Twin-screw extruder for PE plastic bottle production

Abstract

The utility model discloses a double-screw extruder for producing a PE plastic bottle, and relates to the technical field of double-screw extruders. The double-screw extruder for PE plastic bottle production comprises a base, a double-screw extruder body is fixedly installed on the base, and an extruder feeding hopper is fixedly connected to the double-screw extruder body; the feeding mechanism comprises a connecting box body, and a mounting plate is fixedly connected to the interior of the extruder feeding hopper; a rotating shaft is rotationally connected into the mounting plate, a plugging plate is fixedly connected to the surface of the rotating shaft, two through grooves are formed in the surface of the mounting plate, a plurality of fan blades are fixedly connected to the surface of the rotating shaft, and through rotation of the plugging plate and the fan blades, the plugging condition of the plugging plate on the through grooves is conveniently adjusted, and the feeding speed of plastic particles is conveniently adjusted; and the plastic particles can be conveniently and stably fed, the plastic particles are prevented from being blocked in the feeding hopper of the extruder to affect the processing of the plastic particles by the double-screw extruder, and the production quality of PE plastic bottles is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, and particularly relates to a twin-screw extruder for the production of PE plastic bottles. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the forming and processing of extruded products. The Chinese utility model patent, with the authorization announcement number "CN210436584U", discloses a twin-screw extruder for the production of plastic bottles, including an extrusion barrel and support feet. There are two support feet, and the two support feet are vertically fixed on both sides of the lower end of the extrusion barrel. A screw is horizontally installed in the extrusion barrel through a rotating shaft. There are two screws, and the two screws are located on the front and back sides inside the extrusion barrel. A high-frequency coil is fixedly wound around the outer surface of the extrusion barrel, and the high-frequency coil is connected to a high-frequency transformer. A feeding port is connected to the upper left side of the extrusion barrel, and the feeding port is communicated with the inside of the extrusion barrel. A driving motor is fixed on the left outer wall of the extrusion barrel.

[0003] The above technical solution fixes a high-frequency coil around the outside of the extrusion barrel. When using the extruder, the high-frequency coil can heat the inner wall of the extrusion barrel and the screw made of metal material, so that the inner wall of the extrusion barrel and the surface of the screw both have a certain temperature, which has a good heat preservation effect on the melted plastic and can prevent the plastic raw material from cooling and solidifying in the extrusion barrel. However, the above technical solution still has certain defects. When a large amount of plastic raw material is poured into the feeding port, it is easy to cause the feeding port to be blocked, resulting in uneven feeding of the extruder, affecting the feeding effect, and further affecting the quality of PE plastic bottles. Therefore, the utility model proposes a new solution. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a twin-screw extruder for the production of PE plastic bottles, which can solve the problems that when a large amount of plastic raw material is poured into the feeding port, it is easy to cause the feeding port to be blocked, resulting in uneven feeding of the extruder, affecting the feeding effect, and further affecting the quality of PE plastic bottles.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A twin-screw extruder for the production of PE plastic bottles, including a base, a twin-screw extruder is fixedly installed on the base, and an extruder hopper is fixedly connected to the twin-screw extruder;

[0006] A feeding mechanism is arranged inside the extruder hopper. The feeding mechanism includes a connecting box body, the connecting box body is fixedly connected to the surface of the extruder hopper, and a mounting plate is fixedly connected inside the extruder hopper;

[0007] Among them, the mounting plate extends to the inside of the connecting box body. A rotating shaft is rotatably connected inside the mounting plate. A second driving motor is fixedly connected to the mounting plate. The output end of the second driving motor rotatably penetrates the mounting plate and is fixedly connected with a pulley. A pulley is fixedly connected to the surface of the rotating shaft. A belt is sleeved on the surfaces of the two pulleys for transmission.

[0008] Among them, a sealing plate is fixedly connected to the surface of the rotating shaft. Two through grooves are formed on the surface of the mounting plate. A plurality of fan blades are fixedly connected to the surface of the rotating shaft.

[0009] Preferably, a first driving motor is fixedly connected to the base. The output end of the first driving motor is fixedly connected with a second sprocket. A screw rod is rotatably connected inside the twin-screw extruder.

