A compounding apparatus for preparing ultra-high molecular weight polyethylene compounds

Abstract

The application discloses a kind of preparation of ultra-high molecular weight polyethylene mixtures batching equipment, including base, the upper end of the base is equipped with mixing tank, the upper end of the base is fixedly connected with two vertical rods, the adjacent surface of two vertical rods is fixedly connected with connecting rod, the upper end of two connecting rods is rotatably connected with batching box, the opposite side of two vertical rods is equipped with pouring assembly, two transmission cavities are equipped in the base, the pouring assembly includes two mounting blocks arranged on vertical rod.The equipment can automatically pour when the weight of raw materials is appropriate, and the residue of powdery raw materials in the batching box can be avoided after pouring by shaking the batching box, improve the accuracy of mixing, and various raw materials can be uniformly and slowly dropped through the rotation of the discharge port, so that the raw materials are not accumulated in one place, the subsequent mixing efficiency is improved, and the discharge port can be prevented from being blocked by shaking the disc.

Description

Technical Field

[0001] This invention relates to the field of ultra-high molecular weight polyethylene (UHMWPE) processing technology, and in particular to a batching equipment for preparing UHMWPE mixtures. Background Technology

[0002] Ultra-high molecular weight polyethylene (UHMWPE) is a high-molecular-weight compound that is difficult to process. It possesses superior wear resistance, self-lubricating properties, high strength, stable chemical properties, and strong anti-aging characteristics. The processing of UHMWPE requires batching and mixing of various raw materials. However, existing batching equipment still faces the following problems:

[0003] Existing batching devices mostly require multiple raw materials to be proportioned before mixing. However, the current material proportioning requires manual weighing of each raw material according to the proportions, followed by pouring the materials into the mixing device. This operation is quite cumbersome and greatly increases the workload of the staff. At the same time, since some raw materials are in powder form, some raw materials are easily left in the batching box during the pouring process, which can lead to inaccurate proportions during mixing. Therefore, how to reasonably solve this problem is something we need to consider. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a batching device for preparing ultra-high molecular weight polyethylene (UHMWPE) mixtures. During use, this device automatically pours the raw materials when the weight is appropriate. After pouring, the shaking of the batching box prevents powdery raw materials from remaining inside, improving mixing accuracy. Simultaneously, the rotating discharge port ensures that various raw materials fall evenly and slowly, preventing accumulation and improving subsequent mixing efficiency. Furthermore, the shaking of the disc prevents clogging of the discharge port.

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

[0006] A batching device for preparing ultra-high molecular weight polyethylene (UHMWPE) mixture includes a base, a mixing trough at the upper end of the base, two vertical rods fixedly connected to the upper end of the base, connecting rods fixedly connected to adjacent surfaces of the two vertical rods, and batching boxes rotatably connected to the upper ends of the two connecting rods. Tilting components are provided on opposite sides of the two vertical rods. Two transmission cavities are provided within the base. Each tilting component includes two mounting blocks on the vertical rods, with a fourth rotating rod rotatably connected to adjacent sides of the two mounting blocks. The lower ends of the fourth rotating rods extend into corresponding transmission cavities. A third rotating rod is provided at the bottom of each transmission cavity, connected to the corresponding fourth rotating rod via a switching component. A second rotating rod is vertically positioned within the transmission cavity, connected to the third rotating rod via a second transmission component. Limiting blocks are fixedly connected to adjacent surfaces of the two vertical rods. Two reels are fixedly connected to the fourth rotating rod, with pull ropes wound around each reel. The two pull ropes are fixedly connected to the side of the corresponding batching box closest to the vertical rod.

[0007] Preferably, both of the transmission cavities are provided with a vibration assembly, which is used to vibrate the two dispensing boxes. The vibration assembly includes a thin rod disposed at the top of the transmission cavity, an incomplete gear disposed on the thin rod, a second gear that meshes with the incomplete gear disposed on the fourth rotating rod, and a first gear that meshes with each other disposed on both the thin rod and the second rotating rod. A one-way bearing is disposed between the second rotating rod and the corresponding first gear.

