High-efficiency cooling device for phenolic molding compound

Abstract

The scheme provides a kind of phenolic molding compound high-efficiency cooling device, including cooling water tank, cooling water tank has inlet and outlet, and strip is from inlet and outlet, it further includes: first water pump, it is set in cooling water tank bottom, first water pump is connected with first water inlet pipe and first water outlet pipe;Cooling spray device is set in the upper of cooling water tank, and first water outlet pipe is penetrated into the inside of cooling spray device;Cooling spray device includes spray base plate and arched water baffle body, spray base plate is horizontally set in the upper of cooling water tank, is set with several water holes in spray base plate, and water baffle body is installed in the upper of spray base plate and is enclosed into spray box with spray base plate, and the water outlet end of first water outlet pipe is in-depth in the spray box and is provided with the spray head towards arched water baffle body.The scheme can realize strip uniform, fast cooling, to meet the needs of modern high-performance phenolic molding compound high-efficiency, high-quality production.

Description

Technical Field

[0001] This utility model relates to the field of phenolic molding compound production and processing technology, and in particular to a high-efficiency cooling device for phenolic molding compounds. Background Technology

[0002] Phenolic molding compounds, as a type of high-performance thermosetting plastic, are widely used in electrical, electronic, automotive, and daily consumer goods industries. In its production process, after the material is mixed, rolled, or melted and plasticized in an extruder, it is extruded into high-temperature strips. These strips must then be immediately placed in a cooling water tank for rapid cooling and shaping to prevent material adhesion and ensure sufficient strength and toughness for subsequent crushing and granulation.

[0003] Currently, the cooling devices commonly used in the industry are mostly open or semi-open cooling water tanks. Their basic working principle is: cooling water is continuously injected through the inlet at one end of the tank and flows out from the outlet at the other end. The high-temperature material strip is immersed in the water and transported along the length of the tank. The cooling purpose is achieved through heat exchange between the water and the material strip.

[0004] However, with the widespread application of modern high-efficiency extrusion equipment, the output speed of phenolic molding compounds has increased significantly, leading to a sharp increase in the amount of heat flowing into the cooling water tank per unit time. The heat exchange efficiency of traditional water tanks can no longer match the production rhythm of high-speed extrusion. As a result, the cooling water temperature often continues to rise, while the cooling capacity drops sharply. To ensure that the material strip is adequately cooled, operators have to manually reduce the extruder speed or extend the length of the water tank, which undoubtedly sacrifices the efficiency of the entire production line, making the cooling process a bottleneck that restricts capacity improvement. At the same time, existing cooling water tanks usually adopt a simple direct-flow inlet / outlet design, resulting in a single water flow path and unreasonable water flow within the tank. Hot water tends to accumulate at the top of the tank and near the outlet due to density differences, while stagnant water zones form in areas far from the inlet, especially at the bottom and corners of the tank, significantly reducing heat exchange efficiency.

[0005] Therefore, in view of the problems of uneven water temperature and low heat exchange efficiency in the existing cooling water tank, there is an urgent need for a new type of high-efficiency cooling device that can achieve uniform and rapid cooling to meet the needs of efficient and high-quality production of modern high-performance phenolic molding compounds. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a high-efficiency cooling device for phenolic molding compounds, which solves the problems of uneven cooling water temperature and low heat exchange efficiency in existing technologies.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A high-efficiency cooling device for phenolic molding compound includes a cooling water tank with an inlet and an outlet on its two side walls. A molding strip enters through the inlet and exits through the outlet. The device also includes: a first water pump located at the bottom of the cooling water tank, connected to a first inlet pipe and a first outlet pipe, with the inlet end of the first inlet pipe located at the bottom of the cooling water tank near the inlet end; and a cooling spray device positioned above the cooling water tank, with the first outlet pipe extending into the interior of the cooling spray device. The cooling spray device includes a spray base plate and an arched water-blocking cover. The spray base plate is horizontally positioned above the cooling water tank and has several water-falling holes. The water-blocking cover is installed above the spray base plate and together with the spray base plate forms a spray box. The outlet end of the first outlet pipe extends into the spray box and is equipped with a nozzle facing the arched water-blocking cover.

