Air cooling mechanism for low-smoke halogen-free flame-retardant material

Abstract

The utility model relates to the field of low-smoke halogen-free flame-retardant material production, and discloses an air cooling mechanism for a low-smoke halogen-free flame-retardant material, which comprises a cyclone dust collector, the cyclone dust collector is fixed above a support, an isolation component is mounted in an air outlet above the cyclone dust collector, and the isolation component is fixed above the support. A cyclone dust collector is arranged on the air inlet of the induced draft fan, a feeding pipe is installed on the air inlet of the cyclone dust collector through a flange, the end, away from the cyclone dust collector, of the feeding pipe is connected with an air outlet pipeline of the air feeder, and flame retardant materials are arranged in the feeding pipe and can enter the cyclone dust collector under the action of the induced draft fan and the air feeder. And the cold air flow in the flame retardant material can be fully contacted with the flame retardant material, so that the flame retardant material can be fully cooled.

Description

Technical Field

[0001] The utility model relates to the field of low-smoke halogen-free flame retardant production, in particular to an air cooling mechanism for low-smoke halogen-free flame retardant. Background Art

[0002] The granulation method of low-smoke halogen-free flame retardant fuel pellets is usually to use an extruder to mix, plasticize and draw the raw materials, and then use a pelletizer to cut the plastic strips into pellets of a certain length. After production and molding, these pellets usually need to be cooled before packaging due to their high temperature.

[0003] The Chinese utility model patent with announcement number CN215242120U records an air cooling device for the production of halogen-free flame-retardant polyolefin cable materials that is easy to load. The device drives the gears to rotate through a motor, which drives the fixed tube to rotate and drives the round tube to rotate. The spiral blades rotate to transport the raw materials to the right. At the same time, the motor drives the fan to rotate, blowing air into the round tube to cool the raw materials during the flipping and conveying process in the round tube, thereby increasing the time the device takes to cool the raw materials.

[0004] With respect to the above-mentioned related technologies, the inventor believes that there are the following defects: in the above-mentioned structure, a rotating spiral blade is arranged inside the circular tube, wherein the spiral blade is relatively small in width and its outer surface contacts the inner wall of the circular tube, and the materials will slowly move forward along the spiral blade, and these materials will also pile up together, while the cold wind blows from top to bottom and from front to back, which makes it impossible for the materials at the bottom to contact with the cold wind, and the overall cooling effect is not very ideal. For this reason, we designed an air cooling mechanism for low-smoke halogen-free flame retardant. Utility Model Content

[0005] In order to solve the technical problem that the material at the bottom cannot be in contact with the cold air and the overall cooling effect is not very ideal, the utility model provides an air cooling mechanism for low-smoke and halogen-free flame retardant.

[0006] The utility model is implemented by the following technical scheme: an air cooling mechanism for low-smoke and halogen-free flame retardant fuel, comprising a cyclone dust collector, the cyclone dust collector is fixed above a bracket, an isolation component is installed inside the air outlet above the cyclone dust collector, and a feeding pipe is installed on the air inlet of the cyclone dust collector through a flange, and the end of the feeding pipe away from the cyclone dust collector is connected to the air outlet duct of the blower.

[0007] As a further improvement of the above scheme, a feeding port is provided above one end of the feeding pipe close to the blower, and the feeding port is connected to the feeding port of the pelletizer. The connection between the feeding port and the feeding port of the pelletizer can also be equipped with a corresponding feeding mechanism as needed to adjust the amount of material entering the feeding port to ensure that too much material does not enter, resulting in a reduced air cooling effect. The flame retardant particles will enter the feeding pipe through the feeding port, and then enter the cyclone dust collector under the action of the blower and the induced draft fan. Particles with larger particle size will slide along its inner wall, and fine dust particles will be discharged through the air outlet, and the cold air therein can also cool the particles.

[0008] As a further improvement of the above scheme, the feeding pipe includes an inclined pipe section and a horizontal section, wherein the upper part of the inclined pipe section is connected to the air inlet of the cyclone dust collector through a diameter change, and the angle of the inclined pipe section is 20-50 degrees, so that the particles can enter the cyclone dust collector along the inclined pipe section;

[0009] The feeding port is arranged on the horizontal section, and the right side of the horizontal section is designed to be raised upward, the left end of the horizontal section is lower than the right end, and the cold air flows from right to left, ensuring that the material does not enter the blower.

