A cooling device for processing thermoplastic flame-retardant polyethylene cable material

Abstract

This utility model discloses a cooling device for processing thermoplastic flame-retardant polyethylene cable material, belonging to the field of cable material processing technology. It includes a cooling box and a feeding trough formed on one side of the top of the cooling box. A water-cooled perforated conveyor belt is installed at the top inner part of the cooling box, an air-cooled perforated vibrating frame is installed directly below the water-cooled perforated conveyor belt, and a discharge perforated conveyor belt is installed directly below the air-cooled perforated vibrating frame. An air-cooling component is installed through the bottom inner part of the cooling box. This utility model uses a distributing spiral shaft at the bottom of the feeding trough to distribute the granular raw material, which enters the cooling box from the feeding trough, evenly spreading it outwards from the center onto the water-cooled perforated conveyor belt. The material is then cooled by water mist sprayed from the top spray component. Excess water is collected in a water storage tank, ensuring uniform contact between the granular raw material and the cooling water mist, and effectively recovering excess water to avoid affecting the conveying process.

Description

Technical Field

[0001] This utility model relates to the field of cable material processing technology, and in particular to a cooling device for processing thermoplastic flame-retardant polyethylene cable material. Background Technology

[0002] Polyethylene cable material is a product made by mixing PE with additives (plasticizers, stabilizers, flame retardants, fillers, pigments, etc.) and processing it into a special material for use as the insulation or sheath layer of wires and cables through an extruder.

[0003] In a cooling device for processing thermoplastic flame-retardant polyethylene cable material (document number CN213440571U), a cooling box is included, and a collection trough is fixedly installed at the bottom of the cavity of the cooling box. In this invention, the cable granules are cooled by water spraying as they pass under the spray group via a conveyor belt. When the cable granules are transported from the upper conveyor belt to the lower conveyor belt, the drop difference between the two conveyor belts improves the cooling efficiency and further prevents adhesion.

[0004] The drawbacks of the above structure are: 1. After the cable material particles in the feeding trough enter the mixing mechanism, they are piled up when they are fed onto the conveyor belt. At this time, the cable material particles at the bottom of the spray group cannot be covered by the water mist of the spray group, which reduces the cooling effect on some particles. Moreover, as the spray water source increases, the water source remaining on the conveyor belt cannot be discharged, which affects the conveying of material particles. 2. The conveyor belt feeds the cable material particles containing moisture into the collection tank for storage. The cold air passing through the bottom further cools and dries the material. However, due to the accumulation and storage of the material, the density increases, and the efficiency of air circulation in the collection tank decreases, which reduces the effectiveness of air cooling and drying.

[0005] To address the aforementioned issues, a cooling device for processing thermoplastic flame-retardant polyethylene cable materials is proposed. Utility Model Content

[0006] The main purpose of this invention is to provide a cooling device for processing thermoplastic flame-retardant polyethylene cable material, which solves the problems mentioned in the background art.

[0007] The objective of this utility model can be achieved by adopting the following technical solution: A cooling device for processing thermoplastic flame-retardant polyethylene cable material includes a cooling box and a feeding trough formed on one side of the top of the cooling box. A water-cooled perforated conveyor belt is provided at the top of the cooling box. An air-cooled perforated vibrating frame is provided directly below the water-cooled perforated conveyor belt. A discharge perforated conveyor belt is provided directly below the air-cooled perforated vibrating frame. An air-cooling component is provided through the bottom of the cooling box. The water-cooled hollow conveyor belt is provided with a material distribution screw shaft at the feeding end, and a second power unit is installed on the outside of the material distribution screw shaft. The air-cooled hollowed-out vibration frame is configured as two sets, and the air-cooled hollowed-out vibration frame is fixedly connected to the mounting frame. The vibration unit is detachably installed on the mounting frame.

[0008] Furthermore, the feeding trough is a square funnel structure, and the feeding port of the feeding trough corresponds to the middle position of the water-cooled hollow conveyor belt. The water-cooled hollow conveyor belt is a hollow metal conveyor belt, and the second power unit consists of a reducer and a servo motor.

[0009] Furthermore, a water tank is fixed in the middle of the top of the cooling box, and a spray assembly is connected to the bottom of the water tank through a pipe. Several spray heads are provided at the bottom of the spray assembly, and the spray heads are located 15cm directly above the water-cooled perforated conveyor belt.

