Downward blowing air cooling type cooling air ring mechanism and film blowing machine with same
By designing a blow-air-cooled cooling air ring mechanism, the combination of air ring and cold water system is used to solve the problem of microorganisms and pyrogens on the surface of the film caused by cooling water exposure, and the uniform cooling and dimensional stability of the film are achieved.
Patent Information
- Application Number
- CN202411525102.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-01-03
AI Technical Summary
In the existing lower-blown film production process, the problem of cooling water being exposed for a long time to contact the film surface, resulting in excess of microorganisms and pyrogens has not been effectively solved.
A lower air-cooled cooling air ring mechanism is designed, including a ring frame, A air ring, B air ring and C air ring. The cold air is uniformly blown through the superposition structure of the air ring and the internal adjustment ring, and the cold air is passed through the cold water ring and freezing. The water joint further cools down to ensure the cooling effect and dimensional stability of the film surface.
The uniform cooling of the film is achieved, avoiding the problem of microorganisms and pyrogen exceeding the standard caused by long-term exposure of cooling water, and ensuring the consistency of the film size and cooling effect.
Smart Images
Figure CN119238809A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of film blowing machines, in particular to a downward blowing air cooling air ring mechanism and a film blowing machine having the mechanism. Background Art
[0002] The film blowing process is a common production technology for films, especially medical-grade films. The commonly used blowing process uses water as a refrigerant to cool the film. For example, the infusion bag film and bioprocess film currently produced all use the blowing water cooling process because the film thickness exceeds 200 microns. Now more and more film production processes use the blowing process, mainly for food and medicine-related film production.
[0003] At present, there are usually three methods for film production: cast film, top blowing and bottom blowing. The bottom blowing film production process is a water cooling process. The water used in this production process is the cooling medium for the film extrusion process, commonly known as cooling water. The cooling water is directly exposed to the workshop production environment and is in direct contact with the outer surface of the film. Due to long-term exposure and contact, the microorganisms and pyrogens on the surface of the film during the production process will exceed the standard.
[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention
[0005] 1. Technical issues to be resolved
[0006] In view of the deficiencies in the prior art, the present invention provides a downward-blowing air-cooled cooling air ring mechanism and a film blowing machine having the mechanism, which has the advantages of three-stage air cooling, etc., and solves the problem that long-term exposure and contact with cooling water may cause excessive levels of microorganisms, pyrogens, etc. on the surface of the film during the production process.
[0007] (II) Technical solution
[0008] In order to solve the technical problem that long-term exposure and contact with cooling water may cause excessive microorganisms, pyrogens, etc. on the film surface during the production process, the present invention provides the following technical solutions:
[0009] A downward-blowing air-cooled cooling air ring mechanism comprises a ring frame, an air ring A is fixedly installed on the lower part of the ring frame, an air ring C is fixedly installed on the upper part, and an air ring B is movably arranged on the middle part of the ring frame along the central axis direction, and the central axes of the air rings A, B and C coincide with each other, so as to gradually cool down the hot film of the extruded thin film.
[0010] Preferably, the A wind ring comprises a first sub-wind ring and a second sub-wind ring, and the first sub-wind ring and the second sub-wind ring are fixed together and fixedly mounted on the ring frame;
[0011] Wherein: the first sub-wind ring comprises a first A wind ring adjustment ring, a first A wind ring upper ring, a first A wind ring air inlet ring, a first A wind ring bottom ring, and a first A wind ring air nozzle; the first A wind ring adjustment ring, the first A wind ring upper ring, the first A wind ring air inlet ring and the first A wind ring bottom ring are assembled to form a first wind cavity, and a first guide plate is installed in the first wind cavity;
[0012] The second sub-wind ring includes a second A wind ring adjustment ring, a second A wind ring upper ring, a second A wind ring air inlet ring, a second A wind ring bottom ring, and a second A wind ring air nozzle. The second A wind ring adjustment ring, the second A wind ring upper ring, the second A wind ring air inlet ring, and the second A wind ring bottom ring are assembled to form a second wind cavity, and a second guide plate is installed in the second wind cavity.
[0013] Preferably, the C wind ring includes a C wind ring upper ring and a C wind ring bottom ring, the C wind ring upper ring and the C wind ring bottom ring form a C wind ring air cavity, the C wind ring air cavity is equipped with a C wind ring air nozzle, a C wind ring guide plate is arranged in the C wind ring air cavity, a cold water circle is arranged at the outlet of the C wind ring air cavity, the cold water circle is connected to a chilled water joint, and a C wind ring adjustment ring is installed at the outlet of the C wind ring air cavity.
