A mixing device for preparing cable materials using PP filler

Abstract

The invention discloses a mixing device for preparing cable materials with PP filler, relates to the field of mixing devices, and solves the problem that powder raw materials are difficult to fully and evenly mix with molten liquid when using the existing mixing device for preparing cable materials with PP filler. The mixing device comprises a base, a stirring barrel, a rotating cylinder, a feeding hopper, a mixing mechanism, a conveying mechanism and an opening and closing mechanism. The mixing mechanism comprises a stirring shaft, the conveying mechanism comprises a screen and a shaking piece, and the opening and closing mechanism comprises a lifting plate and a plurality of baffles. The mixing device for preparing cable materials with PP filler is convenient for driving a stirring rod to rotate and stir through the stirring shaft, driving the baffle to open when the stirring shaft rotates in the forward direction, and making the shaking piece run, so as to mix the powder raw materials with the molten liquid, and when the stirring shaft rotates in the reverse direction, controlling the baffle to close, blocking the bottom of the screen and driving the lifting plate to move downward, squeezing and pushing the powder floating above the molten liquid downward into the liquid for mixing, thereby improving the raw material mixing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of mixing devices, in particular to a mixing device for preparing cable materials using PP fillers. Background Art

[0002] Among the polymer materials used in cables, besides polyvinyl chloride, polyolefins are used in the largest amount, among which polyethylene and polypropylene are the most commonly used. Polypropylene (PP) is a thermoplastic resin obtained by polymerization of propylene as a monomer. Due to its regular structure and high crystallinity, the melting point of polypropylene can be as high as 167°C. It is heat-resistant and corrosion-resistant, and has a higher heat deformation temperature and greater hardness than polyethylene. Therefore, polypropylene can be used as a cable with a higher heat-resistant grade. PP filler masterbatch is a masterbatch made by modifying ultrafine calcium carbonate powder and compounding it with resin. It has good compatibility with polypropylene and can be filled into it to enhance, increase volume, and reduce costs. A mixing device is required during the processing of finished PP filler.

[0003] When mixing ultrafine calcium carbonate powder with molten resin, the existing mixing device generally directly pours the powder into the molten resin for mixing. During the mixing process, the upper layer of powder that is not in contact with the liquid will be blown, generating a large amount of dust, and the powder will float in the air and inside the equipment. Due to the continuous stirring, the powder floating inside the equipment is difficult to settle into the molten liquid for full mixing, which will lead to errors in the composition ratio of the final liquid raw material. Secondly, when the equipment is turned on, the internal powder will float outward, affecting the air quality and causing harm to the workers. To this end, we propose a mixing device for preparing cable materials with PP fillers. Summary of the invention

[0004] The object of the present invention is to provide a mixing device for preparing cable materials with PP filler, which is convenient for improving the uniformity of mixing and stirring between powder raw materials and liquid raw materials and preventing a large amount of powder from scattering and affecting the raw material ratio, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mixing device for preparing cable materials with PP filler, comprising a base, a mixing mechanism, a conveying mechanism and an opening and closing mechanism, wherein a mixing barrel is fixedly connected to the base, a rotating drum is rotatably connected to the upper end of the mixing barrel, a feeding hopper is rotatably connected to the top end of the rotating drum, a connecting frame fixedly connected to the mixing barrel is fixedly connected to the bottom of the feeding hopper, the mixing mechanism comprises a mixing shaft rotatably connected to the mixing barrel, a plurality of groups of mixing rods are evenly and fixedly connected to the outer wall of the mixing shaft, which are used to drive the mixing rods to rotate through the mixing shaft to achieve a mixing function for the internal raw materials, the conveying mechanism comprises a screen installed in the rotating drum, and a device is provided on the mixing shaft for driving the screen to shake, so as to evenly convey the powder raw materials to the mixing barrel. The internal shaking part is used to transport the raw materials and improve the mixing efficiency between the powder raw materials and the molten liquid. The opening and closing mechanism includes a lifting plate that is slidably connected to the inner wall of the stirring barrel in the vertical direction. The lifting plate is evenly slidably connected with multiple groups of baffles, which are used to drive the baffles to open when the stirring shaft rotates in the forward direction, and make the shaking part operate to mix the powder raw materials with the molten liquid. When the stirring shaft rotates in the reverse direction, the baffles are controlled to close to block the bottom of the screen and drive the lifting plate to move downward, and at the same time, the operating state of the shaking part is released, and the powder floating above the molten liquid is squeezed downward and pushed into the liquid through the lifting plate and the baffle for mixing, so as to improve the uniformity of mixing and stirring between the powder raw materials and the liquid raw materials and prevent a large amount of powder from floating and affecting the raw material ratio.

