Production equipment and process for DC cross-linked polyethylene insulation material

Abstract

This invention discloses a production equipment and process for DC cross-linked polyethylene insulation material, aiming to provide a production equipment and process for DC cross-linked polyethylene insulation material with good raw material mixing effect. S1. Component Proportioning: After drying the raw materials, they are proportioned into corresponding components; S2. Component Proportion Mixing: The proportioned components are placed into a mixing tank and mixed; S3. Heated Extrusion: The mixed material is placed into an extruder to complete the extrusion molding of the insulation material. The beneficial effects of this invention are: different raw material components are discharged from the feeding tank and storage tank respectively, entering the tank shell. Simultaneously, the feeding tank and storage tank rotate under the drive of a rotating motor, and the resulting centrifugal force discharges the raw material components from dispersion holes two and one respectively, entering the tank shell, ensuring thorough mixing and resulting in a good mixing effect.

Description

Technical Field

[0001] This invention relates to the technical field of insulation material production, and in particular to a production equipment and process for DC cross-linked polyethylene insulation material. Background Technology

[0002] Electric wires and cables are key components of power transmission, and the insulation material is one of the key factors determining the cable's voltage resistance. Cross-linked polyethylene (XLPE) has become the main insulation material for cables in recent years due to its excellent dielectric properties, good heat resistance, and processability.

[0003] Chinese Patent Application Publication No. CN 110878152 A, Publication Date: March 13, 2020, discloses a method for preparing ultra-clean cross-linkable polyethylene insulation material for high-voltage cables. The method comprises: 1) Weighing 100 parts by weight of polyethylene resin, 0.2-0.5 parts by weight of antioxidant, and 1.5-2.0 parts by weight of cross-linking agent; 2) Simultaneously adding the weighed polyethylene resin and antioxidant to a mixer and mixing uniformly at a temperature of 130-200℃ to obtain the material; 3) The material enters a melt pump, which forces the material through a dual-position hydraulic screen-changing filter for filtration, and the filtered material enters a single-screw extruder. The granulation process involves granulation in a granulator, followed by cooling with pure water and conveying to a centrifugal dewatering machine for centrifugal dehydration and drying. The granules are then preheated to 60–90°C and fed into a rotary drum mixer, where they are maintained at 60–90°C. A weighed crosslinking agent is sprayed onto the surface of the granules, and the mixer continues to rotate until the surface is dry, resulting in granules mixed with the crosslinking agent. The granules then enter an absorption silo and are homogenized at 60–90°C for 3–20 hours, followed by cooling to 30–50°C. This completes the preparation of ultra-clean crosslinkable polyethylene insulation material for high-voltage cables. While this method yields polyethylene with high purity, it lacks specific solutions for the mixing equipment used in the production process and thus lacks improvements in process equipment.

[0004] Therefore, it is necessary to design a production equipment and process for DC cross-linked polyethylene insulation material to improve the mixing effect of raw materials and improve the product quality of polyethylene insulation material. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of poor raw material mixing in the prior art and provides a production equipment and process for DC cross-linked polyethylene insulation material with good raw material mixing effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a production process for DC cross-linked polyethylene insulation material, comprising the following steps.

[0007] S1. Components are formulated in proportion: After drying the raw materials, they are formulated into the corresponding components in proportion.

[0008] S2. Component Proportion Mixing: Place the proportioned components into a mixing tank and mix them.

[0009] S3. Heated extrusion: The mixed materials are put into the extruder to complete the extrusion molding of the insulation material.

[0010] The production of polyethylene insulation involves blending various raw materials into corresponding components in a specific ratio. Before blending, the raw materials are dried to ensure they are in a dry state before mixing, thus guaranteeing the final state of the raw materials in the blended components. The blended components are then placed into a mixing tank according to their proportions and thoroughly mixed to ensure effective mixing. The mixed raw materials are then fed into an extruder, where heating forces the materials to be extruded and molded into shape, completing the production of cross-linked polyethylene insulation.

