Lifting countercurrent automatic air ring

Abstract

The utility model provides a lifting reverse flow automatic air ring which comprises a base plate, a first air ring is arranged above the base plate through a hydraulic rod and a limiting mechanism, a second air ring is fixedly arranged above the first air ring through a fixing rod, and the limiting mechanism comprises a sliding ring and a limiting rod. Through mutual cooperation of a first air ring and a second air ring, film bubbles can be conveniently cooled through an air outlet cover, a discharge port and an inclined discharge port, a baffle ring is arranged at one end of the interior of the air outlet cover, part of outlet air can be blocked, air can be conveniently and transversely blown to the film bubbles, the cooling efficiency of the film bubbles can be improved, inlet air can be buffered through a reverse flow air channel, and the cooling efficiency of the film bubbles is improved. The stability of the wind speed is ensured, so that the film quality is improved, and the practicability is high; and through a sliding ring and a limiting rod, the first air ring can be limited when the hydraulic rod drives the first air ring to ascend, and the stability of the first air ring and the second air ring in the ascending and descending process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air rings for blown film machines, and particularly relates to a lifting countercurrent automatic air ring. Background Technique

[0002] The countercurrent air ring is an important component of the blown film unit in plastic processing machinery, and is responsible for cooling and shaping the blown film bubble. The countercurrent air ring has a great influence on the quality and output of blown plastic film products.

[0003] The Chinese utility model patent with the publication number of CN204869637U proposes a liftable multi-air duct countercurrent air ring, which includes a countercurrent air ring device, a lifting device and an electric drive system. Among them, the countercurrent air ring device distributes and supplies the externally supplied cooling air to a number of air outlets in a certain proportion, and each air outlet cools the film bubble respectively; the height of the countercurrent air ring is adjusted by the lifting device to adapt to the cooling of film bubbles with different blowing ratios. However, due to the lack of a limiting mechanism, the stability of the countercurrent air ring is relatively low, and only one air ring is provided, which is restricted by one air ring, reducing the blowing film efficiency and quality, and having low practicability.

[0004] Therefore, the utility model provides a lifting countercurrent automatic air ring. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a lifting countercurrent automatic air ring to solve the problems raised in the above background technology. Through the mutual cooperation of the first air ring and the second air ring, it is convenient to cool the film bubble through the air outlet hood, the discharge port and the inclined discharge port, which can improve the cooling efficiency of the film bubble, thereby improving the quality of the film and having high practicability; the first air ring can be limited by the slip ring and the limiting rod, improving the stability of the first air ring and the second air ring.

[0006] In order to achieve the above purpose, the utility model is realized by the following technical solutions: A lifting countercurrent automatic air ring, including a chassis, a first air ring is arranged above the chassis through a hydraulic rod and a limiting mechanism, a second air ring is fixedly arranged above the first air ring through a fixing rod, the limiting mechanism includes a slip ring and a limiting rod, the slip ring is slidably installed on the outside of the hydraulic rod, a countercurrent air duct is opened inside the first air ring, a first air inlet is fixedly arranged at the bottom of the first air ring, and the first air inlet is fixedly communicated with one end of the countercurrent air duct. A fixed disk is fixedly arranged in the middle of the second air ring through a connecting rod, a second air inlet is fixedly arranged on the outer circumference of the second air ring along the tangential direction, and air outlet hoods are fixedly arranged at the top and bottom of the second air ring.

[0007] Further, a retaining ring is fixedly arranged inside the air outlet hood, and exhaust holes are arranged inside the inner wall of the air outlet hood.

[0008] Further, an air outlet is arranged inside the second air ring, and the outer end of the fixed disk is arranged inside the air outlet.

[0009] Further, the connecting rod is fixedly arranged between the top wall and the bottom wall of the fixed disk and the air outlet, and a through hole is arranged at the central position of the fixed disk.

[0010] Further, the fixed rods are symmetrically and fixedly arranged between the two ends of the first air ring and the second air ring, and the bottom air outlet hood is arranged between the fixed rods.

[0011] Further, exhaust ports are equidistantly and circularly fixedly arranged at the top of the first air ring. The shape of the exhaust port is "L" - shaped, and the outlets of the exhaust ports are arranged in the same horizontal plane.

[0012] Further, the counter - flow air duct is fixedly communicated with the exhaust port, and an inclined exhaust port is arranged at one end of the counter - flow air duct.

[0013] Further, the hydraulic rods are symmetrically and fixedly arranged at the tops of both ends of the chassis. The output rods of the hydraulic rods are fixedly connected to the bottom of the first air ring. The limiting rod is fixedly arranged at one end of the sliding ring, and the top end of the limiting rod is fixedly connected to the bottom of the first air ring.

