Cooling water ring of downward blowing type film blowing machine

Abstract

The utility model provides a cooling water ring of a downward blowing type film blowing machine, and relates to the technical field of film blowing equipment. The cooling water ring of the downward blowing type film blowing machine comprises a primary water ring and a secondary water ring located below the primary water ring, the primary water ring comprises a ring wall, an annular water storage chamber is formed in the periphery of the ring wall, a water inlet is formed in the outer wall of the annular water storage chamber, a detachable water storage chamber cover plate is installed above the annular water storage chamber, and a water outlet is formed in the outer wall of the water storage chamber. A water storage chamber cover plate is arranged in the annular water storage chamber, an overflow port is formed between the water storage chamber cover plate and the annular wall, an annular vacuum chamber is arranged below the annular water storage chamber, the annular vacuum chamber is communicated with the interior of the annular wall, the secondary water ring comprises an annular inner wall and an annular outer wall, a water accumulation chamber is formed between the annular inner wall and the annular outer wall, and a water scraping ring is arranged at the top end of the annular inner wall. Cooling water on the surface of a product can be removed, film bubbles are prevented from wrinkling and deforming, and the film bubble quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing equipment, in particular to a cooling water ring of a bottom-blowing film blowing machine. Background Art

[0002] In the production process of the downward blowing film machine, the molten material has just been extruded to form a high-temperature annular film bubble, which continues to move downward. Cooling water must be used to cool the surface of the annular film bubble.

[0003] When the existing downward blowing film blowing machine is working, the film bubble passes through the middle of the annular inner wall and continues to go down. The water in the water storage chamber overflows the upper edge of the inner wall, forming an annular water curtain around the film bubble, so that the film bubble can be cooled. However, if the film bubble is extruded at a faster speed, it is necessary to increase the cooling speed of the film bubble, and the amount of cooling water must be increased accordingly. The weight of the water curtain attached to the surface of the film bubble will increase, and the downward flushing force of the water flow on the film bubble will also increase. Under the combined effect of its own weight, the weight of the attached water curtain, and the downward flushing force of the water flow, the film bubble is very likely to fall, be pulled, deform, and other problems. Utility Model Content

[0004] The utility model aims to provide a cooling water ring of a bottom-blowing film blowing machine, which can remove cooling water on the surface of a film bubble, prevent the film bubble from wrinkling and deforming, and ensure the quality of the film bubble.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A cooling water ring of a bottom-blowing film blowing machine comprises a primary water ring and a secondary water ring located below the primary water ring, the primary water ring comprising a ring wall, an annular water storage chamber is formed on the periphery of the ring wall, a water inlet is formed on the outer wall of the annular water storage chamber, a detachable water storage chamber cover is installed above the annular water storage chamber, an overflow port is formed between the water storage chamber cover and the ring wall, an annular vacuum chamber is arranged below the annular water storage chamber, the annular vacuum chamber is communicated with the inside of the ring wall, the secondary water ring comprises an inner ring wall and an outer ring wall, a water accumulation chamber is formed between the inner ring wall and the outer ring wall, a wiper ring is arranged on the top of the inner ring wall.

[0007] Furthermore, a circular ring-shaped spoiler is provided in the annular water storage chamber.

[0008] Furthermore, a plurality of partition plates are arranged in the annular vacuum chamber, and the plurality of partition plates divide the annular vacuum chamber into a plurality of independent vacuum areas, and each of the vacuum areas is respectively connected to the interior of the annular wall.

[0009] Furthermore, a vacuum ring groove is provided on the inner wall of the ring wall, and a plurality of water holes are opened on the vacuum ring groove. Each of the vacuum areas is connected to the inside of the ring wall through the water holes, and each of the vacuum areas is provided with a suction port connected to the outside.

[0010] Furthermore, an atomizer is provided at the bottom of the annular wall, and the atomizer is connected to an external water source.

[0011] Furthermore, an annular groove is provided on the top of the water storage chamber cover.

