EVA (Ethylene Vinyl Acetate) glue heating pipeline

Abstract

The utility model discloses an EVA (Ethylene Vinyl Acetate) glue heating pipeline, which relates to the field of EVA glue film production equipment and comprises a shell and a pipeline arranged in the shell, a spiral heat exchange sheet is arranged on the outer wall of the pipeline, a heating coil is spirally arranged on the outer wall of the pipeline on one side of the spiral heat exchange sheet, and the outer wall on one side of the spiral heat exchange sheet is attached to the outer wall of the heating coil. The heating coil is spirally arranged on the outer wall of the pipeline, the spiral heat exchange piece is arranged on the outer wall of the pipeline in a matched mode, and the outer wall of one side of the spiral heat exchange piece is attached to the outer wall of the heating coil, so that when the pipeline is heated by the heating coil, the spiral heat exchange piece also absorbs heat generated by the heating coil, and the heat generated by the heating coil is dissipated. And therefore, the effect of uniformly heating the pipeline is realized.

Description

Technical Field

[0001] The utility model relates to the field of EVA adhesive film production equipment, in particular to an EVA adhesive heating pipeline. Background Art

[0002] In the existing EVA film manufacturing process, the process of pressing the rubber particles into the pipe and then heating and melting is adopted. However, since EVA glue is a poor conductor of heat, the heating process may cause local uneven heating, which in turn affects the quality of the film. Utility Model Content

[0003] The utility model aims to provide an EVA adhesive heating pipe to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: an EVA glue heating pipe, comprising a shell and a pipe arranged in the shell, a spiral heat exchange plate is arranged on the outer wall of the pipe, a heating coil is spirally arranged on the outer wall of the pipe on one side of the spiral heat exchange plate, and the outer wall of one side of the spiral heat exchange plate is in contact with the outer wall of the heating coil.

[0005] Furthermore, it also includes a cooling pipe, there are two spiral heat exchanger plates, and the ends of the spiral heat exchanger plates are symmetrically arranged on the outer wall of the pipe, and heating coils and cooling pipes are spirally arranged on the outer walls of the pipe on both sides of one of the spiral heat exchanger plates, and the outer walls on the same side of the two spiral heat exchanger plates are respectively fitted with the outer walls of the heating coils and the cooling pipes.

[0006] Furthermore, a connecting strip is spirally provided on the outer wall of the pipe, a connecting groove is provided on the side wall of the spiral heat exchange plate close to the outer wall of the pipe, and the outer wall of the connecting strip fits and is slidably connected to the inner wall of the connecting groove.

[0007] Furthermore, the cross section of the connecting groove is T-shaped.

[0008] The beneficial effect achieved by the utility model is as follows: by spirally arranging a heating coil on the outer wall of the pipeline, cooperating with a spiral heat exchange plate arranged on the outer wall of the pipeline, and making the outer wall of one side of the spiral heat exchange plate fit with the outer wall of the heating coil, so that when the pipeline is heated by the heating coil, the spiral heat exchange plate also absorbs the heat generated by the heating coil and acts on the pipeline, thereby achieving the effect of uniform heating of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic structural diagram of an EVA adhesive heating pipe end face in Example 1;

[0010] Figure 2 This is a schematic structural diagram of an EVA adhesive heating pipe end face in Example 2;

[0011] Figure 3 This is a diagram showing the outer wall of the pipeline in Example 2;

[0012] Figure 4 for Figure 2 A local enlarged schematic diagram of point a in the middle. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] Embodiment 1

[0015] like Figure 1 As shown, embodiment 1 discloses an EVA glue heating pipe, comprising: a shell 1 and a pipe 2 arranged in the shell 1, a spiral heat exchange plate 3 is arranged on the outer wall of the pipe 2, a heating coil 4 is spirally arranged on the outer wall of the pipe 2 on one side of the spiral heat exchange plate 3, and the outer wall on one side of the spiral heat exchange plate 3 is fitted with the outer wall of the heating coil 4.

[0016] The heating coil 4 is connected to an external controller (shown in the drawing).

[0017] Based on the above structure, Figure 1 As shown, when in use, the heating coil 4 spirally arranged on the outer wall of the pipe 2 heats the outer wall of the pipe 2, and at the same time the spiral heat exchange plate 3 also absorbs the heat generated by the heating coil 4 and acts on the pipe 2, thereby achieving the effect of uniform heating of the pipe 2.

