Drying device for plastic granulator

Abstract

The utility model relates to the technical field of plastic particle processing, in particular to a drying device for a plastic granulator, which comprises a drying box, and a conveying mechanism and a shifting mechanism are mounted in the drying box. A plurality of fixing rods are arranged in the water mechanism, so that plastic particles falling on water filtering plates are dispersed, the plastic particles are prevented from being gathered, the plastic particles make full contact with the water filtering plates for dehydration, and under the action of the two water filtering plates, the flowing path of the plastic particles in the vibration water removal process is prolonged; meanwhile, plastic particles on a water filtering plate are prevented from directly sliding into the drying box, it is guaranteed that the plastic particles are fully vibrated, meanwhile, under the action of a guide plate and two pieces of absorbent cotton, the plastic particles subjected to vibration water removal are wiped again and then guided into the drying box, water retention on the surfaces of the plastic particles is avoided, and the drying effect is improved. And therefore, water on the surfaces of the plastic particles fully falls off, and the drying uniformity and drying efficiency of the plastic particles are improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet processing technology, and in particular to a drying device for a plastic pelletizer. Background Technology

[0002] A plastic pelletizer is a type of plastic extrusion molding equipment. It heats the plastic raw material to a viscous state, and under pressure, it is continuously extruded through an extrusion die. The material is then cooled into strip-shaped glassy particles, which are then processed by a pelletizing device to obtain cylindrical or elliptical plastic pellets. Plastic pelletizing devices usually use water cooling. After pelletizing, a drying device is used to dry the plastic pellets to ensure their quality and stability.

[0003] A search revealed that the Chinese patent "A Drying Device for a Plastic Pelletizer" (authorization announcement number CN222538080U) involves pouring plastic pellets into a feeding hopper. A vibrating screen causes the plastic pellets to vibrate on a filter plate, causing them to bounce and dislodge water droplets from their surface to the bottom of the feeding hopper. A limiting plate, in conjunction with the filter plate, then feeds the plastic pellets onto a conveyor belt for drying. A motor, along with a belt, drives a transmission screw to rotate, controlling the movement of a moving rod, a turning rod, and a pushing rod. This movement agitates the plastic pellets on the conveyor belt and in the feeding hopper, improving the uniformity and efficiency of the drying process.

[0004] Although the vibration of the filter plate in the above application can cause water droplets to fall off the surface of the plastic particles, due to the inclined setting of the filter plate and the characteristics of the plastic particles themselves, the plastic particles will quickly slide onto the conveyor belt when they fall on the filter plate. This will result in some of the water on the surface of the plastic particles not being fully removed, which will still affect the uniformity and drying efficiency of the plastic particles during drying.

[0005] Therefore, a drying device for a plastic pelletizer is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a drying device for a plastic pelletizer to solve the above-mentioned problems. It improves the problem that when plastic pellets fall onto the filter plate, they quickly slide onto the conveyor belt, which results in some plastic pellets not being able to fully remove moisture from their surface, thus affecting the uniformity and drying efficiency of the plastic pellets during drying.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a drying device for a plastic pelletizer, comprising: a drying box, wherein a conveying mechanism and a feeding mechanism are installed inside the drying box, the feeding mechanism is disposed above the conveying mechanism, and a feeding box is fixedly connected to one side of the drying box; a dewatering mechanism, wherein the dewatering mechanism includes a vibrating motor fixedly connected to the bottom wall of the feeding box, the output shaft of the vibrating motor is fixedly connected to a mounting frame, two filter plates are fixedly connected to the inner wall of the mounting frame, the two filter plates are inclined, multiple fixing rods are fixedly connected to the top of the filter plates, a discharge port is opened on the lower surface of the filter plates, and a water receiving frame is fixedly connected to the bottom of the filter plates.

[0008] Preferably, the dewatering mechanism further includes a guide plate fixedly connected to the lower end of the inner wall of the mounting frame. The guide plate is inclined, and its lower end extends into the drying chamber. Two rotating shafts are rotatably connected to the lower end of the inner wall of the mounting frame. Absorbent cotton is fixedly connected to the surface of each rotating shaft and positioned above the guide plate. Using two absorbent cottons facilitates further wiping of the plastic granules after vibration dewatering, preventing moisture retention on the surface of the plastic granules. The two absorbent cottons also help to flatten the plastic granules sliding down the guide plate, ensuring they are evenly distributed on the conveyor belt for drying, thereby improving the drying effect of the plastic granules.

