Melt exhaust device for film blowing of extruder

Abstract

The utility model relates to the technical field of film blowing of extruders, in particular to a melt exhaust device for film blowing of an extruder. A melt exhaust device for film blowing of an extruder comprises a processing assembly connected with an air exhaust assembly, the air exhaust assembly comprises a first connecting pipe and a vacuum pump located in the first connecting pipe, the first connecting pipe is connected with a sealing assembly, and the air exhaust assembly comprises a first box body, a second box body and a third box body communicated with the second box body. The first connecting pipe is arranged in the first box body, the two ends of the first connecting pipe are communicated with the first box body, the two ends of the second connecting pipe are communicated with the first connecting pipe and the first box body respectively, and the two ends of the third connecting pipe are communicated with the first box body and the second box body respectively. And the pollution to the surrounding environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder film blowing, in particular to a melt exhaust device for extruder film blowing. Background Art

[0002] PVC heat shrink label film is an important component of shrink sleeve label, which is mainly used for shrink labels of beverage, condiment, daily chemical and other container packaging. During processing, the raw material is usually melted and extruded by an extruder, and then blown into film by a film blowing component.

[0003] Since gases will volatilize during the melting process of raw materials, in order to ensure the quality of finished products, the gases are usually discharged with the help of a melt exhaust device for extruder film blowing. After searching, it was found that the melt exhaust device for extruder film blowing in the prior art is connected to the extruder through an exhaust pipe, and then the gases are directly discharged with the help of a vacuum pump. Since some gases are polluting, the use effect is not good. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a melt exhaust device for extruder film blowing which can process gas.

[0005] In order to solve the above-mentioned problems, the utility model proposes a technical solution: a melt exhaust device for extruder film blowing, comprising a processing component connected to an exhaust component, the exhaust component comprising a first connecting pipe and a vacuum pump located inside the first connecting pipe, the first connecting pipe is connected to a closing component, the processing component comprises a first box body, a second box body, a third box body connected to the second box body, a second connecting pipe whose two ends are respectively connected to the first connecting pipe and the first box body, a third connecting pipe whose two ends are respectively connected to the first box body and the second box body, the first box body is filled with a first processing liquid, the second box body is filled with a second processing liquid, and the third box body is provided with an adsorption block.

[0006] As an improvement, the closing component includes a partition connected to the first connecting pipe and having a through hole inside, a connecting plate with a plug on the surface, the plug cooperates with the through hole, and a hydraulic cylinder is provided between the connecting plate and the first connecting pipe.

[0007] As an improvement, the first treatment liquid is an acidic treatment liquid.

[0008] As an improvement, the second treatment liquid is an alkaline treatment liquid.

[0009] As an improvement, the adsorption block is an activated carbon adsorption block.

[0010] As an improvement, the second connecting tube is inserted into the first processing liquid, and the third connecting tube is inserted into the second processing liquid.

[0011] As an improvement, the first box body and the second box body are both connected with a filling valve and a drain valve.

[0012] The beneficial effects of the utility model are as follows: the utility model can extract the gas generated by the molten raw material of the extrusion blown film component through the exhaust component, and the gas can be directly discharged after being processed by the processing component, thereby reducing the pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the utility model;

[0015] Figure 3 It is a top view schematic diagram of the utility model;

[0016] Figure 4 It is an enlarged schematic diagram of point A of the present utility model.

[0017] 1. Extrusion film blowing assembly; 2. First connecting pipe; 3. First box body; 4. Second box body; 5. Third box body; 6. Drain valve; 7. Vacuum pump; 8. Second connecting pipe; 9. Third connecting pipe; 10. Adsorption block; 11. Partition plate; 12. Block; 13. Connecting plate; 14. Hydraulic cylinder. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0019] A melt exhaust device for extruder film blowing includes a processing component connected to an exhaust component, the exhaust component includes a first connecting pipe 2 and a vacuum pump 7 located inside the first connecting pipe 2, the first connecting pipe 2 is connected to a closing component, the closing component includes a partition 11 connected to the first connecting pipe 2 and provided with a through hole inside, a connecting plate 13 with a plug 12 on the surface, the plug 12 cooperates with the through hole, a hydraulic cylinder 14 is provided between the connecting plate 13 and the first connecting pipe 2, and a controller electrically connected to the hydraulic cylinder is provided on the first connecting pipe 2 to facilitate control of the connection state.

