A mixing device for polypropylene fiber spinning processing

Abstract

The application discloses a mixing device for polypropylene fiber spinning processing and relates to the technical field of polypropylene fiber spinning processing. The mixing device comprises a mixing tank for uniformly stirring a plurality of granular raw materials. The mixing device for polypropylene fiber spinning processing is provided with coaxially counter-rotating dispersion discs and a feeding cover for uniformly feeding and dispersing and throwing the plurality of granular raw materials. The plurality of dispersed granular raw materials are impacted and oscillated multiple times between the dispersion discs and the feeding cover by a flow resistance mechanism, so that the plurality of granular raw materials are uniformly mixed with each other. Meanwhile, the uniformly mixed granular raw materials are layer by layer discharged by a layered discharging mechanism, so that the uniformly mixed plurality of granular raw materials are layer by layer transported without being stirred. In this way, the mixing device can uniformly mix and discharge the granular raw materials, improve the uniformity of raw material melting in the subsequent melting process, and guarantee the fiber quality of the polypropylene fiber.

Description

Technical Field

[0001] This invention relates to the field of polypropylene spinning processing technology, specifically to a mixing device for polypropylene spinning processing. Background Technology

[0002] Polypropylene is a synthetic fiber made from propylene, a byproduct of petroleum refining. Also known as polypropylene fiber, polypropylene spinning is a continuous process of producing polypropylene fibers by melting, extruding, and stretching polypropylene granules at high temperatures. During this process, the polypropylene raw material needs to be mixed with additives such as smoothing agents, antistatic agents, and emulsifiers to improve the properties of the polypropylene fibers.

[0003] According to a search, Chinese patent CN210477454U discloses a mixing device for polypropylene spinning. This mixing device comprises a mounting plate, a mixing chamber, a motor, a protective shell, a first stirring rod, stirring blades, a second stirring rod, a fixed bearing, a mounting plate, a rack, a connecting bearing, a fixing plate, gears, and a motor. This allows the mixing device to rotate while simultaneously stirring its internal components via the first and second stirring rods, improving the mixing effect. The inclusion of a bearing seat, mounting base, and mixing chamber structure facilitates installation and improves the ease of unloading from the mixing chamber.

[0004] Since the main raw materials for producing polypropylene spinning are polypropylene chips and additives, including color masterbatch, cooling masterbatch, halogen absorber, antioxidant, and light stabilizer, which are all solid particles or powders, making it convenient to mix with polypropylene chips before spinning, the above technical solution uses two stirring rods to mix the raw materials. This mixing method requires the entire inside of the mixing tank to be used as a mixing space, in which various granular raw materials will be continuously dispersed and mixed. However, since the raw materials and additives are all granular in different sizes, when they need to be discharged after continuous mixing in the mixing tank, the raw materials will be concentrated at the discharge chamber for centralized discharge. This makes it easy for the mixed granular raw materials to be dispersed again, and the powdery raw materials will also sink along the gaps between the large particles. When finally introduced into the subsequent melting equipment for polypropylene spinning processing, it is very easy to cause uneven melting. Summary of the Invention

[0005] The purpose of this invention is to provide a mixing device for polypropylene spinning to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mixing device for polypropylene spinning, comprising a mixing tank for mixing various particulate raw materials, wherein a feeding port and a mixing motor are provided on the top wall of the mixing tank, and the mixing motor is installed at the center of the top wall of the mixing tank, and a drive shaft is fixed at the bottom output end of the mixing motor.

[0007] A fixed shell is installed on the inner top wall of the mixing tank. A dispersing disc is provided below the fixed shell and fixed to the bottom end of the drive shaft. The granular raw materials are dispersed and thrown by the rotating dispersing disc. A feeding cover that does not contact the dispersing disc is movably connected to the inner wall of the mixing tank.