[0014] The beneficial effects of the present utility model: An elevating counter - flow automatic air ring of the present utility model, through the mutual cooperation of the first air ring and the second air ring, facilitates the cooling of the film bubble through the air outlet hood, the discharge port, and the inclined exhaust port. A retaining ring is arranged at one end inside the air outlet hood, which can block part of the air outlet, facilitating the lateral blowing of the air onto the film bubble, improving the cooling efficiency of the film bubble. By arranging the counter - flow air duct, the incoming air can be buffered and the wind speed can be stabilized, thereby improving the quality of the film, and it has high practicability; through the sliding ring and the limiting rod, the first air ring can be limited when the hydraulic rod drives the first air ring to rise, improving the stability during the lifting process of the first air ring and the second air ring. Description of the Drawings

[0015] Figure 1 is a structural diagram of an elevating counter - flow automatic air ring of the present utility model;

[0016] Figure 2 is a front - view sectional view of an elevating counter - flow automatic air ring of the present utility model;

[0017] Figure 3 is an enlarged view of part A in an elevating counter - flow automatic air ring of the present utility model Figure 2 ;

[0018] Figure 4Structural diagram of the limit mechanism of a lifting countercurrent automatic air ring of the present utility model;

[0019] In the figure: 1, chassis; 2, first air ring; 3, second air ring; 4, hydraulic rod; 5, limit mechanism; 6, first air inlet; 7, air outlet; 8, second air inlet; 9, air outlet hood; 10, retaining ring; 11, fixed disk; 12, fixed rod; 13, countercurrent air duct; 14, inclined discharge port; 15, slip ring; 16, limit rod. Specific embodiments

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a lifting countercurrent automatic air ring, including a chassis 1, above the chassis 1, a first air ring 2 is arranged through a hydraulic rod 4 and a limit mechanism 5, above the first air ring 2, a second air ring 3 is fixedly arranged through a fixed rod 12, the limit mechanism 5 includes a slip ring 15 and a limit rod 16, the slip ring 15 is slidably installed on the outside of the hydraulic rod 4, a countercurrent air duct 13 is opened inside the first air ring 2, a first air inlet 6 is fixedly arranged at the bottom of the first air ring 2, and the first air inlet 6 is fixedly communicated with one end of the countercurrent air duct 13. In the middle position inside the second air ring 3, a fixed disk 11 is fixedly arranged through a connecting rod. On the outer circumference of the second air ring 3, a second air inlet 8 is fixedly arranged tangentially. At the top and bottom of the second air ring 3, air outlet hoods 9 are fixedly arranged. The fixed rods 12 are symmetrically fixedly arranged between the two ends of the first air ring 2 and the second air ring 3. The air outlet hood 9 at the bottom is arranged between the fixed rods 12. By arranging the countercurrent air duct 13, the incoming air can be buffered to ensure the stability of the incoming air. Through the mutual cooperation of the first air ring 2 and the second air ring 3, the film bubble can be cooled simultaneously, improving the film bubble cooling efficiency.

[0022] In this embodiment, a retaining ring 10 is fixedly arranged inside the air outlet hood 9, exhaust holes are arranged inside the inner wall of the air outlet hood 9, an air outlet is arranged inside the second air ring 3, the outer end of the fixed disk 11 is arranged inside the air outlet, the connecting rod is fixedly arranged between the top wall and the bottom wall of the fixed disk 11 and the air outlet, and a through hole is opened at the central position of the fixed disk 11. By arranging the retaining ring 10 inside the air outlet hood 9, part of the air can be blocked to change the air direction, facilitating blowing towards the film bubble through the exhaust holes, and facilitating the cooling of the film bubble.

[0023] In this embodiment, exhaust ports 7 are fixedly arranged at equal intervals in a circular shape at the top of the first air ring 2. The shape of the exhaust port 7 is "L"-shaped, and the outlets of the exhaust ports 7 are arranged in the same horizontal plane. The countercurrent air duct 13 is fixedly communicated with the exhaust port 7. An inclined exhaust port 14 is provided at one end of the countercurrent air duct 13. The air inside the countercurrent air duct 13 can be blown towards the film bubble through the provided exhaust port 7, and the film bubble can be cooled.

[0024] In this embodiment, the hydraulic rods 4 are symmetrically and fixedly arranged at the tops of both ends of the chassis 1. The output rods of the hydraulic rods 4 are fixedly connected to the bottom of the first air ring 2. The limiting rod 16 is fixedly arranged at one end of the sliding ring 15. The top end of the limiting rod 16 is fixedly connected to the bottom of the first air ring 2. By driving the sliding ring 15 to slide on the hydraulic rod 4 through the limiting rod 16, the first air ring 2 and the second air ring 3 can be limited, thereby improving the stability of the first air ring 2 and the second air ring 3 during the lifting process, and having high practicability.

