Anti-fracture MPP material mixing and modifying device

Abstract

The utility model relates to the technical field of material mixing, in particular to an anti-fracture MPP material mixing and modifying device. The device comprises a processing box and a supporting base, a plurality of supporting rods are connected between the processing box and the supporting base, a partition plate is arranged in the processing box, the interior of the processing box is divided into a first operation box and a second operation box by the partition plate, and two first extrusion screws are rotationally connected into the first operation box; and two second extrusion screws are rotationally connected into the second operation box, and pushing components are mounted at the ends, close to the opposite inner walls of the processing box, of the first extrusion screws and the second extrusion screws correspondingly. According to the utility model, by arranging the two material pushing components and the group of first extrusion screw rods and the group of second extrusion screw rods which are opposite in conveying direction, the phenomenon that materials are blocked between threads of the extrusion screw rods and are accumulated in a large quantity is avoided; a fan and a net-shaped filter plate are arranged, impurities in production are adsorbed and blocked, and the harm caused by the fact that waste gas is exhausted and inhaled by the human body is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material mixing, in particular to a fracture-proof MPP material mixing and modifying device. Background Art

[0002] MPP stands for microporous expanded polypropylene, which specifically refers to polypropylene (PP) porous foam materials with a pore size of less than 100μm. A more stringent definition requires that the pore size is less than 10μm and the pore density is greater than 10 to the power of 9 per cubic centimeter. MPP materials are widely used in packaging, automobiles, construction, medical and other fields. It can be used to make food packaging materials, auto parts, thermal insulation materials, sound-absorbing materials, etc. Over time, PP materials may experience performance degradation, such as becoming brittle, losing strength, and weakening impact resistance. PP materials need to be modified to overcome this. When modifying PP materials, physical blending or chemical modification methods are usually used. When using physical blending methods, twin-screw extruders are generally used;

[0003] However, the twin-screw extruder may not mix the materials evenly during use, and the materials may get stuck between the threads of the extrusion screw, resulting in a large amount of material accumulation, affecting normal operation. At the same time, the gas generated by the extrusion of the materials during production affects the air environment of the workshop and endangers human health. In view of this, we propose an anti-fracture MPP material mixing and modification device. Utility Model Content

[0004] The purpose of the present invention is to provide a fracture-resistant MPP material mixing and modifying device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides an anti-fracture MPP material mixing and modification device, including a processing box and a support base, a plurality of support rods are connected between the processing box and the support base, a partition plate is provided inside the processing box, and the partition plate divides the interior of the processing box into a first operating box and a second operating box, two first extrusion screws are rotatably connected inside the first operating box, and two second extrusion screws are rotatably connected inside the second operating box, wherein: the ends of the first extrusion screw and the second extrusion screw close to the opposite inner walls of the processing box are both equipped with pushing members, and the surface of the partition plate is provided with a conveying hole.

[0006] As a further improvement of the present technical solution, a drive motor is fixedly connected to the side wall of the processing box, and the output end of the drive motor is fixedly connected to the end of the first extrusion screw. The ends of the first extrusion screw and the second extrusion screw both pass through the processing box to the outside. A main pulley is installed at the end of the first extrusion screw, and a secondary pulley is installed at the end of the second extrusion screw. A drive belt is connected between the main pulley and the secondary pulley. The ends of the two first extrusion screws close to the main pulley are installed with gears that mesh with each other, and the ends of the two second extrusion screws close to the secondary pulley are installed with gears that mesh with each other.

[0007] As a further improvement of the present technical solution, an installation box is provided on the outer wall of the processing box, a swivel is rotatably connected to the inner wall of the installation box, a fan is installed on the end of the swivel, a transmission belt is connected between the swivel and the first extrusion screw, and a collecting box is provided on the outer wall of the processing box, a mesh filter plate is installed inside the collecting box, and adsorption carbon is provided inside the mesh filter plate, wherein: the fan and the mesh filter plate are adapted to each other and are on the same horizontal line.

[0008] As a further improvement of the present technical solution, a feed cylinder is installed on the upper surface of the processing box, and a plurality of feeding ports are provided on the outer wall of the feed cylinder.

[0009] As a further improvement of the present technical solution, a discharge port is installed on the lower surface of the processing box.

[0010] As a further improvement of the present technical solution, the conveying direction of the two first extrusion screws is opposite to the conveying direction of the two second extrusion screws.

[0011] As a further improvement of the present technical solution, the pushing component is composed of a connecting sleeve and a plurality of pushing plates.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the anti-fracture MPP material mixing and modification device, by providing two pushing members and a group of first extrusion screws and a group of second extrusion screws with opposite conveying directions, it is avoided that the material is stuck between the threads of the extrusion screws and causes a large amount of material accumulation, thereby avoiding affecting the work and affecting the work efficiency, and at the same time, the material can be mixed more fully and evenly; a fan and a mesh filter plate are provided to adsorb and block debris in the production, greatly reducing the discharge of waste gas and the harm to human health after inhalation; by only providing a drive motor to drive the operation of the entire mechanism, the structure is simple, the operation is easy, and the production cost is greatly saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0017] Figure 4 for Figure 3 Schematic diagram of the locally enlarged structure in .

