Plastic extrusion device

Abstract

The utility model provides a plastic extrusion device which comprises a rectangular shell, a sample placing shell, a pipeline, a dust collecting frame and a liquid collecting tank, the dust collector is provided with the dust collection frame and the liquid collection tank; agglomerated dust and oil drops in the pipeline fall into the dust collection frame, and the oil drops on the inner wall of the exhaust hood flow into the liquid collection tank; therefore, pollution caused by the fact that agglomerated dust and formed oil drops drop into extruded molten plastic is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic extrusion equipment, and specifically relates to a plastic extrusion device. BACKGROUND

[0002] The common granulation mode of the plastic extruder is that plastic is extruded from the head of the plastic extruder into a continuous molten strip, cooled into a plastic strip in a water tank, and cut into finished particles by a granulator. In the plastic extrusion granulation production process, due to the high-temperature and high-pressure processing conditions, high-temperature oil smoke (plasticizer), dust, extremely small glass fiber, and organic waste gas generated by high-temperature cracking will inevitably be produced; the volatile organic waste gas accompanied by a large amount of odor will cause harm to the health of production workers.

[0003] At present, the commonly used waste gas collection method is to install a recovery cover a distance above the head of the plastic extruder, use a negative pressure fan to extract a large amount of air from the recovery cover, and carry the volatile organic waste gas generated in the plastic extruder granulation process into the recovery pipeline and treatment device; however, after the recovery cover is used for a period of time, oil droplets will form on the inner wall of the recovery cover, and dust will adhere to the wall of the recovery pipeline to form a cluster, at this time, the clustered dust and the formed oil droplets will drop into the extruded molten plastic, causing pollution to the plastic. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at designing a plastic extrusion device to solve the problems in the background art. To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an air extraction cover fixed to the head of the extruder, the air extraction cover is communicated with an air extraction and purification system through a pipeline, the air extraction cover includes a rectangular shell and a lofting shell connected with the rectangular shell, the circular end face of the lofting shell is communicated with the pipeline, a dust collection frame is installed in the interior of the rectangular shell, the dust collection frame is aligned with the pipeline and the diameter size of the dust collection frame is greater than the diameter size of the pipeline, and there is a gap between the top of the dust collection frame and the pipeline, and a liquid collecting tank is arranged at the bottom of the rectangular shell.

[0005] Further, the bottom of the liquid collecting tank is communicated with a liquid discharge pipe.

[0006] Further, a U-shaped block is arranged on the side wall of the rectangular shell, a limiting rod matched with the U-shaped block is fixed to the bottom of the dust collection frame, and the bottom of the dust collection frame is attached to the top of the U-shaped block.

[0007] Further, a vertical rod is fixed to the middle part of the dust collection frame, a plurality of horizontal rods are fixed to the top of the vertical rod, and an air extraction fan is fixed to one end of the horizontal rod away from the vertical rod.

[0008] Further, the air extraction fan is arranged obliquely, and the oblique direction is directed to the center of the pipeline.

[0009] Further, a quick-release transparent observation plate is mounted on the side wall of the rectangular shell away from the extruder head.

[0010] Further, the bottom of the rectangular shell is provided with a first recess, the bottom of the transparent observation plate is embedded in the first recess, the upper part of the rectangular shell is provided with a second recess, the bottom of the second recess is attached to the transparent observation plate, and the distance between the top plane of the second recess and the top plane of the transparent observation plate is greater than the depth of the first recess.

[0011] Further, the rectangular shell is a magnetic shell, a permanent magnet is embedded in the upper part of the transparent observation plate, and the transparent observation plate is tightly attached to the second recess under the action of the permanent magnet.

[0012] Further, the upper part of the transparent observation plate is provided with a handle.

[0013] Compared with the prior art, the dust collecting frame and the liquid collecting groove are arranged, the dust and oil droplets in the pipeline fall into the dust collecting frame, and the oil droplets on the inner wall of the air extraction cover flow into the liquid collecting groove, so that the pollution caused by the dust and the oil droplets in the extruded molten plastic is effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0016] Figure 2 It is a longitudinal sectional view of the air extraction cover;

[0017] Figure 3 It is another longitudinal sectional view of the air extraction cover;

[0018] Figure 4 It is a local sectional view of the first recess;

[0019] Figure 5 It is a local sectional view of the second recess.

