Air drying device for granulator

Abstract

The utility model discloses an air drying device for a pelletizer, and relates to the technical field of pelletization of the pelletizer, the air drying device comprises a rack for bearing plastic strips to move, roll shafts for guiding the plastic strips are arranged at the two ends of the rack, and an air bellow for air drying of the plastic strips is arranged at the position, below the plastic strips, of the rack. And a fan communicated with the air bellow is arranged on the outer side of the air bellow. Roll shafts for guiding plastic strips are installed on the machine frame, when the plastic strips move, the roll shafts rotate to assist the plastic strips in moving and reduce the possibility that the plastic strips fall into the machine frame, an air bellow is arranged on the machine frame and located below the plastic strips, and a draught fan which is arranged on the outer wall of the air bellow and communicated with the air bellow is used for air drying of the plastic strips. And the possibility that the plastic strips are snapped during movement after being heated and dried by the drying device is reduced.

Description

Technical Field

[0001] This application relates to the field of granulation technology, and in particular to air drying devices for granulators. Background Technology

[0002] The plastic granulation production process involves mixing resin, filler, color powder, and various additives, then adding them to a screw extruder for melt mixing and extrusion to form a strip. After extrusion, the strip is typically cooled by water cooling, i.e., the strip enters a cooling water tank for cooling. After cooling, it is dried by a drying device and then cut into granules in a pelletizer.

[0003] In the prior art, the drying device dries the residual moisture on the plastic strip after it has been cooled in a cooling water tank by heating. Then the plastic strip leaves the drying device, cools in the air, and enters the pelletizer for pelletizing.

[0004] Regarding the aforementioned technologies, the inventors believe that heating the plastic strip with a drying device to remove residual moisture, and then reheating it after cooling, will cause the plastic strip to break during movement, affecting the production of the granulator. Utility Model Content

[0005] The purpose of this application is to provide a drying device for a granulator to improve the problem that when residual moisture is removed by heating in the drying device, the plastic strip is reheated after cooling, which causes the plastic strip to break during movement, thus affecting the production of the granulator.

[0006] The air-drying device for a granulator provided in this application adopts the following technical solution:

[0007] A drying device for a granulator includes a frame that carries the movement of plastic strips. Rollers that guide the plastic strips are provided at both ends of the frame. An air box for drying the plastic strips is provided below the plastic strips on the frame. A fan communicating with the air box is provided on the outside of the air box.

[0008] By adopting the above technical solution, a roller is installed on the frame to guide the plastic strip. The roller rotates when the plastic strip moves to assist the movement of the plastic strip and reduce the possibility of the plastic strip falling in. An air box is set on the frame below the plastic strip. A fan connected to the air box is installed on the outer wall of the air box to dry the plastic strip, reducing the possibility of the plastic strip breaking when it moves after being heated and dried by the drying device.

[0009] Optionally, a ventilation plate is provided near the plastic strip of the air box, and the ventilation plate is provided with a plurality of ventilation slots arranged along the width direction of the plastic strip.

[0010] By adopting the above technical solution, a ventilation plate is installed near the position of the air box to prevent the plastic strip from partially drooping into the air box when it moves. A ventilation groove is opened on the ventilation plate in the same direction as the width of the plastic strip. When the plastic strip moves through the rollers at both ends of the frame, the fan blows air into the air box, and the ventilation groove dries all the plastic strips that have passed through the ventilation plate, preventing the residual moisture on some plastic strips from not being dried.

[0011] Optionally, the frame is provided with a mounting bracket between the roller that guides the plastic strip and the air box. The mounting bracket is rotatably equipped with a rotating roller, and a water-absorbing sleeve that contacts the plastic strip is provided on the outside of the rotating roller.

[0012] By adopting the above technical solution, a water-absorbing sleeve is set on the outside of the rotating roller connected to the mounting frame. The water-absorbing sleeve contacts the plastic strip. After the plastic strip moves above the roller shaft and passes the rotating roller, the water-absorbing sleeve on the rotating roller absorbs the residual moisture on the outside of the water-cooled plastic strip, reducing the possibility that the plastic strip will have too much moisture after passing through the air box and cannot be dried.

[0013] Optionally, the mounting frame is provided with an extrusion plate below the rotating roller, the extrusion plate is close to the rotating roller and is pressed against the water-absorbing sleeve, and a driving component for driving the rotating roller to rotate is provided on one side of the mounting frame.

