Rapid cooling equipment for modified plastics

Abstract

The utility model relates to the technical field of plastic production, and particularly discloses rapid cooling equipment for modified plastics. According to the scheme, the rapid cooling box is additionally arranged between the screw machine and the air cooling equipment, the rapid cooling box is provided with a plurality of water inlet pipes, temperature adjustment can be achieved by selecting coolants such as circulating water, chilled water and tap water, control valves are arranged on the water inlet pipes, and the control valves are arranged on the water inlet pipes. And a square cooling pipeline through which the modified plastic passes is arranged in the rapid cooling box. Compared with traditional modified plastic rapid cooling equipment, the rapid cooling equipment has the advantages that the independent rapid cooling box is arranged, rapid cooling can be achieved, then the air cooling length is greatly reduced, and the problem that an existing cooling device is too long in occupied area is effectively solved. And the problems that the modified plastic absorbs water due to direct contact between the plastic and water, the drying time is prolonged, the plastic degradation period is changed and the like can also be solved.

Description

Technical Field

[0001] This solution belongs to the technical field of plastic production, and specifically relates to a rapid cooling device for modified plastics. Background Art

[0002] Modified plastics generally refer to plastics that have been modified through physical, chemical, or mechanical processing methods. The purpose of modification is to improve the specific properties of plastics and make them more suitable for specific applications. The emergence of modified plastics has greatly reduced the dependence of industries such as automobiles and daily necessities on steel, and modified plastic products are lighter and more environmentally friendly.

[0003] Due to the limited performance of single plastic products, modification is usually required for better utilization. Plastics are generally modified together with one or more other plastics or fillers such as bamboo powder, starch, calcium carbonate, reed powder, and talc powder. Generally, the plastic modification process consists of three major systems: a twin-screw extruder, an air-cooled conveyor belt, or a water-cooled tank, and a pelletizer. Since the outlet temperature of the twin-screw extruder is relatively high, generally 130 - 230 °C (adjusted according to the melting point of the modified raw materials), in order to reduce the temperature of the modified product and ensure the best pelletizing temperature at the pelletizer (generally cooled to room temperature for pelletizing, if the temperature is high, the material strip will be too soft and sticky), it is required that the air-cooled conveyor belt has a sufficient cooling length (generally 9 - 15 meters) to achieve the purpose of cooling to room temperature, and a too long cooling length will occupy more floor area.

[0004] Therefore, it is necessary to design a cooling device that can ensure the cooling effect and occupy less floor area. Utility Model Content

[0005] The purpose of this solution is to provide a rapid cooling device for modified plastics to solve the problem of excessive floor area of existing cooling devices.

[0006] To achieve the above purpose, this solution provides a twin-screw extruder for extruding modified plastics; an air-cooled conveyor belt for cooling and transporting modified plastics; the twin-screw extruder and the air-cooled conveyor belt are connected in sequence;

[0007] This solution adds a rapid cooling box. The rapid cooling box is arranged between the twin-screw extruder and the air-cooled conveyor belt. The rapid cooling box is provided with a plurality of water inlet pipes, and control valves are provided on the water inlet pipes to adjust the temperature of the box by introducing circulating water, chilled water, or tap water. Control valves are provided on the water inlet pipes, and a cooling square pipe for the passage of modified plastics is provided inside the rapid cooling box.

[0008] The principle and technical effect of this solution are as follows:

[0009] This solution realizes the rapid cooling of modified plastics by setting up an independent rapid cooling box and adding a water-cooling step to exchange heat with the square cooling pipeline, thereby greatly reducing the length of air cooling and effectively solving the problem of the excessive floor area of the existing cooling device.

[0010] Furthermore, the cooling pipeline is a square pipeline. The square pipeline has a larger contact area with the extruded plastic strip, resulting in better cooling effect.

[0011] Furthermore, the cooling pipeline is a stainless-steel pipeline. It is strong and durable, does not rust, and has better usage effect.

[0012] Furthermore, a thermometer is provided inside the rapid cooling box, and a controller is also included. Both the flow regulating valve and the thermometer are electrically connected to the controller. In this way, coolants such as circulating water, chilled water, and tap water can be selected according to different required cooling temperatures to achieve temperature regulation.

[0013] Furthermore, wheels are provided at the bottom of the rapid cooling box. This is particularly beneficial for scenarios where the production process needs to be frequently changed or equipment maintenance is required, which not only saves manpower and material resources but also improves production efficiency and space utilization efficiency, providing convenience for the flexible production and layout optimization of the factory.

[0014] Furthermore, an overflow pipe and a bottom drain valve are provided on the rapid cooling box.

[0015] When the cooling work is completed, the cooling water in the rapid cooling box can be drained, which is convenient for cleaning the inside of the water tank, removing possible accumulated impurities or dirt, and maintaining the purity and cooling efficiency of the cooling water. In addition, through the drain valve, it is also possible to conveniently empty the rapid cooling box when changing the type of cooling water (such as switching from tap water to circulating cooling water) or during equipment maintenance, ensuring the normal operation of the equipment and extending its service life.

[0016] Furthermore, a filter screen is also provided inside the water inlet pipe.

[0017] The water supply filter screen can effectively filter out impurities and particulate matters in the cooling water, maintain the purity of the cooling water, prevent these impurities from blocking the water path or depositing in the rapid cooling box, and affect the cooling efficiency and the long-term operation stability of the equipment.

[0018] Furthermore, a control system is also included. The control system includes a temperature sensor, a temperature acquisition module, a text display, a central processor, and a flow regulating valve. The temperature sensor is electrically connected to the temperature acquisition module, and the temperature acquisition module, the text display, the temperature control switch, and the flow regulating valve are all electrically connected to the central processor. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0020] Figure 2 is Figure 1 a schematic structural diagram of the rapid cooling box in

[0021] Figure 3 is Figure 2 a schematic structural diagram of the cooling pipeline in

[0022] Figure 4 is a control flow chart of the temperature in the present utility model.