[0018] Embodiment 2

[0019] At present, in the EVA production process, EVA particles are dissolved into molten colloid in the heating pipe. The heating pipe is usually heated by electricity. Heat accumulation is easy to form during electric heating, and it is difficult to control the temperature. Too high or too low temperature will affect the quality of EVA film. In order to solve the above problems:

[0020] like Figure 2 and 3 As shown, the technical feature that distinguishes Example 2 from Example 1 is that it also includes a cooling tube 5, there are two spiral heat exchange plates 3, and the ends of the spiral heat exchange plates 3 are symmetrically arranged on the outer wall of the pipe 2, and the heating coil 4 and the cooling tube 5 are spirally arranged on the outer wall of the pipe 2 on both sides of one of the spiral heat exchange plates 3, and the outer walls on the same side of the two spiral heat exchange plates 3 are respectively fitted with the outer walls of the heating coil 4 and the cooling tube 5.

[0021] The cooling pipe 5 is connected to an external refrigeration device (not shown in the drawing).

[0022] A temperature sensor is provided in the pipe 2 (shown in the drawing).

[0023] Based on the above structure, Figure 2 and 3 As shown, when the temperature of the pipe 2 is too high and needs to be cooled, the heating coil 4 stops working, and the cooling pipe 5 starts working to cool the pipe 2;

[0024] When the temperature of the pipe 2 is too low, the cooling pipe 5 stops working, the heating coil 4 starts working, and the temperature of the pipe 2 is increased;

[0025] Two spiral heat exchanger plates 3 are symmetrically arranged at the ends, so that the side wall of one of the spiral heat exchanger plates 3 close to the output end of the pipe 2 and the side wall of the other spiral heat exchanger plate 3 away from the output end of the pipe 2 form a spiral channel for accommodating the heating coil 4, and the side wall of one of the spiral heat exchanger plates 3 away from the output end of the pipe 2 and the side wall of the other spiral heat exchanger plate 3 close to the output end of the pipe 2 form another spiral channel for accommodating the cooling tube 5, thereby separating the heating coil 4 and the cooling tube 5, so that when the heating coil 4 or the cooling tube 5 is started, it will not affect the other (loss of metal crystal structure caused by rapid switching between hot and cold).

[0026] Further, such as Figure 2 As shown, in order to facilitate the maintenance of the spiral heat exchanger plate and thus reduce costs, a connecting strip 21 is spirally provided on the outer wall of the pipe 2, and a connecting groove 31 is provided on the side wall of the spiral heat exchanger plate 3 close to the outer wall of the pipe 2, and the outer wall of the connecting strip 21 is fitted and slidably connected to the inner wall of the connecting groove 31.

[0027] Further, such as Figure 4 As shown, in order to increase the connectivity between the connection groove and the connection bar, the cross section of the connection groove 31 is T-shaped.

[0028] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An EVA adhesive heating pipe, comprising a shell (1) and a pipe (2) arranged in the shell (1), characterized in that: A spiral heat exchange plate (3) is arranged on the outer wall of the pipeline (2), a heating coil (4) is spirally arranged on the outer wall of the pipeline (2) on one side of the spiral heat exchange plate (3), and the outer wall on one side of the spiral heat exchange plate (3) is in contact with the outer wall of the heating coil (4).

2. The EVA adhesive heating pipe according to claim 1, characterized in that: It also includes a cooling pipe (5), wherein there are two spiral heat exchange fins (3), and the ends of the spiral heat exchange fins (3) are symmetrically arranged on the outer wall of the pipe (2), and a heating coil (4) and a cooling pipe (5) are respectively spirally arranged on the outer wall of the pipe (2) on both sides of one of the spiral heat exchange fins (3), and the outer walls of the two spiral heat exchange fins (3) on the same side are respectively in contact with the outer walls of the heating coil (4) and the cooling pipe (5).

3. An EVA adhesive heating pipe according to any one of claims 1-2, characterized in that: A connecting strip (21) is spirally arranged on the outer wall of the pipeline (2), a connecting groove (31) is arranged on the side wall of the spiral heat exchange plate (3) close to the outer wall of the pipeline (2), and the outer wall of the connecting strip (21) is fitted with the inner wall of the connecting groove (31) and is slidably connected.

4. The EVA adhesive heating pipe according to claim 3, characterized in that: The cross section of the connecting groove (31) is T-shaped.

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