Rapid and uniform drying device for PET sheet production and processing

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) sheet drying, in particular to a quick and uniform drying device for PET sheet production and processing, which comprises a drying seat, a mesh belt conveying belt for conveying PET sheets is arranged at the top of the drying seat, a drying frame for drying the PET sheets is arranged at the top of the drying seat, and two air conveying pipes are arranged in the drying frame. The opposite sides of the two air conveying pipes communicate with a plurality of air outlet nozzles, residual water stains on the mesh belt conveying belt can be adsorbed through the water absorption sponge, the phenomenon that the residual water stains affect the later drying efficiency of PET sheets is avoided, the water absorption sponge can rotate under the action of the rotating rod while adsorbing the water stains, and therefore the water absorption sponge abuts against the extrusion rollers, and the extrusion rollers are driven by the rotating rod to rotate. And a squeezing roller is matched with a first spring telescopic rod to work, so that the water absorbing sponge can be squeezed, water stains in the water absorbing sponge can be squeezed out, and the situation that the interior of the water absorbing sponge is full and cannot adsorb the water stains on the mesh belt conveying belt is avoided.

Description

Technical Field

[0001] This utility model relates to the field of PET sheet drying technology, specifically to a rapid and uniform drying device for PET sheet production and processing. Background Technology

[0002] The production process of PET sheets first involves the transesterification reaction of dimethyl terephthalate and ethylene glycol, or the esterification reaction of terephthalic acid and ethylene glycol, to synthesize diethyl terephthalate. Subsequently, PET, a crystalline saturated polyester, is obtained through a polycondensation reaction. It is typically milky white or light yellow, with high crystallinity and a smooth, glossy surface. Currently, after PET sheet production, it requires cleaning, drying, and packaging.

[0003] Chinese Patent Publication No. CN218764436U discloses a drying device for PET sheet production and processing, belonging to the technical field of PET sheet processing equipment. This drying device includes a workbench, a conveyor belt on top of the workbench, a drying assembly on the outside of the conveyor belt, fixed legs at the four corners of the workbench bottom, casters on the bottom of each fixed leg, and reinforcing rods on the outside of each fixed leg. A housing is fixedly connected to the top of the workbench. This device solves the problem that after PET sheets are cleaned following production, they need to be dried and packaged. Existing drying devices are relatively simple in structure, typically using single-duct drying equipment. However, this method not only has poor drying effect but also low drying efficiency, resulting in unsatisfactory drying results, affecting production efficiency, and causing inconvenience to users.

[0004] This device involves placing cleaned PET sheets on a conveyor belt and drying them using a drying assembly. However, because the top and bottom of the freshly cleaned PET sheets are wet, placing only the sheets on the conveyor belt results in only the top of the sheets being dried, while the bottom, where the sheets contact the conveyor belt, remains ineffective. Furthermore, these water stains adhere to the conveyor belt, thus affecting the subsequent drying process of the PET sheets. Utility Model Content

[0005] To address the aforementioned issues, a rapid and uniform drying device for PET sheet production is provided. This device utilizes an absorbent sponge to absorb residual water stains on the conveyor belt, preventing these stains from affecting the subsequent drying efficiency of the PET sheets. While absorbing water, the absorbent sponge also rotates under the action of a rotating rod, thus coming into contact with the squeeze roller. The squeeze roller, in conjunction with a first spring telescopic rod, squeezes the absorbent sponge, squeezing out the water stains inside and preventing the sponge from becoming saturated and unable to absorb water stains from the conveyor belt.

[0006] To address the problems of existing technologies, this utility model provides a rapid and uniform drying device for PET sheet production and processing, including a drying base. A mesh conveyor belt for transporting PET sheets is installed on the top of the drying base. A drying frame for drying the PET sheets is also installed on the top of the drying base. Two air supply pipes are installed inside the drying frame, and multiple air outlets are connected to opposite sides of each of the two air supply pipes. A water-absorbing component for absorbing water from the mesh conveyor belt is installed on the top of one side of the drying base. A heating component for heating the drying frame is also installed on the top of the drying base.