[0006] Preferably, the opening and closing mechanism also includes a first tension spring fixedly mounted on one side of the baffle, one end of the first tension spring is fixedly connected to the lifting plate, a driving ring is rotatably connected to the lifting plate, a plurality of groups of arc grooves are evenly arranged on the driving ring, a driving rod is fixedly connected to the baffle, the driving rod passes through the arc groove and is slidably connected to the inner wall of the arc groove, the outer wall of the driving ring slides in contact with the inner wall of the rotating cylinder, and a lifting member is provided in the rotating cylinder for driving the lifting plate to rise and fall, thereby facilitating the control of the lifting state and opening and closing state of the baffle.

[0007] Preferably, the lifting member includes a driving plate installed in the rotating cylinder, the top end of the driving rod is fixedly connected to a limit block which is slidably connected to the driving plate in a horizontal direction, the driving plate is provided with a control member for controlling the operating state of the shaking member, the base is provided with a rotating member for driving the rotating cylinder to rotate when the stirring shaft rotates, and the rotating cylinder is provided with a driving member for driving the driving plate to lift and lower, so as to facilitate driving the lifting plate to lift and lower.

[0008] Preferably, the driving member includes a driving block fixedly mounted on the side of the driving plate, the inner wall of the rotating cylinder is provided with a first annular groove and a second annular groove, the inner wall of the rotating cylinder is provided with a threaded groove, the upper and lower ends of the threaded groove are respectively connected with the first annular groove and the second annular groove, the first annular groove, the threaded groove and the second annular groove can be slidably connected with the driving block, and the top end of the driving plate is fixedly connected to a reset spring fixedly connected to the bottom of the hopper, so as to drive the driving plate to rise and fall.

[0009] Preferably, the shaking member includes a feed cylinder fixedly mounted on the bottom of the feed hopper, the outer wall of the feed cylinder is slidably connected with a lifting cylinder in a vertical direction, the screen is fixedly mounted on the bottom of the lifting cylinder, the stirring shaft passes through the screen and is movably connected to the inner wall of the screen, and the top of the stirring shaft is provided with a conveying member for driving the screen to lift and shake, so as to drive the screen to shake and evenly convey the powder raw material to the inside of the stirring barrel.

[0010] Preferably, the conveying member includes a rotating shaft fixedly mounted on the top end of the stirring shaft, a corrugated ring is fixedly connected to the outer wall of the top end of the rotating shaft, the bottom surface of the corrugated ring is wavy, a mounting tube is fixedly connected to the screen, a mounting ring is fixedly connected to the inner wall of the mounting tube, the inner wall of the mounting ring is movably connected to the outer wall of the rotating shaft, and a plurality of groups of top blocks are evenly and fixedly connected to the mounting ring to facilitate the lifting and shaking of the screen.

[0011] Preferably, the control member includes a second tension spring fixedly mounted on the upper end of the lifting cylinder, the top end of the second tension spring is fixedly connected with a push ring, and the push ring is slidably connected to the outer wall of the feeding cylinder along the vertical direction, so as to facilitate the control of the interference state between the top block and the bottom surface of the corrugated ring.

[0012] Preferably, the rotating member includes a driving motor fixedly mounted on the base, the output end of the driving motor is coaxially fixedly connected to the bottom end of the stirring shaft, a connecting shaft is rotatably connected to the base, the stirring shaft is connected to a transmission belt connected to the pulley on the connecting shaft via a pulley, the top of the connecting shaft is coaxially fixedly connected to a driving gear, and the outer wall of the rotating cylinder is fixedly connected to an external gear ring meshing with the driving gear, so as to drive the rotating cylinder to rotate when the stirring shaft rotates.

[0013] Preferably, the conveying mechanism further comprises a feed pipe connected to the side of the mixing barrel, and the side of the mixing barrel is connected to a discharge trough, so as to facilitate the control of the in-and-out conveyance of the raw materials inside the mixing barrel.