[0012] Furthermore, a water ring bracket plate is provided at the bottom of each of the primary water ring and the secondary water ring, and the two water ring bracket plates are connected by a water ring screw.

[0013] Furthermore, the annular vacuum chamber includes an outer wall of the vacuum chamber, a top plate fixedly connected to the outer wall of the vacuum chamber, a bottom plate detachably connected to the outer wall of the vacuum chamber, and an annular wall fixedly connected to the top plate and the bottom plate respectively, and the outer wall of the annular water storage chamber is detachably connected to the outer wall of the vacuum chamber.

[0014] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0015] The annular water storage chamber in the primary water ring of the utility model can temporarily store clean water under external pressure to release the pressure. The water storage chamber cover can prevent foreign matter from falling into the water ring to avoid contaminating the product. The annular vacuum chamber can extract the water from the inside of the ring wall after cooling the product, and the extracted water can be recycled after treatment. The scraper ring in the secondary water ring can remove an appropriate amount of cooling water from the surface of the bubble to prevent the excessive weight of the water curtain attached to the surface of the bubble from affecting the downward movement of the bubble, avoid wrinkling and deformation of the bubble, and improve the quality of the bubble. The cooling water scraped off by the scraper ring is stored in the water accumulation chamber, discharged from the water outlet of the water accumulation chamber, and recycled after treatment. It can be applied to medical infusion membrane blowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A cross-sectional view of the cooling water ring of the bottom-blowing film blowing machine provided in Example 1 of the utility model;

[0018] Figure 2 In the utility model embodiment 1 Figure 1 A front view of

[0019] Figure 3 This is a schematic structural diagram of the cooling water ring of the bottom-blowing film blowing machine provided in Example 1 of the utility model.

[0020] Icons: 1-primary water ring, 2-secondary water ring, 3-water ring bracket plate, 4-water ring screw, 5-nut, 11-ring wall, 12-annular water storage chamber, 121-water storage chamber cover, 1211-annular groove, 122-spoiler, 13-overflow port, 14-annular vacuum chamber, 141-partition plate, 142-suction port, 143-top plate, 144-outer wall of vacuum chamber, 145-bottom plate, 15-atomizer, 16-vacuum ring groove, 17-water hole, 18-water inlet, 21-ring inner wall, 22-ring outer wall, 23-water accumulation chamber, 24-wiper ring, 25-water outlet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1

[0027] like Figure 1-3 As shown, this embodiment provides a cooling water ring of a bottom-blowing film blowing machine, including a primary water ring 1 and a secondary water ring 2 located below the primary water ring 1, the primary water ring 1 includes a ring wall 11, an annular water storage chamber 12 is formed on the periphery of the ring wall 11, a water inlet 18 is opened on the outer wall of the annular water storage chamber 12, a detachable water storage chamber cover 121 is installed above the annular water storage chamber 12, an overflow port 13 is formed between the water storage chamber cover 121 and the annular wall 11, an annular vacuum chamber 14 is arranged below the annular water storage chamber 12, and the annular vacuum chamber 14 is connected to the inside of the annular wall 11, the secondary water ring 2 includes an inner ring wall 21 and an outer ring wall 22, a water accumulation chamber 23 is formed between the inner ring wall 21 and the outer ring wall 22, and a wiper ring 24 is arranged at the top of the inner ring wall 21.

[0028] The annular water storage chamber 12 in the primary water ring 1 can temporarily store clean water under pressure from the outside to release the pressure. The water storage chamber cover 121 can prevent foreign matter from falling into the water ring to avoid contaminating the product. The annular vacuum chamber 14 can extract the water from the inside of the ring wall 11 after cooling the product, and the extracted water can be recycled after treatment. The scraper ring 24 in the secondary water ring 2 can remove an appropriate amount of cooling water from the surface of the bubble to prevent the weight of the water curtain attached to the surface of the bubble from being too heavy to affect the downward movement of the bubble, avoid the wrinkle deformation of the bubble, and improve the quality of the bubble. The cooling water scraped off by the scraper ring 24 is stored in the water accumulation chamber 23, and is discharged from the water accumulation chamber 23 and recycled after treatment. Among them, a water outlet 25 is provided on the side wall of the water accumulation chamber 23. The end face of the overflow port 13 is an inclined plane with an inclination angle of 45°, and the two ends of the overflow port 13 adopt a 10°R angle transition, where R is the inner diameter of the ring wall 11, which can prevent scratching the surface of the bubble. In addition, the primary water ring 1 and the secondary water ring 2 can be designed with stainless steel to reduce pollution.

