High-speed mixer for producing flame-retardant plastic

Abstract

The utility model relates to the technical field of plastics processing, and disclose a kind of high-speed mixing machine for flame-retardant plastic production, including the shell of the mixing cylinder being fixedly installed in top portion, the top end of mixing cylinder is clamped with cylinder cover, the bottom of mixing cylinder is fixedly connected with discharge pipe, valve is fixedly installed on discharge pipe, still include the drive rod of rotation connection on mixing cylinder, drive rod is hollow tubular structure, stirring paddle is fixedly connected on drive rod;The utility model is set through the setting of axial flow propelling type stirring paddle, can produce intense axial main stream circulation flow field in shell, push material circulates from below to above, can effectively prevent material stratification and agglomeration, improve the mixing efficiency of material, through the cutting knife of high-speed rotation, can be synergized with main stirring paddle operation, can efficiently crush material agglomerate, effectively improve the dispersion delicacy and mixing uniformity of material, to help improve the processing quality of flame-retardant plastic product.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically a high-speed mixer for the production of flame-retardant plastics. Background Technology

[0002] With the widespread application of flame-retardant plastics in electronics, automobiles, construction, and other fields, the requirements for their performance and production efficiency are increasing. High-speed mixers, as key equipment in the production process of flame-retardant plastics, are mainly used to rapidly and uniformly mix various components such as base resin, flame retardants, synergists, and stabilizers.

[0003] Currently, traditional high-speed mixers mainly consist of a mixing cylinder, stirring blades, and a drive motor. Materials are mixed within the mixing cylinder through shearing, collision, and friction generated by the high-speed rotating stirring blades.

[0004] However, conventional stirring blades have limited shearing and dispersing capabilities for materials. Furthermore, since flame retardants are usually powdered and have a high density, they tend to settle at the bottom of the mixing tank in the early stages of mixing. Meanwhile, base resins are mostly granular, and the two differ significantly in density and flowability, making it difficult to achieve rapid and uniform mixing. This can easily lead to stratification or agglomeration, affecting the quality of product processing.

[0005] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0006] This invention provides a high-speed mixer for the production of flame-retardant plastics. By setting up the stirring paddle, a strong axial mainstream circulating flow field can be generated in the machine casing, effectively preventing material stratification and agglomeration. Through the cutting blade, it can work in conjunction with the main stirring paddle to efficiently break up material agglomerates, improve the dispersion and mixing uniformity of the material, and improve the processing quality of flame-retardant plastic products. It solves the problem mentioned in the background art that traditional mixers are difficult to mix materials evenly during use, which leads to easy stratification or agglomeration of materials and affects the processing quality of products.

[0007] This utility model provides the following technical solution:

[0008] A high-speed mixer for flame-retardant plastic production includes a housing with a mixing cylinder fixedly mounted on the top. A cylinder cover is snapped onto the top of the mixing cylinder, and a discharge pipe is fixedly connected to the bottom of the mixing cylinder. A valve is fixedly mounted on the discharge pipe. The mixer also includes a drive rod rotatably connected to the mixing cylinder. The drive rod is a hollow tubular structure, and a stirring paddle is fixedly connected to the drive rod. The stirring paddle is located at the inner bottom of the mixing cylinder. Multiple sets of cutting blades are connected to the drive rod through a drive component. When the drive rod rotates, the drive component drives the cutting blades to rotate.

[0009] As a preferred embodiment of this utility model, a motor is fixedly installed on the top of the housing, the bottom end of the drive rod extends into the housing, and pulleys are fixedly connected to both the output end of the motor and the surface of the drive rod. The two pulleys are connected by a timing belt.

[0010] As a preferred embodiment of this utility model, the driving component includes a vertical rod fixedly connected to the bottom of the housing, the top end of the vertical rod extending into the driving rod and fixedly connected to a first bevel gear, at least two rotating rods rotatably connected to the driving rod, one end of each rotating rod extending into the driving rod and fixedly connected to a second bevel gear meshing with the first bevel gear, and the cutting blade fixedly connected to the surface of the rotating rod.

