Polyester chip pelletizing device

Abstract

The present application provides a polyester chip granulation device, which relates to the field of polyester granule manufacturing. The device comprises a fixed bracket, a mold roller, a driving roller, a driving device, a heat-insulating sealing plate, a heating sealing plate, a cooling water tank, an exhaust device, and an insulation box. During operation, the driving device drives the driving roller to rotate, and the driving roller drives the mold roller to rotate, and the internal space of the mold roller is also in a negative pressure state. When the cavity passes through the insulation box, the polyester melt flows into the cavity. When the cavity passes through the cooling water tank, the inner wall of the cavity is cooled, and the polyester melt on the inner wall gradually solidifies and shrinks in volume. Under the action of the pressure difference, the polyester granules formed in the cavity break away from the cavity and enter the cooling water tank. When the cavity passes through the heating sealing plate, the heating sealing plate heats it, thereby realizing continuous granulation of polyester. The present application does not require a separate control system to realize continuous operation of polyester granulation, which helps to improve polyester granulation efficiency and reduce polyester granulation costs.

Description

Technical Field

[0001] The present application relates to the technical field of polyester particle manufacturing, and in particular to a polyester chip pelletizing device. Background Art

[0002] Polyester chips, such as polyethylene terephthalate (PET), are produced by the polycondensation of polyols and polyacids. Polyester materials typically need to be sliced ​​and processed into pellets for storage, transportation, and secondary processing into other products. Prior art polyester chip pelletization typically requires first drawing the polyester melt into strands, then slicing the solidified strands into pellets. This involves at least two steps: strand drawing and cutting. Both the strand drawing and cutting steps require separate motion control systems, resulting in high pelletizing costs and low efficiency. Summary of the Invention

[0003] The present application provides a polyester chip granulation device, which is used to solve the technical problems of high cost and low efficiency of polyester granulation in the prior art.

[0004] In an embodiment of the present application, a polyester chip pelletizing device is provided, comprising a fixed support, a mold roller, a driving roller, a driving device, a heat-insulating sealing plate, a heating sealing plate, a cooling water tank, an exhaust device, and a heat-insulating box;

[0005] The two ends of the mold roller are closed, the mold roller is rotatably connected to the fixed bracket, the outer side of the mold roller is provided with a plurality of cavities, and a side of the cavity close to the center of the mold roller is provided with a plurality of ventilation holes, and the cavity is connected to the internal space of the mold roller through the ventilation holes;

[0006] The driving device is fixedly connected to the fixed bracket, and the driving device is drivingly connected to the driving roller;

[0007] The driving roller is located inside the mold roller, the driving roller is in transmission connection with the mold roller, and the driving roller is suitable for driving the mold roller to rotate;

[0008] The heat preservation box is suitable for containing the polyester in a molten state and keeping the polyester melt warm, and one side of the heat preservation box is provided on the outer side of the mold roller and is in sealing and sliding cooperation with the outer side surface of the mold roller;

[0009] The cooling water tank is suitable for containing cooling water, and one side of the cooling water tank is provided on the outer side of the mold roller and is in sealing and sliding cooperation with the outer side surface of the mold roller;

[0010] The heat-insulating sealing plate is located inside the mold roller, and covers the inner side surface of the mold roller corresponding to the area where the heat-insulating box is covered, and the heat-insulating sealing plate is in sealing and sliding cooperation with the inner side surface of the mold roller;

[0011] The heating sealing plate covers the inner side surface of the mold roller and is in sealing and sliding cooperation with the inner side surface of the mold roller. The heating sealing plate is located between the cooling water tank and the heat preservation box, and is suitable for heating the mold roller.

[0012] The air extraction device is fixedly connected to the cooling water tank or the fixed bracket, and the air inlet of the air extraction device is communicated with the top space inside the cooling water tank;

[0013] The central axis of the driving roller is parallel to the central axis of the mold roller and is arranged horizontally.

[0014] In some embodiments of the embodiments of the present application, a cooling transition sealing plate is further included, which covers the outer side of the mold roller and is sealed and slidably matched with the outer side of the mold roller. One side of the cooling transition sealing plate is arranged against the insulation box, the cooling transition sealing plate is located inside the cooling water tank, and the cooling transition sealing plate is located below the mold roller.

[0015] In some embodiments of the embodiments of the present application, a cleaning plate is further included, which covers the outer side of the mold roller. The cleaning plate has bristles on the side close to the mold roller, and the ends of the bristles are pressed tightly against the outer side of the mold roller. The cleaning plate is located between the cooling water tank and the insulation box.

[0016] In some embodiments of the embodiments of the present application, an air blow gun is further included, which is located outside the mold roller, and the air port of the air blow gun is set toward the outer side of the mold roller. The position of the air port on the outer side of the mold roller is between the cleaning plate and the insulation box, and the air outlet of the exhaust device is connected to the air inlet of the air blow gun through an air pipe.