[0029] In this embodiment, the annular vacuum chamber 14 includes a vacuum chamber outer wall 144, a top plate 143 fixedly connected to the vacuum chamber outer wall 144, a bottom plate 145 detachably connected to the vacuum chamber outer wall 144, and an annular wall 11 fixedly connected to the top plate 143 and the bottom plate 145, respectively, and the outer wall of the annular water storage chamber 12 is detachably connected to the vacuum chamber outer wall 144. The bottom plate 145 is connected to the vacuum chamber outer wall 144, and the outer wall of the annular water storage chamber 12 is connected to the vacuum chamber outer wall 144 by screws, and the water storage chamber cover plate 121 is snap-fitted to the top of the annular water storage chamber 12. In this way, the primary water ring 1 can be completely disassembled, which is convenient for thorough cleaning of the interior and reduces pollution.

[0030] In this embodiment, a circular spoiler 122 is provided in the annular water storage chamber 12. The spoiler 122 can stabilize the clean water in the annular water storage chamber 12, allowing the clean water with stable pressure and flow to flow out evenly along the overflow port 13 to cool the membrane bubble, thereby avoiding the adverse effects of excessive water pressure and excessive speed on the membrane bubble.

[0031] In this embodiment, a plurality of partition plates 141 are provided in the annular vacuum chamber 14, and the plurality of partition plates 141 divide the annular vacuum chamber 14 into a plurality of independent vacuum zones, each of which is respectively connected to the inside of the annular wall 11. The plurality of vacuum zones can realize the partition buffering of the vacuum pressure, thereby adjusting the closeness between the annular wall 11 and the film bubble at different positions, so as to enhance the closeness between the two, so that the film bubble can be cooled more fully and have a thicker thickness.

[0032] In this embodiment, the inner wall of the ring wall 11 is provided with a vacuum ring groove 16, and a plurality of water holes 17 are opened on the vacuum ring groove 16. Each of the vacuum areas is connected to the inside of the ring wall 11 through the water holes 17, and each of the vacuum areas is provided with a suction port 142 connected to the outside. The suction port 142 is connected to an external vacuum pump, and a negative pressure is formed by the vacuum pump, the suction port 142 and the vacuum area, so that the film bubble can be more easily attached to the inner wall of the ring wall 11; at the same time, the cooling water inside the ring wall 11 can be sucked out from the water holes 17 on the vacuum ring groove 16 and stored in the vacuum area, reducing the cooling water attached to the surface of the film bubble. The two ends of the vacuum ring groove 16 adopt a 2°R angle transition, where R is the inner diameter of the ring wall 11, to prevent scratches on the surface of the film bubble.

[0033] In this embodiment, an atomizer 15 is provided at the bottom of the ring wall 11, and the atomizer 15 is connected to an external water source. The atomizer 15 can pre-cool the primary water ring 1, increase the cooling speed of the primary water ring 1 on the film bubble, replace the traditional water cloth for pre-cooling, and prevent foreign matter from being brought in. The atomizer 15 is detachably connected to the ring wall 11.

[0034] In this embodiment, an annular groove 1211 is provided on the top of the water storage chamber cover 121 to facilitate cleaning of the water storage chamber cover 121 .

[0035] In this embodiment, a water ring bracket plate 3 is provided at the bottom of the primary water ring 1 and the secondary water ring 2, and the two water ring bracket plates 3 are connected by a water ring screw 4. The water ring bracket plate 3 is fixedly connected to the bottom plate 145 and the bottom of the water chamber 23 respectively, and the water ring bracket plate 3 is fixed to the water ring screw 4 by a nut 5.

