Cooling device for preparing polylactic acid film

Abstract

The utility model discloses a cooling device for polylactic acid film preparation, which belongs to the field of polylactic acid film preparation and comprises a base, the top of the base is rotatably connected with a driving disc, and a plurality of limiting frames for fixing polylactic acid films are annularly distributed on the top of the driving disc. The top of the base is fixedly connected with a drying assembly for drying a polylactic acid film; the cooling assembly is used for cooling the polylactic acid thin film with the high temperature, the cooling assembly comprises a cooling frame fixedly connected to the top of the base, and a connecting frame is fixedly connected to the interior of the cooling frame; by arranging the cooling assembly, the cooling step can be automatically carried out after drying, continuous production and automatic cooling of the polylactic acid film are achieved, the production efficiency is improved, cold air can be evenly and widely sprayed to the polylactic acid film through the design of the wide-mouth groove and the S-shaped channel, and the cooling efficiency and the cooling effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the polylactic acid film preparation technical field, concretely relates to a kind of cooling device for polylactic acid film preparation. BACKGROUND

[0002] Polylactic acid refers to polylactide, and polylactic acid is a polyester polymer obtained by polymerization of lactic acid as the main raw material. It is a new type of biodegradable material. Products made of polylactic acid are biodegradable, biocompatible, glossy, transparent, soft and heat-resistant, and do not cause environmental pollution.

[0003] The utility model discloses a drying device for polylactic acid film production in the utility model patent with publication number CN221622705U, including the bottom plate, the bottom plate top installs the conveying assembly, the conveying assembly includes the containing frame that bottom plate top outer wall rotates and connects, the containing frame circumferential inner wall is fixedly connected with the gear ring, the bottom plate top outer wall is fixedly installed with motor one, the motor one output end coaxially fixedly has the gear rod one, the gear on the top of the gear rod one is engaged with the gear ring, the bottom plate top outer wall is rotatably connected with the gear rod two, the gear on the top of the gear rod two is engaged with the gear ring, the gear rod one and the gear rod two are fixedly sleeved with belt pulley, two the belt pulley is sleeved with the same belt, the utility model discloses a conveying assembly can realize the purpose of fast feeding, which is beneficial to increasing processing efficiency, and the temperature of the material frame will also be reduced after one cycle, so as not to cause burns to the workers.

[0004] The above case in actual use process, when polylactic acid film is dried, the temperature of polylactic acid film itself is high, and the natural cooling rate is slow, so the present application provides a kind of cooling device for polylactic acid film preparation. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of cooling device for polylactic acid film preparation, to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of cooling device for polylactic acid film preparation, including base, the top of the base is rotatably connected with transmission disc, the top of the transmission disc is annularly distributed with multiple limit frame for fixing polylactic acid film, the top of the base is fixedly connected with drying assembly for drying polylactic acid film;Cooling assembly, the cooling assembly is used to cool the polylactic acid film with higher temperature, the cooling assembly includes cooling frame fixedly connected in the top of base, the inside of the cooling frame is fixedly connected with connecting frame, the bottom of the connecting frame is fixedly connected with spray head, one side of the connecting frame is fixedly connected with cold gas pipeline.

[0007] As a preferred implementation form, the inside of the base is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with a driving gear, and the inside of the transmission disc is provided with a cavity.

[0008] As a preferred implementation form, the inside wall of the cavity is provided with internal teeth, and the internal teeth are in meshing connection with the outside of the driving gear.

[0009] As a preferred implementation form, the drying assembly and the cooling assembly are symmetrically distributed on both sides of the transmission disc, and the limiting frame passes through the inside of the drying assembly and the cooling assembly.

[0010] As a preferred implementation form, the length of the connecting frame is greater than the width of the limiting frame, and the connecting frame is located directly above the limiting frame.

[0011] As a preferred implementation form, the inside of the nozzle is provided with a serpentine channel, and the output end of the serpentine channel is provided with a wide-mouth groove.

[0012] Compared with the prior art, the poly lactic acid film preparation cooling device has the following beneficial effects:

[0013] The poly lactic acid film preparation cooling device can automatically cool after drying through the cooling assembly, realizes continuous production and automatic cooling of the poly lactic acid film, and improves the production efficiency.

[0014] The poly lactic acid film preparation cooling device can uniformly and widely spray cold air on the poly lactic acid film through the design of the wide-mouth groove and the serpentine channel, and improves the cooling efficiency and cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the structure of the utility model;

[0016] Figure 2 It is a front view of the base;

[0017] Figure 3 It is a partial sectional view of the cooling assembly;

[0018] Figure 4 It is a sectional view of the nozzle.