[0010] As a further improvement of the above scheme, the air outlet at the top of the cyclone dust collector is connected to the air inlet of an external induced draft fan through a connecting pipe, and the connecting pipe and the air outlet at the top of the cyclone dust collector are softly connected through a connecting wind bag. The length of the connecting wind bag is greater than the distance between the connecting pipe and the air outlet. The cyclone dust collector and the induced draft fan will vibrate during operation, and the connecting wind bag that is not in a straight state will not crack due to vibration. The design of the connecting wind bag also facilitates its removal, thereby facilitating the inspection and maintenance of the internal isolation components.

[0011] As a further improvement of the above scheme, the isolation assembly includes a sleeve, a cleaning scraper, a screening net and a turbine, wherein the sleeve is arranged inside the air outlet at the top of the cyclone dust collector, two groups of bearing frames are fixed inside the sleeve, and the turbine is rotatably installed inside the sleeve through the bearing frames, and the airflow inside the cyclone dust collector forms an outer vortex and an inner vortex, and the inner vortex can make the turbine rotate, thereby driving the cleaning scraper below to rotate.

[0012] As a further improvement of the above scheme, the top of the outer ring surface of the sleeve extends outward to form a mounting ring, and the sleeve is fixed to the flange of the air outlet at the top of the cyclone dust collector by the mounting ring and bolts, and the outer diameter of the sleeve matches the inner diameter of the air outlet, which is convenient for the installation and disassembly of the isolation assembly, and further facilitates subsequent maintenance.

[0013] As a further improvement of the above scheme, a screening net is installed at the bottom end of the sleeve by screws. The design of the screening net can prevent the flame retardant particles with larger particle size from entering the induced draft fan through the air outlet, causing no damage to the fan and no loss of the flame retardant particles. The shaft of the turbine is extended downward to form an extension shaft, and the outer ring surface of the extension shaft is provided with a plurality of cleaning scrapers distributed in a ring shape.

[0014] As a further improvement of the above scheme, a soft rubber brush is provided on the bottom surface of the cleaning scraper, and the soft rubber brush is in contact with the upper surface of the screening net. When the turbine rotates, the cleaning scraper can rotate, and the soft rubber brush can extend into the aperture of the screening net to clean it, so that the screening net will not be blocked by dust and its normal operation will not be affected.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model places the flame retardant material in the feeding pipe, so that it can enter the cyclone dust collector under the action of the induced draft fan and the blower, and the cold air flow inside it will fully contact with the flame retardant material, thereby being able to fully cool it;

[0017] 2. By setting an isolation component at the top of the cyclone dust collector, the screening net can prevent the fuel-retardant particles with larger particle size from entering the induced draft fan through the air outlet, causing no damage to it and no loss of the amount of fuel-retardant particles. The design of the turbine and the cleaning scraper can clean the aperture of the screening net, so that the screening net will not be blocked by dust and will not affect its normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an air cooling mechanism for low-smoke, halogen-free flame retardant provided by the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the connection between the medium cyclone dust collector and the connecting pipeline;

[0020] Figure 3 for Figure 1 Schematic diagram of the interior of a medium cyclone dust collector;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the isolation component.

[0022] Description of main symbols:

[0023] 1. Cyclone dust collector; 11. Bracket; 12. Air outlet; 13. Air inlet; 2. Isolation assembly; 21. Socket; 211. Mounting ring; 22. Bearing frame; 23. Turbine; 24. Screening net; 25. Cleaning scraper; 26. Extension shaft; 3. Feeding pipe; 31. Feeding port; 4. Blower; 5. Connect air bag. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Example:

[0026] Please combine Figure 1-Figure 4 The present embodiment provides an air cooling mechanism for low-smoke halogen-free flame retardant fuel, comprising a cyclone dust collector 1, which is fixed above a bracket 11, an isolation assembly 2 is installed inside an air outlet 12 above the cyclone dust collector 1, and a feeding pipe 3 is installed on an air inlet 13 of the cyclone dust collector 1 through a flange, and an end of the feeding pipe 3 away from the cyclone dust collector 1 is connected to an air outlet duct of a blower 4.