[0011] Preferably, the mixing tank in step S2 includes a tank shell and a stirring assembly placed inside the tank shell. The stirring assembly is rotatably connected to the tank shell. The stirring assembly includes a storage tank and a feeding tank. The feeding tank is placed inside the storage tank and is sleeved with the storage tank. Both the feeding tank and the storage tank are in communication with the inside of the tank shell. The outer wall of the storage tank is provided with several uniformly arranged stirring blocks. The mixing tank in step S2 consists of a tank shell and a stirring assembly. The tank shell serves as the container for mixing, and the stirring assembly stirs the raw materials added to the tank shell to ensure thorough mixing and a good mixing effect. The stirring assembly includes a storage tank and a feeding tank, which are used to hold raw materials of different components. Both the feeding tank and the storage tank are connected to the tank shell, allowing the raw materials added to the feeding tank and the storage tank to be transferred into the tank shell. The outer wall of the storage tank is equipped with a stirring block, and the storage tank can rotate relative to the tank shell. During rotation, the stirring block can stir the raw materials entering the tank shell to ensure thorough mixing and a good mixing effect.

[0012] Preferably, the bottom sidewall of the storage hopper is provided with a plurality of dispersion holes, and the bottom of the storage hopper is provided with an installation block. The feeding hopper passes through the bottom surface of the storage hopper, the installation block and the bottom surface of the hopper shell in sequence. The sidewall of the end of the feeding hopper that extends out of the bottom surface of the hopper shell is connected to an annular rack. The bottom surface of the hopper shell is connected to a rotating motor, and the rotating motor is connected to a rotating gear. The rotating gear meshes with the rack. The bottom and side walls of the storage hopper are uniformly arranged with dispersion holes to ensure that the raw material components fed into the storage hopper can be discharged through the dispersion holes and enter the hopper shell for mixing. The feeding hopper is nested with the storage hopper and passes through the bottom of the storage hopper, the mounting block, and the hopper shell in sequence, and is connected to the storage hopper, the mounting block, and the hopper shell. A rack is installed on the outer wall of the end of the feeding hopper that extends out of the bottom of the hopper shell. The rack is wrapped in a ring around the outer wall of the feeding hopper. A rotating gear is connected to the motor shaft of the rotating motor connected to the bottom of the hopper shell. The rotating gear meshes with the rack. The rotation of the rotating motor drives the rotating gear to mesh with the rack, causing the feeding hopper to rotate. Under the action of centrifugal force, the raw material components fed into the storage hopper are discharged through the dispersion holes and enter the hopper shell. By adjusting the rotation speed of the rotating motor, the amount of raw material discharged through the dispersion holes can be adjusted, thereby controlling the mixing effect and effectively improving the mixing effect of the raw materials.

[0013] Preferably, the inner wall of the mounting block is provided with an annular connecting groove, the connecting groove having a conical cross-sectional shape. The inner side of the connecting groove is provided with several dispersing holes (II). The side wall of the feeding hopper is provided with a connecting opening, which communicates with the connecting groove. The connecting groove on the inner wall of the mounting block is an annular groove with a conical cross-sectional shape. The dispersing holes (II) on the inner side wall of the connecting groove are evenly arranged and are rectangular in shape. The connecting opening on the side wall of the feeding hopper communicates with the connecting groove, allowing the raw material components fed into the feeding hopper to enter the connecting groove through the connecting opening. The mounting block rotates with the feeding hopper, and the raw material components entering the connecting groove from the feeding hopper are discharged through the dispersing holes (II) under centrifugal force, entering the hopper shell and mixing with the raw material components discharged from the dispersing holes (I), resulting in more thorough mixing and a better mixing effect.

[0014] Preferably, the feeding hopper is equipped with a conical dispersing platform inside, with the side of the dispersing platform positioned within the connecting groove. The side of the dispersing platform is parallel to the inner top surface of the connecting groove. This conical dispersing platform, with its side slope positioned within the connecting groove and its height lower than the inner top slope of the connecting groove, allows the raw materials fed into the feeding hopper to pass through the side slope of the dispersing platform into the connecting groove. This ensures the raw materials are evenly distributed into the connecting groove. The rotation of the feeding hopper drives the mounting platform to rotate, causing the raw materials to be evenly discharged from the second dispersing hole under centrifugal force. This mixture then enters the hopper shell and mixes thoroughly with the raw materials discharged from the first dispersing hole, ensuring effective mixing.

