An apparatus for producing polypropylene fibers

Abstract

The application discloses a device for producing polypropylene fibers and relates to the technical field of polypropylene processing equipment, and has the technical scheme as follows: the device comprises a screw extruder, a filtering device, a spinner and a container, the top of the screw extruder is provided with a feeding port, the screw extruder is connected with the filtering device through a pipeline, a valve is arranged between the screw extruder and the filtering device, the tail of the filtering device is provided with a flow divider, the bottom of the flow divider is connected with the spinner, a sleeve is welded to the outer wall of the spinner, the container is internally provided with a containing portion, a rotating motor is arranged at the center of the containing portion, the rotating motor is connected with a rotating shaft, the rotating shaft is connected with a roller, blades are arranged on the outer wall of the roller, an oil injection portion is connected to the top edge of the roller, and the roller is located in the sleeve. The device does not need to repeatedly replace filter screens during use, can improve the problem that polypropylene fibers are large in static electricity, and is beneficial to the industrialized production of polypropylene fibers.

Description

Technical Field

[0001] This invention relates to the field of polypropylene processing equipment technology, and more specifically, to an apparatus for producing polypropylene fibers. Background Technology

[0002] Polypropylene fiber, also known as polypropylene fiber, is often used to modify concrete to improve the toughness of building structures and extend their service life due to its high strength, good elasticity, good dispersibility and stable chemical properties.

[0003] The production process of polypropylene fiber generally requires first converting polypropylene masterbatch into a molten state, then pre-filtering the molten polypropylene, and finally spinning the pre-filtered polypropylene into filaments through a spinning assembly, and cooling to form polypropylene fiber.

[0004] Pre-filtration primarily removes impurities present in molten polypropylene through filtration. Therefore, impurities always accumulate on the filter screens of polyfiber production equipment, requiring replacement after a period of use. Frequent filter replacements reduce the efficiency of polypropylene fiber production, hindering industrial production. Furthermore, the common drawbacks of polypropylene fibers, such as easy accumulation and high static electricity, make them prone to adhering to equipment surfaces, negatively impacting processing. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus for producing polypropylene fibers that eliminates the need for repeated filter replacements, improves the problem of high static electricity in polypropylene fibers, and facilitates the industrial production of polypropylene fibers.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an apparatus for producing polypropylene fibers, comprising a screw extruder, a filter device, a spinner, and a container, wherein the screw extruder is provided with a feed inlet at the top, the screw extruder is connected to the filter device through a pipe, a valve is provided between the screw extruder and the filter device, a distributor is provided at the tail of the filter device, the bottom of the distributor is connected to the spinner, a sleeve is welded to the outer wall of the spinner, a container is provided inside the container, a rotating motor is provided at the center of the container, the rotating motor is connected to a rotating shaft, the rotating shaft is connected to a roller, a blade is provided on the outer wall of the roller, an oil spray point is connected to the top edge of the roller, and the roller is located inside the sleeve.

[0007] By adopting the above technical solution, polypropylene blocks enter the screw extruder through the feed inlet, are heated to a molten state in the screw extruder, and then enter the filtration device. After filtration, they reach the distributor, which diverts the filtered, molten polypropylene to the spinneret. The spinneret converts it into filamentous polypropylene. The filamentous polypropylene coils at the oil spraying point and then falls to the roller position, where it is cut into polypropylene fibers by blades on the outer wall of the roller. This device eliminates the need for repeated filter replacements, improves the problem of high static electricity in polypropylene fibers, and is beneficial for the industrial production of polypropylene fibers.

[0008] The present invention is further configured such that: a movable track is provided at the top of the filter device, a stepper motor is movably connected to the movable track, a slag removal pump is connected to the bottom of the stepper motor, a slag discharge pipe is connected to one side of the slag removal pump, the slag discharge pipe leads to the outside of the filter device, a support assembly is provided around the inner side wall of the filter device, a filter screen is connected to the support assembly, and blowers are symmetrically provided on the side wall of the filter device.

[0009] By adopting the above technical solution, the stepper motor can move on the movable track. When the stepper motor moves, it will drive the slag removal pump connected to it. The slag removal pump can suck away the impurities in the polypropylene remaining on the filter screen. The blower nozzle blows air upwards towards the filter screen, which can also blow the impurities upwards, which can assist the slag removal pump in removing the impurities hanging on the filter screen. The slag discharge pipe leads the impurities out to the outside of the device.