[0017] In some embodiments of the embodiments of the present application, the driving roller is located between the heating sealing plate and the insulating sealing plate, and the driving roller includes a rubber roller, which is pressed against the inner side surface of the mold roller corresponding to the cooling water tank cover area, and the outer side surface of the rubber roller is rollingly connected to the inner side surface of the mold roller.

[0018] In some embodiments of the embodiments of the present application, the outer side surface of the mold roller has a first boundary point, a second boundary point, a third boundary point, a fourth boundary point, a fifth boundary point, a sixth boundary point, a seventh boundary point, an eighth boundary point, and a ninth boundary point that are on the same cross-sectional plane and arranged in sequence along the circumferential direction;

[0019] The center of the mold roller on the cross-sectional plane is a first center, and the center of the driving roller on the cross-sectional plane is a second center;

[0020] A straight line passing through the first center of the circle and the first boundary point is a first straight line, a straight line passing through the first center of the circle and the second boundary point is a second straight line, a straight line passing through the first center of the circle and the third boundary point is a third straight line, a straight line passing through the first center of the circle and the fourth boundary point is a fourth straight line, a straight line passing through the first center of the circle and the fifth boundary point is a fifth straight line, a straight line passing through the first center of the circle and the sixth boundary point is a sixth straight line, a straight line passing through the first center of the circle and the seventh boundary point is a seventh straight line, a straight line passing through the first center of the circle and the eighth boundary point is an eighth straight line, and a straight line passing through the first center of the circle and the ninth boundary point is a ninth straight line;

[0021] The two boundaries of the region where the heat preservation box is covered on the mold roller along the circumferential direction are respectively located on the second straight line and the ninth straight line;

[0022] The two boundaries of the covering area of ​​the heat-insulating sealing plate on the mold roller along the circumferential direction are respectively located on the second straight line and the ninth straight line;

[0023] The blowing port of the blowing gun is located between the second straight line and the third straight line on the outer side of the mold roller;

[0024] The two boundaries of the covering area of ​​the cleaning plate on the mold roller along the circumferential direction are respectively located on the fourth straight line and the fifth straight line;

[0025] The two boundaries of the covering area of ​​the heating sealing plate on the mold roller along the circumferential direction are respectively located on the fourth straight line and the sixth straight line;

[0026] The second circle center is located on the seventh straight line;

[0027] Two boundaries of the area where the water tank is covered on the mold roller along the circumferential direction are respectively located on the fifth straight line and the ninth straight line.

[0028] In some implementations of the embodiments of the present application, the first straight line and the sixth straight line are arranged horizontally, and the fourth straight line and the eighth straight line are arranged vertically.

[0029] In some implementation plans of the embodiments of the present application, the angle between the second straight line and the first straight line is 45 degrees, the angle between the second straight line and the third straight line is 22.5 degrees, the angle between the third straight line and the fourth straight line is 22.5 degrees, the angle between the fourth straight line and the fifth straight line is 45 degrees, the angle between the fifth straight line and the sixth straight line is 45 degrees, the angle between the sixth straight line and the seventh straight line is 45 degrees, the angle between the seventh straight line and the eighth straight line is 45 degrees, the angle between the eighth straight line and the ninth straight line is 45 degrees, and the angle between the ninth straight line and the first straight line is 45 degrees.

[0030] In some implementations of the embodiments of the present application, the driving roller further includes a second rotating shaft, a fixed sleeve, and a gear, the second rotating shaft is rotatably connected to the fixed bracket, the second rotating shaft is parallel to the central axis of the mold roller, the fixed sleeve is sleeved on the second rotating shaft and fixedly connected to the second rotating shaft, the rubber roller is sleeved on the fixed sleeve and fixedly connected to the fixed sleeve, the gear is sleeved on the fixed sleeve and fixedly connected to the fixed sleeve, and the driving device is transmission-connected to the second rotating shaft;

[0031] End caps are fixedly connected to both ends of the mold roller, and the end caps are sealed with the ends of the mold roller. A first rotating shaft is fixedly connected to the center of the end caps. The first rotating shaft is parallel to the second rotating shaft. The first rotating shaft is rotatably connected to the fixed bracket. A gear ring is fixedly connected to the inner side surface of the mold roller. The gear ring is arranged around the first rotating shaft and is meshed with the gear for transmission connection.

[0032] The mold roller has a construction section, which is located between the two ends of the mold roller along the axial direction of the mold roller. The gear ring is located on the outside between the two ends of the construction section, and the two ends of the rubber roller are located on the inside between the two ends of the construction section. The mold cavities are distributed on the inside between the two ends of the construction section.

[0033] The two boundaries of the region where the heat preservation box is covered on the mold roller along the axial direction of the mold roller are respectively located outside between the two ends of the structural section;

[0034] The two boundaries of the region where the cooling water tank is covered on the mold roller along the axial direction of the mold roller are respectively located outside between the two ends of the structural section.

