Mixer for polypropylene composite material

Abstract

The utility model provides a mixer for a polypropylene composite material, and belongs to the technical field of plastic injection molding. The mixer comprises a mixing tank body, a first motor, a second motor, an inner stirring assembly and an outer stirring assembly, the inner stirring assembly comprises an inner driving shaft, a stirring shaft, a first propeller blade and a second propeller blade, the first propeller blade and the second propeller blade are both fixedly connected to the stirring shaft, and the spiral directions of the first propeller blade and the second propeller blade are opposite; the upper end of the stirring shaft is fixed at the lower end of an inner driving shaft, and the upper end of the inner driving shaft is in power connection with a second right-angle speed reducer; the outer stirring assembly comprises a stirring frame and a hollow outer driving shaft, the inner driving shaft is sleeved with the outer driving shaft, the upper end of the outer driving shaft is in power connection with the first right-angle speed reducer, and the stirring frame is fixed to the lower end of the outer driving shaft. The rotating directions of the first motor and the second motor are opposite, and the stirring plates can be reversely matched with the propeller blades to cut the raw materials and scatter the raw materials which are adhered into a ball.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic injection molding and relates to a mixer for polypropylene composite materials. Background Art

[0002] Milk powder can lids are made of polypropylene. Before injection molding, polypropylene masterbatch particles need to be mixed with some color masterbatches or modified additives, and then heated and melted before being injected into the injection molding machine for molding. However, due to the humid storage environment or the lack of drying during the production process, the polypropylene masterbatch particles are easily adhered to the additive particles during the mixing process, forming a mass, so that the raw materials cannot be fully mixed and evenly, affecting the product quality. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and proposes a mixer for polypropylene composite materials, which can break up the agglomerated raw materials, mix the materials evenly and have high stirring efficiency.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a mixer for polypropylene composite materials, comprising a mixing tank body, a first motor, a second motor, an inner stirring component, and an outer stirring component, characterized in that a frame is fixed on the upper end of the mixing tank body, a first right-angle reducer is fixed on the frame, a second right-angle reducer is fixed on the upper end of the first right-angle reducer, the first motor is connected to the first right-angle reducer by power, the second motor is connected to the second right-angle reducer by power, the inner stirring component comprises an inner drive shaft, a stirring shaft, a propeller blade 1, and a propeller blade 2, the propeller blade 1 and the propeller blade 2 are both fixedly connected to the stirring shaft, the propeller blade 1 and the propeller blade 2 have opposite spiral directions, the radius of the propeller blade 1 is greater than the radius of the propeller blade 2, the upper end of the stirring shaft is fixed to the lower end of the inner drive shaft, and the upper end of the inner drive shaft is connected to the second right-angle reducer by power; the outer stirring component comprises a stirring frame and a hollow outer drive shaft, the outer drive shaft is sleeved outside the inner drive shaft, the upper end of the outer drive shaft is connected to the first right-angle reducer by power, and the stirring frame is fixed to the lower end of the outer drive shaft.

[0005] The first motor is started to drive the outer stirring component to rotate, and the second motor is started to drive the inner stirring component to rotate. The propeller blades 1 and 2 rotate in the opposite direction to the stirring frame, so as to shear the raw materials and stir them more evenly.

[0006] Furthermore, the ends and the middle parts of the propeller blade 1 and the propeller blade 2 are respectively fixed to the stirring shaft through connecting rods.

[0007] Furthermore, a protruding stirring plate and a scraper arranged outwardly and inclined to scrape the inner wall of the mixing tank are fixed on the inner side of the stirring frame.

[0008] Furthermore, a positioning hole is opened at the lower end of the stirring frame, and the lower end of the stirring shaft is rotatably inserted into the positioning hole.

[0009] Furthermore, a feeding end is provided on the upper end surface of the mixing tank.

[0010] Furthermore, the lower end of the mixing tank is connected to a discharge port and four supporting legs, a discharge motor is fixed to the bottom of the mixing tank, a discharge plate is rotatably connected to the discharge port, and the output shaft of the discharge motor is connected to the discharge plate through a connecting rod assembly. The discharge motor drives the connecting rod assembly to move, driving the discharge plate to rotate, thereby completing the action of opening or closing the discharge port.