[0010] Among them, a first spiral blade, a second spiral blade and a third spiral blade are fixedly connected to the surface of the screw rod. One end of the screw rod extends out of the twin-screw extruder and is fixedly connected with a first sprocket. A chain is sleeved on the surfaces of the second sprocket and the first sprocket for transmission.

[0011] Preferably, the number of the screw rod, the first sprocket, the first spiral blade, the second spiral blade and the third spiral blade is two, which are respectively arranged inside the twin-screw extruder.

[0012] Preferably, the thread pitch of the first spiral blade, the second spiral blade and the third spiral blade is shortened in sequence.

[0013] Preferably, two heating plates are fixedly connected inside the twin-screw extruder. A heat preservation plate is fixedly connected to the surface of the twin-screw extruder.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. For the twin-screw extruder for PE plastic bottle production, through the rotation of the sealing plate and the fan blades, it is convenient to adjust the blocking situation of the sealing plate to the through grooves, convenient to adjust the feeding speed of plastic particles, convenient for the plastic particles to be fed stably, prevent a large amount of plastic particles from blocking inside the feed hopper of the extruder at one time, affect the processing of plastic particles by the twin-screw extruder, and the stable feeding can ensure the uniform and continuous flow of plastic raw materials in the extruder, thereby avoiding the problem of unstable quality of plastic products caused by uneven feeding and improving the production quality of PE plastic bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further illustrates the utility model with reference to the drawings and embodiments:

[0017] Figure 1 It is a schematic structural diagram of a twin-screw extruder for PE plastic bottle production of the utility model;

[0018] Figure 2 Schematic diagram of the heating plate of the present utility model;

[0019] Figure 3 Schematic diagram of the screw of the present utility model;

[0020] Figure 4 Schematic diagram of the feed hopper of the extruder of the present utility model.

[0021] Reference numerals: 1, base; 2, twin-screw extruder; 3, feed hopper of the extruder; 4, connecting box body; 5, heating plate; 6, heat preservation plate; 7, screw; 8, first sprocket; 9, first driving motor; 10, second sprocket; 11, first spiral blade; 12, second spiral blade; 13, third spiral blade; 14, chain; 15, mounting plate; 16, second driving motor; 17, rotating shaft; 18, pulley; 19, belt; 20, through groove; 21, plugging plate; 22, fan blade. Detailed implementation manners

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, so it cannot be understood as a limitation on the present utility model.

[0024] In the description of the present utility model, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If the first and second are described only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0025] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0026] Please refer to Figures 1-4, the present utility model provides a technical solution: a twin-screw extruder for the production of PE plastic bottles, including a base 1, on which a twin-screw extruder 2 is fixedly installed. A feed hopper 3 is fixedly connected to the twin-screw extruder 2. A feeding mechanism is arranged inside the feed hopper 3 of the extruder. The feeding mechanism includes a connecting box body 4, which is fixedly connected to the surface of the feed hopper 3 of the extruder. Inside the feed hopper 3 of the extruder, a mounting plate 15 is fixedly connected, and the mounting plate 15 extends into the connecting box body 4. Inside the mounting plate 15, a rotating shaft 17 is rotatably connected. On the mounting plate 15, a second driving motor 16 is fixedly connected. The output end of the second driving motor 16 rotates through the mounting plate 15 and is fixedly connected with a pulley 18. On the surface of the rotating shaft 17, a pulley 18 is fixedly connected. A belt 19 is sleeved on the surfaces of the two pulleys 18. On the surface of the rotating shaft 17, a sealing plate 21 is fixedly connected. Two through grooves 20 are opened on the surface of the mounting plate 15. On the surface of the rotating shaft 17, a plurality of fan blades 22 are fixedly connected.

[0027] A first driving motor 9 is fixedly connected to the base 1. The output end of the first driving motor 9 is fixedly connected with a second sprocket 10. Inside the twin-screw extruder 2, a screw 7 is rotatably connected. On the surface of the screw 7, a first spiral blade 11, a second spiral blade 12, and a third spiral blade 13 are fixedly connected. One end of the screw 7 extends out of the twin-screw extruder 2 and is fixedly connected with a first sprocket 8. A chain 14 is sleeved on the surfaces of the second sprocket 10 and the first sprocket 8. The number of the screw 7, the first sprocket 8, the first spiral blade 11, the second spiral blade 12, and the third spiral blade 13 is two, which are respectively arranged inside the twin-screw extruder 2.

