Mixing device for producing degradable environment-friendly polymer composite material

Abstract

The utility model discloses a material mixing device for producing a degradable environment-friendly polymer composite material, and relates to the field of material mixing devices, the material mixing device for producing the degradable environment-friendly polymer composite material comprises a stirring kettle, a material mixing barrel is fixed in the center of an inner cavity of the stirring kettle, the material mixing barrel is longitudinally arranged in a hollow manner, and the material mixing barrel is provided with a material mixing cavity. An auger is rotationally mounted on the inner wall of the mixing barrel; according to the material mixing device for producing the degradable environment-friendly polymer composite material, the material mixing barrel is arranged in the center of the stirring kettle, and structures such as the packing auger, the rotating shaft and the stirring blades are arranged in a matched manner, so that main materials and auxiliary materials can be stirred around the axis of the stirring kettle in a primary mixing stage; according to the stirring and mixing device, materials on the upper layer and materials on the lower layer in the mixing barrel are exchanged, the materials on the lower layer are promoted to continuously flow into the upper layer, and therefore the space dimension of stirring and mixing is increased, the stirring and mixing effect is greatly improved compared with the prior art, and then the stirring and mixing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mixing devices, and in particular to a mixing device for the production of biodegradable and environmentally friendly polymer composite materials. Background Technology

[0002] In the synthesis of biodegradable polymer materials, some raw material intermediates or prepolymers may exist in liquid form. For example, in the production of polylactic acid (PLA), lactic acid extracted from raw materials such as corn is a colorless and transparent liquid. When preparing biodegradable composite materials using solution mixing, each component is dissolved in an appropriate solvent to form a liquid solution. After mixing, sedimentation, drying, and other processes by mixing equipment, the final composite material is obtained. Existing mixing equipment used in this process has the problem of poor mixing effect, requiring extended mixing time to ensure the mixing effect. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a mixing device for the production of biodegradable and environmentally friendly polymer composite materials, which solves the problems of poor mixing effect and low mixing efficiency in the synthesis process of liquid biodegradable polymer materials in the prior art.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0005] A mixing device for the production of biodegradable and environmentally friendly polymer composite materials includes a mixing tank, a mixing cylinder fixed at the center of the inner cavity of the mixing tank, the mixing cylinder being longitudinally hollow, and an auger being rotatably installed on the inner wall of the mixing cylinder.

[0006] The inner cavity of the mixing vessel is equipped with a stirring assembly. The stirring end of the stirring assembly is arranged in a shape that surrounds the mixing cylinder. The rotating end of the stirring assembly is connected to the top of the auger through a one-way transmission structure.

[0007] Preferably, a plurality of connecting strips are fixed at equal angular intervals on the lower outer wall of the mixing cylinder, and the lower ends of the connecting strips are fixed to the bottom surface of the inner wall of the mixing vessel.

[0008] Preferably, the connecting strips are arranged in an expanding state from top to bottom.

[0009] Preferably, the upper and lower edges of the mixing cylinder are both formed with flared openings in the shape of a trumpet.

[0010] Preferably, the stirring assembly includes a rotating shaft rotatably connected to the center of the top surface of the stirring vessel via a bearing. A motor is fixed at the center of the top surface of the stirring vessel. The upper end of the rotating shaft is connected to the output end of the motor. The rotating shaft is the rotating end of the stirring assembly. The lower end of the rotating shaft extends into the inner cavity of the stirring vessel. The top end of the auger is connected to the lower end of the rotating shaft via a one-way bearing. A plurality of stirring blades are fixed at equal angular intervals on the outer wall of the lower end of the rotating shaft. The plurality of stirring blades surround the outside of the mixing cylinder, enclosing the mixing cylinder.

