Double-screw stirring device for plastic bonding compatilizer

Abstract

The utility model relates to the technical field of plastic processing, in particular to a double-screw stirring device for a plastic bonding compatibilizer, which comprises a rack, a mixing barrel and a cold and hot circulating component, the mixing barrel is mounted at the top of the rack, the cold and hot circulating component is arranged at one end of the bottom in the rack, a gear box is arranged at one end of the top of the rack, and the gear box is connected with the rack. A motor is installed at one end of the machine frame, and the input end of the motor is arranged in the gearbox. A set of double-screw stirring mechanism is provided for plastic processing through an assembly composed of the rack, the mixing barrel and the cold and hot circulation assembly, synchronous reverse rotation is achieved through the double-screw design formed by the first spiral roller and the second spiral roller in the mixing barrel, the strong shearing and mixing effect is formed, and the plastic processing efficiency is improved. The uniform mixing of the plastic bonding compatibilizer and resin is effectively promoted, the fin blocks arranged on the periphery of the roller at equal intervals further increase the disturbance of materials in the mixing barrel, the dispersion efficiency is improved, and the uniform distribution of the compatibilizer in a matrix is ensured.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically to a twin-screw mixing device for plastic adhesive compatibilizers. Background Technology

[0002] Plastic adhesive compatibilizers can bind incompatible polymers together through molecular bonding forces to form stable blends, reduce interfacial tension, and enhance interfacial bonding forces, thereby optimizing the performance of composite materials and reducing costs. They are usually mixed with plastics by stirring.

[0003] Existing independent blade mixing equipment is prone to uneven dispersion of compatibilizers due to insufficient shear force, and the temperature in the mixing center area far from the tank wall is difficult to adjust, which can easily lead to material degradation or incomplete reaction. Therefore, a twin-screw mixing device for plastic adhesive compatibilizers is proposed. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a twin-screw mixing device for plastic adhesive compatibilizers.

[0005] The technical solution adopted by this utility model to solve its technical problem is a twin-screw mixing device for plastic adhesive compatibilizer, including a frame, a mixing cylinder and a hot and cold circulation assembly. The mixing cylinder is installed on the top of the frame, the hot and cold circulation assembly is located at one bottom end of the frame, a gearbox is provided at one top end of the frame, a motor is installed at one end of the frame, the input end of the motor is located in the gearbox, a first spiral drum and a second spiral drum are respectively provided on both sides of the mixing cylinder, and fins for increasing turbulence are provided at equal intervals on the outer periphery of the first spiral drum and the second spiral drum.

[0006] The mixing cylinder has a feed port at one end of its top and a discharge port at the bottom of the other end.

[0007] By adopting the above technical solution, a twin-screw mixing mechanism is provided for plastic processing through a component consisting of a frame, a mixing cylinder, and a hot and cold circulation assembly. The twin-screw design formed by the first and second spiral rollers in the mixing cylinder achieves synchronous counter-rotation, generating strong shearing and mixing effects, which effectively promotes the uniform mixing of plastic adhesive compatibilizer and resin. The fins evenly spaced on the outer periphery of the rollers further increase the disturbance of materials in the mixing cylinder, improve dispersion efficiency, and ensure the uniform distribution of compatibilizer in the matrix.

[0008] Specifically, the first and second spiral rollers are rotatably connected to the mixing cylinder at both ends via bearings. Both the first and second spiral rollers have channels for water to flow through inside. One end of both the first and second spiral rollers completely extends through the gearbox. Drainage pipes and return water pipes are installed at both ends of the first and second spiral rollers via rotary joints.

[0009] Specifically, a first gear is installed inside the gearbox and on the first and second spiral rollers via a key pin, and a second gear is installed at the output end of the motor and on the shaft of the first spiral roller, respectively, to mesh with each other.

