Cooling device for full-biodegradable plastic film production

Abstract

The utility model relates to the technical field of plastic film production, and particularly discloses a cooling device for full biodegradable plastic film production, which comprises two air cooling rings, the two air cooling rings are connected and fixed through a length-adjustable support frame, air inlet chambers and air outlet chambers are arranged in the air cooling rings, the air inlet chamber of one air cooling ring is connected with an air inlet pipe, and the air outlet chamber of the other air cooling ring is connected with an air outlet pipe. The air inlet chambers of the two air cooling rings are communicated through a telescopic pipe, an upper flow guide block and a lower flow guide block are arranged in the air outlet chamber, and an air blowing opening is formed between the upper flow guide block and the lower flow guide block. By arranging the two air cooling rings, the uniformity of cooling air quantity and cold air distribution is improved, so that the cooling uniformity and the cooling speed of the plastic film are improved, and the production efficiency and the production quality are improved; and meanwhile, the distance between the two air cooling rings can be adjusted according to the production requirements of different plastic films, and the cooling effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic film production technology, specifically a cooling device for the production of fully biodegradable plastic films. Background Technology

[0002] Fully biodegradable plastic film is a type of plastic film that degrades due to the action of naturally occurring microorganisms. It exhibits significant decomposition performance and excellent properties such as abrasion resistance, water resistance, plasticity, and mechanical strength. Fully biodegradable plastic film has a wide range of applications; for example, bags, bottles, and mulch films made from this type of plastic offer significant advantages in agriculture, such as heat preservation, moisture retention, and weed control. Simultaneously, its excellent degradation properties effectively reduce plastic pollution and protect the environment.

[0003] Cooling is a crucial step in plastic film production, directly impacting film quality and production efficiency. Common cooling methods include air ring cooling and water ring cooling, with air ring cooling being widely used in blown film processes. Existing air ring cooling systems often employ single-ring cooling. For example, the blown film device for preventing film wrinkles disclosed in patent CN219789247U is prone to insufficient airflow when producing thicker plastic films, leading to inadequate film cooling and affecting production speed and quality. Utility Model Content

[0004] This invention addresses the aforementioned shortcomings of existing technologies by providing a cooling device for the production of fully biodegradable plastic films. By incorporating two air-cooling rings, the device increases the uniformity of cooling airflow and distribution, thereby improving the uniformity and speed of plastic film cooling and enhancing production efficiency and quality. Furthermore, the distance between the two air-cooling rings can be adjusted according to the production requirements of different plastic films, further improving the cooling effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cooling device for the production of fully biodegradable plastic film includes two air-cooled rings connected and fixed between them by an adjustable-length support frame. Each air-cooled ring has an air inlet chamber and an air outlet chamber. The air inlet chamber of one air-cooled ring is connected to an air inlet pipe. The air inlet chambers of the two air-cooled rings are connected by a telescopic pipe. The air outlet chamber is provided with an upper guide block and a lower guide block, and an air outlet is provided between the upper guide block and the lower guide block.

[0007] Preferably, the support frame includes a guide rail and a support plate connected to the air-cooling ring. One end of the support plate is inserted into the guide rail. The side wall of the guide rail is provided with a limiting hole. The support plate is connected with a bolt that mates with the limiting hole, and a positioning nut is connected to the bolt.

[0008] Preferably, the telescopic tube includes an inner air tube and an outer air tube connected to the air-cooling ring. One end of the inner air tube is inserted into the outer air tube. A sealing ring that slides and engages with the inner wall of the outer air tube is fitted on the outer side of the end of the inner air tube. A sealing ring that slides and engages with the outer wall of the inner air tube is fixed on the inner side of the end of the outer air tube.

[0009] Preferably, the air intake pipe is equipped with a valve.

[0010] Preferably, the air-cooling ring includes an outer shell and an inner shell, and sound insulation cotton is provided between the outer shell and the inner shell.

[0011] Preferably, a flow equalization plate is provided between the air inlet chamber and the air outlet chamber, and the flow equalization plate is provided with air outlet holes evenly distributed.

[0012] Preferably, the side walls of the upper guide block and the lower guide block are provided with sound-absorbing lining plates.