[0027] A feeding port 31 is provided above one end of the feeding pipe 3 close to the air blower 4, and the feeding port 31 is connected to the feeding port of the pelletizer. The connection between the feeding port 31 and the feeding port of the pelletizer can also be equipped with a corresponding feeding mechanism as needed to adjust the amount of material entering the feeding port 31 to ensure that too much material does not enter, resulting in a reduced air cooling effect. The flame retardant particles will enter the feeding pipe 3 through the feeding port, and then enter the cyclone dust collector 1 under the action of the air blower 4 and the induced draft fan. Particles with larger particle sizes will slide along its inner wall, while fine dust particles will be discharged through the air outlet 12, and the cold air therein can also cool the particles.

[0028] The feeding pipe 3 includes an inclined pipe section and a horizontal section, wherein the upper portion of the inclined pipe section is connected to the air inlet 13 of the cyclone dust collector 1 through a diameter change, and the angle of the inclined pipe section is 20-50 degrees, so that the particles can enter the cyclone dust collector 1 along the inclined pipe section;

[0029] The feed port 31 is arranged on the horizontal section, and the right side of the horizontal section is designed to be raised upward, the left end of the horizontal section is lower than the right end, and the cold air flows from right to left to ensure that the material does not enter the blower 4.

[0030] The air outlet 12 at the top of the cyclone dust collector 1 is connected to the air inlet of an external induced draft fan through a connecting pipe, and the connecting pipe and the air outlet 12 at the top of the cyclone dust collector 1 are flexibly connected through a connecting air bag 5. The length of the connecting air bag 5 is greater than the distance between the connecting pipe and the air outlet 12. The cyclone dust collector 1 and the induced draft fan will vibrate when they are in operation, and the connecting air bag 5 that is not in a straight state will not crack due to the vibration. The design of the connecting air bag 5 also makes it easy to remove it, thereby facilitating the inspection and maintenance of the internal isolation component 2.

[0031] The isolation assembly 2 includes a sleeve tube 21, a cleaning scraper 25, a screening net 24 and a turbine 23, wherein the sleeve tube 21 is arranged inside the air outlet 12 at the top of the cyclone dust collector 1, two sets of bearing frames 22 are fixed inside the sleeve tube 21, and the turbine 23 is rotatably installed inside the sleeve tube 21 through the bearing frames 22. The airflow inside the cyclone dust collector 1 forms an outer vortex and an inner vortex. The inner vortex can make the turbine 23 rotate, and then can drive the cleaning scraper 25 below to rotate.

[0032] The top of the outer ring surface of the sleeve 21 extends outward to form a mounting ring 211. The sleeve 21 is fixed to the flange of the air outlet 12 at the top of the cyclone dust collector 1 through the mounting ring 211 and bolts, and the outer diameter of the sleeve 21 matches the inner diameter of the air outlet 12, which is convenient for the installation and disassembly of the isolation assembly 2, and further facilitates subsequent maintenance.

[0033] A screening net 24 is installed at the bottom end of the sleeve 21 by screws. The design of the screening net 24 can prevent the flame retardant particles with larger particle size from entering the induced draft fan through the air outlet 12, without causing damage to it, and without causing loss of the flame retardant particles. The shaft of the turbine 23 is extended downward to form an extension shaft 26, and the outer ring surface of the extension shaft 26 is provided with a plurality of cleaning scrapers 25 distributed in a ring shape.

[0034] A soft rubber brush is provided on the bottom surface of the cleaning scraper 25, and the soft rubber brush contacts the upper surface of the screening net 24. When the turbine 23 rotates, the cleaning scraper 25 can rotate, and the soft rubber brush can extend into the aperture of the screening net 24 to clean it, so that the screening net 24 will not be blocked by dust and its normal operation will not be affected.

