Raw material preheating device for sunshade net processing

Abstract

The utility model discloses a raw material preheating device for sunshade net processing in the related technical field of plastic preheating, which comprises a preheating cylinder and a cooling box, an inner cylinder body is arranged in the preheating cylinder, small holes smaller than plastic particles are arranged on the outer wall of the inner cylinder body, and the cooling box is arranged in the inner cylinder body. A spiral air supply pipe is arranged between the outer side of the inner barrel body and the inner wall of the preheating barrel, a plurality of air supply holes are formed in the spiral air supply pipe, the upper portion of the spiral air supply pipe is connected with the air outlet, the lower portion of the spiral air supply pipe is connected with the air inlet, a stirring rod is arranged in the preheating barrel, and the stirring rod is connected with the air inlet. A stirrer is arranged on the stirring rod in a matched mode, and a temperature sensor is installed on the stirring rod. The preheating cylinder is provided with the cooling box in a matched mode, the cooling box is used for cooling film cloth formed through melt extrusion, high-temperature gas subjected to heat exchange in the cooling process is supplied into the preheating cylinder to preheat plastic raw material particles, heat energy is recycled, and energy consumption of the preheating cylinder is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic preheating, specifically, it relates to a raw material preheating device for processing shade nets. Background Technology

[0002] The manufacturing process of shade netting consists of two parts: spinning and forming. Spinning involves melting, extruding, stretching, and spinning prepared granular raw materials into yarn at high temperatures. The yarn is then wound, cut, and woven into a net. Forming refers to the mechanical or manual cutting and sewing of the woven shade netting to create a product that meets customer requirements. Before the high-temperature melting in the spinning process, preheating is required. Preheating improves the fluidity of the plastic, resulting in more uniform curing and thus improving the quality of the finished product.

[0003] Application No. CN202420893273.2 discloses a plastic granule preheating device. The device uses hot air supplied into the preheating cylinder of a hot air fan box to preheat the plastic granules. The hot air moves upward and downward. The plastic granules accumulated at the bottom have already exchanged heat with the hot air and cooled down. Moreover, the plastic granules at the bottom are discharged first, which affects the preheating effect of the raw materials. Using a hot air fan to preheat the raw materials consumes a lot of energy.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a raw material preheating device for processing shade nets. The basic concept of the technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows:

[0006] A raw material preheating device for processing shade nets includes a preheating cylinder and a cooling box. The preheating cylinder contains an inner cylinder with small holes smaller than plastic particles on its outer wall. A spiral air supply pipe is installed between the outer side of the inner cylinder and the inner wall of the preheating cylinder. The spiral air supply pipe has multiple air supply holes. The upper part of the spiral air supply pipe is connected to an air outlet, and the lower part is connected to an air inlet. A stirring rod is installed inside the preheating cylinder, and a stirrer and a temperature sensor are mounted on the stirring rod. The cooling box is located on the side of an extrusion device. Membrane inlets and outlets are located on both sides of the cooling box. An air inlet window is located at the top of the cooling box, and an air collecting hood is located below it. An auxiliary heater is installed on a connecting pipe at the lower end of the air collecting hood. An exhaust fan is installed on the pipe between the auxiliary heater and the air inlet to extract hot air from the cooling box and supply it to the preheating cylinder.

[0007] As a further embodiment of this utility model: a support roller is provided below the membrane cloth inside the cooling box, and filter screens are provided at the air inlet and above the air collecting hood, respectively, for filtering the gas entering and exiting the cooling box and the air collecting hood.

[0008] As a further embodiment of this utility model: the auxiliary heater is provided with an auxiliary heating cavity, and thermally conductive baffles are provided on both sides of the auxiliary heating cavity. A heating chamber is formed between the thermally conductive baffles and the inner wall of the auxiliary heater. An electric heating rod is installed in the heating chamber for auxiliary heating of the gas in the auxiliary heating cavity.

[0009] As a further improvement of this utility model: the lower end of the inner cylinder is a conical structure, the spiral specification of the spiral air supply pipe is adapted to the outside of the inner cylinder, and the shape and specification of the stirrer are adapted to the inner cylinder, ensuring that the device has good stirring and preheating effects.

[0010] As a further improvement of this utility model: the lower end of the inner cylinder is provided with a discharge port, the discharge port extends to the outside of the preheating cylinder, and a discharge valve is provided at the discharge port to facilitate the discharge of preheated raw materials.

[0011] As a further improvement of this utility model: a motor is fixedly installed at the top center of the preheating cylinder, and a feeding port is provided on the side of the motor. The lower end of the feeding port extends into the inner cylinder to facilitate the addition of materials.