[0011] Furthermore, the wall of the mixing tank is provided with an interlayer, a heating coil is provided in the interlayer, and the mixing tank is provided with an inlet and an outlet of the heating coil. By injecting high-temperature steam into the heating coil, the temperature in the mixing tank can be increased, which is convenient for heating the polypropylene mixture.

[0012] Compared with the prior art, the mixer of the polypropylene composite material has the following advantages:

[0013] 1. The propeller blade 1 and the propeller blade 2 stir at the same time, and the spiral directions of the propeller blade 1 and the propeller blade 2 are opposite, so the mixing is uniform, the stirring efficiency is high, and the stirring time can be saved.

[0014] 2. Since the output shafts of the first motor and the second motor can be set to opposite directions, the inner drive shaft and the outer drive shaft have opposite directions. The outer stirring frame can scrape off the raw materials stuck on the tank wall, while the stirring plate can also cooperate with the propeller blades in reverse to cut the raw materials and break up the raw materials that are stuck together. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of a mixer for polypropylene composite materials.

[0016] Figure 2 It is a three-dimensional diagram of a mixing machine for polypropylene composite materials.

[0017] Figure 3 It is an assembly drawing of the inner stirring component and the outer stirring component.

[0018] Figure 4 It is a structural schematic diagram of the internal stirring component.

[0019] In the figure, 1, mixing tank body; 2, first motor; 3, second motor; 4, frame; 5, first right-angle reducer; 6, second right-angle reducer; 7, inner drive shaft; 8, stirring shaft; 9, propeller blade one; 10, propeller blade two; 11, stirring frame; 12, outer drive shaft; 13, connecting rod; 14, stirring plate; 15, scraper; 16, feed end; 17, discharge port; 18, supporting foot; 19, discharge motor; 20, discharge plate; 21, connecting rod assembly; 22, heating coil; 23, inlet; 24, outlet. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] The present invention relates to a polypropylene composite material mixer, comprising a mixing tank body 1, a first motor 2, a second motor 3, an internal stirring assembly, and an external stirring assembly. A frame 4 is fixed on the upper end of the mixing tank body 1, a first right-angle reducer 5 is fixed on the frame 4, a second right-angle reducer 6 is fixed on the upper end of the first right-angle reducer 5, the first motor 2 is connected to the first right-angle reducer 5 by power, the second motor 3 is connected to the second right-angle reducer 6 by power, the internal stirring assembly comprises an internal driving shaft 7, a stirring shaft 8, a propeller blade 1 9, a propeller blade 2 10, the propeller blade 1 9 and the propeller The propeller blades 10 are fixedly connected to the stirring shaft 8, the spiral directions of the propeller blades 19 and 10 are opposite, the radius of the propeller blades 19 is larger than the radius of the propeller blades 10, the upper end of the stirring shaft 8 is fixed to the lower end of the inner drive shaft 7, and the upper end of the inner drive shaft 7 is connected to the second right-angle reducer 6; the external stirring assembly includes a stirring frame 11 and a hollow external drive shaft 12, the external drive shaft 12 is sleeved outside the inner drive shaft 7, the upper end of the external drive shaft 12 is connected to the first right-angle reducer 5, and the stirring frame 11 is fixed to the lower end of the external drive shaft 12.

[0022] The ends and the middle of the propeller blade 1 9 and the propeller blade 2 10 are respectively fixed to the stirring shaft 8 through the connecting rod 13. A protruding stirring plate 14 and a scraper 15 arranged outwardly and inclined to scrape the inner wall of the mixing tank 1 are fixed to the inner side of the stirring frame 11. A positioning hole is opened at the lower end of the stirring frame 11, and the lower end of the stirring shaft 8 is rotatably inserted into the positioning hole.

