Mixing device for PETG (polyethylene terephthalate glycol) production

Abstract

The utility model relates to the technical field of PETG material stirring, and provides a mixing device for PETG production, which comprises a stirring barrel, a feeding bin and a discharging bin are respectively arranged on two sides of the stirring barrel, the feeding bin is communicated with the bottom of the stirring barrel, a spiral feeding roller is arranged in the feeding bin, the bottom of the spiral feeding roller extends to the bottom of the feeding bin, and the discharging bin is communicated with the bottom of the stirring barrel. And a material return pipe and a material discharge pipe are arranged on the two sides, corresponding to the feeding bin and the material discharge bin, of the stirring barrel respectively, and electromagnetic valves are arranged in the material return pipe and the material discharge pipe so as to control the material return pipe and the material discharge pipe to be opened or closed. The stirring device overcomes the defects in the prior art, is reasonable in design and compact in structure, materials at the bottom in the feeding bin are circularly lifted upwards in a reciprocating mode into the stirring barrel to be stirred through the spiral feeding roller, the materials flow up and down and inside and outside in the stirring process, the materials in different areas can exchange positions mutually, stirring dead angles are reduced, and stirring efficiency is improved. The stirring efficiency is obviously improved; the mixing time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of PETG material stirring, in particular to a mixing device for PETG production. Background Art

[0002] PETG, as a high-performance thermoplastic polyester material, relies on stirring to achieve uniform mixing during processing. However, current mixing is mainly performed by simple stirring in a mixer. Due to differences in material properties (such as particle size, density, shape, etc.), as well as the structural characteristics of the mixing device and the limitations of process parameters, this often leads to unsatisfactory mixing results and uneven mixing. Therefore, we propose a mixing device for PETG production. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a mixing device for PETG production to solve the above problems existing in the prior art.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mixing device for PETG production, comprising a mixing drum, a feed bin and a discharge bin are respectively arranged on both sides of the mixing drum, the feed bin is connected to the bottom of the mixing drum, a spiral feeding roller is provided in the feed bin, and the bottom of the spiral feeding roller extends to the bottom of the feed bin so as to spirally lift the material in the feed bin into the mixing drum, a return pipe and a discharge pipe are respectively provided on both sides of the mixing drum corresponding to the feed bin and the discharge bin, and solenoid valves are provided in the return pipe and the discharge pipe to control their opening or closing.

[0007] Furthermore, the spiral feed roller includes a stirring shaft, and the outer wall of the stirring shaft is provided with interconnected standard blades and gradient blades in sequence from small to top, the width of the cross section of the gradient blade increases in sequence from bottom to top, and the shape of the inner cavity of the stirring drum is adapted to the shape of the spiral feed roller.

[0008] Furthermore, a pair of tracks is provided on the outer wall of the mixing drum, a baffle with a handle is slidably connected between the pair of tracks, and the mixing drum is provided with a cleaning port at the position of the baffle.

[0009] Furthermore, a cleaning valve is provided at the bottom of the feed bin to open or close the bottom of the feed bin.

[0010] Furthermore, a discharge valve is provided at the bottom of the discharge bin to open or close the bottom of the discharge bin.

[0011] (3) Beneficial effects

[0012] The embodiment of the present invention provides a mixing device for PETG production.

[0013] Beneficial effects:

[0014] The spiral feed roller reciprocates and lifts the material at the bottom of the feed bin upward to the mixing drum for mixing, so that the material forms an up-and-down and inside-and-out flow during the mixing process, allowing materials in different areas to exchange positions with each other, reducing dead angles in mixing, significantly improving mixing efficiency and shortening mixing time. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a three-dimensional schematic diagram of the back of the overall structure of the utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model.

[0018] In the figure: 1. Mixing drum; 2. Feed hopper; 21. Cleaning valve; 3. Discharge hopper; 31. Discharge valve; 4. Spiral feed roller; 41. Mixing shaft; 42. Standard blade; 43. Gradient blade; 5. Return pipe; 6. Discharge pipe; 7. Track; 8. Baffle. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, 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. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] Refer to the attached Figure 1-3 A mixing device for PETG production includes a mixing drum 1, with a feed bin 2 and a discharge bin 3 provided on both sides of the mixing drum 1. The feed bin 2 is provided at the bottom of the mixing drum 1 to facilitate the operator to add materials. The feed bin 2 is connected to the bottom of the mixing drum 1 to form a continuous material conveying channel, and the bottom of the feed bin 2 is inclined toward the mixing drum 1 to facilitate the smooth entry of materials.

