A cooling and drying device for granulation

Abstract

The utility model provides a kind of cooling and drying device for granulation, comprising: bearing frame, the cooling water tank is fixedly connected in the bearing frame, the both ends of the bearing frame are fixedly connected with material support, two The material support is respectively installed with feeding roller and discharging roller, and a plurality of porous baffles are arranged in the cooling water tank;Material pressing part, two The material pressing part is symmetrically installed in the material support and the cooling water tank, for the plastic strip material pressed into cooling water tank by feeding roller;The cooling and drying device for granulation is pressed into cooling water by two material pressing parts and is liquid-cooled, the spoiler is driven by water pump Circulating cooling liquid, enhance heat exchange efficiency, closed part prevents steam to escape and recovers condensation, while drying part uses fan circulating airflow, heat is transported to discharging roller from feeding roller, and plastic strip material is air-dried, realize heat reutilization, while through cooperation of water-removing brush and deflector, ensure drying effect.

Description

Technical Field

[0001] This utility model relates to the field of plastic production and processing technology, and more specifically, to a cooling and drying device for granulation. Background Technology

[0002] In the plastics industry, plastic raw materials are melted and fed into injection molding machines to produce plastic products. Different plastic products require different raw materials due to varying performance requirements. These raw materials are made by mixing various raw materials together to form strips, which are then cut into pellets using a pelletizer. Before pelletizing, the strip-shaped plastic raw materials are at a high temperature and need to be cooled by passing them through cooling water.

[0003] However, existing cooling and drying equipment generally uses static water tank cooling, which easily leads to temperature stratification of the water flow in the cooling tank, resulting in uneven cooling and affecting the quality of the plastic material. Heat exchange is only achieved through the movement of the plastic strip in the water tank, resulting in low cooling efficiency. Furthermore, steam in the water tank is easily released during cooling, affecting the working environment. At the same time, since the strip-shaped plastic raw material has water droplets on its surface after cooling, simply using hot air drying cannot achieve rapid and uniform drying of the plastic material, and the energy consumption is high, affecting processing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a cooling and drying device for granulation to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a cooling and drying device for granulation, comprising: a support frame, a cooling water tank fixedly connected inside the support frame, a material support frame fixedly connected to both ends of the support frame, a feeding roller and a discharging roller respectively installed on the two material support frames, and a plurality of perforated baffles placed inside the cooling water tank; The pressing section, two pressing sections are symmetrically installed in the material support frame and the cooling water tank, and are used to press the plastic strip material passing through the feed roller into the cooling water tank; A sealing section is installed on the support frame and the two pressing sections to shield the top of the cooling water tank; A flow-dispersing section is installed at both ends of the support frame and the cooling water tank to push the cooling water on one side of the cooling water tank to the other side; The drying section is located on both sides of the support frame and is used to extract heat from the plastic strip at the feed roller and transport it to the discharge roller.

[0006] Furthermore, the drying section includes two assembly frames symmetrically fixed on both sides of the support frame, two air collecting components fixed on the two assembly frames respectively, a first fan fixed on the outer wall of the assembly frame, two air inlet pipes and exhaust pipes with one end connected to the air inlet and air outlet of the first fan respectively, and the other end connected to the two air collecting components respectively, a guide plate and two water removal brushes fixed on one of the air collecting components; The guide plate is inclined, and one of the downward inclined ends of the guide plate extends into the cooling water tank; The guide plate, the air outlet pipe, and the two dewatering brushes are all located close to the discharge roller.

[0007] Furthermore, the gas collecting component includes a lower gas collecting box fixed on the assembly frame, an upper gas collecting box hinged to one end of the lower gas collecting box, a plurality of vent holes symmetrically and equally spaced on the lower gas collecting box and the upper gas collecting box, two gas supply holes respectively opened at one end of the lower gas collecting box and the upper gas collecting box and corresponding to each other, and two strong magnetic blocks respectively fixed at the other end of the lower gas collecting box and the upper gas collecting box and magnetically attracted to each other. The two water removal brushes are respectively fixed on the upper air collection box and the lower air collection box, and the guide plate is fixed to the bottom of the lower air collection box.