[0010] The present invention is further configured such that: the slag removal pump is located above the filter screen, and the blower is located below the filter screen.

[0011] By adopting the above technical solution, the slag removal pump sucks in impurities from above, and the blower blows the impurities upward from below, making it easier to suck away impurities that are located below the filter screen and are not easily sucked up by the slag removal pump, so that the filter screen can be cleaned more thoroughly.

[0012] The present invention is further configured such that: a needle tube is provided at the center of the spinner, the needle tube passes through the distributor and leads to the outside, the needle tube is hollow inside, and a retainer is provided at the connection between the needle tube and the top of the distributor.

[0013] By adopting the above technical solution, the needle tube is connected to the outside and is hollow inside, allowing oil to be sprayed onto the filamentous polypropylene spun by the spinneret. This step is mainly because static electricity is easily generated during the production of polypropylene fibers, causing the polypropylene fibers to adhere to the device, leading to subsequent production difficulties and slowing down the production speed of polypropylene fibers. The retainer is used to fix the position of the needle tube.

[0014] The present invention is further configured such that: the container has a holding area inside, the holding area is circular in shape, the center of the holding area is a rotating shaft, the outer wall of the rotating shaft is symmetrically provided with paddles, and the holding area is symmetrically provided with circular discharge ports that are tangent to the inner surface.

[0015] By adopting the above technical solution, the holding area is used to hold the cut polypropylene fibers. The rotating motor can drive the rotating shaft to rotate, which in turn drives the rotating drum to rotate, thereby driving the oil spraying area connected to the drum. This allows the polypropylene filaments to coil at the oil spraying area and then fall onto the drum, where they are cut into polypropylene fibers by the blades on the outer wall of the drum. The fibers then fall into the holding area where the rotating shaft is located, and are then pushed off the discharge port by the paddle connected to the rotating shaft. During production, workers only need to wait at the discharge port to pack the polypropylene fibers.

[0016] The invention is further configured such that: the oil spraying point is conical, the side wall of the oil spraying point is provided with a ventilation port, the interior of the oil spraying point is hollow, and the top of the roller is provided with a fan.

[0017] By adopting the above technical solution, the oil spraying point is set in a conical shape so that it can better receive the filamentous polypropylene spun by the spinneret. At the same time, the oil sprayed from the needle can also better adhere to the surface of the filamentous polypropylene, reducing the generation of static electricity. The fan set on the top of the roller can blow air to the outside through the ventilation port, so that the oil-adhesive filamentous polypropylene will not adhere to the oil spraying point, and at the same time, it can accelerate its cooling, so that it can be smoothly cut into polypropylene fibers.

[0018] Furthermore, the output end of the rotating motor is connected to the rotating shaft.

[0019] Furthermore, the output end of the stepper motor is connected to the slag removal pump.

[0020] In summary, the present invention has the following beneficial effects:

[0021] The device provided by this invention cleans the filter screen in the filtration device by using a slag pump and a blower, so that the filter screen does not need to be replaced repeatedly during the production of polypropylene fibers, reducing the workload of workers and accelerating the production speed of polypropylene fibers.

[0022] Then, oil is sprayed onto the filamentous polypropylene through a syringe connected to the outside world, which improves the problem of high static electricity in the production process of polypropylene fibers and is conducive to the industrial production of polypropylene fibers.

[0023] In addition, the conical shape of the oil spraying point allows it to better receive the filamentous polypropylene spun by the spinneret. At the same time, the oil sprayed from the needle can also adhere better to the surface of the filamentous polypropylene, reducing the generation of static electricity. The fan on the top of the roller blows air outward through the ventilation port, preventing the oil-stained filamentous polypropylene from adhering to the oil spraying point and accelerating its cooling, so that it can be smoothly cut into polypropylene fibers. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the device structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the spinner and roller of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the filtration device of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the container of the present invention;

[0028] Figure 5 This is a schematic diagram of the activity track of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the present invention when the roller and the oil spraying point are separated.

[0030] In the diagram: 1. Screw extruder; 2. Feed inlet; 3. Valve; 4. Filter device; 401. Moving track; 5. Slag discharge pipe; 6. Blower; 7. Diverter; 8. Needle tube; 9. Fixer; 10. Spinner; 11. Sleeve; 12. Shaft; 13. Container; 14. Discharge port; 15. Supporting component; 16. Filter screen; 17. Slag removal pump; 18. Stepper motor; 19. Oil spraying point; 1901. Ventilation port; 20. Roller; 21. Rotary motor; 22. Paddle; 23. Blade; 24. Fan; 25. Container. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0032] Example: An apparatus for producing polypropylene fibers includes a screw extruder 1, a filter device 4, a spinner 10, and a container 13. The screw extruder 1 is provided with a feed inlet 2 at the top. Polypropylene blocks enter the screw extruder 1 through the feed inlet 2, are heated to a molten state in the screw extruder 1, and then enter the filter device 4 through a pipe. A valve 3 is provided between the screw extruder 1 and the filter device 4. The valve 3 can control the amount of molten polypropylene entering the filter device 4.