[0035] In some embodiments of the embodiments of the present application, the driving device includes a motor, which is fixedly connected to the fixed bracket, a driving pulley is fixedly connected to the output shaft of the motor, a driven pulley is fixedly connected to the end of the second rotating shaft, a transmission belt is wrapped around the driving pulley and the driven pulley, and the driving pulley and the driven pulley are connected via the transmission belt.

[0036] This application has the following beneficial effects:

[0037] During the working process, the driving device and the vacuum pump are in the starting state; the side wall of the insulation box is provided with an electric heating plate and a temperature controller to keep the molten polyester in the insulation box warm, and cooling water is filled in the cooling water tank. The driving device drives the driving roller to rotate, and the driving roller drives the mold roller to rotate, and the vacuum pump extracts air from the top space inside the cooling water tank to form a negative pressure inside the cooling water tank, and the air inside the mold roller enters the cooling water tank through the cavity in the cooling water tank, and the air outside the mold roller enters the mold roller through the cavity between the heating sealing plate and the insulation box, and the internal space inside the mold roller is also in a negative pressure state; when the cavity passes through the insulation box, the polyester melt flows into the cavity, and the heat insulation sealing plate seals the inner side of the mold roller corresponding to the cavity in the insulation box, which helps to prevent the air inside the mold roller from entering the insulation box through the cavity inside the insulation box; in the cooling water tank The cooling water exchanges heat with the mold roller, the temperature of the inner wall of the cavity gradually decreases, the polyester melt in the cavity gradually solidifies and shrinks in volume, and the polyester melt is completely solidified and formed when the cavity passes through the cooling water tank. Under the action of the pressure difference, the polyester particles formed in the cavity break away from the cavity and enter the cooling water tank; the heating sealing plate adopts an electric heating plate, and the heating sealing plate heats the cavity when it passes through the heating sealing plate, so that the cooling water attached to the inner wall of the cavity is heated and evaporates and the temperature of the inner wall of the cavity is increased, which helps the molten polyester to flow into the cavity after the cavity enters the insulation box again; the above process is repeated to realize continuous granulation of polyester; compared with the prior art of first drawing strips and then cutting into granules, the present application does not require a separate control system to realize continuous operation of polyester granulation, and there is no intermittent independent process, the consistency is higher, which helps to improve the granulation efficiency of polyester and reduce the granulation cost of polyester. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1Schematic diagram of the structure of the polyester chip granulation device in the embodiment of the present application;

[0040] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0041] Figure 3 It is along Figure 1 Cross-sectional view along the midline BB;

[0042] Figure 4 It is a schematic diagram of the distribution position relationship of various components along the circumferential direction in the embodiment of the present application.

[0043] Reference numerals:

[0044] 101. Fixed bracket; 102. Mold roller; 103. Driving roller; 104. Driving device; 105. Insulating sealing plate; 106. Heating sealing plate; 107. Cooling water tank; 108. Exhaust device; 109. Insulating box; 110. Cavity; 111. Air vent; 112. Cooling transition sealing plate; 113. Cleaning plate; 114. Air blow gun; 115. Rubber roller; 116. Second rotating shaft; 117. Fixed sleeve; 118. Gear; 119. End cover; 120. First rotating shaft; 121. Ring gear; 122. Structural section; 123. Driving pulley; 124. Driven pulley; 125. Transmission belt;

[0045] O1, the first center of the circle; O2, the second center of the circle;

[0046] P1, first boundary point; L1, first straight line; P2, second boundary point; L2, second straight line; P3, third boundary point; L3, third straight line; P4, fourth boundary point; L4, fourth straight line; P5, fifth boundary point; L5, fifth straight line; P6, sixth boundary point; L6, sixth straight line; P7, seventh boundary point; L7, seventh straight line; P8, eighth boundary point; L8, eighth straight line; P9, ninth boundary point; L9, ninth straight line;

[0047] S1, first liquid level; S2, second liquid level. DETAILED DESCRIPTION

[0048] The implementation methods of the present application are further described in detail below in conjunction with the drawings and examples. The terms used in the implementation methods of the present application are only used to explain the specific examples of the present application and are not intended to limit the present application.