[0008] Furthermore, the turbulence section includes two liquid collection tanks fixed to the inner walls of both ends of the cooling water tank, a first water pump and a second water pump fixed to both ends of the support frame, two diversion pipes with one end connected to the liquid outlet of the first water pump and the liquid inlet of the second water pump respectively, and the other end connected to the two liquid collection tanks respectively, and a plurality of liquid passage holes equally spaced on the two liquid collection tanks. The inlet of the first water pump is connected to an external coolant supply device via a pipe, and the outlet of the second water pump is connected to an external heat exchange device via a pipe. The two liquid collection tanks are respectively arranged on the upper and lower sides of the plurality of porous baffles.

[0009] Furthermore, the enclosed part includes two side cover plates respectively disposed on the two pressing parts, an air collecting cover plate hinged to the middle of the support frame and disposed between the two side cover plates, a second fan fixed on the side wall of the support frame, and a corrugated pipe with one end connected to the air inlet end of the second fan and the other end connected to the air collecting cover plate. The outlet of the second fan is connected to an external condensation device.

[0010] Furthermore, the pressing part includes an assembly seat fixed on the outer wall of the support frame, an electric push rod fixed on the assembly seat, a connecting frame fixed on the telescopic end of the electric push rod, a pressing frame fixed on the lower surface of one of the side cover plates, and a plurality of pressing rollers equally spaced on the pressing frame; The connecting frame is fixedly connected to one of the side cover plates.

[0011] Furthermore, the pressing part also includes two guide rods symmetrically fixed on the connecting frame and slidingly engaged with the mounting base, two guide rails symmetrically fixed in the cooling water tank, and two guide wheels symmetrically rotatably mounted on the pressing frame and corresponding to the two guide rails respectively.

[0012] Compared with the prior art, the embodiments of this utility model have the following beneficial effects: 1. This granulation cooling and drying device, through a turbulence-inducing section and the cooperation of a first and second water pump, ensures a continuous supply and forced circulation of cooling water in the cooling water tank. This allows the cooling water to pass directly over the surface of the plastic strip during circulation, ensuring a cooling effect. Simultaneously, with the assistance of several perforated baffles, the water circulates while being turbulent through the gaps in the baffles, breaking down temperature stratification and improving cooling uniformity. Furthermore, the cooling water flows into the cooling water tank through the discharge roller and exits through the feed roller. While flowing in the cooling water tank, heat exchange is completed, resulting in a uniform temperature change from low to high from the discharge roller to the feed roller. This allows the plastic strip to pass through different temperature zones sequentially, with the temperature decreasing in a stepwise manner, avoiding sudden cooling and effectively improving the yield rate.

[0013] 2. This granulation cooling and drying device, through its drying section, transfers the heat emitted by the plastic strip at the feed roller to the discharge roller, forming a hot airflow. This hot airflow is evenly blown onto the upper and lower sides of the plastic strip through several vents, achieving uniform hot air drying of the plastic strip without the need for an external heating source, effectively reducing energy consumption. Simultaneously, before the plastic strip is hot-air dried, two dehydration brushes in the drying section remove moisture from the upper and lower surfaces of the plastic strip and guide it back into the cooling water tank through a guide plate, thereby ensuring the drying effect of the plastic strip, effectively reducing drying time, and ensuring the drying efficiency of the plastic strip. Attached Figure Description

[0014] Figure 1 A perspective view of the present invention is shown; Figure 2 This invention is shown in a front view from another angle. Figure 3 This invention provides a partially cross-sectional perspective view. Figure 1 ; Figure 4This invention demonstrates a partially disassembled three-dimensional representation. Figure 1 ; Figure 5 This invention provides a partially cross-sectional perspective view. Figure 2 ; Figure 6 This invention demonstrates a partially disassembled three-dimensional representation. Figure 2 ; Figure 7 A partial perspective view of the present invention is shown.