[0033] The filter device 4 has a movable track 401 at its top, with a stepper motor 18 movably connected to it. The output of the stepper motor 18 is connected to a slag removal pump 17. A slag discharge pipe 5 is connected to one side of the slag removal pump 17, leading to the outside of the filter device 4. A support assembly is arranged around the inner wall of the filter device 4, and a filter screen 16 is connected to the support assembly. Blowers 6 are symmetrically arranged on the side wall of the filter device 4. The slag removal pump 17 is located above the filter screen 16, and the blowers 6 are located below the filter screen 16. The stepper motor 18 drives the slag removal pump 17, facilitating the pump's suction of impurities located at various positions on the filter screen 16. The blowers 6, in conjunction with the slag removal pump 17, enhance the pump's effectiveness. The slag removal pump 17 operates by driving the slag discharge pipe 5; therefore, after cleaning, the slag discharge pipe 5 needs to be manually pulled back to its original position.

[0034] The filter device 4 is equipped with a distributor 7 at its tail. In the attached diagram of this manual, the distributor 7 distributes the polypropylene to four spinnerets 10. In actual industrial production, the number of these spinnerets 10 can be determined according to requirements. The bottom of the distributor 7 is connected to the spinnerets 10, which spin the molten polypropylene into filaments. A needle tube 8 is located at the center of the spinneret 10. The needle tube 8 passes through the distributor 7 and leads to the outside. The needle tube 8 is hollow inside. A retainer 9 is located at the connection between the needle tube 8 and the top of the distributor 7. A vent 1901 is located on the side wall of the oil spraying area 19. The oil spraying area 19 is hollow inside. A fan 24 is located on the top of the roller 20. The needle tube 8 can spray oil onto the filamentous polypropylene, reducing static electricity in the polypropylene fibers during production. The fan 24 is designed to accelerate the cooling of the filamentous polypropylene and to prevent it from sticking to the oil spraying area 19 after spraying.

[0035] A sleeve 11 is welded to the outer wall of the spinner 10. A roller 20 is located inside the sleeve 11. Blades 23 are provided on the outer wall of the roller 20. An oil spray nozzle 19 is connected to the top edge of the roller 20. The oil spray nozzle 19 is conical. The filamentous polypropylene falls into the conical oil spray nozzle 19. As the rotating shaft 12 rotates, it drives the roller 20 and the oil spray nozzle 19, so the filamentous polypropylene spirals on the conical oil spray nozzle 19. Then it falls into the roller 20 and is cut into polypropylene fibers by the blades 23 on the outer wall of the roller 20. Finally, the fibers fall into the container 13, which has a holding area 25 inside. A rotating motor 21 is located at the center of the holding area 25. The output of the rotating motor 21 is connected to a rotating shaft 12, which is connected to a roller 20. The holding area 25 is circular in shape, with the rotating shaft 12 at its center. Symmetrical paddles 22 are arranged on the outer wall of the rotating shaft 12. Symmetrical circular discharge ports 14, tangent to the paddles, are located in the holding area 25. The paddles 22 actuate the polypropylene fibers, causing them to flow out from the discharge ports 14.

[0036] Working principle: After use, the operator needs to feed the block polypropylene into the screw extruder 1 through the feed port 2. The screw extruder 1 heats it to a molten state and then enters the filter device 4 through the pipeline. The polypropylene filtered by the filter device 4 is spun into filaments by the spinneret 10. After cooling and oiling, it is cut into polypropylene fibers by the blades 23 on the roller 20.

[0037] During filtration, impurities adhere to the filter screen 16. Failure to remove these impurities over time can affect the production of polypropylene fibers. Traditional methods of replacing the filter screen 16 are cumbersome. This device uses a stepper motor 18 to drive a slag removal pump 17, which removes impurities, thus avoiding repeated replacements of the filter screen 16. Furthermore, the blower 6 blows impurities upwards from below, making it easier to remove impurities located below the filter screen 16 that are normally difficult to remove by the slag removal pump 17. This results in a more thorough cleaning of the filter screen 16.