[0018] The meaning of each number in the figure is:

[0019] 1. Processing box; 2. Support base; 21. Support rod; 10. First operating box; 11. Second operating box; 101. First extrusion screw; 111. Second extrusion screw; 1111. Pushing member; 12. Driving motor; 1012. Main pulley; 1112. Secondary pulley; 1013. Driving belt; 13. Mounting box; 131. Rotating shaft; 1311. Fan; 14. Collecting box; 141. Mesh filter plate; 15. Feed barrel; 151. Feeding port; 112. Discharging port; 16. Conveying hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] MPP stands for microporous expanded polypropylene, which specifically refers to polypropylene (PP) porous foam materials with cell sizes less than 100μm. A stricter definition requires cell sizes less than 10μm and cell densities greater than 10^9 per cubic centimeter. MPP materials are widely used in packaging, automotive, construction, medical, and other fields. They can be used to make food packaging materials, automotive parts, thermal insulation materials, sound-absorbing materials, etc. Over time, PP materials may experience performance degradation, such as brittleness, reduced strength, and weakened impact resistance. PP material modification is necessary to overcome this. When modifying PP materials, physical blending or chemical modification methods are usually used. When using physical blending methods, twin-screw extruders are generally used. Please refer to Figure 1-Figure 4As shown, this embodiment provides an anti-fracture MPP material mixing and modification device, including a processing box 1 and a support base 2, and a number of support rods 21 are connected between the processing box 1 and the support base 2. Considering that the twin-screw extruder may not mix the materials evenly during use, and the materials may be stuck between the threads of the extrusion screws, resulting in a large amount of material accumulation, affecting normal operation, the specific details are as follows: a partition plate is provided inside the processing box 1, and the partition plate divides the interior of the processing box 1 into a first operating box 10 and a second operating box 11. Two first extrusion screws 101 are rotatably connected inside the first operating box 10, and two second extrusion screws 111 are rotatably connected inside the second operating box 11, wherein: the first extrusion screw 101 and the second extrusion screw 111 are both installed with a pushing member 1111 at the ends near the opposite inner walls of the processing box 1, and a conveying hole 16 is opened on the surface of the partition plate.

[0022] The improvement of this embodiment is that:

[0023] The present invention takes into account that the twin-screw extruder may not mix the materials evenly during use, and the materials may get stuck between the threads of the extrusion screws, causing a large amount of material accumulation, affecting normal work. At the same time, the gas generated by the extrusion of the materials during production affects the air environment of the workshop and endangers human health. Therefore, by providing two pushing members 1111 and a group of first extrusion screws 101 and a group of second extrusion screws 111 with opposite conveying directions, it is avoided that the materials get stuck between the threads of the extrusion screws, causing a large amount of material accumulation, thereby avoiding affecting work and affecting work efficiency, and at the same time, the materials can be mixed more fully and evenly.

[0024] Considering how to save production costs while making the device run, the details are as follows: a driving motor 12 is fixedly connected to the side wall of the processing box 1, and the output end of the driving motor 12 is fixedly connected to the end of the first extrusion screw 101. The ends of the first extrusion screw 101 and the second extrusion screw 111 both pass through the processing box 1 to the outside. A main pulley 1012 is installed at the end of the first extrusion screw 101, and a secondary pulley 1112 is installed at the end of the second extrusion screw 111. A driving belt 1013 is connected between the main pulley 1012 and the secondary pulley 1112. The ends of the two first extrusion screws 101 close to the main pulley 1012 are both installed. The gears are meshed with each other, and the ends of the two second extrusion screws 111 near the secondary pulley 1112 are both equipped with meshed gears. By starting the drive motor 12, one of the first extrusion screws 101 is rotated to drive the pushing member 1111 to rotate. Because of the action of the two meshing gears, the two first extrusion screws 101 are rotated. A driving belt 1013 is connected between the main pulley 1012 and the secondary pulley 1112. When the first extrusion screw 101 rotates, the second extrusion screw 111 can be driven to rotate. Similarly, due to the action of the two meshing gears, the two second extrusion screws 111 and the pushing member 1111 are rotated.

[0025] Taking into account that the gas generated by material extrusion during production affects the air environment of the workshop and endangers human health, an installation box 13 is provided on the outer wall of the processing box 1, and the inner wall of the installation box 13 is rotatably connected to a rotary shaft 131, and a fan 1311 is installed at the end of the rotary shaft 131, and a transmission belt is connected between the rotary shaft 131 and the first extrusion screw 101. A collecting box 14 is provided on the outer wall of the processing box 1, and a mesh filter plate 141 is installed inside the collecting box 14, and adsorption carbon is provided inside the mesh filter plate 141, wherein: the fan 1311 is adapted to the position of the mesh filter plate 141 and is on the same horizontal line. When the first extrusion screw 101 rotates, the rotary shaft 131 rotates due to the action of the transmission belt, thereby driving the fan 1311 to blow the gas toward the collection box 14, wherein the adsorption carbon provided in the mesh filter plate 141 adsorbs and blocks the exhaust gas.