[0012] As a further improvement of this utility model, a preheating control box is fixedly installed on the outer wall of the preheating cylinder for monitoring the working status of the preheating cylinder.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0014] The preheating cylinder of this utility model is equipped with a cooling box, which is used to cool the melt-extruded film. During the cooling process, the high-temperature gas that has undergone heat exchange is supplied to the preheating cylinder to preheat the plastic raw material particles, thereby recovering heat energy and reducing the energy consumption of the preheating cylinder.

[0015] This utility model has an auxiliary heater installed on the gas supply pipe. When the heat of the cooling exchange gas cannot meet the heat demand of the preheating cylinder, auxiliary heating can be performed. The preheating cylinder is equipped with an inner cylinder, and the outer wall of the inner cylinder is provided with small holes smaller than plastic particles. With the help of the spiral gas supply pipe, the plastic raw material can be heated in multiple directions and angles to achieve uniform preheating of the plastic raw material.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is the front view of the present invention;

[0020] Figure 3 This is a schematic diagram of the interior of the cooling box of this utility model;

[0021] Figure 4 This is a schematic diagram of the interior of the preheating cylinder of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the auxiliary heater of this utility model;

[0023] Figure 6 This is a connection block diagram of some of the components of this utility model.

[0024] In the diagram: 1. Preheating cylinder; 2. Feeding port; 3. Motor; 4. Air outlet; 5. Air inlet; 6. Exhaust fan; 7. Cooling box; 8. Air inlet window; 9. Membrane cloth inlet and outlet; 10. Air collection hood; 11. Auxiliary heater; 12. Discharge port; 13. Discharge valve; 14. Support roller; 15. Filter screen; 16. Spiral air supply pipe; 17. Inner cylinder; 18. Stirring rod; 19. Agitator; 20. Temperature sensor; 21. Auxiliary heating cavity; 22. Heating chamber; 23. Heating rod; 24. Preheating control box.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] like Figures 1 to 6As shown, a raw material preheating device for processing shade nets includes a preheating cylinder 1 and a cooling box 7. The preheating cylinder 1 contains an inner cylinder 17 with small holes smaller than plastic particles on its outer wall. A spiral air supply pipe 16 is installed between the outer side of the inner cylinder 17 and the inner wall of the preheating cylinder 1. The spiral air supply pipe 16 has multiple air supply holes. The upper part of the spiral air supply pipe 16 is connected to an air outlet 4, and the lower part is connected to an air inlet 5. A stirring rod 18 is installed inside the preheating cylinder 1. The device is equipped with a stirrer 19, a temperature sensor 20 is installed on the stirring rod 18, a cooling box 7 is provided on the side of the extrusion device, a membrane cloth inlet and outlet 9 are provided on both sides of the cooling box 7, an air inlet 8 is provided on the top of the cooling box 7, an air collector hood 10 is provided below the cooling box 7, an auxiliary heater 11 is provided on the connecting pipe at the lower end of the air collector hood 10, and an exhaust fan 6 is provided on the pipe between the auxiliary heater 11 and the air inlet 5 to extract the hot air in the cooling box 7 and supply it to the preheating cylinder 1.

[0028] The cooling box 7 has a support roller 14 located below the membrane cloth, and filter screens 15 are installed at the air inlet 8 and above the air collector hood 10 to filter the gas entering and exiting the cooling box 7 and the air collector hood 10.

[0029] An auxiliary heating chamber 21 is provided inside the auxiliary heater 11. Heat-conducting baffles are provided on both sides of the auxiliary heating chamber 21. A heating chamber 22 is formed between the heat-conducting baffles and the inner wall of the auxiliary heater 11. An electric heating rod 23 is installed in the heating chamber 22 to assist in heating the gas in the auxiliary heating chamber 21.

[0030] The lower end of the inner cylinder 17 has a conical structure. The spiral specification of the spiral air supply pipe 16 is adapted to the outside of the inner cylinder 17. The shape and specification of the stirrer 19 are adapted to the inner cylinder 17 to ensure that the device has good stirring and preheating effects.

[0031] The lower end of the inner cylinder 17 is provided with a discharge port 12, which extends to the outside of the preheating cylinder 1. A discharge valve 13 is provided at the discharge port 12 to facilitate the discharge of preheated raw materials.

[0032] A motor 3 is fixedly installed at the top center of the preheating cylinder 1. A feeding port 2 is provided on the side of the motor 3. The lower end of the feeding port 2 extends into the inner cylinder 17 to facilitate the addition of materials.

[0033] A preheating control box 24 is fixedly installed on the outer wall of the preheating cylinder 1 to monitor the working status of the preheating cylinder 1.

