Accurate temperature control twin-screw extruder for producing silane crosslinked polyethylene insulated cable material
Through the design of the precise temperature-controlled twin-screw extruder, the problem of uncontrollable raw material filling amount is solved, and the stable production of silane cross-linked polyethylene insulated cable materials is achieved, and the product quality and uniformity are improved.
Patent Information
- Application Number
- CN202421734309.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the prior art, when silane crosslinked polyethylene insulated cable materials are produced, the amount of raw material filling cannot be controlled, resulting in unstable screw speed, affecting the extrusion speed and product uniformity, and defects such as bubbles, stripes or unevenness may occur.
The precise temperature-controlled twin-screw extruder is adopted to control the feeding amount of raw materials by driving the agitating shaft and rotating plate by driving the motor, and use multiple heating barrels to perform precise temperature control in segments to achieve accurate filling and temperature control of raw materials.
It realizes precise control of the feeding amount of raw materials, stabilizes the screw speed, and improves the extrusion uniformity of cable materials and product quality.
Smart Images
Figure CN223211866U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable material production, and more specifically to a precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials. Background Art
[0002] A twin-screw extruder is an important piece of plastic processing equipment, widely used in the processing of polymer materials such as plastics and rubber. It utilizes two parallel rotating screws to melt and continuously extrude solid materials through a specific process.
[0003] When a twin-screw extruder is used to extrude silane cross-linked polyethylene insulated cable materials, a filling tank is installed on the top of the twin-screw extruder to inject a variety of raw materials into the twin-screw extruder. The materials are produced through screw extrusion and heating. However, when the raw materials of the silane cross-linked polyethylene insulated cable materials are injected into the twin-screw extruder through the filling tank, the injection amount of the injected raw materials cannot be controlled. It is easy to inject too much raw material at one time, which will cause the load of the screw and barrel to increase sharply, and may cause the screw speed to be unstable, thereby affecting the extrusion speed and the uniformity of the product, and also cause defects on the product surface, such as bubbles, stripes or unevenness, resulting in defective products. Therefore, a precise temperature-controlled twin-screw extruder for the production of silane cross-linked polyethylene insulated cable materials is needed, which can control the injection amount of raw materials inside the twin-screw extruder.
[0004] In view of this, the utility model provides a precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials. Utility Model Content
[0005] The purpose of the utility model is to solve the above shortcomings and provide a precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials, which can control the filling amount of raw materials inside the twin-screw extruder.
[0006] The rotating plate is used to rotate at different speeds on the top of the partition plate to control the amount of raw materials added to the installation sleeve. At the same time, multiple heating barrels can accurately control the temperature of the extruded raw materials in sections in the twin-screw group.
[0007] Therefore, the utility model provides a precise temperature-controlled twin-screw extruder for the production of silane cross-linked polyethylene insulated cable materials, comprising an extruder body, a power group installed on the top of the extruder body, a mounting sleeve fixedly installed on the side wall of the power group, a twin-screw group for extruding raw materials installed inside the mounting sleeve, a feed port for filling raw materials on the top of the mounting sleeve, a feeding tank for mixing multiple raw materials added on the top of the feed port, an injection port for injecting raw materials on the top of the feeding tank, a discharge port connected to the feed port on the bottom of the feeding tank, a partition plate for controlling the amount of raw material filling fixedly installed on the bottom of the inner wall of the discharge port, a mixing and conveying component for multiple raw materials installed inside the feeding tank, and a heating component for precisely heating the raw materials at a precise temperature connected to the outer surface of the twin-screw group.
[0008] As a further improvement of the present technical solution, the conveying assembly includes a drive motor installed on the top of the feeding tank, the output shaft of the drive motor passes through the interior of the feeding tank and is equipped with a stirring shaft for mixing and conveying multiple raw materials, and a rotating plate is fixedly installed at the bottom of the stirring shaft.
[0009] As a further improvement of this technical solution, the rotating plate is installed above the partition plate, and the partition plate and the rotating plate are arranged in a fan shape. The rotating plate rotates on the top of the partition plate to control the amount of raw materials flowing into the feed port below the partition plate.
[0010] As a further improvement of the present technical solution, the heating assembly includes a heating barrel installed on the other side of the mounting sleeve by bolts, a heating wire that can be powered on to generate heat is installed inside the heating barrel, and a power port for energizing the heating wire is installed outside the heating barrel. The heating barrel is sleeved on the outside of the twin-screw group to heat the raw materials between the heating barrel and the twin-screw group.
