A cooling device for the preparation of polyethylene diaphragms

Abstract

This utility model discloses a cooling device for the preparation of polyethylene diaphragms, relating to the technical field of cooling devices. It includes a base, with a U-shaped seat fixedly connected to the top of the base. Multiple lower cooling rollers and an upper cooling roller are rotatably connected between the two ends of the U-shaped seat. Drive chambers are fixedly connected to both ends of the side walls of the U-shaped seat, and drainage connection chambers are fixedly connected to the side walls of both drive chambers. Water inlet connection chambers are fixedly connected to both ends of the other side wall of the U-shaped seat. The base provided by this utility model achieves uniform cooling and temperature reduction while simultaneously drying the membrane, thus solving the problems of large temperature differences between the upper and lower surfaces and localized areas of the polyethylene diaphragm caused by existing cooling devices for polyethylene diaphragm preparation, uneven cooling affecting quality, and the need for additional drying of residual surface moisture, which increases costs and reduces efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, and specifically to a cooling device for the preparation of polyethylene diaphragms. Background Technology

[0002] Polyethylene barrier film is made of polyethylene material through a special process. It has certain barrier properties and can effectively block the penetration of substances such as moisture and oxygen. It usually has a multi-layer structure, which combines material layers with different functions through extrusion, lamination and other processes to meet specific packaging requirements.

[0003] According to the search results, the publication number is CN120096003A, and the title is: "A Polyethylene Barrier Film Production Device". The device includes a cooling water tank, and multiple No. 1 guide rollers are equidistantly rotatably connected to the inner side of the cooling water tank. The beneficial effects of this invention are: pre-cooling the polyethylene barrier film conveyed on the cooling rollers, further cooling it with coolant, and cooling the polyethylene barrier film by blowing cold air through the blowers at the bottom of the fixed air box.

[0004] The above technical solution has the following shortcomings;

[0005] In the actual use of the above scheme, when cooling the polyethylene diaphragm by immersion in a water tank, the diaphragm is completely submerged in the cooling water. Due to the uneven distribution of water flow within the tank, differences in heat exchange efficiency between the upper and lower surfaces of the diaphragm and different areas with the cooling water can easily occur, resulting in significant temperature differences between the upper and lower surfaces. Furthermore, local areas are prone to overcooling or incomplete cooling, affecting the crystallization uniformity and mechanical properties of the diaphragm, making it difficult to meet the requirements for preparing high-quality polyethylene diaphragms. After immersion cooling in the water tank, a large amount of moisture remains on the surface of the diaphragm. To avoid the moisture adversely affecting subsequent processing steps, a dedicated drying process is required to dry the diaphragm. This not only increases equipment investment costs and production energy consumption but also extends the production cycle, reduces production efficiency, and is not conducive to continuous industrial production. Utility Model Content

[0006] In view of the problems existing in the cooling device for the preparation of polyethylene diaphragms, the present invention is proposed.

[0007] Therefore, the purpose of this utility model is to provide a cooling device for the preparation of polyethylene diaphragms, which solves the problems of large temperature differences between the upper and lower surfaces and local areas of polyethylene diaphragms caused by the use of existing cooling devices for the preparation of polyethylene diaphragms, uneven cooling affecting quality, and the need for additional drying of residual moisture on the surface, which increases costs and reduces efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A cooling device for preparing polyethylene diaphragms includes a base, a U-shaped seat fixedly connected to the top of the base, a plurality of lower cooling rollers and upper cooling rollers rotatably connected between the two ends of the U-shaped seat, a drive chamber fixedly connected to both ends of the side wall of the U-shaped seat, a drain connection chamber fixedly connected to the side wall of each of the two drive chambers, a water inlet connection chamber fixedly connected to both ends of the other side wall of the U-shaped seat, and a negative pressure connection chamber and an air supply connection chamber fixedly connected to the side wall of each of the two water inlet connection chambers, respectively.

[0010] Three negative pressure adsorption rollers are fixedly connected between the bottom two ends of the U-shaped base, and three cooling air spray plates are fixedly connected between the top two ends of the U-shaped base. A first sealing rotating sleeve is fixedly connected to the inner side wall of the drainage connection chamber, and a second sealing rotating sleeve is fixedly connected to the inner side wall of the water inlet connection chamber. One end of the lower cooling roller and the upper cooling roller are rotatably connected to the corresponding first sealing rotating sleeve, and the other end of the lower cooling roller and the upper cooling roller are rotatably connected to the corresponding second sealing rotating sleeve. The drive chambers at both ends are respectively provided with drive mechanisms fixedly connected to each lower cooling roller, upper cooling roller, and negative pressure adsorption roller. A power supply mechanism is provided in the cavity of the base. Multiple third sealing rotating sleeves are fixedly connected to the inner side wall of the negative pressure connection chamber through openings. One end of each negative pressure adsorption roller passes through the side wall of the negative pressure connection chamber and is rotatably connected to the corresponding third sealing rotating sleeve.