[0036] The working principle of the cooling water ring of a bottom-blowing film blowing machine is as follows: the primary water ring 1 is pre-cooled by the atomizer 15. When the film bubble enters the inner part of the ring wall 11 from the top of the ring wall 11, the clean water temporarily stored in the annular water storage chamber 12 flows out from the overflow port 13 to cool the film bubble. At the same time, the annular vacuum chamber 14 provides negative pressure to make the film bubble close to the inner wall of the ring wall 11, thereby improving the cooling speed and cooling effect. At the same time, the cooled cooling water passes through the water holes 17 on the vacuum ring groove 16 and enters the multiple vacuum areas of the annular vacuum chamber 14, thereby reducing the cooling water attached to the surface of the film bubble. When the film bubble moves downward to the scraper ring 24, the scraper ring 24 removes the cooling water on the surface of the film bubble for a second time, thereby further reducing the cooling water attached to the surface of the film bubble. The water scraped by the scraper ring 24 is temporarily stored in the water accumulation chamber 23, thereby completing the cooling of the film bubble. After cooling, the primary water ring 1 is completely disassembled to clean its interior, and the secondary water ring 2 is cleaned at the same time for the next use.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooling water ring for a bottom-blowing film blowing machine, characterized in that: It includes a primary water ring and a secondary water ring located below the primary water ring, the primary water ring includes a ring wall, an annular water storage chamber is formed around the ring wall, a water inlet is opened on the outer wall of the annular water storage chamber, a detachable water storage chamber cover is installed above the annular water storage chamber, an overflow port is formed between the water storage chamber cover and the ring wall, an annular vacuum chamber is arranged below the annular water storage chamber, and the annular vacuum chamber is communicated with the inside of the ring wall, the secondary water ring includes an inner ring wall and an outer ring wall, a water accumulation chamber is formed between the inner ring wall and the outer ring wall, and a wiper ring is arranged on the top of the inner ring wall.

2. The cooling water ring of the bottom-blowing film blowing machine according to claim 1, characterized in that: A circular ring-shaped spoiler is arranged in the annular water storage chamber.

3. The cooling water ring of the bottom-blowing film blowing machine according to claim 1, characterized in that: A plurality of partition plates are arranged in the annular vacuum chamber, and the plurality of partition plates divide the annular vacuum chamber into a plurality of independent vacuum areas, and each of the vacuum areas is respectively connected to the inside of the annular wall.

4. The cooling water ring of the bottom-blowing film blowing machine according to claim 3, characterized in that: The inner wall of the ring wall is provided with a vacuum ring groove, and a plurality of water holes are opened on the vacuum ring groove. Each of the vacuum areas is connected with the inside of the ring wall through the water holes, and each of the vacuum areas is provided with a suction port connected with the outside.

5. The cooling water ring of the bottom-blowing film blowing machine according to claim 1, characterized in that: An atomizer is arranged at the bottom of the annular wall, and the atomizer is connected to an external water source.

6. The cooling water ring of the bottom-blowing film blowing machine according to claim 1, characterized in that: An annular groove is arranged on the top of the water storage chamber cover plate.

7. The cooling water ring of the bottom-blowing film blowing machine according to claim 1, characterized in that: The bottoms of the primary water ring and the secondary water ring are both provided with water ring bracket plates, and the two water ring bracket plates are connected by a water ring screw.

8. The cooling water ring of the bottom-blowing film blowing machine according to claim 1, characterized in that: The annular vacuum chamber comprises an outer wall of the vacuum chamber, a top plate fixedly connected to the outer wall of the vacuum chamber, a bottom plate detachably connected to the outer wall of the vacuum chamber, and an annular wall fixedly connected to the top plate and the bottom plate respectively, and the outer wall of the annular water storage chamber is detachably connected to the outer wall of the vacuum chamber.

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