Single-screw extruder barrel temperature control device with high heating efficiency

Abstract

The utility model discloses a single screw extruder cylinder temperature control device with high heating efficiency, which relates to the technical field of single screw extruders, and comprises a first half cylinder and a second half cylinder, one end of the first half cylinder is fixedly provided with a first matching block, the other end of the first half cylinder is provided with a first matching groove, one end of the second half cylinder is fixedly provided with a second matching block, and the other end of the second half cylinder is provided with a second matching groove. A second matching groove is formed in the other end of the second half cylinder, a feeding hopper is arranged on the first half cylinder, and a discharging hopper is arranged on the second half cylinder. The first half cylinder and the second half cylinder are arranged, the first fastening bolt is arranged in the first bolt groove, so that the tail end of the first fastening bolt is installed in the first bolt hole in a threaded mode, the second fastening bolt is arranged in the second bolt groove, and the tail end of the second fastening bolt is installed in the second bolt hole in a threaded mode. The first half cylinder, the second half cylinder and the sealing plate are fixedly connected, and meanwhile disassembly and cleaning are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of single-screw extruders, in particular to a barrel temperature control device for a single-screw extruder with high heating efficiency. Background Art

[0002] Single-screw extruders are mainly used for extruding thermoplastic plastics such as soft and hard polyvinyl chloride and polyethylene. They can process a variety of plastic products, such as blown film, pipe extrusion, pressing plate, drawing ribbon, etc., and can also be used for melt granulation. The plastic extruder is designed advancedly, with high quality, good plasticization, and low energy consumption. It adopts involute gear drive, with the characteristics of low noise, stable operation, large bearing capacity, and long service life. As a common extruder device, single-screw extruders are used in the plastic processing industry.

[0003] Application No.: CN202120301987.6 discloses a barrel temperature control device for a single-screw extruder with high heating efficiency, including a main body. The top inner wall of the main body is fixedly connected with a mounting plate, the bottom outer wall of the mounting plate is fixedly connected with a heat preservation pipe, the inner wall of the heat preservation pipe is fixedly connected with a first heating coil, and the outer wall of the first heating coil away from the heat preservation pipe is fixedly connected with a first heat conduction pipe. By using materials with relatively small specific heat capacity and high heat conduction performance for the first heat conduction pipe, the second heat conduction pipe, and the heat conduction blade dragon piece, when plastic particles slide into the heating channel stirred by the heat conduction blade dragon piece through the feed hopper under their own gravity, the control board controls the power supply component installed inside the mounting plate. The utility model uses the method of heating electric wires for heating, controls the temperature of the heating pipe by adjusting the current size through the control board, adopts two layers of heating pipes inside and outside to increase the contact area between the heating surface and the raw materials, and effectively improves the heating efficiency.

[0004] However, when the above device is used, it is not convenient to clean the inside of the extruder, and it is easy to affect the working efficiency and quality of the extruder after a long time. Therefore, it is necessary to propose a barrel temperature control device for a single-screw extruder with high heating efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a barrel temperature control device for a single-screw extruder with high heating efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A barrel temperature control device for a single-screw extruder with high heating efficiency, comprising a first half-barrel and a second half-barrel. One end of the first half-barrel is fixedly installed with a first fitting block, and the other end of the first half-barrel is provided with a first fitting groove. One end of the second half-barrel is fixedly installed with a second fitting block, and the other end of the second half-barrel is provided with a second fitting groove. A feed hopper is arranged on the first half-barrel, and a discharge hopper is arranged on the second half-barrel. A pair of sealing plates are symmetrically arranged at both ends of the first half-barrel and the second half-barrel. A rotating cylinder is rotatably installed between the pair of sealing plates, and a screw blade is fixedly installed on the rotating cylinder.

[0008] Preferably, the first half-barrel and the second half-barrel are exactly the same, and the first half-barrel and the second half-barrel are centrosymmetrically arranged. The first fitting block is matched with the second fitting groove, and the second fitting block is matched with the first fitting groove. The first half-barrel and the second half-barrel are fixedly connected by a first fastening bolt;

[0009] Preferably, a plurality of first bolt holes are equidistantly and uniformly arranged on the first fitting block and the second fitting block. A plurality of first bolt grooves are equidistantly and uniformly arranged on the outer side walls of the first half-barrel and the second half-barrel. The first bolt holes and the first bolt grooves correspond one by one. The first fastening bolt is arranged in the first bolt groove, and the end of the first fastening bolt is threadedly installed in the first bolt hole;

[0010] For fixedly connecting the first half-barrel and the second half-barrel, place the first fastening bolt into the first bolt groove, so that the end of the first fastening bolt is threadedly installed in the first bolt hole, realizing the fixed connection of the first half-barrel and the second half-barrel, and at the same time facilitating disassembly.