[0015] In the picture 1. Support frame; 2. Cooling water tank; 3. Material support frame; 4. Feed roller; 5. Discharge roller; 6. Perforated baffle; 7. Pressing section; 8. Sealing section; 9. Turbulence section; 10. Drying section; 11. Assembly frame; 12. Air collection unit; 13. First fan; 14. Air inlet pipe; 15. Exhaust pipe; 16. Water removal brush; 17. Lower air collection box; 18. Upper air collection box; 19. Vent hole; 20. Air delivery hole; 2 1. Strong magnetic block; 22. Liquid collection tank; 23. First water pump; 24. Second water pump; 25. Diverter pipe; 26. Liquid passage hole; 27. Side cover plate; 28. Gas collection cover plate; 29. ​​Second fan; 30. Corrugated pipe; 31. Assembly base; 32. Electric push rod; 33. Connecting frame; 34. Pressing frame; 35. Pressing roller; 36. Guide rod; 37. Guide rail; 38. Guide wheel; 39. Guide plate. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] like Figure 1-7 As shown, a cooling and drying device for granulation includes: a support frame 1, a cooling water tank 2 fixedly connected inside the support frame 1, and material support frames 3 fixedly connected to both ends of the support frame 1. Feeding rollers 4 and discharging rollers 5 are respectively installed on the two material support frames 3, and a plurality of perforated baffles 6 are placed inside the cooling water tank 2. Pressing section 7, two pressing sections 7 are symmetrically installed in the material support frame 3 and the cooling water tank 2, used to press the plastic strip material passing through the feed roller 4 into the cooling water tank 2; The sealing part 8 is installed on the support frame 1 and the two pressing parts 7, and is used to cover the top of the cooling water tank 2; The turbulence-dissipating part 9 is installed at both ends of the support frame 1 and the cooling water tank 2, and is used to push the cooling water on one side of the cooling water tank 2 to the other side; Drying section 10, which is disposed on both sides of the support frame 1, is used to extract heat from the plastic strip at the feed roller 4 and transport it to the discharge roller 5; In use, high-temperature plastic strips enter the cooling water tank 2 above the feed roller 4. With the cooperation of the two pressing sections 7, the plastic strips are evenly pressed into the coolant in the cooling water tank 2 by several pressing rollers 35. After cooling, the plastic strips are output from the cooling water tank 2 through the discharge roller 5. While the plastic strips move within the cooling water tank 2, the turbulence-inducing section 9 operates. The first water pump 23 injects coolant into the cooling water tank 2 near the discharge roller 5, quickly removing heat. The second... The water pump 24 draws coolant from the cooling water tank 2 near the feed roller 4 at low speed, achieving coolant circulation. With the cooperation of several perforated baffles 6, the water circulates while being turbulent through the gaps in the baffles 6, breaking up temperature stratification and improving cooling uniformity. The cooling water enters the cooling water tank 2 through the discharge roller 5 and finally exits through the feed roller 4. While flowing in the cooling water tank 2, heat exchange is completed, ensuring cooling from the direction of the discharge roller 5 to the direction of the feed roller 4. The water temperature changes evenly from low to high, allowing the plastic strip to pass through different temperature zones sequentially, resulting in a step-by-step temperature decrease. This avoids sudden cooling and effectively improves the yield rate. Simultaneously, the air collector 12 located at the feed roller 4 in the drying section 10 absorbs the radiant heat from the plastic strip, converting it into hot airflow that is transported to the air collector 12 at the discharge roller 5. The hot airflow is then evenly blown onto the upper and lower sides of the plastic strip through several vents 19, achieving uniform hot air drying of the plastic strip. Furthermore, the cooling is achieved through the enclosed section 8. The upper end of the water tank 2 is sealed to extract the generated water vapor, preventing water vapor from affecting the working environment and reducing equipment corrosion. At the same time, it prevents water vapor from entering the drying section 10 and affecting the drying effect on the plastic strip. Before the plastic strip is dried by hot air, two water removal brushes 16 installed in the drying section 10 will remove the moisture from the upper and lower surfaces of the plastic strip and guide it back into the cooling water tank 2 through the guide plate 39, thereby ensuring the drying effect of the plastic strip, effectively reducing the drying time, and ensuring the drying efficiency of the plastic strip.

[0018] Optionally, the drying section 10 includes two assembly frames 11 symmetrically fixed on both sides of the support frame 1, two air collecting components 12 respectively fixed on the two assembly frames 11, a first fan 13 fixed on the outer wall of the assembly frame 11, two air inlet pipes 14 and exhaust pipes 15 with one end connected to the air inlet and air outlet of the first fan 13 respectively, and the other end connected to the two air collecting components 12 respectively, and a guide plate 39 and two water removal brushes 16 fixed on one of the air collecting components 12. The guide plate 39 is inclined, and one of the downward inclined ends of the guide plate 39 extends into the cooling water tank 2; The guide plate 39, the air outlet pipe and the two dewatering brushes 16 are all located close to the discharge roller 5; When in use, the first fan 13 operates, and the air collecting component 12 at the feed roller 4 will absorb the heat emitted by the plastic strip before it is cooled. The heat is then transported to the air collecting component 12 at the discharge roller 5 along with the air through the air inlet pipe 14 and the exhaust pipe 15. The air is then blown evenly onto the plastic strip, and the plastic strip leaving the cooling water tank 2 is heated and dried with hot air. While completing the drying process, heat recovery is achieved, reducing energy consumption and improving energy utilization. When the plastic strip leaves the cooling water tank 2, the two water removal brushes 16 work together to remove the water film remaining on the surface of the plastic strip, which facilitates subsequent hot air drying, ensures the drying quality of the plastic strip, and improves drying efficiency. Furthermore, the guide plate 39 allows the water droplets at the brush to flow back into the cooling water tank 2, preventing water droplets from accumulating at the discharge end.