[0015] Preferably, the sidewall of the dispersing platform is provided with several radially penetrating air inlets. An air inlet pipe is connected to the bottom of the dispersing platform, with one end of the pipe connected to the air inlet and the other end connected to an air pump. The air pump is connected to the bottom of the feeding hopper. Several air inlets are also provided at the end of the inclined sidewall of the dispersing platform, penetrating radially. An air inlet pipe is connected to the bottom of the dispersing platform, connecting to the air inlets and the air pump. The air pump blows air through the air inlet into the air inlets. The air blown out from the air inlets can expel the raw materials entering the connecting trough from the connecting trough and discharge them through the second dispersing hole. This allows the raw material components entering from the feeding hopper to be better discharged through the second dispersing hole, facilitating the mixing and stirring of the raw materials inside the hopper shell and achieving a better mixing effect.

[0016] Preferably, the air inlet and the second dispersion hole are coaxially aligned. The central axes of the air inlet and the second dispersion hole are aligned on the same axis, ensuring that the gas blown from the air inlet directly reaches the second dispersion hole. This improves the efficiency of the raw material components placed in the connecting groove being discharged from the second dispersion hole, ensuring that the raw material components can quickly enter the barrel shell and mix with other raw material components, thus guaranteeing mixing efficiency and effectiveness.

[0017] Preferably, the bottom surface of the barrel shell is provided with a discharge hole, which is located between the inner wall of the barrel shell and the outer wall of the storage barrel. A discharge pipe is provided at the bottom of the barrel shell, communicating with the discharge hole. A clearance opening is provided on the side wall of the discharge pipe, and a baffle is installed inside the clearance opening. The baffle is elastically hinged to the clearance opening. The discharge hole on the bottom surface of the barrel shell is located between the inner wall of the barrel shell and the outer wall of the storage barrel. The mixed raw materials can be discharged through the discharge hole. A discharge pipe is connected to the discharge hole, and a clearance opening for installing the baffle is provided on the discharge pipe. The baffle is placed at the clearance opening and connected to the clearance opening via a hinge spring. When closed, the baffle prevents raw materials from being discharged from the discharge pipe during mixing.

[0018] Preferably, the stirring block is an arc-shaped wedge-shaped block, with the inclined ends of the stirring block facing the same direction. The stirring blocks are arc-shaped and evenly arranged around the side wall of the storage tank. The stirring blocks are wedge-shaped blocks with an inclined surface on one side. The inclined surface of the stirring blocks can effectively stir and mix the raw materials entering the tank shell, ensuring improved stirring effect and good mixing of raw materials.

[0019] Preferably, the top of the barrel shell is provided with a sealing cover, which is connected to a feeding pipe and an inlet pipe. The feeding pipe is connected to a feeding barrel, and the inlet pipe is connected to a storage barrel. The feeding pipe and the inlet pipe can respectively add raw material components into the feeding barrel and the storage barrel, allowing different raw materials to be added separately and mixed inside the barrel shell from the feeding barrel and the storage barrel respectively, resulting in a better mixing effect.

[0020] The beneficial effects of this invention are as follows: different raw material components are discharged from the feeding hopper and the storage hopper respectively and enter the barrel shell. At the same time, the feeding hopper and the storage hopper rotate under the drive of the rotating motor. The centrifugal force generated by the rotation drives the raw material components to be discharged from the second dispersion hole and the first dispersion hole respectively and enter the barrel shell, ensuring thorough mixing and good mixing effect. A conical dispersion platform is provided in the feeding hopper. The dispersion platform can allow the raw material components entering the feeding hopper to enter the connecting trough along the side slope above the dispersion platform. With the air inlet provided on the side wall of the dispersion platform, the raw material components can be quickly entered into the barrel shell under the action of centrifugal force and gas thrust, which facilitates the stirring and mixing of the raw material components in the barrel shell. A wedge-shaped stirring block is provided on the side wall of the storage hopper, which can improve the stirring effect and ensure good mixing effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a perspective view of the stirring assembly in this invention;