[0011] As a further improvement of the present technical solution, a plurality of heating barrels are provided, and the plurality of heating barrels are installed on the outside of the twin-screw group by bolt splicing. The plurality of heating barrels can be adjusted to different temperatures respectively to accurately control the temperature of the raw materials in the heating barrels.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] In the precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials, when adding raw materials for cable material production, a variety of different raw materials are added to the interior of the feeding tank through multiple injection ports on the top of the feeding tank, and the driving motor drives the stirring shaft and the rotating plate at the bottom of the stirring shaft to rotate together. When the rotating plate rotates, the feeding port at the bottom of the partition plate is exposed to different sizes. By adjusting the rotation speed of the driving motor, the rotating plate rotates at different speeds, and the amount of raw materials flowing into the feeding port at the bottom of the partition plate is controlled, thereby achieving the effect of controlling the amount of raw materials added to the extruder. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be described in more detail below by way of examples with reference to the accompanying drawings, in which:
[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0016] Figure 2 This is a schematic structural diagram of the filling tank of the utility model;
[0017] Figure 3 This is a schematic diagram of the heating component structure of the present utility model;
[0018] Figure 4 This is an enlarged schematic diagram of point A of the present invention.
[0019] The meaning of each number in the figure is:
[0020] 1. Extruder body; 2. Power unit; 3. Mounting sleeve; 31. Feed port; 4. Twin-screw assembly; 5. Feeding tank; 51. Injection port; 52. Discharge port; 54. Partition plate; 6. Conveying assembly; 601. Drive motor; 602. Stirring shaft; 603. Rotating plate; 7. Heating assembly; 701. Heating barrel; 702. Heating wire; 703. Power port. DETAILED DESCRIPTION
[0021] When a twin-screw extruder is used to extrude silane cross-linked polyethylene insulated cable materials, a filling tank is installed on the top of the twin-screw extruder to inject a variety of raw materials into the twin-screw extruder. The materials are produced through screw extrusion and heating. However, when the raw materials of the silane cross-linked polyethylene insulated cable materials are injected into the twin-screw extruder through the filling tank, the injection amount of the injected raw materials cannot be controlled. It is easy to inject too much raw material at one time, which will cause the load of the screw and barrel to increase sharply, and may cause the screw speed to be unstable, thereby affecting the extrusion speed and the uniformity of the product, and also cause defects on the product surface, such as bubbles, stripes or unevenness, resulting in defective products. Therefore, a precise temperature-controlled twin-screw extruder for the production of silane cross-linked polyethylene insulated cable materials is needed, which can control the injection amount of raw materials inside the twin-screw extruder.
[0022] like Figure 1-4 As shown, the device includes an extruder body 1, a power group 2 is installed on the top of the extruder body 1, a mounting sleeve 3 is fixedly installed on the side wall of the power group 2, a twin-screw group 4 for extruding raw materials is installed inside the mounting sleeve 3, a feed port 31 for filling raw materials is provided on the top of the mounting sleeve 3, a feeding tank 5 for mixing multiple raw materials is installed on the top of the feed port 31, a filling port 51 for injecting raw materials is provided on the top of the feeding tank 5, a discharge port 52 connected to the feed port 31 is provided at the bottom of the feeding tank 5, a partition plate 54 for controlling the amount of raw material filling is fixedly installed on the bottom of the inner wall of the discharge port 52, a mixing and conveying component 6 for multiple raw materials is installed inside the feeding tank 5, and a heating component 7 for accurately heating the raw materials is sleeved on the outer surface of the twin-screw group 4;
[0023] First, the specific structure of the conveying component 6 is disclosed. The conveying component 6 includes a driving motor 601 installed on the top of the feeding tank 5. The output shaft of the driving motor 601 passes through the interior of the feeding tank 5 and is installed with a stirring shaft 602 for mixing and conveying multiple raw materials. A rotating plate 603 is fixedly installed at the bottom of the stirring shaft 602.
[0024] The rotating plate 603 is installed above the partition plate 54. The partition plate 54 and the rotating plate 603 are arranged in a fan shape. The rotating plate 603 rotates on the top of the partition plate 54 to control the amount of raw materials flowing into the feed port 31 below the partition plate 54.
[0025] The improvement of this embodiment is that: when the raw materials for cable material production are added, a variety of different raw materials are added to the interior of the feeding tank 5 through the multiple injection ports 51 on the top of the feeding tank 5, and the driving motor 601 drives the stirring shaft 602 and the rotating plate 603 at the bottom of the stirring shaft 602 to rotate to mix the different raw materials. The raw materials will naturally fall into the feed port 31 at the bottom of the partition plate 54 and be extruded through the twin-screw group 4. The rotating plate 603 rotates at different speeds and angles to make the time and size of the partition plate 54 leaking out of the feed port 31 different, thereby controlling the amount of raw material added, achieving the effect of controlling the amount of raw material added, and solving the problem in the prior art that too much raw material is added at one time, resulting in unstable rotation speed of the twin-screw group 4, thereby affecting the extrusion speed and uniformity of the cable material.
