A polyester chip drier

Abstract

The utility model provides a kind of polyester chip dryer, including the machine body being vertically arranged, the machine body is sequentially equipped with inlet, scattering roller, drying assembly and screening assembly and material holding drawer from top to bottom, the side of scattering roller is also equipped with first motor drive connection scattering roller, the drying assembly includes the heating plate being horizontally arranged in the area below scattering roller, the heating plate is horizontally fixed on the inner wall of machine body, and a plurality of through slots are also arranged on the heating plate, the top surface of the heating plate is also raised to form the inclined slope towards the direction of scattering roller, the low end of the inclined slope extends to the edge of through slot, and the horizontal discharging roller is also rotationally arranged in the through slot along the extension direction of through slot, the utility model solves the problem that polyester chip is dried, because polyester chip is formed into group, often external is dried, while polyester chip located in the interior of polyester particle group is still in wet state, thereby affecting the final drying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of polyester chip production equipment, specifically to a polyester chip dryer. Background Technology

[0002] Polyester is a polymer compound. It is polyethylene terephthalate produced by the polycondensation of terephthalic acid and ethylene glycol, while polyester chips are made by underwater pelletizing of polyethylene terephthalate.

[0003] Polyester chips are typically sheet-like granules measuring approximately 4*5*2 mm. They are generally packaged and sold in chip form. During polyester production, after the crystallized polyester product is underwater-cut into chips, it needs to be dried before packaging to prevent the polyester material from denaturing due to prolonged contact with moisture. However, during the actual slicing process, the underwater-cut polyester chips often adhere tightly to each other due to water surface tension, forming clumps of polyester particles. During drying, because the polyester particles are clumped together, the outer layers often dry while the inner layers remain moist, thus affecting the final drying efficiency. Therefore, a better drying equipment is needed to solve this problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a polyester chip dryer. It uses a dispersing roller to break up clumps of polyester chips, followed by drying using a heating plate below the roller. The heating plate contains reciprocatingly bent heating tubes that act as a heat source, avoiding the through-groove area. A heat-conducting material is placed in the space between the heating tubes and the heating plate, allowing the entire heating plate to dissipate heat. This ensures that the polyester chips can be dried regardless of where they fall onto the heating plate, solving the problem of low drying efficiency for clumps of polyester chips in existing drying devices.

[0005] According to an embodiment of this utility model, a polyester chip dryer includes a vertically arranged body. From top to bottom, the body is sequentially provided with a feed inlet, a dispersing roller, a drying assembly, a screening assembly, and a material drawer. A first motor drives and connects to the dispersing roller on its side. The drying assembly includes a heating plate horizontally disposed below the dispersing roller. The heating plate is horizontally fixed to the inner wall of the machine body. Several through slots are arranged side-by-side on the heating plate. The top surface of the heating plate protrudes towards the dispersing roller, forming an inclined slope. The lower end of the slope extends to the edge of the through slots. The drying assembly also includes a horizontal feeding roller that rotates along the extension direction of the groove. One end of the feeding roller passes through the end of the groove and extends to the outside of the heating plate. A second motor and a transmission assembly are also provided on one side of the drying assembly. The second motor drives the feeding roller to rotate horizontally through the transmission assembly. The transmission assembly includes a horizontally arranged connecting shaft and multiple gear steering knuckles fixedly arranged on the connecting shaft.

[0006] The screening component includes a screen that is inclinedly arranged below the drying component. A discharge port is also provided on the side wall of the machine body at the lower end of the screen. The lower end of the screen extends out of the machine body and is connected to the discharge port. The material drawer is located in the area below the bottom of the screen and is slidably arranged in the bottom area of ​​the machine body, and can slide out of the machine body.

