Mixer for hollow structure wall spiral winding pipe production equipment

Abstract

A mixing machine used in hollow structure wall spiral winding pipe production equipment comprises a supporting frame, a mixing barrel installed on the supporting frame, a stirring shaft rotationally installed in the mixing barrel and a driving mechanism installed on one side of the supporting frame, the mixing barrel is transversely arranged to form a U-shaped groove structure with a top opening, materials can be poured into the mixing barrel from the top opening, and the mixing barrel is arranged in the U-shaped groove structure. The stirring shaft is transversely arranged in the material mixing barrel, the stirring shaft is driven by the driving mechanism to rotate, the multiple stirring rods extending in the radial direction are arranged on the stirring shaft, the stirring plates are arranged at the extending tail ends of the stirring rods, and materials in the material mixing barrel can be fully stirred through the transversely-arranged material mixing barrel and the multiple stirring rods; and when the stirring shaft rotates, the distance between the stirring plate and the bottom surface of the material mixing barrel does not exceed 3cm, so that even if the material is layered at the bottom, the stirring plate can stir the material, and the condition that the material is stacked at the bottom and cannot be stirred is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe production equipment, in particular to a mixer used in production equipment for spirally wound pipes with hollow structural walls. Background Art

[0002] The production of hollow-wall spiral-wound pipes relies heavily on specialized production lines and extrusion equipment. These machines process raw materials like polyethylene into hollow pipes through extrusion. The mixer, a key piece of equipment in this process, directly impacts the quality of the pipe material and production efficiency.

[0003] The production process of spirally wound pipes with hollow structural walls involves the mixing of multiple raw materials, including plastic raw materials such as high-density polyethylene (HDPE) and possible additions of modifiers and fillers. These raw materials need to be precisely proportioned and efficiently mixed to ensure the uniformity and stability of the pipe material. However, in existing pipe production equipment, the mixing device is usually located at the feed inlet at the top of the extruder, and the mixing barrel is usually arranged in a vertical direction. For details, please refer to the plastic twin-screw extruder disclosed in Chinese Utility Model Application No. 202420056571.6. However, this vertical barrel-shaped mixing device often causes stratification during mixing due to different material qualities. This results in uneven mixing of the materials. Even if the spiral blades can stir the materials in the barrel, the material between the bottom of the spiral blades and the bottom of the mixing barrel cannot be stirred, so most of the materials will still not be fully mixed. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a mixer for use in a production device for spirally wound pipes with hollow structural walls.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The mixing machine used in the production equipment of spirally wound pipes with hollow structural walls includes a support frame, a mixing barrel installed on the support frame, a stirring shaft rotatably installed in the mixing barrel, and a driving mechanism installed on one side of the support frame. The mixing barrel is arranged horizontally and has an opening at the top. The bottom of the mixing barrel is provided with a discharge port. The stirring shaft is arranged horizontally and both ends are rotatably engaged with the two end walls of the mixing barrel. One end of the stirring shaft extends out of the mixing barrel and is connected to the driving mechanism, and the other end extends out of the mixing barrel and is connected to the rotating seat on the support frame. The stirring shaft is provided with a plurality of stirring rods arranged in sequence along the axial direction and facing different angles. The stirring rods extend symmetrically to both ends after passing through the stirring shaft. The two extended ends of each stirring rod are provided with stirring plates. The driving mechanism drives the stirring shaft to rotate, and the stirring shaft drives the stirring plate to rotate around the stirring shaft through the stirring rod. During rotation, the distance between the stirring plate and the bottom surface of the mixing barrel is always no more than 3 cm.

[0007] In the present invention, the stirring plate is an arc-shaped plate structure, the stirring plates at both ends of the same stirring rod are opposite to each other, and the concave side of the stirring plate faces the rotation direction.

[0008] Furthermore, the middle portion of the stirring plate is connected to the stirring rod, and the stirring plate deviates 5°-8° to one side with the stirring rod as the axis, and the deviation directions of the stirring plates on two adjacent stirring rods are opposite.

[0009] In the utility model, the driving mechanism includes a driving frame connected to the support frame, a driving motor installed below the driving frame, and a driven wheel installed above the driving frame. The top of the driving frame is also provided with a driving wheel seat for rotatably mounting the driven wheel. After the driven wheel is rotatably mounted on the driving wheel seat, one end of the driven wheel is connected to the stirring shaft through a coupling. The driving end of the driving motor is provided with a driving wheel, and the driving wheel and the driven wheel are driven by a chain or a belt.

