Twin screw extruder for fireproof pbt material

Abstract

The utility model relates to fireproof PBT material production technical field, and disclose a fireproof PBT material's double screw extruder, including extruder host body, and extruder host body is equipped with heating mechanism and double screw extrusion mechanism, and extruder host body includes machine cylinder, and the assembly groove is set up in the center position of machine cylinder one end, and the annular groove is set up in the one end of machine cylinder annular outer side wall. The utility model discloses a partition monitoring partition heating structure design by adopting, and it sets up heater, and its heater is equipped with spiral heating pipe, and it is coaxially arranged in the outside of machine cylinder, can heat the machine cylinder, and its heater is also equipped with the temperature detector that matches each area in machine cylinder, can independently carry out the temperature monitoring of each processing section, and the spiral heating pipe matching each area in machine cylinder is provided with matched heating area, can accurately understand the temperature of each area in machine cylinder, and carries out the partition corresponding heating adjustment, and it is not easy to cause material local overheating degradation condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to fireproof PBT material production technical field, concretely is fireproof PBT material's double screw extruder. BACKGROUND

[0002] The double screw extruder is the processing equipment commonly used in the production of fireproof PBT material. The double screw extruder moves the material forward by rotating two intermeshing screws in the barrel. In this process, the material is subjected to shearing, extruding and friction by the screw, and the heater outside the barrel provides heat to gradually warm the material to a molten state. Different sections of the screw have different functions.

[0003] The existing double screw extruder for fireproof PBT material also has the following problems when in use: the temperature control precision is insufficient, the barrel usually adopts a heating structure design of bottom or top, it is difficult to uniformly heat the material in the barrel, and the temperature detector is usually designed as a single, due to the large temperature difference in each area of the barrel, it is difficult to accurately understand the temperature of each area inside the barrel, and it is easy to cause local overheating degradation of the material. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a double screw extruder for fireproof PBT material, which solves the problems raised in the background art.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a double screw extruder for fireproof PBT material, comprising an extruder main body, the extruder main body is provided with a heating mechanism and a double screw extrusion mechanism, the extruder main body comprises a barrel, a mounting groove is formed at the center of one end of the barrel, a ring groove is formed at one end of the annular outer wall of the barrel, two mounting holes are formed in the inner wall of the mounting groove in a front-to-back symmetrical manner at the other end, a feed inlet is formed in the inner wall of the mounting groove at the other side of the top end, the heating mechanism comprises a heater fixedly installed at the other end of the lower inner wall of the ring groove, a spiral heating pipe is fixedly installed at the rear end of the heater, a connector is fixedly installed at one end of the heater, the double screw extrusion mechanism comprises two screw rod bodies in the mounting groove, the spiral heating pipe is coaxially arranged outside the barrel, a plurality of temperature detectors matched with each processing section of the barrel are arranged at the top end of the connector, and the spiral heating pipe matched with each processing section of the barrel is also provided with a matched heating area.

[0008] As a further embodiment of this utility model: the two screw rods are equipped with a synchronous drive mechanism, the meshing direction of the screw threads of the two screw rods is consistent, and a connecting shaft is fixedly connected to the other end of the screw rod. The synchronous drive mechanism includes a driver fixedly installed on the other side of the top of the base. The connecting shaft is rotatably assembled in the mounting hole, and a pulley is fixedly connected to the other end of the connecting shaft. A pulley is also fixedly connected to the other driving end of the driver. The lower pulley is connected to the two upper pulleys respectively through two steel chain belts sleeved on its outer side.

[0009] As a further embodiment of this utility model: a control port is provided at the front end of the heater, a heat insulation cover is fixedly connected to the outer periphery of the inner side wall of the annular groove, a through groove for the heater to be fixedly installed is provided at the bottom end of the heat insulation cover, and a feed hopper is fixedly connected to the outer side wall of the barrel at the feed inlet opening.

[0010] As a further improvement of this utility model: a support is fixedly connected to each side of the bottom end of the barrel, and the bottom ends of the two supports are fixedly connected to the same base. Mounting holes are provided between the upper and lower side walls at the four corners of the base.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, by adopting a zoned monitoring and zoned heating structure design, a heater is set up, which is equipped with a spiral heating tube and is coaxially set on the outside of the barrel to heat the barrel. The heater is also equipped with temperature detectors that match the different areas inside the barrel, so that the temperature of each processing section can be monitored independently. The spiral heating tube is set with matching heating areas for each area inside the barrel, so that the temperature of each area inside the barrel can be accurately understood and zoned heating adjustment can be performed, which is less likely to cause local overheating and degradation of materials.