[0009] Furthermore, the cooling spray device also includes an exhaust hood, which is an arched structure and is installed above the water baffle. A support rod is provided between the water baffle and the exhaust hood, and an air passage groove is formed between the exhaust hood and the water baffle. An exhaust fan is also provided on the top of the exhaust hood, and the exhaust port of the exhaust fan is connected to the air passage groove.

[0010] Furthermore, an electric telescopic rod is installed on the side wall of the cooling water tank. The movable end of the electric telescopic rod is connected to the exhaust hood or the spray base plate to drive the cooling spray device to move up and down relative to the cooling water tank.

[0011] Furthermore, the cooling water tank is equipped with two support rollers, which are rotatably mounted on the side walls of the cooling water tank near the inlet and outlet, respectively, to support the material strip from below; the cooling water tank is also equipped with two guide rollers, which are located between the two support rollers and below the horizontal plane, to press the material strip into the water.

[0012] Furthermore, it also includes a chiller, which is connected to a second inlet pipe and a second outlet pipe. The second inlet pipe is connected to the end of the cooling water tank near the feed inlet, and the second outlet pipe is connected to the end of the cooling water tank near the discharge outlet.

[0013] Furthermore, the inlet of the second water inlet pipe and the outlet of the second water outlet pipe are both located below the horizontal plane, and their heights are equivalent to the height of the material strip located below the horizontal plane.

[0014] Furthermore, it also includes a drying tank, which is located on one side of the outlet of the cooling water tank. The material strips cooled by the cooling water tank are inserted into the drying tank, and an air knife is provided in the drying tank to blow away the moisture on the surface of the material strips.

[0015] The present invention has the following beneficial effects: By introducing a cooling spray device driven by a first water pump and cooperating with a chiller system, this solution effectively breaks the temperature stratification and dead water zone in the cooling water tank, which can improve the heat exchange efficiency of the water in the cooling water tank, improve the uniformity of water temperature, and ultimately improve the efficiency of production and processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] In the above attached figures: 1. Cooling water tank; 2. Feed inlet; 3. Feed outlet; 4. Material bar; 5. Horizontal plane; 6. Support roller; 7. Guide roller; 8. First water pump; 9. First water inlet pipe; 10. First water outlet pipe; 11. Spray base plate; 12. Water baffle; 13. Exhaust hood; 14. Spray nozzle; 15. Water drop hole; 16. Support rod; 17. Air duct; 18. Exhaust fan; 19. Electric telescopic rod; 20. Chiller; 21. Second water inlet pipe; 22. Second water outlet pipe; 23. Drying tank; 24. Air knife. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] A high-efficiency cooling device for phenolic molding compounds, such as Figure 1 As shown, the system includes a cooling water tank 1. An inlet 2 and an outlet 3 are respectively provided on the side walls at both ends of the cooling water tank 1. A strip 4 is inserted into the cooling water tank 1 through the inlet 2 at one end and then exits through the outlet 3 at the other end. The cooling water tank 1 is filled with cooling water to cool the strip 4, and the strip 4 inserted into the cooling water tank 1 extends into the cooling water. The cooling water tank 1 is equipped with two support rollers 6 and two guide rollers 7. The two support rollers 6 are rotatably connected to the side walls of the cooling water tank 1 and are respectively close to the inlet 2 and outlet 3. The two support rollers 6 are located above the horizontal plane 5 and support the lower part of the strip 4. The two guide rollers 7 are located between the two support rollers 6 and below the water surface. The two guide rollers 7 press down on the upper part of the strip 4 and press the strip 4 below the horizontal plane 5.

[0020] The high-efficiency cooling device for phenolic molding compound in this embodiment also includes a first water pump 8 located at the bottom of the cooling water tank 1. The first water pump 8 is connected to a first inlet pipe 9 and a first outlet pipe 10. The inlet end of the first inlet pipe 9 is located at the bottom of the cooling water tank 1 near the feed inlet 2, and the outlet end of the first outlet pipe 10 extends upward beyond the horizontal surface 5 of the cooling water. The end of the first outlet pipe 10 away from the first water pump 8 is connected to a cooling spray device.