[0038] The static electricity problem of polypropylene fibers during the production process is another key factor affecting polypropylene fiber production. In this device, oil is sprayed onto the filamentous polypropylene spun by the spinneret 10 through a hollow needle tube 8, which can effectively remove static electricity from the polypropylene fibers. The oil spraying point 19 is specially designed in a conical shape, which can better receive the filamentous polypropylene spun by the spinneret 10. At the same time, the oil sprayed by the needle tube 8 can also better adhere to the surface of the filamentous polypropylene, reducing the generation of static electricity. The fan 24 set on the top of the roller 20 blows air to the outside through the ventilation port 1901, so that the oil-adhered filamentous polypropylene will not adhere to the oil spraying point 19, and at the same time, it can accelerate its cooling, so that it can be smoothly cut into polypropylene fibers.

[0039] The holding compartment 25 is used to hold the cut polypropylene fibers. The rotating motor 21 can drive the rotating shaft 12 to rotate, which in turn drives the roller 20 to rotate, thereby driving the oil spraying compartment 19 connected to the roller 20. This allows the polypropylene filaments to coil in the oil spraying compartment 19 and fall onto the roller 20, where they are cut into polypropylene fibers by the blades 23 on the outer wall of the roller 20. The fibers then fall into the holding compartment 25 where the rotating shaft 12 is located, and are then pushed off the discharge port 14 by the paddle 22 connected to the rotating shaft 12. During production, workers only need to wait at the discharge port 14 to pack the polypropylene fibers.

[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An apparatus for producing polypropylene fibers, characterized in that: The device includes a screw extruder (1), a filter (4), a spinner (10), and a container (13). The screw extruder (1) has a feed inlet (2) at its top. The screw extruder (1) is connected to the filter (4) via a pipe. A valve (3) is provided between the screw extruder (1) and the filter (4). The filter (4) has a distributor (7) at its tail end. The bottom of the distributor (7) is connected to the spinner (10). The spinner (10)... A sleeve (11) is welded to the outer wall. The container (13) has a container (25) inside. A rotating motor (21) is located at the center of the container (25). The rotating motor (21) is connected to a rotating shaft (12). The rotating shaft (12) is connected to a roller (20). A blade (23) is provided on the outer wall of the roller (20). An oil spraying port (19) is connected to the top edge of the roller (20). The roller (20) is located inside the sleeve (11).

2. The apparatus for producing polypropylene fibers according to claim 1, characterized in that: The filter device (4) is provided with a movable track (401) at the top, and a stepper motor (18) is movably connected to the movable track (401). A slag removal pump (17) is connected to the bottom of the stepper motor (18). A slag discharge pipe (5) is connected to one side of the slag removal pump (17). The slag discharge pipe (5) leads to the outside of the filter device (4). A support assembly is provided around the inner wall of the filter device (4). A filter screen (16) is connected to the support assembly. Blowers (6) are symmetrically provided on the side wall of the filter device (4).

3. The apparatus for producing polypropylene fibers according to claim 2, characterized in that: The slag removal pump (17) is located above the filter screen (16), and the blower (6) is located below the filter screen (16).

4. The apparatus for producing polypropylene fibers according to claim 1, characterized in that: The spinneret (10) has a needle tube (8) at its center. The needle tube (8) passes through the distributor (7) and leads to the outside. The needle tube (8) is hollow inside. A retainer (9) is provided at the connection between the needle tube (8) and the top of the distributor (7).

5. The apparatus for producing polypropylene fibers according to claim 1, characterized in that: The container (25) is circular in shape, and the center of the container (25) is a rotating shaft (12). The outer wall of the rotating shaft (12) is symmetrically provided with a paddle (22), and the container (25) is symmetrically provided with a circular discharge port (14) that is tangent to the inner wall.

6. The apparatus for producing polypropylene fibers according to claim 1, characterized in that: The oil spraying point (19) is conical, and the side wall of the oil spraying point (19) is provided with a vent (1901). The inside of the oil spraying point (19) is hollow, and the top of the roller (20) is provided with a fan (24).

7. The apparatus for producing polypropylene fibers according to claim 1, characterized in that: The output end of the rotating motor (21) is connected to the rotating shaft (12).

8. The apparatus for producing polypropylene fibers according to claim 2, characterized in that: The output end of the stepper motor (18) is connected to the slag removal pump (17).

Images