[0011] Preferably, the driving mechanism includes a first gear, a second gear, a drive motor, a drive gear, a tensioning gear device, a first drive tooth chain, and a second drive tooth chain. One end of each of the lower and upper cooling rollers passes through the corresponding drive chamber, and the first gear is fixedly connected to the tube wall. One end of each of the negative pressure adsorption rollers passes through the corresponding drive chamber, and the second gear is fixedly connected to the tube wall. The side walls of the drive chambers at both ends are fixedly connected to drive motors, one end of each drive motor passes through the corresponding drive chamber side wall, and a drive gear is fixedly connected to each motor. The side walls of the drive chambers at both ends are fixedly connected to tensioning gear devices. The first drive tooth chain and the second drive tooth chain are meshed between the tensioning gear devices and the drive gears, respectively. The first drive tooth chain meshes with the corresponding first gear, and the second drive tooth chain meshes with the corresponding first and second gears.

[0012] Preferably, the power supply mechanism includes a cooling water supply device, a vacuum generator, and a cooling air generator. The cooling water supply device, the vacuum generator, and the cooling air generator are fixedly connected from left to right in the cavity of the base. The two output pipe ends of the cooling water supply device are fixedly connected to the input ends of the water inlet connection chambers at both ends, respectively. The output pipe end of the vacuum generator is fixedly connected to the input end of the negative pressure connection chamber, and the output pipe end of the cooling air generator is fixedly connected to the input end of the air supply connection chamber.

[0013] Preferably, each of the negative pressure adsorption rollers is a hollow roller body, and the roller wall has multiple adsorption holes.

[0014] Preferably, each of the cooling air spray plates is a hollow plate with an arc-shaped bottom surface, and the arc-shaped surface has multiple air outlets.

[0015] Furthermore, each of the first gear, second gear, drive gear, tensioning gear device, first drive gear chain and second drive gear chain has a diamond film coating on its surface.

[0016] Preferably, the output ends of the drainage connection chambers at both ends are fixedly connected to discharge connection pipe ends, the negative pressure adsorption roller corresponds to the lower cooling roller, the cooling air spray plate corresponds to the upper cooling roller, and the negative pressure adsorption roller corresponds to the cooling air spray plate.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. This utility model utilizes the combination of a lower cooling roller and an upper cooling roller to achieve double-sided roll cooling. The arc-shaped surface of the cooling spray plate and multiple air outlets spray uniform cooling air, which works in conjunction with the roll cooling to reduce the temperature difference between the upper and lower surfaces of the diaphragm and in local areas, thus solving the problem of uneven cooling affecting quality.

[0019] 2. This utility model utilizes a vacuum generating device to fix the diaphragm with a negative pressure adsorption roller, preventing it from moving during air cooling, improving cooling stability, reducing production costs, and increasing production efficiency.

[0020] 3. This utility model utilizes the diamond film coating on the surfaces of the first gear, second gear, and other components of the drive mechanism to reduce transmission wear and extend service life. The tensioning gear device ensures the tension of the toothed chain, the drive motor drives each roller to operate synchronously, and the cooling medium circulation system ensures stable power supply and guarantees continuous and stable operation of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a front sectional view of the present invention;

[0024] Figure 3 This is a top sectional view of the present invention;

[0025] Figure 4 This is a top view of the second cross-sectional view of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base; 2. U-shaped seat; 3. Lower cooling roller; 4. Upper cooling roller; 5. Drive chamber; 6. Drainage connection chamber; 7. Water inlet connection chamber; 8. Negative pressure connection chamber; 9. Air supply connection chamber; 10. Negative pressure adsorption roller; 11. Cooling spray plate; 12. First sealing rotating sleeve; 13. Second sealing rotating sleeve; 14. Third sealing rotating sleeve; 15. First gear; 16. Second gear; 17. Drive motor; 18. Drive gear; 19. Tensioning gear device; 20. First drive tooth chain; 21. Second drive tooth chain; 22. Cooling water supply device; 23. Vacuum generator; 24. Cooling air generator; 25. Adsorption hole; 26. Air outlet; 27. Discharge connection pipe end. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model discloses a cooling device for the preparation of polyethylene diaphragms.

