Cooling equipment for plastic film production

Abstract

The utility model relates to cooling equipment for plastic film production, which comprises a box body, two side walls of the box body are correspondingly provided with a feed port and a discharge port, two sides in the box body are provided with driving rollers I, a driving roller II is arranged below a position between the two groups of driving rollers I, and the driving rollers II are arranged below the position between the two groups of driving rollers II. An air inlet pipe and a triangular cooling box which are located between the two sets of driving rollers I are sequentially arranged at the top of the driving roller II from bottom to top, air outlet nozzles are evenly arranged on the two side walls of the top of the air inlet pipe, and the air outlet nozzles are obliquely arranged in the direction of the corresponding driving rollers I. The top of the cooling box is connected with the bottom of the box body through an overflow pipe and a circulating pipe. A water pump is arranged on the circulating pipe; a spraying pipe and a water removing mechanism which are located below the corresponding driving roller I are arranged in the box body, the spraying pipe and the feeding port are arranged on the same side, and atomizing nozzles are evenly arranged on one side wall of the bottom of the spraying pipe. Plastic films can be effectively cooled, and the situation that the temperature is too high when the plastic films are wound is prevented.

Description

Technical Field

[0001] The present invention relates to the field of plastic film production, and particularly to a cooling device for plastic film production. Background Art

[0002] Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins are used for packaging and as a coating layer. After the plastic particles are melted and drawn into a film, the temperature of the plastic film is relatively high. Before winding, the plastic film needs to be cooled. In the prior art, air cooling is mostly used to cool the plastic film by a fan. The disadvantage of this cooling method is that if the production speed of the plastic film is relatively fast and the time for the plastic film to pass through the air cooling area is short, the plastic film will be wound into a bundle before the temperature is completely reduced to a suitable temperature, and the plastic film is prone to tearing after being bundled.

[0003] Therefore, there is a cooling device for plastic film production with the patent number CN214605444U to solve the above problems. However, when the device is in use, there are the following defects: for example, both the liquid sprayed by its atomizing nozzle or the gas sprayed by the gas pipeline are vertically sprayed towards the plastic film, resulting in a large impact force on the plastic film that is straightened and in the process of transportation, which is easy to damage it and affect its safety. At the same time, when the liquid sprayed from above drips on the plastic film and is not cleaned in time, the liquid is easy to gather on its top surface and generate a downward pulling force on the plastic film, which will affect the safety of the plastic film during the entire journey from being transported to the discharge port and being cleaned by the cotton cloth brush. Summary of the Invention

[0004] The purpose of the present invention is to provide a cooling device for plastic film production.

[0005] The technical problems of the present invention are mainly solved by the following technical solutions:

[0006] A cooling device for plastic film production includes a box body, and a feed inlet and a discharge outlet are correspondingly arranged on two side walls of the box body:

[0007] On both sides inside the box body, driving rollers I are arranged. Below the two driving rollers I, a driving roller II is arranged. And an air inlet pipe and a triangular cooling box located between the two driving rollers I are sequentially arranged from bottom to top at the top of the driving roller II. The top two side walls of the air inlet pipe are evenly provided with air outlet nozzles, and the air outlet nozzles are inclined towards the corresponding driving roller I. The top of the cooling box is connected to the bottom of the box body through an overflow pipe and a circulation pipe, and a water pump is arranged on the circulation pipe;

[0008] A spray pipe and a water removal mechanism are arranged in the box body below the corresponding driving roller I. The spray pipe is arranged on the same side as the feed inlet, and atomizing nozzles are evenly arranged on one side wall of the bottom of the spray pipe. The atomizing nozzles are inclined towards the driving roller II. The water removal mechanism includes a rotating roller. A water removal layer is arranged on the outer wall of the rotating roller, and an inclined plate tangent to the water removal layer is arranged on one side of the bottom of the box body.

[0009] Preferably, the circulating pipe is connected to the bottom of the cooling box, and the overflow pipe is connected to the top of the cooling box. The cooling box is in the shape of an isosceles triangle set upside down. The top end of the cooling box extends directly above the space between the two groups of driving rollers I, and a temperature sensor is also arranged in the cooling box.

[0010] Preferably, an exhaust pipe is arranged on the top of the box body, and a water outlet pipe is arranged on the bottom of the box body.

[0011] Preferably, a plurality of support rollers are arranged in the box body near the feed inlet and the discharge outlet. The top ends of the support rollers are flush with the top ends of the driving rollers I.

[0012] Preferably, both the driving roller I and the rotating roller are driven by motors to rotate clockwise, and the driving roller II is driven by a motor to rotate counterclockwise.