[0014] By adopting the above technical solution, an extrusion plate is set below the rotating roller on the mounting frame. The extrusion plate squeezes the water-absorbing sleeve near the rotating roller, squeezing out the water absorbed in the water-absorbing sleeve. This prevents the water-absorbing sleeve from becoming saturated and unable to absorb the residual water on the outside of the plastic strip. The rotating roller is driven by the drive component to rotate synchronously in the direction of the plastic strip movement, reducing the possibility of the water-absorbing sleeve on the outside of the rotating roller getting stuck with the extrusion plate.

[0015] Optionally, the frame is provided with a water tank corresponding to the extrusion plate at a position below the extrusion plate, and a water guide plate is provided on the extrusion plate away from the rotating roller to guide the extruded water to the water tank.

[0016] By adopting the above technical solution, a water tank is set below the extrusion plate on the frame to collect the water squeezed out of the stream sleeve by the extrusion plate. A water guide plate is set below the extrusion plate to guide the water squeezed out of the extrusion plate to the water tank, preventing the water from flowing around and causing damage to other equipment.

[0017] Optionally, the mounting frame has grooves on both sides of the rotating roller, and the two ends of the extrusion plate are provided with square slide rods that are inserted into the grooves. An elastic element is provided between the side of the square slide rod away from the rotating roller and the inner wall of the groove.

[0018] By adopting the above technical solution, grooves are opened on the mounting brackets located on both sides of the rotating roller, and square slide rods that fit into the grooves are set at both ends of the extrusion plate. An elastic element connected to the inner wall of the groove is installed on the side of the square slide rod away from the rotating roller. The elastic element pushes the extrusion plate close to the water-absorbing sleeve, squeezes the water-absorbing sleeve, and squeezes out the water in the water-absorbing sleeve.

[0019] Optionally, the outer wall of the roller is provided with a groove 1 that fits with the plastic strip at intervals, and the outer wall of the absorbent sleeve is provided with a groove 2 that fits with the plastic strip at intervals.

[0020] By adopting the above technical solution, grooves are set at intervals on the roller shaft. The plastic strips on the roller shaft fall into grooves and move, separating and conveying the plastic strips to prevent them from tangling and knotting together during movement. Grooves are also set at intervals on the outer wall of the absorbent sleeve outside the rotating roller, allowing the plastic strips to fall into the grooves of the absorbent sleeve separately. This enables the absorbent sleeve to better absorb residual moisture on the plastic strips, allowing them to dry faster after passing through the air box.

[0021] Optionally, the frame is provided with an arc-shaped wind deflector above the plastic strip, corresponding to the ventilation plate.

[0022] By adopting the above technical solution, an arc-shaped baffle is set above the plastic strip on the frame. When the plastic strip is being dried, the baffle redirects the airflow passing through the plastic strip along the arc-shaped sidewall, thereby accelerating the drying speed of the plastic strip.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. A roller is installed on the frame to guide the plastic strip. The roller rotates when the plastic strip moves to assist the movement of the plastic strip and reduce the possibility of the plastic strip sagging. An air box is set on the frame below the plastic strip. A fan connected to the air box is installed on the outer wall of the air box to dry the plastic strip, reducing the possibility of the plastic strip breaking when it moves after being heated and dried by the drying device.

[0025] 2. An extrusion plate is installed below the rotating roller on the mounting frame. The extrusion plate squeezes the water-absorbing sleeve near the rotating roller, squeezing out the water absorbed in the water-absorbing sleeve. This prevents the water-absorbing sleeve from becoming saturated and unable to absorb the residual water on the outside of the plastic strip, allowing the plastic strip to dry quickly after passing through the air box. The rotating roller is driven by the drive component to rotate synchronously in the direction of the plastic strip's movement, reducing the possibility of the water-absorbing sleeve on the outside of the rotating roller getting stuck with the extrusion plate.

