Circulating water purification device for granulator

Abstract

The utility model relates to the technical field of plastic production, and particularly discloses a granulator circulating water purification device which comprises a water tank, a motor, a confluence groove, a collecting groove, a rotating shaft, a scraper, a water inlet, a water outlet, a transparent observation window, universal wheels, a controller, a water level sensor and an air blower. According to the scheme, gas blown out of the first air outlet is used for driving plastic chippings in the water tank to move upwards, then a scraping piece is arranged on a rotating shaft of the motor, the scraping piece rotates through rotation of the motor, and the plastic chippings on the water surface are scraped to a confluence groove; plastic chippings far away from the scraping plate are blown to the scraping plate through the second air outlet parallel to the water surface so that the plastic chippings can enter the confluence groove more easily, the plastic chippings are collected through the collecting groove at the tail end of the confluence groove, and the problem that in an existing device, the plastic chippings floating on the cooling water surface are difficult to discharge as soon as possible is solved.

Description

Technical Field

[0001] This solution belongs to the technical field of plastic manufacturing, and specifically relates to a circulating water purification device for a pelletizer. Background Art

[0002] A plastic pelletizer is a professional device used to cut plastic strips or sheets after extrusion or cooling and forming into particles of specified sizes. It is usually located at the end of a plastic extrusion production line and is responsible for precisely cutting the continuously extruded plastic products into uniform small particles after cooling and hardening, making them convenient for storage, transportation, and subsequent reprocessing.

[0003] During use, to prevent the cut plastic particles from sticking, underwater pelletizing is usually carried out. The invention patent with the publication number CN104908173A discloses a circulating water tank for a pelletizer. By setting up multiple partitions in the tank to layer and isolate the plastic debris in the cooling water, making it float on the water surface, and finally discharging it from the tank through the overflow trough with the water flow, the purification and circulation of the cooling water are realized. However, this device has certain defects, that is, the plastic debris floating on the water surface is very difficult to be discharged as soon as possible only by its own floating effect without the action of external objects. The long-existing plastic debris and powder are prone to form a mucus layer, reducing the cooling effect of the circulating water and even blocking the pipeline, affecting the pelletizing efficiency.

[0004] Therefore, it is necessary to design a device that can discharge the floating plastic debris as soon as possible. Utility Model Content

[0005] The purpose of this solution is to provide a circulating water purification device for a pelletizer to solve the problem that it is difficult to discharge the plastic debris floating on the cooling water surface as soon as possible.

[0006] To achieve the above purpose, this solution provides a circulating water purification device for a pelletizer, including:

[0007] A water tank, which is placed on the ground, and the water tank wall is provided with a water inlet and a water outlet, and a water inlet valve and a water outlet valve are respectively arranged at the water inlet and the water outlet;

[0008] A motor, which is fixed on the water tank, and the output shaft of the motor is at the same height as the water surface of the water tank;

[0009] A confluence trough, which is fixed on one side of the water tank;

[0010] A collection trough, which is fixed at the end of the confluence trough;

[0011] A rotating shaft, which is fixedly connected to the output shaft of the motor;

[0012] A scraping blade, which is fixed on the rotating shaft along the length direction of the rotating shaft, and the rotation direction is from the center of the water tank to the side of the confluence trough;

[0013] The principle and technical effect of this solution are as follows:

[0014] During operation, first open the water inlet to add enough cooling water to the water tank. Then, let the plastic particles cut by the pelletizer enter the cooling water tank. At this time, a large amount of plastic debris and powder will enter the tank together. Since the plastic debris and powder are lighter in weight, they will float on the water surface. Then, start the motor. Since the scraping blade and the rotating shaft are fixed on the output shaft of the motor, the scraping blade will rotate under the action of the motor. Also, because the output shaft of the motor is at the same height as the water surface, when the scraping blade rotates, it will stir the plastic debris and powder floating on the water surface. Since the rotation direction of the scraping blade is from the center of the tank to the side of the confluence trough, it can continuously push the plastic debris and powder floating on the water surface towards the confluence trough. Then, the plastic powder in the confluence trough will flow into the collection trough at the end, so that the plastic debris and powder floating on the water surface can be removed as soon as possible. The cooling water without plastic debris at the lower layer is discharged through the water outlet, and after treatment, it re-enters through the water inlet to realize the recycling of the cooling water.