[0021] A spiral feed roller 4 is installed in the feed bin 2 through a bearing, and its stirring shaft 41 is connected to the output end of the drive motor so that the spiral feed roller 4 can rotate in the feed bin 2. The bottom of the spiral feed roller 4 extends to the bottom of the feed bin 2, so as to spirally lift the material in the feed bin 2 into the mixing drum 1. A return pipe 5 and a discharge pipe 6 are respectively provided on both sides of the mixing drum 1 corresponding to the feed bin 2 and the discharge bin 3. Solenoid valves are provided in the return pipe 5 and the discharge pipe 6 to control their opening or closing.

[0022] When in use, open the solenoid valve of the return pipe 5, close the solenoid valve in the discharge pipe 6, and then add materials into the feed bin 2. Finally, start the drive motor to rotate the spiral feed roller 4. The spiral feed roller 4 lifts the material at the bottom of the feed bin 2 upward to the mixing drum 1 for stirring. The stirred material will flow back into the feed bin 2 through the return pipe 5, and then be lifted into the mixing drum 1 through the spiral feed roller 4. The reciprocating cycle allows the material to circulate inside the mixing drum 1 while being stirred. Up and down and inside and outside flows are formed during the material stirring process, so that materials in different areas can exchange positions with each other, reducing stirring dead angles, significantly improving stirring efficiency and shortening mixing time.

[0023] Furthermore, in order to avoid a large amount of dust in the air during the stirring process, a sealing cover that can be opened and closed can be provided on the top of the feed bin 2 to reduce the amount of dust that occurs.

[0024] In this embodiment, the outer wall of the stirring shaft 41 is provided with interconnected standard blades 42 and gradient blades 43 from small to top. The width of the cross section of the gradient blade 43 increases from bottom to top. The shape of the inner cavity of the stirring drum 1 is adapted to the shape of the spiral feeding roller 4. The standard blade 42 lifts the material in the feed bin 2 upward into the stirring drum 1, and then the gradient blade 43 not only lifts the material but also stirs and disperses the material, thereby greatly improving the mixing efficiency and uniformity of the material.

[0025] In this embodiment, a pair of tracks 7 are provided on the outer wall of the mixing drum 1, and a baffle 8 with a handle is slidably connected between the pair of tracks 7. The mixing drum 1 is provided with a cleaning port at the position of the baffle 8. After production is completed, the cleaning port can be opened by sliding the baffle 8 to perform cleaning and maintenance operations inside the mixing drum 1.

[0026] In this embodiment, a cleaning valve 21 is provided at the bottom of the feed bin 2 to open or close the bottom of the feed bin 2. When the material mixing is completed, the cleaning valve 21 is opened to collect the residual material in the feed bin 2.

[0027] In this embodiment, a discharge valve 31 is provided at the bottom of the discharge bin 3 to open or close the bottom of the discharge bin 3 . When the material mixing is completed, the discharge valve 31 is opened to discharge the mixed material from the discharge bin 3 .

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A mixing device for PETG production, comprising a mixing drum (1), characterized in that: A feed bin (2) and a discharge bin (3) are respectively provided on both sides of the mixing drum (1); the feed bin (2) is communicated with the bottom of the mixing drum (1); a spiral feeding roller (4) is provided in the feed bin (2); the bottom of the spiral feeding roller (4) extends to the bottom of the feed bin (2) so as to facilitate the spiral lifting of the material in the feed bin (2) into the mixing drum (1); a return pipe (5) and a discharge pipe (6) are respectively provided on both sides of the mixing drum (1) corresponding to the feed bin (2) and the discharge bin (3); and electromagnetic valves are provided in the return pipe (5) and the discharge pipe (6) to control their opening or closing.

2. A PETG production mixing device as claimed in claim 1, characterized in that: The spiral feeding roller (4) comprises a stirring shaft (41), the outer wall of the stirring shaft (41) being provided with interconnected standard blades (42) and gradient blades (43) in sequence from small to upper, the width of the cross section of the gradient blades (43) increasing in sequence from bottom to upper, and the shape of the inner cavity of the stirring drum (1) being adapted to the shape of the spiral feeding roller (4).

3. A PETG production mixing device as claimed in claim 1, characterized in that: The outer wall of the mixing drum (1) is provided with a pair of tracks (7), a baffle (8) with a handle is slidably connected between the pair of tracks (7), and the mixing drum (1) is provided with a cleaning port at the position of the baffle (8).

4. A PETG production mixing device as claimed in claim 1, characterized in that: A cleaning valve (21) is provided at the bottom of the feed bin (2) to open or close the bottom of the feed bin (2).

5. A PETG production mixing device as claimed in claim 1, characterized in that: A discharge valve (31) is provided at the bottom of the discharge bin (3) to open or close the bottom of the discharge bin (3).

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