[0010] Specifically, the hot and cold circulation assembly includes a water tank, a set of first ball valves for return water is installed on one side of the water tank, and two sets of second ball valves for connecting external cold water equipment are installed on the other side of the water tank. A circulating water pump is installed inside the frame and located on one side of the water tank, and the inlet end of the circulating water pump is connected to the water tank.

[0011] The drain end of the circulating water pump is connected to the end of the return water pipe away from the first and second spiral drums, and the end of the drain pipe away from the first and second spiral drums is connected to the first ball valve.

[0012] Specifically, the water tank is equipped with a cover on top, and a flange electric heating tube is installed inside the water tank, with the flange electric heating tube mounted on the cover.

[0013] By adopting the above technical solution, and through the setting of the hot and cold circulation components, the combination of water tank, circulating water pump, drainage pipe and return water pipe in the hot and cold circulation components realizes the temperature adjustment of the internal channel of the twin screw. According to the processing requirements, external cold water equipment or flange electric heating tubes can be connected for heating / cooling to ensure that the materials are mixed at the optimal temperature.

[0014] The beneficial effects of this utility model are as follows: The assembly, consisting of a frame, mixing drum, and hot / cold circulation components, provides a twin-screw mixing mechanism for plastic processing. The twin-screw design, formed by the first and second spiral drums within the mixing drum, achieves synchronous counter-rotation, generating strong shearing and mixing effects. This effectively promotes the uniform mixing of the plastic adhesive compatibilizer and resin. The fins evenly spaced on the outer circumference of the drums further increase material agitation within the mixing drum, improving dispersion efficiency and ensuring uniform distribution of the compatibilizer in the matrix. The hot / cold circulation components, including a water tank, circulating water pump, drainage pipe, and return water pipe, allow for temperature adjustment of the internal channels of the twin screws. Depending on processing requirements, external chilled water equipment or flange electric heating elements can be connected for heating / cooling to ensure… The materials are mixed at the optimal temperature. The mixing drum, gearbox, high-speed motor, and hot and cold circulation components are integrated on the frame, resulting in a compact structure with a small footprint. It is suitable for various plastic adhesive compatibilizers and takes into account the processing requirements of different plastic adhesive compatibilizers. It can be widely used in the preparation of various plastics such as PC / ABS, PC / PBT, and PA / ABS. This application solves the problem of uneven dispersion of compatibilizers caused by insufficient shear force in existing independent stirring blade type stirring equipment. The twin screw reverse rotation combined with fin turbulence design in this application significantly enhances the mixing effect and ensures uniform dispersion. In addition, the temperature of the stirring center area far from the drum wall is difficult to adjust, which can easily lead to material degradation or incomplete reaction. The hot and cold circulation system of this application can use the temperature regulation of the center area to ensure that the materials are processed under optimal conditions. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a schematic diagram of the mixing cylinder of this utility model;

[0018] Figure 3 This is a partial schematic diagram of the first and second spiral rollers of this utility model;

[0019] Figure 4 This is a schematic diagram of the interior of the water tank of this utility model;

[0020] In the diagram: Frame 1, Mixing cylinder 2, Feed inlet 21, Discharge inlet 22, First spiral roller 23, Second spiral roller 24, Fin block 25, Gearbox 3, First gear 31, Second gear 32, Motor 4, Hot and cold circulation assembly 5, Drainage pipe 51, Return water pipe 52, Water tank 53, First ball valve 54, Second ball valve 55, Circulating water pump 56, Tank cover 57, Flange electric heating tube 58. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-4 As shown, the present invention discloses a twin-screw mixing device for a plastic adhesive compatibilizer, comprising a frame 1, a mixing cylinder 2, and a hot and cold circulation assembly 5. The mixing cylinder 2 is installed on the top of the frame 1, the hot and cold circulation assembly 5 is disposed at one bottom end of the frame 1, a gearbox 3 is disposed at one top end of the frame 1, a motor 4 is installed at one end of the frame 1, and the input end of the motor 4 is disposed inside the gearbox 3. A first spiral roller 23 and a second spiral roller 24 are respectively disposed on both sides inside the mixing cylinder 2, and fins 25 for increasing turbulence are disposed at equal intervals on the outer periphery of the first spiral roller 23 and the second spiral roller 24.

