Polyethylene outer sheath cooling device

Abstract

A polyethylene outer sheath cooling device comprises an extrusion molding production line used for producing a polyethylene outer sheath and a conveying line composed of a plurality of rotating tugs at the discharging end of the extrusion molding production line, the conveying line is provided with a cooling area for cooling through cold water, and the cooling area comprises a splash-proof cover. Two cooling pipes which are spirally wound at equal intervals in a staggered manner are arranged in the splash-proof cover, ventilation assemblies are arranged at the upper part and two sides of the splash-proof cover, and a water collecting tank for collecting cooling water is arranged at the lower part of the splash-proof cover. According to the utility model, the spirally wound cooling pipe, the ventilation assembly and the automatic control system are additionally arranged in the cooling area, so that a series of problems caused by cooling of the polyethylene outer sheath are fundamentally solved, the polyethylene outer sheath is cooled more uniformly, and meanwhile, the damage of equipment caused by splashing of water is also prevented, and the service life of the equipment is prolonged. And meanwhile, the effect of cooling the polyethylene outer sheath more accurately is achieved, and unnecessary economic expenditure is avoided.

Description

Technical Field

[0001] The utility model relates to the field of outer jacket cooling, in particular to a polyethylene outer jacket cooling device. Background Art

[0002] With the development of economy and urban construction, the application of thermal insulation pipes is increasing. In the process of manufacturing thermal insulation pipes, the polyethylene outer sheath pipe needs to be cooled quickly.

[0003] The existing cooling method usually adopts water cooling starting from the top of the insulation pipe, and relies on the water drop flow to cool the two sides and the bottom of the insulation pipe. In this cooling method, as the cooling water gradually flows downward, the water temperature will gradually rise, which often causes the two sides and the bottom of the insulation pipe to be not cooled properly and deformed. In addition, this cooling method has a large water flow, and due to the influence of the drop, it is easy to cause potholes in the insulation pipe that has not been cooled, affecting sales trends and being unfavorable for production. At the same time, if there is no protective cover on the outside, water splashes everywhere, and splashing on other equipment will easily cause a short circuit, resulting in equipment damage and adding unnecessary economic expenses to the company. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a polyethylene outer sheath cooling device.

[0005] The utility model is realized through the following technical solutions:

[0006] A polyethylene outer sheath cooling device comprises an extrusion production line for producing the polyethylene outer sheath, and a conveyor line composed of a plurality of rotating tugs at the discharge end of the extrusion production line, wherein a cooling zone for cooling by cold water is arranged on the conveyor line, and the cooling zone comprises a splash shield, wherein two cooling pipes wound in an equidistant staggered spiral shape are arranged in the splash shield, and ventilation components are arranged on the upper part of the splash shield and on both sides thereof, and a water collecting tank for collecting cooling water is arranged at the lower part of the splash shield.

[0007] Further optionally, a plurality of spray holes are opened on the inner side of the corresponding cooling pipe, and the diameter of the spray holes is 5-8 mm.

[0008] Further optionally, the water inlet of the corresponding cooling pipe is connected and fixed to the water pump through a water pipe, the water inlet of the water pump is connected and fixed to the water supply tank, and a control valve is installed on the water pipe.

[0009] Further optionally, the cooling pipe is fixed inside the splash shield via a plurality of support frames fixed between the rotating tug wheels.

[0010] Further optionally, the ventilation assembly includes a plurality of ventilation fans fixed on the top of the splash guard and cooling fans arranged on both sides of the splash guard.

[0011] Further optionally, a photoelectric switch is arranged inside one side of the splash guard.

[0012] Further optionally, an automatic control system is also included, which includes a photoelectric switch, a control valve, a water pump, a ventilation fan and a cooling fan electrically connected to the PLC controller.

[0013] Further optionally, the splash guard is connected and fixed to the side wall of the water collecting tank.

[0014] Compared with the existing technology, the beneficial effects of the utility model are: the utility model fundamentally solves a series of problems caused by the cooling of the polyethylene outer sheath by adding spirally wound cooling pipes, ventilation components and automatic control systems in the cooling zone, cools the polyethylene outer sheath more evenly, prevents water splashing and causing damage to the equipment, and achieves a more precise cooling effect on the polyethylene outer sheath, eliminating unnecessary economic expenditure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a main structural schematic diagram of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 4 is a schematic diagram of a cross section of a cooling pipe;

[0019] In the figure: extrusion production line 1, rotating tug 2, splash shield 3, cooling pipe 4, ventilation fan 5, cooling fan 6, water collection tank 7, spray hole 8, water pipe 9, water pump 10, water supply tank 11, control valve 12, support frame 13, photoelectric switch 14, PLC controller 15, polyethylene outer sheath 16 DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0021] like Figure 1 , 2 As shown in FIG. 3 , a polyethylene outer sheath cooling device comprises an extrusion production line 1 for producing a polyethylene outer sheath 16, and a conveyor line composed of a plurality of rotating tugs 2 at the discharge end of the extrusion production line 1, the conveyor line is provided with a cooling zone for cooling by cold water, the cooling zone comprises a splash shield 3, two cooling pipes 4 wound in an equidistant staggered spiral shape are provided in the splash shield 3, ventilation components are provided on the upper part of the splash shield and on both sides thereof, and a water collecting tank 7 for collecting cooling water is provided at the lower part of the splash shield 3.

[0022] like Figure 4 As shown, a plurality of spray holes 8 are provided on the inner side of the corresponding cooling pipe 4, and the diameter of the spray hole 8 is 5-8 mm.

