A resin vacuum suction pipe

Abstract

This utility model discloses a resin vacuum suction pipe, including an outer pipe, an inner pipe, multiple sets of support components, and connecting components. The inner pipe is located inside the outer pipe, and multiple sets of support components are connected at equal intervals between the outer wall of the inner pipe and the inner wall of the outer pipe. The two ends of the outer pipe and the inner pipe are connected by the connecting components. Multiple oblique holes are formed on the inner pipe. The support components include sintered metal porous support rings, which are disposed between the outer wall of the inner pipe and the inner wall of the outer pipe. The connecting components include retaining rings, and the ends of the outer pipe and the inner pipe are connected by the retaining rings. The purpose of this utility model is to overcome the shortcomings of existing methods and provide a resin vacuum suction pipe that avoids the generation of static electricity and dust; it also enables the pipe to have a self-cleaning function, making it convenient and quick to use.

Description

Technical Field

[0001] This utility model relates to a resin vacuum suction pipe. Background Technology

[0002] In the resin processing industry, granular resin is typically conveyed via vacuum suction before entering the extruder. However, in existing resin conveying pipelines, the granular resin easily rubs against the pipeline wall during transport, leading to static electricity or dust. This static electricity and dust negatively impact product quality, especially for functional film products with high requirements for crystal point impurities. Furthermore, existing conveying pipelines often lack effective self-cleaning capabilities. After prolonged use, resin particles or dust may remain inside the pipeline, requiring manual cleaning, which is time-consuming, labor-intensive, and may affect production efficiency. Therefore, there is an urgent need for a new type of resin conveying pipeline that can prevent friction between the resin and the pipeline wall, reduce static electricity and dust generation, and possess self-cleaning capabilities.

[0003] CN204866731U discloses a conveying pipe for plastic particles. The key technical points are: it includes a vertically aligned inner pipe and an outer pipe arranged concentrically; the upper end of the inner pipe has a feed inlet, and the lower end has a discharge outlet; the side wall of the outer pipe has an air inlet and an air outlet, with the discharge outlet located between the air inlet and outlet; and an anti-static fan is installed inside the inner pipe. This invention solves the problem of difficulty in separating plastic particles from dust in existing conveying pipes for plastic particles. However, this technical solution cannot avoid the frictional static electricity and dust generated between the plastic particles (resin) and the pipe wall during conveying, and the design of an anti-static fan inside the pipe is not suitable for long-distance resin conveying.

[0004] Therefore, a resin vacuum suction pipe is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing materials by providing a resin vacuum suction pipe that avoids the generation of static electricity and dust; it also enables the pipe to have a self-cleaning function, making it convenient and quick.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a resin vacuum suction pipe, comprising an outer pipe, an inner pipe, multiple sets of support components and connecting components;

[0007] The inner pipe is located inside the outer pipe, and multiple sets of the support components are connected at equal intervals between the outer wall of the inner pipe and the inner wall of the outer pipe. The two ends of the outer pipe and the inner pipe are connected by the connecting components.

[0008] The inner pipe has multiple oblique holes.

[0009] Preferably, the support assembly includes a sintered metal porous support ring, which is disposed between the outer wall of the inner pipe and the inner wall of the outer pipe.

[0010] Preferably, the connecting component includes a retaining ring, and the ports of the outer pipe and the inner pipe are connected by the retaining ring.

[0011] Preferably, a compressed air port is provided on the side wall of the outer pipe, and the outer end of the compressed air port is connected to an air source.

[0012] Preferably, the angle between the oblique hole and the vacuum suction direction is 30 degrees.

[0013] Preferably, the outer end of the compressed air port is connected to an ion generator, and the ion generator is connected to a power source.

[0014] Preferably, both the outer and inner pipes are made of stainless steel.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This resin vacuum suction pipe, through the sandwich structure of an inner and outer pipe and the support of a sintered metal porous support ring, ensures the stability of the pipe and the uniformity of the sandwich space. The combined use of the oblique holes in the inner pipe and compressed air allows the granular resin to be suspended inside the pipe during transportation, avoiding friction with the pipe wall, reducing static electricity and dust generation, and improving product quality. It is especially suitable for the production of functional thin film products with high requirements for crystal point impurities. At the same time, by adjusting the pressure of the compressed air, the pipe can achieve a self-cleaning function, which is convenient and quick, improves production efficiency, and reduces maintenance costs. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the resin vacuum suction pipe of this utility model.

[0018] In the diagram: 1. Outer pipe; 2. Inner pipe; 3. Angled hole; 4. Sintered metal porous support ring; 5. Snap ring; 6. Compressed air port. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 A resin vacuum suction pipe includes an outer pipe 1, an inner pipe 2, multiple sets of support components and connecting components; the inner pipe 2 is located inside the outer pipe 1, and multiple sets of support components are connected at equal intervals between the outer wall of the inner pipe 2 and the inner wall of the outer pipe 1, and the two ends of the outer pipe 1 and the inner pipe 2 are connected by connecting components; both the outer pipe 1 and the inner pipe 2 are made of stainless steel and have the characteristics of corrosion resistance and wear resistance.