[0049] like Figures 1 to 3As shown, in an embodiment of the present application, a polyester chip granulation device is provided, comprising a fixed bracket 101, a mold roller 102, a driving roller 103, a driving device 104, a heat-insulating sealing plate 105, a heating sealing plate 106, a cooling water tank 107, an exhaust device 108, and a heat-insulating box 109; both ends of the mold roller 102 are closed, the mold roller 102 is rotatably connected to the fixed bracket 101, and the outer side of the mold roller 102 is provided with a plurality of cavities 110, and the side of the cavity 110 close to the center of the mold roller 102 is provided with a plurality of cavities 110. There are several air holes 111, and the cavity 110 is connected to the internal space of the mold roller 102 through the air holes 111; the driving device 104 is fixedly connected to the fixed bracket 101, and the driving device 104 is connected to the driving roller 103; the driving roller 103 is located inside the mold roller 102, and the driving roller 103 is connected to the mold roller 102, and the driving roller 103 is suitable for driving the mold roller 102 to rotate; the heat preservation box 109 is suitable for accommodating the molten polyester and keeping the polyester melt warm, and one side of the heat preservation box 109 is provided on the mold The outer surface of the roller 102 is sealed and slidably matched with the outer surface of the mold roller 102; the cooling water tank 107 is suitable for accommodating cooling water, and one side of the cooling water tank 107 is covered on the outer surface of the mold roller 102 and is sealed and slidably matched with the outer surface of the mold roller 102; the heat insulation sealing plate 105 is located inside the mold roller 102, and the heat insulation sealing plate 105 covers the inner surface of the mold roller 102 corresponding to the area covered by the heat preservation box 109, and the heat insulation sealing plate 105 is sealed and slidably matched with the inner surface of the mold roller 102; the heating seal The sealing plate 106 covers the inner side surface of the mold roller 102 and is sealed and slidably matched with the inner side surface of the mold roller 102. The heating sealing plate 106 is located between the cooling water tank 107 and the insulation box 109. The heating sealing plate 106 is suitable for heating the mold roller 102; the exhaust device 108 is fixedly connected to the cooling water tank 107 or the fixed bracket 101, and the air inlet of the exhaust device 108 is connected to the top space inside the cooling water tank 107; the central axis of the drive roller 103 is parallel to the central axis of the mold roller 102 and is arranged horizontally.

[0050] Through the above implementation of this embodiment, during the working process, the driving device 104 and the exhaust device 108 (using an exhaust pump) are in the starting state; the side wall of the insulation box 109 is provided with an electric heating plate and a temperature controller to keep the polyester melt in the insulation box 109 warm, and the cooling water tank 107 is filled with cooling water. The driving device 104 drives the driving roller 103 to rotate, and the driving roller 103 drives the mold roller 102 to rotate. The exhaust pump exhausts the top space inside the cooling water tank 107 to form a negative pressure inside the cooling water tank 107, and the air inside the mold roller 102 is ventilated. The mold roller 102 is provided with a mold cavity 110 which is located in the cooling water tank 107. The air outside the mold roller 102 enters the mold roller 102 through the mold cavity 110 between the heating sealing plate 106 and the heat preservation box 109. The internal space of the mold roller 102 is also in a negative pressure state. When the mold cavity 110 passes through the heat preservation box 109, the polyester melt flows into the mold cavity 110. The heat insulation sealing plate 105 seals the inner side of the mold roller 102 corresponding to the mold cavity 110 in the heat preservation box 109, which helps to prevent the air inside the mold roller 102 from passing through the heat preservation box 109. 9 The cavity 110 inside enters the insulation box 109; the cooling water in the cooling water tank 107 exchanges heat with the mold roller 102, the temperature of the inner wall of the cavity 110 gradually decreases, the polyester melt in the cavity 110 gradually solidifies and shrinks in volume, and when the cavity 110 passes through the cooling water tank 107, the polyester is completely solidified and formed. Under the action of the pressure difference, the polyester particles formed in the cavity 110 break away from the cavity 110 and enter the cooling water tank 107; the heating sealing plate 106 adopts an electric heating plate. When the cavity 110 passes through the heating sealing plate 106, the heating sealing plate 106 heats it, so that the mold The cooling water attached to the inner wall of the cavity 110 evaporates due to the heat and increases the temperature of the inner wall of the cavity 110, which helps the molten polyester to flow into the cavity 110 after the cavity 110 enters the insulation box 109 again; the above process is repeated to achieve continuous granulation of polyester; compared with the prior art of first pulling the strips and then cutting them into pellets, the present application does not require a separate control system to achieve continuous operation of the polyester granulation work, and there is no intermittent independent process (such as the two processes of first pulling the strips and then cutting in the prior art), which has higher consistency and helps to improve the polyester granulation efficiency and reduce the polyester granulation cost.

[0051] In some implementations of this embodiment, a cooling transition sealing plate 112 is further included. The cooling transition sealing plate 112 covers the outer surface of the mold roller 102 and is sealed and slidably matched with the outer side surface of the mold roller 102. One side of the cooling transition sealing plate 112 is set against the insulation box 109. The cooling transition sealing plate 112 is located inside the cooling water tank 107. The cooling transition sealing plate 112 is located below the mold roller 102.

[0052] Through the above-mentioned implementation of this embodiment, the cooling transition sealing plate 112 is immersed in the cooling water and performs heat exchange with the cooling water. In the process of the cavity 110 passing through the cooling transition sealing plate 112, it is covered by the cooling transition sealing plate 112 and performs heat exchange with the cooling transition sealing plate 112, which helps to prevent the molten polyester in the cavity 110 from being drawn out by the negative pressure force in the cooling water tank 107. After the cooling of the cooling transition sealing plate 112, the outer surface of the polyester melt has solidified or the polyester melt in the entire cavity 110 is completely solidified. After the solidified polyester enters the cooling water with the cavity 110, the negative pressure can cause the polyester to separate from the cavity 110 in a formed shape, which helps to avoid the shape change or internal bubble generation caused by the negative pressure in the unsolidified state of the polyester.

