XPE foaming material mixing device

Abstract

The utility model discloses a kind of XPE foamed material mixing device, including mixing barrel, its top cover is equipped with feeding port and motor, the center of barrel is equipped with lifting cylinder, lifting cylinder is composed of rotationally connected barrel body and cylinder top, barrel body and cylinder top are respectively opened circulation inlet and discharge port, inside spiral lifting rod is equipped, its rotating shaft is fixedly connected with motor output end and cylinder top, to drive cylinder top rotation and scatter material;Lifting cylinder two sides are equipped with stirring assembly, stirring rod is connected with rotating shaft transmission by synchronous wheel and synchronous belt, barrel body and cylinder top connection place uses ball and track to reduce friction, mixing barrel bottom is inverted round platform shape and is equipped with discharge port;The device is through the synergic effect of spiral lifting rod and stirring assembly, form the longitudinal circulation and horizontal stirring of material, realize three-dimensional mixing, improve mixing uniformity and efficiency, structure design facilitates discharge and maintenance simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of XPE material processing technology, specifically to an XPE foam material mixing device. Background Technology

[0002] The typical production process for XPE is as follows: raw material proportioning → mixing and blending → extrusion plasticizing → foaming → crosslinking → cooling and molding. Before extrusion, the raw materials need to be thoroughly mixed using a high-speed mixer or twin-screw extruder to ensure that the additives are evenly coated on the surface of the polyethylene resin particles, forming a premix. This step ensures that the components react uniformly in the molten state during subsequent extrusion. Therefore, mixing and blending is an essential and crucial step in the production of XPE (crosslinked polyethylene) foam materials.

[0003] Existing mixing devices typically suffer from the following shortcomings: they often employ a single stirring structure, limiting the movement path of materials within the container and making it difficult to achieve comprehensive and deep mixing. This can easily lead to uneven distribution of raw materials, affecting the quality of XPE foam materials. Furthermore, they lack an effective material circulation and lifting mechanism, resulting in materials often only being mixed locally in the stirring area and accumulating at the bottom. This prevents continuous up-and-down circulation, leading to long mixing times and insufficient mixing. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of mixing devices in the XPE production process and to provide a mixing device for XPE foaming materials.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: an XPE foam material mixing device, including a mixing tank, a feeding port and a motor on the top cover of the mixing tank, a lifting cylinder at the center of the mixing tank, the lifting cylinder being divided into a rotating body and a top, the body and the top being respectively provided with a circulating feed port and a circulating discharge port, a spiral lifting rod being rotatably provided inside the lifting cylinder, the rotating shaft of the spiral lifting rod being fixedly connected to the output end of the motor, and the rotating shaft of the spiral lifting rod being fixedly connected to the top of the cylinder to drive the top of the cylinder to rotate and spread the material; stirring assemblies are provided on both sides of the lifting cylinder, and the stirring rods on the two stirring assemblies are drivenly connected to the rotating shaft.

[0006] Furthermore, the bottom of the cylinder is fixedly connected to the inner bottom surface of the mixing tank, and the bottom of the cylinder is provided with the circulating feed inlet, the top of the cylinder is provided with the circulating discharge outlet, and the top opening of the cylinder is provided with a sealing cap.

[0007] Furthermore, a groove is provided at the connection between the cylinder body and the cylinder top, and the groove is fully filled with multiple balls. Both the cylinder body and the cylinder top are provided with ball tracks for the rolling of the balls.

[0008] Furthermore, the stirring assembly includes the stirring rod, which is rotatably mounted on the top cover of the mixing tank via a bearing, and a plurality of stirring blades are evenly distributed on the stirring rod.

[0009] Furthermore, both of the stirring rods and the top of the rotating shaft are provided with synchronous pulleys, and the synchronous pulleys are connected by a synchronous belt drive.