[0014] Preferably, a conical block is fixedly connected to the top end of the rotating shaft to prevent the powder falling from the hopper from accumulating on the top of the conical block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a mixing device for preparing cable materials with PP fillers, which solves the problem that the powder raw materials are difficult to be fully and evenly mixed with the molten liquid when the existing mixing device for preparing cable materials with PP fillers is used, resulting in a large amount of powder floating in the air, affecting the raw material ratio and causing environmental pollution. The mixing device is convenient for driving the stirring rod to rotate through the stirring shaft to realize the stirring function of the internal raw materials, and the raw materials are conveyed through the conveying mechanism to improve the mixing efficiency between the powder raw materials and the molten liquid. The opening and closing mechanism controls the baffle to open when the stirring shaft rotates forward, and the shaking part is operated to mix the powder raw materials with the molten liquid. The liquid is mixed, and when the stirring shaft rotates in the opposite direction, the baffle is controlled to close, blocking the bottom of the screen and driving the lifting plate to move downward, and at the same time the operating state of the shaking part is released, and the powder floating above the molten liquid is squeezed downward into the liquid through the lifting plate and the baffle for mixing. The device has a high degree of automation and is convenient and efficient to operate. It can effectively improve the mixing uniformity between the powder raw materials and the liquid raw materials and reduce the possibility of powder agglomeration in the liquid. At the same time, the scattered powder raw materials can be fully input into the liquid for mixing, so as to keep the final raw material ratio of the product the same as the input raw material ratio, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the rotating part of the present invention;

[0019] Figure 3 for Figure 2 A magnified image of the middle A area;

[0020] Figure 4 This is a schematic diagram of the structure of the baffle in the open state of the present invention;

[0021] Figure 5 This is a schematic diagram of the control structure of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of area B;

[0023] Figure 7 It is a partial structural schematic diagram of the opening and closing mechanism of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view of area C in the middle;

[0025] Fig. 9 It is a schematic diagram of the local structure of the shaking member of the present invention;

[0026] Fig.10 It is a schematic diagram of the structure of the baffle in the closed state of the present invention.

[0027] In the figure: 1-base; 2-mixing barrel; 3-rotating cylinder; 4-feeding hopper; 5-connecting frame; 6-mixing mechanism; 7-mixing shaft; 8-mixing rod; 9-conveying mechanism; 10-screen; 11-shaking member; 12-opening and closing mechanism; 13-lifting plate; 14-baffle; 15-first tension spring; 16-driving ring; 17-arc groove; 18-driving rod; 19-lifting member; 20-driving plate; 21-limiting block; 22-control member; 23-rotating member; 24-driving member; 25 -driving block; 26-first annular groove; 27-second annular groove; 28-threaded groove; 29-reset spring; 30-feeding barrel; 31-lifting barrel; 32-conveying member; 33-rotating shaft; 34-corrugated ring; 35-mounting tube; 36-mounting ring; 37-top block; 38-second tension spring; 39-pushing ring; 40-driving motor; 41-connecting shaft; 42-transmission belt; 43-driving gear; 44-external gear ring; 45-feeding barrel; 46-discharging trough; 47-conical block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figure 1-Figure 10, a mixing device for preparing cable materials with PP filler shown in the figure, includes a base 1, a mixing mechanism 6, a conveying mechanism 9 and an opening and closing mechanism 12, a mixing barrel 2 is fixedly connected to the base 1, a rotating drum 3 is rotatably connected to the upper end of the mixing barrel 2, a feeding hopper 4 is rotatably connected to the top of the rotating drum 3, a connecting frame 5 fixedly connected to the mixing barrel 2 is fixedly connected to the bottom of the feeding hopper 4, the mixing mechanism 6 includes a stirring shaft 7 rotatably connected to the mixing barrel 2, a plurality of stirring rods 8 are evenly and fixedly connected to the outer wall of the stirring shaft 7, which are used to drive the stirring rods 8 to rotate through the stirring shaft 7 to achieve the stirring function of the internal raw materials, the conveying mechanism 9 includes a screen 10 installed in the rotating drum 3, the conveying mechanism 9 also includes a feeding pipe 45 connected to the side of the mixing barrel 2, a discharge trough 46 is connected to the side of the mixing barrel 2, and a shaking member 11 is provided on the stirring shaft 7 for driving the screen 10 to shake and evenly convey the powder raw material to the inside of the mixing barrel 2, which is used to convey the raw materials and improve the mixing efficiency between the powder raw material and the molten liquid.