[0008] Preferably, the lower ends of the two second rotating rods extend to the outside, a drive motor is installed at the lower end of the base, and a first rotating rod is fixedly connected to the output shaft end of the drive motor. The first rotating rod and the two second rotating rods are connected by a first transmission assembly. The first transmission assembly includes sprockets disposed on the two second rotating rods and the first rotating rod, and the three sprockets are connected by a chain drive.

[0009] Preferably, the switching component includes a rectangular groove disposed at the upper end of the third rotating rod, an electromagnet is provided at the bottom of the inner side of the rectangular groove, a rectangular block is slidably connected in the rectangular groove, and the adjacent surfaces of the rectangular block and the electromagnet are elastically connected by a first spring.

[0010] Preferably, a weight sensor is provided at the bottom of the two ingredient boxes, and multiple counterweights are provided on the adjacent sides of the two ingredient boxes.

[0011] Preferably, the upper end of the first rotating rod extends into the mixing tank, and the outer wall of the first rotating rod is provided with a plurality of stirring rods along its axial direction. A disc is provided on the outer side of the first rotating rod, and an arc-shaped groove is provided at the upper end of the disc. A plurality of material discharge ports are provided at the inner bottom of the arc-shaped groove. The inner bottom of the mixing tank is an inclined surface, and a discharge pipe is connected to the bottom space of the mixing tank. A valve is provided on the discharge pipe.

[0012] Preferably, the second transmission assembly includes transmission wheels disposed on the second and third rotating rods, and the two transmission wheels are connected by a transmission belt.

[0013] Preferably, two movable grooves are symmetrically provided on the outer wall of the first rotating rod, and a movable block is slidably connected in each of the two movable grooves. The lower ends of the two movable blocks are elastically connected to the inner bottom of the corresponding movable grooves by a second spring. The opposite sides of the two movable blocks are fixedly connected to the inner wall of the disc. A plurality of hemispherical blocks are provided in the inner bottom of the disc. A plurality of L-shaped rods are fixedly connected to the inner walls of the left and right sides of the mixing tank.

[0014] The present invention has the following beneficial effects:

[0015] 1. Compared with the existing technology, when the output shaft of the drive motor rotates clockwise, the raw materials can be automatically poured out. For some powdery raw materials, the output shaft of the drive motor can rotate counterclockwise to make the mixing box shake, so that the powder in the mixing box can fall completely into the mixing tank, ensuring the mixing accuracy of subsequent mixing.

[0016] 2. Compared with the existing technology, by setting up a disc and an arc-shaped groove, the raw materials fall into the mixing tank through multiple discharge ports during the rotation of the disc, thereby avoiding the situation where the raw materials accumulate in one place, which would lead to a long time required for uniform mixing and improving the mixing efficiency of the device.

[0017] 3. Compared with the existing technology, the L-shaped rod and hemispherical block are designed to make the disc vibrate during the mixing process, so that all the raw materials in the arc groove can fall into the mixing tank and the discharge port can be prevented from being blocked. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the material preparation equipment for ultra-high molecular weight polyethylene (UHMWPE) mixture proposed in this invention.

[0019] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 5 for Figure 4 A magnified structural diagram at point C.

[0023] In the diagram: 1. Base, 2. Drive motor, 3. First transmission assembly, 4. First rotating rod, 5. Disc, 6. Arc groove, 7. Material outlet, 8. Stirring rod, 9. Second rotating rod, 10. Second transmission assembly, 11. Third rotating rod, 12. Thin rod, 13. First gear, 14. Mounting block, 15. Thread wheel, 16. Ingredient box, 17. Counterweight, 18. Weight sensor, 19. Incomplete gear, 20. Second gear, 21. Fourth rotating rod, 22. Electromagnet, 23. Rectangular groove, 24. First spring, 25. Rectangular block, 26. Slot, 27. Limiting block, 28. Connecting rod, 29. Discharge pipe, 30. L-shaped rod, 31. Hemispherical block, 32. Moving groove, 33. Moving block, 34. Second spring. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Example 1