[0009] Preferably, one end of each of the two rotating shafts extends through the mounting frame and is fixedly connected to a pulley. A transmission belt connects the two pulleys. A first motor is fixedly connected to one side of the mounting frame, and the other end of one of the pulleys is fixedly connected to the output shaft of the first motor. This facilitates driving the two rotating shafts to synchronously rotate the corresponding absorbent cotton counterclockwise.

[0010] Preferably, a plurality of fixing blocks are fixedly connected to the top of the filter plate, and the overall shape of the fixing blocks is an isosceles triangle. This facilitates the dispersion of plastic particles that accumulate and slide off the filter plate.

[0011] Preferably, the bottom end of the water receiving frame is connected to a guide frame, and the other side of the mounting frame is fixedly connected to a collection frame. One end of each of the guide frames is connected to the collection frame. This facilitates the collection of water within the water receiving frame and prevents the water in the receiving frame from affecting the filter plate during vibration.

[0012] Preferably, the bottom of the guide frame forms an angle with the horizontal plane. This facilitates better flow of water from the guide frame into the collection frame.

[0013] Preferably, the surface of the fixing rod is curved into an arc shape, and multiple fixing rods are arranged in equal rows. This facilitates dividing the top of the filter plate into multiple areas of the same size.

[0014] The beneficial effects of this utility model are:

[0015] The aforementioned dewatering mechanism, by incorporating multiple fixed rods, facilitates the dispersion of plastic particles falling onto the filter plates, preventing particle aggregation and ensuring sufficient contact between the particles and the filter plates for dewatering. The action of the two filter plates also extends the flow path of the plastic particles during the vibration dewatering process, preventing them from sliding directly into the drying chamber and ensuring thorough vibration. Furthermore, the guide plate and two absorbent cotton pads facilitate wiping the dewatered plastic particles again before introducing them into the drying chamber, preventing surface moisture retention and ensuring complete removal of moisture. This improves the uniformity and efficiency of the drying process.

[0016] By setting up a water collection frame, it is beneficial to collect the water that falls off the plastic particles, preventing the water from falling onto the filter plate and guide plate below, thus ensuring the dehydration effect of the plastic particles. Under the action of the guide frame and collection frame, it is also beneficial to collect the water in the water collection frame, preventing the water in the water collection frame from affecting the filter plate during the vibration of the filter plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the feed box and drying box of this utility model;

[0019] Figure 3 This is a schematic diagram of the water removal mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the distribution structure of the filter plate and guide plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the guide frame and collection frame of this utility model.

[0022] In the diagram: 100, drying box; 200, conveying mechanism; 300, feeding mechanism; 400, feeding box; 500, dewatering mechanism; 510, mounting frame; 520, vibrating motor; 530, filter plate; 531, fixing rod; 532, discharge port; 533, fixing block; 540, water receiving frame; 541, guide frame; 550, guide plate; 560, rotating shaft; 561, absorbent cotton; 562, pulley; 563, transmission belt; 564, first motor; 570, collection frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In practical implementation: such as Figure 1-5 As shown, a drying device for a plastic pelletizer includes: a drying chamber 100, inside which a conveying mechanism 200 and a feeding mechanism 300 are installed, the feeding mechanism 300 being positioned above the conveying mechanism 200; a feeding box 400 being fixedly connected to one side of the drying chamber 100; and a dewatering mechanism 500, which includes a vibrating motor 520 fixedly connected to the bottom wall of the feeding box 400; an installation frame 510 fixedly connected to the output shaft of the vibrating motor 520; two filter plates 530 fixedly connected to the inner wall of the installation frame 510; the two filter plates 530 being inclined; multiple fixing rods 531 fixedly connected to the top of the filter plates 530; a discharge port 532 opened on the lower surface of the filter plates 530; and a water receiving frame 540 fixedly connected to the bottom of the filter plates 530.

[0025] In this embodiment, the conveying mechanism 200 includes two circular rollers rotatably connected to the inner wall of the drying chamber 100. A conveyor belt is connected between the two circular rollers. A second motor is fixedly connected to the front end of the drying chamber 100. The output shaft of the second motor is fixedly connected to one end of one of the circular rollers. When the device is running, the second motor is started by the controller, which drives the circular roller to rotate, thereby driving the conveyor belt to transmit plastic particles.