[0031] The opening and closing mechanism 12 includes a lifting plate 13 which is slidably connected to the inner wall of the stirring barrel 2 in the vertical direction. A plurality of baffles 14 are evenly and slidably connected to the lifting plate 13, which is used to drive the baffles 14 to open when the stirring shaft 7 rotates in the forward direction, and to enable the shaking member 11 to operate to mix the powder raw material with the molten liquid. When the stirring shaft 7 rotates in the reverse direction, the baffles 14 are controlled to close, blocking the bottom of the screen 10 and driving the lifting plate 13 to move downward, while releasing the operating state of the shaking member 11, and squeezing the powder floating above the molten liquid downward into the liquid through the lifting plate 13 and the baffles 14 for mixing.

[0032] The opening and closing mechanism 12 also includes a first tension spring 15 fixedly installed on one side of the baffle 14, one end of the first tension spring 15 is fixedly connected to the lifting plate 13, a driving ring 16 is rotatably connected to the lifting plate 13, and a plurality of groups of arc grooves 17 are evenly arranged on the driving ring 16, a driving rod 18 is fixedly connected to the baffle 14, the driving rod 18 passes through the arc groove 17, and is slidably connected to the inner wall of the arc groove 17, the outer wall of the driving ring 16 slides in contact with the inner wall of the rotating cylinder 3, and a lifting member 19 is provided in the rotating cylinder 3 to drive the lifting plate 13 to rise and fall.

[0033] The lifting member 19 includes a driving plate 20 installed in the rotating drum 3, the top end of the driving rod 18 is fixedly connected to a limit block 21 which is slidably connected to the driving plate 20 in a horizontal direction, the driving plate 20 is provided with a control member 22 for controlling the operating state of the shaking member 11, the base 1 is provided with a rotating member 23 for driving the rotating drum 3 to rotate when the stirring shaft 7 rotates, and the rotating drum 3 is provided with a driving member 24 for driving the driving plate 20 to rise and fall.

[0034] The driving member 24 includes a driving block 25 fixedly mounted on the side of the driving plate 20, a first annular groove 26 and a second annular groove 27 are provided on the inner wall of the rotating cylinder 3, a threaded groove 28 is provided on the inner wall of the rotating cylinder 3, and the upper and lower ends of the threaded groove 28 are respectively connected to the first annular groove 26 and the second annular groove 27, and the first annular groove 26, the threaded groove 28 and the second annular groove 27 can all be slidably connected to the driving block 25, and the top end of the driving plate 20 is fixedly connected to a return spring 29 fixedly connected to the bottom of the hopper 4.

[0035] The shaking member 11 includes a feed cylinder 30 fixedly installed at the bottom of the feed hopper 4, and the outer wall of the feed cylinder 30 is slidably connected with a lifting cylinder 31 in the vertical direction. The screen 10 is fixedly installed at the bottom of the lifting cylinder 31, and the stirring shaft 7 passes through the screen 10 and is movably connected to the inner wall of the screen 10. The top end of the stirring shaft 7 is provided with a conveying member 32 for driving the screen 10 to lift and shake.

[0036] The conveying member 32 includes a rotating shaft 33 fixedly mounted on the top of the stirring shaft 7, a conical block 47 is fixedly connected to the top of the rotating shaft 33, a corrugated ring 34 is fixedly connected to the outer wall of the top of the rotating shaft 33, and the bottom surface of the corrugated ring 34 is wavy. A mounting tube 35 is fixedly connected to the screen 10, and a mounting ring 36 is fixedly connected to the inner wall of the mounting tube 35. The inner wall of the mounting ring 36 is movably connected to the outer wall of the rotating shaft 33, and a plurality of top blocks 37 are evenly and fixedly connected to the mounting ring 36.

[0037] The control member 22 includes a second tension spring 38 fixedly mounted on the upper end of the lifting cylinder 31 , and a push ring 39 is fixedly connected to the top end of the second tension spring 38 , and the push ring 39 is slidably connected to the outer wall of the feeding cylinder 30 along the vertical direction.