[0024] Figure 4 This is a schematic diagram of the feeding barrel structure in this invention;

[0025] Figure 5 This is a three-dimensional schematic diagram of the dispersing platform in this invention;

[0026] Figure 6 This is a cross-sectional view of the discharge pipe in this invention.

[0027] In the attached diagram,

[0028] 1. Shell, 2. Mixing assembly, 3. Storage tank, 4. Feeding tank, 5. Mixing block, 6. Dispersion platform, 10. Discharge hole, 11. Discharge pipe, 12. Clearance port, 13. Baffle, 14. Sealing cover, 15. Feeding pipe, 16. Feeding pipe, 30. Dispersion hole one, 31. Mounting block, 32. Connecting groove, 33. Dispersion hole two, 40. Rack, 41. Rotating motor, 42. Rotating gear, 43. Connecting port, 60. Air inlet, 61. Air inlet pipe, 62. Air pump. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components illustrated in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0033] Example 1, as Figure 1-6 As shown, a production process for DC cross-linked polyethylene insulation material is characterized by the following steps.

[0034] S1. Components are formulated in proportion: After drying the raw materials, they are formulated into the corresponding components in proportion.

[0035] S2. Component Proportion Mixing: Place the proportioned components into a mixing tank and mix them.

[0036] S3. Heated extrusion: The mixed materials are put into the extruder to complete the extrusion molding of the insulation material.

[0037] The mixing tank in step S2 includes a tank shell 1 and a stirring assembly 2 placed inside the tank shell 1. The stirring assembly 2 is rotatably connected to the tank shell 1. The stirring assembly 2 includes a storage tank 3 and a feeding tank 4. The feeding tank 4 is placed inside the storage tank 3 and is sleeved with the storage tank 3. Both the feeding tank 4 and the storage tank 3 are in communication with the inside of the tank shell 1. The outer wall of the storage tank 3 is provided with a plurality of evenly arranged stirring blocks 5.

[0038] The bottom sidewall of the storage bin 3 has several dispersing holes 30. A mounting block 31 is located at the bottom of the storage bin 3. The feeding bin 4 passes sequentially through the bottom surface of the storage bin 3, the mounting block 31, and the bottom surface of the bin shell 1. A ring-shaped rack 40 is connected to the sidewall of the end of the feeding bin 4 extending beyond the bottom surface of the bin shell 1. A rotating motor 41 is connected to the bottom surface of the bin shell 1. The rotating motor 41 is connected to a rotating gear 42. The rotating gear 42 meshes with the rack 40.

[0039] The inner wall of the mounting block 31 is provided with an annular connecting groove 32. The connecting groove 32 has a conical cross-section. Several dispersing holes 33 are provided on the inner side of the connecting groove 32. The side wall of the feeding hopper 4 is provided with a connecting port 43. The connecting port 43 communicates with the connecting groove 32. A conical dispersing platform 6 is provided inside the feeding hopper 4. The side of the dispersing platform 6 is placed inside the connecting groove 32. The side of the dispersing platform 6 is parallel to the inner top surface of the connecting groove 32. Several radially penetrating air inlets 60 are provided on the side wall of the dispersing platform 6. An air inlet pipe 61 is connected to the bottom of the dispersing platform 6. One end of the air inlet pipe 61 is connected to the air inlet hole 60. The other end of the air inlet pipe 61 is connected to the air pump 62. The air pump 62 is connected to the bottom of the feeding hopper 4. The air inlet hole 60 and the dispersing holes 33 are coaxially aligned.

