Low-energy-consumption heating system in supercritical foaming process

Abstract

The utility model discloses a low-energy-consumption heating system in a supercritical foaming process, which belongs to the supercritical foaming process technology, and comprises a support frame, a fixed shell is fixedly mounted on the support frame, a connecting port is formed in the fixed shell, and the connecting port is communicated with the fixed shell. The connecting ports are mutually connected through a fixing pipe, the inner wall of one connecting port is fixedly connected with a fixing frame, a motor is fixedly mounted on the fixing frame, and the output end of the motor is fixedly connected with a rotating rod. In the process that raw materials are pushed by the spiral push rod, hot air flows to the other side through structures such as the fixing pipe, the range needed by heating is reduced, energy consumption is reduced, meanwhile, the flowing hot air is better in heating effect, the stirring rod rotates through flowing of the air, the raw materials and foaming agents are stirred, and the stirring efficiency is improved. The raw materials and the foaming agent are mixed more uniformly, and use of the device is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of supercritical foaming technology, and in particular to a low-energy heating system in supercritical foaming process. Background Technology

[0002] Supercritical foaming is a physical foaming molding technology and also a microcellular foaming molding technology. It is used to manufacture microcellular foamed plastic products. Microcellular plastic products have high specific strength and high cost performance, which can significantly improve the dimensional accuracy of products and shorten the product development cycle. Therefore, its application is becoming more and more widespread.

[0003] In existing supercritical foaming processes, the raw materials need to be continuously heated as a whole to melt them so that they can be mixed with the foaming agent. However, continuous heating consumes too much energy, which is not conducive to the use of the equipment. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-energy heating system for supercritical foaming processes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-energy heating system for a supercritical foaming process includes:

[0007] A support frame is provided, on which a fixed outer shell is fixedly mounted. The fixed outer shell has connection ports, which are interconnected by fixed pipes. A fixed frame is fixedly connected to the inner wall of one of the connection ports, and a motor is fixedly mounted on the fixed frame. A rotating rod is fixedly connected to the output end of the motor, and a fan blade is fixedly connected to the side wall of the rotating rod. A filter screen is fixedly connected between the inner walls of the connection ports. The rotating rod passes through the filter screen and extends below it. A cleaning plate is fixedly connected to the rotating rod, and the cleaning plate is in close contact with the filter screen.

[0008] Preferably, a connecting bracket is fixedly connected between the inner walls of the other connecting port, and a connecting shaft is rotatably connected to the connecting bracket. The connecting shaft passes through the connecting bracket and extends to the bottom of the connecting bracket. A rotating impeller is fixedly installed at the top end of the connecting shaft, and a stirring rod is fixedly installed at the bottom end of the connecting shaft.

[0009] Preferably, a spiral push rod is rotatably mounted inside the fixed outer shell, and a power device fixedly connected to the spiral push rod is fixedly mounted on the spiral push rod, with the stirring rod extending between the spiral plates of the spiral push rod.

[0010] Preferably, the support frame is threaded with fixing bolts, and the support frame is fixedly connected to the fixed outer shell by the fixing bolts.

[0011] Preferably, a sealing layer is fixedly installed at the connection between the fixed tube and the fixed outer shell.

[0012] Preferably, a feed hopper communicating with the interior is fixedly installed on the fixed housing, and an extrusion port is fixedly installed on the end face of the fixed housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are: during the process of the raw material being pushed by the spiral pusher, the hot air is flowed to the other side through the fixed pipe and other structures, which reduces the range required for heating and reduces energy consumption. At the same time, the flowing hot air has a better heating effect, and the air flow causes the stirring rod to rotate, which stirs the raw material and foaming agent, making the mixture of raw material and foaming agent more uniform, which is beneficial to the use of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a low-energy heating system in a supercritical foaming process proposed in this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the motor in a low-energy heating system for a supercritical foaming process proposed in this utility model.

[0016] Figure 3 This is a side-view three-dimensional structural diagram of a low-energy heating system in a supercritical foaming process proposed in this utility model.