[0008] The inner wall of the feeding hood is provided with a flow-blocking mechanism for oscillating and premixing the material thrown from the dispersing disc. The inner side of the lower part of the mixing tank is provided with a layered feeding mechanism for layering and stacking the premixed raw materials. The layered feeding mechanism prevents powdery granular raw materials from passing through the gaps between large granular raw materials and sinking to the bottom.

[0009] Preferably, a gear set is movably arranged inside the fixed housing. The gear set consists of an upper bevel gear disk movably arranged on the top wall of the fixed housing and installed with the drive shaft, a lower bevel gear disk movably arranged on the bottom wall of the fixed housing and penetrating without contacting the drive shaft, and a side bevel gear disk movably arranged on the side wall of the fixed housing and meshing with both the upper and lower bevel gear disks.

[0010] An extension sleeve is fixed to the bottom of the lower bevel gear disc, and the extension sleeve is installed at the top center of the feed hood.

[0011] Preferably, the dispersion disk has a conical structure, and the outer surface of the dispersion disk is integrally formed with a fan-shaped groove;

[0012] The dispersion disc has concave edges on both sides of the groove from the top to the bottom, and a baffle is fixed to the lower edge of one of the concave edges near the groove.

[0013] Preferably, the top of the feeding hood is a conical design, and an opening is formed at an equal angle on the upper side of the conical surface of the feeding hood;

[0014] The lower side of the cone surface of the feeding hood is welded with a spiral ramp that feeds the granular raw material from the top wall of the feeding hood into the inlet, and the edge of the spiral ramp has a flange to prevent the granular raw material from falling off.

[0015] Preferably, the top of the spiral ramp is fixed with an upward-curving support plate, which allows the raw material being lifted along the spiral trajectory to accumulate at the top of the spiral ramp. The outer edge of the feeding hood is fixed with a surrounding plate.

[0016] Preferably, the flow obstruction mechanism includes an isolation ring fixed to the inner wall of the feeding hood and dividing the dispersing disc into inner and outer partition areas, with a rolling gap between the isolation ring and the dispersing disc;

[0017] A notch is provided on the lower side of the isolation ring;

[0018] A feeding paddle is fixed on the inner wall of the notch to impact the granular raw material that is swung by the dispersing disc.

[0019] When the notch on the lower side of the isolation ring rotates to the groove, it achieves localized material accumulation and discharge; when the notch on the lower side of the isolation ring rotates to the outer wall of the dispersing disc, it achieves multi-point material dispersion and discharge.

[0020] Preferably, a telescopic frame is installed on the lower edge of the conical surface of the inner wall of the feeding hood, and the telescopic frame is elastically connected to an inclined rebound plate by a spring.

[0021] An inclined plate corresponding to the position of the rebound plate is fixed on the outer periphery of the dispersion disk.

[0022] Preferably, the lower part of the mixing tank is a conical cylinder structure, and the inner wall of the mixing tank with the conical cylinder structure is fixed with stacking rings in layers;

[0023] A transmission sleeve extends downward from the center inside the dispersion disc. The layered feeding mechanism includes a transmission rod that is inserted into the transmission sleeve, and a tension spring connects the transmission sleeve and the transmission rod.

[0024] The outer side of the transmission rod is fixed with trays whose diameter decreases sequentially from top to bottom, and the upper part of the trays adopts a smooth conical surface design;

[0025] An L-shaped lever is horizontally fixed at the bottom end of the transmission rod, and a guide sleeve is fixed on the bottom surface of the bottom stacking ring. An adjustment groove that connects with the L-shaped lever is opened on the outer side of the guide sleeve. The adjustment groove is composed of an arc-shaped cavity and a concave cavity.

[0026] Preferably, the top of the fixed shell is fitted with a protective cover to prevent particulate raw materials from accumulating on the top wall of the fixed shell, and the top of the feeding hood and the spiral slope are welded with an isolation cover that fits onto the fixed shell, with the lower edge of the protective cover covering the upper edge of the isolation cover.

