Cooling device for plastic extruder

Abstract

The utility model discloses a cooling device for a plastic extruder, and relates to the technical field of water cooling equipment, a stirring motor is mounted on the outer surface of a mixing box, an output shaft of the stirring motor extends into the mixing box and is fixedly provided with stirring blades, a water pump is arranged on the side edge of the mixing box, and the water inlet end of the water pump is communicated with a water outlet formed in the mixing box; a filtering mechanism is installed in the mixing box and shields the water outlet, a water tank is arranged on the side edge of the water pump, the water outlet end of the water pump communicates with the water tank, and a negative pressure pump used for exhausting is arranged at the upper end of the water tank; the stirring motor is mounted on the outer side of the mixing box, and the output shaft of the stirring motor extends into the mixing box and is fixedly provided with the stirring blade, so that when the stirring motor is connected with an external power supply, the stirring motor drives the stirring blade to mix and stir water in the mixing box; therefore, the scale inhibitor added in the mixing box can be mixed and dissolved conveniently, and the filtered water is supplied to the water tank by the water pump.

Description

Technical Field

[0001] The utility model relates to the technical field of water-cooling equipment, in particular to a cooling device for a plastic extruder. Background Art

[0002] Water cooling of plastic extruders is a common cooling method in the extrusion process, used to cool the extruded plastic products to ensure their ideal shape and performance during the forming process. When the water-cooling cycle of the extruder is carried out, it is necessary to cool the water discharged from the extruder.

[0003] When the traditional cooling device for plastic extruders is in use, due to the recycling of water, magnesium elements in the water are likely to react with carbonic acid to form calcium carbonate precipitation, causing blockage of the water-cooling pipes of the extruder. At the same time, the internal pressure is likely to increase when the cooling device stores water, resulting in obstruction of the water cycle and being unfavorable for the circulating water cooling of the extruder. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides the following technical solution: a cooling device for a plastic extruder, including a mixing tank, a stirring motor is installed on the outer surface of the mixing tank, the output shaft of the stirring motor extends into the interior of the mixing tank and is fixed with a stirring paddle, a water pump is arranged on the side of the mixing tank, the water inlet end of the water pump is communicated with the water outlet arranged on the mixing tank, a filtering mechanism is installed inside the mixing tank, and the filtering mechanism shields the water outlet, a water tank is arranged on the side of the water pump, and the water outlet end of the water pump is communicated with the water tank, a negative pressure pump for exhausting gas is arranged at the upper end of the water tank, a water level sensor for monitoring the water level is installed on the side of the water tank, and two water level sensors are provided, the water outlet pipe arranged at the lower part of the water tank is connected with the water-cooling inlet end of the extruder, a water inlet pipe is installed in the middle of the water tank, and the water inlet pipe of the water tank is connected with the water-cooling outlet end of the extruder through a cooler.

[0005] As an improvement of the above technical solution, the filtering mechanism includes a filter screen frame welded on the inner surface of the mixing tank and a filter screen plate inserted into the filter screen frame. Slots are arranged on the filter screen frame for inserting the filter screen frame. Limit convex strips are welded on the inner surfaces at both ends of the slots. Limit grooves are opened at both ends of the filter screen plate, and the limit convex strips are installed inside the limit grooves.

[0006] As an improvement of the above technical solution, the filter screen frame is of a "C" - shaped structure.

[0007] As an improvement of the above technical solution, the cooler includes a water-cooling box connected to the water inlet end of the water tank. A number of water-cooling plates are installed inside the water-cooling box. The water inlet end installed at the lower part of the water-cooling box is connected with the water-cooling outlet end of the extruder. A gas collection hood is welded on the side of the water-cooling box, and a fan is installed inside the gas collection hood.

[0008] As an improvement of the above technical solution, the water cooling plate is a rectangular hollow plate, and the water in the lower part of the water cooling box is transferred to the upper part through the water cooling plate.

[0009] Beneficial effects of the utility model:

[0010] 1. A stirring motor is installed on the outside of the mixing box, and the output shaft of the stirring motor extends into the mixing box and is fixed with a stirring blade, so that when the stirring motor is connected to an external power supply, the stirring motor brings the stirring blade to mix and stir the water inside the mixing box, so that the anti-scaling agent added in the mixing box is mixed and dissolved, and the filtering mechanism installed in the mixing box is convenient for the filtering mechanism to filter the large particles inside the mixing box, and the water pump is installed on the outside of the mixing box, and the water outlet of the water pump is connected with the water tank, so that the descaling agent is added and the filtered cooling water is injected into the water tank, and the water level sensor installed on the side of the water tank is convenient for the water level sensor to monitor the water level inside the water tank to avoid the problem of too low or too high water level inside the mixing box, and the negative pressure pump installed on the top of the water tank is convenient for the air on the top of the water tank to be discharged outwardly, and the water inlet pipe of the water tank is connected to the water cooling outlet of the extruder through the cooler, so that the water discharged from the water cooling outlet of the extruder is cooled by the cooler and then flows back to the inside of the water tank, thereby achieving the purpose of circulating water cooling of the extruder and saving water resources.