[0021] The cooling spray device includes a spray base plate 11, an arched water-blocking cover 12, and an exhaust hood 13. In this embodiment, the spray base plate 11, the water-blocking cover 12, and the exhaust hood 13 are all made of stainless steel. The spray base plate 11 is horizontally positioned above the cooling water tank 1, and the arched water-blocking cover 12 is installed above the spray base plate 11. The spray base plate 11 and the water-blocking cover 12 form a spray box, which is a closed cavity structure.

[0022] A circular hole is provided in the middle of the spray base plate 11, and the first water outlet pipe 10 passes through the circular hole into the spray box. A nozzle 14 is provided at the end of the first water outlet pipe 10 that extends into the spray box. Water is sprayed upward from the nozzle 14 and impacts the arched water baffle 12. Some of the water falls directly onto the spray base plate 11 after impacting the water baffle 12, while some water flows down the arched inner wall of the water baffle 12 to the spray base plate 11 after impacting the water baffle 12. The spray base plate 11 has several drainage holes 15, and the water flowing onto the spray base plate 11 falls back into the cooling water tank 1 through the drainage holes 15.

[0023] The exhaust hood 13 is also arched, and its diameter is larger than that of the water baffle 12. The exhaust hood 13 covers the water baffle 12. The exhaust hood 13 and the water baffle 12 are fixedly connected by a support rod 16, forming an air passage 17 between them. An exhaust fan 18 is installed at the top of the exhaust hood 13. When the exhaust fan 18 is turned on, air is drawn from above the horizontal plane 5 of the cooling water tank 1 into the air passage 17.

[0024] An electric telescopic rod 19 is installed on the side wall of the cooling water tank 1. The movable end of the electric telescopic rod 19 is fixedly connected to the exhaust hood 13. When the electric telescopic rod 19 extends or retracts, it drives the spray box and the exhaust hood 13 to move up and down synchronously. At this time, the first water outlet pipe 10 slides in the round hole. The extension and retraction of the electric telescopic rod 19 can adjust the distance from which water falls from the spray base plate 11, thereby adjusting the cooling effect of the water.

[0025] The inlet end of the first water inlet pipe 9 is located at the bottom of the cooling water tank 1, near the feed inlet 2. Because this location is close to the feed inlet 2, the water temperature is high, and it is in a stagnant zone where the water is relatively still, resulting in low heat exchange efficiency. The first water pump 8 draws water from this location into the spray box. The water is sprayed from the nozzle 14 onto the arched water baffle 12. The stainless steel water baffle 12 has high thermal conductivity, effectively cooling the water as it hits or flows down it. After falling into the spray base plate 11, the water drips back into the cooling water tank 1 through the drain hole 15, effectively cooling the water through full contact with air during this process. Meanwhile, air is drawn from above the horizontal plane 5 of the cooling water tank 1 into the air passage 17 and finally discharged by the exhaust fan 18. The air humidity here is high and it can cool the water baffle 12 when it passes through the air passage 17. The airflow generated by the exhaust fan 18 can also increase the air movement above the horizontal plane 5 in the cooling water tank 1, thereby accelerating the evaporation of water and reducing the temperature of the entire area.

[0026] A chiller 20 is installed below the cooling water tank 1, and the chiller 20 is connected to a second inlet pipe 21 and a second outlet pipe 22. The end of the second inlet pipe 21 away from the chiller 20 is connected to the end of the cooling water tank 1 near the feed inlet 2, and is at the same height as the material bar 4 located below the horizontal plane 5. The end of the second outlet pipe 22 away from the chiller 20 is connected to the end of the cooling water tank 1 near the discharge outlet 3, and is at the same height as the material bar 4 located below the horizontal plane 5. After the chiller 20 is started, it draws the warmer water from the cooling water tank 1 into itself through the second inlet pipe 21, and discharges the cooler water (after heat exchange) back into the cooling water tank 1 through the second outlet pipe 22. In this case, the cooler water discharged from the chiller 20 moves in the cooling water tank 1 against the direction of movement of the material bar 4, thereby improving cooling efficiency and increasing the heat exchange efficiency of the water in the cooling water tank 1.