[0025] When using this lifting countercurrent automatic air ring, the chassis 1 is installed on the top of the blown film die, so that the formed film bubble is arranged outside the air ring. The first air inlet 6 and the second air inlet 8 are directly connected to air supply devices such as a blower through pipes. The air generated by the air supply devices such as a blower enters the interiors of the first air inlet 6 and the second air inlet 8 through the pipes, and enters the interior of the countercurrent air duct 13 through the first air inlet 6 for buffering and stabilizing the wind speed. Finally, it is discharged through the inclined exhaust port 14 and the exhaust port 7 to blow the lower end of the film bubble, which is convenient for cooling the lower end of the film bubble. The air entering the interior of the second air inlet 8 is divided by the fixed disk 11 and discharged from the top and bottom of the second air ring 3 respectively. Under the blocking action of the retaining ring 10, its wind direction is changed and discharged through the air outlet cover 9 and the exhaust holes inside it, and blown horizontally onto the film bubble, which is convenient for cooling the film bubble. Through the mutual cooperation of the first air ring 2 and the second air ring 3, the cooling efficiency of the film bubble can be improved, thereby improving the quality of the film, and having high practicability; when it is necessary to adjust the heights of the first air ring 2 and the second air ring 3, the hydraulic rod 4 is started. The output rod of the hydraulic rod 4 pushes the first air ring 2 to move upward. The first air ring 2 drives the second air ring 3 to rise through the fixed rod 12, and the first air ring 2 drives the limiting rod 16 to move upward. The limiting rod 16 drives the sliding ring 15 to slide outside the hydraulic rod 4, improving the stability of the first air ring 2 and the second air ring 3 during the lifting process.

[0026] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lifting counter-current automatic air ring, comprising a chassis (1), characterized in that: A first air ring (2) is arranged above the chassis (1) via a hydraulic rod (4) and a limiting mechanism (5); a second air ring (3) is fixedly arranged above the first air ring (2) via a fixing rod (12); the limiting mechanism (5) comprises a slip ring (15) and a limiting rod (16); the slip ring (15) is slidably mounted on the outside of the hydraulic rod (4); a countercurrent air duct (13) is provided inside the first air ring (2); a first air inlet (6) is fixedly arranged at the bottom of the first air ring (2); the first air inlet (6) is fixedly connected to one end of the countercurrent air duct (13); a fixing plate (11) is fixedly arranged at the middle position inside the second air ring (3) via a connecting rod; a second air inlet (8) is fixedly arranged on the outer periphery of the second air ring (3) along a tangential direction; and an air outlet hood (9) is fixedly arranged at the top and bottom of the second air ring (3).

2. The lifting counter-current automatic air ring according to claim 1, characterized in that: A baffle ring (10) is fixedly arranged inside the air outlet cover (9), and an exhaust hole is arranged inside the inner wall of the air outlet cover (9).

3. The lifting counter-current automatic air ring according to claim 2, characterized in that: An air outlet is arranged inside the second air ring (3), and the outer end of the fixing plate (11) is arranged inside the air outlet.

4. The lifting and reverse flow automatic air ring according to claim 3, characterized in that: The connecting rod is fixedly arranged between the fixing plate (11) and the top wall and the bottom wall of the air outlet, and a through hole is opened at the center position of the fixing plate (11).

5. The lifting counter-current automatic air ring according to claim 1, characterized in that: The fixing rods (12) are symmetrically fixedly arranged between the two ends of the first air ring (2) and the second air ring (3), and the air outlet cover (9) at the bottom is arranged between the fixing rods (12).

6. The lifting counter-current automatic air ring according to claim 1, characterized in that: The top of the first air ring (2) is fixedly provided with air outlets (7) in a circular shape and at equal intervals. The shape of the air outlets (7) is "L"-shaped, and the outlets of the air outlets (7) are arranged in the same horizontal plane.

7. The lifting counter-current automatic air ring according to claim 6, characterized in that: The counter-flow air duct (13) is fixedly connected to the air outlet (7), and an inclined outlet (14) is provided at one end of the counter-flow air duct (13).

8. The lifting counter-current automatic air ring according to claim 1, characterized in that: The hydraulic rod (4) is symmetrically fixedly arranged at the top of both ends of the chassis (1), the output rod of the hydraulic rod (4) is fixedly connected to the bottom of the first air ring (2), the limit rod (16) is fixedly arranged at one end of the slip ring (15), and the top end of the limit rod (16) is fixedly connected to the bottom of the first air ring (2).

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