[0020] The treatment component includes a first box body 3, a second box body 4, a third box body 5 connected to the second box body 4, a second connecting pipe 8 whose two ends are respectively connected to the first connecting pipe 2 and the first box body 3, and a third connecting pipe 9 whose two ends are respectively connected to the first box body 3 and the second box body 4. The first box body 3 is filled with a first treatment liquid, and the second box body 4 is filled with a second treatment liquid. An adsorption block 10 is provided in the third box body 5. The first treatment liquid is an acidic treatment liquid, and the second treatment liquid is an alkaline treatment liquid. The adsorption block 10 is an activated carbon adsorption block 10. The second connecting pipe 8 is inserted into the first treatment liquid, and the third connecting pipe 9 is inserted into the second treatment liquid. The first box body 3 and the second box body 4 are both connected with a filling valve and a drain valve 6 to facilitate the replacement of the treatment liquid.

[0021] Working principle: Figure 1 As shown, the first connecting pipe 2 is connected to the extrusion blown film assembly 1, and the plug 12 blocks the through hole to prevent the raw material from being squeezed into the first connecting pipe 2. When exhaust is required, as shown in FIG. Figure 2 As shown, the extrusion film blowing assembly 1 is controlled to suspend extrusion, the hydraulic cylinder 14 is controlled to shorten, the hydraulic cylinder 14 drives the plug 12 to disengage from the through hole through the connecting plate 13, the vacuum pump 7 is started, and the gas generated by the melting of the raw materials passes through the through hole into the first connecting pipe 2, and then enters the first treatment liquid through the second connecting pipe 8. After being treated by the first treatment liquid, it enters the second treatment liquid through the third connecting pipe 9, and then enters the third box 5 to be adsorbed and treated by the adsorption block 10, and finally discharged, thereby reducing pollution to the surrounding environment.

[0022] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A melt exhaust device for an extruder film blowing machine, comprising a processing component connected to a suction component, characterized in that: The vacuum assembly comprises a first connecting pipe (2) and a vacuum pump (7) located inside the first connecting pipe (2); the first connecting pipe (2) is connected to a sealing assembly; the processing assembly comprises a first box (3), a second box (4), a third box (5) connected to the second box (4), a second connecting pipe (8) whose two ends are respectively connected to the first connecting pipe (2) and the first box (3); and a third connecting pipe (9) whose two ends are respectively connected to the first box (3) and the second box (4); the first box (3) is filled with a first processing liquid, the second box (4) is filled with a second processing liquid, and the third box (5) is provided with an adsorption block (10).

2. The melt exhaust device for film blowing of an extruder according to claim 1, characterized in that: The sealing component comprises a partition (11) connected to the first connecting pipe (2) and provided with a through hole inside, a connecting plate (13) with a plug (12) on the surface, the plug (12) matching with the through hole, and a hydraulic cylinder (14) provided between the connecting plate (13) and the first connecting pipe (2).

3. The melt exhaust device for film blowing of an extruder according to claim 1, characterized in that: The first treatment liquid is an acidic treatment liquid.

4. The melt exhaust device for film blowing of an extruder according to claim 1, characterized in that: The second treatment liquid is an alkaline treatment liquid.

5. The melt exhaust device for film blowing of an extruder according to claim 1, characterized in that: The adsorption block (10) is an activated carbon adsorption block (10).

6. The melt exhaust device for film blowing of an extruder according to claim 1, characterized in that: The second connecting tube (8) is inserted into the first treatment liquid, and the third connecting tube (9) is inserted into the second treatment liquid.

7. The melt exhaust device for film blowing of an extruder according to claim 1, characterized in that: The first box body (3) and the second box body (4) are both connected to a filling valve and a drainage valve (6).

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