[0027] Preferably, the bottom of the mixing tank is connected to a discharge valve, and a cylinder for controlling the opening and closing of the discharge valve is hinged to the outer wall of the mixing tank.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The mixing device for polypropylene spinning is equipped with a coaxial reversing dispersion disc and a feeding hood to uniformly feed and disperse various granular raw materials. The flow obstruction mechanism performs multiple impacts and vibrations on the various dispersed granular raw materials between the dispersion disc and the feeding hood, so that the various granular raw materials are mixed evenly. At the same time, the layered feeding mechanism feeds the mixed granular raw materials layer by layer, so that the mixed granular raw materials are transported layer by layer without being dispersed. This prevents the powdery granular raw materials from passing through the gaps between the large granular raw materials and sinking to the bottom. The mixing device can mix and discharge the granular raw materials evenly, which can improve the uniformity of the raw material melting in the subsequent melting process and ensure the fiber quality of polypropylene spinning. Attached Figure Description

[0029] Figure 1 This is a three-dimensional half-sectional structural diagram of the mixing tank of the present invention;

[0030] Figure 2 This is a schematic diagram of the first three-dimensional structure of the linkage between the dispersing disc and the feeding hood of the present invention;

[0031] Figure 3 This is a schematic diagram of the second three-dimensional structure of the linkage between the dispersing disc and the feeding hood of the present invention;

[0032] Figure 4 This is a schematic diagram of the third three-dimensional structure of the present invention, showing the linkage between the dispersing disc and the feeding hood.

[0033] Figure 5 This is a schematic diagram of the first three-dimensional structure of the linkage between the dispersing disc and the layered feeding mechanism of the present invention;

[0034] Figure 6 This is a schematic diagram of the second three-dimensional structure of the linkage between the dispersing disc and the layered feeding mechanism of the present invention;

[0035] Figure 7 This is a schematic diagram of the third three-dimensional structure of the linkage between the dispersing disc and the layered feeding mechanism of the present invention.

[0036] In the diagram: 1. Mixing tank; 101. Feeding port; 102. Mixing motor; 103. Drive shaft; 2. Fixed shell; 201. Gear set; 202. Protective cover; 203. Isolation cover; 3. Dispersing disc; 301. Groove; 301a. Concave edge; 302. Baffle; 303. Inclined plate; 4. Feeding cover; 401. Through port; 402. Spiral ramp; 403. Pallet; 404. Enclosure; 5. Flow control mechanism; 501. Isolation ring; 502. Feeding paddle; 503. Notch; 504. Telescopic frame; 505. Rebound plate; 6. Layered feeding mechanism; 601. Transmission rod; 602. Tension spring; 603. Tray; 604. L-shaped lever; 605. Guide sleeve; 606. Adjusting groove; 7. Stacking ring; 8. Discharge valve; 9. Cylinder. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1 and Figure 2The present invention provides a technical solution: a mixing device for polypropylene spinning processing, comprising a mixing tank 1 for mixing various particulate raw materials, wherein the top wall of the mixing tank 1 is provided with a feeding port 101 and a mixing motor 102, and the mixing motor 102 is installed at the center of the top wall of the mixing tank 1, and a drive shaft 103 is fixed at the bottom output end of the mixing motor 102. The feeding port 101 is arranged at equal angles on the top wall of the mixing tank 1. When various raw materials for processing polypropylene spinning are poured into the mixing tank 1 along the feeding port 101, the different raw materials can be dispersed and added through the feeding port 101 distributed at equal angles.

[0039] Please see Figures 1-5 A fixed shell 2 is installed on the inner top wall of the mixing tank 1, and a gear set 201 is movably arranged inside the fixed shell 2. A dispersing disc 3 is arranged below the fixed shell 2 and fixed to the bottom end of the drive shaft 103. The granular raw materials are dispersed and thrown by the rotating dispersing disc 3. A feeding cover 4 that does not contact the dispersing disc 3 is movably connected to the inner wall of the mixing tank 1.