[0026] Reference Figure 1-3 A batching device for preparing ultra-high molecular weight polyethylene (UHMWPE) mixture includes a base 1, a mixing trough at the upper end of the base 1, two vertical rods fixedly connected to the upper end of the base 1, and connecting rods 28 fixedly connected to adjacent surfaces of the two vertical rods. A batching box 16 is rotatably connected to the upper end of each of the two connecting rods 28, and a weight sensor 18 is provided at the bottom of the inner part of each of the two batching boxes 16. The device includes a display screen (not shown), and the weight sensors 18 generate electrical signals that are transmitted to the display screen to show the weight of the raw materials. Multiple counterweights 17 are provided on adjacent sides of each of the two batching boxes 16, and tilting components are provided on opposite sides of each of the two vertical rods. Two transmission chambers are provided inside the base 1, located on the left and right sides of the mixing trough.

[0027] The tilting assembly includes two mounting blocks 14 mounted on the vertical rod. The adjacent sides of the two mounting blocks 14 are rotatably connected to a fourth rotating rod 21. The lower ends of the fourth rotating rod 21 extend into the corresponding transmission chambers. A third rotating rod 11 is provided at the bottom of the transmission chamber. The third rotating rod 11 is connected to the corresponding fourth rotating rod 21 through a switching assembly. A second rotating rod 9 is vertically provided in the transmission chamber. The second rotating rod 9 and the third rotating rod 11 are connected by a second transmission assembly 10. Limiting blocks 27 are fixedly connected to the adjacent surfaces of the two vertical rods. Two thread wheels 15 are fixedly connected to the fourth rotating rod 21. Pull ropes are wound on the two thread wheels 15. The two pull ropes are fixedly connected to the side of the corresponding mixing box 16 near the vertical rod. The second transmission assembly 10 includes transmission wheels mounted on the second rotating rod 9 and the third rotating rod 11. The two transmission wheels are connected by a transmission belt.

[0028] Both transmission chambers are equipped with vibration components to vibrate the two ingredient boxes 16. Each vibration component includes a thin rod 12 located at the top of the transmission chamber, with an incomplete gear 19 on the thin rod 12. A second gear 20 that meshes with the incomplete gear 19 is located on the fourth rotating rod 21. Both the thin rod 12 and the second rotating rod 9 are equipped with a first gear 13 that meshes with each other. A one-way bearing is provided between the second rotating rod 9 and the corresponding first gear 13, so that the second rotating rod 9 will not drive the first gear 13 to rotate when rotated clockwise, but can drive the first gear 13 to rotate when rotated counterclockwise.

[0029] The lower ends of the two second rotating rods 9 extend to the outside. The lower end of the base 1 is equipped with a drive motor 2, which is a three-phase servo motor. The rotation direction of the output shaft of the drive motor 2 can be changed by changing two phases. The output shaft of the drive motor 2 is fixedly connected to a first rotating rod 4. The first rotating rod 4 and the two second rotating rods 9 are connected by a first transmission assembly 3. The first transmission assembly 3 includes sprockets set on the two second rotating rods 9 and the first rotating rod 4. The three sprockets are connected by a chain drive. The radius of the sprocket on the first rotating rod 4 is twice that of the sprocket on the second rotating rod 9, so as to avoid slippage during transmission.

[0030] The switching component includes a rectangular slot 23 located at the upper end of the third rotating rod 11. An electromagnet 22 is located at the bottom of the rectangular slot 23. A power supply and a controller are provided. The power supply, controller, drive motor 2, and two electromagnets 22 form a circuit through wires. Since the two electromagnets 22 are rotating, a rotary joint can be installed in the circuit to connect the electromagnets 22. The controller can control the direction of the current passing through the drive motor 2, thereby changing the magnetic poles of the electromagnets 22 and the rotation direction of the output shaft of the drive motor 2. A rectangular block 25 is slidably connected inside the rectangular slot 23. The adjacent surfaces of the rectangular block 25 and the electromagnets 22 are elastically connected by a first spring 24. The rectangular block 25 is magnetic. When the current passing through the electromagnet 22 is a positive current, the adjacent surfaces of the electromagnet 22 and the rectangular block 25 are repelled by the same polarity. When the current passing through the electromagnet 22 is a reverse current, the adjacent surfaces of the electromagnet 22 and the rectangular block 25 are attracted by opposite polarities.