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0018] In the diagram: 1 Support frame, 2 Fixed outer shell, 3 Fixed pipe, 4 Spiral push rod, 5 Connecting port, 6 Fixed frame, 7 Motor, 8 Rotating rod, 9 Fan blade, 10 Filter screen, 11 Cleaning plate, 12 Connecting bracket, 13 Connecting shaft, 14 Rotating impeller, 15 Stirring rod. Detailed Implementation

[0019] Reference Figures 1-4 A low-energy heating system for supercritical foaming process, comprising:

[0020] A support frame 1 is provided, on which a fixed outer shell 2 is fixedly installed. An electric heating wire is installed inside the fixed outer shell 2 to heat and melt the raw material. The fixed outer shell 2 has a connection port 5. Two connection ports 5 are respectively installed on the side of the two feed hoppers near the extrusion port. The connection ports 5 are connected to each other by a fixed pipe 3. A fixed frame 6 is fixedly connected to the inner wall of one of the connection ports 5. A motor 7 is fixedly installed on the fixed frame 6. A rotating rod 8 is fixedly connected to the output end of the motor 7. A fan blade 9 is fixedly connected to the side wall of the rotating rod 8. A filter screen 10 is fixedly connected between the inner walls of this connection port 5. The rotating rod 8 passes through the filter screen 10 and extends to the bottom of the filter screen 10. A cleaning plate 11 is fixedly connected to the rotating rod 8. The cleaning plate 11 is in close contact with the filter screen 10.

[0021] When the motor 7 is started, the output end of the motor 7 drives the rotating rod 8 to rotate, thereby causing the fan blade 9 fixedly installed on the rotating rod 8 to rotate. When the fan blade 9 rotates, it will draw air into the connection port 5. The hot air enters the connection port 5 at the other end through the fixed pipe 3, which makes the hot air flow, improves the heating and melting efficiency, and reduces energy consumption. At the same time, the filter screen 10 can filter out the raw material particles that float with the air and prevent them from entering the fixed pipe 3. Moreover, when the rotating rod 8 rotates, the cleaning plate 11 will rotate with it. The rotation of the cleaning plate 11 will clean the filter screen 10 and scrape off the raw material particles on the filter screen 10 to facilitate processing.

[0022] A connecting bracket 12 is fixedly connected between the inner walls of another connecting port 5 and the connecting bracket 12. A connecting shaft 13 is rotatably connected to the connecting bracket 12. The connecting shaft 13 passes through the connecting bracket 12 and extends to the bottom of the connecting bracket 12. A rotating impeller 14 is fixedly installed at the top of the connecting shaft 13. The blades of the rotating impeller 14 are spiral, so that when air flows through, it can drive the rotating impeller 14 to rotate. A stirring rod 15 is fixedly installed at the bottom of the connecting shaft 13.

[0023] Hot air enters the connecting port 5 on one side of the foaming agent feed hopper through the fixed pipe 3. When the hot air passes through the rotating impeller 14, the hot air will drive the rotating impeller 14 to rotate, thereby driving the connecting shaft 13 to rotate as well, and causing the stirring rod 15 to rotate together, stirring the raw materials and foaming agent to make them evenly mixed.

[0024] A spiral push rod 4 is rotatably installed inside the fixed outer shell 2. A power device is fixedly installed on the spiral push rod 4 and fixedly connected to the spiral push rod 4. The stirring rod 15 extends between the spiral plates of the spiral push rod 4 so that the stirring rod 15 can stir the raw materials and foaming agent mixed together, so that the raw materials and foaming agent are mixed more evenly.

[0025] The support frame 1 is threaded with fixing bolts, and the support frame 1 is fixedly connected to the fixed housing 2 through the fixing bolts, so that the fixed housing 2 and other structures can be disassembled from the support frame 1 for easy maintenance of the device; a sealing layer is fixedly installed at the connection between the fixed pipe 3 and the fixed housing 2 to prevent gas leakage during the flow of hot air; a feed hopper communicating with its interior is fixedly installed on the fixed housing 2, and an extrusion port is fixedly installed on the end face of the fixed housing 2. The raw materials and foaming agent are fed into the fixed housing 2 through the feed hopper for processing, and the processed material is discharged from the extrusion port.