[0040] A discharge hole 10 is provided on the bottom surface of the barrel shell 1. The discharge hole 10 is located between the inner wall of the barrel shell 1 and the outer wall of the storage barrel 3. A discharge pipe 11 is provided at the bottom of the barrel shell 1, and the discharge pipe 11 communicates with the discharge hole 10. A clearance opening 12 is provided on the side wall of the discharge pipe 11. A baffle 13 is provided inside the clearance opening 12. The baffle 13 is elastically hinged to the clearance opening 12. The stirring block 5 is an arc-shaped wedge block. The inclined ends of the stirring block 5 face the same direction.

[0041] A sealing cover 14 is provided on the top of the barrel shell 1. The sealing cover 14 is connected to a feeding pipe 15 and an inlet pipe 16. The feeding pipe 15 is connected to the feeding barrel 4. The inlet pipe 16 is connected to the storage barrel 3.

[0042] The working principle of this invention is as follows: Figure 1-6As shown, in the production and processing of DC cross-linked polyethylene insulation material, the raw materials are first proportioned and dried before proportioning. The proportioned raw material components need to be mixed in proportion, and a mixing tank is required for mixing. The mixing tank includes a tank shell 1, and a storage tank 3 is nested inside the tank shell 1. A stirring block 5 is provided on the outer wall of the storage tank 3. The stirring block 5 is a wedge-shaped block, which stirs and mixes the raw materials placed between the side wall of the storage tank 3 and the inner wall of the tank shell 1. The wedge-shaped stirring block 5 is provided with an inclined end, which facilitates the stirring and mixing of the raw material components, resulting in a good mixing effect. A feeding tank 4 is provided inside the storage tank 3. The feeding tank 4 passes through the bottom surface of the storage tank 3, the mounting block 31, and the bottom surface of the tank shell 1 in sequence. An annular toothed rack 40 is provided on the side wall of the end of the feeding tank 4 that extends out of the bottom surface of the tank shell 1. The toothed rack 40 is connected around the side wall of the feeding tank 1. A rotating motor 41 is connected to the bottom of the barrel shell 1. A rotating gear 42 is connected to the connecting shaft end of the rotating motor 41. The rotating gear 42 meshes with a rack 40. The rotation of the rotating motor 41 can drive the feeding barrel 4 to rotate, thereby causing the storage barrel 3 and the mounting block 31 to rotate synchronously, achieving a rotational stirring effect. Several dispersion holes 30 are provided on the bottom side wall of the storage barrel 3. The dispersion holes 30 are evenly arranged around the wall of the storage barrel 3. When the storage barrel 3 rotates, the raw material components placed in the storage barrel 3 will generate centrifugal force, and the raw material components will be discharged from the dispersion holes 30 under the centrifugal force and enter the barrel shell 1 for mixing and stirring. A connecting port is provided on the side wall of the feeding barrel 4, and a connecting groove 32 is provided on the side wall of the mounting block 31. The connecting port is connected to the connecting groove 32. A conical dispersing platform 6 is provided inside the feeding barrel 4. The height of the side slope of the dispersing platform 6 is lower than the height of the side top surface of the connecting groove 32, so that the raw material components fed into the feeding barrel 4 are dispersed by the dispersing platform 6 and enter the connecting groove 32. A number of evenly arranged dispersing holes 33 are provided on the inner side wall of the connecting groove 32. The dispersing holes 33 are used to discharge the raw material components entering from the feeding barrel 4. Several evenly arranged air inlets 60 are provided on the side wall of the dispersing platform 6. An air inlet pipe 61 is connected to the bottom of the dispersing platform 6. The air inlet pipe 61 is connected to the air inlets 60 and the air inlet pipe 61 is connected to the air pump 62. The air pump 62 blows out gas, and the gas enters the air inlet 60 from the air inlet pipe 61. The air inlet 60 is aligned with the central axis of the dispersing hole 33, so that the gas blown out from the air inlet 60 can quickly blow out the raw material components placed in the connecting groove 32 and enter the barrel shell 1 from the dispersing hole 33. The gas, together with the stirring action of the stirring block 5 on the rotating storage barrel 3, mixes and stirs the raw material components entering the barrel shell 1, ensuring the mixing effect. A discharge hole 10 is provided at the bottom of the barrel shell 1. The discharge hole 10 is connected to the discharge pipe 11. A baffle 13 is connected inside the relief opening 12 provided on the side wall of the discharge pipe 11. The baffle 13 is used to block the discharge pipe 11 to prevent raw materials from flowing out of the discharge pipe 11 during mixing, so that the raw materials entering the next process are not fully mixed.