[0011] Preferably, the stirring blade consists of a mounting strip fixed to the rotating shaft and a stirring plate fixed to the outer wall of the mounting strip. The stirring plate has a plurality of through grooves formed at equal intervals, and the lower ends of the plurality of mounting strips are fixed with connecting rings.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. This utility model, by setting a mixing cylinder at the center of the mixing tank, and in conjunction with the auger, rotating shaft and stirring blades, enables the main and auxiliary materials to be stirred around the axis of the mixing tank during the initial mixing stage. This allows the materials in the upper and lower layers of the mixing cylinder to exchange, increasing the flow of lower material into the upper layer. This increases the spatial dimension of mixing, greatly improving the mixing effect and efficiency compared to the prior art.

[0014] 2. This utility model utilizes a one-way bearing to connect the rotating shaft and the auger, thereby allowing selective mixing of the upper and lower layers of materials. Specifically, during high-speed premixing at the end of the mixing stage, mixing can be achieved solely by the height rotation of the stirring blades without driving the auger to rotate, thus preventing the auger from hindering the high-speed mixing motion. Furthermore, for mixing materials that do not require upper and lower layer mixing, this provides an option to avoid driving the auger to rotate, improving the adaptability of the equipment and avoiding unnecessary wear and tear on the auger and unnecessary energy waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the inner structure of the stirring vessel of this utility model;

[0017] Figure 3 This is a schematic diagram of the auger structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotating shaft structure of this utility model;

[0019] Reference numerals in the attached drawings: 1. Mixing vessel; 2. Mixing cylinder; 3. Connecting strip; 4. Flange; 5. Screwdriver; 6. Rotating shaft; 7. Motor; 8. Mixing blade; 9. Mounting strip; 10. Stirring plate; 11. Through groove; 12. Connecting ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 4This embodiment provides a mixing device for the production of biodegradable and environmentally friendly polymer composite materials, including a mixing tank 1. The top of the mixing tank 1 is provided with a feed inlet for feeding main materials and auxiliary materials; the bottom is provided with a discharge outlet, and a valve can be installed at the discharge outlet to control the discharge of materials. A mixing cylinder 2 is fixed at the center of the inner cavity of the mixing tank 1. The mixing cylinder 2 is longitudinally hollow. Four connecting strips 3 are fixed at equal angles on the lower outer wall of the mixing cylinder 2. The lower ends of the connecting strips 3 are fixed to the bottom surface of the inner wall of the mixing tank 1. The four connecting strips 3 are in an expanding state from top to bottom. The upper and lower edges of the mixing cylinder 2 are both formed with funnel-shaped flares 4, which guide the materials into the mixing cylinder 2. An auger 5 is rotatably mounted on the inner wall of the mixing cylinder 2. A rotating shaft 6 is rotatably connected to the center of the top surface of the mixing vessel 1 via a bearing. A motor 7 is fixed at the center of the top surface of the mixing vessel 1. The upper end of the rotating shaft 6 is connected to the output end of the motor 7, and the lower end of the rotating shaft 6 extends into the inner cavity of the mixing vessel 1. The top of the auger 5 is connected to the lower end of the rotating shaft 6 via a one-way bearing, which constitutes a one-way transmission structure. Three stirring blades 8 are fixed at equal angular intervals on the outer wall of the lower end of the rotating shaft 6. The three stirring blades 8 surround the mixing cylinder 2, and the mixing has two states: First, the drive motor 7 rotates in the forward direction, driving the rotating shaft 6 to rotate, so that the three stirring blades 8 stir the material in the mixing vessel 1 for mixing. In this rotation direction, the rotating shaft 6 can drive the auger through the one-way bearing. 5. As the auger 5 rotates, it simultaneously drives the material from the lower layer inside the mixing vessel 1 through the mixing cylinder 2 to the upper layer inside the mixing vessel 1. In this way, while mixing in the circumferential direction, it also mixes and stirs the material from top to bottom, increasing the dimensionality of the mixing and thus improving the mixing effect and efficiency. Secondly, the drive motor 7 rotates in the opposite direction at high speed, driving the three stirring blades 8 to rotate at high speed inside the mixing vessel 1 for high-intensity mixing. In this state, the auger 5 does not rotate, thus only performing high-intensity, single-dimensional stirring. This provides an option to not drive the auger 5 to rotate, improving the adaptability of the equipment. In the mixing stage where the rotation of the auger 5 is not required, or when the mixed material does not require mixing from top to bottom, unnecessary wear and tear on the auger 5 and unnecessary waste of energy are avoided. The stirring blade 8 consists of a mounting strip 9 fixed to the rotating shaft 6 and a stirring plate 10 fixed to the outer wall of the mounting strip 9. Several through grooves 11 are formed at equal intervals on the stirring plate 10. Connecting rings 12 are fixed to the lower ends of several mounting strips 9. The connecting rings 12 enable the three stirring blades 8 to form a whole, which improves the stability and strength of the stirring blade 8 installation.In summary, this utility model has the following beneficial effects: During the initial mixing stage of the main and auxiliary materials, while stirring around the axis of the mixing vessel 1, the materials in the upper and lower layers of the mixing cylinder 2 are exchanged, increasing the continuous influx of lower layer materials into the upper layer, increasing the spatial dimension of mixing, improving the mixing effect, and thus improving the mixing efficiency. This allows for selective mixing between the upper and lower layers of materials. That is, at the end of the mixing stage, when performing high-speed premixing, the stirring can be carried out solely by the height rotation of the stirring blades 8 without driving the auger 5 to rotate, thus avoiding the auger 5 from hindering the high-speed stirring motion. Furthermore, for some materials that do not require upper and lower layer mixing, it provides an option to not drive the auger 5 to rotate, improving the adaptability of the equipment and avoiding unnecessary wear and tear on the auger 5 and unnecessary waste of energy.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for the production of biodegradable and environmentally friendly polymer composite materials, comprising a stirring tank, characterized in that, A mixing cylinder is fixed at the center of the inner cavity of the mixing tank. The mixing cylinder is arranged in a longitudinal hollow shape, and an auger is rotatably installed on the inner wall of the mixing cylinder. The inner cavity of the mixing vessel is equipped with a stirring assembly. The stirring end of the stirring assembly is arranged in a shape that surrounds the mixing cylinder. The rotating end of the stirring assembly is connected to the top of the auger through a one-way transmission structure.