[0019] Optionally, the gas collecting component 12 includes a lower gas collecting box 17 fixed on the mounting frame 11, an upper gas collecting box 18 hinged to one end of the lower gas collecting box 17, a plurality of vent holes 19 symmetrically and equally spaced on the lower gas collecting box 17 and the upper gas collecting box 18, two gas supply holes 20 respectively opened at one end of the lower gas collecting box 17 and the upper gas collecting box 18 and corresponding to each other, and two strong magnetic blocks 21 respectively fixed at the other end of the lower gas collecting box 17 and the upper gas collecting box 18 and magnetically attracted to each other. The two water removal brushes 16 are respectively fixed on the upper air collection box 18 and the lower air collection box 17, and the guide plate 39 is fixed on the bottom of the lower air collection box 17; The lower air collecting box 17 and the upper air collecting box 18 are connected by an air outlet 20 to form an airflow channel. With the cooperation of several air vents 19, air flows evenly over the surface of the plastic strip. When the first blower 13 is working, the heat from the plastic strip at the feed roller 4, along with the airflow, is evenly drawn into the lower air collecting box 17 and the upper air collecting box 18 through the air vents 19. The air is then transported to the air collecting box 12 at the discharge roller 5, where several air vents on the lower air collecting box 17 and the upper air collecting box 18 are used to circulate the air. Ventilation holes 19 evenly spray plastic strips onto the discharge rollers 5, completing heat recovery and drying. Several ventilation holes 19 are evenly spaced to prevent local overheating or uneven drying, improving product consistency. Since the lower air collection box 17 and the upper air collection box 18 are hinged at one end and magnetically connected at the other end through two strong magnetic blocks 21, the upper air collection box 18 can be rotated to provide space for the plastic strips when they need to be placed. It also makes it easier for the plastic strips to be placed between the two dewatering brushes 16 to ensure the dewatering effect.

[0020] Optionally, the turbulence section 9 includes two liquid collection tanks 22 fixed to the inner walls of both ends of the cooling water tank 2, a first water pump 23 and a second water pump 24 fixed to both ends of the support frame 1, two diversion pipes 25 with one end connected to the liquid outlet of the first water pump 23 and the liquid inlet of the second water pump 24 respectively, and the other end connected to the two liquid collection tanks 22 respectively, and a plurality of liquid passage holes 26 equally spaced on the two liquid collection tanks 22; The inlet of the first water pump 23 is connected to an external coolant supply device via a pipe, and the outlet of the second water pump 24 is connected to an external heat exchange device via a pipe. The two liquid collection tanks 22 are respectively arranged on the upper and lower sides of the plurality of porous baffles 6; The first water pump 23 draws low-temperature coolant from the external coolant supply equipment and inputs it into the collection tank 22 at one end of the cooling water tank 2 through the diversion pipe 25. The coolant is sprayed out from multiple liquid passages 26 in the collection tank 22. The second water pump 24 is located at the other end of the cooling water tank 2. The heated coolant is drawn back to the external heat exchange equipment through another collection tank 22 and the diversion pipe 25. Thus, under the action of drawing and supplying, a directional water flow is formed, which promotes the flow of liquid in the cooling water tank 2 and forces the water flow to turbulently. This allows the low-temperature coolant to enter through the discharge roller 5 and exchange heat with the coolant in the cooling water tank 2, avoiding the problem of temperature accumulation in the static water tank. Afterwards, it is... The material is driven to the feed roller 4, and during the long-term circulation of the coolant, the temperature of the coolant at the end of the cooling water tank 2 near the discharge roller 5 will be lower than the temperature at the end of the cooling water tank 2 near the feed roller 4. This allows for a temperature transition in the coolant in the cooling water tank 2, preventing the plastic strip from rapidly cooling down and causing quality problems when it enters the cooling water tank. At the same time, two liquid collection tanks 22 are respectively set on the upper and lower sides of several porous baffles 6, so that the circulating water will flow through the gaps between the porous baffles 6, forming turbulence, breaking the temperature stratification of the static water layer, forming cross flow, avoiding cooling blind spots and local overheating, and improving the quality stability of the plastic granules.