[0030] This utility model provides, for example Figure 1-4 A cooling device for preparing polyethylene diaphragms is shown, comprising a base 1, a U-shaped seat 2 fixedly connected to the top of the base 1, a plurality of lower cooling rollers 3 and upper cooling rollers 4 rotatably connected between the two ends of the U-shaped seat 2, a drive chamber 5 fixedly connected to both ends of the side wall of the U-shaped seat 2, a drain connection chamber 6 fixedly connected to the side wall of both ends of the drive chamber 5, a water inlet connection chamber 7 fixedly connected to both ends of the other side wall of the U-shaped seat 2, and a negative pressure connection chamber 8 and an air supply connection chamber 9 fixedly connected to the side wall of both ends of the water inlet connection chamber 7, respectively.

[0031] Three negative pressure adsorption rollers 10 are fixedly connected between the bottom two ends of the U-shaped seat 2, and three cooling air spray plates 11 are fixedly connected between the top two ends of the U-shaped seat 2. A first sealing rotating sleeve 12 is fixedly connected to the inner side wall of the drainage connection chamber 6, and a second sealing rotating sleeve 13 is fixedly connected to the inner side wall of the water inlet connection chamber 7. One end of the lower cooling roller 3 and the upper cooling roller 4 are rotatably connected to the corresponding first sealing rotating sleeve 12, and the other end of the lower cooling roller 3 and the upper cooling roller 4 are rotatably connected to the corresponding second sealing rotating sleeve 13. The drive chambers 5 at both ends are equipped with drive mechanisms fixedly connected to each lower cooling roller 3, upper cooling roller 4, and negative pressure adsorption roller 10. The base 1 has a power supply mechanism inside its cavity. Multiple third sealing rotating sleeves 14 are fixedly connected to the inner sidewall of the negative pressure connecting chamber 8 through openings. One end of each negative pressure adsorption roller 10 passes through the sidewall of the negative pressure connecting chamber 8 and is rotatably connected to the corresponding third sealing rotating sleeve 14. A U-shaped seat 2 provides an installation base for the lower cooling roller 3 and upper cooling roller 4. Multiple lower cooling rollers 3 and upper cooling rollers 4... The cooling roller 4 performs double-sided roller cooling on the polyethylene diaphragm, ensuring uniform stress on the diaphragm. The drive chamber 5 protects the internal drive components. The drainage connection chamber 6 and the water inlet connection chamber 7 enable the circulation of the cooling medium. The negative pressure connection chamber 8 provides a vacuum environment for negative pressure adsorption. The air supply connection chamber 9 delivers cooling air to improve the cooling effect. The negative pressure adsorption roller 10 adsorbs the surface of the polyethylene diaphragm and fixes the membrane during cooling air blowing. The cooling air spray plate 11 sprays cooling air from above, working with the lower cooling roller 3 and the upper cooling roller 4 to achieve multi-dimensional cooling. The first, second, and third sealing rotating sleeves ensure the sealing of the cooling medium and the negative pressure environment without affecting the rotation of the rollers. The drive mechanism drives the rollers to operate synchronously, and the power supply mechanism provides the cooling medium and negative pressure power. This solves the problems of large temperature differences and uneven cooling on the upper and lower surfaces of the polyethylene diaphragm and the need for additional drying of residual moisture on the surface, which affect the quality and reduce efficiency of existing cooling devices used for polyethylene diaphragm preparation.

[0032] To drive the rollers to operate synchronously and ensure continuous cooling, such as Figure 3 and 4As shown, the drive mechanism includes a first gear 15, a second gear 16, a drive motor 17, a drive gear 18, a tension gear device 19, a first drive tooth chain 20, and a second drive tooth chain 21. One end of each lower cooling roller 3 and upper cooling roller 4 passes through the corresponding drive chamber 5, and the first gear 15 is fixedly connected to the tube wall. One end of each negative pressure adsorption roller 10 passes through the corresponding drive chamber 5, and the second gear 16 is fixedly connected to the tube wall. Drive motors 17 are fixedly connected to the side walls of both drive chambers 5, and one end of each drive motor 17 passes through the corresponding drive chamber 5 side wall and is fixedly connected to the drive gear 18. Tension gears are fixedly connected to the side walls of both drive chambers 5. The device 19 has a first drive tooth chain 20 and a second drive tooth chain 21 meshing between the tensioning gear device 19 at both ends and the drive gear 18. The first drive tooth chain 20 meshes with the corresponding first gear 15, and the second drive tooth chain 21 meshes with the corresponding first gear 15 and second gear 16. The drive motor 17 drives the first and second drive tooth chains through the drive gear 18, which in turn drives the lower cooling roller 3, the upper cooling roller 4, and the negative pressure adsorption roller 10 to rotate synchronously through the first gear 15 and the second gear 16. The tensioning gear device 19 ensures the tension of the tooth chains, ensures stable transmission, and achieves continuous and stable cooling of the polyethylene diaphragm.