[0034] The working principle of this utility model is as follows: The extruded film is in a high temperature state. When it passes through the cooling box 7, the exhaust fan 6 works, and the outside air enters the cooling box 7 through the air inlet 8 to cool the film. After heat exchange, the air is in a state higher than normal temperature. After entering the air collection hood 10, it is supplied to the air inlet 5 and then enters the spiral air supply pipe 16 to preheat the raw material in the inner cylinder 17. The spiral air supply pipe 16 is provided with multiple air supply holes for multi-directional and multi-angle heating of the plastic raw material. With the help of the stirring device, the plastic raw material is preheated evenly. The inner cylinder 17 is made of metal. The friction between plastic and metal can generate heat quickly. Metal has good thermal conductivity. When plastic rubs against metal, the heat generated by friction is quickly conducted by the metal, causing the temperature to rise. Therefore, friction can also be used to increase the temperature of the raw material during the stirring process. A temperature sensor 20 is provided on the stirring rod 18 to monitor the preheating status.

[0035] When the basic preheating structure cannot meet the preheating requirements of the raw materials, the auxiliary heater 11 is turned on to provide auxiliary heating to ensure the preheating effect of the plastic raw materials.

[0036] The preheating cylinder 1 of this utility model is equipped with a cooling box 7, which is used to cool the melt-extruded film. During the cooling process, the high-temperature gas after heat exchange is supplied to the preheating cylinder 1 to preheat the plastic raw material particles, recover heat energy, and reduce the energy consumption of the preheating cylinder 1. An auxiliary heater 11 is provided on the gas supply pipe. When the heat of the cooling exchange gas cannot meet the heat demand of the preheating cylinder 1, auxiliary heating can be provided. The preheating cylinder 1 is provided with an inner cylinder 17. The outer wall of the inner cylinder 17 is provided with small holes smaller than the plastic particles. With the help of the spiral gas supply pipe 16, the plastic raw material can be heated from multiple directions and angles to achieve uniform preheating of the plastic raw material.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A raw material preheating device for processing shade nets, comprising a preheating cylinder (1) and a cooling box (7), characterized in that, The preheating cylinder (1) is provided with an inner cylinder (17). The outer wall of the inner cylinder (17) is provided with small holes smaller than plastic particles. A spiral air supply pipe (16) is provided between the outer side of the inner cylinder (17) and the inner wall of the preheating cylinder (1). The spiral air supply pipe (16) is provided with multiple air supply holes. The upper part of the spiral air supply pipe (16) is connected to the air outlet (4), and the lower part of the spiral air supply pipe (16) is connected to the air inlet (5). A stirring rod (18) is provided inside the preheating cylinder (1). The stirring rod (18) is equipped with a stirring rod. A stirrer (19) is provided, a temperature sensor (20) is installed on the stirring rod (18), a cooling box (7) is provided on the side of the extrusion device, a membrane cloth inlet and outlet (9) are provided on both sides of the cooling box (7), an air inlet window (8) is provided on the top of the cooling box (7), an air collector hood (10) is provided below the cooling box (7), an auxiliary heater (11) is provided on the connecting pipe at the lower end of the air collector hood (10), and an exhaust fan (6) is provided on the pipe between the auxiliary heater (11) and the air inlet (5).

2. The raw material preheating device for processing shade nets according to claim 1, characterized in that, A support roller (14) is provided in the cooling box (7) below the membrane cloth, and filter screens (15) are provided at the air inlet (8) and above the air collecting hood (10).

3. The raw material preheating device for processing shade nets according to claim 2, characterized in that, The auxiliary heater (11) is provided with an auxiliary heating cavity (21), and heat-conducting baffles are provided on both sides of the auxiliary heating cavity (21). A heating chamber (22) is formed between the heat-conducting baffles and the inner wall of the auxiliary heater (11), and an electric heating rod (23) is installed in the heating chamber (22).

4. The raw material preheating device for processing shade nets according to claim 3, characterized in that, The lower end of the inner cylinder (17) is a conical structure. The spiral specification of the spiral air supply pipe (16) is adapted to the outside of the inner cylinder (17). The shape and specification of the stirrer (19) are adapted to the inner cylinder (17).

5. The raw material preheating device for processing shade nets according to claim 4, characterized in that, The lower end of the inner cylinder (17) is provided with a discharge port (12), which extends to the outside of the preheating cylinder (1), and a discharge valve (13) is provided at the discharge port (12).

6. The raw material preheating device for processing shade nets according to claim 5, characterized in that, A motor (3) is fixedly installed at the top center of the preheating cylinder (1), and a feeding port (2) is provided on the side of the motor (3). The lower end of the feeding port (2) extends into the inner cylinder (17).

7. The raw material preheating device for processing shade nets according to claim 6, characterized in that, A preheating control box (24) is fixedly installed on the outer wall of the preheating cylinder (1).

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