[0011] Preferably, the sealing plate is fixedly connected to the first half-barrel and the second half-barrel by a second fastening bolt. A plurality of second bolt holes are symmetrically opened at both ends of the first half-barrel and the second half-barrel. A plurality of second bolt grooves are equidistantly and uniformly arranged on the outer side wall of the sealing plate. The second bolt holes and the second bolt grooves correspond one by one. The second fastening bolt is arranged in the second bolt groove, and the end of the second fastening bolt is threadedly installed in the second bolt hole;

[0012] For fixedly connecting the sealing plate to the first half-barrel and the second half-barrel, place the second fastening bolt into the second bolt groove, so that the end of the second fastening bolt is threadedly installed in the second bolt hole, realizing the fixed connection of the sealing plate to the first half-barrel and the second half-barrel, and at the same time facilitating disassembly.

[0013] Preferably, an external heating cavity is opened in both the first half-barrel and the second half-barrel, and a plurality of external heating tubes are fixedly installed in the external heating cavity;

[0014] Preferably, an internal heating pipe is fixedly installed inside the rotating cylinder. Both ends of the rotating cylinder rotatably penetrate through the sealing plate. One end of the rotating cylinder is coaxially and fixedly connected to a rotating shaft, and the rotating shaft is connected to an external driving structure.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting the first half cylinder and the second half cylinder, placing the first fastening bolt into the first bolt groove so that the end of the first fastening bolt is threadedly installed in the first bolt hole, and placing the second fastening bolt into the second bolt groove so that the end of the second fastening bolt is threadedly installed in the second bolt hole, the fixed connection of the first half cylinder, the second half cylinder and the sealing plate is realized. At the same time, it is also convenient to disassemble and clean.

[0017] 2. By setting the external heating pipe and the internal heating pipe, after the material enters the first half cylinder and the second half cylinder from the feed hopper, the external heating pipe and the internal heating pipe heat the material simultaneously, making the heating of the material more uniform, and then discharging from the discharge hopper. Description of the Drawings

[0018] Figure 1 is a schematic external structure diagram of a temperature control device for the barrel of a single-screw extruder with high heating efficiency proposed by the utility model;

[0019] Figure 2 is an exploded structure diagram of a temperature control device for the barrel of a single-screw extruder with high heating efficiency proposed by the utility model;

[0020] Figure 3 is a schematic sectional structure diagram of the first half cylinder and the second half cylinder of the utility model;

[0021] Figure 4 is a schematic sectional structure diagram of the rotating cylinder of the utility model.

[0022] In the figure: 1. First half cylinder; 11. First fitting block; 12. First fitting groove; 13. Feed hopper; 2. Second half cylinder; 21. Second fitting block; 22. Second fitting groove; 23. Discharge hopper; 3. Sealing plate; 4. Rotating cylinder; 41. Internal heating pipe; 42. Rotating shaft; 5. Auger blade; 6. First fastening bolt; 61. First bolt hole; 62. First bolt groove; 7. Second fastening bolt; 71. Second bolt hole; 72. Second bolt groove; 8. External heating cavity; 81. External heating pipe. Detailed Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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, and therefore should not be construed as a limitation to the present utility model.

[0025] Referring to Figures 1-4 , a temperature control device for the barrel of a single-screw extruder with high heating efficiency, comprising a first half barrel 1 and a second half barrel 2. One end of the first half barrel 1 is fixedly installed with a first fitting block 11, and the other end of the first half barrel 1 is provided with a first fitting groove 12. One end of the second half barrel 2 is fixedly installed with a second fitting block 21, and the other end of the second half barrel 2 is provided with a second fitting groove 22. A feed hopper 13 is provided on the first half barrel 1, and a discharge hopper 23 is provided on the second half barrel 2. A pair of sealing plates 3 are symmetrically arranged at both ends of the first half barrel 1 and the second half barrel 2, and a rotating cylinder 4 is rotatably installed between the pair of sealing plates 3. A screw blade 5 is fixedly installed on the rotating cylinder 4.

[0026] The first half barrel 1 and the second half barrel 2 are exactly the same, and the first half barrel 1 and the second half barrel 2 are symmetrically arranged about the center. The first fitting block 11 is matched with the second fitting groove 22, and the second fitting block 21 is matched with the first fitting groove 12. The first half barrel 1 and the second half barrel 2 are fixedly connected by a first fastening bolt 6.

[0027] A number of first bolt holes 61 are evenly arranged at equal intervals on the first fitting block 11 and the second fitting block 21. A number of first bolt grooves 62 are evenly arranged at equal intervals on the outer side walls of the first half barrel 1 and the second half barrel 2. The first bolt holes 61 correspond to the first bolt grooves 62 one by one. The first fastening bolt 6 is arranged in the first bolt groove 62, and the end of the first fastening bolt 6 is threadedly installed in the first bolt hole 61.