[0013] Preferably, a guide plate is provided on the outer side of the air outlet, and a support ring that is tightly attached to the lower guide block is connected to the lower guide block. A stud is provided on the lower guide block, and a guide hole that mates with the stud is provided on the support ring. A clamping nut is provided on the stud.

[0014] Preferably, a limiting ring is connected to the inner side of the air-cooling ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model increases the uniformity of cooling airflow and cold air distribution by setting two air-cooling rings, thereby improving the uniformity and cooling speed of plastic film cooling, and improving production efficiency and quality; at the same time, the distance between the two air-cooling rings can be adjusted according to the production requirements of different plastic films, thus improving the cooling effect.

[0017] 2. This utility model greatly improves the sound absorption effect and reduces wind noise by setting sound insulation cotton and sound absorption lining.

[0018] 3. This utility model allows for adjustment of the air outlet size via a guide plate, meeting different cooling requirements and offering greater flexibility to meet diverse production needs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the air-cooled ring;

[0021] Figure 3 This is a schematic diagram of the structure of a connecting pipe;

[0022] Figure 4 This is a structural schematic diagram of the connecting frame;

[0023] In the diagram: 1-Air-cooled ring; 101-Outer shell; 102-Sound insulation cotton; 103-Inner shell; 104-Intake chamber; 105-Flow equalization plate; 106-Lower guide block; 107-Upper guide block; 108-Sound-absorbing liner; 109-Air outlet; 110-Guide plate; 111-Support ring; 112-Stud; 113-Pressure nut; 114-Guide hole; 115-Limiting ring; 116-Outlet chamber; 2-Telescopic tube; 201-Inner air pipe; 202-Sealing ring; 203-Outer air pipe; 3-Intake pipe; 4-Support frame; 401-Support plate; 402-Bolt; 403-Positioning nut; 404-Limiting hole; 405-Guide rail. Detailed Implementation

[0024] 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.

[0025] like Figure 1 As shown, a cooling device for the production of fully biodegradable plastic film includes two air-cooled rings 1, which are connected and fixed by a support frame 4. Each air-cooled ring 1 has an air inlet chamber 104 and an air outlet chamber 116. One of the air inlet chambers 104 of the air-cooled ring 1 is connected to an air inlet pipe 3, which is equipped with a valve to control the overall air intake. The air inlet chambers 104 of the two air-cooled rings 1 are connected by a telescopic pipe 2. The air outlet chamber 116 has an upper guide block 107 and a lower guide block 106. An air outlet 109 is provided between the upper guide block 107 and the lower guide block 106. The sidewalls of the upper guide block 107 and the lower guide block 106 are relatively smooth. The air outlet 109 has an angle of 45° to 60° with the horizontal to reduce the vibration of the film bubble, making the operation more stable and improving the air cooling effect and film quality.

[0026] like Figure 4 As shown, the support frame 4 includes a guide rail 405 connected to the air-cooling ring 1 and a support plate 401. One end of the support plate 401 is inserted into the guide rail 405. A limiting hole 404 is provided on the side wall of the guide rail 405. A bolt 402 that mates with the limiting hole 404 is connected to the support plate 401. The head of the bolt 402 mates with the side wall of the guide rail 405. A positioning nut 403 is connected to the bolt 402. Rotating the positioning nut 403 engages with the head of the bolt 402, which clamps and fixes the support plate 401 to the guide rail 405. By adjusting the height of the support frame 4, the distance between the two air-cooling rings 1 can be adjusted. When producing plastic films of different thicknesses, the distance between the two air-cooling rings 1 can be adjusted according to the air-cooling requirements.

[0027] like Figure 3 As shown, the telescopic tube 2 includes an inner air pipe 201 and an outer air pipe 203 connected to the air-cooling ring 1. One end of the inner air pipe 201 is inserted into the outer air pipe 203. A sealing ring 202 that slides and engages with the inner wall of the outer air pipe 203 is fitted on the outer side of the end of the inner air pipe 201. A sealing ring 202 that slides and engages with the outer wall of the inner air pipe 201 is fixed on the inner side of the end of the outer air pipe 203. The inner air pipe 201 can slide within the outer air pipe 203, which satisfies the distance adjustment between the two air-cooling rings 1. At the same time, the sealing ring 202 can prevent gas leakage between the inner air pipe 201 and the outer air pipe 203.