2. The mixing device for producing biodegradable and environmentally friendly polymer composite materials according to claim 1, characterized in that, Several connecting strips are fixed at equal angular intervals on the lower outer wall of the mixing cylinder, and the lower ends of the connecting strips are fixed to the bottom surface of the inner wall of the mixing tank.

3. The mixing device for producing biodegradable and environmentally friendly polymer composite materials according to claim 2, characterized in that, Several of the connecting strips are in a state of expansion from top to bottom.

4. The mixing device for producing biodegradable and environmentally friendly polymer composite materials according to claim 1, characterized in that, The mixing cylinder has flared, funnel-shaped openings at both its upper and lower edges.

5. The mixing device for producing biodegradable and environmentally friendly polymer composite materials according to claim 1, characterized in that, The stirring assembly includes a rotating shaft rotatably connected to the center of the top surface of the stirring vessel via a bearing. The rotating shaft is the rotating end of the stirring assembly. A motor is fixed at the center of the top surface of the stirring vessel. The upper end of the rotating shaft is connected to the output end of the motor. The lower end of the rotating shaft extends into the inner cavity of the stirring vessel. The top end of the auger is connected to the lower end of the rotating shaft via a one-way bearing. Several stirring blades are fixed at equal angular intervals on the outer wall of the lower end of the rotating shaft. The several stirring blades surround the mixing cylinder and enclose the mixing cylinder.

6. The mixing device for producing biodegradable and environmentally friendly polymer composite materials according to claim 5, characterized in that, The stirring blade consists of a mounting strip fixed to the rotating shaft and a stirring plate fixed to the outer wall of the mounting strip. The stirring plate has several through grooves formed at equal intervals, and the lower ends of several mounting strips are fixed with connecting rings.

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