[0007] Preferably, the water-absorbing assembly includes symmetrical support blocks arranged on the top of the drying seat, a rotating rod rotatably arranged between the two support blocks, and an absorbent sponge that contacts the mesh conveyor belt is arranged on the outside of the rotating rod.

[0008] Preferably, an installation block is provided between the two support blocks, and a plurality of first spring telescopic rods are provided on the top of the installation block. The telescopic ends of the first spring telescopic rods are provided with installation frames. The interior of the installation frame is provided with a squeezing roller that abuts against the water-absorbing sponge. The top of the drying seat is provided with a water collection frame for collecting water stains.

[0009] Preferably, the heating assembly includes an air intake pump, a drive box, and a filter box disposed on the top of the drying seat. The input end of the air intake pump is connected to the interior of the drive box through a pipe. One side of the drive box is connected to the interior of the filter box through a pipe. One side of the filter box has multiple through holes for air intake. A heating tube is disposed inside the filter box. The output end of the air intake pump is connected to the air supply pipe.

[0010] Preferably, the filter box is provided with a plurality of second spring telescopic rods inside, and the telescopic ends of the second spring telescopic rods are provided with filter plates for filtering impurities.

[0011] Preferably, an impeller is rotatably mounted inside the drive box, a synchronizing rod is rotatably mounted on the top of the impeller, a drive rod is rotatably mounted inside the filter box, a protrusion for squeezing the filter plate is provided on the outside of the drive rod, and synchronizing pulleys are provided on the outside of both the synchronizing rod and the drive rod, and the two synchronizing pulleys are connected by a synchronous belt drive.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. The water-absorbing sponge can absorb residual water stains on the mesh conveyor belt, preventing these residual water stains from affecting the drying efficiency of the PET sheets later. While absorbing water stains, the water-absorbing sponge will also rotate under the action of the rotating rod, thus coming into contact with the squeeze roller. The squeeze roller, together with the first spring telescopic rod, can squeeze the water-absorbing sponge, squeezing out the water stains inside the sponge, preventing the sponge from being too full to absorb water stains on the mesh conveyor belt.

[0014] 2. By using the filter box, impurities in the gas can be filtered. The synchronous pulley and synchronous belt work to drive the drive rod to rotate. At the same time, the protrusion on the outside of the drive rod will also rotate, thereby reciprocatingly squeezing the filter plate. This keeps the filter plate vibrating under the action of the second spring telescopic rod, preventing the filter plate from being blocked by impurities. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a rapid and uniform drying device used in the production and processing of PET sheets.

[0016] Figure 2 This is a schematic diagram of some components in a rapid and uniform drying device used in the production and processing of PET sheets.

[0017] Figure 3 This is a schematic diagram of the water absorption component in a rapid and uniform drying device used in the production and processing of PET sheets.

[0018] Figure 4 This is a schematic diagram of the heating component in a rapid and uniform drying device used in the production and processing of PET sheets.

[0019] Figure 5 This is a schematic diagram of the internal structure of the drive box and filter box in a rapid and uniform drying device used in the production and processing of PET sheets.

[0020] Figure 6 This is a schematic diagram of the drive rod and protrusion in a rapid and uniform drying device used in the production and processing of PET sheets.

[0021] The following are the labels in the diagram: 1. Drying seat; 2. Mesh conveyor belt; 3. Drying frame; 4. Water collection frame; 5. Air pump; 6. Drive box; 7. Filter box; 8. Absorbent sponge; 9. Squeeze roller; 10. Rotating rod; 11. Mounting frame; 12. Support block; 13. Mounting block; 14. First spring telescopic rod; 15. Air supply pipe; 16. Air outlet; 17. Impeller; 18. Synchronizing rod; 19. Synchronizing pulley; 20. Synchronizing belt; 21. Heating tube; 22. Filter plate; 23. Second spring telescopic rod; 24. Drive rod; 25. Protrusion. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 6 As shown, this utility model provides:

[0024] A rapid and uniform drying device for PET sheet production and processing includes a drying base 1, a mesh conveyor belt 2 for transporting PET sheets is provided on the top of the drying base 1, a drying frame 3 for drying the PET sheets is provided on the top of the drying base 1, two air supply pipes 15 are provided inside the drying frame 3, and multiple air outlets 16 are connected to one side of each of the two air supply pipes 15. A water absorption component for absorbing water from the mesh conveyor belt 2 is provided on the top of one side of the drying base 1, and a heating component for heating the drying frame 3 is also provided on the top of the drying base 1.