[0031] The upper end of the first rotating rod 4 extends into the mixing tank. Multiple stirring rods 8 are provided on the outer wall of the first rotating rod 4 along its axial direction. A disc 5 is provided on the outer side of the first rotating rod 4. An arc-shaped groove 6 is provided on the upper end of the disc 5. Multiple material discharge ports 7 are provided on the inner bottom of the arc-shaped groove 6. The inner bottom of the mixing tank is a slope. The bottom space of the mixing tank is connected to a discharge pipe 29. A valve is provided on the discharge pipe 29.

[0032] The functional principle of this invention can be explained by the following operation: When mixing, various raw materials are first poured into the mixing box 16 in batches. At this time, the weight of the raw materials will cause the weight sensor 18 to generate an electrical signal. The electrical signal can be transmitted to the display screen to display the weight of the raw materials. When the raw materials in the two mixing boxes 16 reach the predetermined weight, the addition of raw materials is stopped.

[0033] Then start the drive motor 2, so that the drive motor 2 drives the first rotating rod 4 to rotate clockwise. At this time, the first transmission component 3 drives the two second rotating rods 9 to rotate clockwise. Since there is a one-way bearing between the two first gears 13 and the corresponding second rotating rods 9, and the two first gears 13 are bonded together, the rotation of the second rotating rods 9 will not drive the first gears 13 to rotate.

[0034] The rotation of the two second rotating rods 9 drives the third rotating rod 11 to rotate through the second transmission assembly 10. Since the output shaft of the drive motor 2 rotates clockwise, the current through the two electromagnets 22 is also positive, so that the electromagnets 22 and the corresponding rectangular blocks 25 repel each other in the same direction, so that the rectangular blocks 25 are always in the slot 26. At this time, the third rotating rod 11 will drive the corresponding fourth rotating rod 21 to rotate clockwise, so that the pull rope on the corresponding reel 15 will be loosened. Under the action of multiple counterweights 17, the two mixing boxes 16 rotate relative to each other, and then the two mixing boxes 16 tilt downward, so that the raw materials fall into the arc-shaped groove 6 under the action of gravity.

[0035] It is worth mentioning that during the clockwise rotation of the third rotating rod 11, the second gear 20 will rotate. When the second gear 20 is not meshed with the incomplete gear 19, it will not drive the thin rod 12 to rotate. When the incomplete gear 19 is meshed with the second gear 20, the thin rod 12 will rotate, but the first gear 13 on the second rotating rod 9 will still be rotating clockwise. When the incomplete gear 19 is disengaged from the second gear 20, the second rotating rod 9 cannot drive the corresponding first gear 13 to rotate, so the rotation of the thin rod 12 no longer has a driving source and will not affect the rotation of the second rotating rod 9.

[0036] After the material in the mixing box 16 has been poured out, since some raw material powder may remain in the mixing box 16, in order to ensure the accuracy of the raw material mixing, the output shaft of the drive motor 2 can be reversed. At this time, the current through the two electromagnets 22 is opposite, and the two electromagnets 22 exert an attraction on the rectangular block 25, which will cause the two rectangular blocks 25 to move down into the rectangular groove 23 and disengage from the slot 26. At this time, the third rotating rod 11 and the fourth rotating rod 21 disengage. The output shaft of the drive motor 2 rotates counterclockwise, which will drive the second rotating rod 9 to rotate counterclockwise, causing the thin rod 12 to rotate clockwise, and thus driving the incomplete gear 19 to rotate.

[0037] When the incomplete gear 19 meshes with the second gear 20, the second gear 20 rotates, causing the fourth rotating rod 21 to rotate counterclockwise. This causes the multiple pull ropes to be wound back onto the corresponding reels 15, making the two mixing boxes 16 rotate upwards. When the incomplete gear 19 and the second gear 20 no longer mesh, the mixing boxes 16 rotate downwards again under their own weight, causing the corresponding fourth rotating rod 21 to rotate clockwise. Through the continuous meshing and disengagement of the incomplete gear 19 and the second gear 20, the two mixing boxes 16 continuously swing up and down, colliding with the limiting block 27. This ensures that the powder in the mixing boxes 16 can fall completely into the mixing tank under the action of vibration, avoiding inaccurate mixing accuracy in the later stages.

