A hopper structure

Abstract

The utility model relates to the technical field of stirring equipment, and discloses a hopper structure, which is mainly used for the production of cast film, and specifically includes a hopper body and a stirring frame. The hopper body includes a cylindrical portion and a conical portion. The cylindrical portion is installed at the upper end opening of the conical portion and is coaxially aligned. The lower end of the stirring frame passes through the cylindrical portion and extends into the conical portion; the side wall of the conical portion is a concave arc. The utility model drives the stirring blade and the stirring rod to rotate in the hopper body through the stirring shaft, so as to stir plastic raw materials of different densities and make the feeding more uniform. The design that the bending curvature at both ends of the stirring blade is consistent with the concave curvature of the side wall of the conical portion not only facilitates the stirring and feeding of the raw materials, but also can clean the residual raw materials adhering to the inner wall of the conical portion, which is convenient for actual production operations.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring equipment, in particular to a hopper structure. Background Art

[0002] Cast film is a non-stretched, non-directional flat extruded film produced by quenching the melt. The raw material is first plasticized and melted by an extruder. It is extruded through a T-shaped structure forming die and cast in sheet form onto the roller surface of a steadily rotating cooling roller. The film is cooled and shaped on the cooling roller, and then the product is rolled up after traction and trimming.

[0003] In the production process of cast film, a hopper is needed to discharge plastic raw materials. However, most of the current hoppers are slender structures. Although the discharge is fast, it is easy to cause blockage and other problems when feeding raw materials of different densities. In addition, the discharge is not uniform, which is not conducive to actual production and processing. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a hopper structure.

[0005] The utility model provides a hopper structure, which is mainly used for the production of cast film, and specifically comprises a hopper body and a stirring frame. The hopper body comprises a cylindrical portion and a conical portion. The cylindrical portion is installed at the upper end opening of the conical portion and is coaxially aligned. The lower end of the stirring frame penetrates the cylindrical portion and extends into the conical portion.

[0006] The side wall of the tapered portion is in a concave arc shape.

[0007] As a further optimized solution of the utility model, the cylindrical portion is in a circular ring shape, and the inner diameter of the cylindrical portion is consistent with the inner diameter of the upper end opening of the conical portion.

[0008] As a further optimized solution of the utility model, the stirring frame includes a stirring shaft and a stirring blade. The lower end of the stirring shaft extends into the conical portion and is fixedly connected to the middle portion of the stirring blade. The two ends of the stirring blade are inclined and bent upward and contact the side wall of the conical portion.

[0009] As a further optimized solution of the utility model, the curvature of the two ends of the stirring blade is consistent with the concave curvature of the side wall of the tapered portion.

[0010] As a further optimized solution of the utility model, the stirring frame also includes a stirring rod, which is installed at the lower end of the stirring shaft and located above the middle of the stirring blade, and the two ends of the stirring rod are respectively fixedly connected to the curved parts on both sides of the stirring blade.

[0011] As a further optimized solution of the utility model, the upper end of the stirring frame is connected to the driving device, and the driving device drives the lower end of the stirring frame to stir the material in the hopper body.

[0012] The hopper structure proposed by the utility model has the following beneficial effects:

[0013] (1) The concave arc design of the side wall of the conical part facilitates the downward movement of the material in the conical part, thereby facilitating the actual material unloading operation;

[0014] (ii) The stirring blade and the stirring rod are driven to rotate in the hopper body by the stirring shaft so as to stir the plastic raw materials of different densities and make the feeding more uniform. The design that the curvature of the two ends of the stirring blade is consistent with the concave curvature of the side wall of the tapered portion not only facilitates the stirring and feeding of the raw materials, but also can clean the residual raw materials adhering to the inner wall of the tapered portion, facilitating the actual production operation;

[0015] (iii) By shortening the length of the tapered portion and increasing the diameter of the cylindrical portion, the hopper is distinguished from the slender shape of the traditional hopper, facilitating the actual material changing operation and improving the ease of use.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front structural schematic diagram of the utility model;

[0018] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model.

[0019] Description of the drawings: 1. Hopper body; 11. Cylindrical part; 12. Conical part; 2. Stirring frame; 21. Stirring shaft; 22. Stirring blade; 23. Stirring rod. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] See also Figure 1 and Figure 2 A hopper structure is mainly used for the production of cast film, specifically comprising a hopper body 1 and a stirring frame 2. The hopper body 1 comprises a cylindrical portion 11 and a conical portion 12. The cylindrical portion 11 is installed at the upper end opening of the conical portion 12 and is coaxially aligned. The lower end of the stirring frame 2 penetrates the cylindrical portion 11 and extends into the conical portion 12.

