Circulating cold water air ring device of film blowing machine
By designing a circulating cold water air ring device that integrates the functions of water collecting ring and air ring, the circulation of cold water and cold air is solved by solving the problems of poor cooling effect and secondary pollution of traditional water ring mechanisms, and the quench cooling effect of film bubbles is achieved, which is suitable for the preparation of high-transparency films and nylon films with smaller viscosity.
Patent Information
- Application Number
- CN202420933751.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Traditional water ring mechanisms are prone to secondary contamination when cooling the film bubbles, affecting the quality of the film, and have poor cooling effect, making it difficult to be suitable for preparing high-transparent polypropylene films and nylon films with smaller viscosity.
A circulating cold water air ring device is designed, and the functions of the water collecting ring and the air ring are integrated. Through the combination of the annular cold water chamber and the annular wind chamber, the circulation of cold water and cold air is realized, and the film bubbles are cooled by self-pressure cold water and high-pressure cold air.
The quench cooling effect of the film bubble is achieved, and the secondary contamination of cold water directly contacts the film bubble is avoided. It is suitable for the preparation of high-transparency polypropylene films and nylon films with lower viscosity, which improves the product's pass rate.
Smart Images
Figure CN222590440U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plastic film blowing equipment, in particular to a circulating cold water air ring device of a film blowing machine. Background Art
[0002] The film blowing machine is a device that heats and melts plastic particles and then blows them into thin films. Its main working process is: the material is first plasticized by the extruder, then extruded into a cylindrical tube embryo (film bubble) through the die head, and then cooled by the air ring and water ring, and then introduced into the traction roller for clamping after stabilization, folding, and flattening. Finally, it is wound by the winder to obtain a film product with good strength, toughness, opening, moisture resistance, transparency and thermoplasticity. The water ring mechanism is the key equipment for cooling and shaping the film bubble, which determines the various performances of the product. However, the traditional water ring mechanism uses cold water to directly contact the film bubble to achieve cooling, which is not only easy to cause secondary pollution to the film bubble, but also seriously affects the quality of the film of the film blowing machine tube, resulting in a high defective rate of products, and the cooling effect is general, which is not suitable for the preparation of high-transparency polypropylene film and low-viscosity nylon film. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a circulating cold water air ring device for a film blowing machine, which can integrate the functions of a water ring and an air ring, has a quenching cooling effect, and can be used to prepare polypropylene films with high transparency and nylon films with low viscosity. The technical solution adopted is as follows:
[0004] A circulating cold water air ring device for a film blowing machine comprises a water ring, a water inlet pipe and a water outlet pipe, an annular cold water cavity is arranged in the water ring, a first end portion of the water inlet pipe and a first end portion of the water outlet pipe are connected to the outer wall of the water ring and communicate with the annular cold water cavity, and is characterized in that: the circulating cold water air ring device also comprises an air ring and a cold air supply device, an annular air cavity is arranged in the air ring, an annular air port and at least one air nozzle communicated with the annular air cavity are arranged on the air ring; the air outlet of the cold air supply device is communicated with the annular air cavity; the water ring is arranged at the annular air port.
[0005] When the above-mentioned circulating cold water air ring device is working, cold air is supplied to the annular air cavity of the air ring by the cold air supply device, and then blown out from the annular air port to achieve the purpose of cooling the membrane bubble; at the same time, the cold water is self-pressurized to achieve water inflow and outflow, and the cold water first enters the annular cold water cavity of the water ring from the water inlet pipe and circulates once to cool the membrane bubble (at this time, the cold air in the annular air cavity will also realize heat exchange with the cold water in the annular cold water cavity, which has a cooling effect on the cold water, further enhancing the cooling effect of the cold water on the membrane bubble), and then comes out from the water outlet pipe and flows by gravity to the water storage tank to wait for purification and filtration before recycling, thereby achieving the cooling effect of water cooling and air cooling on the membrane bubble at the same time, so that it has a sudden cooling effect, which is suitable for the preparation of high-transparency polypropylene film and nylon film with low viscosity.
[0006] As a preferred solution of the utility model, a plurality of the air nozzles are provided on the outer wall of the air ring and are sequentially distributed along the outer circumference thereof.