[0014] Preferably, the B wind ring includes a B wind ring upper adjustment ring, a B wind ring upper ring, a B wind ring inner adjustment ring, a B wind ring bottom ring and a B wind ring air nozzle, wherein the B wind ring upper ring and the B wind ring bottom ring are integrally formed to form a B wind ring air cavity, the B wind ring air nozzle is connected to the B wind ring air cavity, and the B wind ring upper adjustment ring and the B wind ring inner adjustment ring are arranged in the B wind ring air cavity.
[0015] Preferably, the integrally formed B wind ring upper ring and B wind ring bottom ring are installed on the B wind ring bracket by bolts, and a wind ring adjustment column is passed through and threadedly connected to one side of the B wind ring bracket, and the wind ring adjustment column is rotatably installed on the ring frame, and the wind ring adjustment column is fixedly installed on the output shaft of the motor, so as to enable the motor to drive the wind ring adjustment column to rotate.
[0016] Preferably, the A air ring and the B air ring are respectively mounted on the A air ring bracket and the B air ring bracket by bolts, and the A air ring bracket and the B air ring bracket are fixedly mounted on the ring frame.
[0017] A film blowing machine comprises a downward blowing air cooling air ring mechanism and a film blowing die head of the film blowing machine, wherein the ring frame is fixedly mounted on the film blowing die head.
[0018] (III) Beneficial effects
[0019] Compared with the prior art, the present invention provides a downward air-cooling cooling air ring mechanism and a film blowing machine having the mechanism, which has the following beneficial effects:
[0020] The present invention superimposes A air ring, B air ring and C air ring, and cooperates with the adjustment rings inside each of the A air ring, B air ring and C air ring, so that the cold air is blown evenly to the surface of the membrane to cool the membrane. At the same time, the internal guide plate can effectively adjust the speed of the cold air, further improving the uniformity of the cold air blowing. In addition, cooling water is introduced into the cold water circle 404 through the chilled water joint 405, and the membrane is further cooled by the cold water circle 404. When the membrane is blown, it contacts the cold water circle 404 to play a sizing role, which can not only ensure the cooling effect, but also determine the diameter of the film and ensure the product size, thereby solving the problem of long-term exposure and contact with cooling water, which will cause excessive microorganisms, pyrogens, etc. on the surface of the film during the production process. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic cross-sectional view of the air ring structure A of the present invention;
[0022] Figure 2 It is a simplified cross-sectional view of the B air ring structure of the present invention;
[0023] Figure 3 It is a simplified cross-sectional view of the C air ring structure of the present invention.
[0024] In the figure: 2, A air ring; 201, first A air ring adjustment ring; 202, first A air ring upper ring; 203, first A air ring inlet ring; 204, first A air ring bottom ring; 205, second A air ring adjustment ring; 206, second A air ring upper ring; 207, second A air ring inlet ring; 208, second A air ring bottom ring; 209, second A air ring nozzle; 210, first A air ring nozzle; 3, B air ring; 301, B air ring upper adjustment ring; 302, B air ring upper ring; 303, B air ring inner adjustment ring; 304, B air ring bottom ring; 305, B air ring nozzle; 4, C air ring; 401, C air ring upper ring; 402, C air ring bottom ring; 403, C air ring nozzle; 404, cold water circle; 405, chilled water joint. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.
[0026] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a downward blowing air cooling air ring mechanism and a film blowing machine having the mechanism.
[0027] See also Figure 1-Figure 3A downward air-cooled cooling air ring mechanism comprises a ring frame, an A air ring 2 is fixedly installed at the lower part of the ring frame, a C air ring 4 is fixedly installed at the upper part, and a B air ring 3 is movably arranged at the middle part of the ring frame along the central axis direction, and the central axes of the A air ring 2, the B air ring 3 and the C air ring 4 coincide with each other, so as to gradually cool down the hot film of the extruded thin film.
[0028] Further, for the above-mentioned A wind ring 2, the A wind ring 2 includes a first sub-wind ring and a second sub-wind ring, and the first sub-wind ring and the second sub-wind ring are fixed together and fixedly mounted on the ring frame;
[0029] Wherein: the first sub-wind ring comprises a first A wind ring adjustment ring 201, a first A wind ring upper ring 202, a first A wind ring air inlet ring 203, a first A wind ring bottom ring 204, and a first A wind ring air nozzle 204; the first A wind ring adjustment ring 201, the first A wind ring upper ring 202, the first A wind ring air inlet ring 203 and the first A wind ring bottom ring 204 are assembled to form a first wind cavity, and a first guide plate is installed in the first wind cavity;
[0030] The second sub-wind ring includes a second A wind ring adjustment ring 205, a second A wind ring upper ring 206, a second A wind ring air inlet ring 207, a second A wind ring bottom ring 208, and a second A wind ring air nozzle 209. The second A wind ring adjustment ring 205, the second A wind ring upper ring 206, the second A wind ring air inlet ring 207, and the second A wind ring bottom ring 208 are assembled to form a second wind cavity, and a second guide plate is installed in the second wind cavity.