[0053] In some implementations of this embodiment, a cleaning plate 113 is further included, which covers the outer surface of the mold roller 102. The cleaning plate 113 has bristles on the side close to the mold roller 102, and the ends of the bristles are pressed tightly against the outer side surface of the mold roller 102. The cleaning plate 113 is located between the cooling water tank 107 and the insulation box 109.

[0054] Through the above-mentioned implementation of this embodiment, the bristles (not shown in the figure) have a certain elasticity and are arranged along the radial direction of the mold roller 102. When the cavity 110 passes through the cleaning plate 113, the bristles clean the inner wall of the cavity 110, loosening or detaching the attachments on the inner wall of the cavity 110.

[0055] In some implementations of this embodiment, an air blow gun 114 is further included. The air blow gun 114 is located outside the mold roller 102, and the air port of the air blow gun 114 is set toward the outer side of the mold roller 102. The position of the air port on the outer side of the mold roller 102 is between the cleaning plate 113 and the insulation box 109, and the air outlet of the exhaust device 108 is connected to the air inlet of the air blow gun 114 through an air pipe.

[0056] Through the above-mentioned implementation of this embodiment, when the cavity 110 passes through the air blowing gun 114, the air blowing gun 114 blows air into the inside of the cavity 110, and the high-speed airflow blown out from the air outlet of the air blowing gun 114 helps to blow away the attachments on the inner wall of the cavity 110, so that the inner wall of the cavity 110 remains smooth; the air outlet of the exhaust device 108 is connected to the air inlet of the air blowing gun 114, which helps the exhaust device 108 to provide positive pressure to the air inlet of the air blowing gun 114 or the air blowing gun 114 to provide negative pressure to the air outlet of the exhaust, thereby improving the effective utilization rate of energy consumption (when the exhaust device 108 directly discharges the gas discharged from the air outlet into the external air, the energy of the discharged gas cannot be reused and the effective utilization rate is low), and reducing the granulation cost.

[0057] In some embodiments of this embodiment, the driving roller 103 is located between the heating sealing plate 106 and the heat insulating sealing plate 105, and the driving roller 103 includes a rubber roller 115, which is pressed against the inner side surface of the mold roller 102 corresponding to the area covered by the cooling water tank 107, and the outer side surface of the rubber roller 115 is rollingly connected to the inner side surface of the mold roller 102.

[0058] Through the above-mentioned implementation of this embodiment, the rubber roller 115 can drive the mold roller 102 to rotate by relying on friction. At the same time, the rubber roller 115 has a certain elasticity. Under the extrusion action, when the outer side of the rubber roller 115 is in positive pressure with the air hole 111, the outer side of the rubber roller 115 will be pressed into the air hole 111 and pass through the air hole 111 into the cavity 110, which helps to eject the polyester solidified in the cavity 110 and improve the demolding efficiency and reliability of the polyester (to avoid the solidified polyester from being retained in the cavity 110 and unable to be demolded by the pressure difference force).

[0059] like Figure 4As shown, in some implementations of this embodiment, the outer side surface of the mold roller 102 has a first boundary point P1, a second boundary point P2, a third boundary point P3, a fourth boundary point P4, a fifth boundary point P5, a sixth boundary point P6, a seventh boundary point P7, an eighth boundary point P8, and a ninth boundary point P9 that are on the same cross-sectional plane and arranged in sequence along the circumferential direction; the center of the mold roller 102 on the cross-sectional plane is the first center O1, and the center of the driving roller 103 on the cross-sectional plane is the second center O2; a line passing through the first center O1 and the first boundary point The straight line through point P1 is the first straight line L1, the straight line through the first center O1 and the second boundary point P2 is the second straight line L2, the straight line through the first center O1 and the third boundary point P3 is the third straight line L3, the straight line through the first center O1 and the fourth boundary point P4 is the fourth straight line L4, the straight line through the first center O1 and the fifth boundary point P5 is the fifth straight line L5, the straight line through the first center O1 and the sixth boundary point P6 is the sixth straight line L6, the straight line through the first center O1 and the seventh boundary point P7 is the seventh straight line L7, and the straight line through The straight line between the first circle center O1 and the eighth boundary point P8 is the eighth straight line L8, and the straight line passing through the first circle center O1 and the ninth boundary point P9 is the ninth straight line L9; the two boundaries of the covering area of ​​the heat preservation box 109 on the mold roller 102 along the circumferential direction are respectively located on the second straight line L2 and the ninth straight line L9; the two boundaries of the covering area of ​​the heat insulation sealing plate 105 on the mold roller 102 along the circumferential direction are respectively located on the second straight line L2 and the ninth straight line L9; the blowing port of the air blowing gun 114 is at the position facing the outer side of the mold roller 102 Between the second straight line L2 and the third straight line L3; the two boundaries of the covering area of ​​the cleaning plate 113 on the mold roller 102 along the circumferential direction are respectively located on the fourth straight line L4 and the fifth straight line L5; the two boundaries of the covering area of ​​the heating sealing plate 106 on the mold roller 102 along the circumferential direction are respectively located on the fourth straight line L4 and the sixth straight line L6; the second center O2 is located on the seventh straight line L7; the two boundaries of the covering area of ​​the water tank on the mold roller 102 along the circumferential direction are respectively located on the fifth straight line L5 and the ninth straight line L9.