[0007] As a further preferred solution of the utility model, the air nozzle is installed on the outer wall of the air ring through a first quick connector, and the first end of the water inlet pipe and the first end of the water outlet pipe are installed on the outer wall of the water ring through a second quick connector. Specifically, the first quick connector and the second quick connector can be quick chuck connectors. With this structure, the installation and removal of the air nozzle, the water inlet pipe and the water outlet pipe can be more convenient, thereby reducing the installation time and worker fatigue, and improving the installation efficiency of the product line.
[0008] As a preferred solution of the utility model, the cold air supply device includes a high-pressure fan, a refrigerator, a first air delivery pipe and a second air delivery pipe, the air inlet of the high-pressure fan is connected to the air outlet of the refrigerator through the first air delivery pipe, and the air outlet of the high-pressure fan is connected to the annular air cavity through the second air delivery pipe. When working, the outside air first enters the refrigerator to be frozen to form cold air, and then enters the annular air cavity through the first air delivery pipe, the high-pressure fan and the second air delivery pipe in sequence under the extraction of the high-pressure fan, and finally blows out from the annular air outlet.
[0009] As a preferred solution of the utility model, the water inlet pipe and the water outlet pipe are both fixedly connected to the air ring, thereby making the overall structure of the circulating cold water air ring device more compact and stable.
[0010] As a further preferred embodiment of the utility model, the middle section of the water inlet pipe and the middle section of the water outlet pipe are both in the annular air cavity. With this structure, the cold water flowing through the water inlet pipe and the water outlet pipe can also be used to cool the cold air in the annular air cavity, so that the cooling area is larger and the cooling effect is better.
[0011] As a further preferred embodiment of the present invention, an annular connecting plate is provided in the annular air cavity, the lower end of the annular connecting plate is integrally connected to the bottom of the annular air cavity, and the middle section of the water inlet pipe and the middle section of the water outlet pipe are both connected to the annular connecting plate.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] This circulating cold water air ring device integrates the functions of a water ring and an air ring, which not only saves the installation space of the film blowing machine, but also can cool the film bubble by air and water at the same time. It not only has a sudden cooling effect, but is also suitable for the preparation of high-transparency polypropylene film and low-viscosity nylon film. Moreover, the cold water does not contact the film bubble, and will not cause secondary pollution to the film bubble, which can improve the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.
[0015] Figure 2 yes Figure 1 AA section view. DETAILED DESCRIPTION
[0016] like Figure 1-2 As shown, the circulating cold water air ring device of the film blowing machine includes an air ring 1, a cold air supply device (not shown in the figure), a water ring 3, a water inlet pipe 4 and a water outlet pipe 5. An annular air cavity 101 is arranged in the air ring 1, and an annular air port 102 and a plurality of air nozzles 6 connected with the annular air cavity 101 are arranged on the air ring 1; the air outlet of the cold air supply device is connected with the annular air cavity 101; the water ring 3 is arranged at the annular air port 102, and an annular cold water cavity 301 is arranged in the water ring 3, and the first end of the water inlet pipe 4 and the first end of the water outlet pipe 5 are connected with the outer wall of the water ring 3 and communicate with the annular cold water cavity 301.
[0017] In this embodiment, the outer wall of the air ring 1 is provided with a plurality of air nozzles 6 uniformly distributed in sequence along the outer circumference thereof, each air nozzle 6 is respectively installed on the outer wall of the air ring 1 through a first quick connector 61, and the first end of the water inlet pipe 4 and the first end of the water outlet pipe 5 are respectively installed on the outer wall of the water ring 3 through a second quick connector 41, and the first quick connector 61 and the second quick connector 41 are quick chuck connectors. With this structure, the installation and removal of the air nozzle 6, the water inlet pipe 4 and the water outlet pipe 5 can be made more convenient, thereby reducing the installation time and the fatigue of the workers, and improving the installation efficiency of the product line.
[0018] In this embodiment, the cold air supply device includes a high-pressure fan, a refrigerator, a first air duct and a second air duct. The air inlet of the high-pressure fan is connected to the air outlet of the refrigerator through the first air duct, and the air outlet of the high-pressure fan is connected to the annular air chamber 101 through the second air duct.