[0033] To provide the cooling medium and negative pressure, and to ensure the cooling effect, such as Figure 1 and 2 The power supply mechanism includes a cooling water supply device 22, a vacuum generator 23, and a cooling air generator 24. From left to right, the cooling water supply device 22, vacuum generator 23, and cooling air generator 24 are fixedly connected inside the cavity of the base 1. The two output pipes of the cooling water supply device 22 are fixedly connected to the input ends of the water inlet connection chambers 7 at both ends, respectively. The output pipe of the vacuum generator 23 is fixedly connected to the input end of the negative pressure connection chamber 8, and the output pipe of the cooling air generator 24 is fixedly connected to the input end of the air supply connection chamber 9. The cooling water supply device 22 provides circulating cooling water, which enters the lower cooling roller 3 and upper cooling roller 4 through the water inlet connection chamber 7 to achieve roller cooling. The vacuum generator 23, through the negative pressure connection chamber 8, generates adsorption force on the negative pressure adsorption roller 10, fixing the adsorption diaphragm surface to prevent movement during air cooling. The cooling air generator 24 generates cooling air, which is delivered to the cooling spray plate 11 through the air supply connection chamber 9. The multi-media synergistic effect improves cooling efficiency.

[0034] To effectively absorb residual moisture on the surface of the polyethylene diaphragm and reduce the drying process, such as Figure 2As shown, each negative pressure adsorption roller 10 is a hollow roller body, and the roller wall has multiple adsorption holes 25. The hollow roller body facilitates the conduction of negative pressure, and the multiple adsorption holes 25 make the adsorption force evenly distributed on the diaphragm surface. During the diaphragm conveying process, residual moisture is quickly adsorbed, eliminating the need for additional drying steps, reducing production costs, and improving production efficiency.

[0035] To ensure uniform cooling of the polyethylene diaphragm by blowing air from above, thus improving cooling uniformity, such as... Figure 2 As shown, each cooling spray plate 11 is a hollow plate with an arc-shaped bottom surface, and the arc-shaped surface has multiple air outlets 26. The arc-shaped surface design allows the cooling air to fit the diaphragm surface, and the multiple air outlets 26 ensure that the cooling air is sprayed out evenly. In conjunction with the rolling cooling of the lower cooling roller 3 and the upper cooling roller 4, the temperature difference between the upper and lower surfaces of the diaphragm and the local temperature difference is reduced, the cooling uniformity is improved, and the diaphragm quality is guaranteed.

[0036] To improve the wear resistance and service life of drive mechanism components, such as Figure 3 and 4 As shown, each of the first gear 15, the second gear 16, the drive gear 18, the tensioning gear device 19, the first drive tooth chain 20, and the second drive tooth chain 21 has a diamond film coating on its surface. The diamond film coating has extremely high hardness and wear resistance, which can reduce the wear of gears and tooth chains during transmission, extend the service life of the drive mechanism, and ensure transmission stability.