[0007] The technical principle of this utility model is as follows: A clump of polyester granules is fed into the inlet, where a dispersing roller breaks the granules into individual pieces, facilitating subsequent drying. The granular polyester chips fall from below the dispersing roller onto the heating plate of the drying assembly. The heating plate first heats the polyester chips, quickly evaporating the moisture. Because the top surface area between the slots on the heating plate is convex upwards and inclined, with the slope facing the slots, a rotating feed roller is installed inside the slots to prevent the polyester chips from falling out of the heating plate before the moisture has evaporated. This feed roller prevents a large number of polyester chips from sliding down rapidly. Simultaneously, as the feed roller rotates, it gradually feeds the polyester chips gathered above the slots onto the screen below. Coarser polyester chips exit from the outlet, while finer polyester chips pass through the screen and are collected in the storage drawer, thus completing the dispersing and drying process of the polyester chips.

[0008] This utility model has the following beneficial effects:

[0009] This polyester chip dryer utilizes two opposing, toothed, dispersing rollers to thoroughly disperse the polyester chips during drying. The chips fall through the gaps between the teeth, resulting in a relatively uniform and even descent. Upon impact with the heating plate, the chips are immediately dried by the heat dissipation. Because the heating plate has a raised ramp between two slots, the chips don't actually stay on it but slide slowly down the ramp. However, the dispersing rollers within the slots prevent rapid slippage, thus allowing the chips to escape through the gap between the discharge roller and the slot. The polyester chips slide through the gap, and during this process, they are dried again by the inner wall of the trough before falling into the screen. When the polyester chips accumulate on the heating plate, the feeding roller in the trough can rotate under the drive of a second motor, which agitates the polyester chips to accelerate their fall. This prevents the polyester chips that first come into contact with the heating plate from overheating because they do not have enough time to fall between the feeding roller and the trough. Compared with existing devices that directly dry the chips, this polyester chip dryer can fully break up the polyester chips before drying them, and it can continuously feed the chips for drying, thus improving the drying efficiency of the polyester chips. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0011] Figure 2 This is a structural diagram of the dispersing roller of this utility model.

[0012] Figure 3 This is a structural diagram of the drying component of this utility model.

[0013] Figure 4 This is a diagram showing the distribution of the heating tube structure inside the heating plate of this utility model.

[0014] Figure 5 This is a schematic diagram of the structure of the two heating plates inside the body of this utility model.

[0015] In the above attached figures:

[0016] 1. Machine body; 11. Feed inlet;

[0017] 2. Dispersing roller; 21. First motor; 22. Gear; 23. Fixing bar; 24. Paddle; 25. Toothed plate;

[0018] 3. Heating plate; 31. Thermally conductive material; 32. Inclined slope; 33. Heating tube; 34. Through groove; 35. Feeding roller; 351. Convex tooth; 36. Heating device; 37. Second motor; 38. Connecting shaft; 39. Gear steering knuckle;

[0019] 4. Screen; 41. Discharge port; 42. Third motor; 43. Cam; 44. Guide plate;

[0020] 5. Material storage drawer; Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, a polyester chip dryer includes a vertically arranged body 1. From top to bottom, the body 1 is provided with a feed inlet 11, a dispersing roller 2, a drying assembly, a screening assembly, and a material drawer 5. A first motor 21 is also provided on the side of the dispersing roller 2 to drive and connect to it. The drying assembly includes a heating plate 3 horizontally arranged below the dispersing roller 2. The heating plate 3 is horizontally fixed on the inner wall of the body 1. Several through grooves 34 are arranged side-by-side on the heating plate 3. The top surface of the heating plate 3 also protrudes 351 towards the dispersing roller 2, forming an inclined slope 32. The lower end of 2 extends to the edge of the through groove 34. A horizontal feeding roller 35 is rotatably provided in the through groove 34 along the extension direction of the through groove 34. One end of the feeding roller 35 passes through the end of the through groove 34 and extends through to the outside of the heating plate 3. A sealing ring can also be provided at the position where the feeding roller 35 is rotatably connected to the heating plate 3 to prevent the polyester sheet from sticking to the toothed plate 25 due to moisture. A second motor 37 and a transmission component provided on the second motor 37 are also provided on one side of the drying component. The second motor 37 drives the feeding roller 35 to rotate horizontally through the transmission component.