[0040] The gear set 201 consists of an upper bevel gear disk movably mounted on the top wall of the fixed housing 2 and installed with the drive shaft 103, a lower bevel gear disk movably mounted on the bottom wall of the fixed housing 2 and passing through the drive shaft 103 without contacting it, and a side bevel gear disk movably mounted on the side wall of the fixed housing 2 and meshing with both the upper and lower bevel gear disks. An extension sleeve is fixed to the bottom of the lower bevel gear disk, and the extension sleeve is installed at the top center of the feed cover 4.

[0041] In this embodiment, different raw materials added from the feed ports 101, which are distributed at equal angles, will gather above the feed hood 4. Then, the mixing motor 102 and the drive shaft 103 drive the upper bevel gear disk and the dispersing disk 3 inside the fixed shell 2 to rotate synchronously in the forward direction. By using the meshing of the side bevel gear disk with the upper bevel gear disk and the lower bevel gear disk, the dispersing disk 3 and the feed hood 4 can achieve coaxial reverse rotation.

[0042] Please see Figure 4 and Figure 7 The dispersion disk 3 has a conical structure, and the outer side of the dispersion disk 3 is integrally formed with a fan-shaped groove 301. Concave edges 301a are provided on both sides of the groove 301 from the top to the bottom of the dispersion disk 3. A baffle 302 is fixed to the lower edge of one of the concave edges 301a near the groove 301 of the dispersion disk 3.

[0043] In this embodiment, when the mixing motor 102 drives the dispersing disk 3 to rotate forward, the forward-rotating dispersing disk 3 will disperse and fling the granular raw materials through the grooves 301 on its surface. As the granular raw materials move down along the conical dispersing disk 3, they can be continuously impacted and flung by the fan-shaped grooves 301 and concave edges 301a. At this time, the various granular raw materials that have entered between the dispersing disk 3 and the feeding hood 4 can be dispersed and mixed during the flinging.

[0044] Please see Figures 1-5 The top of the feeding hood 4 is a conical design. The upper side of the conical surface of the feeding hood 4 has an opening 401 at an equal angle. The lower side of the conical surface of the feeding hood 4 is welded with a spiral ramp 402 that feeds the granular raw material from the top wall of the feeding hood 4 into the opening 401. The edge of the spiral ramp 402 has a flange to prevent the granular raw material from falling off.

[0045] The top of the spiral ramp 402 is fixed with an upward-curving support plate 403. The upward-curving support plate 403 allows the raw material lifted along the spiral trajectory to accumulate at the top of the spiral ramp 402. The outer edge of the feeding hood 4 is fixed with a surrounding plate 404.

[0046] In this embodiment, when multiple granular materials fall onto the top of the feeding hood 4, the surrounding plate 404 is used to prevent the materials from falling off and gather them. At this time, the feeding hood 4, which is coaxially reversed with the dispersing disc 3, will drive the spiral slope 402 to evenly deliver the multiple granular materials along the opening 401 into the interior of the feeding hood 4. When the granular materials accumulate along the spiral slope 402 onto the upward-curving pallet 403, the pallet 403 will gather the granular materials at the openings 401 that are evenly distributed, so that the openings 401 that are evenly distributed can evenly sprinkle the granular materials into the interior of the feeding hood 4.

[0047] Please see Figure 1 , Figure 2 and Figure 5 The top of the fixed shell 2 is connected to a protective cover 202 to prevent the granular raw materials from accumulating on the top wall of the fixed shell 2. The top of the feeding cover 4 and the spiral slope 402 are welded with an isolation cover 203 that fits onto the fixed shell 2. The lower edge of the protective cover 202 covers the upper edge of the isolation cover 203.