[0028] The thread pitch of the first spiral blade 11, the second spiral blade 12, and the third spiral blade 13 decreases in sequence. Two heating plates 5 are fixedly connected inside the twin-screw extruder 2. A heat preservation plate 6 is fixedly connected to the surface of the twin-screw extruder 2.

[0029] When using this device, first add a certain amount of plastic particles inside the feed hopper 3 of the extruder to make them fall onto the mounting plate 15. Start the second driving motor 16 to drive the pulley 18 to rotate. The pulley 18 drives the belt 19 to rotate, and then drives the rotating shaft 17 to rotate. The rotating shaft 17 drives the sealing plate 21 and the fan blades 22 to rotate. During the rotation of the fan blades 22, the through grooves 20 are blocked and opened, facilitating the plastic particles to fall from the through grooves 20 into the twin-screw extruder 2. During the falling process of the plastic particles, when the rotating shaft 17 drives the fan blades 22 to rotate, the plastic particles are scattered, facilitating the stable feeding of the plastic particles. And by controlling the blocking angle of the sealing plate 21 for the through grooves 20, the feeding speed can be controlled to prevent a large amount of plastic particles from blocking inside the feed hopper 3 of the extruder at one time, affecting the processing of the plastic particles by the twin-screw extruder 2.

[0030] When plastic particles enter the interior of the twin-screw extruder 2, start the first drive motor 9 to drive the second sprocket 10 to rotate. The second sprocket 10 drives the chain 14 to rotate, and the chain 14 drives the first sprocket 8 and the screw 7 to rotate. During the rotation of the screw 7, it drives the first spiral blade 11, the second spiral blade 12, and the third spiral blade 13 to rotate. Since the thread pitches of the first spiral blade 11, the second spiral blade 12, and the third spiral blade 13 are shortened in sequence, it is convenient to extrude the plastic particles during the processing, which helps to eliminate the bubbles and excessive impurities in the plastic, thereby improving the production efficiency and quality.

[0031] At the same time, start the heating plate 5 to heat the plastic particles. Heating can improve the fluidity and stability of the plastic, make the extrusion forming smoother, and improve the production efficiency.

[0032] Insulate the twin-screw extruder 2 through the heat preservation plate 6. The heat preservation plate 6 can effectively isolate the heat transfer, reduce the energy consumption, thereby maintaining the temperature stability of the extruder during the production process, improving the production efficiency, and ensuring the consistency and stability of the product quality.

[0033] Furthermore, through the rotation of the blocking plate 21 and the fan blade 22, it is convenient to adjust the blocking situation of the blocking plate 21 for the through groove 20, convenient to adjust the feeding speed of the plastic particles, convenient for the plastic particles to be fed stably, preventing a large amount of plastic particles from blocking inside the feed hopper 3 of the extruder at one time, affecting the processing of the plastic particles by the twin-screw extruder 2. Stable feeding can ensure the uniform and continuous flow of the plastic raw material in the extruder, thereby avoiding the problem of unstable quality of plastic products caused by uneven feeding and improving the production quality of PE plastic bottles.

[0034] Heat the plastic particles through the heating plate 5 and insulate the twin-screw extruder 2 through the heat preservation plate 6. Heating can improve the fluidity and stability of the plastic, make the extrusion forming smoother, and improve the production efficiency. The heat preservation plate 6 can effectively isolate the heat transfer, reduce the energy consumption, thereby maintaining the temperature stability of the twin-screw extruder 2 during the production process and ensuring the consistency of the quality of PE plastic bottles.

[0035] Working principle: When using this device, first add a certain amount of plastic particles inside the feed hopper 3 of the extruder, so that they fall onto the mounting plate 15. Start the second driving motor 16 to drive the pulley 18 to rotate. The pulley 18 drives the belt 19 to rotate, and then drives the rotating shaft 17 to rotate. The rotating shaft 17 drives the sealing plate 21 and the fan blade 22 to rotate. During the rotation of the fan blade 22, the through groove 20 is blocked and opened, facilitating the plastic particles to fall from the through groove 20 into the internal of the twin-screw extruder 2. During the falling process of the plastic particles, the rotating shaft 17 drives the fan blade 22 to rotate and disperse the plastic particles, facilitating the stable feeding of the plastic particles. And by controlling the blocking angle of the sealing plate 21 for the through groove 20, it is convenient to control the feeding speed, preventing a large amount of plastic particles from blocking inside the feed hopper 3 of the extruder at one time, which affects the processing of the plastic particles by the twin-screw extruder 2.