[0010] Furthermore, the driving wheel and the driven wheel are driven by a chain, the driving wheel and the driven wheel are sprockets, and the number of teeth of the driving wheel is smaller than the number of teeth of the driven wheel.

[0011] In the utility model, a cover plate for covering the opening at the top of the mixing barrel is provided on the top of the support frame, and one side of the cover plate is hinged to the support frame.

[0012] In the present invention, a material guide port is extended downward from the material discharge port, and a valve switch is provided on the material guide port. The valve switch is arranged on one side of the material guide port close to the material discharge port.

[0013] The utility model has the following advantages and beneficial effects:

[0014] The mixing barrel is arranged horizontally to form a U-shaped trough structure with an opening at the top, and the material can be poured into the mixing barrel from the top opening, and a stirring shaft is arranged horizontally in the mixing barrel, and the stirring shaft is driven to rotate by a driving mechanism. The stirring shaft is provided with multiple stirring rods extending in the radial direction, and a stirring plate is provided at the extended end of the stirring rod. The horizontally arranged mixing barrel and multiple stirring rods can fully stir the material in the mixing barrel, so that the material mixing is more uniform, and when the stirring shaft rotates, the distance between the stirring plate and the bottom surface of the mixing barrel does not exceed 3 cm. Therefore, even if the material is stratified at the bottom, the stirring plate can stir it to avoid the situation where the material is stratified at the bottom and cannot be stirred. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 3D is a perspective view of the mixer in this embodiment;

[0017] Figure 2 2 is a side view of the mixer in this embodiment;

[0018] Figure 3 2 is a top view of the mixer in this embodiment. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] like Figures 1 to 3 As shown, this embodiment discloses a mixer for use in a production device for spirally wound pipes with hollow structural walls, comprising a support frame 1, a mixing barrel 2 mounted on the support frame 1, a stirring shaft 3 rotatably mounted in the mixing barrel 2, and a driving mechanism 4 mounted on one side of the support frame 1. The mixing barrel 2 is arranged horizontally and has an opening at the top to form a U-shaped trough structure. A discharge port 21 is provided at the bottom of the mixing barrel 2. The stirring shaft 3 is arranged horizontally and its two ends are respectively rotatably fitted on the two end walls of the mixing barrel 2. One end of the stirring shaft 3 extends out of the mixing barrel 2 and is connected to the driving mechanism 4. The stirring shaft 3 is connected with the driving mechanism 4, and the other end extends out of the mixing barrel 2 and is connected to the rotating seat 11 on the support frame 1. The stirring shaft 3 is provided with a plurality of stirring rods 31 arranged in sequence along the axial direction and facing different angles. The stirring rods 31 extend symmetrically to both ends after passing through the stirring shaft 3. The two extended ends of each stirring rod 31 are provided with stirring plates 32. The driving mechanism 4 drives the stirring shaft 3 to rotate, and the stirring shaft 3 drives the stirring plates 32 to rotate around the stirring shaft 3 through the stirring rods 31. When rotating, the distance between the stirring plates 32 and the bottom surface of the mixing barrel 2 is always no more than 3 cm.

[0023] In this embodiment, the stirring plate 32 is an arc-shaped plate structure, and the stirring plates 32 at both ends of the same stirring rod 31 are opposite to each other. Specifically, the concave side of the stirring plate 32 faces the rotation direction. When the stirring plate 32 rotates, the concave side can effectively stir the material; in addition, in order to further improve the mixing degree, the middle part of the stirring plate 32 is connected to the stirring rod 31, and at the same time, the stirring plate 32 deviates to one side at a certain angle with the stirring rod 31 as the axis, preferably 5°-8°. Specifically, the stirring plates 32 on the two adjacent stirring rods 31 deviate in opposite directions, so that when the stirring plate 32 scoops up the material, it can be poured to one side, and the two adjacent stirring rods 31 can be stirred back and forth, further improving the material mixing effect.

[0024] In this embodiment, the driving mechanism 4 includes a driving frame 41 connected to the support frame 1, a driving motor 42 installed below the driving frame 41, and a driven wheel 43 installed above the driving frame 41. The top of the driving frame 41 is also provided with a driving wheel seat 44 for rotatably installing the driven wheel 43. After the driven wheel 43 is rotatably installed on the driving wheel seat 44, one end of the driven wheel is connected to the stirring shaft 3 through a coupling 45. The driving end of the driving motor 42 is provided with a driving wheel, and the driving wheel and the driven wheel 43 are driven by a chain; or by a belt drive. In this embodiment, chain drive is preferably used, so the driving wheel and the driven wheel 43 are sprockets. Of course, in order to increase the torque of the stirring shaft 3, the number of teeth of the driving wheel is smaller than the number of teeth of the driven wheel 43, thereby achieving a deceleration effect and increasing the torque.