[0060] In some implementations of this embodiment, the first straight line L1 and the sixth straight line L6 are arranged horizontally, and the fourth straight line L4 and the eighth straight line L8 are arranged vertically.

[0061] In some implementations of this embodiment, the angle between the second straight line L2 and the first straight line L1 is 45 degrees, the angle between the second straight line L2 and the third straight line L3 is 22.5 degrees, the angle between the third straight line L3 and the fourth straight line L4 is 22.5 degrees, the angle between the fourth straight line L4 and the fifth straight line L5 is 45 degrees, the angle between the fifth straight line L5 and the sixth straight line L6 is 45 degrees, the angle between the sixth straight line L6 and the seventh straight line L7 is 45 degrees, the angle between the seventh straight line L7 and the eighth straight line L8 is 45 degrees, the angle between the eighth straight line L8 and the ninth straight line L9 is 45 degrees, and the angle between the ninth straight line L9 and the first straight line L1 is 45 degrees.

[0062] The above embodiments of this embodiment help to improve the structural compactness of each component in the circumferential direction. Preferably, the air outlet of the air blowing gun 114 is oriented toward the fourth straight line (such as Figure 1 and Figure 4 The straight line K in FIG is perpendicular to the fourth straight line L4, and the center of the air blowing port is opposite to the third boundary point P3, which helps to improve the cleaning efficiency of the high-speed airflow on the inner wall of the cavity 110. At the same time, the airflow can also be blown into the interior of the mold roller 102, which helps the air in the mold roller 102 to enter the cooling water tank 107, thereby increasing the pressure difference between the interior of the mold roller 102 and the interior of the cooling water tank 107, thereby helping the pressure difference to cause the polyester in the cavity 110 to be demolded after passing through the cooling water tank 107. Preferably, the inner side wall of the cavity 110 has a draft angle (such as Figure 2 As shown in the angle θ, θ is greater than 0 degrees and less than or equal to 5 degrees, and is preferably set to 4 degrees) to facilitate demolding of the polyester in the cavity 110.

[0063] like Figure 3As shown, in some implementations of this embodiment, the driving roller 103 further includes a second rotating shaft 116, a fixed sleeve 117, and a gear 118. The second rotating shaft 116 is rotatably connected to the fixed bracket 101, and the second rotating shaft 116 is parallel to the central axis of the mold roller 102. The fixed sleeve 117 is sleeved on the second rotating shaft 116 and fixedly connected to the second rotating shaft 116. The rubber roller 115 is sleeved on the fixed sleeve 117 and fixedly connected to the fixed sleeve 117. The gear 118 is sleeved on the fixed sleeve 117 and fixedly connected to the fixed sleeve 117. The driving device 104 is transmission-connected to the second rotating shaft 116; both ends of the mold roller 102 are fixedly connected to end covers 119, and the end covers 119 are sealed with the ends of the mold roller 102. The center of the end cover 119 is fixedly connected to the first rotating shaft 120. The first rotating shaft 120 is parallel to the second rotating shaft 116, and the first rotating shaft 120 is parallel to the fixed The bracket 101 is rotatably connected, and a gear ring 121 is fixedly connected to the inner side of the mold roller 102. The gear ring 121 is arranged around the first rotating shaft 120, and the gear ring 121 is meshed with the gear 118 for transmission connection; the mold roller 102 has a structural section 122, and the structural section 122 is located between the two ends of the mold roller 102 along the axial direction of the mold roller 102. The gear ring 121 is located on the outside between the two ends of the structural section 122, and the two ends of the rubber roller 115 are located on the inside between the two ends of the structural section 122. The cavity 110 is distributed on the inside between the two ends of the structural section 122; the covering area of ​​the insulation box 109 on the mold roller 102 is located on the outside between the two ends of the structural section 122 along the two boundaries in the axial direction of the mold roller 102; the covering area of ​​the cooling water tank 107 on the mold roller 102 is located on the outside between the two ends of the structural section 122 along the two boundaries in the axial direction of the mold roller 102.