[0048] In this embodiment, the protective cover 202 is used to shield the top of the fixed shell 2, and the lower edge of the protective cover 202 is used to shield the upper edge of the isolation cover 203, preventing the granular raw materials falling from the feed port 101 from directly entering the inlet 401 and the gap between the fixed shell 2 and the isolation cover 203. This allows the raw materials falling from the feed port 101 to the top of the feeding cover 4 to be concentrated and accumulated on the spiral slope 402 of the cone surface of the top wall of the feeding cover 4, which facilitates the quantitative feeding of various granular raw materials.

[0049] Please see Figure 1 and Figure 4The inner wall of the feeding hood 4 is provided with a flow-blocking mechanism 5 for premixing the material thrown from the dispersing disc 3 by vibration. The flow-blocking mechanism 5 includes an isolation ring 501 fixed on the inner wall of the feeding hood 4 and dividing the dispersing disc 3 into inner and outer partition areas. A rolling gap is left between the isolation ring 501 and the dispersing disc 3. A notch 503 is opened on the lower side of the isolation ring 501. A feeding paddle 502 is fixed on the inner wall of the notch 503 to impact the granular raw material thrown by the dispersing disc 3. When the notch 503 on the lower side of the isolation ring 501 rotates to the groove 301, it achieves local accumulation and discharge. When the notch 503 on the lower side of the isolation ring 501 rotates to the outer wall of the dispersing disc 3, it achieves multiple dispersion and discharge.

[0050] In this embodiment, when multiple granular raw materials fall onto the outer conical surface of the dispersing disk 3 along the opening 401, the raw materials are first dispersed and thrown through the groove 301 on the outer wall of the dispersing disk 3. Then, the feeding cover 4, which is in the opposite direction to the dispersing disk 3, drives the feeding paddle 502 on the inner wall of the isolation ring 501 to rotate and beat the centrifugally thrown raw materials. At this time, multiple granular raw materials can be pre-mixed in a reciprocating manner. When the granular raw materials are reciprocated and pre-mixed, a small portion of the granular raw materials will overflow along the rolling gap between the isolation ring 501 and the dispersing disk 3, the groove 301, and the notch 503 on the lower side of the isolation ring 501. This prevents the raw materials in the inner area of ​​the isolation ring 501 from accumulating too much and causing insufficient impact strength of the granular raw materials, which in turn leads to uneven premixing of the raw materials.

[0051] As the isolation ring 501, which rotates with the feeding hood 4, drives the notch 503 to reciprocate close to the outer wall of the dispersing disk 3 and the groove 301, when the notch 503 is close to the outer wall of the dispersing disk 3, the raw material overflowing downward from the notch 503 and the raw material overflowing downward from the groove 301 are dispersed from each other. When the notch 503 is close to the groove 301, the positions of the notch 503 and the groove 301 are corresponding. At this time, the raw material overflowing downward from the notch 503 and the groove 301 is gathered in one place, ensuring that the raw material overflowing from the inner area of ​​the isolation ring 501 to the outer area of ​​the isolation ring 501 can achieve the alternating switching of the two modes of overflow, so that the various particulate raw materials that have been initially dispersed and mixed can achieve multi-directional mixing and distribution during overflow.

[0052] It should be noted that when the notch 503 is close to the outer wall of the dispersing disk 3, the raw material overflowing from the notch 503 will be blocked by the rotating baffle 302. At this time, the baffle 302 will drive the raw material to generate centrifugal throwing, so that the centrifugally thrown granular raw material is spread along the conical surface of the dispersing disk 3 to the inner wall of the feeding hood 4.

[0053] When the notch 503 corresponds to the groove 301, the material overflowing downward from the notch 503 and the groove 301 will be rotated and impacted by the concave edge 301a away from the baffle 302, so that the material being rotated and impacted can be reciprocated and dispersed with the inner wall of the feeding hood 4, ensuring that large and small particles of material can be mixed again during overflow.

[0054] Please see Figure 3 , Figure 4 , Figure 6 and Figure 7 A telescopic frame 504 is installed on the lower edge of the cone surface of the inner wall of the feeding hood 4, and the telescopic frame 504 is elastically connected to an inclined rebound plate 505 by a spring. An inclined plate 303 corresponding to the position of the rebound plate 505 is fixed on the outer periphery of the dispersing disc 3.