[0015] This solution solves the problem that it is difficult to quickly discharge the plastic debris on the cooling water surface by setting a motor and a scraping blade rotating with it, and using the kinetic energy of the rotating scraping blade to scrape away the plastic debris and powder floating on the water surface.

[0016] Furthermore, a filter plate is provided on the water outlet.

[0017] When the cooling water is discharged through the water outlet, the filter plate will filter out the residual plastic debris in the water, ensuring that the cooling water entering the circulation system is clean and free of impurities, and preventing the impurities from polluting the water tank again. This reduces the equipment maintenance frequency and improves the efficiency of the entire cooling circulation system.

[0018] Furthermore, universal wheels are provided at the bottom of the water tank.

[0019] Through the above operation, the water tank can be conveniently moved within the working area through the universal wheels, improving the flexibility and working efficiency of the equipment.

[0020] Furthermore, the confluence trough is "V"-shaped, and a slope is provided on the side of the confluence trough close to the water surface, and the front end of the slope is immersed in the water.

[0021] Through the above operation, the "V"-shaped confluence trough can more effectively converge and guide the plastic debris and powder on the water surface. The slope provided on the side close to the water surface helps the debris enter the confluence trough, and the fact that the front end of the slope is immersed in the water ensures that even under fluctuating water levels, good debris collection efficiency can be maintained, preventing the debris from being re-dispersed onto the water surface due to water flow disturbance.

[0022] Further, a blower is fixed below the water tank. The blower is provided with a first air outlet which extends into the water tank from the bottom of the water tank, and a one-way valve is provided at the first air outlet.

[0023] Through the above operation, the gas blown out by the blower will emerge from the bottom of the water tank in the form of bubbles. A large number of bubbles move upward. When the bubbles come into contact with the plastic debris on the water surface, they will adhere to the lower part of the plastic debris. Due to the buoyancy of the bubbles, the plastic debris will float to the water surface faster. At the same time, the plastic debris with bubbles attached to the bottom is also more likely to move towards the confluence trough under the action of the scraper.

[0024] Further, the blower is also provided with a second air outlet which is fixed on the side of the water tank surface away from the confluence trough. The air outlet is at the same height as the water surface, and the blowing direction is parallel to the water surface and points to the scraper.

[0025] Through the above operation, the wind blown out by the blower can blow the plastic debris floating on the water surface on the side away from the confluence trough towards the scraper, so that the scraper can more effectively contact and push these debris when rotating, prompting them to be guided to the confluence trough faster. This design utilizes the auxiliary effect of the wind force, enhances the cleaning effect of the scraper, ensures that the plastic debris in all corners of the water tank can be collected in time, and improves the working efficiency and cleanliness of the entire purification device.

[0026] Further, the motor is a variable-frequency motor, and a controller is fixed on the water tank. The variable-frequency motor is electrically connected to the controller.

[0027] The variable-frequency motor enables the staff to adjust the speed of the motor through the controller according to the actual situation, thereby controlling the working intensity of the scraping blade. When there is more plastic debris, the speed can be increased to accelerate the cleaning speed; when there is less debris, the speed can be reduced to save energy. This adjustment method not only improves the adaptability of the equipment but also optimizes the energy utilization efficiency.

[0028] Further, a transparent observation window is provided on the side of the water tank, which is convenient for observing the internal situation of the water tank.

[0029] The setting of the transparent observation window enables the staff to check the water quality condition and the distribution of plastic debris inside the water tank at any time, so as to adjust the power of the blower and the motor in time or perform necessary maintenance operations.

[0030] Further, the collection trough is of a detachable structure.

[0031] When the plastic debris and powder in the collection trough accumulate to a certain extent, the staff can remove the collection trough from the water tank system for cleaning. This not only simplifies the cleaning process, improves the working efficiency, but also avoids problems such as blockage or overflow caused by long-term accumulation.

[0032] Further, a water level sensor is fixed on the inner wall of the water tank, the controller is electrically connected to the water level sensor, and the controller is also electrically connected to the water inlet valve and the water outlet valve.

[0033] The water level sensor can monitor the water level height in the water tank in real time and transmit the detected data to the controller in real time. When the water level is too low, the controller increases the water inlet valve and decreases the water outlet valve to increase the water inflow. When the water level is too high, vice versa, so as to ensure that the water level in the water tank is always at the same height as the scraper, so that the plastic debris floating on the water surface can be better removed. Brief Description of the Drawings

[0034] Figure 1 It is the front view of the circulating water purification device of the pelletizer.