[0026] The conical portion 12 is in the shape of a hollow truncated cone and has openings at both the upper and lower ends. The inner diameter of the upper end of the conical portion 12 is larger than the inner diameter of the lower end, and the upper end opening of the conical portion 12 is seamlessly connected with the lower end opening of the cylindrical portion 11. The side wall of the conical portion 12 is in a concave arc shape, and an arched slope is formed on the inner wall of the conical portion 12 to facilitate material feeding.

[0027] Specifically, the cylindrical portion 11 is annular, and the inner diameter of the cylindrical portion 11 is consistent with the inner diameter of the upper end opening of the conical portion 12;

[0028] Specifically, the stirring frame 2 includes a stirring shaft 21 and a stirring blade 22, the lower end of the stirring shaft 21 extends into the conical portion 12 and is fixedly connected to the middle of the stirring blade 22, and both ends of the stirring blade 22 are inclined and bent upward and contact the side wall of the conical portion 12;

[0029] The stirring blade 22 may also have only a single-sided curved portion, and can also stir, mix and discharge the materials in the conical portion 12;

[0030] Furthermore, the curvature of the two ends of the stirring blade 22 is consistent with the concave curvature of the side wall of the tapered portion 12, so that the curved portion of the stirring blade 22 fits the arched slope of the inner wall of the tapered portion 12, which is beneficial to improving the stirring and mixing effect, and also facilitates the cleaning of the inner wall and the unloading operation;

[0031] Furthermore, the stirring frame 2 further includes a stirring rod 23, which is mounted at the lower end of the stirring shaft 21 and located above the middle of the stirring blade 22. Both ends of the stirring rod 23 are fixedly connected to the curved portions on both sides of the stirring blade 22, respectively, which is beneficial to improving the actual stirring effect, so that plastic particles of different densities are evenly mixed and convenient for feeding;

[0032] Specifically, the upper end of the stirring frame 2 is connected to a driving device, and the driving device drives the lower end of the stirring frame 2 to stir the material in the hopper body 1. The driving device can be a motor or other combined structure in the prior art;

[0033] In summary, the hopper structure proposed in the present invention facilitates the downward movement of the material in the conical portion 12 through the concave arc design of the side wall of the conical portion 12, thereby facilitating the actual material discharge operation; the stirring blade 22 and the stirring rod 23 are driven by the stirring shaft 21 to rotate in the hopper body 1, so as to stir the plastic raw materials of different densities and make the discharge more uniform. The design of the bending curvature at both ends of the stirring blade 22 being consistent with the concave curvature of the side wall of the conical portion 12 not only facilitates the stirring and discharge of the raw materials, but also can clean up the residual raw materials adhering to the inner wall of the conical portion 12, which is convenient for actual production operations; by shortening the length of the conical portion 12 and increasing the diameter of the cylindrical portion 11, the hopper is different from the slender shape of the traditional hopper, which is convenient for actual material replacement operations and improves ease of use.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hopper structure, comprising a hopper body (1) and a stirring frame (2), characterized in that: The hopper body (1) comprises a cylindrical portion (11) and a conical portion (12), the cylindrical portion (11) being mounted at the upper end opening of the conical portion (12) and being coaxially aligned, and the lower end of the stirring frame (2) passing through the cylindrical portion (11) and extending into the conical portion (12); The side wall of the tapered portion (12) is in a concave arc shape; The stirring frame (2) comprises a stirring shaft (21) and a stirring blade (22); the lower end of the stirring shaft (21) extends into the conical portion (12) and is fixedly connected to the middle portion of the stirring blade (22); the two ends of the stirring blade (22) are inclined and bent upward and are in contact with the side wall of the conical portion (12).

2. A hopper structure according to claim 1, characterized in that: The cylindrical portion (11) is annular, and the inner diameter of the cylindrical portion (11) is consistent with the inner diameter of the upper end opening of the conical portion (12).

3. A hopper structure according to claim 2, characterized in that: The curvature of the two ends of the stirring blade (22) is consistent with the concave curvature of the side wall of the conical portion (12).

4. A hopper structure according to claim 3, characterized in that: The stirring frame (2) further comprises a stirring rod (23), which is mounted at the lower end of the stirring shaft (21) and located above the middle of the stirring blade (22), and the two ends of the stirring rod (23) are respectively fixedly connected to the curved portions on both sides of the stirring blade (22).

5. A hopper structure according to claim 1, characterized in that: The upper end of the stirring frame (2) is connected to a driving device, and the driving device drives the lower end of the stirring frame (2) to stir the material in the hopper body (1).

Images