PGA degradable material film blowing adjusting air ring

Abstract

The utility model relates to the technical field of PGA material film blowing adjusting air rings, and discloses a PGA degradable material film blowing adjusting air ring which comprises a ring body, a base, an air inlet pipe, an adjusting screw, an adjusting groove, a first air opening, a second air opening, an air opening air inlet hole and a third air opening, and is characterized in that the bottom of the ring body is fixed through the base, and the air inlet pipe is arranged on the side face of the ring body; the ring body is internally provided with a rotary air inlet groove, a turn-over wall labyrinth air duct formed by a turn-over wall I and a turn-over wall II, and an air duct I, an air duct II and an air duct III which are separated by the turn-over wall labyrinth air duct; and a plurality of air outlets are formed below the ring body. According to the film bubble cooling device, the side air inlet rotating structure is matched with the wall-turning labyrinth air channel, so that external air forms rotating airflow and is uniformly dispersed to the air outlets, the cooling speed of different areas of film bubbles is effectively controlled, the problem of thickness errors caused by non-uniform cooling in the film blowing process of PGA materials is solved, and the accurate adjustment of the thickness of the film bubbles is realized.

Description

Technical Field

[0001] This utility model relates to the field of blown film regulating air ring technology for PGA materials, and in particular to a blown film regulating air ring for PGA degradation materials. Background Technology

[0002] PGA degradable materials are plastic materials with excellent biodegradability and are widely used in environmental protection. They can rapidly degrade in the natural environment, reducing plastic pollution and meeting the requirements of sustainable development. Through special molecular design, PGA degradable materials can gradually decompose into water and carbon dioxide after use through microbial action or light exposure, avoiding the ecological problems caused by the long-term presence of traditional plastics in the environment. This material not only retains some basic properties of plastics, such as water resistance and durability, but also gradually degrades under certain conditions, reducing long-term negative impacts on the environment.

[0003] Traditional blown film air rings typically consist of multiple components, including an airflow regulating device, the air ring itself, and cooling airflow inlets and outlets. These components work together to ensure effective airflow distribution and film material stability. The air ring body usually comprises a ring frame and multiple air ducts to guide airflow. The airflow regulating device controls the speed and direction of the airflow, ensuring smooth cooling of the film material and successful film forming during the blown film process.

[0004] PGA requires extremely high cooling and thickness uniformity during blown film production. Traditional blown film air rings have the following problems: First, uneven distribution of cooling airflow leads to inconsistent local cooling rates in the film bubble, resulting in large thickness errors. Second, the adjustment mechanism is complex or lacks precision, making it difficult to respond in real time to changes in the properties of PGA materials. Third, imported equipment is expensive and has poor adaptability, failing to meet the needs of domestic ordinary equipment and the upgrading of old equipment. In existing technologies, although some air rings adopt a side air intake structure, they lack efficient airflow distribution and precise adjustment methods, making it difficult to solve the problems of cooling and thickness control in the blown film production of PGA materials. Therefore, a blown film adjustment air ring with optimized structure, convenient adjustment, and high cost performance is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a blown film regulating air ring for PGA degradable materials, which aims to improve the side typhoon ring's lack of efficient airflow distribution and precise adjustment methods, making it difficult to solve the problems of cooling and forming and thickness control in the blown film process of PGA materials.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a PGA degradable material blown film regulating air ring, comprising a ring body, a base, an air inlet pipe, an adjusting screw, an adjusting groove, an air outlet one, an air outlet two, an air inlet hole, and an air outlet three. The bottom of the ring body is fixed by the base, and an air inlet pipe is provided on the side. The ring body has a rotating air inlet groove, a maze air duct formed by a wall-turning wall one and a wall-turning wall two, and air duct one, air duct two, and air duct three formed by the wall-turning maze air duct. Multiple air outlets are provided below the ring body, including air outlet one, air outlet two, and air outlet three. Each air outlet is divided into an air outlet regulating groove. The regulating groove cooperates with the adjusting screw. The size of the air outlet groove gap is adjusted by rotating the adjusting screw. Air duct one, air duct two, and air duct three are connected to the corresponding air outlet through the air inlet hole.

[0007] Furthermore, the adjusting screw passes through the side wall of the ring and connects to the adjusting groove. By rotating the adjusting screw, the adjusting groove is moved to change the gap of the air outlet groove.

[0008] Furthermore, the inner wall of the rotating air inlet groove is spiral-shaped and connected to the air inlet pipe, so that the incoming air forms a rotating airflow and is distributed to each air outlet through the air inlet hole.

[0009] Furthermore, the air duct 1, air duct 2 and air duct 3 are connected to each other through honeycomb holes and air inlet distribution slots, and each air duct is connected to air outlet 1, air outlet 2 and air outlet 3 through air inlet holes.