[0011] 2. Through the filtering mechanism composed of a filter frame, a filter plate, a limiting convex strip and a limiting groove, the filter plate is installed inside the filter frame, and the limiting convex strips welded on the inner side of the filter frame are installed in the limiting grooves opened at both ends of the filter plate, thereby achieving the stability of the filter plate installed in the filter frame, making it convenient for the filter plate to filter the water inside the mixing box, and the filter plate is easy to replace.

[0012] 3. A cooler consisting of a water-cooled box, a water-cooled plate, an air collecting hood and a fan is used, and the water-cooled plate is fixed inside the water-cooled box, so that the water entering the water inlet end of the lower part of the water-cooled box can reach the upper end through the water-cooled plate. A fan is installed in the air collecting hood welded on the side of the water-cooled box, so that the air blown by the fan can dissipate the heat of the water inlet of the water-cooled plate, thereby cooling the water in the reflux water tank, thereby achieving the purpose of circulating water cooling of the extruder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0014] Figure 2 This is the main structural diagram of the utility model;

[0015] Figure 3 This is a structural diagram of a water cooling box, a water cooling plate, an air collecting hood and a fan in the utility model;

[0016] Figure 4 for Figure 1 Enlarged structural diagram of point A in the middle.

[0017] Figure numerals: 1. mixing box; 2. filter rack; 3. filter screen; 4. limiting convex strip; 5. limiting groove; 6. stirring motor; 7. stirring blade; 8. water tank; 9. water pump; 10. water level sensor; 11. water cooling box; 12. water cooling plate; 13. air collecting hood; 14. fan; 15. negative pressure pump. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] See also Figure 1-4 The utility model provides a technical solution: a cooling device for a plastic extruder, comprising a mixing box 1, a stirring motor 6 is installed on the outer surface of the mixing box 1, the output shaft of the stirring motor 6 extends into the interior of the mixing box 1 and is fixed with a stirring blade 7, a water pump 9 is arranged on the side of the mixing box 1, the water inlet end of the water pump 9 is connected with the water outlet provided on the mixing box 1, a filtering mechanism is installed inside the mixing box 1, and the filtering mechanism blocks the water outlet, a water tank 8 is arranged on the side of the water pump 9, and the water outlet end of the water pump 9 is connected with the water tank 8, a negative pressure pump 15 for exhaust is arranged on the upper end of the water tank 8, a water level sensor 10 for water level monitoring is installed on the side of the water tank 8, and two water level sensors 10 are arranged, a water outlet pipe arranged at the lower part of the water tank 8 is connected with the water cooling water inlet end of the extruder, a water inlet pipe is installed in the middle part of the water tank 8, and the water inlet pipe of the water tank 8 is connected with the water cooling water outlet end of the extruder through a cooler.

[0020] In this implementation scheme, through the stirring motor 6 installed outside the mixing tank 1, the output shaft of the stirring motor 6 extends into the mixing tank 1 and is fixed with a stirring paddle 7. Thus, when the stirring motor 6 is connected to an external power supply, the stirring motor 6 drives the stirring paddle 7 to mix and stir the water inside the mixing tank 1, facilitating the mixing and dissolution of the scale inhibitor added to the mixing tank 1. The filtering mechanism installed inside the mixing tank 1 is convenient for filtering large particles inside the mixing tank 1. A water pump 9 is installed on the side of the mixing tank 1, and the water outlet end of the water pump 9 is communicated with the water tank 8. The filtered water is supplied to the water tank 8 through the water pump 9, facilitating the injection of the cooling water with the scale inhibitor into the water tank 8. The water level sensor 10 installed on the side of the water tank 8 is convenient for monitoring the water level inside the water tank 8, avoiding problems of too low or too high water level inside the mixing tank 1. The negative pressure pump 15 installed on the top of the water tank 8 is convenient for discharging the air outside the top of the water tank 8. The water inlet pipe of the water tank 8 is connected to the water-cooled outlet end of the extruder through a cooler, facilitating the water discharged from the water-cooled outlet end of the extruder to be cooled by the cooler and then flow back into the interior of the water tank 8, thus achieving the purpose of circulating water cooling for the extruder.