[0013] 2. In this utility model, the twin-screw structure adopts a single power source design. The screw body is equipped with a connecting shaft, and the drive end of the power source driver is fixedly connected to the connecting shaft with pulleys. A steel chain belt is set between the pulleys. The two screws can be driven by one driver to rotate synchronously in the same direction (usually clockwise or counterclockwise). Since the meshing direction of the screw edges of the two screws is consistent, and the different sections of the screws have different functions, namely the conveying section, the compression section, and the homogenization section, the material can be conveyed, mixed, plasticized, and extruded. Attached Figure Description

[0014] Figure 1 This is a perspective view of the entire utility model;

[0015] Figure 2 The extruder main body and heating mechanism of this utility model are three-dimensional. Figure 1 ;

[0016] Figure 3 The extruder main body and heating mechanism of this utility model are three-dimensional. Figure 2 ;

[0017] Figure 4 This is a perspective view of the twin-screw extrusion mechanism of this utility model.

[0018] In the diagram: 1. Extruder main body; 2. Heating mechanism; 3. Twin-screw extrusion mechanism; 11. Base; 12. Support; 13. Barrel; 14. Feed inlet; 15. Feed hopper; 16. Assembly groove; 17. Assembly hole; 18. Mounting hole; 19. Annular groove; 21. Heat insulation cover; 22. Spiral heating tube; 23. Heater; 24. Connector; 25. Temperature detector; 31. Driver; 32. Connecting shaft; 33. Screw body; 34. Pulley; 35. Steel chain belt. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figures 1-4In this embodiment of the present invention, the twin-screw extruder for fire-retardant PBT material includes an extruder main body 1, which is equipped with a heating mechanism 2 and a twin-screw extrusion mechanism 3. The extruder main body 1 includes a barrel 13, with an assembly groove 16 at the center of one end of the barrel 13. An annular groove 19 is formed at one end of the annular outer wall of the barrel 13. Two assembly holes 17 are symmetrically formed at the other end of the inner wall of the assembly groove 16. A feed inlet 14 is formed on the other side of the top of the inner wall of the assembly groove 16. The heating mechanism 2 includes a heater 23 fixedly installed at the other end of the inner wall of the annular groove 19. A spiral heating tube 22 is fixedly installed at the rear end of the heater 23. A connector 24 is fixedly installed at one end of the heater 23. The twin-screw extrusion mechanism 3 includes two screw rods 33 in the assembly groove 16. The heat pipe 22 is coaxially mounted on the outside of the barrel 13. The top of the connector 24 is equipped with multiple temperature detectors 25 that match the processing sections of the barrel 13. The spiral heating pipe 22 is also equipped with matching heating areas for each processing section of the barrel 13. The whole structure adopts a zoned monitoring and zoned heating structure design. It is equipped with a heater 23, which is equipped with a spiral heating pipe 22. It is coaxially mounted on the outside of the barrel 13 and can heat the barrel 13. The heater 23 is also equipped with temperature detectors 25 that match the areas inside the barrel 13. It can independently monitor the temperature of each processing section. The spiral heating pipe 22 is matched with the areas inside the barrel 13 and is equipped with matching heating areas. It can accurately understand the temperature of each area inside the barrel 13 and perform zoned heating adjustment to prevent local overheating and degradation of materials.

[0023] Two screw rods 33 are equipped with a synchronous drive mechanism. The meshing direction of the screw threads of the two screw rods 33 is the same. A connecting shaft 32 is fixedly connected to the other end of the screw rod 33. The synchronous drive mechanism includes a driver 31 fixedly installed on the other side of the top of the base 11. The connecting shaft 32 is rotatably fitted into the mounting hole 17, and a pulley 34 is fixedly connected to the other end of the connecting shaft 32. A pulley 34 is also fixedly connected to the other driving end of the driver 31. The lower pulley 34 is connected to the two upper pulleys 34 respectively through two steel chain belts 35 sleeved on its outer side. Its twin-screw structure adopts a single power source design. The screw body 33 is equipped with a connecting shaft 32. The drive end of the power source driver 31 and the connecting shaft 32 are both fixedly connected to pulleys 34. A steel chain belt 35 is set between the pulleys 34 for transmission. The two screws can be driven by one driver 31 to rotate synchronously in the same direction, usually clockwise or counterclockwise. Since the meshing direction of the screw threads of the two screws is consistent, and the different sections of the screws have different functions, namely the conveying section, the compression section, and the homogenization section, it can realize the conveying, mixing, plasticizing and extrusion molding of materials.

[0024] A control port is provided at the front end of the heater 23, which can be connected to a control terminal via a control line to control the heater 23. A heat insulation cover 21 is fixedly connected to the outer periphery of the inner side wall of the annular groove 19. A through groove for the heater 23 to be fixedly installed is opened at the bottom end of the heat insulation cover 21. A feed hopper 15 is fixedly connected to the outer side wall of the barrel 13 and at the opening of the feed inlet 14. The extrusion raw material of fireproof PBT material can be added to the assembly groove 16 through the feed hopper 15 from the feed inlet 14.