[0025] In this embodiment, during the stirring process, in order to prevent the material from splashing out from the opening at the top of the mixing barrel 2, a cover plate 12 is provided on the top of the support frame 1 to cover the opening at the top of the mixing barrel 2, and one side of the cover plate 12 is hinged to the support frame 1.

[0026] In this embodiment, in order to control the discharge of the mixed material, the discharge port 21 is extended downward to form a guide port 22, and a valve switch 23 is provided on the guide port 22. Preferably, the valve switch 23 is arranged on the side of the guide port 22 close to the discharge port 21, so as to avoid the accumulation of materials in the guide port 22.

[0027] The above contents described in this specification are merely examples of the present invention. Those skilled in the art in the technical field to which the present invention belongs may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

Claims

1. A mixing machine for use in a production device for spirally wound hollow structure wall pipes, comprising a support frame (1), a mixing barrel (2) mounted on the support frame (1), a stirring shaft (3) rotatably mounted in the mixing barrel (2), and a driving mechanism (4) mounted on one side of the support frame (1), characterized in that: The mixing barrel (2) is arranged horizontally and has an opening at the top. The bottom of the mixing barrel (2) is provided with a discharge port (21). The stirring shaft (3) is arranged horizontally and its two ends are respectively rotatably engaged with the two end walls of the mixing barrel (2). One end of the stirring shaft (3) extends out of the mixing barrel (2) and is connected to the driving mechanism (4), and the other end extends out of the mixing barrel (2) and is connected to the rotating seat (11) on the support frame (1). The stirring shaft (3) is provided with a plurality of stirring rods (31) arranged in sequence along the axial direction and facing different angles. The stirring rods (31) extend symmetrically to both ends after passing through the stirring shaft (3). The two extended ends of each stirring rod (31) are provided with stirring plates (32). The driving mechanism (4) drives the stirring shaft (3) to rotate. The stirring shaft (3) drives the stirring plates (32) to rotate around the stirring shaft (3) through the stirring rods (31). When rotating, the distance between the stirring plates (32) and the bottom surface of the mixing barrel (2) is always no more than 3 cm.

2. The mixer for use in the production equipment of spirally wound hollow structure wall pipes according to claim 1, characterized in that: The stirring plate (32) is an arc-shaped plate structure. The stirring plates (32) at both ends of the same stirring rod (31) are opposed to each other, and the concave side of the stirring plate (32) faces the rotation direction.

3. The mixer for use in the production equipment of hollow structure wall spirally wound pipes according to claim 2, characterized in that: The middle portion of the stirring plate (32) is connected to the stirring rod (31), and the stirring plate (32) deviates 5°-8° to one side with the stirring rod (31) as the axis, and the deviation directions of the stirring plates (32) on two adjacent stirring rods (31) are opposite.

4. The mixer for use in the production equipment of spirally wound pipes with hollow structural walls according to claim 1, characterized in that: The driving mechanism (4) comprises a driving frame (41) connected to the support frame (1), a driving motor (42) installed below the driving frame (41), and a driven wheel (43) installed above the driving frame (41). A driving wheel seat (44) for rotatably mounting the driven wheel (43) is further provided on the top of the driving frame (41). After the driven wheel (43) is rotatably mounted on the driving wheel seat (44), one end of the driven wheel is connected to the stirring shaft (3) through a coupling (45). A driving wheel is provided at the driving end of the driving motor (42). The driving wheel and the driven wheel (43) are driven by a chain or a belt.

5. The mixer for use in the production equipment of spirally wound pipes with hollow structural walls according to claim 4, characterized in that: The driving wheel and the driven wheel (43) are driven by a chain, the driving wheel and the driven wheel (43) are sprockets, and the number of teeth of the driving wheel is smaller than the number of teeth of the driven wheel (43).

6. The mixer for use in the production equipment of spirally wound pipes with hollow structural walls according to claim 1, characterized in that: A cover plate (12) is provided on the top of the support frame (1) for covering the opening on the top of the mixing barrel (2), and one side of the cover plate (12) is hinged to the support frame (1).

7. The mixer for use in the production equipment of spirally wound pipes with hollow structural walls according to claim 1, characterized in that: A material guide port (22) extends downward from the discharge port (21), and a valve switch (23) is provided on the material guide port (22). The valve switch (23) is arranged on one side of the material guide port (22) close to the discharge port (21).

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