[0035] The implementation principle of an air cooling mechanism for low-smoke and halogen-free flame retardant materials in the embodiment of the present application is to connect the feed port of the pelletizer with the feed port 31 of the feed pipe 3, and the connection between the feed port 31 and the feed port of the pelletizer can also be equipped with a corresponding feed mechanism as needed to adjust the amount of air entering the feed port to ensure that too much air does not enter and cause a decrease in the air cooling effect, and the air outlet 12 of the cyclone dust collector 1 is connected to the air bag 5 and the connecting pipe with the air inlet of the external induced draft fan, the particles in the pelletizer will enter the feed pipe 3 through the feed port 31, and under the action of the blower 4 and the induced draft fan, these particles will enter the cyclone dust collector 1 and move along the The inner wall of the cyclone dust collector 1 moves downward in an outer spiral motion. Since the particles themselves have a large mass, they will slide down along the inner wall of the cyclone dust collector 1 and be discharged through the discharge port at the bottom. After moving to the bottom, the airflow containing fine dust will move upward in an inner spiral motion and flow out through the air outlet 12. When passing through the isolation component 2, the fuel-retardant particles attached therein will be blocked, and the fine dust will pass smoothly. The inner vortex can make the turbine rotate, which can drive the cleaning scraper 25 below to rotate. The soft rubber brush can extend into the aperture of the screening net 24 to clean it, so that the screening net 24 will not be blocked by dust and will not affect its normal operation.

[0036] By placing the flame retardant in the feeding pipe 3, the flame retardant can enter the cyclone dust collector 1 under the action of the induced draft fan and the blower 4, and the cold air flow inside the flame retardant will fully contact with the flame retardant, thereby being able to fully cool it;

[0037] By setting an isolation component 2 at the top of the cyclone dust collector 1, the screening net 24 therein can prevent the fuel-retardant particles with larger particle size from entering the induced draft fan through the air outlet 12, without causing damage to it, and without causing loss in the amount of fuel-retardant particles. The design of the turbine 23 and the cleaning scraper 25 can clean the aperture of the screening net 24, so that the screening net 24 will not be blocked by dust and will not affect its normal operation.

[0038] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An air cooling mechanism for low-smoke halogen-free flame retardant, comprising a cyclone dust collector (1), wherein the cyclone dust collector (1) is fixed above a bracket (11), and is characterized in that: An isolation assembly (2) is installed inside the air outlet (12) above the cyclone dust collector (1), and a feeding pipe (3) is installed on the air inlet (13) of the cyclone dust collector (1) via a flange, and the end of the feeding pipe (3) away from the cyclone dust collector (1) is connected to the air outlet duct of the blower (4).

2. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 1, characterized in that: A feeding port (31) is provided above one end of the feeding pipe (3) close to the blower (4), and the feeding port (31) is connected to a feeding port of the pelletizer.

3. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 2, characterized in that: The feeding pipe (3) comprises an inclined pipe section and a horizontal section, wherein the upper portion of the inclined pipe section is connected to the air inlet (13) of the cyclone dust collector (1) via a diameter change, and the angle of the inclined pipe section is 20-50 degrees; The feed port (31) is arranged on a horizontal section, and the right side of the horizontal section is designed to be raised upward.

4. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 1, characterized in that: The air outlet (12) at the top of the cyclone dust collector (1) is connected to the air inlet of an external induced draft fan via a connecting pipe, and the connecting pipe and the air outlet (12) at the top of the cyclone dust collector (1) are flexibly connected via a connecting air bag (5).

5. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 1, characterized in that: The isolation assembly (2) comprises a sleeve tube (21), a cleaning scraper (25), a screening net (24) and a turbine (23), wherein the sleeve tube (21) is arranged inside the air outlet (12) at the top end of the cyclone dust collector (1), two groups of bearing frames (22) are fixed inside the sleeve tube (21), and the turbine (23) is rotatably mounted inside the sleeve tube (21) through the bearing frames (22).

6. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 5, characterized in that: The top of the outer ring surface of the sleeve tube (21) extends outward to form a mounting ring (211), and the sleeve tube (21) is fixed to the flange of the air outlet (12) at the top of the cyclone dust collector (1) through the mounting ring (211) and bolts, and the outer diameter of the sleeve tube (21) matches the inner diameter of the air outlet (12).

7. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 5, characterized in that: A screening net (24) is installed at the bottom end of the sleeve (21) by means of screws. The shaft of the turbine (23) is extended downward to form an extended shaft (26). The outer surface of the extended shaft (26) is provided with a plurality of cleaning scrapers (25) distributed in an annular shape.

8. The air cooling mechanism for low-smoke halogen-free flame retardant material according to claim 7, characterized in that: The bottom surface of the cleaning scraper (25) is provided with a soft rubber brush, and the soft rubber brush is in contact with the upper surface of the screening net (24).

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