[0025] Each of the two bottom sides of the barrel 13 is fixedly connected to a support 12, and the bottom ends of the two supports 12 are fixedly connected to the same base 11. The base 11 has mounting holes 18 between the upper and lower side walls at the four corners. The entire extruder can be fixedly installed by using the mounting components through the four mounting holes 18 on the base 11.

[0026] The working principle of this utility model is as follows: the entire extruder can be fixedly installed through the four mounting holes 18 on the base 11 with the installation components. Fire-retardant PBT material can be added to the assembly groove 16 via the feed hopper 15 and feed inlet 14. Its twin-screw structure adopts a single power source design. The screw body 33 is equipped with a connecting shaft 32. The drive end of the power source driver 31 and the connecting shaft 32 are both fixedly connected to pulleys 34. A steel chain belt 35 is installed between the pulleys 34 for transmission. The two screws can be driven synchronously in the same direction (usually clockwise or counterclockwise) by one driver 31. Because the meshing direction of the screw threads of the two screws is consistent, and the screws are different... The sections have different functions, namely conveying section, compression section, and homogenization section, which can realize the conveying, mixing, plasticizing and extrusion molding of materials. In addition, the whole adopts a zoned monitoring and zoned heating structure design, which is equipped with heater 23, which is equipped with spiral heating tube 22, coaxially set on the outside of barrel 13, and can heat barrel 13. The heater 23 is also equipped with temperature detectors 25 matching each area inside barrel 13, which can independently monitor the temperature of each processing section. The spiral heating tube 22 is matched with each area inside barrel 13 to set up matching heating areas, which can accurately understand the temperature of each area inside barrel 13 and perform zoned heating adjustment, making it less likely to cause local overheating and degradation of materials.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A twin-screw extruder for fire-resistant PBT material, comprising an extruder main body (1), wherein the extruder main body (1) is equipped with a heating mechanism (2) and a twin-screw extrusion mechanism (3). Its features are: The main body (1) of the extruder includes a barrel (13), an assembly groove (16) is provided at the center of one end of the barrel (13), and an annular groove (19) is provided at one end of the annular outer wall of the barrel (13). The inner wall of the assembly groove (16) has two assembly holes (17) symmetrically arranged at the other end, and a feed inlet (14) is provided on the other side of the top of the inner wall of the assembly groove (16). The heating mechanism (2) includes a heater (23) fixedly installed at the other end of the inner sidewall of the annular groove (19), a spiral heating tube (22) fixedly installed at the rear end of the heater (23), and a connector (24) fixedly installed at one end of the heater (23). The twin-screw extrusion mechanism (3) includes two screw rods (33) in the assembly groove (16), and the two screw rods (33) are equipped with a synchronous drive mechanism; The spiral heating tube (22) is coaxially arranged on the outside of the barrel (13). The top of the connector (24) is provided with multiple temperature detectors (25) that match the processing sections of the barrel (13). The spiral heating tube (22) also has matching heating areas that match the processing sections of the barrel (13).

2. The twin-screw extruder for fire-retardant PBT material according to claim 1, characterized in that: The heater (23) has a control port at its front end. A heat insulation cover (21) is fixedly connected to the outer periphery of the inner side wall of the annular groove (19). A through groove is provided at the bottom of the heat insulation cover (21) for the heater (23) to be fixedly installed.

3. The twin-screw extruder for fire-retardant PBT material according to claim 1, characterized in that: A feed hopper (15) is fixedly connected to the outer wall of the barrel (13) and at the opening of the feed inlet (14).

4. The twin-screw extruder for fire-retardant PBT material according to claim 1, characterized in that: Each of the two bottom sides of the barrel (13) is fixedly connected to a support (12), and the bottom ends of the two supports (12) are fixedly connected to the same base (11). The base (11) has mounting holes (18) between the upper and lower side walls at the four corners.

5. The twin-screw extruder for fire-retardant PBT material according to claim 1, characterized in that: The two screw rods (33) have the same meshing direction of the screw edges. The other end of the screw rod (33) is fixedly connected to a connecting shaft (32). The synchronous drive mechanism includes a driver (31) fixedly installed on the other side of the top of the base (11).

6. The twin-screw extruder for fire-retardant PBT material according to claim 5, characterized in that: The connecting shaft (32) is rotatably mounted in the mounting hole (17), and a pulley (34) is fixedly connected to the other end of the connecting shaft (32), and a pulley (34) is also fixedly connected to the other driving end of the driver (31).

7. The twin-screw extruder for fire-retardant PBT material according to claim 6, characterized in that: The lower pulley (34) is connected to the upper pulley (34) by two steel chain belts (35) sleeved on its outer side.

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