Circulating cooling mechanism for PVB resin processing

Through the design of the circulation cooling mechanism, the problems of waste of water resources and uneven temperature during the cooling process of PVB resin are solved, uniform cooling and resource recycling are achieved, production costs are reduced, and product quality is improved.

CN223283305UActive Publication Date: 2025-08-29HUAIJI HUAIDE NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202422576692.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-24
Publication Date
2025-08-29
Estimated Expiration
2034-10-24

AI Technical Summary

Technical Problem

The traditional circulating cooling mechanism for PVB resin processing has problems of waste of water resources and uneven temperature distribution, which affects product quality and increases production costs.

Method used

The circulation cooling mechanism including a water tank, a cylinder, a conveyor sheet and a semiconductor refrigeration sheet is adopted. The water supply mechanism is sprayed with cold water, the stirring mechanism is mixed with cold water in the water tank, and the semiconductor refrigeration sheet is used to circulate the cooling water to ensure uniform cooling and resource recycling.

Benefits of technology

The uniform cooling of PVB resin is achieved, which reduces water resource waste, reduces production costs, and improves product quality and device practicality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of PVB (polyvinyl butyral) resin processing, and discloses a circulating cooling mechanism for PVB resin processing, which comprises a water tank, a temperature sensor fixed at the bottom in the water tank, a cylinder arranged at the top of the water tank, two supports fixed at two ends of the side wall of the cylinder, and a feed hopper fixed at one end of the side wall of the cylinder, a first through hole is formed in the bottom of the side wall of the cylinder, a first filter screen is fixed in the first through hole, a discharging port is fixed to the side wall of the end, away from the feeding hopper, of the cylinder, supporting plates are fixed to the two ends of the top of the water tank, and the inner side walls of the two supporting plates are rotationally connected with the same first rotating shaft. Cold water can be evenly sprayed on the surface of PVB resin, the PVB resin is evenly cooled, the quality of PVB resin processing products is improved, cooled water enters the water tank again after being filtered through the filtering mechanism and is recycled after being cooled through the cooling mechanism, waste of water resources is avoided, the processing cost is reduced, and the practicability of the device is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of PVB resin processing, in particular to a circulating cooling mechanism for PVB resin processing. Background Art

[0002] PVB resin is an important polymer material, mainly used to manufacture safety glass, coatings and adhesives. It has good transparency, excellent bonding properties and weather resistance, and is therefore widely used in construction, automobiles, electronics and other fields. During the processing of PVB resin, it needs to be melted. The temperature of the melted PVB resin is high and cannot be used directly in production. It needs to be cooled, so a circulating cooling mechanism is needed for PVB resin processing.

[0003] Traditional PVB resin processing circulating cooling mechanisms usually use cold water pouring to cool the PVB resin. However, the water temperature rises after use, and the hot water will be directly discharged and cannot be recycled, which requires a large amount of water resources to be wasted, increases production costs, and reduces the practicality of the device. Moreover, when using cold water for pouring and cooling, the PVB resins will be stacked together for cooling, which may easily cause the outer layer of resin to be directly cooled by the cold water, while the inner layer of resin is not cooled sufficiently, resulting in uneven overall temperature distribution, affecting the quality of PVB resin processed products. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a circulating cooling mechanism for PVB resin processing.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A circulating cooling mechanism for processing PVB resin comprises a water tank, a temperature sensor is fixed at the bottom of the water tank, a cylinder is arranged on the top of the water tank, two brackets are fixed at both ends of the side wall of the cylinder, and four brackets are fixed to the water tank, a feed hopper is fixed at one end of the side wall of the cylinder, a first through hole is opened at the bottom of the side wall of the cylinder, a first filter is fixed in the first through hole, a discharge port is fixed on the side wall of the cylinder away from the feed hopper, support plates are fixed at both ends of the top of the water tank, the inner side walls of the two support plates are rotatably connected to the same first rotating shaft, the first rotating shaft is a cavity structure, and the cylinder is sleeved on the side wall of the first rotating shaft, the outer side wall of the first rotating shaft is sleeved with a conveying sheet, and the conveying sheet is spirally arranged, a plurality of circular holes are opened on the side wall of the first rotating shaft at equal distances, a first motor is fixed on the outer side wall of one of the support plates, and the output shaft of the first motor is fixed to the first rotating shaft, The device is provided with a conveying mechanism for conveying PVB resin, a filtering mechanism is provided on the top of the water tank, a cooling mechanism for cooling water is provided on the side wall of the water tank, a stirring mechanism is provided inside the water tank, and a water supply mechanism for supplying water to the first rotating shaft is provided inside the water tank. During use, the device supplies water to the inside of the first rotating shaft through the water supply mechanism and sprays it through multiple circular holes to cool the PVB resin. At the same time, the first motor is driven to drive the first rotating shaft to rotate, and then the conveying sheet is driven to rotate to transport the PVB resin to avoid accumulation. At the same time, when the first rotating shaft rotates, cold water can be evenly sprayed on the surface of the PVB resin to cool it evenly, thereby improving the quality of the PVB resin processed products. The cooled water is filtered through the filtering mechanism and then re-enters the water tank. After being cooled by the cooling mechanism, it is recycled, avoiding waste of water resources, reducing processing costs, and improving the practicality of the device.