[0010] Furthermore, the air outlets one, two, and three are arranged in a ring around the bottom of the ring body, corresponding to different cooling areas of the membrane bubble, and the air volume of each air outlet is independently controlled by the adjustment groove.

[0011] Furthermore, the adjusting groove cooperates with the adjusting screw. By rotating the adjusting screw clockwise or counterclockwise, the gap of the air outlet groove is reduced or increased accordingly, thereby adjusting the air volume of air outlet one, air outlet two, and air outlet three.

[0012] Furthermore, the rotating air inlet slot is connected to the air inlet pipe to guide external air into the air duct 1, air duct 2, and air duct 3 inside the ring body in the form of rotating airflow, and distribute it evenly to each air outlet through the air inlet hole.

[0013] Furthermore, the honeycomb holes and air inlet distribution grooves inside the ring body are used to evenly disperse the rotating airflow to air duct one, air duct two, and air duct three, and deliver it to air outlet one, air outlet two, and air outlet three through the air inlet holes.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the combination of the side air intake rotating structure and the flip-wall maze air duct firstly enables the external air to form a rotating airflow and be evenly distributed to each air outlet, effectively controlling the cooling rate of different areas of the film bubble, solving the thickness error problem caused by uneven cooling during the blowing process of PGA material, and realizing precise adjustment of the film bubble thickness.

[0016] 2. In this utility model, the linkage design of the adjusting screw and the adjusting groove makes it easy for operators to manually adjust the air volume in real time according to the thickness of the membrane bubble. The structure is simple and the adjustment is convenient. At the same time, the air ring can be adapted to ordinary equipment, high-end equipment and old equipment upgrades and renovations. It has wide applicability and ultra-high cost performance. It can replace the expensive foreign equipment of the same kind and improve the practicality and economy of domestic PGA biodegradable material blown film production. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the blown film regulating air ring of a PGA degradable material proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the adjusting screw structure of the blowing adjustment air ring for PGA degradable material proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the ring structure of a blown film regulating air ring for PGA degradable material proposed in this utility model.

[0020] Legend:

[0021] 1. Ring body; 2. Adjusting screw; 3. Rotating air inlet slot; 4. Air inlet pipe; 5. Adjusting slot; 6. Air outlet one; 7. Air outlet two; 8. Base; 9. Air inlet hole; 10. Air duct one; 11. Air duct two; 12. Honeycomb holes; 13. Air inlet distribution slot; 14. Flip wall one; 15. Flip wall two; 16. Air outlet three; 17. Air duct three. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-3One embodiment of this utility model provides: a PGA degradable material blown film regulating air ring includes an annular ring body 1, the bottom of which is fixed above the blown film machine die head by a base 8, and the side is vertically connected to an air inlet pipe 4, which is connected to a spiral rotating air inlet groove 3 inside the ring body 1; the inside of the ring body 1 is composed of a first flip wall 14 and a second flip wall 15 forming a flip wall maze air duct, which divides the internal space into air duct 10, air duct 2 11, and air duct 3 17. The three air ducts are connected by honeycomb holes 12 and air inlet distribution grooves 13 to achieve uniform airflow diffusion; air outlet 1 6 and air outlet 2 7 are distributed circumferentially below the ring body 1. The air outlet has three outlets, each connected to a corresponding air duct via an air inlet hole 9. Each outlet has an adjustment groove 5, which is connected to an adjustment screw 2 passing through the side wall of the ring body 1. Rotating the adjustment screw 2 moves the adjustment groove 5, thus changing the outlet groove gap. The adjustment screw 2 passes through the side wall of the ring body 1, and its end connects to the movable baffle of the adjustment groove 5. Rotating the screw changes the outlet groove gap. The inner wall of the air inlet groove 3 rotates... The spiral shape connects to the air inlet duct 4, causing the incoming air to form a rotating airflow and be distributed to each air outlet through the air inlet hole 9. Air duct 10, air duct 21, and air duct 317 are connected by honeycomb holes 12 and air inlet distribution grooves 13. Each air duct is connected to air outlet 16, air outlet 27, and air outlet 316 through the air inlet hole 9. Air outlet 16, air outlet 27, and air outlet 316 are arranged in a ring around the lower circumference of the ring body 1, corresponding to different cooling areas of the membrane bubble. The airflow of each air outlet is independently controlled by the adjusting groove 5. The adjusting groove 5 cooperates with the adjusting screw 2, and the airflow is controlled clockwise by adjusting the screw 2. The needle can be rotated clockwise or counterclockwise to reduce or increase the gap between the air outlet slots, thereby adjusting the air volume of air outlet 6, air outlet 7, and air outlet 16. The rotating air inlet slot 3 is connected to the air inlet pipe 4 and is used to guide external air into the air duct 10, air duct 21, and air duct 317 inside the ring body 1 in the form of rotating airflow. The air is then evenly distributed to each air outlet through the air inlet hole 9. The honeycomb holes 12 and the air inlet distribution slot 13 inside the ring body 1 are used to evenly disperse the rotating airflow to the air duct 10, air duct 21, and air duct 317 and deliver it to air outlet 6, air outlet 7, and air outlet 16 through the air inlet hole 9.