[0021] Specifically, the filtering mechanism includes a filter screen frame 2 welded to the inner surface of the mixing tank 1 and a filter screen plate 3 inserted into the filter screen frame 2. The filter screen frame 2 is of a "C" - shaped structure. Slots are provided on the filter screen frame 2 for inserting the filter screen frame 2. Limiting ridges 4 are welded to the inner surfaces at both ends of the slots. Limiting grooves 5 are opened at both ends of the filter screen plate 3, and the limiting ridges 4 are located inside the limiting grooves 5, enabling the filter screen plate 3 to be inserted and limited inside the filter screen frame 2.

[0022] In this embodiment, through the filtering mechanism composed of the filter screen frame 2, the filter screen plate 3, the limiting ridges 4, and the limiting grooves 5, the filter screen plate 3 is installed inside the filter screen frame 2. At the same time, the limiting ridges 4 welded to the inner side of the filter screen frame 2 are installed inside the limiting grooves 5 opened at both ends of the filter screen plate 3, thus realizing the stability of the filter screen plate 3 installed inside the filter screen frame 2, facilitating the filter screen plate 3 to filter the water inside the mixing tank 1, and making the water output to the water tank 8 be filtered water.

[0023] Specifically, the cooler includes a water - cooling box 11 connected to the water inlet pipe of the water tank 8. A number of water - cooling plates 12 are installed inside the water - cooling box 11 in sequence from left to right. The water inlet end installed at the lower part of the water - cooling box 11 is connected to the water - cooled outlet end of the extruder. An air - collecting hood 13 is welded to the side of the water - cooling box 11, and a fan 14 is installed inside the air - collecting hood 13. The water - cooling plates 12 are rectangular hollow plates, and the water at the lower part of the water - cooling box 11 is transferred to the upper part through the water - cooling plates 12.

[0024] In the present embodiment, a cooler consisting of a water-cooling box 11, a water-cooling plate 12, an air collecting hood 13 and a fan 14 is used, and the water-cooling plate 12 is fixed inside the water-cooling box 11, so that water entering the lower water inlet end of the water-cooling box 11 can reach the upper part through the water-cooling plate 12, and the fan 14 is installed in the air collecting hood 13 welded on the side of the water-cooling box 11, so that the air blown by the fan 14 can cool the water inlet of the water-cooling plate 12 for heat dissipation, thereby cooling the water in the reflux water tank 8, thereby achieving the purpose of circulating water cooling of the extruder.

[0025] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A cooling device for a plastic extruder, comprising a mixing box (1), characterized in that: A stirring motor (6) is installed on the outer surface of the mixing tank (1). The output shaft of the stirring motor (6) extends into the interior of the mixing tank (1) and is fixed with a stirring paddle (7). A water pump (9) is arranged on the side of the mixing tank (1). The water inlet end of the water pump (9) is communicated with the water outlet arranged on the mixing tank (1). A filtering mechanism is installed inside the mixing tank (1), and the filtering mechanism shields the water outlet. A water tank (8) is arranged on the side of the water pump (9), and the water outlet end of the water pump (9) is communicated with the water tank (8). A negative pressure pump (15) for exhausting gas is arranged at the upper end of the water tank (8). A water level sensor (10) for water level monitoring is installed on the side of the water tank (8), and there are two water level sensors (10). The water outlet pipe arranged at the lower part of the water tank (8) is connected to the water-cooling inlet end of the extruder. A water inlet pipe is installed in the middle of the water tank (8), and the water inlet pipe of the water tank (8) is connected to the water-cooling outlet end of the extruder through a cooler.

2. The cooling device for a plastic extruder according to claim 1, characterized in that: The filtering mechanism includes a filter screen frame (2) welded to the inner surface of the mixing tank (1), and a filter screen plate (3) inserted into the filter screen frame (2). The filter screen frame (2) is provided with slots for inserting the filter screen frame (2). Limit ridges (4) are welded to the inner surfaces at both ends of the slots. Limit grooves (5) are opened at both ends of the filter screen plate (3), and the limit ridges (4) are installed inside the limit grooves (5).

3. The cooling device for a plastic extruder according to claim 2, characterized in that: The filter screen frame (2) is of a "C"-shaped structure.

4. The cooling device for a plastic extruder according to claim 1, characterized in that: The cooler includes a water-cooling box (11) connected to the water inlet end of the water tank (8). A number of water-cooling plates (12) are installed inside the water-cooling box (11). The water inlet end installed at the lower part of the water-cooling box (11) is connected to the water-cooling outlet end of the extruder. A gas collecting hood (13) is welded to the side of the water-cooling box (11). A fan (14) is installed inside the gas collecting hood (13).

5. The cooling device for plastic extruder according to claim 4, characterized in that: The water-cooling plate (12) is a rectangular hollow plate, and the water at the lower part of the water-cooling box (11) is transferred to the upper part through the water-cooling plate (12).

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