[0025] By placing the PET sheet on the mesh conveyor belt 2, the PET sheet is transported to the inside of the drying frame 3. Then, the top and bottom surfaces of the PET sheet can be dried using the multiple air outlets 16 inside the drying frame 3, so that the PET sheet can be dried quickly and evenly.

[0026] like Figure 3 As shown, the water absorption assembly includes symmetrical support blocks 12 arranged on the top of the drying seat 1, a rotating rod 10 rotatably arranged between the two support blocks 12, and a water-absorbing sponge 8 that contacts the mesh conveyor belt 2 is arranged on the outside of the rotating rod 10.

[0027] The water-absorbing sponge 8 can absorb the residual water stains on the mesh conveyor belt 2, so as to avoid these residual water stains affecting the drying efficiency of the PET sheets later.

[0028] like Figure 3 As shown, an installation block 13 is provided between two support blocks 12. Multiple first spring telescopic rods 14 are provided on the top of the installation block 13. An installation frame 11 is provided at the telescopic end of the first spring telescopic rod 14. An extrusion roller 9 that rotatably contacts the water-absorbing sponge 8 is provided inside the installation frame 11. A water collection frame 4 for collecting water stains is provided on the top of the drying seat 1.

[0029] As the absorbent sponge 8 absorbs water stains, it drives the rotating rod 10 to rotate, thereby contacting the squeezing roller 9. The squeezing roller 9, in conjunction with the first spring telescopic rod 14, can squeeze the absorbent sponge 8, squeezing out the water stains inside the absorbent sponge 8.

[0030] like Figure 4As shown, the heating assembly includes an air pump 5, a drive box 6, and a filter box 7, which are installed on the top of the drying base 1. The input end of the air pump 5 is connected to the inside of the drive box 6 through a pipe. One side of the drive box 6 is connected to the inside of the filter box 7 through a pipe. The filter box 7 has multiple through holes for air intake on one side. The filter box 7 is equipped with a heating tube 21. The output end of the air pump 5 is connected to the air supply pipe 15.

[0031] The suction pump 5 can continuously transport hot air to the air supply pipe 15 inside the drying frame 3, thereby ensuring a continuous supply of hot air inside the air supply pipe 15 and ensuring the drying efficiency of the PET sheets.

[0032] like Figure 6 As shown, the filter box 7 is equipped with multiple second spring telescopic rods 23 inside, and the telescopic ends of the second spring telescopic rods 23 are equipped with filter plates 22 for filtering impurities.

[0033] The filter plate 22 inside the filter box 7 can filter impurities in the gas, preventing a large number of impurities from being adsorbed onto the surface of the PET sheet by the suction pump 5, thereby affecting the product quality of the PET sheet.

[0034] like Figure 5 and Figure 6 As shown, an impeller 17 is rotatably mounted inside the drive box 6, and a synchronizing rod 18 is rotatably mounted on the top of the impeller 17. A drive rod 24 is rotatably mounted inside the filter box 7, and a protrusion 25 for squeezing the filter plate 22 is mounted on the outside of the drive rod 24. Synchronizing wheels 19 are mounted on the outside of both the synchronizing rod 18 and the drive rod 24, and the two synchronizing wheels 19 are connected by a synchronous belt 20.

[0035] While the air pump 5 draws in air, it drives the impeller 17 to rotate. At the same time, the synchronizing rod 18 and synchronizing wheel 19 on the top of the impeller 17 also rotate. The synchronizing wheel 19 works in conjunction with the synchronizing belt 20 to drive the drive rod 24 to rotate. Meanwhile, the protrusion 25 on the outside of the drive rod 24 also rotates, thereby reciprocatingly squeezing the filter plate 22. This keeps the filter plate 22 in a state of vibration under the action of the second spring telescopic rod 23, preventing the filter plate 22 from being blocked by impurities.