[0055] In this embodiment, when multiple granular raw materials flow to the outer periphery of the dispersing disk 3, the rotating dispersing disk 3 will impact the raw materials through the inclined plate 303 on the outer periphery, causing the raw materials to impact back and forth between the rebound plates 505. Since the rebound plates 505 are inclined, when the inclined plate 303 impacts the raw materials and moves towards the rebound plates 505, the raw materials are compressed and gathered between the inclined plate 303 and the rebound plates 505 with gradually decreasing spacing. As a result, the multiple raw materials that are gradually gathered will fall down through the adjacent inclined plates 303 due to the gradually decreasing impact intensity. Furthermore, since the rebound plates 505 and the telescopic frame 504 are elastically connected by springs, when the impact force is too large or when they are squeezed by too many gathered raw materials, the rebound plates 505 will move upward to buffer. Finally, the multiple granular raw materials will rotate and pat at the lower edge of the cone surface of the inner wall of the feeding hood 4, thereby allowing the large granular raw materials and the small granular raw materials to be dispersed and mixed in a secondary small range.

[0056] Please see Figure 1 , Figure 3 , Figures 5-7 The mixing tank 1 is provided with a layered feeding mechanism 6 for layering and stacking premixed raw materials on the inner side of the lower part. The lower part of the mixing tank 1 is a conical structure, and the inner wall of the mixing tank 1 with the conical structure is fixed with layered stacking rings 7. The center of the dispersing disc 3 extends downward with a transmission sleeve. The layered feeding mechanism 6 includes a transmission rod 601 that is inserted into the transmission sleeve, and a tension spring 602 is connected between the transmission sleeve and the transmission rod 601.

[0057] The outer side of the transmission rod 601 is fixed with trays 603 whose diameter decreases from top to bottom. The upper part of the tray 603 adopts a smooth conical surface design. The bottom end of the transmission rod 601 is horizontally fixed with an L-shaped lever 604. The bottom surface of the stacking ring 7 at the bottom end is fixed with a guide sleeve 605. The outer side of the guide sleeve 605 is provided with an adjustment groove 606 that mates with the L-shaped lever 604. The adjustment groove 606 is composed of an arc-shaped cavity and a concave cavity connected together.

[0058] In this embodiment, when the mixed granular raw materials fall onto the uppermost tray 603 and the stacking ring 7, the rotating dispersing disc 3 and the transmission sleeve drive the transmission rod 601 to rotate at the bottom of the mixing tank 1. At this time, the rotating transmission rod 601 will drive the horizontally placed L-shaped lever 604 at the bottom to move along the adjustment groove 606 on the outer side of the guide sleeve 605. When the L-shaped lever 604 moves along the arc-shaped cavity of the adjustment groove 606, the transmission rod 601 will drive the tray 603 with a smooth conical surface at the top to rotate, contact and rub against the mixed granular raw materials stacked in layers on the stacking ring 7.

[0059] Since the raw material particles of polypropylene chips, color masterbatch, cooling masterbatch and other powder additives have different sizes and the particle shape is not spherical, when the raw materials piled at the bottom are rubbed and shaken, it can prevent the local accumulation of multiple granular raw materials in the layered stack, and avoid the large-scale dispersion of multiple large and small granular raw materials after being mixed.

[0060] When the L-shaped lever 604 moves along the arc-shaped cavity of the adjusting groove 606 to the recessed cavity, the L-shaped lever 604 will drive the transmission rod 601 to pull the tray 603 and the stacking ring 7 downwards, so that the top of the transmission rod 601 will move down from the transmission sleeve and stretch the tension spring 602. At this time, the granular raw material piled up in the upper layer will flow downwards from the gap between the tray 603 and the stacking ring 7. While the tray 603 moves downwards, it will also squeeze and discharge the raw material piled up in the lower layer, preventing the raw material flowing downwards from accumulating locally in the central position. It can also be pressurized and squeezed out when the raw material flows downwards, so that each layer of the stacking space can be evenly stacked, and the raw material flowing downwards can be discharged without obstruction.