[0013] Preferably, the inclined plate is located below the water removal mechanism and the discharge outlet, and the topmost end of the inclined plate is tangent to the bottom side of the water removal mechanism.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. In the present invention, cold air is drawn into the air inlet pipe and sprayed obliquely upward by the air outlet nozzles inclined on both sides, so that the sprayed gas acts obliquely on the top surface of the plastic film, preventing the sprayed gas from acting vertically on the top surface of the plastic film, thereby reducing the impact force generated by the cooling gas on the plastic film. While ensuring its cooling and temperature reduction, it can also reduce the damage caused by the air flow to the plastic film.

[0016] 2. In the present invention, the coolant is introduced into the spray pipe and sprayed obliquely downward by a plurality of atomizing nozzles on the bottom inclined surface of the plastic film, so that the sprayed liquid acts obliquely on the bottom end surface of the plastic film, preventing the sprayed liquid from acting vertically on the bottom end surface of the plastic film, thereby reducing the impact force generated by the cooling liquid on the plastic film. While ensuring its cooling and temperature reduction, it can also reduce the damage caused by the sprayed liquid to the plastic film. At the same time, since the liquid acts on the bottom inclined surface of the plastic film, it is easy to drip from the bottom end surface of the plastic film under the influence of gravity, so as to improve its water removal efficiency while reducing the probability of the liquid adhering to the plastic film, and preventing it from accumulating on the plastic film for a long time and affecting its safety. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a right view of the present invention.

[0019] In the figure: 1, box body; 2, feed inlet; 3, discharge outlet; 4, plastic film; 5, driving roller I; 6, driving roller II; 7, air inlet pipe; 8, cooling box; 9, air outlet nozzle; 10, circulation pipe; 11, overflow pipe; 12, water pump; 13, spray pipe; 14, water removal mechanism, 141, rotating roller, 142, water removal layer, 143, inclined plate; 15, atomizing nozzle; 16, supporting roller. Specific embodiments

[0020] Next, through embodiments and in conjunction with the attached Figure 1-2 , the technical solution of the present invention will be further specifically described.

[0021] A cooling device for plastic film production includes a box body 1, and a feed inlet 2 and a discharge outlet 3 are correspondingly arranged on both side walls of the box body 1:

[0022] On both sides inside the box body 1, driving rollers I 5 are arranged. Below the two groups of driving rollers I 5, a driving roller II 6 is arranged. On the top of the driving roller II 6, an air inlet pipe 7 and a triangular cooling box 8 located between the two groups of driving rollers I 5 are arranged in sequence from bottom to top. On both side walls of the top of the air inlet pipe 7, air outlet nozzles 9 are evenly arranged, and the air outlet nozzles 9 are inclined towards the corresponding driving roller I 5. The top of the cooling box 8 is connected to the bottom of the box body 1 through an overflow pipe 11 and a circulation pipe 10, and a water pump 12 is arranged on the circulation pipe 10;

[0023] Inside the box body 1, a spray pipe 13 and a water removal mechanism 14 are arranged below the corresponding driving roller I 5. The spray pipe 13 is arranged on the same side as the feed inlet 2, and atomizing nozzles 15 are evenly arranged on one side wall of the bottom of the spray pipe 13. The atomizing nozzles 15 are inclined towards the driving roller II 6. The water removal mechanism 14 includes a rotating roller 141, and a water removal layer 142 is arranged on the outer wall of the rotating roller 141. On one side of the bottom inside the box body 1, an inclined plate 143 tangent to the water removal layer 142 is arranged.

[0024] In this embodiment, the circulation pipe 10 is connected to the bottom of the cooling box 8, and the overflow pipe 11 is connected to the top of the cooling box 8. The cooling box 8 is arranged in an inverted isosceles triangle, and the top end of the cooling box 8 extends to directly above the two groups of driving rollers I 5. A temperature sensor is also arranged inside the cooling box 8.

[0025] In this embodiment, an exhaust pipe is arranged on the top of the box body 1, and a water outlet pipe is arranged on the bottom of the box body 1.

[0026] As Figure 1As shown, multiple support rollers 16 are arranged inside the box body 1 near the feeding port 2 and the discharging port 3, and the top ends of the support rollers 16 are flush with the top ends of the driving roller I5.

[0027] As Figure 1 shown, both the driving roller I5 and the rotating roller 141 are driven by motors to rotate clockwise, and the driving roller II6 is driven by a motor to rotate counterclockwise.

[0028] As Figure 1 shown, the inclined plate 143 is located below the water removal mechanism 14 and the discharging port 3, and the topmost end of the inclined plate 143 is tangent to the bottom side of the water removal mechanism 14.