[0028] The sealing plate 3 is fixedly connected to the first half barrel 1 and the second half barrel 2 by a second fastening bolt 7. A number of second bolt holes 71 are symmetrically arranged at both ends of the first half barrel 1 and the second half barrel 2. A number of second bolt grooves 72 are evenly arranged at equal intervals on the outer side wall of the sealing plate 3. The second bolt holes 71 correspond to the second bolt grooves 72 one by one. The second fastening bolt 7 is arranged in the second bolt groove 72, and the end of the second fastening bolt 7 is threadedly installed in the second bolt hole 71.

[0029] Outer heating cavities 8 are provided in both the first half barrel 1 and the second half barrel 2, and a number of outer heating tubes 81 are fixedly installed in the outer heating cavities 8.

[0030] An internal heating pipe 41 is fixedly installed inside the rotating cylinder 4. Both ends of the rotating cylinder 4 rotatably penetrate through the sealing plate 3. One end of the rotating cylinder 4 is coaxially and fixedly connected to a rotating shaft 42, and the rotating shaft 42 is connected to an external driving structure.

[0031] In the present utility model, after the material enters the first half cylinder 1 and the second half cylinder 2 from the feed hopper 13, the external heating pipe 81 and the internal heating pipe 41 heat the material simultaneously, making the heating of the material more uniform. The external driving structure drives the rotating cylinder 4 to rotate through the rotating shaft 42, causing the auger blade 5 to rotate synchronously, and then discharging from the discharge hopper 23. After the work is completed, by removing the first fastening bolt 6 and the second fastening bolt 7, the first half cylinder 1, the second half cylinder 2, and the sealing plate 3 are separated, facilitating a comprehensive cleaning of the device.

[0032] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A single-screw extruder barrel temperature control device with high heating efficiency, comprising a first half barrel (1) and a second half barrel (2), characterized in that: A first matching block (11) is fixedly mounted on one end of the first half-cylinder (1), and a first matching groove (12) is provided on the other end of the first half-cylinder (1); a second matching block (21) is fixedly mounted on one end of the second half-cylinder (2), and a second matching groove (22) is provided on the other end of the second half-cylinder (2); a feed hopper (13) is provided on the first half-cylinder (1), and a discharge hopper (23) is provided on the second half-cylinder (2); a pair of sealing plates (3) are symmetrically arranged at both ends of the first half-cylinder (1) and the second half-cylinder (2); a rotating cylinder (4) is rotatably mounted between the pair of sealing plates (3), and an auger blade (5) is fixedly mounted on the rotating cylinder (4).

2. A single screw extruder barrel temperature control device with high heating efficiency according to claim 1, characterized in that: The first half cylinder (1) and the second half cylinder (2) are completely identical, the first half cylinder (1) and the second half cylinder (2) are centrally symmetrically arranged, the first matching block (11) matches with the second matching groove (22), the second matching block (21) matches with the first matching groove (12), and the first half cylinder (1) and the second half cylinder (2) are fixedly connected by a first fastening bolt (6).

3. A single screw extruder barrel temperature control device with high heating efficiency according to claim 2, characterized in that: A plurality of first bolt holes (61) are evenly and equidistantly arranged on the first matching block (11) and the second matching block (21); a plurality of first bolt grooves (62) are evenly and equidistantly opened on the outer side walls of the first half cylinder (1) and the second half cylinder (2); the first bolt holes (61) correspond to the first bolt grooves (62) one by one; the first fastening bolt (6) is arranged in the first bolt groove (62); and the end of the first fastening bolt (6) is threadedly installed in the first bolt hole (61).

4. A single screw extruder barrel temperature control device with high heating efficiency according to claim 1, characterized in that: The sealing plate (3) is fixedly connected to the first half cylinder (1) and the second half cylinder (2) by means of a second fastening bolt (7); a plurality of second bolt holes (71) are symmetrically provided at both ends of the first half cylinder (1) and the second half cylinder (2); a plurality of second bolt grooves (72) are evenly and equidistantly provided on the outer wall of the sealing plate (3); the second bolt holes (71) correspond to the second bolt grooves (72) one by one; the second fastening bolt (7) is arranged in the second bolt groove (72); and the end of the second fastening bolt (7) is threadedly installed in the second bolt hole (71).

5. A single screw extruder barrel temperature control device with high heating efficiency according to claim 1, characterized in that: The first half cylinder (1) and the second half cylinder (2) are both provided with an external heating cavity (8), and a plurality of external heating tubes (81) are fixedly installed in the external heating cavity (8).

6. A single screw extruder barrel temperature control device with high heating efficiency according to claim 1, characterized in that: An internal heating tube (41) is fixedly installed in the rotating cylinder (4), both ends of the rotating cylinder (4) rotate to penetrate the sealing plate (3), one end of the rotating cylinder (4) is coaxially fixedly connected to a rotating shaft (42), and the rotating shaft (42) is connected to an external driving structure.

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