[0061] When the L-shaped lever 604 moves from the recessed cavity of the adjusting groove 606 to the arc-shaped cavity, the transmission rod 601 will drive the tray 603 to move upward again and connect with the stacking ring 7 to close. At this time, it can prevent the raw material from being discharged downward again.

[0062] In summary, when the pallet 603 and the stacking ring 7 are in a closed docking position, the layered pallet 603 and the stacking ring 7 can be used to stack the various granular raw materials mixed in the mixing tank 1 in layers. Therefore, the layered feeding mechanism 6 can prevent powdery granular raw materials from passing through the gaps between large granular raw materials and sinking to the bottom.

[0063] When the tray 603 and the stacking ring 7 are separated, the downward movement of the tray 603 and the stacking ring 7 allows the bottom layer of the layered raw materials to be introduced into the top layer of the next stacking space. By discharging the bottom layer of raw materials layer by layer, the mixed granular raw materials can be conveyed layer by layer without being dispersed, ensuring that the mixed granular raw materials can be discharged in a mixed state. In subsequent processing, the mixed raw materials can be uniformly melted, thereby improving the performance of polypropylene spinning.

[0064] Please see Figure 1 The bottom of the mixing tank 1 is connected to a discharge valve 8, and a cylinder 9 for controlling the opening and closing of the discharge valve 8 is hinged to the outer wall of the mixing tank 1. By starting the cylinder 9, the discharge valve 8 is driven to open and close. When the discharge valve 8 is closed, the mixing tank 1 can mix and layer materials when there is no material discharge. When the discharge valve 8 is open, it is convenient to discharge the mixed raw materials inside the mixing tank 1.

Claims

1. A mixing device for polypropylene spinning, comprising a mixing tank (1) for mixing various particulate raw materials, wherein the top wall of the mixing tank (1) is provided with a feeding port (101) and a mixing motor (102), and the mixing motor (102) is installed at the center of the top wall of the mixing tank (1), and a drive shaft (103) is fixed at the bottom output end of the mixing motor (102); characterized in that: A fixed shell (2) is installed on the inner top wall of the mixing tank (1). A dispersing disc (3) fixed to the bottom end of the drive shaft (103) is provided below the fixed shell (2). The granular raw materials are dispersed and thrown by the rotating dispersing disc (3). A feeding cover (4) that does not contact the dispersing disc (3) is movably connected to the inner wall of the mixing tank (1). The inner wall of the feeding hood (4) is provided with a flow-blocking mechanism (5) for premixing the material thrown by the dispersing disc (3) by vibration. The inner side of the lower part of the mixing tank (1) is provided with a layered feeding mechanism (6) for layering and stacking the premixed raw materials. The layered feeding mechanism (6) prevents the powdery granular raw materials from passing through the gaps between the large granular raw materials and sinking to the bottom.

2. The mixing device for polypropylene spinning according to claim 1, characterized in that: The fixed housing (2) is equipped with a gear set (201). The gear set (201) consists of an upper bevel gear disk that is movably mounted on the top wall of the fixed housing (2) and installed with the drive shaft (103), a lower bevel gear disk that is movably mounted on the bottom wall of the fixed housing (2) and penetrates the drive shaft (103) without contacting it, and a side bevel gear disk that is movably mounted on the side wall of the fixed housing (2) and meshes with both the upper and lower bevel gear disks. An extension sleeve is fixed to the bottom of the lower bevel gear plate, and the extension sleeve is installed at the top center of the feed hood (4).