[0010] Furthermore, the material distribution spiral shaft consists of a rotating shaft and opposing spiral blades on the rotating shaft, and the gap between the spiral blades and the hollow metal conveyor belt is 1-2 cm.

[0011] Furthermore, a through-type exhaust fan is fixed to the other side of the top of the cooling box.

[0012] Furthermore, the outer walls of the air-cooled hollowed-out vibration frame are provided with movable support shafts that are slidably connected to the inner wall of the cooling box, and the vibration unit consists of three sealed vibration motors.

[0013] Furthermore, a water storage tank is provided directly below the water-cooled perforated conveyor belt and is fixedly connected to the inner wall of the cooling box. A drain valve that penetrates the cooling box is inserted into the water storage tank.

[0014] Furthermore, the air-cooling assembly includes an air-cooled intake fan fixed to the outer wall of the cooling box, an air supply pipe assembly is inserted into the output end of the air-cooled intake fan, and an air distribution plate that penetrates the bottom of the cooling box is sealed and connected to the output end of the air supply pipe assembly. The air distribution plate is evenly laid directly below the discharge perforated conveyor belt.

[0015] The beneficial technical effects of this utility model are as follows: 1. This utility model sets a material distribution spiral shaft at the bottom of the feeding trough, which distributes the granular raw materials that are concentrated in the feeding trough and enter the cooling box. The granular raw materials are spread out from the middle to both sides and conveyed on the water-cooled hollow conveyor belt. Then, they are cooled by water mist sprayed by the top spray component. Excess water enters the water storage tank for collection. In this way, the granular raw materials are ensured to have uniform contact with the cooling water mist, and excess water is effectively recovered to avoid affecting the conveying. 2. This utility model, by setting up an air-cooled perforated vibrating frame, allows wet raw material particles falling from the perforated conveyor belt to slide down through tilting and vibration, falling onto the discharge perforated conveyor belt for external delivery. At the same time, cooling gas is supplied by the bottom air-cooled intake fan through the air supply pipe assembly and air distribution plate, passing through the discharge perforated conveyor belt and the air-cooled perforated vibrating frame in sequence, and finally being discharged from the exhaust fan. This achieves efficient air cooling and drying of the raw material particles, avoiding excessive moisture in the raw materials from affecting subsequent use. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of a preferred embodiment of a cooling device for processing thermoplastic flame-retardant polyethylene cable material according to the present invention; Figure 2 This is a rear view schematic diagram of a preferred embodiment of a cooling device for processing thermoplastic flame-retardant polyethylene cable material according to the present invention. Figure 3 This is a schematic diagram of the internal structure of a cooling device for processing thermoplastic flame-retardant polyethylene cable material according to a preferred embodiment of the present invention, after removing the cooling box. Figure 4 This is a schematic diagram of the internal structure after removing the cooling box in a preferred embodiment of a cooling device for processing thermoplastic flame-retardant polyethylene cable material according to the present invention. Figure 5 This is a schematic diagram showing the connection relationship between the air-cooled intake fan, air supply pipe assembly, and air distribution plate in a preferred embodiment of a cooling device for processing thermoplastic flame-retardant polyethylene cable material according to this utility model.

[0017] The annotations in the attached figures are explained as follows: 1. Cooling box; 2. Feeding chute; 3. Discharge perforated conveyor belt; 301. First power unit; 4. Water tank; 5. Air-cooled intake fan; 501. Air supply pipe assembly; 502. Air distribution plate; 6. Material distribution screw shaft; 601. Second power unit; 7. Spray assembly; 8. Exhaust fan; 9. Air-cooled perforated vibrating frame; 901. Movable support shaft; 902. Mounting frame; 903. Vibrating unit; 10. Water-cooled perforated conveyor belt; 1001. Water storage tank; 1002. Third power unit; 1003. Drain valve. Detailed Implementation

[0018] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0019] like Figures 1-5 As shown, this embodiment provides a cooling device for processing thermoplastic flame-retardant polyethylene cable material, including a cooling box 1 and a feeding trough 2 formed on one side of the top of the cooling box 1. A water-cooled perforated conveyor belt 10 is provided at the top of the cooling box 1, an air-cooled perforated vibrating frame 9 is provided directly below the water-cooled perforated conveyor belt 10, and a discharge perforated conveyor belt 3 is provided directly below the air-cooled perforated vibrating frame 9. An air-cooling component is provided through the bottom of the cooling box 1. A material distribution screw shaft 6 is provided at the feeding end of the water-cooled perforated conveyor belt 10, and a second power unit 601 is installed on the outside of the material distribution screw shaft 6. The air-cooled perforated vibrating frame 9 is configured as two sets, and a mounting frame 902 is fixedly connected between the air-cooled perforated vibrating frames 9. A vibrating unit 903 is detachably installed on the mounting frame 902.