[0007] As a further solution of the present invention, the filtering mechanism includes a second filter screen, a second through hole is opened on the top of the water tank, and the second through hole is located directly below the first filter screen. The second filter screen is fixed on the inner wall of the second through hole. After use, the water is filtered through the first filter screen and the second filter screen, and then enters the water tank for recycling, avoiding waste of water resources.

[0008] As a further solution of the present invention, the cooling mechanism includes a semiconductor refrigeration plate, a mounting hole is opened on the side wall of the water tank, the semiconductor refrigeration plate is fixed in the mounting hole, a plurality of second fins are fixed at equal distances on the cold end of the semiconductor refrigeration plate, and a plurality of first fins are fixed at equal distances on the hot end of the semiconductor refrigeration plate, a guide plate is fixed at an angle on the inner side wall of the water tank, and the lowest end of the guide plate is located above the plurality of second fins. When the semiconductor refrigeration plate is working, the temperature of its cold end decreases, and then the surface temperature of the plurality of first fins decreases. When water flows to the surface of the plurality of first fins through the guide plate, it can be cooled and prepared for the next use.

[0009] As a further solution of the present invention, the stirring mechanism includes a second motor, which is fixed on the outer wall of the water tank. The inner wall of the water tank is rotatably connected to two second rotating shafts, and one end of the two second rotating shafts passes through the outer wall of the water tank. One of the second rotating shafts and the output shaft of the second motor is fixed, and one end of the two second rotating shafts is respectively sleeved with a first synchronous wheel and a second synchronous wheel. The outer wall of the water tank is provided with a synchronous belt, and the two ends of the synchronous belt are respectively sleeved on the side walls of the first synchronous wheel and the second synchronous wheel. A plurality of stirring rods are equidistantly fixed on the side walls of the two second rotating shafts. The second motor is driven to drive one of the second rotating shafts to rotate, and cooperates with the first synchronous wheel, the synchronous belt and the second synchronous wheel to drive the other second rotating shaft to rotate, thereby driving the multiple stirring rods to rotate, so as to quickly mix the cooled water and the cold water in the water tank.

[0010] As a further solution of the present invention, the water supply mechanism includes a water pump, which is fixed to the bottom of the water tank. A connecting pipe is fixed to the water outlet end of the water pump, and one end of the connecting pipe is rotatably connected to the first rotating shaft. The water pump is driven to draw cold water in the water tank into the interior of the first rotating shaft through the connecting pipe and spray it out through multiple circular holes. The cold water can be evenly sprayed on the surface of the PVB resin, so that the PVB resin is evenly cooled, thereby improving the quality of PVB resin processed products.

[0011] As a further solution of the present invention, a material guide trough is fixed at one end of the top of the water tank. The top of the material guide trough is an inclined structure, and the material guide trough is located below the discharge port. The cooled PVB resin is transported to the discharge port through the conveying sheet, and falls to the top of the material guide trough and slides to be collected for convenient use.

[0012] The beneficial effects of the utility model are:

[0013] 1. During use of this device, PVB resin is placed into the cylinder through the feed hopper for cooling. During cooling, water is supplied to the first rotating shaft through the water supply mechanism and sprayed out through multiple circular holes to cool the PVB resin. At the same time, the first motor is driven to rotate the first rotating shaft, which in turn drives the conveying sheet to rotate, and the PVB resin can be continuously transported to the discharge port for collection to avoid accumulation. At the same time, the rotation of the first rotating shaft can evenly spray cold water on the surface of the PVB resin, so that the PVB resin is evenly cooled, thereby improving the quality of PVB resin processed products.