3. The mixing device for polypropylene spinning according to claim 1, characterized in that: The dispersion disk (3) has a conical structure, and the outer side of the dispersion disk (3) is integrally formed with a fan-shaped groove (301). A concave edge (301a) is provided on both sides of the groove (301) from the top to the bottom of the dispersion disk (3), and a baffle (302) is fixed on the lower edge of one of the concave edges (301a) near the groove (301) of the dispersion disk (3).

4. The mixing device for polypropylene spinning according to claim 1, characterized in that: The top of the feeding hood (4) is a conical design, and an opening (401) is provided at an equal angle on the upper side of the conical surface of the feeding hood (4). The lower side of the cone surface of the feed hood (4) is welded with a spiral ramp (402) that delivers the granular raw material from the top wall of the feed hood (4) into the inlet (401), and the edge of the spiral ramp (402) has a flange to prevent the granular raw material from falling off.

5. A mixing device for polypropylene spinning according to claim 4, characterized in that: The top of the spiral ramp (402) is fixed with an upward-curving support plate (403). The upward-curving support plate (403) allows the raw material lifted along the spiral trajectory to accumulate at the top of the spiral ramp (402). The outer edge of the feeding hood (4) is fixed with a surrounding plate (404).

6. The mixing device for polypropylene spinning according to claim 1, characterized in that: The flow obstruction mechanism (5) includes an isolation ring (501) fixed on the inner wall of the feeding hood (4) and dividing the dispersing disc (3) into inner and outer partition areas. A rolling gap is left between the isolation ring (501) and the dispersing disc (3). A notch (503) is provided on the lower side of the isolation ring (501); A feeding paddle (502) is fixed on the inner wall of the notch (503) to impact the granular raw material that is swung by the dispersing disc (3). When the notch (503) on the lower side of the isolation ring (501) rotates to the groove (301), local accumulation and discharge of material is achieved. When the notch (503) on the lower side of the isolation ring (501) rotates to the outer wall of the dispersion disc (3), multiple dispersion and discharge of material are achieved.

7. A mixing device for polypropylene spinning according to claim 4, characterized in that: The lower edge of the cone surface of the inner wall of the feeding hood (4) is equipped with a telescopic frame (504), and the telescopic frame (504) is elastically connected to an inclined rebound plate (505) by a spring. The outer periphery of the dispersion disk (3) is fixed with an inclined plate (303) corresponding to the position of the rebound plate (505).

8. The mixing device for polypropylene spinning according to claim 1, characterized in that: The lower part of the mixing tank (1) is a conical cylinder structure, and the inner wall of the mixing tank (1) with the conical cylinder structure is fixed with stacking rings (7) in layers. The center of the dispersing disc (3) extends downwards with a transmission sleeve. The layered feeding mechanism (6) includes a transmission rod (601) that is inserted into the transmission sleeve, and a tension spring (602) is connected between the transmission sleeve and the transmission rod (601). The outer side of the transmission rod (601) is fixed with trays (603) whose diameter decreases from top to bottom, and the upper part of the trays (603) adopts a smooth conical surface design. The bottom end of the transmission rod (601) is horizontally fixed with an L-shaped lever (604), and the bottom surface of the bottom stacking ring (7) is fixed with a guide sleeve (605). The outer side of the guide sleeve (605) is provided with an adjustment groove (606) that connects with the L-shaped lever (604). The adjustment groove (606) is composed of an arc-shaped cavity and a concave cavity.

9. A mixing device for polypropylene spinning according to claim 2, characterized in that: The top of the fixed shell (2) is connected to a protective cover (202) to prevent the granular raw materials from accumulating on the top wall of the fixed shell (2). The top of the feeding cover (4) and the spiral slope (402) are welded with an isolation cover (203) that fits onto the fixed shell (2). The lower edge of the protective cover (202) covers the upper edge of the isolation cover (203).

10. A mixing device for polypropylene spinning according to claim 1, characterized in that: The bottom of the mixing tank (1) is connected to a discharge valve (8), and a cylinder (9) for controlling the opening and closing of the discharge valve (8) is hinged to the outer wall of the mixing tank (1).

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