[0020] 1, pipeline; 2, lofting shell; 3, suction hood; 4, handle; 5, transparent observation plate; 6, drain pipe; 7, rectangular shell; 8, dust collection frame; 9, liquid collection tank; 10, vertical rod; 11, suction fan; 12, second groove; 13, permanent magnet; 14, first groove; 15, extruder head; 16, cross bar; 17, U-shaped block; 18, limiting rod. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0022] Embodiment: Please refer to Figures 1-5The utility model provides a kind of plastic extrusion device, including the suction hood 3 of being fixed to extruder head 15, the suction hood 3 is communicated with suction purification system by pipeline 1, the suction hood 3 includes rectangular shell 7 and the loft shell 2 being connected with rectangular shell 7, the circular end surface of loft shell 2 is communicated with pipeline 1, dust collection frame 8 is installed in the inside of rectangular shell 7, dust collection frame 8 is aligned pipeline 1 and the diameter size of dust collection frame 8 is greater than the diameter size of pipeline 1, and there is gap between the top of dust collection frame 8 and pipeline 1, the bottom of rectangular shell 7 is equipped with liquid collecting tank 9;After using a period of time after suction hood 3, the dust and oil drop that group in pipeline 1 will drop in dust collection frame 8, and the oil drop on the inner wall of suction hood 3 will flow into liquid collecting tank 9, to prevent the pollution of plastic that the dust that group and the oil drop that form drop into extruded molten plastic;Wherein, suction purification system uses existing common suction purification system, such as the combination of air blower and purification device, and purification device also uses common purification device in plastic extruder, here do not make too much superfluous words;Wherein, the bottom of liquid collecting tank 9 is communicated with drain pipe 6, facilitate the discharge of oil liquid;Rectangular shell 7 is equipped with U-shaped block 17 on the side wall, the bottom of dust collection frame 8 is fixed with the limiting rod 18 being cooperated with U-shaped block 17, the bottom of dust collection frame 8 is pasted with the top of U-shaped block 17, so only need to push up to can dismantle dust collection frame 8, facilitate dust collection frame 8 to dismantle while being convenient to clean inside dust collection frame 8;In addition, the middle part of dust collection frame 8 is fixed with vertical rod 10, the top of vertical rod 10 is fixed with several horizontal rods 16, the end of horizontal rod 16 being away from vertical rod 10 is fixed with suction fan 11, suction fan 11 is arranged obliquely, and the direction of inclination points to the center of pipeline 1, improves the suction of toxic gas, reduces the power of air blower;In addition, quick-release transparent observation board 5 is installed on the side wall of rectangular shell 7 being away from extruder head 15, so can keep the plastic machine head position vision well, and timely discover abnormality;In addition, when transparent observation board 5 is removed, it is also convenient to clean liquid collecting tank 9 and dismantle dust collection tank;Wherein, the bottom of rectangular shell 7 is equipped with first recess 14, the bottom of transparent observation board 5 is embedded in the inside of first recess 14, the upper part of rectangular shell 7 is equipped with second recess 12, the bottom of second recess 12 is pasted with transparent observation board 5, the distance between the top plane of second recess 12 and the top plane of transparent observation board 5 is greater than the depth of first recess 14, the upper part of transparent observation board 5 is equipped with handle 4, to realize the quick disassembly of transparent observation board 5, when installing, only need to hold handle 4, the bottom of transparent observation board 5 is inserted into first recess 14;When removing, only need to lift handle 4;Rectangular shell 7 is magnetic shell, the upper part of transparent observation board 5 is embedded with permanent magnet 13, transparent observation board 5 is pasted on second recess 12 under the action of permanent magnet 13, to improve the installation quality of transparent observation board 5 while can improve the air tightness of transparent observation board 5 in rectangular shell 7.

[0023] Working principle: after the use of the air exhaust cover 3 for a period of time, the dust and oil droplets in the pipeline 1 will fall into the dust collecting frame 8, and the oil droplets on the inner wall of the air exhaust cover 3 will flow into the liquid collecting tank 9 and flow out from the liquid discharge pipe 6; therefore, the utility model prevents the dust and oil droplets from dropping into the extruded molten plastic, and reduces the pollution to the plastic.

[0024] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "on", "above", "under", "below", "left", "right", "front", "rear", and the like are used for explanation purposes only and are not intended to be limiting.

[0025] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the utility model, and any equivalent embodiment with equivalent changes and modifications is still within the scope of the utility model.

Claims

1. A plastic extrusion apparatus, comprising an extraction hood (3) fixed to the extruder head (15), the extraction hood (3) being connected to an extraction and purification system via a pipe (1), characterized in that: The exhaust hood (3) includes a rectangular shell (7) and a layout shell (2) connected to the rectangular shell (7). The circular end face of the layout shell (2) is connected to the pipe (1). A dust collection frame (8) is installed inside the rectangular shell (7). The dust collection frame (8) is aligned with the pipe (1) and the diameter of the dust collection frame (8) is larger than the diameter of the pipe (1). There is a gap between the top of the dust collection frame (8) and the pipe (1). A liquid collection tank (9) is provided at the bottom of the rectangular shell (7).

2. The plastic extrusion apparatus according to claim 1, characterized in that: The bottom of the liquid collection tank (9) is connected to the drain pipe (6).

3. The plastic extrusion apparatus according to claim 1, characterized in that: The rectangular shell (7) has a U-shaped block (17) on its side wall. The bottom of the dust collection frame (8) is fixed with a limiting rod (18) that cooperates with the U-shaped block (17). The bottom of the dust collection frame (8) is in contact with the top of the U-shaped block (17).

4. The plastic extrusion apparatus according to claim 1, characterized in that: A vertical rod (10) is fixedly connected to the middle of the dust collection frame (8), and several horizontal rods (16) are fixedly connected to the top of the vertical rod (10). An exhaust fan (11) is fixedly connected to one end of the horizontal rod (16) away from the vertical rod (10).

5. The plastic extrusion apparatus according to claim 4, characterized in that: The exhaust fan (11) is arranged at an angle, and the angle is directed towards the center of the pipe (1).

6. The plastic extrusion apparatus according to claim 1, characterized in that: A quick-release transparent observation plate (5) is installed on the side wall of the rectangular housing (7) away from the extruder head (15).

7. The plastic extrusion apparatus according to claim 6, characterized in that: The bottom of the rectangular shell (7) is provided with a first groove (14), the bottom of the transparent observation plate (5) is embedded in the first groove (14), the upper part of the rectangular shell (7) is provided with a second groove (12), the bottom of the second groove (12) is in contact with the transparent observation plate (5), and the distance between the top plane of the second groove (12) and the top plane of the transparent observation plate (5) is greater than the depth of the first groove (14).

8. The plastic extrusion apparatus according to claim 7, characterized in that: The rectangular shell (7) is a magnetic shell, and a permanent magnet (13) is embedded in the upper part of the transparent observation plate (5). Under the action of the permanent magnet (13), the transparent observation plate (5) is tightly attached to the second groove (12).

9. The plastic extrusion apparatus according to claim 7, characterized in that: The upper part of the transparent observation plate (5) is provided with a handle (4).

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