[0064] Through the above-mentioned implementation of this embodiment, under the transmission action of the gear 118 and the ring gear 121, a stable transmission ratio can be provided between the mold roller 102 and the drive roller 103, and the load upper limit of the transmission can be increased (to avoid slipping and unstable transmission caused by relying solely on the friction force of the rubber roller 115).

[0065] In some embodiments of this embodiment, the driving device 104 includes a motor, which is fixedly connected to the fixed bracket 101, a driving pulley 123 is fixedly connected to the output shaft of the motor, a driven pulley 124 is fixedly connected to the end of the second rotating shaft 116, a transmission belt 125 is wrapped around the driving pulley 123 and the driven pulley 124, and the driving pulley 123 and the driven pulley 124 are connected through the transmission belt 125.

[0066] In the above embodiments of the present application, the first liquid level S1 of the cooling water in the cooling water tank 107 is between the sixth straight line L6 and the seventh straight line L7, and the second liquid level S2 of the molten polyester in the thermal insulation box 109 is between the ninth straight line L9 and the second straight line L2. Preferably, the second liquid level S2 of the molten polyester in the thermal insulation box 109 is between the first straight line L1 and the second straight line L2.

[0067] In the above-mentioned embodiments of the present application, the sealing is achieved by tight fitting or by providing a sealing member (such as a sealing ring) at the fitting surface for sealing.

[0068] In the annotations of the attached drawings, in order to facilitate the observation of the correspondence between the annotations and the straight lines, boundary points and center of the circle (to reduce the interference of the annotation leaders on observation), the annotations of the straight lines are placed at the ends of the straight lines, the annotations of the boundary points are placed next to the boundary points, and the annotations of the center of the circle are placed next to the center of the circle.

[0069] The above embodiments are merely explanations of the present application and are not limitations of the present application. After reading this specification, those skilled in the art may make modifications to the implementation methods of the present application as needed without any creative contribution. However, as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A polyester chip granulating device, characterized in that: It includes a fixed bracket, a mold roller, a driving roller, a driving device, a heat-insulating sealing plate, a heating sealing plate, a cooling water tank, an exhaust device, and a heat-insulating box; The two ends of the mold roller are closed, the mold roller is rotatably connected to the fixed bracket, the outer side of the mold roller is provided with a plurality of cavities, and a side of the cavity close to the center of the mold roller is provided with a plurality of ventilation holes, and the cavity is connected to the internal space of the mold roller through the ventilation holes; The driving device is fixedly connected to the fixed bracket, and the driving device is drivingly connected to the driving roller; The driving roller is located inside the mold roller, the driving roller is in transmission connection with the mold roller, and the driving roller is suitable for driving the mold roller to rotate; The heat preservation box is suitable for containing the polyester in a molten state and keeping the polyester melt warm, and one side of the heat preservation box is provided on the outer side of the mold roller and is in sealing and sliding cooperation with the outer side surface of the mold roller; The cooling water tank is suitable for containing cooling water, and one side of the cooling water tank is provided on the outer side of the mold roller and is in sealing and sliding cooperation with the outer side surface of the mold roller; The heat-insulating sealing plate is located inside the mold roller, and covers the inner side surface of the mold roller corresponding to the area where the heat-insulating box is covered, and the heat-insulating sealing plate is in sealing and sliding cooperation with the inner side surface of the mold roller; The heating sealing plate covers the inner side surface of the mold roller and is in sealing and sliding cooperation with the inner side surface of the mold roller. The heating sealing plate is located between the cooling water tank and the heat preservation box, and is suitable for heating the mold roller. The air extraction device is fixedly connected to the cooling water tank or the fixed bracket, and the air inlet of the air extraction device is communicated with the top space inside the cooling water tank; The central axis of the driving roller is parallel to the central axis of the mold roller and is arranged horizontally; The driving roller is located between the heating sealing plate and the heat insulating sealing plate, and the driving roller includes a rubber roller, which is pressed against the inner side surface of the mold roller corresponding to the cooling water tank cover area, and the outer side surface of the rubber roller is rollingly connected to the inner side surface of the mold roller.

2. The polyester chip granulating device according to claim 1, characterized in that: It also includes a cooling transition sealing plate, which covers the outer side of the mold roller and is sealed and slidably matched with the outer side of the mold roller. One side of the cooling transition sealing plate is arranged against the insulation box. The cooling transition sealing plate is located inside the cooling water tank and is located below the mold roller.

3. The polyester chip granulating device according to claim 2, characterized in that: It also includes a cleaning plate, which covers the outer side of the mold roller. The cleaning plate has bristles on the side close to the mold roller, and the ends of the bristles are pressed tightly against the outer side of the mold roller. The cleaning plate is located between the cooling water tank and the insulation box.

4. The polyester chip granulating device according to claim 3, characterized in that: It also includes an air blow gun, which is located outside the mold roller. The air blow port of the air blow gun is set toward the outer side of the mold roller. The position of the air blow port on the outer side of the mold roller is between the cleaning plate and the insulation box. The air outlet of the exhaust device is connected to the air inlet of the air blow gun through an air pipe.