[0027] Filter heads are installed at the ends of the first water inlet pipe 9 and the second water inlet pipe 21.

[0028] A drying tank 23 is also provided on one side of the cooling water tank 1. The material strip 4, after being cooled by the cooling water tank 1, is inserted into the drying tank 23. An air knife 24 is provided at the drying tank 23 to effectively remove the moisture from the material strip 4.

[0029] By combining the chiller 20 and the cooling spray device, the water in the cooling water tank 1 can move in all places, thereby reducing the formation of dead water zones, improving the heat exchange efficiency of the water in the cooling water tank 1, improving the uniformity of water temperature, and ultimately improving the efficiency of production and processing.

[0030] 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 high-efficiency cooling device for phenolic molding compound, comprising a cooling water tank (1), wherein an inlet (2) and an outlet (3) are respectively provided on the side walls at both ends of the cooling water tank (1), and a strip (4) is inserted through the inlet (2) and exited through the outlet (3), characterized in that, Also includes: The first water pump (8) is located at the bottom of the cooling water tank (1). The first water pump (8) is connected to the first water inlet pipe (9) and the first water outlet pipe (10). The water inlet end of the first water inlet pipe (9) is located at the bottom of the cooling water tank (1) near the feed inlet (2). A cooling spray device is provided above the cooling water tank (1), and the first water outlet pipe (10) is inserted into the interior of the cooling spray device. The cooling spray device includes a spray base plate (11) and an arched water baffle (12). The spray base plate (11) is horizontally arranged above the cooling water tank (1). Several water drop holes (15) are opened on the spray base plate (11). The water baffle (12) is installed above the spray base plate (11) and together with the spray base plate (11) forms a spray box. The water outlet end of the first water outlet pipe (10) extends into the spray box and is provided with a nozzle (14) facing the arched water baffle (12).

2. The high-efficiency cooling device for phenolic molding compound according to claim 1, characterized in that: The cooling spray device also includes an exhaust hood (13), which is an arched structure and is installed above the water baffle (12). A support rod (16) is provided between the water baffle (12) and the exhaust hood (13), and an air passage groove (17) is formed between the exhaust hood (13) and the water baffle (12). An exhaust fan (18) is also provided on the top of the exhaust hood (13), and the exhaust port of the exhaust fan (18) is connected to the air passage groove (17).

3. The high-efficiency cooling device for phenolic molding compound according to claim 2, characterized in that: An electric telescopic rod (19) is also installed on the side wall of the cooling water tank (1). The movable end of the electric telescopic rod (19) is connected to the exhaust hood (13) or the spray base plate (11) to drive the cooling spray device to move up and down relative to the cooling water tank (1).

4. The high-efficiency cooling device for phenolic molding compound according to claim 1, characterized in that: The cooling water tank (1) is provided with two support rollers (6), which are rotatably installed on the side wall of the cooling water tank (1) near the feed inlet (2) and the discharge outlet (3), respectively, for supporting the material strip (4) from below; the cooling water tank (1) is also provided with two guide rollers (7), which are located between the two support rollers (6) and below the horizontal plane (5), for pressing the material strip (4) into the water.

5. The high-efficiency cooling device for phenolic molding compound according to claim 1, characterized in that: It also includes a chiller (20), which is connected to a second inlet pipe (21) and a second outlet pipe (22). The second inlet pipe (21) is connected to one end of the cooling water tank (1) near the feed inlet (2), and the second outlet pipe (22) is connected to one end of the cooling water tank (1) near the discharge outlet (3).

6. The high-efficiency cooling device for phenolic molding compound according to claim 5, characterized in that: The inlet of the second water inlet pipe (21) and the outlet of the second water outlet pipe (22) are both located below the horizontal plane (5), and their heights are equivalent to the height of the material strip (4) located below the horizontal plane (5).

7. The high-efficiency cooling device for phenolic molding compound according to claim 1, characterized in that: It also includes a drying trough (23), which is located on one side of the outlet (3) of the cooling water tank (1). The material strip (4) after being cooled by the cooling water tank (1) is inserted into the drying trough (23). An air knife (24) for blowing off the moisture on the surface of the material strip (4) is provided in the drying trough (23).

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