[0028] like Figure 2 As shown, a flow equalization plate 105 is provided between the air inlet chamber 104 and the air outlet chamber 116. The flow equalization plate 105 has evenly distributed air outlet holes, allowing airflow to enter the entire air outlet chamber 116 uniformly, ensuring that the blower nozzle 109 can blow out a uniform airflow. The air-cooling ring 1 includes an outer shell 101 and an inner shell 103. Sound insulation cotton 102 is provided between the outer shell 101 and the inner shell 103. Sound-absorbing lining plates 108 are provided on the side walls of the upper guide block 107 and the lower guide block 106. The sound-absorbing lining plates 108 can be made of mineral wool. The sound insulation cotton 102 and the sound-absorbing lining plates 108 can greatly improve the sound absorption effect and reduce wind noise.

[0029] A guide plate 110 is provided on the outer side of the air outlet 109. The lower end of the guide plate 110 is connected to a support ring 111 that is close to the lower guide block 106. A stud 112 is provided on the lower guide block 106. A guide hole 114 that mates with the stud 112 is provided on the support ring 111. A clamping nut is provided on the stud 112. The height of the guide plate 110 can be adjusted by opening and closing the clamping nut, thereby adjusting the opening size of the air outlet 109 to meet different cooling requirements.

[0030] A limit ring 115 is connected to the inner side of the air-cooled ring 1, which can play a certain protective role and prevent the plastic film after blowing air from contacting the guide plate 110.

[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A cooling device for the production of fully biodegradable plastic film, characterized in that: It includes two air-cooled rings, which are connected and fixed by an adjustable support frame. Each air-cooled ring has an air inlet chamber and an air outlet chamber. The air inlet chamber of one of the air-cooled rings is connected to an air inlet pipe. The air inlet chambers of the two air-cooled rings are connected by a telescopic pipe. The air outlet chamber is provided with an upper guide block and a lower guide block, and an air outlet is provided between the upper guide block and the lower guide block.

2. The cooling device for producing fully biodegradable plastic film as described in claim 1, characterized in that: The support frame includes a guide rail and a support plate connected to the air-cooling ring. One end of the support plate is inserted into the guide rail. The side wall of the guide rail is provided with a limiting hole. The support plate is connected with a bolt that mates with the limiting hole, and a positioning nut is connected to the bolt.

3. The cooling device for producing fully biodegradable plastic film as described in claim 1, characterized in that: The telescopic tube includes an inner air tube and an outer air tube connected to the air-cooling ring. One end of the inner air tube is inserted into the outer air tube. A sealing ring that slides and engages with the inner wall of the outer air tube is fitted on the outer side of the end of the inner air tube. A sealing ring that slides and engages with the outer wall of the inner air tube is fixed on the inner side of the end of the outer air tube.

4. A cooling device for the production of fully biodegradable plastic film as described in claim 1, characterized in that: A valve is installed on the air intake pipe.

5. A cooling device for the production of fully biodegradable plastic film as described in claim 1, characterized in that: The air-cooling ring includes an outer shell and an inner shell, with sound insulation cotton provided between the outer shell and the inner shell.

6. A cooling device for the production of fully biodegradable plastic film as described in claim 1, characterized in that: A flow equalization plate is provided between the air inlet chamber and the air outlet chamber, and air outlet holes are evenly distributed on the flow equalization plate.

7. A cooling device for the production of fully biodegradable plastic film as described in claim 1, characterized in that: The upper and lower guide blocks are provided with sound-absorbing lining plates on their side walls.

8. A cooling device for the production of fully biodegradable plastic film as described in claim 1, characterized in that: The air outlet is provided with a guide plate on its outer side. The lower end of the guide plate is connected to a support ring that is close to the lower guide block. The lower guide block is provided with a stud. The support ring is provided with a guide hole that mates with the stud. The stud is provided with a clamping nut.

9. A cooling device for the production of fully biodegradable plastic film as described in claim 1, characterized in that: A limit ring is connected to the inner side of the air-cooled ring.

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