[0029] The usage method of the present invention: As Figure 1 shown, the plastic film 4 is driven to slide inside the box body 1 by the rotating driving roller I5 and the driving roller II6, and at the same time, the plastic film 4 inside the box body 1 is bent by the driving roller I5 and the driving roller II6, thereby extending the path of the plastic film 4 inside the box body 1 to facilitate subsequent full cooling work on it;

[0030] When cooling the plastic film 4, cold air is drawn into the air inlet pipe 7 and sprayed obliquely upward by the air outlet nozzles 9 inclined on both sides, so that the sprayed gas acts obliquely on the top surface of the plastic film 4, preventing the sprayed gas from acting vertically on the top surface of the plastic film 4 to reduce the impact force generated by the cooling gas on the plastic film 4. While ensuring cooling and temperature reduction, it can also reduce the damage caused by the air flow to the plastic film 4. At the same time, the gas sprayed by the air outlet nozzles 9 is blocked by the inclined walls on both sides of the cooling box 8 to prevent the gas from flowing directly upward and being discharged through the air outlet pipe, but guiding the gas to flow in both side directions, so that it can fully contact the top surface of the plastic film 4 for temperature reduction work;

[0031] Among them, the cooling liquid is introduced into the spray pipe 13 and sprayed obliquely downward by a number of atomizing nozzles 15 on the bottom inclined surface of the plastic film 4, so that the sprayed liquid acts obliquely on the bottom end surface of the plastic film 4, preventing the sprayed liquid from acting vertically on the bottom end surface of the plastic film 4 to reduce the impact force generated by the cooling liquid on the plastic film 4. While ensuring cooling and temperature reduction, it can also reduce the damage caused by the sprayed liquid to the plastic film 4. At the same time, because the liquid acts on the bottom inclined surface of the plastic film 4, it is easy to drip from the bottom end surface of the plastic film 4 under the influence of gravity, which can improve its water removal efficiency while reducing the probability of the liquid adhering to the plastic film 4, preventing its long-term accumulation on the plastic film 4 and affecting its safety;

[0032] When the bottom end face of the plastic film 4 cooled by spraying moves to the water removal mechanism 14, the rotating roller 141 drives the water removal layer 142 made of flexible water-absorbing material (such as cotton products, etc.) to contact the bottom end face of the plastic film 4, so as to absorb the possible liquid on its bottom end face and play a role in removing water. When the water absorption layer 142 is driven by the rotating roller 141 to the inclined plate 143, the top of the inclined plate 143 will scrape and squeeze the water absorption layer 142 to perform squeezing water removal work on the water absorption layer 142, preventing a large amount of liquid from being contained inside and affecting the subsequent water removal work on the plastic film 4.

[0033] During the above process, the water pump 12 pumps the accumulated liquid at the bottom of the box body 1 into the cooling box 8 through the circulation pipe 10, so that the residual cold air in the coolant cools the top space in the box body 1 through the side wall of the cooling box 8. When the liquid level in the cooling box 8 is too high, it will flow back to the bottom of the box body 1 through the overflow pipe 11.

[0034] The above has described the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A cooling device for plastic film production, comprising a box, wherein a feed inlet and a discharge outlet are correspondingly arranged on the two side walls of the box, characterized in that: Drive rollers I are arranged on both sides of the box body, wherein a drive roller II is arranged below the two groups of drive rollers I, and an air inlet pipe and a triangular cooling box located between the two groups of drive rollers I are arranged in sequence from bottom to top on the top of the drive roller II, and air outlet nozzles are evenly arranged on both side walls of the top of the air inlet pipe, and the air outlet nozzles are arranged obliquely toward the corresponding drive roller I direction, and the top of the cooling box is connected to the bottom of the box body through an overflow pipe and a circulation pipe, wherein a water pump is arranged on the circulation pipe; The box body is provided with a spray pipe and a water removal mechanism located below the corresponding driving roller I, wherein the spray pipe is arranged on the same side as the feed port, and atomizing nozzles are evenly arranged on one side wall of the bottom of the spray pipe, and the atomizing nozzles are inclined toward the driving roller II. The water removal mechanism includes a rotating roller, wherein a water removal layer is provided on the outer wall of the rotating roller, and an inclined plate tangent to the water removal layer is provided on one side of the bottom of the box body.

2. A cooling device for plastic film production according to claim 1, characterized in that: The circulation pipe is connected to the bottom of the cooling box, wherein the overflow pipe is connected to the top of the cooling box, and the cooling box is an inverted isosceles triangle, wherein the top of the cooling box extends to just above between the two sets of driving rollers I, and a temperature sensor is also arranged in the cooling box.

3. A cooling device for plastic film production according to claim 1, characterized in that: An exhaust pipe is arranged on the top of the box body, and a water outlet pipe is arranged on the bottom of the box body.

4. A cooling device for plastic film production according to claim 1, characterized in that: The box body is provided with a plurality of groups of supporting rollers near the feed port and the discharge port, wherein the top of the supporting roller is flush with the top of the driving roller I.

5. A cooling device for plastic film production according to claim 1, characterized in that: The driving roller I and the rotating roller are both driven by a motor to rotate clockwise, and the driving roller II is driven by a motor to rotate counterclockwise.

6. A cooling device for plastic film production according to claim 1, characterized in that: The inclined plate is located below the water removal mechanism and the discharge port, wherein the top end of the inclined plate is tangent to one side of the bottom of the water removal mechanism.

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