[0023] The mixing cylinder 2 has a feeding port 21 at one end of its top and a discharge port 22 at the bottom of the other end.

[0024] The present invention also includes that the two ends of the first spiral roller 23 and the second spiral roller 24 are rotatably connected to the mixing cylinder 2 by bearings, the first spiral roller 23 and the second spiral roller 24 are both provided with channels for water to flow through, one end of the first spiral roller 23 and the second spiral roller 24 completely penetrates the gearbox 3, and the two ends of the first spiral roller 23 and the second spiral roller 24 are respectively equipped with a drain pipe 51 and a return water pipe 52 through a rotary joint.

[0025] The present invention also includes a first gear 31 that meshes with the gearbox 3 and is located on the first spiral roller 23 and the second spiral roller 24 via a key pin, and a second gear 32 that meshes with the output end of the motor 4 and the shaft of the first spiral roller 23.

[0026] The present invention also includes that the hot and cold circulation component 5 includes a water tank 53, a set of first ball valves 54 for return water is installed on one side of the water tank 53, and two sets of second ball valves 55 for connecting external cold water equipment are installed on the other side of the water tank 53. A circulating water pump 56 is installed inside the frame 1 and located on one side of the water tank 53, and the inlet end of the circulating water pump 56 is connected to the water tank 53.

[0027] The drain end of the circulating water pump 56 is connected to the end of the return water pipe 52 away from the first spiral drum 23 and the second spiral drum 24, and the end of the drain pipe 51 away from the first spiral drum 23 and the second spiral drum 24 is connected to the first ball valve 54.

[0028] This utility model also includes a tank cover 57 installed on the top of the water tank 53, and a flange electric heating tube 58 installed inside the water tank 53.

[0029] In use, the combination of the water tank 53, circulating water pump 56, drainage pipe 51 and return water pipe 52 in the hot and cold circulation component 5 enables the temperature adjustment of the internal channel of the twin screw. According to processing requirements, external cold water equipment can be connected or the flange electric heating tube 58 can be used for heating / cooling to ensure that the materials are mixed at the optimal temperature.

[0030] In use, the electrical components in the site provide power to the electrical mechanism described in this application. The two sets of second ball valves 55 are connected to the inlet and outlet of the cooling tower, evaporative cooler, or industrial chiller in the site. The feed inlet 21 and discharge inlet 22 of the mixing cylinder 2 are connected to the discharge and feed ends of the equipment in the previous and next stages of plastic processing, respectively. During processing, plastic adhesive compatibilizers and resins enter the mixing cylinder 2 through the feed inlet 21. Through the operation of the motor 4 and the meshing between the first gear 31 and the second gear 32, the first spiral roller 23 and the second spiral roller 24 rotate synchronously in opposite directions, starting to mix the materials entering the mixing cylinder 2. The twin-screw design formed by the first spiral roller 23 and the second spiral roller 24 in the mixing cylinder 2 creates a strong shearing and mixing effect, effectively promoting the uniform mixing of the plastic adhesive compatibilizer and resin. The fins 25 evenly spaced on the outer periphery of the rollers further increase the disturbance of the materials in the mixing cylinder 2, improving the dispersion efficiency and ensuring the uniform distribution of the compatibilizer in the matrix. According to processing requirements, when heating of the material in the mixing drum 2 is needed, the flange electric heating tube 58 can be opened to heat the water in the water tank 53, and the second ball valve 55 can be closed to disconnect the water tank 53 from the cooling equipment. The circulating water pump 56 draws water from the drainage pipe 51 and discharges it to the return water pipe 52, so that the heated water source circulates inside the water tank 53 and the first spiral drum 23 and the second spiral drum 24. During this period, a temperature sensing device can be installed on the water tank 53 or the mixing drum 2 for personnel to monitor the heating status and ensure the temperature of the mixed material. In the state where a low-temperature mixing environment is required, the flange electric heating tube 58 is not working, and the second ball valve 55 connected to the cooling equipment is opened. The cooling equipment continuously cools the water source in the water tank 53. With the cooperation of the circulating water pump 56, the first spiral drum 23 and the second spiral drum 24 are cooled down, reducing the temperature generated during the mixing operation. This allows the materials to be mixed under more suitable temperature conditions for the mixing operation, which is suitable for a variety of plastic adhesive compatibilizers and takes into account the processing requirements of different plastic adhesive compatibilizers.