5. The polyester chip granulating device according to claim 4, characterized in that: The outer side surface of the mold roller has a first boundary point, a second boundary point, a third boundary point, a fourth boundary point, a fifth boundary point, a sixth boundary point, a seventh boundary point, an eighth boundary point, and a ninth boundary point that are on the same cross-sectional plane and arranged in sequence along the circumferential direction; The center of the mold roller on the cross-sectional plane is a first center, and the center of the driving roller on the cross-sectional plane is a second center; A straight line passing through the first center of the circle and the first boundary point is a first straight line, a straight line passing through the first center of the circle and the second boundary point is a second straight line, a straight line passing through the first center of the circle and the third boundary point is a third straight line, a straight line passing through the first center of the circle and the fourth boundary point is a fourth straight line, a straight line passing through the first center of the circle and the fifth boundary point is a fifth straight line, a straight line passing through the first center of the circle and the sixth boundary point is a sixth straight line, a straight line passing through the first center of the circle and the seventh boundary point is a seventh straight line, a straight line passing through the first center of the circle and the eighth boundary point is an eighth straight line, and a straight line passing through the first center of the circle and the ninth boundary point is a ninth straight line; The two boundaries of the region where the heat preservation box is covered on the mold roller along the circumferential direction are respectively located on the second straight line and the ninth straight line; The two boundaries of the covering area of ​​the heat-insulating sealing plate on the mold roller along the circumferential direction are respectively located on the second straight line and the ninth straight line; The blowing port of the blowing gun is located between the second straight line and the third straight line on the outer side of the mold roller; The two boundaries of the covering area of ​​the cleaning plate on the mold roller along the circumferential direction are respectively located on the fourth straight line and the fifth straight line; The two boundaries of the covering area of ​​the heating sealing plate on the mold roller along the circumferential direction are respectively located on the fourth straight line and the sixth straight line; The second circle center is located on the seventh straight line; Two boundaries of the area where the water tank is covered on the mold roller along the circumferential direction are respectively located on the fifth straight line and the ninth straight line.

6. The polyester chip granulating device according to claim 5, characterized in that: The first straight line and the sixth straight line are arranged horizontally, and the fourth straight line and the eighth straight line are arranged vertically.

7. The polyester chip granulating device according to claim 6, characterized in that: The included angle between the second straight line and the first straight line is 45 degrees, the included angle between the second straight line and the third straight line is 22.5 degrees, the included angle between the third straight line and the fourth straight line is 22.5 degrees, the included angle between the fourth straight line and the fifth straight line is 45 degrees, the included angle between the fifth straight line and the sixth straight line is 45 degrees, the included angle between the sixth straight line and the seventh straight line is 45 degrees, the included angle between the seventh straight line and the eighth straight line is 45 degrees, the included angle between the eighth straight line and the ninth straight line is 45 degrees, and the included angle between the ninth straight line and the first straight line is 45 degrees.

8. The polyester chip granulating device according to any one of claims 5 to 7, characterized in that: The driving roller further includes a second rotating shaft, a fixed sleeve, and a gear. The second rotating shaft is rotatably connected to the fixed bracket. The second rotating shaft is parallel to the central axis of the mold roller. The fixed sleeve is sleeved on the second rotating shaft and fixedly connected to the second rotating shaft. The rubber roller is sleeved on the fixed sleeve and fixedly connected to the fixed sleeve. The gear is sleeved on the fixed sleeve and fixedly connected to the fixed sleeve. The driving device is drivingly connected to the second rotating shaft. End caps are fixedly connected to both ends of the mold roller, and the end caps are sealed with the ends of the mold roller. A first rotating shaft is fixedly connected to the center of the end caps. The first rotating shaft is parallel to the second rotating shaft. The first rotating shaft is rotatably connected to the fixed bracket. A gear ring is fixedly connected to the inner side surface of the mold roller. The gear ring is arranged around the first rotating shaft and is meshed with the gear for transmission connection. The mold roller has a construction section, which is located between the two ends of the mold roller along the axial direction of the mold roller. The gear ring is located on the outside between the two ends of the construction section, and the two ends of the rubber roller are located on the inside between the two ends of the construction section. The mold cavities are distributed on the inside between the two ends of the construction section. The two boundaries of the region where the heat preservation box is covered on the mold roller along the axial direction of the mold roller are respectively located outside between the two ends of the structural section; The two boundaries of the region where the cooling water tank is covered on the mold roller along the axial direction of the mold roller are respectively located outside between the two ends of the structural section.

9. The polyester chip granulating device according to claim 8, characterized in that: The driving device includes a motor, which is fixedly connected to the fixed bracket. A driving pulley is fixedly connected to the output shaft of the motor, and a driven pulley is fixedly connected to the end of the second rotating shaft. A transmission belt is wound around the driving pulley and the driven pulley, and the driving pulley and the driven pulley are connected through the transmission belt.

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