[0031] After the fan blows the cold air into the first air cavity and the second air cavity, it is evenly blown to the membrane surface through the first A wind ring adjustment ring 201 and the second A wind ring adjustment ring 205 to cool the membrane. The first guide plate and the second guide plate arranged in the first wind cavity and the second wind cavity are used to adjust the speed of the wind in the first wind cavity and the second wind cavity so that the wind can be blown out evenly; the first A wind ring adjustment ring 201 and the second A wind ring adjustment ring 205 are both adjustable, and the two are respectively fixed to the first wind cavity and the second wind cavity by screws, and the two can be fine-tuned by turning the screws.
[0032] Further, for the above-mentioned C wind ring 4, the C wind ring 4 includes a C wind ring upper ring 401 and a C wind ring bottom ring 402, the C wind ring upper ring 401 and the C wind ring bottom ring 402 form a C wind ring air cavity, the C wind ring air cavity is installed with a C wind ring air nozzle 403, a C wind ring guide plate is arranged in the C wind ring air cavity, a cold water circle 404 is arranged at the outlet of the C wind ring air cavity, the cold water circle 404 is connected with a chilled water joint 405, and a C wind ring adjustment ring is installed at the outlet of the C wind ring air cavity;
[0033] Cooling water is introduced into the cold water ring 404 through the chilled water joint 405, and the film is further cooled by the cold water ring 404. When the film is blown up, it contacts the cold water ring 404, which plays a role in sizing, which can not only ensure the cooling effect, but also determine the film diameter and ensure the product size. The C wind ring guide plate adjusts the speed of the wind in the wind ring so that the wind can be blown out evenly. The C wind ring adjustment ring is installed on the C wind ring air cavity by screws, and the C wind ring adjustment ring is fine-tuned by turning the screws.
[0034] Further, for the above-mentioned B wind ring 3, the B wind ring 3 includes a B wind ring upper adjustment ring 301, a B wind ring upper ring 302, a B wind ring inner adjustment ring 303, a B wind ring bottom ring 304 and a B wind ring air nozzle 305, wherein the B wind ring upper ring 302 and the B wind ring bottom ring 304 are integrally formed and form a B wind ring air cavity, the B wind ring air nozzle 305 is connected to the B wind ring air cavity, and the B wind ring air cavity is provided with a B wind ring upper adjustment ring 301 and a B wind ring inner adjustment ring 303; the integrally formed B wind ring upper ring 302 and B wind ring bottom ring 304 are installed on the B wind ring bracket by bolts, and an wind ring adjustment column is penetrated and threadedly connected on one side of the B wind ring bracket, the wind ring adjustment column is rotatably installed on the ring frame, and the wind ring adjustment column is fixedly installed on the output shaft of the motor, which is used to enable the motor to drive the wind ring adjustment column to rotate.
[0035] The motor drives the air ring adjustment column to rotate, so that the air ring adjustment column drives the B air ring as a whole to move along the axis through the B air ring bracket, and can be adjusted up and down to meet the requirements of the production process. The principles of other components in the B air ring are the same as those of the A air ring and the C air ring.
[0036] Furthermore, for the above-mentioned A air ring 2 and B air ring 3, the A air ring 2 and B air ring 3 are respectively installed on the A air ring bracket and the B air ring bracket by bolts, and the A air ring bracket and the B air ring bracket are fixedly installed on the ring frame.
[0037] The second A wind ring nozzle 209 and the first A wind ring nozzle 210, the B wind ring nozzle 305, and the C wind ring nozzle 403 are all connected to a variable frequency fan via a circular stainless steel tube to supply air; all air rings are made of stainless steel to ensure usability and safety.
[0038] The above-mentioned cold air temperature is maintained at -10-15°C.