[0014] 2. The cooled water is filtered by the filtering mechanism and then re-enters the water tank. It is cooled by the cooling mechanism and then recycled, thus avoiding the waste of water resources, reducing processing costs, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic structural diagram of a circulating cooling mechanism for PVB resin processing proposed in the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of a water tank of a circulating cooling mechanism for PVB resin processing proposed in the present invention;

[0017] Figure 3 This is a schematic diagram of a cylinder and a first filter screen of a circulating cooling mechanism for PVB resin processing proposed in the present invention;

[0018] Figure 4 This is a schematic cross-sectional view of a cylindrical circulating cooling mechanism for PVB resin processing proposed in the present invention;

[0019] Figure 5 This is an exploded schematic diagram of the first rotating shaft and conveying sheet of a circulating cooling mechanism for PVB resin processing proposed by the utility model.

[0020] In the figure: 1. Water tank; 2. Cylinder; 3. Feed hopper; 4. Material guide trough; 5. Bracket; 6. Support plate; 7. First motor; 8. Semiconductor refrigeration plate; 9. First fin; 10. First synchronous wheel; 11. Synchronous belt; 12. Second synchronous wheel; 13. Second filter; 14. Guide plate; 15. Water pump; 16. Connecting pipe; 17. Second rotating shaft; 18. Temperature sensor; 19. Stirring rod; 20. Second motor; 21. Second fin; 22. Discharge port; 23. First filter; 24. First rotating shaft; 25. Conveyor sheet; 26. Round hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1 - Figure 5A circulating cooling mechanism for PVB resin processing includes a water tank 1, a temperature sensor 18 is fixed to the bottom of the water tank 1, a cylinder 2 is arranged on the top of the water tank 1, two brackets 5 are fixed to both ends of the side wall of the cylinder 2, and the four brackets 5 are fixed to the water tank 1, a feed hopper 3 is fixed to one end of the side wall of the cylinder 2, a first through hole is opened at the bottom of the side wall of the cylinder 2, a first filter screen 23 is fixed in the first through hole, a discharge port 22 is fixed to the side wall of the cylinder 2 away from the feed hopper 3, support plates 6 are fixed to both ends of the top of the water tank 1, the inner side walls of the two support plates 6 are rotatably connected to the same first rotating shaft 24, the first rotating shaft 24 is a cavity structure, and the cylinder 2 is sleeved on the side wall of the first rotating shaft 24, the outer side wall of the first rotating shaft 24 is sleeved with a conveying sheet 25, and the conveying sheet 25 is spirally arranged, and a plurality of circular holes 26 are opened in the side wall of the first rotating shaft 24 at equal distances, a first motor 7 is fixed to the outer side wall of one of the support plates 6, and the output shaft of the first motor 7 is fixed to the first rotating shaft 24. A conveying mechanism for conveying PVB resin is provided inside the cylinder 2, a filtering mechanism is provided on the top of the water tank 1, a cooling mechanism for cooling water is provided on the side wall of the water tank 1, a stirring mechanism is provided inside the water tank 1, and a water supply mechanism for supplying water to the first rotating shaft 24 is provided inside the water tank 1. During use of this device, water is supplied to the inside of the first rotating shaft 24 by the water supply mechanism and sprayed out through multiple circular holes 26 to cool the PVB resin. At the same time, the first motor 7 is driven to drive the first rotating shaft 24 to rotate, and then the conveying sheet 25 is driven to rotate to transport the PVB resin to avoid accumulation. At the same time, when the first rotating shaft 24 rotates, cold water can be evenly sprayed on the surface of the PVB resin to cool it evenly, thereby improving the quality of the PVB resin processed products. The cooled water is filtered through the filtering mechanism and then re-enters the water tank 1. After being cooled by the cooling mechanism, it is recycled, avoiding waste of water resources, reducing processing costs, and improving the practicality of the device.

[0023] Reference Figure 1 and Figure 2 In a preferred embodiment, the filtering mechanism includes a second filter 13, a second through hole is opened on the top of the water tank 1, and the second through hole is located directly below the first filter 23, and the second filter 13 is fixed on the inner wall of the second through hole. After being used, the water is filtered through the first filter 23 and the second filter 13, and then enters the water tank 1 to be recycled, thereby avoiding waste of water resources.

[0024] Reference Figure 1 and Figure 2In a preferred embodiment, the cooling mechanism includes a semiconductor refrigeration plate 8, a mounting hole is opened on the side wall of the water tank 1, and the semiconductor refrigeration plate 8 is fixed in the mounting hole. A plurality of second fins 21 are fixed at equal distances on the cold end of the semiconductor refrigeration plate 8, and a plurality of first fins 9 are fixed at equal distances on the hot end of the semiconductor refrigeration plate 8. A guide plate 14 is fixed at an angle on the inner wall of the water tank 1, and the bottom end of the guide plate 14 is located above the plurality of second fins 21. When the semiconductor refrigeration plate 8 is working, the temperature of its cold end decreases, and then the surface temperature of the plurality of first fins 9 decreases. When water flows to the surface of the plurality of first fins 9 through the guide plate 14, it can be cooled and prepared for the next use.