[0010] Furthermore, the bottom of the mixing barrel is an inverted frustum shape, and a discharge port is installed on the bottom of the barrel; the mixing barrel is installed on a support base with supporting legs.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The combined design of the lifting cylinder and the spiral lifting rod allows material from the bottom of the drum to be drawn into the lifting cylinder through the circulating inlet, lifted to the top of the cylinder by the spiral lifting rod, and then evenly distributed through the circulating outlet, forming a material circulation path of "bottom inlet - top outlet". This avoids local accumulation and significantly improves the uniformity of mixing. The top of the cylinder is fixedly connected to the rotating shaft and rotates synchronously with the spiral lifting rod, allowing the material to spread in all directions during distribution and expanding the mixing range.

[0012] 2. The mixing components on both sides are connected to the rotating shaft via synchronous pulleys and synchronous belts, enabling synchronous rotation of the mixing rod and the auger lifting rod. The mixing blades create a transverse mixing flow inside the tank, which works in conjunction with the longitudinal circulating flow of the lifting cylinder to create a three-dimensional mixing effect, further improving mixing efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 A magnified view of a section at point B in the middle; Figure 4 This is an exploded view of the lifting cylinder of this utility model; Figure 5 This is a diagram showing the transmission connection between the lifting rod and the stirring rod in this utility model.

[0014] In the diagram: 1-mixing tank, 2-feeding port, 3-motor, 4-lifting cylinder, 5-lifting rod, 6-mixing assembly, 7-synchronous pulley, 8-synchronous belt, 9-discharge port, 10-support base, 41-cylinder body, 42-cylinder top, 43-circulating feed inlet, 44-circulating discharge outlet, 45-groove, 46-ball bearing, 47-ball bearing track, 51-rotating shaft, 61-mixing rod, 62-mixing blade. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0017] Combination Figures 1 to 5 The XPE foam material mixing device shown includes a mixing tank 1, a feeding port 2 and a motor 3 on the top cover of the mixing tank 1, a lifting cylinder 4 at the center of the mixing tank 1, the lifting cylinder 4 is divided into two parts, a cylinder body 41 and a cylinder top 42, which are rotatably connected. The cylinder body 41 and the cylinder top 42 are respectively provided with a circulating feed port 43 and a circulating discharge port 44. A spiral lifting rod 5 is rotatably installed inside the lifting cylinder 4. The rotating shaft 51 of the spiral lifting rod 5 is fixedly connected to the output end of the motor 3. The rotating shaft 51 of the spiral lifting rod 5 is also fixedly connected to the cylinder top 42 to drive the cylinder top 42 to rotate and spread the material. A stirring assembly 6 is provided on both sides of the lifting cylinder 4. The stirring rods 61 on the two stirring assemblies 6 are both connected to the rotating shaft 51. The bottom of the cylinder body 41 is fixedly connected to the inner bottom surface of the mixing tank 1, and a circulation inlet 43 is provided at the bottom of the cylinder body 41, and a circulation outlet 44 is provided on the top of the cylinder 42. A sealing cover is provided at the top of the cylinder 42; the rotating shaft 51 passes through the top of the cylinder 42 and is fixedly connected to the top of the mixing tank 1 and the output end of the motor 3.

[0018] like Figure 3-4As shown, a groove 45 is provided at the connection between the cylinder body 41 and the cylinder top 42. The groove 45 is fully filled with multiple balls 46. Both the cylinder body 41 and the cylinder top 42 are provided with ball tracks 47 for the rolling of the balls 46. The rotation mode is similar to that of a bearing, which greatly reduces the frictional resistance when the cylinder top 42 rotates, ensuring the smoothness of rotating and spreading materials.

[0019] like Figure 1 and Figure 5 As shown, the mixing assembly 6 includes a mixing rod 61, which is rotatably mounted on the top cover of the mixing tank 1 via a bearing. Multiple mixing blades 62 are evenly distributed on the mixing rod 61. The tops of the two mixing rods 61 and the rotating shaft 51 are equipped with synchronous pulleys 7, which are connected to each other by a synchronous belt 8. This enables the mixing rods 62 to rotate synchronously with the spiral lifting rod 5, simplifying the structure and improving the utilization of kinetic energy.