[0023] The screening component includes a screen 4 that is inclinedly arranged below the drying component. The side wall of the machine body 1 is also provided with a discharge port 41 at the lower end of the screen 4. The lower end of the screen 4 extends out of the machine body 1 and is connected to the discharge port 41. The material drawer 5 is located in the area below the bottom of the screen 4 and is slidably arranged in the bottom area of ​​the machine body 1, and can slide out of the machine body 1.

[0024] Through the aforementioned mechanism, during the drying of polyester chips, clumps of polyester granules are fed into the feed inlet 11. The dispersing roller 2 breaks down these granules into individual pieces, facilitating subsequent drying. The granular polyester chips fall from below the dispersing roller 2 onto the heating plate 3 of the drying assembly. The heating plate 3 first heats the polyester chips, rapidly evaporating the moisture. Because the top surface area between the channels 34 on the heating plate 3 is convex upwards 351, forming an inclined slope 32, with the lower end of the slope 32 facing the channels 34... To prevent polyester chips from falling out of the heating plate 3 before the moisture has evaporated, a rotating feed roller 35 is installed inside the through groove 34 to prevent a large number of polyester chips from sliding down too quickly. At the same time, when the feed roller 35 rotates, it will gradually feed the polyester chips gathered above the through groove 34 into the screen 4 below at a uniform speed. The coarser polyester chips slide off the inclined screen 4 and leave through the discharge port 41, while the finer polyester chips pass through the screen 4 and are collected in the material drawer 5, thus completing the work of breaking up and drying the polyester chips.

[0025] Furthermore, such as Figure 1 and Figure 2 As shown, the dispersing roller 2 has two rollers arranged side by side at the bottom of the feed inlet 11. Several toothed plates 25 are evenly distributed on the dispersing roller 2. The toothed plates 25 on the two dispersing rollers 2 are arranged opposite each other and can disperse the clumps of polyester chips. Fixing strips 23 are also fixed on the side walls of the machine body 1 corresponding to the outer sides of the two dispersing rollers 2. Several paddles 24 are arranged in a straight line on the fixing strips 23. The paddles 24 are arranged alternately with the toothed plates 25. By setting the fixing strips 23 parallel to the dispersing roller 2 on the side wall of the machine body 1 and setting the paddles 24 on the fixing strips 23, when the dispersing roller 2 rotates, wet polyester chips inevitably adhere to the toothed plates 25. Therefore, the paddles 24 are needed to agitate the polyester chips and make them fall off.

[0026] Furthermore, such as Figure 2 As shown, a gear 22 is also provided at the other end of the dispersing roller 2. The gears 22 provided at the ends of the two dispersing rollers 2 belong to the same side and mesh with each other. The two dispersing rollers 2 rotate towards each other under the drive of the first motor 21. The motor drives one of the dispersing rollers 2 by reducing the speed through a reduction mechanism, such as an existing reduction gear set. The two dispersing rollers 2 are connected by the gear 22 at the other end and rotate towards each other.

[0027] Furthermore, such as Figure 1As shown, a guide plate 44 is also fixedly provided in the area above the lower end of the screen 4. The guide plate 44 is inclined and the lower end of the guide plate 44 extends to the higher side of the screen 4. In order to prevent some polyester chips from falling into the position near the discharge port 41 when they fall from the channel 34, the guide plate 44 is provided in the area above the lower part of the screen 4. In this way, no matter which channel 34 the polyester chips fall from, they will be guided to the higher side of the screen 4 by the guide plate 44.