[0019] In the drawing: 1, base; 101, driving motor; 102, driving gear; 2, transmission disc; 201, cavity; 202, internal teeth; 3, drying assembly; 4, cooling assembly; 401, cooling frame; 402, cold air pipeline; 403, connecting frame; 404, nozzle; 4041, serpentine channel; 4042, wide-mouth groove; 5, limiting frame. DETAILED DESCRIPTION

[0020] The utility model is further described below in combination with the embodiments.

[0021] The following embodiments are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements of the method of the utility model under the concept premise of the utility model all belong to the range required to be protected by the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of cooling device for preparing polylactic acid film, including base 1, the top of base 1 is rotatably connected with transmission disc 2, the top of transmission disc 2 is annularly distributed with multiple limiting frame 5 for fixing polylactic acid film, the top of base 1 is fixedly connected with drying assembly 3 for drying polylactic acid film;Driving motor 101 is fixedly connected on the output shaft of driving motor 101, the inside of transmission disc 2 is provided with cavity 201, the inner wall of cavity 201 is provided with inner tooth 202, inner tooth 202 and the outside of driving gear 102 are mutually engaged, drying assembly 3 and cooling assembly 4 are symmetrically distributed on the both sides of transmission disc 2, and limiting frame 5 passes through the inside of drying assembly 3 and cooling assembly 4, after the start of device, driving motor 101 in the inside of base 1 starts to work, the output shaft of driving motor 101 drives driving gear 102 to rotate, because the inside of transmission disc 2 is provided with cavity 201, and the inner wall of cavity 201 is provided with inner tooth 202, these inner tooth 202 and the outside of driving gear 102 are mutually engaged, so the rotation of driving gear 102 can drive transmission disc 2 to rotate on the top of base 1, the top of transmission disc 2 is annularly distributed with multiple limiting frame 5, these limiting frame 5 are used to fix polylactic acid film, when transmission disc 2 rotates, polylactic acid film fixed in limiting frame 5 can pass through drying assembly 3 and cooling assembly 4 in turn, drying assembly 3 carries out drying treatment to polylactic acid film, removes its internal moisture or solvent, then, film enters cooling assembly 4 and is cooled, to stabilize its structure and performance, by continuously circulating the above steps, the continuous drying and cooling treatment of polylactic acid film can be realized, and production efficiency is improved.

[0023] It needs to be explained in the above scheme that drying assembly 3 is the existing public technology, so it is not described in more detail.

[0024] The cooling assembly 4 is used for cooling the polylactic acid film with high temperature, and the cooling assembly 4 comprises a cooling frame 401 fixedly connected to the top of the base 1, a connecting frame 403 fixedly connected to the inside of the cooling frame 401, a spray head 404 fixedly connected to the bottom of the connecting frame 403, a cold air pipeline 402 fixedly connected to one side of the connecting frame 403, and the length of the connecting frame 403 is greater than the width of the limiting frame 5, the connecting frame 403 is located directly above the limiting frame 5, a serpentine channel 4041 is arranged in the inside of the spray head 404, a wide-mouth groove 4042 is arranged at the output end of the serpentine channel 4041, the cold air pipeline 402 is used as the cold air input end of the cooling assembly 4 and is connected to the external cold air source, the cold air is conveyed to the inside of the connecting frame 403 through the cold air pipeline 402, and the connecting frame 403 is a distribution and transmission structure of the cold air in the cooling assembly 4. The spray head 404 fixedly connected to the bottom is the outlet of the cold air. The length of the connecting frame 403 is greater than the width of the limiting frame 5, so that the cold air can cover the entire limiting frame 5 and the polylactic acid film in the limiting frame 5, the serpentine channel 4041 arranged in the inside of the spray head 404 increases the flow path of the cold air in the inside of the spray head 404, so that the pressure and flow rate of the cold air are improved. After the cold air passes through the serpentine channel 4041, the cold air is sprayed out from the wide-mouth groove 4042 to form a uniformly distributed cold air curtain. When the driving disc 2 drives the limiting frame 5 and the polylactic acid film in the limiting frame 5 to pass through the cooling assembly 4, the cold air curtain sprayed out by the spray head 404 directly acts on the film to rapidly reduce the temperature of the film. Since the spray head 404 is located directly above the limiting frame 5, the cold air can uniformly cover the entire film surface to achieve efficient cooling. The design of the serpentine channel 4041 and the wide-mouth groove 4042 enables the cold air to be uniformly and efficiently sprayed onto the polylactic acid film to rapidly reduce the temperature of the polylactic acid film and improve the cooling efficiency. The uniform distribution of the cold air ensures the stability and consistency of the polylactic acid film during the cooling process, avoids problems such as film deformation or performance degradation caused by uneven temperature, and thus guarantees the quality of the product. The overall structure of the cooling assembly 4 is compact, and the drying assembly 3 is symmetrically distributed on both sides of the driving disc 2, so that the space resources are fully utilized and the land occupation of the device is reduced. Through optimization of the cold air spraying mode and improvement of the cooling efficiency, the energy consumption and waste gas emission are reduced, and the environmental protection requirement is met.