[0021] Optionally, the enclosed part 8 includes two side cover plates 27 respectively disposed on the two pressing parts 7, an air collecting cover plate 28 hinged to the middle of the support frame 1 and disposed between the two side cover plates 27, a second fan 29 fixed on the side wall of the support frame 1, and a corrugated pipe 30 with one end connected to the air inlet end of the second fan 29 and the other end connected to the air collecting cover plate 28. The outlet of the second fan 29 is connected to an external condensing device; After the plastic strips enter the cooling water tank 2, the high temperature generates a large amount of steam when they come into contact with the water.

[0022] The two side cover plates 27 and the gas collecting cover plate 28 together form a closed space to prevent steam from overflowing. At the same time, the second fan 29 is installed and operates, which can draw steam from the closed space through the corrugated pipe 30. The steam is transported to the external condensing equipment to realize the condensation and recovery of steam. Since the pressing part 7 can be raised and lowered, it is convenient to control the two side cover plates 27 to be separated from the cooling water tank 2. The gas collecting cover plate 28 is hinged with the support frame 1, which makes it convenient to release the two side cover plates 27 and the gas collecting cover plate 28 from the cooling water tank 2 when needed, so that the plastic strip can be placed into the cooling water tank 2. Furthermore, the water vapor in the cooling water tank 2 is extracted, which can avoid the influence of water vapor on the drying part 10 and ensure the drying effect of the drying part 10 on the plastic strip.

[0023] Optionally, the pressing part 7 includes an assembly base 31 fixed on the outer wall of the support frame 1, an electric push rod 32 fixed on the assembly base 31, a connecting frame 33 fixed on the telescopic end of the electric push rod 32, a pressing frame 34 fixed on the lower surface of one of the side cover plates 27, and a plurality of pressing rollers 35 equally spaced on the pressing frame 34. The connecting frame 33 is fixedly connected to one of the side cover plates 27; During use, the electric push rod 32 controls the side cover plate 27 to drive the pressing frame 34 to rise, so that the height of the pressing rollers 35 is higher than the height of the upper surface of the cooling water tank 2. This makes it convenient for the staff to place the plastic strips passing through the feed roller 4 below the pressing rollers 35. At this time, the electric push rod 32 and the connecting frame 33 drive the pressing frame 34 and the side cover plate 27 to descend synchronously, so that the pressing rollers 35 contact the plastic strips at the same time, allowing them to be smoothly immersed in the cooling water in the cooling water tank 2. The side cover plate 27 can be driven to close the top of the cooling water tank 2, reducing steam escape. The two pressing parts 7 work together to ensure that the plastic strips are stably transported in the cooling water in the cooling water tank 2.

[0024] Optionally, the pressing part 7 further includes two guide rods 36 symmetrically fixed on the connecting frame 33 and slidingly engaged with the mounting base 31, two guide rails 37 symmetrically fixed in the cooling water tank 2, and two guide wheels 38 symmetrically rotatably mounted on the pressing frame 34 and corresponding to the two guide rails 37 respectively. When the electric push rod 32 is working, the two guide rods 36 slide with the mounting base 31, thereby effectively restricting the horizontal movement of the connecting frame 33, ensuring that the pressing frame 34 maintains horizontal movement during the lifting process, preventing skewing, and when the pressing frame 34 moves vertically, the two guide wheels 38 roll along the two guide rails 37 in the cooling water tank 2, further restricting the horizontal movement of the pressing frame 34, ensuring the stability of the pressing frame 34's movement, avoiding jamming or vibration caused by uneven force, and preventing fluctuations in several pressing rollers during the downward movement, which would affect the molding quality of the plastic strip.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling and drying device for granulation, characterized in that, include: A support frame (1) is fixedly connected to a cooling water tank (2). Both ends of the support frame (1) are fixedly connected to a material support frame (3). Feed rollers (4) and discharge rollers (5) are respectively installed on the two material support frames (3). Several perforated baffles (6) are placed in the cooling water tank (2). Pressing section (7): Two pressing sections (7) are symmetrically installed in the material support frame (3) and the cooling water tank (2) to press the plastic strip material passing through the feed roller (4) into the cooling water tank (2); A sealing part (8) is installed on the support frame (1) and the two pressing parts (7) to shield the top of the cooling water tank (2); The turbulence section (9) is installed at both ends of the support frame (1) and the cooling water tank (2) to push the cooling water on one side of the cooling water tank (2) to the other side; The drying section (10) is located on both sides of the support frame (1) and is used to extract the heat of the plastic strip at the feed roller (4) and transport it to the discharge roller (5).