[0038] In this embodiment, molten resin is injected into the stirring barrel 2 through the feeding pipe 45, and the ultrafine calcium carbonate powder is input into the feeding barrel 30 through the feeding hopper 4 and falls on the upper side of the screen 10. The rotating member 23 is started to drive the stirring shaft 7 to rotate together with the rotating barrel 3. It is stipulated that the clockwise rotation of the rotating barrel 3 from the top view is positive rotation, and the counterclockwise rotation is reverse rotation. When the rotating barrel 3 rotates forward, the driving ring 16 is driven to rotate in the same direction through the friction of the inner wall, so that the driving rod 18 slides to the arc groove 17 is away from the end of the stirring shaft 7, the baffle 14 opens to the surroundings, and at the same time the driving block 25 will slide upward inside the threaded groove 28 until it slides into the first annular groove 26 at the top. The driving block 25 will continue to slide in the first annular groove 26 and will no longer move upward. At this time, the driving plate 20 reaches the highest point, the return spring 29 is compressed, and the top of the driving plate 20 will push the ring 39 up, so that the second tension spring 38 drives the lifting cylinder 31 to move upward, and the top surface of the top block 37 conflicts with the bottom surface of the corrugated ring 34.

[0039] At this time, when the stirring shaft 7 rotates to drive the stirring rods 8 around it to stir, the rotating shaft 33 at the top will be driven to rotate. The rotating shaft 33 drives the corrugated ring 34 to rotate continuously, pushing the top block 37 and the mounting ring 36 to move downward together, so that the mounting tube 35 and the screen 10 can be moved downward together and pulled up by the second tension spring 38. This reciprocating process can achieve the purpose of lifting and shaking the screen 10 and improve the uniformity of the internal powder feeding.

[0040] When the feeding is completed, the rotating cylinder 3 is controlled to rotate in the opposite direction, so that the driving block 25 is pushed by the return spring 29 and moves downward together with the driving plate 20 when it slides to the connecting position of the first annular groove 26 and the thread groove 28. The driving block 25 slides into the thread groove 28, and as the rotating cylinder 3 rotates, the driving block 25 gradually slides downward, driving the driving rod 18 and the lifting plate 13 to move downward together. At this time, due to the change in the rotation direction of the rotating cylinder 3, the friction force of the inner wall will preferentially drive the driving ring 16 to rotate in the opposite direction, so that the arc groove 17 drives the driving rod 18 to slide and close toward the middle, so as to block the bottom of the screen 10. After that, as the lifting plate 13 moves downward, the powder above the liquid in the mixing barrel 2 is pushed downward, and a small amount of air will overflow upward through the gap between the baffles 14, but most of the powder will be pushed downward by the baffle 14 until it is pushed into the liquid for mixing.

[0041] As the driving plate 20 moves downward, the lifting state of the push ring 39 is gradually released, and the push ring 39 moves downward together with the second tension spring 38, so that the lifting cylinder 31 and the screen 10 move downward for a distance, and the top surface of the top block 37 is released from the interference with the corrugated ring 34. At this time, the stirring shaft 7 drives the corrugated ring 34 to rotate and will not continue to drive the shaking of the screen 10, but only drives the baffle 14 and the lifting plate 13 in the closed state to move downward together, and can also drive the stirring rod 8 to stir in the reverse direction to improve the mixing efficiency. When the driving block 25 slides to the bottom of the threaded groove 28, the reset spring 29 is in a stretched state, and the driving block 25 gradually slides into the second annular groove 27. Thereafter, the driving block 25 and the lifting plate 13 no longer move downward.

[0042] Thereafter, the rotating drum 3 is controlled to rotate forward again, so that the driving block 25 can slide from the second annular groove 27 into the thread groove 28 at the position where the thread groove 28 and the second annular groove 27 are connected, and move up to the first annular groove 26 along with the thread groove 28. At this time, the baffle 14 is opened to all sides, and the liquid adhered to the bottom of the baffle 14 will be scraped off by the side wall of the lifting plate 13. After the lifting plate 13 moves to the top, the equipment is reset. Thereafter, the cable material in the mixing barrel 2 can be discharged through the discharge trough 46, or the powder raw material can be continued to be added for mixing by opening the top cover on the feed hopper 4.

[0043] It should be noted that the mesh holes of the screen 10 are relatively large and are only used to slow down the falling speed of the powder raw materials so that they can be evenly dispersed and will not cause blockage. At the same time, the shaking of the screen 10 will also reduce the probability of blockage. The elastic force of the first tension spring 15 is relatively small and is only used to assist the baffle 14 in pulling and resetting.