[0026] In this invention, during use, the raw materials and foaming agent are first fed into the fixed outer shell 2. Heating melts the raw materials, and simultaneously, under the action of the spiral pusher 4, the foaming agent and raw materials move towards the extrusion port and are eventually extruded. During processing, the motor 7 is started, and its output drives the rotating rod 8 to rotate, causing the fan blades 9 fixedly mounted on the rotating rod 8 to rotate as well. When the fan blades 9 rotate, they draw air into the connecting port 5. Hot air enters the connecting port 5 at the other end through the fixed pipe 3, allowing the hot air to circulate, improving the heating and melting efficiency, and reducing energy consumption. Simultaneously, the filter screen 10 filters out air carried by the hot air. The raw material particles that float up together are filtered out to prevent them from entering the fixed pipe 3. When the rotating rod 8 rotates, the cleaning plate 11 will also rotate. The rotation of the cleaning plate 11 will clean the filter screen 10, scraping off the raw material particles on the filter screen 10 to facilitate processing. In addition, when hot air passes through the fixed pipe 3 and enters the connecting port 5 on the side of the foaming agent feed hopper, the hot air will drive the rotating impeller 14 to rotate as it passes through the rotating impeller 14, thereby driving the connecting shaft 13 to rotate as well, causing the stirring rod 15 to rotate as well, stirring the raw materials and foaming agent to make them evenly mixed.

Claims

1. A low energy consumption heating system in a supercritical foaming process, characterized by, Include: Support frame (1), the fixed housing (2) is fixedly installed on the support frame (1), the connecting opening (5) is opened on the fixed housing (2), the connecting opening (5) is connected with each other by the fixed pipe (3), the inner wall of one of the connecting opening (5) is fixedly connected with the fixed frame (6), the motor (7) is fixedly installed on the fixed frame (6), the output end of the motor (7) is fixedly connected with the rotating rod (8), the side wall of the rotating rod (8) is fixedly connected with the fan blade (9), the inner wall between this connecting opening (5) is fixedly connected with the filter screen (10), the rotating rod (8) penetrates the filter screen (10) and stretches to the lower of the filter screen (10), the cleaning plate (11) is fixedly connected on the rotating rod (8), the cleaning plate (11) is closely attached to the filter screen (10).

2. A low energy consumption heating system in a supercritical foaming process according to claim 1, wherein, The inner wall between the other connecting opening (5) is fixedly connected with the connecting bracket (12), the connecting shaft (13) is rotatably connected on the connecting bracket (12), the connecting shaft (13) penetrates the connecting bracket (12) and stretches to the lower of the connecting bracket (12), the top end of the connecting shaft (13) is fixedly installed with the rotating impeller (14), the bottom end of the connecting shaft (13) is fixedly installed with the stirring rod (15).

3. A low energy heating system in a supercritical foaming process according to claim 2, wherein, The inside of the fixed housing (2) is rotatably installed with the screw push rod (4), the power device fixedly connected with the screw push rod (4) is fixedly installed on the screw push rod (4), the stirring rod (15) stretches between the spiral plates of the screw push rod (4).

4. A low energy heating system in a supercritical foaming process according to claim 1, wherein, The fixed bolt is threadedly connected on the support frame (1), the support frame (1) is fixedly connected with the fixed housing (2) through the fixed bolt.

5. A low energy heating system in a supercritical foaming process according to claim 1, wherein, The connecting place of the fixed pipe (3) and the fixed housing (2) is fixedly installed with the sealing layer.

6. A low energy heating system in a supercritical foaming process according to claim 1, wherein, The feeding hopper communicated with the inside of the fixed housing (2) is fixedly installed on the fixed housing (2), the extrusion port is fixedly installed on the end face of the fixed housing (2).

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