs to be reduced to 55-65 parts, and 5-10 parts of flame retardant need to be added; Step S2, using a high-speed mixer to evenly mix the raw materials in step S1 according to the formula ratio; Step S3, feeding the raw materials mixed in step S2 into extruders respectively, using multiple extruders to extrude and compound synchronously, performing melt extrusion under specified temperature and pressure parameters, and extruding the molten raw materials into an inner tube through a die; Step S4, cooling and shaping the extruded inner tube to ensure the stability of the size of the tube, and cutting the cooled tube according to the demand to obtain a tube of a specified length; Step S5, bonding one side of the elastic strip (5) to the outer wall of the inner tube; Step S6, using another extruder to extrude an outer tube around the inner tube and the elastic strip (5) thereon, and cooling and curing the extruded tube; Step S7, using a plastic slotting machine to process the outermost side of the formed tube, and forming a ribbon slot (11) on the outer wall of the outer tube; Step S8, coating the wear-resistant layer (6) on the outer wall of the grooved pipe, and then air-drying; Step S9, embedding the ribbon line (8) in the ribbon groove (11) on the outermost side of the tube.

6. The method for preparing a corrosion-resistant silicon core tube according to claim 5, characterized in that: In step S6, the outer tube is extruded corresponding to the supporting layer (1) outside the flexible steel wire (7) during extrusion, so that the flexible steel wire (7) is completely covered inside the supporting layer (1). At the same time, it is necessary to control the extrusion parameters so that the outer tube fits the inner tube but maintains a certain gap to ensure that the other end of the elastic strip (5) is firmly fixed to the inner wall of the outer tube.

7. The method for preparing a corrosion-resistant silicon core tube according to claim 5, characterized in that: In step S7, after the outer wall of the outer tube is grooved, a grinder is used to remove burrs on the groove edge.

8. The method for preparing a corrosion-resistant silicon core tube according to claim 5, characterized in that: In step S8, the formed pipe needs to undergo multiple quality inspections, including pressure testing, weather resistance testing, and temperature cycle testing, to ensure that the pipe maintains stable performance under various environments.

9. A device for preparing a corrosion-resistant silicon core tube, characterized in that: The invention comprises a support (101), a group of fixed plates (102) are arranged on the top of the support (101), two groups of extrusion components are arranged between the two fixed plates (102), the extrusion components include an extrusion cylinder (103) with an internal hollow structure, a feed inlet (104) is arranged on the extrusion cylinder, the feed inlet (104) is connected to the internal hollow of the extrusion cylinder, an extrusion shaft (105) is arranged inside the extrusion cylinder (103), one end of the extrusion shaft (105) passes through the fixed plate (102) at one end and extends outward, a transmission gear (106) is fixedly arranged on the extended end of the extrusion shaft (105), a driving gear (107) is installed between the transmission gears (106) of the upper and lower groups of extrusion components, and the driving gear (107) and the two transmission gears (106) are connected. ) are all meshed, the side of the driving gear (107) away from the fixed plate (102) is connected to one end of the belt transmission mechanism (108), the other end of the belt transmission mechanism (108) is connected to the driving motor (109), the driving motor (109) is arranged on the lateral end of the bracket (101), the side of the extrusion cylinder (103) opposite to the side where the transmission gear (106) is arranged is provided with a discharge end (110), the fixed plate (102) near the discharge end (110) is installed with an extrusion die head (111), a first extrusion cavity (112) and a second extrusion cavity (113) are arranged in the extrusion die head (111), the first extrusion cavity (112) and the second extrusion cavity (113) are respectively connected to the discharge ends (110) of the two groups of extrusion components.

10. The device for preparing a corrosion-resistant silicon core tube according to claim 9, characterized in that: A rotating roller (114) is arranged on the top of one side of the fixed plate (102) where the extrusion assembly discharge end (110) is arranged, and a fixed pulley (115) is installed at the lower end of the rotating roller (114).

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