[0020] In the above structure, a first power unit 301 is installed on the discharge perforated conveyor belt 3, and a third power unit 1002 is installed on the water-cooled perforated conveyor belt 10. The third power unit 1002 is located on the outer wall of the cooling box 1.

[0021] The feeding trough 2 has a square funnel structure. The feeding port of the feeding trough 2 corresponds to the middle position of the water-cooled hollow conveyor belt 10. The water-cooled hollow conveyor belt 10 is a hollow metal conveyor belt. The second power unit 601 consists of a reducer and a servo motor. The square funnel is designed to allow the incoming granular raw materials to be concentrated in the middle position of the water-cooled hollow conveyor belt 10, so that after passing through the distribution spiral shaft 6, they can be spread out to both sides, avoiding the accumulation of raw material particles that enter the long feeding trough 2 in any place, which is not conducive to the spray cooling of the spray assembly 7.

[0022] A water tank 4 is fixed in the middle of the top of the cooling box 1. A spray assembly 7 is connected to the bottom of the water tank 4 through a pipe. Several spray heads are set at the bottom of the spray assembly 7. The spray heads are located 15cm directly above the water-cooled hollow conveyor belt 10. A water pump is installed in the water tank 4. The water pump pressurizes the built-in 50℃ warm water into the atomizing nozzle to avoid the low temperature water causing internal stress in the preheated raw material particles.

[0023] The material distribution spiral shaft 6 consists of a rotating shaft and opposing spiral blades on the rotating shaft. The gap between the spiral blades and the hollow metal conveyor belt is 1-2cm. This setting is to ensure that the raw material particles can pass smoothly and evenly through the bottom of the material distribution spiral shaft 6 and be sent out by the conveyor belt.

[0024] A through exhaust fan 8 is fixed on the other side of the top of the cooling box 1. The exhaust fan 8 draws out both the air-cooled airflow and the atomized hot airflow.

[0025] The outer walls of the air-cooled hollow vibrating frame 9 are equipped with movable support shafts 901 that are slidably connected to the inner wall of the cooling box 1. The vibrating unit 903 consists of three sealed vibrating motors. The vibrating unit 903 drives the rotation of the cam through the motor to realize the excitation source, which drives the air-cooled hollow vibrating frame 9 to vibrate at low speed and low amplitude on the inner wall of the cooling box 1 through the movable support shafts 901. The inclination of the air-cooled hollow vibrating frame 9 is set to 5-10°, so as to slow down the downward speed of the granular raw material, so that it can be in contact with the air-cooling treatment for a longer time, achieving a better cooling and drying effect on the outer wall moisture.

[0026] A water storage tank 1001 is fixedly connected to the inner wall of the cooling box 1 directly below the water-cooled perforated conveyor belt 10, and a drain valve 1003 that penetrates the cooling box 1 is inserted into the water storage tank 1001.

[0027] The air-cooled assembly includes an air-cooled intake fan 5 fixed to the outer wall of the cooling box 1. An air supply pipe assembly 501 is inserted into the output end of the air-cooled intake fan 5. An air distribution plate 502 that penetrates the bottom of the cooling box 1 is sealed to the output end of the air supply pipe assembly 501. The air distribution plate 502 is evenly laid directly below the discharge perforated conveyor belt 3. The air-cooled intake fan 5 is an air compressor.

[0028] The working principle of this device is as follows: When in use, this device is connected to an external power supply and an external control device.

[0029] After being granulated, the cable material particles enter from the feeding chute 2 and fall into the middle of the top water-cooled perforated conveyor belt 10. The water-cooled perforated conveyor belt 10 is driven to rotate at a constant speed by the belt structure and drive motor of the third power unit 1002. The cable material particles pass through the bottom of the distribution spiral shaft 6, which is driven to rotate at a constant speed by the servo motor and reducer of the external second power unit 601. The distribution spiral shaft 6 pushes the cable particles accumulated at the bottom to both sides and distributes them until the particles meet the passage gap between the spiral blades on both sides and the water-cooled perforated conveyor belt 10. The cable particles are then neatly conveyed to the bottom of the spray assembly 7. The water pump in the water tank 4 injects 50°C warm water into the atomizing nozzle of the spray assembly 7 and atomizes it to cover the particle material, thereby cooling the particle material. The atomized water enters the water storage tank 1001 at the bottom through the perforations of the water-cooled perforated conveyor belt 10 and is collected. After the water level sensor detects the water level, the drain valve 1003 is opened to discharge the water.