[0026] The feeding mechanism 300 includes a third motor fixedly connected to the front end of the drying chamber 100. The output shaft of the third motor passes through the drying chamber 100 and is fixedly connected to a reciprocating screw. A moving rod is installed on the surface of the reciprocating screw, and multiple equally arranged levers are fixedly connected to the bottom end of the moving rod. When the conveying mechanism 200 conveys the plastic granules, the controller starts the third motor to drive the reciprocating screw to rotate, thereby causing the moving rod to drive the multiple levers to turn the plastic granules on the conveyor belt. This method has the same function as in the original solution, so it will not be described in detail.

[0027] A hot air blower is installed at the top of the drying chamber 100. When drying plastic granules, the hot air blower is started by the controller to introduce hot air into the drying chamber 100 to dry the plastic granules on the conveyor belt.

[0028] When in use, the feed box 400 is installed with the plastic pelletizer, and the discharge port of the plastic pelletizer is connected to the feed box 400. The lower end of the upper filter plate 530 is placed above the higher end of the lower filter plate 530.

[0029] like Figure 3 and Figure 4 As shown, the dewatering mechanism 500 also includes a guide plate 550 fixedly connected to the lower end of the inner wall of the mounting frame 510. The guide plate 550 is inclined and its lower end extends into the drying chamber 100. Two rotating shafts 560 are rotatably connected to the lower end of the inner wall of the mounting frame 510. Water-absorbing cotton 561 is fixedly connected to the surface of the rotating shaft 560 and is positioned above the guide plate 550.

[0030] In this embodiment, the lower end of the lower filter plate 530 is positioned above the higher end of the guide plate 550. The lowest point of the lower end of the two absorbent cotton 561 surfaces is the same distance from the top of the guide plate 550. The spacing between the absorbent cotton 561 and the guide plate 550 does not affect the plastic particles from sliding down the inclined surface of the guide plate 550 into the drying chamber 100. The absorbent cotton 561 can deform. The lower end of the guide plate 550 is located above the conveyor belt.

[0031] like Figure 3 As shown, one end of each of the two rotating shafts 560 extends through the mounting frame 510 and is fixedly connected to a pulley 562. A transmission belt 563 is connected between the two pulleys 562. A first motor 564 is fixedly connected to one side of the mounting frame 510, and the other end of one of the pulleys 562 is fixedly connected to the output shaft of the first motor 564.

[0032] In this embodiment, when the device is running, the controller starts the first motor 564, causing the output shaft of the first motor 564 to drive one of the pulleys 562 to rotate counterclockwise. Under the action of the transmission belt 563, the two rotating shafts 560 drive the absorbent cotton 561 to rotate counterclockwise synchronously.

[0033] like Figure 4 As shown, multiple fixing blocks 533 are fixedly connected to the top of the filter plate 530, and the overall shape of the fixing blocks 533 is an isosceles triangle.

[0034] In this embodiment, multiple fixing blocks 533 are respectively installed between two adjacent fixing rods 531. When plastic particles slide down from the inclined plane between two adjacent fixing rods 531, the fixing blocks 533 will disperse the plastic particles that have gathered and slid down.

[0035] like Figure 5As shown, the bottom end of the water receiving frame 540 is connected to a guide frame 541, and the other side of the mounting frame 510 is fixedly connected to a collection frame 570. One end of each guide frame 541 is connected to the collection frame 570. The bottom end of the guide frame 541 forms an angle with the horizontal plane.

[0036] In this embodiment, the guide frame 541 is installed below the lower end of the water receiving frame 540. When the aqueous solution falls into the water receiving frame 540, the aqueous solution will slide down the slope of the water receiving frame 540 into the guide frame 541 and enter the collection frame 570, thereby collecting the removed water.

[0037] like Figure 3 and Figure 4 As shown, the surface of the fixing rod 531 is curved into an arc shape, and multiple fixing rods 531 are distributed in equal rows.

[0038] In this embodiment, multiple fixing rods 531 divide the top of the filter plate 530 into multiple areas of the same size.