[0035] Figure 2 It is the top view of the circulating water purification device of the pelletizer.

[0036] Figure 3 It is the schematic diagram of the confluence trough.

[0037] The following is a more detailed description through specific embodiments:

[0038] The reference numerals in the drawings of the specification include: water tank 1, motor 2, rotating shaft 3, scraper 4, confluence trough 5, collection trough 6, water inlet 7, water outlet 8, universal wheel 9, blower 10, first air outlet 11, second air outlet 12, transparent observation window 13, water level sensor 14, controller 15. Specific Embodiments

[0039] The embodiment is basically as shown in the attached Figure 1 figures: A circulating water purification device for a pelletizer, comprising:

[0040] A water tank 1, the water tank is placed on the ground, and a water inlet 7 and a water outlet 8 are provided on the water tank wall, and a water inlet valve and a water outlet valve are respectively provided at the water inlet and the water outlet;

[0041] A motor 2, the motor is a variable-frequency motor, fixed on the water tank, and the output shaft of the motor is at the same height as the water surface of the water tank;

[0042] A confluence trough 5, the confluence trough is fixed on one side of the water tank, the confluence trough is "V"-shaped, and a slope is provided on the side of the confluence trough close to the water surface, and the front end of the slope is immersed in the water;

[0043] A collection trough 6, the collection trough is fixed at the end of the confluence trough;

[0044] A rotating shaft 3, the rotating shaft is fixedly connected to the output shaft of the motor;

[0045] A scraper 4, the scraper is fixed on the rotating shaft along the length direction of the rotating shaft, and the rotation direction is from the center of the water tank to the side of the confluence trough;

[0046] A filter plate (not shown) is fixed inside the water outlet.

[0047] Universal wheels 9 are provided at the bottom of the water tank.

[0048] A blower 10 is fixed below the water tank. The blower is provided with a first air outlet 11 which extends into the water tank from the bottom of the water tank. A one-way valve is provided at the first air outlet. The blower is also provided with a second air outlet 12 which is fixed on one side of the water tank surface away from the confluence trough. The air outlet is at the same height as the water surface, and the blowing direction is parallel to the water surface and points to the scraper.

[0049] A transparent observation window 13 is provided on the side wall of the water tank.

[0050] A water level sensor 14 is fixed on the inner wall of the water tank.

[0051] A controller 15 is fixed on the motor. The controller is electrically connected to the variable-frequency motor, the water inlet valve, the water outlet valve and the water level sensor.

[0052] During operation, the water inlet valve is opened, and the cooling water enters the water tank from the water inlet 7. At the same time, the plastic particles cut by the pelletizer enter the water tank 1. At this time, a large amount of plastic debris and powder will enter the water tank together. At this time, the blower 10 is turned on. Since the first air outlet 11 of the blower is located at the bottom of the water tank (as Figure 1 shown), the blown air will emerge from the bottom of the water tank in the form of bubbles. A large number of bubbles move upward. When the bubbles come into contact with the plastic debris on the water surface, they will adhere to the lower part of the plastic debris. Due to the buoyancy of the bubbles, the plastic debris will float to the water surface faster. The one-way valve at the first air outlet 11 ensures the one-way flow of the gas.

[0053] At this time, the motor 2 is started. Since the scraper 4 and the rotating shaft 3 are fixed on the output shaft of the motor, the scraper 4 will rotate under the action of the motor 1. Also, because the output shaft of the motor is at the same height as the water surface, the scraper 4 will stir the plastic debris and powder floating on the water surface when rotating. Since the rotating direction of the scraper 4 is from the center of the water tank to the side of the confluence trough 5, the plastic debris and powder floating on the water surface can be continuously pushed towards the confluence trough 5. Since the second air outlet 12 of the blower 10 is fixed on one side of the water tank surface away from the confluence trough 5 (as Figure 2 shown), the second air outlet 12 is at the same height as the water surface, and the blowing direction is parallel to the water surface and points to the scraper 4. Therefore, the air blown by the blower can blow the plastic debris floating on the water surface on the side away from the confluence trough 5 towards the scraper 4, enabling the scraper to more effectively contact and push these debris when rotating, and prompting them to be guided to the confluence trough 5 faster. Since the confluence trough is in a "V" shape (as Figure 3As shown, a slope is provided on one side of the confluence trough 5 close to the water surface. The front end of the slope is submerged in the water, which can more effectively converge and guide the plastic debris and powder on the water surface. The slope provided on the side close to the water surface helps the debris enter the confluence trough 5, and the fact that the front end of the slope is submerged in the water ensures that even under the condition of water level fluctuations, good debris collection efficiency can be maintained, preventing the debris from being re-dispersed onto the water surface due to water flow disturbance. Then the plastic powder in the confluence trough will flow into the collection trough 6 at the end. In this way, the plastic debris and powder floating on the water surface can be removed as soon as possible. When the plastic in the collection trough accumulates enough, the staff can detach the collection trough 6 and take it away for cleaning. The cooling water without plastic debris at the lower layer of the water tank is discharged through the water outlet 8. A filter plate is provided on the water outlet 8. When the cooling water is discharged through the water outlet, the filter plate will filter out the residual plastic debris in the water, ensuring that the cooling water entering the circulation system is clean and realizing the recycling of the cooling water.