[0039] The present invention uses the form of superimposed A air ring, B air ring and C air ring, and cooperates with the adjustment rings inside each of the A air ring, B air ring and C air ring, so that cold air is evenly blown onto the surface of the film to cool the film. At the same time, the internal guide plate can effectively adjust the speed of the cold air, further improving the uniformity of the cold air blowing. In addition, cooling water is introduced into the cold water circle 404 through the chilled water joint 405, and the film is further cooled by the cold water circle 404. When the film is blown, it contacts the cold water circle 404 to play a sizing role, which can not only ensure the cooling effect, but also determine the film diameter and ensure the product size, thereby solving the problem of long-term exposure and contact with cooling water, which will cause excessive microorganisms, pyrogens, etc. on the surface of the film during the production process.
[0040] A film blowing machine comprises a downward blowing air cooling air ring mechanism and a film blowing die head of the film blowing machine, wherein the ring frame is fixedly mounted on the film blowing die head.
[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A downward blowing air cooling air ring mechanism, comprising a ring frame, characterized in that: An A wind ring (2) is fixedly mounted on the lower part of the ring frame, and a C wind ring (4) is fixedly mounted on the upper part. A B wind ring (3) is movably mounted on the middle part of the ring frame along the central axis. The central axes of the A wind ring (2), the B wind ring (3) and the C wind ring (4) coincide with each other, so as to gradually cool down the hot extruded film.
2. The downward blowing air cooling air ring mechanism according to claim 1, characterized in that: The A wind ring (2) comprises a first sub-wind ring and a second sub-wind ring, wherein the first sub-wind ring and the second sub-wind ring are fixed together and fixedly mounted on the ring frame; Wherein: the first sub-wind ring comprises a first A wind ring adjustment ring (201), a first A wind ring upper ring (202), a first A wind ring air inlet ring (203), a first A wind ring bottom ring (204), and a first A wind ring air nozzle (209); the first A wind ring adjustment ring (201), the first A wind ring upper ring (202), the first A wind ring air inlet ring (203), and the first A wind ring bottom ring (204) are assembled to form a first wind cavity; a first guide plate is installed in the first wind cavity; The second sub-wind ring comprises a second A wind ring adjustment ring (205), a second A wind ring upper ring (206), a second A wind ring air inlet ring (207), a second A wind ring bottom ring (208), and a second A wind ring air nozzle (209); the second A wind ring adjustment ring (205), the second A wind ring upper ring (206), the second A wind ring air inlet ring (207), and the second A wind ring bottom ring (208) are assembled to form a second wind cavity; a second guide plate is installed in the second wind cavity.
3. The downward blowing air cooling air ring mechanism according to claim 1, characterized in that: The C wind ring (4) comprises a C wind ring upper ring (401) and a C wind ring bottom ring (402), wherein the C wind ring upper ring (401) and the C wind ring bottom ring (402) form a C wind ring air cavity, wherein the C wind ring air cavity is provided with a C wind ring air nozzle (403), wherein a C wind ring guide plate is provided in the C wind ring air cavity, wherein a cold water ring (404) is provided at the outlet of the C wind ring air cavity, wherein the cold water ring (404) is connected to a chilled water joint (405), and wherein a C wind ring adjustment ring is provided at the outlet of the C wind ring air cavity.
4. The downward blowing air cooling air ring mechanism according to claim 1, characterized in that: The B wind ring (3) comprises a B wind ring upper adjustment ring (301), a B wind ring upper ring (302), a B wind ring inner adjustment ring (303), a B wind ring bottom ring (304) and a B wind ring air nozzle (305), wherein the B wind ring upper ring (302) and the B wind ring bottom ring (304) are integrally formed to form a B wind ring air cavity, the B wind ring air nozzle (305) is connected to the B wind ring air cavity, and the B wind ring upper adjustment ring (301) and the B wind ring inner adjustment ring (303) are arranged in the B wind ring air cavity.
5. The downward blowing air cooling air ring mechanism according to claim 4, characterized in that: An integrally formed B wind ring upper ring (302) and a B wind ring bottom ring (304) are mounted on a B wind ring bracket by means of bolts, and a wind ring adjustment column is passed through and threadedly connected to one side of the B wind ring bracket, the wind ring adjustment column is rotatably mounted on the ring bracket, and the wind ring adjustment column is fixedly mounted on the output shaft of a motor, so as to enable the motor to drive the wind ring adjustment column to rotate.
6. The downward blowing air cooling air ring mechanism according to claim 1, characterized in that: The A wind ring (2) and the B wind ring (3) are respectively mounted on the A wind ring bracket and the B wind ring bracket by means of bolts, and the A wind ring bracket and the B wind ring bracket are fixedly mounted on the ring frame.
7. A film blowing machine, comprising a downward blowing air cooling air ring mechanism as described in any one of claims 1 to 6, characterized in that: It also includes a film blowing die head of a film blowing machine, and the ring frame is fixedly installed on the film blowing die head.