[0023] like Figure 1 As shown, the water inlet of the corresponding cooling pipe 4 is connected and fixed to the water pump 10 through the water pipe 9, the water inlet of the water pump 10 is connected and fixed to the water supply tank 11, and a control valve 12 is installed on the water pipe 9.

[0024] like Figure 2 , 3 As shown, the cooling pipe 4 is fixed inside the splash shield 3 through a plurality of support frames 13 fixed between the rotating tugs 2 .

[0025] like Figure 1 , 3 As shown, the ventilation assembly includes a plurality of ventilation fans 5 fixed on the top of the splash shield 3 and cooling fans 6 arranged on both sides of the splash shield 3 .

[0026] like Figure 1 , 2 As shown in FIG. 3 , a photoelectric switch 14 is provided inside one side of the splash shield 3 .

[0027] like Figure 1 As shown, it also includes an automatic control system, which includes a photoelectric switch 14 electrically connected to a PLC controller 15, a control valve 12, a water pump 10, a ventilation fan 5 and a cooling fan 6.

[0028] like Figure 1 , 2 As shown in 3, the splash shield 3 is connected and fixed to the side wall of the water collecting tank 7.

[0029] The implementation principle of a polyethylene outer sheath cooling device in the embodiment of the present application is:

[0030] When the polyethylene outer sheath 16 is produced by the extrusion line 1, it will be translated through the cooling zone by the rotating tug 2 with a certain angle;

[0031] When one end of the polyethylene outer sheath 16 enters the cooling zone, the photoelectric switch 14 on the splash guard 3 will be blocked first. After blocking, the photoelectric switch 14 will send a circuit breaker signal and send the signal to the PLC controller 15. At the same time, the PLC controller 15 controls the sending of signals to start the ventilation fan 5, the cooling fan 6 and the water pump 10, and opens the control valve 12. After the water pump 10 is started, the water in the water supply tank 11 will be injected into the corresponding cooling pipe 4. The water entering the cooling pipe 4 will be discharged from a number of spray holes 8. The water discharged from the spray holes 8 will form water rings one by one, thereby performing 360° spray cooling on the translated polyethylene outer sheath 16. After part of the cooling is completed, the water will drip from the surface of the polyethylene outer sheath 16 to the water collecting tank 7 by its own weight, and part of the water splashing during the spraying will be blocked by the splash guard 3 and slowly flow into the water collecting tank 7 along the side wall to prevent splashing to the outside;

[0032] Since the temperature of the polyethylene outer sheath 16 is relatively high, the temperature inside the splash shield 3 will become higher, and the cooling water will generate a large amount of water vapor, thereby affecting the cooling effect. At this time, the ventilation fan 5 on the upper part of the splash shield 3 will discharge the internal hot air, and the cooling fan 6 will discharge the cold air into it, so as to achieve a constant temperature inside the splash shield 3, so that the polyethylene outer sheath 16 can be better cooled;

[0033] The recovered water in the water collecting tank 7 can be refilled into the water supply tank 11 for continued use after cooling, thus completing the entire cooling process. The entire process completes the uniform cooling of the polyethylene outer sheath 16 and prevents water splashing. At the same time, it also realizes the process of automatic control and cooling water recycling.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A polyethylene outer sheath cooling device, comprising an extrusion production line (1) for producing a polyethylene outer sheath (16), and a conveyor line composed of a plurality of rotating tugs (2) at the discharge end of the extrusion production line (1), wherein a cooling zone for cooling by cold water is arranged on the conveyor line, characterized in that: The cooling zone comprises a splash shield (3), two cooling pipes (4) wound in an equidistant staggered spiral are arranged inside the splash shield (3), ventilation components are arranged on the top of the splash shield and on both sides thereof, and a water collecting tank (7) for collecting cooling water is arranged at the bottom of the splash shield (3).

2. A polyethylene outer sheath cooling device according to claim 1, characterized in that: A plurality of spray holes (8) are provided on the inner side of the corresponding cooling pipe (4), and the diameter of the spray holes (8) is 5-8 mm.

3. A polyethylene outer sheath cooling device according to claim 2, characterized in that: The water inlet of the corresponding cooling pipe (4) is connected and fixed to a water pump (10) via a water delivery pipe (9), the water inlet of the water pump (10) is connected and fixed to a water supply tank (11), and a control valve (12) is installed on the water delivery pipe (9).

4. A polyethylene outer sheath cooling device according to claim 3, characterized in that: The cooling pipe (4) is fixed inside the splash shield (3) via a plurality of support frames (13) fixed between the rotating tug wheels (2).

5. A polyethylene outer sheath cooling device according to claim 1, characterized in that: The ventilation assembly comprises a plurality of ventilation fans (5) fixed on the top of the splash shield (3) and cooling fans (6) arranged on both sides of the splash shield (3).

6. A polyethylene outer sheath cooling device according to claim 1, characterized in that: A photoelectric switch (14) is arranged inside one side of the splash shield (3).

7. A polyethylene outer sheath cooling device according to claim 1, characterized in that: It also includes an automatic control system, which includes a photoelectric switch (14) electrically connected to a PLC controller (15), a control valve (12), a water pump (10), a ventilation fan (5) and a cooling fan (6).

8. A polyethylene outer sheath cooling device according to claim 1, characterized in that: The splash shield (3) is connected and fixed to the side wall of the water collecting tank (7).

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