[0028] Furthermore, such as Figure 1 As shown, the bottom of the lower end of the screen 4 overlaps with the bottom edge of the discharge port 41. A horizontal third motor 42 is provided on the inner wall of the machine body 1 located at the discharge port 41. The third motor 42 also includes a cam 43 vertically fixed on the output end. The axis of the cam 43 is not coaxial with the third motor 42. The bottom of the screen 4 overlaps on the cam 43. The screen 4 vibrates up and down when the cam 43 rotates. By using the cam 43, which is not coaxial with the third motor 42, the cam 43 can vibrate the screen 4 up and down when it rotates. At the same time, the bottom of the higher side of the screen 4 can be hinged to the inner wall of the machine body 1. The existing hinge-like structure is used for rotational connection to cooperate with the screen 4 to vibrate.

[0029] Furthermore, such as Figure 2 and Figure 3 As shown, the drying assembly also includes a heating device 36 disposed on the outer wall of the body 1 and heating tubes 33 extending from the heating device 36 and embedded in the heating plate 3. The heating tubes 33 are distributed in the heating plate 3, avoiding the position of the through groove 34 and reciprocatingly bent. When the heating tubes 33 are bent, the through groove 34 can be placed between the bent heating tubes 33, so that the positions of the through groove 34 and the heating tubes 33 do not affect each other. The heating plate 3 is also provided with a heat-conducting material 31. The heating material can be a filled type of heat-conducting material 31. The heating method adopts the existing heat conduction method of heat distribution tube. The heating device 36 has a heat source to heat the liquid inside the heating tubes 33. The liquid inside the heating tubes 33 moves from the higher temperature to the lower temperature, and the heat-conducting material 31 in the heating plate 3 absorbs the heat of the heating tubes 33 and then disperses it to the entire heating plate 3, so as to quickly heat the polyester chips.

[0030] Furthermore, such as Figure 2 and Figure 3 as well as Figure 5As shown, the through groove 34 has three sections, and the feeding roller 35 has three sections. A gap is left between the outer wall of the feeding roller 35 and the inner wall of the through groove 34. The curvature of the inner wall of the through groove 34 corresponds to the curvature of the outer wall of the feeding roller 35. When the polyester cutting edge passes through this curved area, it can slow down the passing speed while continuing to be heated by the heating plate 3. One end of the rotating shaft at the center of the feeding roller 35 extends to the heating plate 3, then passes through the inner wall of the machine body 1 and extends to the outside of the machine body 1. Its end is connected to a gear steering knuckle 39 at a corresponding position. The internal structure of the gear steering knuckle 39 is a meshing bevel gear or helical gear structure, and its function is to power the second motor 37. After the power transmission direction at the output end is changed, it can be transmitted to the rotating shaft end of the feed roller 35. The second motor 37 is fixedly installed on the outer wall of the machine body 1. The transmission assembly includes a horizontally arranged connecting shaft 38 and multiple gear steering knuckles 39 fixedly installed on the connecting shaft 38. The output end of the second motor 37 is connected to the gear steering knuckles 39 at the corresponding positions. The second motor 37 drives the gear steering knuckles 39 at the ends of each feed roller 35 and drives the feed roller 35 to rotate through the gear steering knuckles 39 and the horizontally arranged connecting shaft 38. The connecting shaft 38 can also drive multiple feed rollers 35 by connecting multiple gear steering knuckles 39.

[0031] And as Figure 5 As shown, a second heating plate 3 can be provided. Simultaneously, a second motor 37 can also be provided to drive the feed roller 35 within the second heating plate 3. Alternatively, a gear steering knuckle 39 can be used to connect the second motor 37 that drives the feed roller 35 within the first heating plate 3 for transmission. Figure 5 As shown, a vertical connecting shaft 38 is provided to drive one of the gear steering knuckles 39 of the second heating plate 3 to the end of the second motor 37 or other gear steering knuckles 39. In this way, the two heating plates 3 can dry the polyester chips more thoroughly and prevent the surface moisture of the polyester chips from not evaporating completely.