[0024] Working principle: External air enters the rotating air inlet slot 3 through the air inlet pipe 4, forming a rotating airflow under the action of the spiral inner wall. Utilizing Bernoulli's principle, the kinetic energy of the airflow is converted into static pressure energy and evenly distributed to each layer of the air duct. When the airflow passes through the honeycomb holes 12, it is further broken into fine streams, which are guided to air outlet 6 and air outlet 7 through the air inlet distribution slot 13. The adjusting screw 2 passes through the side wall of the ring body 1 and connects to the adjusting slot 5. When rotated clockwise, it drives the adjusting slot 5 to move to reduce the gap of the air outlet slot, thereby reducing the airflow and slowing down the cooling rate of the corresponding area of ​​the membrane bubble, which becomes thinner due to cooling contraction. When rotated counterclockwise, it increases the gap of the air outlet slot, thereby increasing the airflow, accelerating the cooling rate, and thickening the membrane bubble. Thus, by manually adjusting the screw 2, the airflow of different cooling areas around the membrane bubble can be precisely controlled, thereby adjusting the local cooling rate of the membrane bubble to improve the thickness uniformity.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blown film regulating air ring for PGA degradable materials, comprising a ring body (1), a base (8), an air inlet pipe (4), an adjusting screw (2), an adjusting groove (5), an air outlet one (6), an air outlet two (7), an air inlet hole (9), and an air outlet three (16), characterized in that: The bottom of the ring body (1) is fixed by the base (8), and the side is provided with an air inlet pipe (4). The inside of the ring body (1) is provided with a rotating air inlet groove (3), a wall-flipping maze air duct composed of wall-flipping one (14) and wall-flipping two (15), and air duct one (10), air duct two (11) and air duct three (17) formed by the wall-flipping maze air duct. The bottom of the ring body (1) is provided with multiple air outlets, including air outlet one (6), air outlet two (7) and air outlet three (16). Each air outlet is divided into an air outlet adjustment groove (5). The adjustment groove (5) cooperates with the adjustment screw (2). The size of the air outlet groove gap is adjusted by rotating the adjustment screw (2). The air duct one (10), air duct two (11) and air duct three (17) are connected to the corresponding air outlet through the air inlet hole (9).

2. The blown film regulating air ring for PGA degradable materials according to claim 1, characterized in that: The adjusting screw (2) passes through the side wall of the ring (1) and is connected to the adjusting groove (5). By rotating the adjusting screw (2), the adjusting groove (5) is driven to move to change the gap of the air outlet groove.

3. The blown film regulating air ring for PGA degradable materials according to claim 2, characterized in that: The inner wall of the rotating air inlet groove (3) is spiral-shaped and connected to the air inlet pipe (4), so that the incoming air forms a rotating airflow and is distributed to each air outlet through the air inlet hole (9).

4. The blown film regulating air ring for PGA degradable materials according to claim 3, characterized in that: The air duct 1 (10), air duct 2 (11) and air duct 3 (17) are connected by honeycomb holes (12) and air inlet distribution grooves (13), and each air duct is connected to air inlet 1 (6), air inlet 2 (7) and air inlet 3 (16) through air inlet holes (9).

5. The blown film regulating air ring for PGA degradable materials according to claim 4, characterized in that: The air outlets 1 (6), 2 (7) and 3 (16) are arranged in a ring around the bottom of the ring body (1), corresponding to different cooling areas of the membrane bubble. The air volume of each air outlet is independently controlled by the adjustment groove (5).

6. The blown film regulating air ring for PGA degradable materials according to claim 5, characterized in that: The adjustment groove (5) works in conjunction with the adjustment screw (2). By rotating the adjustment screw (2) clockwise or counterclockwise, the gap between the air outlet grooves is reduced or increased accordingly, thereby adjusting the air volume of air outlet one (6), air outlet two (7), and air outlet three (16).

7. The blown film regulating air ring for PGA degradable materials according to claim 6, characterized in that: The rotating air inlet groove (3) is connected to the air inlet pipe (4) and is used to guide external air into the air duct one (10), air duct two (11) and air duct three (17) inside the ring body (1) in the form of rotating airflow, and distribute it evenly to each air outlet through the air inlet hole (9).

8. The blown film regulating air ring for PGA degradable materials according to claim 7, characterized in that: The honeycomb holes (12) and air inlet distribution grooves (13) inside the ring (1) are used to evenly distribute the rotating airflow to air duct one (10), air duct two (11) and air duct three (17), and deliver it to air inlet one (6), air inlet two (7) and air inlet three (16) through air inlet holes (9).

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