[0036] Working principle: When drying the cleaned PET sheets, the PET sheets are first placed on the mesh conveyor belt 2, which transports them to the drying frame 3. Multiple air vents 16 inside the drying frame 3 then dry both the top and bottom surfaces of the PET sheets, ensuring rapid and uniform drying. As the mesh conveyor belt 2 moves, it comes into contact with the water-absorbing sponge 8, which absorbs any residual water, preventing it from affecting the subsequent drying efficiency of the PET sheets. Simultaneously, the water-absorbing sponge 8 rotates under the action of the rotating rod 10, thus contacting the squeeze roller 9. The squeeze roller 9, in conjunction with the first spring telescopic rod 14, further works to remove excess water from the sponge. The sponge 8 is squeezed to squeeze out the water stains inside the water-absorbing sponge 8, so that the water-absorbing sponge 8 is not full and cannot absorb the water stains on the mesh conveyor belt 2. At the same time, the air pump 5 can continuously transport hot air to the air pipe 15 inside the drying frame 3. Meanwhile, the filter box 7 can filter impurities in the gas. While the air pump 5 is sucking air, it drives the impeller 17 to rotate. At the same time, the synchronous rod 18 and synchronous wheel 19 on the top of the impeller 17 will also rotate. The synchronous wheel 19 works with the synchronous belt 20 to drive the drive rod 24 to rotate. At the same time, the protrusion 25 on the outside of the drive rod 24 will also rotate, thereby reciprocating to squeeze the filter plate 22. This makes the filter plate 22 vibrate under the action of the second spring telescopic rod (23), preventing the filter plate (22) from being blocked by impurities.

[0037] The above embodiments merely illustrate one or several implementation methods of a rapid and uniform drying device for PET sheet production and processing according to this utility model. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

[0038] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A fast and uniform drying device for PET sheet production processing, characterized in that, The utility model provides drying seat (1), the top of drying seat (1) is provided with the web belt conveying belt (2) for transporting PET piece, the top of drying seat (1) is provided with the drying frame (3) for drying PET piece, the inside of drying frame (3) is provided with two gas pipes (15), and the side of two gas pipes (15) is communicated with a plurality of gas outlets (16) opposite each other, the top of drying seat (1) one side is provided with the water absorption assembly for the water absorption of web belt conveying belt (2), the top of drying seat (1) is also provided with the heating assembly for heating drying frame (3). The water absorption assembly includes support blocks (12) disposed symmetrically on the top of the drying seat (1), a rotating rod (10) is rotatably disposed between the two support blocks (12), and a water absorption sponge (8) is disposed on the outside of the rotating rod (10) and in contact with the web belt conveying belt (2). A mounting block (13) is disposed between the two support blocks (12), a plurality of first spring telescopic rods (14) are disposed on the top of the mounting block (13), a mounting frame (11) is disposed on the telescopic end of the first spring telescopic rod (14), a pressing roller (9) is rotatably disposed in the inside of the mounting frame (11) and in contact with the water absorption sponge (8), and a water collection frame (4) is disposed on the top of the drying seat (1) for collecting water stains. The heating assembly includes an air suction pump (5), a drive box (6), and a filter box (7) disposed on the top of the drying seat (1), the input end of the air suction pump (5) is connected to the inside of the drive box (6) through a pipeline, one side of the drive box (6) is connected to the inside of the filter box (7) through a pipeline, a plurality of through holes for air inlet are formed on one side of the filter box (7), a heating pipe (21) is disposed in the inside of the filter box (7), and the output end of the air suction pump (5) is connected to the gas pipe (15). A impeller (17) is rotatably disposed in the inside of the drive box (6), a synchronous rod (18) is rotatably disposed on the top of the impeller (17), a drive rod (24) is rotatably disposed in the inside of the filter box (7), a protrusion (25) for pressing a filter plate (22) is disposed on the outside of the drive rod (24), synchronous wheels (19) are disposed on the outside of the synchronous rod (18) and the drive rod (24), and two synchronous wheels (19) are drivingly connected through a synchronous belt (20).

2. The rapid and uniform drying device for PET sheet production and processing according to claim 1, characterized in that, A plurality of second spring telescopic rods (23) are disposed in the inside of the filter box (7), and a filter plate (22) for filtering impurities is disposed on the telescopic end of the second spring telescopic rod (23).

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