[0026] 3. Grooves are set at intervals on the roller shaft. The plastic strips on the roller shaft fall into groove one and move, separating the plastic strips and preventing them from tangling and knotting together during movement. Grooves two are set at intervals on the outer wall of the water-absorbing sleeve outside the rotating roller, so that the plastic strips fall into groove two of the water-absorbing sleeve separately. This allows the water-absorbing sleeve to better absorb the residual moisture on the plastic strips, enabling the plastic strips to dry faster after passing through the air box. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of the air-drying device for a granulator;

[0028] Figure 2 This is a partial cross-sectional view of the air-drying device for the granulator in the embodiment;

[0029] Figure 3 yes Figure 2 A schematic diagram of Part A. In the diagram: 1. Frame; 2. Roller; 21. Groove I; 3. Plastic strip; 4. Air box; 41. Fan; 42. Ventilation plate; 421. Ventilation slot; 43. Baffle plate; 5. Mounting frame; 51. Rotating roller; 52. Water suction sleeve; 521. Groove II; 53. Extrusion plate; 531. Water guide plate; 532. Square slide bar; 533. Elastic component; 54. Driving component; 55. Slide groove; 6. Water tank. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.

[0031] Air drying device for granulator, refer to Figure 1 and Figure 2 The system includes a frame 1, with bearings at both ends of the frame 1 rotatably connected to rollers 2 to support and guide the plastic strips 3 extruded by the extrusion device of the granulator. A mounting frame 5 is welded to one end of the frame 1 near the roller 2 that guides the plastic strips 3. The mounting frame 5 is rotatably connected to a rotating roller 51 via bearings. A water-absorbing sleeve 52 made of adhesive sponge is fitted on the outside of the rotating roller 51. The water-absorbing sleeve 52 contacts the plastic strip 3. After the plastic strip 3 passes through the roller 2 and the rotating roller 51, the water-absorbing sleeve 52 on the rotating roller 51 absorbs the residual moisture on the outside of the water-cooled plastic strip 3. A bellows 4 is bolted to the frame 1. A fan 41 connected to a power source is installed on the outside of the bellows 4. The fan 41, which is connected to the bellows 4, blows air into the bellows 4, so that the bellows 4 is located below the plastic strip 3 and blows air onto the plastic strip 3 to dry it.

[0032] Reference Figure 1 and Figure 2A ventilation plate 42 is bolted to the air box 4 near the plastic strip 3 to prevent the plastic strip 3 from drooping into the air box 4 when it moves. A ventilation groove 421 is opened on the ventilation plate 42, which is consistent with the width direction of the plastic strip 3. When the plastic strip 3 moves through the rollers 2 at both ends of the frame 1, the fan 41 blows air into the air box 4. The ventilation groove 421 dries all the plastic strips 3 that have passed through the ventilation plate 42, preventing residual moisture on some plastic strips 3 from not being dried. An arc-shaped baffle plate 43 is bolted to the frame 1 above the plastic strip 3, so that the baffle plate 43 corresponds to the ventilation plate 42 on the air box 4. When drying the plastic strip 3, the baffle plate 43 redirects the airflow passing through the plastic strip 3 along the arc-shaped side wall to the plastic strip 3, thereby accelerating the drying speed of the plastic strip 3.

[0033] Reference Figure 2 and Figure 3 A groove 55 is formed on the mounting bracket 5 located on both sides of the rotating roller 51. An extrusion plate 53 is installed below the rotating roller 51 to abut against the water-absorbing sleeve 52. Square sliding rods 532, which fit into the groove 55, are welded to both ends of the extrusion plate 53. An elastic element 533, a spring, is installed on the side of the square sliding rod 532 away from the rotating roller 51, connecting to the inner wall of the groove 55. The spring pushes the extrusion plate 53 closer to the water-absorbing sleeve 52, squeezing the sponge-made sleeve 52 to expel water from it, thus preventing the sleeve from becoming saturated with water. A drive unit 54 is bolted to the side wall of frame 5. The drive unit 54 is a small-power synchronous motor connected to the power supply. The drive end of the motor drives the rotating roller 51 to rotate in the direction of movement of the plastic strip 3 through a coupling, preventing the water suction sleeve 52 on the outside of the rotating roller 51 from getting stuck. A water tank 6 is bolted to the frame 1 below the extrusion plate 53. The side wall of the water tank 6 has a water outlet to collect the water squeezed out by the extrusion plate 53. An integrally formed water guide plate 531 is set below the extrusion plate 53 to guide the water on the extrusion plate 53 to the water tank 6 to prevent the water from flowing around and damaging other equipment.