[0026] In order to facilitate the simultaneous addition of raw materials, a feed barrel 15 is installed on the upper surface of the processing box 1. A plurality of feed ports 151 are provided on the outer wall of the feed barrel 15. By providing a plurality of feed ports 151, a variety of raw materials can be added at the same time to avoid uneven mixing of the front and rear raw materials.

[0027] Secondly, a discharge port 112 is installed on the lower surface of the processing box 1 to discharge the mixed and modified PP material.

[0028] In order to fully mix the raw materials, the conveying direction of the two first extrusion screws 101 is opposite to the conveying direction of the two second extrusion screws 111. The opposite conveying directions can perform secondary mixing on the raw materials to make the mixing more uniform.

[0029] Secondly, the pushing member 1111 is composed of a connecting sleeve and a plurality of pushing plates. The arrangement of the plurality of pushing plates can push the mixed raw materials to prevent them from accumulating at the end of the processing box 1.

[0030] When the utility model is used in a specific manner, after the user starts the driving motor 12, the polypropylene, polyethylene and compatibilizer are simultaneously put into the feeding port 151 through the feeding barrel 15 and enter the first operating box 10. The start of the driving motor 12 can make one of the first extrusion screws 101 rotate and drive the pushing member 1111 to rotate. Because the two meshing gears make the two first extrusion screws 101 rotate, a driving belt 1013 is connected between the main pulley 1012 and the secondary pulley 1112. When the first extrusion screw 101 rotates, the second extrusion screw 111 can be driven to rotate. In principle, due to the action of the two meshing gears, the two second extrusion screws 111 and the pushing member 1111 rotate, and the raw materials are first squeezed and transported from right to left in the first operating box 10, and then fall into the second operating box 11 through the conveying hole 16 to be squeezed and transported from left to right; while the driving motor 12 is started to rotate the first extrusion screw 101, the rotation shaft 131 is rotated due to the action of the transmission belt, thereby driving the fan 1311 to blow the gas toward the collection box 14, wherein the adsorption carbon provided in the mesh filter plate 141 adsorbs and blocks the exhaust gas, and finally the mixed and modified PP material is discharged through the discharge port 112.

[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 fracture-resistant MPP material mixing and modifying device, comprising a processing box (1) and a supporting base (2), wherein a plurality of supporting rods (21) are connected between the processing box (1) and the supporting base (2), characterized in that: A partition plate is provided inside the processing box (1), and the partition plate divides the interior of the processing box (1) into a first operating box (10) and a second operating box (11). Two first extrusion screws (101) are rotatably connected inside the first operating box (10), and two second extrusion screws (111) are rotatably connected inside the second operating box (11), wherein: the ends of the first extrusion screw (101) and the second extrusion screw (111) close to the opposite inner walls of the processing box (1) are both installed with pushing members (1111), and a conveying hole (16) is opened on the surface of the partition plate.

2. The anti-fracture MPP material mixing and modifying device according to claim 1, characterized in that: The side wall of the processing box (1) is fixedly connected to a driving motor (12), and the output end of the driving motor (12) is fixedly connected to the end of the first extrusion screw (101). The ends of the first extrusion screw (101) and the second extrusion screw (111) both pass through the processing box (1) to the outside. The end of the first extrusion screw (101) is installed with a main pulley (1012), and the end of the second extrusion screw (111) is installed with a secondary pulley (1112). A driving belt (1013) is connected between the main pulley (1012) and the secondary pulley (1112). The ends of the two first extrusion screws (101) close to the main pulley (1012) are both installed with gears that mesh with each other, and the ends of the two second extrusion screws (111) close to the secondary pulley (1112) are both installed with gears that mesh with each other.

3. The anti-fracture MPP material mixing and modifying device according to claim 1, characterized in that: The outer wall of the processing box (1) is provided with an installation box (13), the inner wall of the installation box (13) is rotatably connected to a rotating shaft (131), a fan (1311) is installed at the end of the rotating shaft (131), a transmission belt is connected between the rotating shaft (131) and the first extrusion screw (101), the outer wall of the processing box (1) is provided with a collection box (14), a mesh filter plate (141) is installed inside the collection box (14), and adsorption carbon is provided inside the mesh filter plate (141), wherein: the fan (1311) and the mesh filter plate (141) are adapted to each other in position and are on the same horizontal line.

4. The anti-fracture MPP material mixing and modifying device according to claim 1, characterized in that: A feeding cylinder (15) is installed on the upper surface of the processing box (1), and a plurality of feeding ports (151) are provided on the outer wall of the feeding cylinder (15).

5. The anti-fracture MPP material mixing and modifying device according to claim 1, characterized in that: A discharge port (112) is installed on the lower surface of the processing box (1).

6. The anti-fracture MPP material mixing and modifying device according to claim 1, characterized in that: The conveying direction of the two first extrusion screws (101) is opposite to the conveying direction of the two second extrusion screws (111).

7. The anti-fracture MPP material mixing and modifying device according to claim 1, characterized in that: The pushing component (1111) consists of a connecting sleeve and a plurality of pushing plates.

Images