[0019] In this embodiment, an annular connecting plate 103 is provided in the annular air cavity 101, the lower end of the annular connecting plate 103 is integrally connected to the bottom of the annular air cavity 101, and the middle section of the water inlet pipe 4 and the middle section of the water outlet pipe 5 are both connected to the annular connecting plate 103. Thus, the middle sections of the water inlet pipe 4 and the water outlet pipe 5 can be fixedly connected to the annular air cavity 101 of the air ring 1, making the overall structure of the circulating cold water air ring device more compact and stable, and the cold water flowing through the water inlet pipe 4 and the water outlet pipe 5 can also be used to cool the cold air in the annular air cavity 101, so that the cooling area is larger and the cooling effect is better.
[0020] The following is a brief description of the working principle of this circulating cold water air ring device:
[0021] During operation, the outside air first enters the freezer for freezing, and the formed cold air is then drawn by the high-pressure fan through the first air duct, the high-pressure fan and the second air duct in sequence into the annular air cavity 101, and then blown out from the annular air port 102 to achieve the purpose of cooling the membrane bubble; at the same time, the cold water is self-pressurized to achieve water inlet and outlet, and the cold water first enters the annular cold water cavity 301 of the water ring 3 from the water inlet pipe 4 and circulates once to cool the membrane bubble (at this time, the cold air in the annular air cavity 101 will also achieve heat exchange with the cold water in the annular cold water cavity 301, which has a refrigeration effect on the cold water, further enhancing the cooling effect of the cold water on the membrane bubble), and then comes out from the water outlet pipe 5 and flows by gravity to the water reservoir to wait for purification and filtration before recycling, thereby achieving the cooling effect of water cooling and air cooling on the membrane bubble at the same time, so that it has a sudden cooling effect, which is suitable for the preparation of high-transparency polypropylene film and nylon film with low viscosity.
[0022] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.
Claims
1. A circulating cold water air ring device for a film blowing machine, comprising a water ring, a water inlet pipe and a water outlet pipe, wherein an annular cold water cavity is arranged in the water ring, and the first end of the water inlet pipe and the first end of the water outlet pipe are connected to the outer wall of the water ring and communicate with the annular cold water cavity, characterized in that: The circulating cold water air ring device also includes an air ring and a cold air supply device. An annular air cavity is arranged inside the air ring. An annular air outlet and at least one air nozzle connected to the annular air cavity are arranged on the air ring. The air outlet of the cold air supply device is connected to the annular air cavity. The water ring is arranged at the annular air outlet.
2. The circulating cold water air ring device of the film blowing machine according to claim 1, characterized in that: The outer wall of the air ring is provided with a plurality of air nozzles distributed in sequence along the outer circumference thereof.
3. The circulating cold water air ring device of the film blowing machine according to claim 2, characterized in that: The air nozzle is installed on the outer wall of the air ring through a first quick connector, and the first end of the water inlet pipe and the first end of the water outlet pipe are installed on the outer wall of the water ring through second quick connectors.
4. The circulating cold water air ring device of the film blowing machine according to claim 1, characterized in that: The cold air supply device includes a high-pressure fan, a refrigerator, a first air duct and a second air duct. The air inlet of the high-pressure fan is connected to the air outlet of the refrigerator through the first air duct, and the air outlet of the high-pressure fan is connected to the annular air cavity through the second air duct.
5. A circulating cold water air ring device for a film blowing machine according to any one of claims 1 to 4, characterized in that: The water inlet pipe and the water outlet pipe are both fixedly connected to the air ring.
6. The circulating cold water air ring device of the film blowing machine according to claim 5, characterized in that: The middle section of the water inlet pipe and the middle section of the water outlet pipe are both located in the annular air cavity.
7. The circulating cold water air ring device of the film blowing machine according to claim 6, characterized in that: An annular connecting plate is provided in the annular air cavity, the lower end of the annular connecting plate is integrally connected to the bottom of the annular air cavity, and the middle section of the water inlet pipe and the middle section of the water outlet pipe are both connected to the annular connecting plate.