2. The granulation cooling and drying device as described in claim 1, characterized in that, The drying section (10) includes two assembly frames (11) symmetrically fixed on both sides of the support frame (1), two air collecting components (12) respectively fixed on the two assembly frames (11), a first fan (13) fixed on the outer wall of the assembly frame (11), two air inlet pipes (14) and exhaust pipes (15) respectively connected at one end to the air inlet end and the air outlet end of the first fan (13) and at the other end to the two air collecting components (12), and a guide plate (39) and two water removal brushes (16) fixed on one of the air collecting components (12). The guide plate (39) is inclined, and one of the downward inclined ends of the guide plate (39) extends into the cooling water tank (2); The guide plate (39), the air outlet pipe and the two dewatering brushes (16) are all located close to the discharge roller (5).

3. The granulation cooling and drying device as described in claim 2, characterized in that, The gas collecting component (12) includes a lower gas collecting box (17) fixed on the assembly frame (11), an upper gas collecting box (18) hinged to one end of the lower gas collecting box (17), a plurality of vent holes (19) symmetrically and equally spaced on the lower gas collecting box (17) and the upper gas collecting box (18), two gas supply holes (20) respectively opened at one end of the lower gas collecting box (17) and the upper gas collecting box (18) and corresponding to each other, and two strong magnetic blocks (21) respectively fixed at the other end of the lower gas collecting box (17) and the upper gas collecting box (18) and magnetically attracted to each other. The two water removal brushes (16) are fixed on the upper air collection box (18) and the lower air collection box (17) respectively, and the guide plate (39) is fixed on the bottom of the lower air collection box (17).

4. The granulation cooling and drying device as described in claim 3, characterized in that, The turbulence section (9) includes two liquid collection tanks (22) fixed to the inner walls of both ends of the cooling water tank (2), a first water pump (23) and a second water pump (24) fixed to both ends of the support frame (1), two diversion pipes (25) with one end connected to the liquid outlet of the first water pump (23) and the liquid inlet of the second water pump (24) respectively, and the other end connected to the two liquid collection tanks (22) respectively, and a plurality of liquid passage holes (26) equally spaced on the two liquid collection tanks (22). The inlet end of the first water pump (23) is connected to the external coolant supply equipment through a pipe, and the outlet end of the second water pump (24) is connected to the external heat exchange equipment through a pipe. The two liquid collection tanks (22) are respectively arranged on the upper and lower sides of the plurality of porous baffles (6).

5. A cooling and drying device for granulation as described in claim 4, characterized in that, The enclosed part (8) includes two side cover plates (27) respectively disposed on the two pressing parts (7), an air collecting cover plate (28) hinged to the middle of the support frame (1) and disposed between the two side cover plates (27), a second fan (29) fixed on the side wall of the support frame (1), and a corrugated pipe (30) with one end connected to the air inlet end of the second fan (29) and the other end connected to the air collecting cover plate (28). The outlet of the second fan (29) is connected to an external condensing device.

6. The granulation cooling and drying device as described in claim 5, characterized in that, The pressing part (7) includes an assembly seat (31) fixed on the outer wall of the support frame (1), an electric push rod (32) fixed on the assembly seat (31), a connecting frame (33) fixed on the telescopic end of the electric push rod (32), a pressing frame (34) fixed on the lower surface of one of the side cover plates (27), and a plurality of pressing rollers (35) equally spaced on the pressing frame (34). The connecting frame (33) is fixedly connected to one of the side cover plates (27).

7. A cooling and drying apparatus for granulation as described in claim 6, characterized in that, The pressing part (7) also includes two guide rods (36) symmetrically fixed on the connecting frame (33) and slidingly engaged with the mounting base (31), two guide rails (37) symmetrically fixed in the cooling water tank (2), and two guide wheels (38) symmetrically rotatably mounted on the pressing frame (34) and corresponding to the two guide rails (37) respectively.

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