[0025] Reference Figure 1 and Figure 2 In a preferred embodiment, the stirring mechanism includes a second motor 20, which is fixed to the outer wall of the water tank 1. The inner wall of the water tank 1 is rotatably connected to two second rotating shafts 17, and one end of the two second rotating shafts 17 passes through the outer wall of the water tank 1, one of the second rotating shafts 17 and the output shaft of the second motor 20 are fixed, and one end of the two second rotating shafts 17 is respectively sleeved with a first synchronous wheel 10 and a second synchronous wheel 12, a synchronous belt 11 is provided on the outer wall of the water tank 1, and the two ends of the synchronous belt 11 are respectively sleeved on the side walls of the first synchronous wheel 10 and the second synchronous wheel 12, and a plurality of stirring rods 19 are equidistantly fixed on the side walls of the two second rotating shafts 17. The second motor 20 is driven to drive one of the second rotating shafts 17 to rotate, and the first synchronous wheel 10, the synchronous belt 11 and the second synchronous wheel 12 drive the other second rotating shaft 17 to rotate, thereby driving the plurality of stirring rods 19 to rotate, so as to quickly mix the cooled water and the cold water in the water tank 1.

[0026] Reference Figure 1 and Figure 4 In a preferred embodiment, the water supply mechanism includes a water pump 15, which is fixed to the bottom of the water tank 1. A connecting pipe 16 is fixed to the water outlet end of the water pump 15, and one end of the connecting pipe 16 is rotatably connected to the first rotating shaft 24. The water pump 15 is driven to draw cold water in the water tank 1 into the interior of the first rotating shaft 24 through the connecting pipe 16 and spray it out through multiple circular holes 26. The cold water can be evenly sprayed on the surface of the PVB resin, so that the PVB resin is evenly cooled, thereby improving the quality of PVB resin processed products.

[0027] Reference Figure 1 In a preferred embodiment, a material guide trough 4 is fixed at one end of the top of the water tank 1. The top of the material guide trough 4 is an inclined structure, and the material guide trough 4 is located below the discharge port 22. The cooled PVB resin is transported to the discharge port 22 through the conveying sheet 25, and falls to the top of the material guide trough 4 and slides down to be collected for convenient use.