[0021] Specifically, multiple oblique holes 3 are formed on the inner pipe 2. The angle between the oblique holes 3 and the vacuum suction direction is 30 degrees.

[0022] Specifically, the length of the resin vacuum suction pipe is preferably within 10 meters.

[0023] Specifically, the support assembly includes a sintered metal porous support ring 4, which is disposed between the outer wall of the inner pipe 2 and the inner wall of the outer pipe 1. Multiple sintered metal porous support rings 4 are spaced 3-5 meters apart. The sintered metal porous support ring 4 possesses a certain strength and permeability, ensuring a stable distance between the outer pipe 1 and the inner pipe 2 without affecting the flow of compressed air.

[0024] Specifically, the connecting components include a retaining ring 5, which connects the ports of the outer pipe 1 and the inner pipe 2.

[0025] Specifically, a compressed air port 6 is provided on the side wall of the outer pipe 1, and the outer end of the compressed air port 6 is connected to an air source. The outer end of the compressed air port 6 is connected to an ion generator, and the ion generator is connected to a power source.

[0026] Specifically, the inner pipe 2 has evenly distributed oblique holes 3 on its wall, with the direction of the oblique holes 3 forming an acute angle with the vacuum suction direction, for example, 30 degrees. The interlayer space between the outer pipe 1 and the inner pipe 2 is connected to a compressed air source through a compressed air port 6. The compressed air source is connected to the compressed air port 6 on the outer pipe and can provide compressed air at a pressure of 0.05 MPa to 0.5 MPa. During normal conveying of granular resin, the compressed air source is turned on, and compressed air enters the interlayer space and is ejected through the oblique holes 3 of the inner pipe 2, forming an air cushion in the inner pipe 2 that is aligned with the vacuum suction direction. The compressed air pressure is set to 1.1 to 1.2 times the vacuum suction force, allowing the granular resin to be suspended and conveyed under the action of the air cushion, avoiding friction with the pipe wall. This prevents the generation of static electricity and dust, improving product quality.

[0027] Specifically, for resins with strong static electricity, compressed air can be ionized first using an ion generator. The ion generation frequency can be 50 to 50,000 times per minute. The ionized air can greatly reduce the static voltage of the resin, which is conducive to the separation of statically adsorbed powder and resin, and enhances the vacuum material suction and dust removal effect.

[0028] Specifically, when the pipeline needs to be self-cleaned, simply adjust the pressure of the compressed air to above 0.3 MPa. At this time, the high-pressure compressed air is sprayed out through the inclined hole 3, which can effectively blow away the residual powder on the inner wall of the inner pipe 2, thus achieving the self-cleaning function. There is no need for manual disassembly and cleaning, saving time and labor costs.

[0029] This resin vacuum feeding pipe, through its sandwich structure of inner and outer pipes and the support of a sintered metal porous support ring, ensures the stability of the pipe and the uniformity of the sandwich space. The combined use of the oblique holes 3 in the inner pipe and compressed air allows the granular resin to remain suspended within the pipe during transport, avoiding friction with the pipe wall, reducing static electricity and dust generation, and improving product quality. It is particularly suitable for the production of functional thin film products with high requirements for crystal point impurities. Simultaneously, by adjusting the compressed air pressure, the pipe can achieve a self-cleaning function, which is convenient and quick, improving production efficiency and reducing maintenance costs.

[0030] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A resin vacuum suction pipe, characterized in that, Includes an outer pipe (1), an inner pipe (2), multiple sets of support components and connecting components; The inner pipe (2) is located inside the outer pipe (1). Multiple sets of the support components are connected at equal distances between the outer wall of the inner pipe (2) and the inner wall of the outer pipe (1). The two ends of the outer pipe (1) and the inner pipe (2) are connected by the connecting components. Multiple oblique holes (3) are opened on the inner pipe (2).

2. The resin vacuum suction pipe according to claim 1, characterized in that, The support assembly includes a sintered metal porous support ring (4), which is disposed between the outer wall of the inner pipe (2) and the inner wall of the outer pipe (1).

3. The resin vacuum suction pipe according to claim 1, characterized in that, The connection assembly includes a retaining ring (5), through which the ports of the outer pipe (1) and the inner pipe (2) are connected.

4. The resin vacuum suction pipe according to claim 1, characterized in that, The outer pipe (1) is provided with a compressed air port (6) on its side wall, and the outer end of the compressed air port (6) is connected to an air source.

5. The resin vacuum suction pipe according to claim 1, characterized in that, The angle between the oblique hole (3) and the vacuum suction direction is 30 degrees.

6. The resin vacuum suction pipe according to claim 4, characterized in that, The compressed air port (6) is connected to an ion generator at its outer end, and the ion generator is connected to a power source.

7. The resin vacuum suction pipe according to claim 1, characterized in that, Both the outer pipe (1) and the inner pipe (2) are made of stainless steel.

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