[0011] As a preferred embodiment of this utility model, the number of cutting blades is 10-26 sets, and they are arranged alternately on the outer wall of the rotating rod.

[0012] As a preferred embodiment of this utility model, a tip is fixedly connected to the top of the drive rod, and the tip is conical in shape.

[0013] As a preferred technical solution of this utility model, the stirring paddle is an axial flow propulsion structure, its blades are spirally twisted, and the installation angle is 15°-40°.

[0014] Compared with the prior art, this utility model provides a high-speed mixer for flame-retardant plastic production, which has the following advantages:

[0015] 1. In this high-speed mixer for flame-retardant plastic production, the axial flow propulsion agitator can generate a strong axial mainstream circulation field in the machine casing, which promotes the material to circulate from bottom to top, effectively preventing material stratification and agglomeration, and improving the mixing efficiency of the material.

[0016] 2. In this high-speed mixer for flame-retardant plastic production, the high-speed rotating cutting blade can work in conjunction with the main stirring paddle to form a composite shearing effect that combines macroscopic circulation with local high shearing. This can effectively break up material agglomerates, significantly improve the dispersion fineness and mixing uniformity of the materials, thereby helping to improve the processing quality of flame-retardant plastic products.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model solves the problem mentioned in the background art that traditional mixers are difficult to mix materials evenly during use, which leads to the materials easily separating or agglomerating, affecting the quality of product processing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of the mixing cylinder of this utility model;

[0023] Figure 4 This is a cross-sectional view of the drive rod structure of this utility model.

[0024] In the diagram: 1. Casing; 2. Mixing cylinder; 21. Cylinder cover; 22. Discharge pipe; 3. Drive rod; 31. Center; 4. Agitator; 5. Cutting blade; 6. Motor; 7. Pulley; 71. Timing belt; 8. Vertical pole; 9. Rotating rod; 10. First bevel gear; 11. Second bevel gear. Detailed Implementation

[0025] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are 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. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1-4 A high-speed mixer for flame-retardant plastic production includes a housing 1 with a mixing cylinder 2 fixedly mounted on the top. The outer wall of the mixing cylinder 2 is designed with a jacket layer, and the interior is equipped with heating elements such as electric heating tubes or heating wires. When current passes through, the heating elements generate heat and conduct the heat to the inner wall of the mixing cylinder 2, indirectly heating the plastic material inside the cylinder, reducing the material viscosity, and improving mixing uniformity. A cylinder cover 21 is snapped onto the top of the mixing cylinder 2, and the cylinder cover 21 is driven to lift and open / close by an electric push cylinder. A discharge pipe 22 is fixedly connected to the bottom of the mixing cylinder 2, and a valve is fixedly installed on the discharge pipe 22. The valve controls the opening and closing of the discharge pipe 22 for subsequent discharge of material from the mixing cylinder 2. The mixer also includes a drive rod 3 rotatably connected to the mixing cylinder 2. The drive rod 3 is a hollow tubular structure with an open bottom. The mixing machine has a drive rod 3 with a fixed tip 31 at the top. The tip 31 is conical in shape and is used to prevent material accumulation at the top of the drive rod 3. It can also passively break up material agglomerates in the early stage of feeding. A stirring paddle 4 is fixedly connected to the drive rod 3. The stirring paddle 4 is located at the bottom of the mixing cylinder 2. The stirring paddle 4 is an axial flow propulsion structure with spiral twisted blades and an installation angle of 15°-40°. Taking 30° as an example, when the stirring paddle 4 rotates, it generates a strong axial mainstream circulation flow field in the casing 1, which pushes the material to circulate from bottom to top. Multiple sets of cutting blades 5 are connected to the drive rod 3 through a drive component. When the drive rod 3 rotates, the drive component drives the cutting blades 5 to rotate, which can efficiently break up material agglomerates and significantly improve the dispersion fineness and mixing uniformity of the material.