[0028] Working principle of this embodiment: During the use of this device, a large amount of cold water is pre-injected into the water tank 1, and a collection container is placed at the lowest end of the guide trough 4. The PVB resin that needs to be cooled is fed into the cylinder 2 through the feed hopper 3 for cooling. During cooling, the power switch of the first motor 7 is turned on, and the first motor 7 is driven to drive the first rotating shaft 24 to rotate, thereby driving the conveying sheet 25 to rotate, and the PVB resin is gradually conveyed to avoid accumulation. At the same time, the power switch of the water pump 15 is turned on, and the water pump 15 is driven to pass the cold water in the water tank 1 through the cylinder 2. The cold water is drawn into the first rotating shaft 24 through the connecting pipe 16 and sprayed out through the multiple circular holes 26. Since the first rotating shaft 24 is in a rotating state, the cold water can be evenly sprayed on the surface of the PVB resin, so that the PVB resin is evenly cooled, thereby improving the quality of the PVB resin processed products. The cooled PVB resin is transported to the discharge port 22, falls to the top of the guide trough 4, slides into the collection container and is collected. The temperature of the cold water rises after use, and the hot water is filtered through the first filter 23 and the second filter 13, enters the water tank 1, and flows to the multiple second fins in conjunction with the guide plate 14. The surface of the sheet 21, at this time, the power switch of the semiconductor refrigeration sheet 8 is turned on, so that the cold end temperature of the semiconductor refrigeration sheet 8 is reduced, and then the surface temperature of the multiple first fins 9 is reduced. When the water flows to the surface of the multiple first fins 9 through the guide plate 14, it is cooled. At the same time, the power switch of the second motor 20 is turned on, driving the second motor 20 to drive one of the second rotating shafts 17 to rotate, and cooperate with the first synchronous wheel 10, the synchronous belt 11 and the second synchronous wheel 12 to drive the other second rotating shaft 17 to rotate, and then drive the multiple stirring rods 19 to rotate, mixing the cooled water with the cold water in the water tank 1, so that the water can be recycled, avoiding waste of water resources, reducing processing costs, and improving the practicality of the device. Since a temperature sensor 18 is installed at the bottom of the water tank 1, the temperature sensor 18 is connected to a controller, and the working state of the semiconductor refrigeration sheet 8 is adjusted according to the real-time data of the temperature sensor 18, the current of the semiconductor refrigeration sheet 8 can be controlled by a PWM pulse width modulation signal, thereby adjusting its refrigeration capacity, and controlling the cold water inside the water tank 1 within a certain range to avoid the water temperature being too high or too low, affecting the cooling effect of the PVB resin.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A circulating cooling mechanism for PVB resin processing, comprising a water tank (1), characterized in that: A temperature sensor (18) is fixed to the bottom of the water tank (1), a cylinder (2) is provided on the top of the water tank (1), two brackets (5) are fixed to both ends of the side wall of the cylinder (2), and the four brackets (5) are fixed to the water tank (1), a feed hopper (3) is fixed to one end of the side wall of the cylinder (2), a first through hole is opened at the bottom of the side wall of the cylinder (2), a first filter (23) is fixed in the first through hole, a discharge port (22) is fixed to the side wall of the cylinder (2) away from the feed hopper (3), support plates (6) are fixed to both ends of the top of the water tank (1), the inner side walls of the two support plates (6) are rotatably connected to the same first rotating shaft (24), the first rotating shaft (24) is a cavity structure, and the cylinder (2 ) is sleeved on the side wall of the first rotating shaft (24), the outer wall of the first rotating shaft (24) is sleeved with a conveying sheet (25), and the conveying sheet (25) is spirally arranged, and the side wall of the first rotating shaft (24) is provided with a plurality of circular holes (26) at equal distances, one of the outer walls of the support plates (6) is fixed with a first motor (7), and the output shaft of the first motor (7) is fixed to the first rotating shaft (24), a conveying mechanism for conveying PVB resin is provided inside the cylinder (2), a filtering mechanism is provided on the top of the water tank (1), a cooling mechanism for cooling water is provided on the side wall of the water tank (1), a stirring mechanism is provided inside the water tank (1), and a water supply mechanism for supplying water to the first rotating shaft (24) is provided inside the water tank (1).

2. The circulating cooling mechanism for PVB resin processing according to claim 1, characterized in that: The filtering mechanism comprises a second filter screen (13), a second through hole is provided on the top of the water tank (1), and the second through hole is located directly below the first filter screen (23), and the second filter screen (13) is fixed on the inner side wall of the second through hole.

3. The circulating cooling mechanism for PVB resin processing according to claim 1, characterized in that: The cooling mechanism comprises a semiconductor refrigeration plate (8); a mounting hole is provided on a side wall of the water tank (1); the semiconductor refrigeration plate (8) is fixed in the mounting hole; a plurality of second fins (21) are fixed at equal distances on the cold end of the semiconductor refrigeration plate (8); a plurality of first fins (9) are fixed at equal distances on the hot end of the semiconductor refrigeration plate (8); a guide plate (14) is fixed obliquely on the inner side wall of the water tank (1), and the lowest end of the guide plate (14) is located above the plurality of second fins (21).

4. The circulating cooling mechanism for PVB resin processing according to claim 1, characterized in that: The stirring mechanism comprises a second motor (20), the second motor (20) is fixed on the outer wall of the water tank (1), the inner wall of the water tank (1) is rotatably connected to two second rotating shafts (17), and one end of each of the two second rotating shafts (17) passes through the outer wall of the water tank (1), one of the second rotating shafts (17) is fixed to the output shaft of the second motor (20), one end of each of the two second rotating shafts (17) is respectively sleeved with a first synchronous wheel (10) and a second synchronous wheel (12), the outer wall of the water tank (1) is provided with a synchronous belt (11), and the two ends of the synchronous belt (11) are respectively sleeved on the side walls of the first synchronous wheel (10) and the second synchronous wheel (12), and a plurality of stirring rods (19) are fixed to the side walls of the two second rotating shafts (17) at equal distances.

5. The circulating cooling mechanism for PVB resin processing according to claim 1, characterized in that: The water supply mechanism comprises a water pump (15), the water pump (15) is fixed to the bottom of the water tank (1), a connecting pipe (16) is fixed to the water outlet end of the water pump (15), and one end of the connecting pipe (16) is rotatably connected to the first rotating shaft (24).

6. The circulating cooling mechanism for PVB resin processing according to claim 1, characterized in that: A material guide trough (4) is fixed at one end of the top of the water tank (1), the top of the material guide trough (4) is an inclined structure, and the material guide trough (4) is located below the discharge port (22).