[0037] To achieve proper circulation of the cooling medium and coordination of the positions of various components, and to improve cooling efficiency, such as... Figure 2-4 As shown, the output ends of the drainage connection chambers 6 at both ends are fixedly connected to the discharge connection pipe ends 27. The negative pressure adsorption roller 10 corresponds to the lower cooling roller 3, the cooling air spray plate 11 corresponds to the upper cooling roller 4, and the negative pressure adsorption roller 10 corresponds to the cooling air spray plate 11. The discharge connection pipe ends 27 facilitate the export and recycling of used cooling water. The corresponding positions of each component ensure that the diaphragm undergoes cooling, water adsorption, and re-cooling processes in sequence during the conveying process, forming a continuous cooling process and improving the overall cooling effect.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling device for the production of polyethylene separators, comprising a base (1), characterized in that, A U-shaped seat (2) is fixedly connected to the top of the base (1). Multiple lower cooling rollers (3) and upper cooling rollers (4) are rotatably connected between the two ends of the U-shaped seat (2). A drive chamber (5) is fixedly connected to both ends of the side wall of the U-shaped seat (2). A drain connection chamber (6) is fixedly connected to the side wall of the drive chamber (5) at both ends. A water inlet connection chamber (7) is fixedly connected to both ends of the other side wall of the U-shaped seat (2). A negative pressure connection chamber (8) and an air supply connection chamber (9) are fixedly connected to the side wall of the water inlet connection chamber (7) at both ends, respectively. Three negative pressure adsorption rollers (10) are fixedly connected between the bottom two ends of the U-shaped seat (2), and three cooling air spray plates (11) are fixedly connected between the top two ends of the U-shaped seat (2). The inner side wall of the drainage connection chamber (6) is fixedly connected to a first sealing rotating sleeve (12), and the inner side wall of the water inlet connection chamber (7) is fixedly connected to a second sealing rotating sleeve (13). One end of the lower cooling roller (3) and the upper cooling roller (4) are rotatably connected to the corresponding first sealing rotating sleeve (12). The other end of the ) is rotatably connected to the corresponding second sealing rotating sleeve (13). The cavity of the drive chamber (5) at both ends is provided with a drive mechanism that is fixedly connected to each lower cooling roller (3), upper cooling roller (4) and negative pressure adsorption roller (10). The cavity of the base (1) is provided with a power supply mechanism. The inner side wall of the negative pressure connecting chamber (8) is fixedly connected with a plurality of third sealing rotating sleeves (14) through an opening. One end of each negative pressure adsorption roller (10) passes through the side wall of the negative pressure connecting chamber (8) and is rotatably connected to the corresponding third sealing rotating sleeve (14).

2. A cooling device for the production of polyethylene separators according to claim 1, characterized in that, The driving mechanism includes a first gear (15), a second gear (16), a drive motor (17), a drive gear (18), a tensioning gear device (19), a first drive gear chain (20), and a second drive gear chain (21). One end of each of the lower cooling rollers (3) and upper cooling rollers (4) passes through the corresponding drive chamber (5), and the first gear (15) is fixedly connected to the tube wall. One end of each of the negative pressure adsorption rollers (10) passes through the corresponding drive chamber (5), and the second gear (16) is fixedly connected to the tube wall. The side walls of the drive chambers (5) at both ends are fixedly connected to the drive motor (18). 7) One end of the drive motor (17) at both ends passes through the side wall of the corresponding drive chamber (5) and is fixedly connected to the drive gear (18). The side walls of the drive chamber (5) at both ends are fixedly connected to the tension gear device (19). The tension gear device (19) at both ends and the drive gear (18) are respectively meshed with the first drive tooth chain (20) and the second drive tooth chain (21). The first drive tooth chain (20) is meshed with the corresponding first gear (15), and the second drive tooth chain (21) is meshed with the corresponding first gear (15) and the second drive tooth chain (21) is meshed with the corresponding first gear (15) and the second gear (16).

3. The cooling device for the preparation of polyethylene separators according to claim 1, characterized in that, The power supply mechanism includes a cooling water supply device (22), a vacuum generator (23), and a cooling air generator (24). The cooling water supply device (22), the vacuum generator (23), and the cooling air generator (24) are fixedly connected from left to right in the cavity of the base (1). The two ends of the output pipe of the cooling water supply device (22) are fixedly connected to the input ends of the water inlet connection chambers (7) at both ends, respectively. The output pipe of the vacuum generator (23) is fixedly connected to the input end of the negative pressure connection chamber (8), and the output pipe of the cooling air generator (24) is fixedly connected to the input end of the air supply connection chamber (9).

4. The cooling device for the preparation of polyethylene separators according to claim 1, characterized in that, Each of the negative pressure adsorption rollers (10) is a hollow roller body, and the roller wall is provided with multiple adsorption holes (25).

5. The cooling device for the preparation of polyethylene separators according to claim 1, characterized in that, Each of the cooling air spray plates (11) is a hollow plate with an arc-shaped bottom, and the arc-shaped surface is provided with multiple air outlets (26).

6. The cooling device for the preparation of polyethylene separators according to claim 2, characterized in that, Each of the first gear (15), the second gear (16), the drive gear (18), the tensioning gear device (19), the first drive tooth chain (20), and the second drive tooth chain (21) has a diamond film coating on its surface.

7. The cooling device for the preparation of polyethylene separators according to claim 1, characterized in that, The output ends of the drainage connection chambers (6) at both ends are fixedly connected to the discharge connection pipe ends (27). The negative pressure adsorption roller (10) corresponds to the lower cooling roller (3), the cooling air spray plate (11) corresponds to the upper cooling roller (4), and the negative pressure adsorption roller (10) corresponds to the cooling air spray plate (11).

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