[0025] The utility model discloses a working principle and use flow: first device starts, the drive motor 101 in the base 1 inside starts work, and the output shaft of drive motor 101 drives drive gear 102 to rotate, because the inside of transmission disc 2 is opened with cavity 201, and is equipped with the internal tooth 202 on the inner wall of cavity 201, these internal tooth 202 and drive gear 102's outside interlock, therefore drive gear 102's rotation will drive transmission disc 2 to rotate at the top of base 1, and the top annular distribution of transmission disc 2 has a plurality of limit frame 5, these limit frame 5 are used for fixed polylactic acid film, when transmission disc 2 rotates, and the polylactic acid film fixed in limit frame 5 will in turn pass through drying assembly 3 and cooling assembly 4, and drying assembly 3 carries out drying treatment to polylactic acid film, removes its internal moisture or solvent, then, film enters cooling assembly 4 and cools, when transmission disc 2 drives limit frame 5 and its polylactic acid film in the cooling assembly 4 of passing, the cold air curtain that the spray head 404 sprays directly acts on the film, rapidly reduces its temperature. Because spray head 404 is located in the direct upper of limit frame 5, and cold air can evenly cover entire film surface, realizes high -efficient cooling, and the design of serpentine channel 4041 and wide -mouthed groove 4042 makes cold air can evenly, high -efficiently spray on polylactic acid film, rapidly reduces its temperature, improves cooling efficiency, and uniform cold air distribution ensures the stability and consistency of polylactic acid film in the cooling process, avoids the problem such as film deformation or performance decline caused by temperature uneven, thereby guarantee the quality of product, through the above-mentioned step of continuously circulating, can realize the continuous drying and cooling treatment to polylactic acid film, improve production efficiency.

[0026] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling device for the production of polylactic acid films, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected with a transmission disc (2), a plurality of limiting frames (5) for fixing polylactic acid film are annularly distributed on the top of the transmission disc (2), and the top of the base (1) is fixedly connected with a drying assembly (3) for drying polylactic acid film. A cooling assembly (4) is arranged for cooling polylactic acid film with high temperature, and the cooling assembly (4) comprises a cooling frame (401) fixedly connected to the top of the base (1), a connecting frame (403) fixedly connected to the inside of the cooling frame (401), a nozzle (404) fixedly connected to the bottom of the connecting frame (403), and a cold air pipeline (402) fixedly connected to one side of the connecting frame (403).

2. The cooling device for preparing a polylactic acid film according to claim 1, characterized by: The inside of the base (1) is fixedly connected with a driving motor (101), and the output shaft of the driving motor (101) is fixedly connected with a driving gear (102).

3. The cooling device for preparing a polylactic acid film according to claim 2, characterized by: An inner tooth (202) is arranged on the inner wall of the cavity (201), and the inner tooth (202) is in mesh with the outside of the driving gear (102).

4. The cooling device for preparing a polylactic acid film according to claim 1, characterized by: The drying assembly (3) and the cooling assembly (4) are symmetrically arranged on both sides of the transmission disc (2), and the limiting frame (5) passes through the inside of the drying assembly (3) and the cooling assembly (4).

5. The cooling device for preparing a polylactic acid film according to claim 1, characterized by: The length of the connecting frame (403) is greater than the width of the limiting frame (5), and the connecting frame (403) is located directly above the limiting frame (5).

6. The cooling device for preparing a polylactic acid film according to claim 1, characterized by: A snakelike channel (4041) is arranged in the inside of the nozzle (404), and a wide groove (4042) is arranged at the output end of the snakelike channel (4041).

Images