[0034] Reference Figures 1 to 3 Grooves 1 21 are evenly provided on the rollers 2 at both ends of the frame 1 along the length of the rollers 2. The plastic strips 3 on the rollers 2 fall into the grooves 1 21 for guidance, and the plastic strips 3 are conveyed separately to prevent them from getting tangled and knotted during conveying. Grooves 2 521 are evenly provided on the water-absorbing sleeve 52 on the outside of the rotating roller 51 along the length of the water-absorbing sleeve 52. The plastic strips 3 fall into the grooves 2 521 of the water-absorbing sleeve 52 separately, so that the water-absorbing sleeve 52 can better absorb the moisture on the plastic strips 3, and the plastic strips 3 can be dried faster after passing through the air box 4.

[0035] The implementation principle of this application embodiment is as follows:

[0036] In actual operation, after the plastic strip 3 is extruded through the water-cooling equipment, it is guided by the roller 2 on the frame 1 to the air box 4. The plastic strip 3 first passes through the water-absorbing sleeve 52 on the outside of the rotating roller 51. The driving component 54 drives the rotating roller 51 to rotate in the direction of movement of the plastic strip 3. The water-absorbing sleeve 52 absorbs the residual moisture on the outside of the plastic strip 3 and dries the plastic strip 3. The extrusion plate 53 located below the rotating roller 51 of the mounting frame 5 squeezes out the water absorbed by the water-absorbing sleeve 52, so that the water-absorbing sleeve 52 can continuously absorb the residual moisture on the plastic strip 3. When the plastic strip 3 passes through the air box 4, the fan 41 on the outside of the air box 4 blows air into the air box 4, so that the airflow passes through the ventilation slot 421 opened along the width direction of the plastic strip 3 on the ventilation plate 42, and dries the plastic strip 3. The airflow passing through the plastic strip 3 is redirected to the plastic strip 3 by the arc-shaped wind baffle 43, which accelerates the drying speed of the plastic strip 3. By air-drying the plastic strip 3, the possibility of it breaking during movement after being heated and dried by the drying device is reduced. The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are indicated by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drying device for a granulator, characterized in that: The frame (1) is used to carry the plastic strip (3) to move. Rollers (2) are provided at both ends of the frame (1) to guide the plastic strip (3). A blower (4) is provided below the plastic strip (3) to dry the plastic strip (3). A fan (41) communicating with the blower (4) is provided on the outside of the blower (4).

2. The air-drying device for a granulator according to claim 1, characterized in that: The air box (4) is provided with a ventilation plate (42) near the plastic strip (3), and the ventilation plate (42) is provided with a plurality of ventilation slots (421) arranged along the width direction of the plastic strip (3).

3. The air-drying device for a granulator according to claim 2, characterized in that: The frame (1) is provided with a mounting frame (5) between the roller (2) for introducing the plastic strip (3) and the air box (4). The mounting frame (5) is rotatably provided with a rotating roller (51). A water-absorbing sleeve (52) that contacts the plastic strip (3) is provided on the outside of the rotating roller (51).

4. The air-drying device for a granulator according to claim 3, characterized in that: The mounting frame (5) is provided with an extrusion plate (53) below the rotating roller (51). The extrusion plate (53) is pressed against the water-absorbing sleeve (52) near the rotating roller (51). A drive member (54) for driving the rotating roller (51) to rotate is provided on one side of the mounting frame (5).

5. The air-drying device for a granulator according to claim 4, characterized in that: The frame (1) is provided with a water tank (6) corresponding to the extrusion plate (53) at a position below the extrusion plate (53), and a water guide plate (531) is provided on the extrusion plate (53) away from the rotating roller (51) to guide the extruded water to the water tank (6).

6. The air-drying device for a granulator according to claim 5, characterized in that: The mounting bracket (5) has grooves (55) on both sides of the rotating roller (51). The extrusion plate (53) has square slide rods (532) at both ends that are inserted into the grooves (55). An elastic element (533) is provided between the side of the square slide rod (532) away from the rotating roller (51) and the inner wall of the groove (55).

7. The air-drying device for a granulator according to claim 3, characterized in that: The outer wall of the roller (2) is provided with a groove 1 (21) that fits with the plastic strip (3) at intervals, and the outer wall of the water-absorbing sleeve (52) is provided with a groove 2 (521) that fits with the plastic strip (3) at intervals.

8. The air-drying device for a granulator according to claim 2, characterized in that: The frame (1) is provided with an arc-shaped wind deflector (43) above the plastic strip (3) that corresponds to the ventilation plate (42).

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