[0031] Furthermore, an openable cylinder cover is provided above the mixing cylinder 2.

[0032] During operation, operators should pay close attention to the operating status of the device. If any abnormalities are found (such as noise, vibration, abnormal temperature, etc.), the machine should be stopped immediately for inspection and troubleshooting. When adjusting the temperature of the hot and cold circulation component (5), it should be adjusted reasonably according to the actual processing requirements and material characteristics to avoid the adverse effects of excessively high or low temperatures on material performance. When cleaning and maintaining the device, appropriate cleaning agents and tools should be used to avoid damage or corrosion to the device.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A twin-screw kneader for a plastic adhesion compatibilizer, characterized by comprising: The device includes a frame (1), a mixing cylinder (2), and a hot and cold circulation assembly (5). The mixing cylinder (2) is installed on the top of the frame (1). The hot and cold circulation assembly (5) is located at the bottom end of the frame (1). A gearbox (3) is provided at the top end of the frame (1). A motor (4) is installed at one end of the frame (1). The input end of the motor (4) is located inside the gearbox (3). A first spiral roller (23) and a second spiral roller (24) are respectively provided on both sides inside the mixing cylinder (2). Fins (25) for increasing turbulence are provided at equal intervals on the outer periphery of the first spiral roller (23) and the second spiral roller (24). The mixing cylinder (2) has a feeding port (21) at one end of its top and a discharge port (22) at the bottom of the other end.

2. A twin-screw kneader for plastic adhesion compatibilizers according to claim 1, wherein The first spiral drum (23) and the second spiral drum (24) are rotatably connected to the mixing cylinder (2) through bearings at both ends. The first spiral drum (23) and the second spiral drum (24) are both provided with channels for water to flow through. One end of the first spiral drum (23) and the second spiral drum (24) completely penetrates the gearbox (3). The first spiral drum (23) and the second spiral drum (24) are respectively equipped with a drain pipe (51) and a return water pipe (52) through a rotary joint at both ends.

3. The twin-screw mixing device for a plastic adhesive compatibilizer according to claim 2, characterized in that, The gearbox (3) is equipped with a first gear (31) that meshes with the first spiral roller (23) and the second spiral roller (24) by key pins. The output end of the motor (4) and the shaft of the first spiral roller (23) are both equipped with a second gear (32) that meshes with the first spiral roller (23).

4. The twin-screw kneader apparatus for a plastic adhesion compatibilizer according to claim 3, wherein The hot and cold circulation assembly (5) includes a water tank (53), a set of first ball valves (54) for return water is installed on one side of the water tank (53), and two sets of second ball valves (55) for connecting external cold water equipment are installed on the other side of the water tank (53). A circulating water pump (56) is installed in the frame (1) and located on one side of the water tank (53). The inlet end of the circulating water pump (56) is connected to the water tank (53). The drain end of the circulating water pump (56) is connected to the end of the return water pipe (52) away from the first spiral drum (23) and the second spiral drum (24), and the end of the drain pipe (51) away from the first spiral drum (23) and the second spiral drum (24) is connected to the first ball valve (54).

5. A twin-screw kneader for plastic adhesion compatibilizers according to claim 4, wherein The water tank (53) is equipped with a tank cover (57) on top, and a flange electric heating pipe (58) is installed inside the water tank (53). The flange electric heating pipe (58) is installed on the tank cover (57).

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