[0023] The upper end surface of the mixing tank body 1 is provided with a feeding end 16, the lower end of the mixing tank body 1 is connected with a discharge port 17 and four supporting legs 18, a discharge motor 19 is also fixed to the bottom of the mixing tank body 1, a discharge plate 20 is rotatably connected to the discharge port 17, and the output shaft of the discharge motor 19 is connected to the discharge plate 20 through a connecting rod assembly 21. The discharge motor 19 drives the connecting rod assembly 21 to move, drives the discharge plate 20 to rotate, thereby completing the action of opening or closing the discharge port 17.

[0024] The wall of the mixing tank 1 is provided with an interlayer, and a heating coil 22 is provided in the interlayer. The mixing tank 1 is provided with an inlet 23 and an outlet 24 of the heating coil 22. By injecting high-temperature steam into the heating coil 22, the temperature in the mixing tank 1 can be increased, which is convenient for heating the polypropylene mixture.

[0025] Start the first motor 2 to drive the outer stirring component to rotate, start the second motor 3 to drive the inner stirring component to rotate, and the propeller blades 1 9 and 10 are in the opposite direction to the stirring frame 11, so as to shear the raw materials and stir them more evenly. The propeller blades 1 9 and 10 stir at the same time, so that the mixed materials are even, the stirring efficiency is high, and the stirring time can be saved. Since the output shafts of the first motor 2 and the second motor 3 can be set to rotate in opposite directions, so that the inner drive shaft 7 and the outer drive shaft 12 rotate in opposite directions, the outer stirring frame 11 can scrape off the raw materials stuck on the tank wall, and the stirring plate 14 can also cooperate with the propeller blades in the opposite direction to cut the raw materials and break up the raw materials that are stuck together.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A mixer for polypropylene composite materials, comprising a mixing tank, a first motor, a second motor, an internal stirring component, and an external stirring component, characterized in that: A frame is fixed on the upper end of the mixing tank body, and a first right-angle reducer is fixed on the frame. A second right-angle reducer is fixed on the upper end of the first right-angle reducer. The first motor is connected to the first right-angle reducer by power, and the second motor is connected to the second right-angle reducer by power. The inner stirring component includes an inner drive shaft, a stirring shaft, a propeller blade 1, and a propeller blade 2. The propeller blade 1 and the propeller blade 2 are both fixedly connected to the stirring shaft. The spiral directions of the propeller blade 1 and the propeller blade 2 are opposite. The radius of the propeller blade 1 is greater than the radius of the propeller blade 2. The upper end of the stirring shaft is fixed to the lower end of the inner drive shaft, and the upper end of the inner drive shaft is connected to the second right-angle reducer by power; the outer stirring component includes a stirring frame and a hollow outer drive shaft. The outer drive shaft is sleeved outside the inner drive shaft, the upper end of the outer drive shaft is connected to the first right-angle reducer by power, and the stirring frame is fixed to the lower end of the outer drive shaft.

2. A mixer for polypropylene composite materials according to claim 1, characterized in that: The ends and the middle parts of the propeller blade 1 and the propeller blade 2 are respectively fixed on the stirring shaft through connecting rods.

3. A mixer for polypropylene composite materials according to claim 1, characterized in that: A protruding stirring plate and a scraper arranged outwardly and inclined to scrape the inner wall of the mixing tank are fixed on the inner side of the stirring frame.

4. A mixer for polypropylene composite materials according to claim 1, characterized in that: A positioning hole is provided at the lower end of the stirring frame, and the lower end of the stirring shaft is rotatably inserted into the positioning hole.

5. A mixer for polypropylene composite materials according to claim 1, characterized in that: The upper end surface of the mixing tank body is provided with a feeding end.

6. A mixer for polypropylene composite materials according to claim 1, characterized in that: The lower end of the mixing tank body is connected with a discharge port and four supporting legs, and a discharge motor is fixed to the bottom of the mixing tank body. A discharge plate is rotatably connected to the discharge port, and the output shaft of the discharge motor is connected to the discharge plate through a connecting rod assembly.

7. A mixer for polypropylene composite materials according to claim 1, characterized in that: The wall of the mixing tank is provided with an interlayer, and a heating coil is provided in the interlayer. The mixing tank body is provided with an inlet and an outlet of a heating coil.

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