[0030] The granular raw material falls from the end of the water-cooled perforated conveyor belt 10 onto the first set of inclined air-cooled perforated vibrating frames 9. Due to the moisture adhering to the surface of the granular raw material, and in order to ensure that the granular raw material can fully receive air cooling, the inclination of the air-cooled perforated vibrating frame 9 is set to 5-10°. Under the excitation of the vibration source of the vibrating unit 903, the granular raw material with moisture is promoted to slide down on the air-cooled perforated vibrating frame 9 and enter the second set of inclined air-cooled perforated vibrating frames 9, realizing reciprocating vibration and sliding down, and finally entering the discharge perforated conveyor belt 3 for external delivery. During this process, the external air-cooled intake fan 5 air compressor draws in high-pressure air, which is delivered to the air distribution plate 502 through the air delivery pipe group 501, passes through the discharge perforated conveyor belt 3 and the two sets of air-cooled perforated vibrating frames 9, and performs air cooling and drying treatment on the moving granular raw material.

[0031] The above structure enables a combination of spray cooling and air cooling for cable granular raw materials, greatly improving cooling efficiency while ensuring the drying effect on the moisture on the raw material granules.

[0032] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.

[0033] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

Claims

1. A cooling device for processing thermoplastic flame-retardant polyethylene cable material, comprising a cooling box (1) and a feeding trough (2) formed on one side of the top of the cooling box (1), characterized in that: The cooling box (1) is provided with a water-cooled hollow conveyor belt (10) at the top inside, and an air-cooled hollow vibration frame (9) is provided directly below the water-cooled hollow conveyor belt (10). A discharge hollow conveyor belt (3) is provided directly below the air-cooled hollow vibration frame (9). An air-cooling component is provided through the bottom inside the cooling box (1). The water-cooled hollow conveyor belt (10) is provided with a material distribution screw shaft (6) at the feeding end, and a second power unit (601) is installed on the outside of the material distribution screw shaft (6). The air-cooled hollow vibration frame (9) is configured in two sets, and the air-cooled hollow vibration frame (9) is fixedly connected to the mounting frame (902). The vibration unit (903) is detachably installed on the mounting frame (902).

2. The cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 1, characterized in that: The feeding trough (2) is a square funnel structure. The feeding port of the feeding trough (2) corresponds to the middle position of the water-cooled hollow conveyor belt (10). The water-cooled hollow conveyor belt (10) is a hollow metal conveyor belt. The second power unit (601) consists of a reducer and a servo motor.

3. The cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 1, characterized in that: A water tank (4) is fixed in the middle of the top of the cooling box (1). A spray assembly (7) is connected to the bottom of the water tank (4) through a pipe. Several spray heads are provided at the bottom of the spray assembly (7). The spray heads are located 15cm directly above the water-cooled hollow conveyor belt (10).

4. A cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 2, characterized in that: The material distribution spiral shaft (6) consists of a rotating shaft and opposite spiral blades on the rotating shaft. The gap between the spiral blades and the hollow metal conveyor belt is 1-2 cm.

5. A cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 1, characterized in that: A through-exhaust fan (8) is fixed to the other side of the top of the cooling box (1).

6. A cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 1, characterized in that: The air-cooled hollow vibration frame (9) has movable support shafts (901) on both sides of its outer wall that are slidably connected to the inner wall of the cooling box (1). The vibration unit (903) consists of three sealed vibration motors.

7. A cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 1, characterized in that: A water storage tank (1001) is fixedly connected to the inner wall of the cooling box (1) directly below the water-cooled perforated conveyor belt (10), and a drain valve (1003) is inserted into the water storage tank (1001) through the cooling box (1).

8. A cooling device for processing thermoplastic flame-retardant polyethylene cable material according to claim 1, characterized in that: The air-cooled assembly includes an air-cooled intake fan (5) fixed to the outer wall of the cooling box (1). An air supply pipe assembly (501) is inserted into the output end of the air-cooled intake fan (5). An air distribution plate (502) that penetrates the bottom of the cooling box (1) is sealed to the output end of the air supply pipe assembly (501). The air distribution plate (502) is evenly laid directly below the discharge perforated conveyor belt (3).

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