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A production process for DC cross-linked polyethylene insulation material, characterized in that, The steps are as follows: S1. Components are formulated in proportion: After drying the raw materials, they are formulated into the corresponding components in proportion. S2. Component Proportion Mixing: Place the proportioned components into a mixing tank and mix them. S3. Heated extrusion: The mixed materials are fed into the extruder to complete the extrusion molding of the insulation material; The mixing tank in step S2 includes a tank shell (1) and a stirring assembly (2) placed inside the tank shell (1). The stirring assembly (2) is rotatably connected to the tank shell (1). The stirring assembly (2) includes a storage tank (3) and a feeding tank (4). The feeding tank (4) is placed inside the storage tank (3) and is sleeved with the storage tank (3). Both the feeding tank (4) and the storage tank (3) are connected to the inside of the tank shell (1). The outer wall of the storage tank (3) is provided with a plurality of evenly arranged stirring blocks (5). The bottom sidewall of the storage bin (3) is provided with several dispersion holes (30). The bottom of the storage bin (3) is provided with an installation block (31). The feeding bin (4) passes through the bottom surface of the storage bin (3), the installation block (31) and the bottom surface of the barrel shell (1) in sequence. The sidewall of the end of the feeding bin (4) that extends out of the bottom surface of the barrel shell (1) is connected with an annular rack (40). The bottom surface of the barrel shell (1) is connected with a rotating motor (41). The rotating motor (41) is connected with a rotating gear (42). The rotating gear (42) and The rack (40) engages, and the inner wall of the mounting block (31) is provided with an annular connecting groove (32). The connecting groove (32) has a conical cross-section. The inner side of the connecting groove (32) is provided with a plurality of dispersing holes (33). The side wall of the feeding barrel (4) is provided with a connecting port (43), which communicates with the connecting groove (32). The inside of the feeding barrel (4) is provided with a conical dispersing platform (6). The side of the dispersing platform (6) is placed inside the connecting groove (32). The side of the dispersing platform (6) is parallel to the inner top surface of the connecting groove (32). The side wall of the dispersing platform (6) is provided with several radially penetrating air inlets (60). The bottom of the dispersing platform (6) is connected to an air inlet pipe (61). One end of the air inlet pipe (61) is connected to the air inlet (60), and the other end of the air inlet pipe (61) is connected to an air pump (62). The air pump (62) is connected to the bottom of the feeding barrel (4). The air inlet (60) and the second dispersing hole (33) are coaxially aligned.

2. The production process of a DC cross-linked polyethylene insulation material according to claim 1, characterized in that, The bottom surface of the barrel shell (1) is provided with a discharge hole (10), which is located between the inner wall of the barrel shell (1) and the outer wall of the storage barrel (3). The bottom of the barrel shell (1) is provided with a discharge pipe (11), which is connected to the discharge hole (10). The side wall of the discharge pipe (11) is provided with a clearance opening (12), and a baffle (13) is provided inside the clearance opening (12). The baffle (13) is elastically hinged to the clearance opening (12).

3. The production process of a DC cross-linked polyethylene insulation material according to claim 1, characterized in that, The stirring block (5) is an arc-shaped wedge block, and the inclined end of the stirring block (5) faces the same direction.

4. The production process of a DC cross-linked polyethylene insulation material according to claim 1, characterized in that, The top of the barrel shell (1) is provided with a sealing cover (14), the sealing cover (14) is connected to a feeding pipe (15) and a feed pipe (16), the feeding pipe (15) is connected to the feeding barrel (4), and the feed pipe (16) is connected to the storage barrel (3).

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