[0032] Furthermore, such as Figure 2 and Figure 3 As shown, the surface of the feeding roller 35 is also provided with a number of protruding teeth 351. The protruding teeth 351 can slow down the speed at which the polyester chips slide down from the through groove 34. In order to prevent damage to the polyester chips, the material of the protruding teeth 351 can be a softer material, such as plastic or rubber.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A polyester chip dryer, characterized in that: The machine includes a vertically arranged body, which, from top to bottom, is provided with a feed inlet, a dispersing roller, a drying assembly, a screening assembly, and a material drawer. The side of the dispersing roller is also provided with a first motor driving and connecting one end of the dispersing roller. The drying assembly includes a heating plate horizontally arranged in the area below the dispersing roller. The heating plate is horizontally fixed on the inner wall of the machine body, and several through slots are arranged side-by-side on the heating plate. The top surface of the heating plate protrudes towards the dispersing roller, forming an inclined slope. The lower end of the slope extends to the edge of the through slot. A horizontal feeding roller is rotatably arranged within the through slot along its extension direction. One end of the feeding roller passes through the end of the through slot and extends through to the outside of the heating plate. A second motor and a transmission assembly are also provided on one side of the drying assembly. The second motor drives and connects to the feeding roller through the transmission assembly, driving the feeding roller to rotate horizontally. The screening component includes a screen that is inclinedly arranged below the drying component. The side wall of the machine body is also provided with a discharge port at the lower end of the screen. The lower end of the screen extends out of the machine body and is connected to the discharge port. The material drawer is located in the area below the bottom of the screen and is slidably arranged in the bottom area of ​​the machine body, and can slide out of the machine body.

2. The polyester chip dryer as described in claim 1, characterized in that: The dispersing rollers are provided in two parallel positions at the bottom of the feed inlet. Several toothed plates are evenly distributed on the dispersing rollers. The toothed plates on the two dispersing rollers are arranged opposite each other and are staggered. Fixing strips are also fixed on the outer side walls of the machine body corresponding to the two dispersing rollers. Several paddles are arranged in a straight line on the fixing strips. The paddles are staggered with the toothed plates.

3. The polyester chip dryer as described in claim 1, characterized in that: The other end of the dispersing roller is also provided with a gear. The gears at the ends of the two dispersing rollers belong to the same side and mesh with each other. The two dispersing rollers rotate in opposite directions under the drive of the motor.

4. The polyester chip dryer as described in claim 1, characterized in that: A guide plate is also fixedly provided in the area above the lower end of the screen, and the guide plate is inclined towards the screen.

5. A polyester chip dryer as described in claim 1, characterized in that: The bottom of the lower end of the screen overlaps with the bottom edge of the discharge port. A third motor is horizontally installed on the inner wall of the machine body located at the discharge port. The third motor also includes a cam vertically fixed on the output end. The bottom of the screen overlaps on the cam, and the higher top side is hinged to the inner wall of the machine body. When the cam rotates, it continuously vibrates the screen up and down.

6. A polyester chip dryer as described in claim 1, characterized in that: The drying assembly also includes a heating device disposed on the outer wall of the machine body and heating pipes extending from the heating device and embedded in the heating plate. The heating pipes are distributed in the heating plate in a reciprocating bending state, avoiding the through slot. The heating plate is also provided with heat-conducting material.

7. A polyester chip dryer as described in claim 1, characterized in that: The machine has three through slots and three feeding rollers. There is a gap between the outer wall of the feeding roller and the inner wall of the through slot. One end of the feeding roller extends to the outside of the machine body. The transmission assembly includes a horizontally arranged connecting shaft and multiple gear steering knuckles fixedly arranged on the connecting shaft. The end of the feeding roller is connected to the gear steering knuckle at the corresponding position. The second motor is fixedly arranged on the outer wall of the machine body. The output end of the second motor is connected to the gear steering knuckle at the corresponding position. The second motor drives the gear steering knuckle at the end of each feeding roller and drives the feeding roller to rotate through the gear steering knuckle and the horizontally arranged connecting shaft.

8. A polyester chip dryer as described in claim 1, characterized in that: The surface of the feeding roller is also provided with several protruding teeth.

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