[0020] The bottom of the mixing tank 1 is an inverted frustum shape, and a discharge port 9 is installed on the bottom of the tank. The mixing tank 1 is installed on a support base 10 with support legs to improve the stability of the equipment and adapt to the industrial production environment.

[0021] Working Principle: Polyethylene resin granules, foaming agents, crosslinking agents, and other additives are fed into the mixing tank through the feeding port. The motor is then started, and its output drives the rotating shaft to rotate. This shaft simultaneously drives the spiral lifting rod and the top of the cylinder to rotate. A synchronous pulley at the top of the rotating shaft drives the synchronous pulleys of the two side stirring rods via a synchronous belt, ensuring that the stirring rods and blades rotate at the same speed, forming a multi-component coordinated transmission. When the spiral lifting rod rotates, the thrust of the spiral blades draws the material from the bottom of the mixing tank into the cylinder through the circulation inlet at the bottom of the lifting cylinder. The material is then lifted upwards along the inner wall of the lifting cylinder. Upon reaching the top, the material is discharged from the circulation outlet. Simultaneously, the rotating top of the cylinder evenly distributes the material in all directions. The stirring blades on the stirring rod rotate with the stirring rod, agitating the material in the tank. The material distributed from the top mixes thoroughly with the existing material (polyethylene resin granules and additives, etc.) in the tank under the action of the stirring blades. Meanwhile, material from the bottom is continuously drawn into the lifting cylinder, forming a "lifting-distribution-mixing" process. The cyclic process ensures that the materials are repeatedly mixed in the space; after the mixing is completed, the inverted frustum-shaped bottom of the barrel concentrates the materials to the discharge port, and the discharge port can be opened to quickly unload the materials.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An XPE foam material mixing device, comprising a mixing tank (1), wherein the top cover of the mixing tank (1) is provided with a feeding port (2) and a motor (3), characterized in that: The mixing tank (1) is provided with a lifting cylinder (4) at its center. The lifting cylinder (4) is divided into two parts: a cylinder body (41) and a cylinder top (42) that are rotatably connected. The cylinder body (41) and the cylinder top (42) are respectively provided with a circulating inlet (43) and a circulating outlet (44). The lifting cylinder (4) is provided with a spiral lifting rod (5) that is rotatably connected. The rotating shaft (51) of the spiral lifting rod (5) is fixedly connected to the output end of the motor (3). The rotating shaft (51) of the spiral lifting rod (5) is also fixedly connected to the cylinder top (42) to drive the cylinder top (42) to rotate and spread the material. Both sides of the lifting cylinder (4) are provided with stirring components (6). The stirring rods (61) on the two stirring components (6) are connected to the rotating shaft (51) for transmission.

2. The XPE foam material mixing device according to claim 1, characterized in that: The bottom of the cylinder body (41) is fixedly connected to the inner bottom surface of the mixing tank (1), and the bottom of the cylinder body (41) is provided with the circulating feed port (43), the top of the cylinder (42) is provided with the circulating discharge port (44), and the top opening of the top of the cylinder (42) is provided with a sealing cap.

3. The XPE foam material mixing device according to claim 1, characterized in that: A groove (45) is provided at the connection between the cylinder body (41) and the cylinder top (42). The groove (45) is fully filled with a plurality of balls (46). Both the cylinder body (41) and the cylinder top (42) are provided with ball tracks (47) for the balls (46) to roll.

4. The XPE foam material mixing device according to claim 1, characterized in that: The stirring assembly (6) includes the stirring rod (61), which is rotatably mounted on the top cover of the mixing tank (1) via a bearing, and a plurality of stirring blades (62) are evenly distributed on the stirring rod (61).

5. The XPE foam material mixing device according to claim 4, characterized in that: The top of both stirring rods (61) and the rotating shaft (51) are provided with synchronous pulleys (7), and the synchronous pulleys (7) are connected by a synchronous belt (8).

6. The XPE foam material mixing device according to claim 1, characterized in that: The bottom of the mixing tank (1) is an inverted frustum shape, and a discharge port (9) is installed on the bottom of the tank; the mixing tank (1) is installed on a support base (10) with support legs.

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