[0038] During the rotation of the first rotating rod 4, multiple stirring rods 8 and disc 5 will be driven to rotate. When the raw material falls into the arc-shaped groove 6, the raw material in the arc-shaped groove 6 can fall into the bottom of the mixing tank through the discharge port 7. Since the disc 5 is rotating, the multiple raw materials entering the arc-shaped groove 6 can fall evenly into the mixing tank, thereby avoiding the accumulation of the same raw material in one place before mixing, which would require a long time to fully mix the raw material later. Thus, the mixing efficiency of the device can be improved during the rotation of the stirring rod 8.

[0039] After the raw materials have been poured out, the two ingredient boxes 16 can be manually returned to their original positions. Then, the drive motor 2 will continuously reverse. Since the ingredient boxes 16 are not moving, the fourth rotating rod 21 will not rotate, and the pull rope will continuously wind around the reel 15 for easy use next time.

[0040] Compared with the existing technology, when the output shaft of the drive motor 2 rotates clockwise, the raw materials can be automatically poured out. For some powdery raw materials, the output shaft of the drive motor 2 can rotate counterclockwise to make the mixing box 16 shake, so that the powder in the mixing box 16 can fall completely into the mixing tank, ensuring the mixing accuracy of subsequent mixing.

[0041] By setting up the disc 5 and the arc-shaped groove 6, the raw materials fall into the mixing tank through multiple discharge ports 7 during the rotation of the disc 5, thereby avoiding the situation where the raw materials accumulate in one place, which would lead to a long time required for uniform mixing and improving the mixing efficiency of the device.

[0042] Example 2

[0043] Reference Figure 4-5The difference between this embodiment and embodiment 1 is that two moving grooves 32 are symmetrically provided on the outer wall of the first rotating rod 4. Moving blocks 33 are slidably connected in both moving grooves 32. The lower ends of the two moving blocks 33 are elastically connected to the inner bottom of the corresponding moving groove 32 by a second spring 34. The opposite sides of the two moving blocks 33 are fixedly connected to the inner wall of the disc 5. Multiple hemispherical blocks 31 are provided on the inner bottom of the disc 5. Multiple L-shaped rods 30 are fixedly connected to the inner walls of the left and right sides of the mixing tank. The upper end of the L-shaped rod 30 is an arc surface, and the upper end of the two moving blocks 33 is an inclined surface, which can prevent raw materials from remaining in the moving grooves 32.

[0044] In this embodiment, during the mixing process, as the disc 5 rotates, the hemispherical block 31 continuously contacts and disengages from the L-shaped rod 30. When the L-shaped rod 30 contacts the hemispherical block 31, the disc 5 and the moving block 33 move upward. When the hemispherical block 31 disengages from the L-shaped rod 30, the disc 5 and the moving block 33 move back under the influence of gravity. At this time, due to the inertia of the disc 5 and the moving block 33, the disc 5 is in a state of up-and-down shaking under the elastic action of the second spring 34. In this shaking state, it can be ensured that the raw material in the arc groove 6 falls completely into the mixing tank, and the discharge port 7 can also be prevented from being blocked by the raw material.

[0045] Compared with the existing technology, the L-shaped rod 30 and the hemispherical block 31 make the disc 5 vibrate during the mixing process, so that all the raw materials in the arc groove 6 can fall into the mixing tank, and the discharge port 7 can be prevented from being blocked.