[0026] Since the twin screw group 4 in the prior art rotates inside the barrel, the heating temperature in the barrel is uniform and it is impossible to accurately adjust different temperatures, Figure 3-Figure 4 A second embodiment of the present invention is shown.
[0027] The specific structure of the heating assembly 7 is disclosed again. The heating assembly 7 includes a heating barrel 701 mounted on the other side of the mounting sleeve 3 via bolts. A heating wire 702 that can generate heat when powered is installed inside the heating barrel 701. A power supply port 703 for energizing the heating wire 702 is installed on the outside of the heating barrel 701. The heating barrel 701 is sleeved on the outside of the twin-screw group 4 to heat the raw material between the heating barrel 701 and the twin-screw group 4. Multiple heating barrels 701 are provided, and multiple heating barrels 701 are spliced and mounted on the outside of the twin-screw group 4 via bolts. The multiple heating barrels 701 can be adjusted to different temperatures, thereby accurately controlling the temperature of the raw material in the heating barrel 701.
[0028] The improvement of this embodiment is that: when the raw materials enter the heating barrel 701 and the twin-screw group 4 for heating and extrusion, multiple different heating barrels 701 are spliced and installed on the outside of the twin-screw group 4. Each heating barrel 701 can be regulated by connecting the current to the power port 703 to make the heating wire 702 emit different temperatures, thereby achieving the effect of accurately adjusting the different temperatures of different extrusion sections of the extruder twin-screw group 4, making the cable material more uniform during extrusion.
[0029] In summary, the working principle of this solution is as follows:
[0030] When adding raw materials for cable material production, a variety of different raw materials are added to the interior of the feeding tank 5 through the multiple injection ports 51 on the top of the feeding tank 5. The driving motor 601 drives the stirring shaft 602 and the rotating plate 603 at the bottom of the stirring shaft 602 to rotate together. When the rotating plate 603 rotates, the feed port 31 at the bottom of the partition plate 54 will be exposed to different sizes. By adjusting the rotation speed of the driving motor 601, the rotating plate 603 can rotate at different speeds, and the amount of raw materials flowing into the feed port 31 at the bottom of the partition plate 54 can be controlled, thereby achieving the effect of controlling the amount of raw materials added to the extruder.
[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials, comprising an extruder body (1), characterized in that: A power group (2) is installed on the top of the extruder body (1), a mounting sleeve (3) is fixedly installed on the side wall of the power group (2), a twin-screw group (4) for extruding raw materials is installed inside the mounting sleeve (3), a feed port (31) for filling raw materials is provided on the top of the mounting sleeve (3), a feeding tank (5) for mixing multiple raw materials is installed on the top of the feed port (31), a material injection port (51) for injecting raw materials is provided on the top of the feeding tank (5), a discharge port (52) connected to the feed port (31) is provided at the bottom of the feeding tank (5), a partition plate (54) for controlling the amount of raw material filling is fixedly installed on the bottom of the inner wall of the discharge port (52), a mixing and conveying component (6) for multiple raw materials is installed inside the feeding tank (5), and a heating component (7) for accurately heating the raw materials is sleeved on the outer surface of the twin-screw group (4).
2. The precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials according to claim 1, characterized in that: The conveying assembly (6) includes a driving motor (601) installed on the top of the feeding tank (5), the output shaft of the driving motor (601) passes through the interior of the feeding tank (5) and is equipped with a stirring shaft (602) for mixing and conveying multiple raw materials, and a rotating plate (603) is fixedly installed on the bottom of the stirring shaft (602).
3. The precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials according to claim 2, characterized in that: The rotating plate (603) is installed above the partition plate (54), and the partition plate (54) and the rotating plate (603) are arranged in a fan shape. The rotating plate (603) rotates on the top of the partition plate (54) to control the amount of raw materials flowing into the feed port (31) below the partition plate (54).
4. The precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials according to claim 1, characterized in that: The heating assembly (7) includes a heating barrel (701) mounted on the other side of the mounting sleeve (3) by means of bolts, a heating wire (702) capable of generating heat by being energized is mounted inside the heating barrel (701), and a power supply port (703) for energizing the heating wire (702) is mounted outside the heating barrel (701), and the heating barrel (701) is sleeved on the outside of the twin-screw group (4) to heat the raw materials between the heating barrel (701) and the twin-screw group (4).
5. The precise temperature-controlled twin-screw extruder for producing silane cross-linked polyethylene insulated cable materials according to claim 4, characterized in that: The heating barrels (701) are provided in plurality, and the plurality of heating barrels (701) are installed on the outside of the twin-screw group (4) by bolt splicing. The plurality of heating barrels (701) can be adjusted to different temperatures respectively, and the raw materials in the heating barrels (701) can be precisely temperature-controlled.