[0054] Since the motor 2 is a variable-frequency motor and is electrically connected to the controller 15, when the staff observes through the transparent observation window 13 that there is still a lot of plastic debris in the water tank, the output power of the motor 2 can be increased through the controller 15 to accelerate the speed of cleaning the plastic debris. When the staff observes less debris, the power of the motor 2 can be reduced to save energy. The water level sensor 14 fixed on the inner wall of the water tank can monitor the water level height and send it to the controller 15. Since the controller is also electrically connected to the water inlet valve and the water outlet valve, when the water level is too low, the controller 15 increases the water inlet valve and reduces the water outlet valve to increase the water inflow. When the water level is too high, it is vice versa, so as to ensure that the water level in the water tank is always at the same height as the scraper 4, so as to better remove the plastic debris floating on the water surface. The universal wheels 9 at the bottom of the water tank can make it move conveniently within the working area, improving the flexibility and working efficiency of the equipment.

[0055] The above are only the embodiments of the present invention. Common general knowledge such as the specific structures and characteristics in the solutions is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A circulating water purification device for a pelletizer, characterized in that, Including: A water tank placed on the ground, with a water inlet and a water outlet provided on the water tank wall, and a water inlet valve and a water outlet valve are respectively provided at the water inlet and the water outlet; A motor fixed on the water tank, and the output shaft of the motor is at the same height as the water surface of the water tank; A confluence trough fixed on one side of the water tank; A collection trough fixed at the end of the confluence trough; A rotating shaft fixedly connected to the output shaft of the motor; A scraping blade fixed on the rotating shaft along the length direction of the rotating shaft, and the rotation direction is from the center of the water tank to the side of the confluence trough.

2. The circulating water purification device of a pelletizer according to claim 1, characterized in that: A filter plate is provided at the water outlet.

3. The circulating water purification device of a pelletizer according to claim 1, characterized in that: Universal wheels are provided at the bottom of the water tank.

4. A pelletizer circulating water purification device according to claim 1, characterized in that: The confluence trough is "V"-shaped, and a slope is provided on the side of the confluence trough close to the water surface, and the front end of the slope is immersed in the water.

5. A pelletizer circulating water purification device according to claim 1, characterized in that: A blower is fixed below the water tank. The blower is provided with a first air outlet that extends into the water tank from the bottom of the water tank, and a one-way valve is provided at the first air outlet.

6. The circulating water purification device of a pelletizer according to claim 5, wherein: The blower is further provided with a second air outlet, and the second air outlet is fixed on the side of the water tank surface away from the confluence trough. The air outlet is at the same height as the water surface, and the blowing direction is parallel to the water surface and points to the scraping plate.

7. A pelletizer circulating water purification device according to claim 1, characterized in that: The motor is a variable-frequency motor, and a controller is fixed on the water tank. The variable-frequency motor is electrically connected to the controller.

8. A pelletizer circulating water purification device according to claim 1, characterized in that: A transparent observation window is provided on the side of the water tank to facilitate observing the internal situation of the water tank.

9. The circulating water purification device of a pelletizer according to claim 1, characterized in that: The collection trough is of a detachable structure.

10. The circulating water purification device for a pelletizer according to claim 1, characterized in that: A water level sensor is fixed on the inner wall of the water tank. The controller is electrically connected to the water level sensor, and the controller is also electrically connected to the water inlet valve and the water outlet valve.

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