[0039] In use, the granulated plastic pellets enter the feed hopper 400 and fall onto the upper filter plate 530. Multiple fixing rods 531 disperse the plastic pellets on the filter plate 530. Simultaneously, the controller starts the vibration motor 520, which, through the mounting frame 510, continuously vibrates the two filter plates 530 and the guide plate 550. During vibration, the plastic pellets on the upper filter plate 530 slide down its inclined surface to the discharge port 532 and fall to the higher end of the inclined surface of the lower filter plate 530. They then fall along the inclined surface of the lower filter plate 530 and the discharge port 532 onto the guide plate 550. As the plastic pellets move on the two filter plates 530, moisture on the surface of the plastic pellets is removed during vibration and falls through the filter plates 530 into the water collection frame 540. Inside, while vibrating, the controller starts the first motor 564 to run. Under the action of two pulleys 562, transmission belt 563 and two rotating shafts 560, the two absorbent cottons 561 will rotate counterclockwise synchronously. When the plastic particles fall on the guide plate 550 and slide down the inclined surface of the guide plate 550 onto the conveyor belt, the plastic particles will pass through the gap between the absorbent cotton 561 and the guide plate 550. During the process of passing through, the absorbent cotton 561 will contact the surface of the plastic particles, so that the two absorbent cottons 561 will wipe the surface of the plastic particles in turn. When the plastic particles pass through the gap between the absorbent cotton 561 and the guide plate 550 and slide down onto the conveyor belt, the absorbent cotton 561 will flatten the plastic particles, so that the plastic particles are evenly spread on the conveyor belt for conveying and drying.

[0040] The reciprocating screw is characterized by two threaded grooves with the same pitch but opposite directions, connected at both ends by a transition curve. The rotation of the reciprocating screw causes the side of the helical groove to push the slider placed in the helical groove to perform axial reciprocating motion.

[0041] It should be noted that the motors, hot air blowers, etc. mentioned above are all components with relatively mature existing technologies. Specific models can be selected according to actual needs. At the same time, the motors and hot air blowers can be powered by built-in power supplies or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drying device for a plastic pelletizer, characterized by, include: A drying box (100) is provided with a conveying mechanism (200) and a feeding mechanism (300) installed inside the drying box (100). The feeding mechanism (300) is located above the conveying mechanism (200). A feeding box (400) is fixedly connected to one side of the drying box (100). A water removal mechanism (500) includes a vibrating motor (520) fixedly connected to the bottom wall of the feed box (400). The output shaft of the vibrating motor (520) is fixedly connected to a mounting frame (510). Two filter plates (530) are fixedly connected to the inner wall of the mounting frame (510). The two filter plates (530) are inclined. Multiple fixing rods (531) are fixedly connected to the top of the filter plates (530). A discharge port (532) is opened on the lower surface of the filter plates (530). A water receiving frame (540) is fixedly connected to the bottom of the filter plates (530).

2. The drying device for plastic pelletizer according to claim 1, characterized in that: The dewatering mechanism (500) also includes a guide plate (550) fixedly connected to the lower end of the inner wall of the mounting frame (510). The guide plate (550) is inclined and the lower end of the guide plate (550) extends into the drying chamber (100). Two rotating shafts (560) are rotatably connected to the lower end of the inner wall of the mounting frame (510). Water-absorbing cotton (561) is fixedly connected to the surface of the rotating shaft (560) and the water-absorbing cotton (561) is located above the guide plate (550).

3. The drying device for plastic pelletizer according to claim 2, characterized in that: One end of each of the two rotating shafts (560) passes through the mounting frame (510) and is fixedly connected to a pulley (562). A transmission belt (563) is connected between the two pulleys (562). A first motor (564) is fixedly connected to one side of the mounting frame (510), and the other end of one of the pulleys (562) is fixedly connected to the output shaft of the first motor (564).

4. The drying device for plastic pelletizer according to claim 1, characterized in that: The top of the filter plate (530) is fixedly connected to a plurality of fixing blocks (533), and the overall shape of the fixing blocks (533) is an isosceles triangle.

5. The drying device for plastic pelletizer according to claim 1, characterized in that: The bottom end of the water receiving frame (540) is connected to the guide frame (541), and the other side of the mounting frame (510) is fixedly connected to the collection frame (570). One end of each of the two guide frames (541) is connected to the collection frame (570).

6. A drying device for a plastic pelletizer according to claim 5, characterized in that: The bottom of the guide frame (541) forms an angle with the horizontal plane.

7. The drying device for plastic pelletizer according to claim 1, characterized in that: The surface of the fixing rod (531) is curved into an arc shape, and multiple fixing rods (531) are distributed in equal rows.

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