[0023] The following will be further described in detail through specific embodiments:

[0024] The reference numerals in the accompanying drawings of the specification include: twin-screw extruder 10, rapid cooling box 20, thermometer 21, wheels 22, box cover 23, handle 24, water tank body 25, support feet 26, air-cooled conveyor belt 30, fan 31, pelletizer 40, modified plastic strip 50, and cooling pipeline 60. Specific Embodiments

[0025] The embodiment is basically as shown in the attached Figure 1 figure:

[0026] Please refer to Figure 1 , the present invention provides a technical solution: a rapid cooling device for modified plastics, which from top to bottom (arranged from left to right during normal operation) are: twin-screw extruder 10, rapid cooling box 20, air-cooled conveyor belt, and pelletizer 40. The twin-screw extruder 10 is used to extrude the modified plastic strip 50, which then first enters the rapid cooling box 20 for cooling, and then enters the air-cooled conveyor belt for air cooling until it is completely cooled. After that, it enters the pelletizer 40 for pelletizing. The power is provided by the air-cooled conveyor belt, and the twin-screw extruder 10, air-cooled conveyor belt, and pelletizer 40 all adopt existing equipment.

[0027] The core innovation point of this solution is the addition of the rapid cooling box 20. As shown in Figure 2 the figure, it mainly includes a water tank body 25 and 4 support feet 26 for supporting the water tank body 25. Wheels 22 are also provided on the support feet 26, which can facilitate movement. As shown in Figure 3 the figure, a cooling pipeline 60 through which the modified plastic strip 50 can pass is horizontally arranged inside the water tank body 25. The cooling pipeline 60 is a square pipeline, which is more suitable for the extruded plastic compared to a circular one, has a larger contact area, and better cooling effect. A box cover 23 is also provided on the water tank body, and a handle 24 is provided on the box cover 23, so that the box cover 23 can be conveniently opened to check the situation inside the water tank body 25.

[0028] A plurality of water inlet pipes are provided at the bottom of the water tank body 25, and a control valve is separately provided on each water inlet pipe to communicate with different pipes. In order to ensure the cooling effect and reduce impurities, a filter screen is also provided in the water inlet pipe. A thermometer 21 is provided in the cooling tank, and a controller is also included. The flow regulating valve and the thermometer 21 are both electrically connected to the controller. In this way, coolants such as circulating water, chilled water, and tap water can be selected according to different required cooling temperatures to achieve temperature adjustment. A drain valve is also provided at the bottom of the rapid cooling tank 20, which can conveniently drain the residual water in the rapid cooling tank 20. An overflow pipe is also provided on the rapid cooling tank 20 to prevent irregular overflow after the water is full.

[0029] A control system is also included. The control system includes a temperature sensor, a temperature acquisition module, a text display, a central processor, and a flow regulating valve. The temperature sensor is electrically connected to the temperature acquisition module, and the temperature acquisition module, the text display, the temperature control switch, and the flow regulating valve are all electrically connected to the central processor. As Figure 4 shown, after the temperature of the temperature sensor is acquired by the temperature acquisition module, it is sent to the central processor, and the central processor controls the flow regulating valve. In this way, coolants such as circulating water, chilled water, and tap water can be selected according to different required cooling temperatures to achieve temperature adjustment, and at the same time, it is adjusted with the assistance of the flow regulating valve. The text display is used to display the temperature information to facilitate the operator to view.

[0030] Compared with the traditional cooling device, in this solution, by setting up an independent rapid cooling tank 20 and adding a water cooling step, rapid cooling can be achieved, reducing the size of the traditional air-cooled conveyor belt 30 from 9 - 15 meters to 3 - 5 meters. Adding a rapid cooling device of about 1 meter, the size is much smaller than the traditional air-cooled conveyor belt 30, effectively reducing the problem of the overly long floor area of the existing cooling device.

[0031] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solution 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 described in the specification can be used to interpret the content of the claims.

Claims

1. A modified plastic rapid cooling device, comprising: The invention discloses a conventional twin-screw extruder for extruding modified plastics; an air-cooled conveyor belt for cooling and transmitting modified plastics; the twin-screw extruder and the air-cooled conveyor belt are connected in sequence; the invention is characterized in that the invention also comprises a rapid cooling box, the rapid cooling box is arranged between the twin-screw extruder and the air-cooled conveyor belt, the rapid cooling box is provided with a plurality of water inlet pipes, each of the water inlet pipes is provided with a control valve which can adjust the temperature of the box by introducing circulating water, chilled water and tap water, and a cooling pipe for passing the modified plastic is arranged in the rapid cooling box.

2. The modified plastic rapid cooling device according to claim 1, characterized in that: The cooling pipe is a square pipe.

3. The modified plastic rapid cooling device according to claim 2, characterized in that: The cooling pipeline is made of stainless steel.

4. The modified plastic rapid cooling device according to claim 1, characterized in that: The bottom of the rapid cooling box is provided with wheels.

5. The modified plastic rapid cooling device according to claim 1, characterized in that: The rapid cooling box is provided with a bottom drain valve and an overflow pipe.

6. The modified plastic rapid cooling device according to claim 1, characterized in that: A filter screen is also arranged in the water inlet pipe.

7. The modified plastic rapid cooling device according to claim 1, characterized in that: It also includes a control system, which includes a temperature sensor, a temperature acquisition module, a text display, a central processing unit and a flow control valve. The temperature sensor is electrically connected to the temperature acquisition module, and the temperature acquisition module, the text display, the temperature control switch and the flow control valve are all electrically connected to the central processing unit.

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