[0044] Example 2

[0045] See also Figure 1-Figure 10 Embodiment 2 is described. This embodiment further describes Embodiment 1. The rotating member 23 shown in the figure includes a driving motor 40 fixedly mounted on the base 1. The driving motor 40 is preferably of model Y80M1-2. The output end of the driving motor 40 is coaxially fixedly connected to the bottom end of the stirring shaft 7. A connecting shaft 41 is rotatably connected to the base 1. The stirring shaft 7 is connected to a transmission belt 42 connected to the pulley on the connecting shaft 41 through a pulley. A driving gear 43 is coaxially fixedly connected to the top of the connecting shaft 41. An outer tooth ring 44 meshing with the driving gear 43 is fixedly connected to the outer wall of the rotating cylinder 3.

[0046] In this embodiment, starting the drive motor 40 can drive the stirring shaft 7 to rotate, and the stirring shaft 7 drives the transmission belt 42 through the pulley, so that the pulley on the connecting shaft 41 rotates, so that the connecting shaft 41 drives the driving gear 43 to rotate, and the driving gear 43 drives the outer gear ring 44 to rotate, and the outer gear ring 44 drives the rotating cylinder 3 to rotate, wherein the stirring shaft 7 can drive the stirring rod 8 to stir regardless of whether it rotates forward or reverse, and can also drive the corrugated ring 34 to rotate, but when the rotating cylinder 3 rotates forward, the baffle 14 will be controlled to open and the lifting plate 13 will be moved up, and the screen 10 will be driven to move up, so that the top block 37 can be pushed and lifted by the corrugated ring 34, and when the rotating cylinder 3 rotates reversely, the baffle 14 will be controlled to close and the lifting plate 13 will be moved down, and the screen 10 will be driven to move down, thereby relieving the conflict between the top block 37 and the corrugated ring 34, and at this time, the rotation of the corrugated ring 34 will not continue to drive the screen 10 to shake, and at this time it is only used to transport the powder floating inside downward.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixing device for preparing cable materials with PP filler, characterized in that: include: A base (1), a stirring barrel (2) being fixedly connected to the base (1), a rotating drum (3) being rotatably connected to the upper end of the stirring barrel (2), a feed hopper (4) being rotatably connected to the top end of the rotating drum (3), a connecting frame (5) being fixedly connected to the stirring barrel (2) being fixedly connected to the bottom of the feed hopper (4); Also includes: A stirring mechanism (6), the stirring mechanism (6) comprising a stirring shaft (7) rotatably connected to the stirring barrel (2), a plurality of groups of stirring rods (8) being evenly and fixedly connected to the outer wall of the stirring shaft (7), and being used for driving the stirring rods (8) to rotate via the stirring shaft (7) to achieve a stirring function of the internal raw materials; A conveying mechanism (9), the conveying mechanism (9) comprising a screen (10) installed in the rotating cylinder (3), the stirring shaft (7) being provided with a shaking member (11) for driving the screen (10) to shake, so as to evenly convey the powder raw material to the inside of the stirring barrel (2), and being used for conveying the raw material and improving the mixing efficiency between the powder raw material and the molten liquid; An opening and closing mechanism (12), wherein the opening and closing mechanism (12) comprises a lifting plate (13) slidably connected to the inner wall of the stirring barrel (2) in a vertical direction, and a plurality of baffles (14) are evenly slidably connected to the lifting plate (13), and are used to drive the baffles (14) to open when the stirring shaft (7) rotates in the forward direction, and to enable the shaking member (11) to operate, so as to mix the powder raw material with the molten liquid; when the stirring shaft (7) rotates in the reverse direction, the baffles (14) are controlled to close, so as to block the bottom of the screen (10) and drive the lifting plate (13) to move downward, and at the same time release the operating state of the shaking member (11), so that the powder floating above the molten liquid is squeezed and pushed downward by the lifting plate (13) and the baffles (14). The opening and closing mechanism (12) further comprises a first tension spring (15) fixedly mounted on one side of the baffle plate (14), one end of the first tension spring (15) being fixedly connected to the lifting plate (13), a driving ring (16) being rotatably connected to the lifting plate (13), a plurality of groups of arc grooves (17) being evenly arranged on the driving ring (16), a driving rod (18) being fixedly connected to the baffle plate (14), the driving rod (18) passing through the arc groove (17) and being slidably connected to the inner wall of the arc groove (17), an outer wall of the driving ring (16) slidingly fittingly fitting to the inner wall of the rotating cylinder (3), a lifting member (19) for driving the lifting plate (13) to be lifted and lowered is arranged in the rotating cylinder (3).