[0046] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A batching device for preparing ultra-high molecular weight polyethylene mixture, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a mixing trough. Two vertical rods are fixedly connected to the upper end of the base (1). A connecting rod (28) is fixedly connected to the adjacent surfaces of the two vertical rods. A mixing box (16) is rotatably connected to the upper end of the two connecting rods (28). A tilting component is provided on the opposite sides of the two vertical rods. Two transmission cavities are provided inside the base (1). The tilting assembly includes two mounting blocks (14) on the vertical rod. The adjacent sides of the two mounting blocks (14) are rotatably connected to a fourth rotating rod (21). The lower ends of the fourth rotating rod (21) extend into the corresponding transmission cavity. The bottom of the transmission cavity is provided with a third rotating rod (11). The third rotating rod (11) and the corresponding fourth rotating rod (21) are connected by a switching assembly. The transmission cavity is vertically provided with a second rotating rod (9). The second rotating rod (9) and the third rotating rod (11) are connected by a second transmission assembly (10). The adjacent surfaces of the two vertical rods are fixedly connected with limit blocks (27). The fourth rotating rod (21) is fixedly connected with two thread wheels (15). The two thread wheels (15) are wound with pull ropes. The two pull ropes are fixedly connected to the side of the corresponding mixing box (16) near the vertical rod. Both of the transmission cavities are equipped with a vibration assembly, which is used to vibrate the two dispensing boxes (16). The vibration assembly includes a thin rod (12) set at the top of the transmission cavity. The thin rod (12) is equipped with an incomplete gear (19). The fourth rotating rod (21) is equipped with a second gear (20) that cooperates with the incomplete gear (19). The thin rod (12) and the second rotating rod (9) are both equipped with a first gear (13) that meshes with each other. A one-way bearing is provided between the second rotating rod (9) and the corresponding first gear (13). The switching assembly includes a rectangular groove (23) set at the upper end of the third rotating rod (11), an electromagnet (22) is provided at the bottom of the inner side of the rectangular groove (23), a rectangular block (25) is slidably connected in the rectangular groove (23), and the adjacent surfaces of the rectangular block (25) and the electromagnet (22) are elastically connected by a first spring (24). The bottom of the two ingredient boxes (16) is provided with a weight sensor (18), and multiple counterweights (17) are provided on the adjacent sides of the two ingredient boxes (16).

2. The batching equipment for preparing ultra-high molecular weight polyethylene mixture according to claim 1, characterized in that: The lower ends of the two second rotating rods (9) extend to the outside. A drive motor (2) is installed at the lower end of the base (1). The output shaft of the drive motor (2) is fixedly connected to a first rotating rod (4). The first rotating rod (4) and the two second rotating rods (9) are connected by a first transmission assembly (3). The first transmission assembly (3) includes sprockets on the two second rotating rods (9) and the first rotating rod (4). The three sprockets are connected by a chain drive.

3. The batching equipment for preparing ultra-high molecular weight polyethylene mixture according to claim 2, characterized in that: The upper end of the first rotating rod (4) extends into the mixing tank. Multiple stirring rods (8) are provided on the outer wall of the first rotating rod (4) along its axial direction. A disc (5) is provided on the outer side of the first rotating rod (4). An arc groove (6) is provided at the upper end of the disc (5). Multiple material discharge ports (7) are provided at the bottom of the arc groove (6). The bottom of the mixing tank is an inclined surface. A discharge pipe (29) is connected to the bottom space of the mixing tank. A valve is provided on the discharge pipe (29).

4. The batching equipment for preparing ultra-high molecular weight polyethylene mixture according to claim 1, characterized in that: The second transmission assembly (10) includes transmission wheels disposed on the second rotating rod (9) and the third rotating rod (11), and the two transmission wheels are connected by a transmission belt.

5. The batching equipment for preparing ultra-high molecular weight polyethylene mixture according to claim 4, characterized in that: Two symmetrical moving grooves (32) are provided on the outer wall of the first rotating rod (4). Moving blocks (33) are slidably connected in both moving grooves (32). The lower ends of the two moving blocks (33) are elastically connected to the inner bottom of the corresponding moving groove (32) by a second spring (34). The opposite sides of the two moving blocks (33) are fixedly connected to the inner wall of the disc (5). Multiple hemispherical blocks (31) are provided at the inner bottom of the disc (5). Multiple L-shaped rods (30) are fixedly connected to the inner walls of the left and right sides of the mixing tank.

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