[0029] Of course, in other embodiments, a motor 6 is fixedly installed on the top of the housing 1. The model can be Parker NV series or Panasonic A6 series. The bottom end of the drive rod 3 extends into the housing 1. The output end of the motor 6 and the surface of the drive rod 3 are both fixedly connected to pulleys 7. The two pulleys 7 are connected by a timing belt 71. The drive component includes a vertical rod 8 fixedly connected to the bottom of the housing 1. The top end of the vertical rod 8 extends into the drive rod 3 and is fixedly connected to a first bevel gear 10. At least two rotating rods 9 are rotatably connected to the drive rod 3. One end of the rotating rod 9 extends into the drive rod 3 and is fixedly connected to a second bevel gear 11 that meshes with the first bevel gear 10. The cutting blade 5 is fixedly connected to the surface of the rotating rod 9. The number of cutting blades 5 is 10-26 sets, and they are staggered on the outer wall of the rotating rod 9. This mixer preferably has 16 sets, which can ensure cutting efficiency.

[0030] Specifically, during use, the motor 6 is started, driving the pulley 7 and drive rod 3 to rotate. Simultaneously, the stirring paddle 4 is driven to mix and stir the various components added inside the casing 1, creating a strong axial mainstream circulation field inside the casing 1. This propels the materials to circulate from bottom to top, effectively preventing material stratification and agglomeration, and improving the mixing efficiency. Furthermore, when the drive rod 3 rotates, it also drives the upright rod 8 and the cutting blade 5 to revolve around the axis of the drive rod 3, while simultaneously driving the second bevel gear 11 to move along the teeth of the first bevel gear 10. This causes the upright rod 8 and the cutting blade 5 to rotate at high speed, working in conjunction with the main stirring paddle 4 to form a composite shearing effect that combines macroscopic circulation with local high shearing. This effectively breaks up material agglomerates, significantly improving the dispersion fineness and mixing uniformity of the materials, thereby helping to improve the processing quality of flame-retardant plastic products.

[0031] Components not described in detail in this article are existing technologies and will not be elaborated upon here.

[0032] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-speed mixer for producing flame-retardant plastics, comprising a housing (1) with a mixing cylinder (2) fixedly mounted on its top, a cylinder cover (21) snapped onto the top of the mixing cylinder (2), a discharge pipe (22) fixedly connected to the bottom of the mixing cylinder (2), and a valve fixedly mounted on the discharge pipe (22), characterized in that, It also includes a drive rod (3) rotatably connected to the mixing cylinder (2), the drive rod (3) being a hollow tubular structure. The drive rod (3) is fixedly connected to a stirring paddle (4), which is located at the bottom of the mixing cylinder (2). Multiple sets of cutting blades (5) are connected to the drive rod (3) through a driving component. When the drive rod (3) rotates, the driving component drives the cutting blades (5) to rotate.

2. The high-speed mixer for flame-retardant plastic production according to claim 1, characterized in that, A motor (6) is fixedly installed on the top of the housing (1), and the bottom end of the drive rod (3) extends into the housing (1). The output end of the motor (6) and the surface of the drive rod (3) are both fixedly connected to pulleys (7), and the two pulleys (7) are connected by a timing belt (71).

3. The high-speed mixer for flame-retardant plastic production according to claim 1, characterized in that, The drive unit includes a vertical rod (8) fixedly connected to the bottom of the housing (1). The top end of the vertical rod (8) extends into the drive rod (3) and is fixedly connected to a first bevel gear (10). At least two rotating rods (9) are rotatably connected to the drive rod (3). One end of the rotating rod (9) extends into the drive rod (3) and is fixedly connected to a second bevel gear (11) that meshes with the first bevel gear (10). The cutting blade (5) is fixedly connected to the surface of the rotating rod (9).

4. A high-speed mixer for producing flame-retardant plastics according to claim 3, characterized in that, The number of cutting blades (5) is 10-26 sets, and they are arranged alternately on the outer wall of the rotating rod (9).

5. A high-speed mixer for producing flame-retardant plastics according to claim 1, characterized in that, The top of the drive rod (3) is fixedly connected to a tip (31), which is conical in shape.

6. A high-speed mixer for producing flame-retardant plastics according to claim 1, characterized in that, The stirring paddle (4) is an axial flow propulsion structure with its blades spirally twisted and installed at an angle of 15°-40°.

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