2. A mixing device for preparing cable materials using PP filler according to claim 1, characterized in that: The lifting member (19) comprises a driving plate (20) installed in the rotating cylinder (3); a limit block (21) is fixedly connected to the top end of the driving rod (18) and is slidably connected to the driving plate (20) in a horizontal direction; a control member (22) is provided on the driving plate (20) for controlling the operating state of the shaking member (11); a rotating member (23) is provided on the base (1) for driving the rotating cylinder (3) to rotate when the stirring shaft (7) rotates; and a driving member (24) is provided on the rotating cylinder (3) for driving the driving plate (20) to be lifted and lowered.

3. A mixing device for preparing cable materials using PP filler according to claim 2, characterized in that: The driving member (24) comprises a driving block (25) fixedly mounted on a side surface of the driving plate (20); a first annular groove (26) and a second annular groove (27) are provided on an inner wall of the rotating cylinder (3); a thread groove (28) is provided on the inner wall of the rotating cylinder (3); upper and lower ends of the thread groove (28) are respectively connected to the first annular groove (26) and the second annular groove (27); the first annular groove (26), the thread groove (28) and the second annular groove (27) are all capable of being slidably connected to the driving block (25); and a return spring (29) fixedly connected to a bottom of the feed hopper (4) is fixedly connected to the top end of the driving plate (20).

4. A mixing device for preparing cable materials using PP filler according to claim 2, characterized in that: The shaking member (11) includes a feed cylinder (30) fixedly mounted on the bottom of the feed hopper (4); the outer wall of the feed cylinder (30) is slidably connected to a lifting cylinder (31) in a vertical direction; the screen (10) is fixedly mounted on the bottom of the lifting cylinder (31); the stirring shaft (7) passes through the screen (10) and is movably connected to the inner wall of the screen (10); and a conveying member (32) is provided at the top end of the stirring shaft (7) for driving the screen (10) to be lifted, lowered and shaken.

5. A mixing device for preparing cable materials using PP filler according to claim 4, characterized in that: The conveying member (32) comprises a rotating shaft (33) fixedly mounted on the top end of the stirring shaft (7); a corrugated ring (34) is fixedly connected to the outer wall of the top end of the rotating shaft (33); the bottom surface of the corrugated ring (34) is wavy; a mounting tube (35) is fixedly connected to the screen (10); a mounting ring (36) is fixedly connected to the inner wall of the mounting tube (35); the inner wall of the mounting ring (36) is movably sleeved with the outer wall of the rotating shaft (33); and a plurality of top blocks (37) are evenly and fixedly connected to the mounting ring (36).

6. A mixing device for preparing cable materials using PP filler according to claim 4, characterized in that: The control member (22) comprises a second tension spring (38) fixedly mounted on the upper end of the lifting cylinder (31), the top end of the second tension spring (38) being fixedly connected to a push ring (39), and the push ring (39) being slidably connected to the outer wall of the feeding cylinder (30) along the vertical direction.

7. A mixing device for preparing cable materials using PP filler according to claim 2, characterized in that: The rotating member (23) comprises a driving motor (40) fixedly mounted on the base (1); the output end of the driving motor (40) is coaxially fixedly connected to the bottom end of the stirring shaft (7); a connecting shaft (41) is rotatably connected to the base (1); the stirring shaft (7) is connected to a transmission belt (42) connected to the pulley on the connecting shaft (41) via a pulley transmission; a driving gear (43) is coaxially fixedly connected to the top end of the connecting shaft (41); and an outer toothed ring (44) meshing with the driving gear (43) is fixedly connected to the outer wall of the rotating cylinder (3).

8. The mixing device for preparing cable materials using PP filler according to claim 1, characterized in that: The conveying mechanism (9) further comprises an inlet pipe (45) which is connected to the side of the stirring barrel (2), and a discharge trough (46) is connected to the side of the stirring barrel (2).

9. A mixing device for preparing cable materials using PP filler according to claim 5, characterized in that: A conical block (47) is fixedly connected to the top end of the rotating shaft (33).

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