[0036] When the plastic particles enter the internal of the twin-screw extruder 2, start the first driving motor 9 to drive the second sprocket 10 to rotate. The second sprocket 10 drives the chain 14 to rotate. The chain 14 drives the first sprocket 8 and the screw 7 to rotate. During the rotation of the screw 7, it drives the first spiral blade 11, the second spiral blade 12 and the third spiral blade 13 to rotate. Since the thread pitches of the first spiral blade 11, the second spiral blade 12 and the third spiral blade 13 are shortened in sequence, it is convenient to extrude the plastic particles during the processing, which helps to eliminate the bubbles and excessive impurities in the plastic, thereby improving the production efficiency and quality.

[0037] At the same time, start the heating plate 5 to heat the plastic particles. Heating can improve the fluidity and stability of the plastic, make the extrusion forming smoother, and improve the production efficiency.

[0038] Insulate the twin-screw extruder 2 through the heat insulation plate 6. The heat insulation plate 6 can effectively isolate the heat transfer, reduce the energy consumption, thereby maintaining the temperature stability of the extruder during the production process, improving the production efficiency, and ensuring the consistency and stability of the product quality.

[0039] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A twin-screw extruder for producing PE plastic bottles, characterized in that: It comprises a base (1), a twin-screw extruder (2) is fixedly mounted on the base (1), and an extruder feed hopper (3) is fixedly connected to the twin-screw extruder (2); A feeding mechanism, the feeding mechanism is arranged inside the extruder feed hopper (3), the feeding mechanism comprises a connecting box (4), the connecting box (4) is fixedly connected to the surface of the extruder feed hopper (3), and a mounting plate (15) is fixedly connected inside the extruder feed hopper (3); The mounting plate (15) extends to the interior of the connecting box (4), the interior of the mounting plate (15) is rotatably connected to a rotating shaft (17), a second drive motor (16) is fixedly connected to the mounting plate (15), an output end of the second drive motor (16) rotatably passes through the mounting plate (15) and is fixedly connected to a pulley (18), a surface of the rotating shaft (17) is fixedly connected to a pulley (18), and a belt (19) is connected to the surfaces of the two pulleys (18); A sealing plate (21) is fixedly connected to the surface of the rotating shaft (17), two through grooves (20) are provided on the surface of the mounting plate (15), and a plurality of fan blades (22) are fixedly connected to the surface of the rotating shaft (17).

2. A twin-screw extruder for producing PE plastic bottles according to claim 1, characterized in that: The base (1) is fixedly connected to a first drive motor (9), an output end of the first drive motor (9) is fixedly connected to a second sprocket (10), and the interior of the twin-screw extruder (2) is rotatably connected to a screw (7); The surface of the screw (7) is fixedly connected to a first spiral blade (11), a second spiral blade (12) and a third spiral blade (13); one end of the screw (7) extends out of the twin-screw extruder (2) and is fixedly connected to a first sprocket (8); and the surfaces of the second sprocket (10) and the first sprocket (8) are transmission sleeved with a chain (14).

3. A twin-screw extruder for producing PE plastic bottles according to claim 1, characterized in that: The screw (7), the first sprocket (8), the first spiral blade (11), the second spiral blade (12), and the third spiral blade (13) are each two in number and are respectively arranged inside the twin-screw extruder (2).

4. A twin-screw extruder for producing PE plastic bottles according to claim 2, characterized in that: The thread pitches of the first spiral blade (11), the second spiral blade (12) and the third spiral blade (13) are shortened successively.

5. A twin-screw extruder for producing PE plastic bottles according to claim 1, characterized in that: Two heating plates (5) are fixedly connected inside the twin-screw extruder (2), and a heat-insulating plate (6) is fixedly connected to the surface of the twin-screw extruder (2).

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