Silica powder metering device for inclined belts and method of use thereof

Abstract

The application discloses a silicon powder metering device for an inclined belt and a use method thereof, and belongs to the technical field of silicon powder metering. The silicon powder metering device for the inclined belt comprises a hopper arranged on the upper side of a mixing cylinder through a supporting plate, and further comprises a moving base which is slidingly connected between the hopper and the mixing cylinder, and is internally provided with a quantitative discharging assembly; a material pushing assembly which is arranged on the hopper and is used for pushing the silicon powder in the hopper to the quantitative discharging assembly; and a pulling assembly which is connected with the material pushing assembly and is used for driving the moving base to reciprocatingly displace between the hopper and the mixing cylinder; wherein the top of the mixing cylinder is provided with a feeding port which is matched with the quantitative discharging assembly; the application is convenient for accurately metering the silicon powder, improves the accuracy of the silicon powder batching, and makes the silicon powder quantitatively and orderly discharge, so as to ensure the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of silicon powder metering technology, and in particular to a silicon powder metering device for inclined belt conveyors and its usage method. Background Technology

[0002] With the rapid development of urban infrastructure and urbanization, the consumption of concrete has increased significantly, resulting in huge raw material consumption, especially for high-strength concrete (C50 and above), which requires even more cement. Cement production has a significant environmental impact, particularly in terms of carbon dioxide emissions; producing one ton of cement clinker emits approximately 640 kg of carbon dioxide. Reducing cement consumption and carbon dioxide emissions can effectively improve the ecological environment. Silica fume is a byproduct or symbiotic product of the production of ferrosilicon alloys or industrial silicon using electric arc furnaces. The application of silica fume in concrete can maximize the effect of cement, effectively disperse cementitious materials, significantly improve the workability of concrete, and significantly enhance its later-stage strength. Adding silica fume at 5-10% of the total cementitious material weight can reduce the amount of cement used in concrete, improve economic efficiency, and reduce environmental pollution, making it a promising green engineering project.

[0003] Before applying silica fume, it is necessary to accurately determine the mix proportion of silica fume concrete through experiments, and to determine key technical parameters such as the optimal dosage of silica fume, the order of feeding, and the mixing time. Simultaneously, by comparing ordinary concrete with silica fume concrete through experiments, relevant data should be recorded and accumulated to ultimately determine the optimal mix proportion and production process. However, in existing silica fume mixing experiments, silica fume is fed via inclined belt conveyor. After being conveyed to the discharge hopper, the weight of the silica fume is generally measured and discharged using an electronic scale. However, the electronic scale sensor is susceptible to interference, errors are caused by powder suspension, and the impact force during weighing can affect the accuracy of silica fume measurement, impacting the judgment of silica fume batching. Furthermore, due to its fine particles and adhesiveness, silica fume is prone to clumping or clogging during the discharge process, affecting the discharge progress and reducing work efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a silicon powder metering device for inclined belts and its usage method.

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

[0006] A silicon powder metering device for inclined belt conveyors includes a hopper mounted on the upper side of a mixing cylinder via a support plate, and further includes:

[0007] A movable seat is slidably connected between a hopper and a mixing cylinder, and a quantitative feeding component is provided inside the movable seat;

[0008] A feeding assembly, which is mounted on a hopper, is used to push silicon powder in the hopper to a metering feeding assembly;

[0009] And a traction assembly, which is connected to a pushing assembly, for driving the moving seat to move back and forth between the hopper and the mixing cylinder;

[0010] The mixing cylinder has a feed inlet at the top that works in conjunction with the quantitative feeding component.

[0011] Preferably, the pushing assembly includes a mounting plate fixed on the hopper, a drive motor fixed on the mounting plate, a lead screw connected to the output shaft of the drive motor and rotatably connected to the mounting plate, a sleeve threaded to the lead screw, a connecting member fixed to the sleeve, and a pushing block disposed at the bottom of the connecting member, wherein the pushing block is slidably connected to the discharge port of the hopper.

[0012] Preferably, the pulling assembly includes a double-wire drum mounted on a lead screw and a first pull rope and a second pull rope wound and connected to the double-wire drum. Each of the first pull ropes and the second pull rope is provided with an elastic telescopic rod at the end away from the double-wire drum. The two elastic telescopic rods are respectively connected to the two ends of the movable seat. A slider is fixedly provided at the bottom of the movable seat, and a groove for sliding the slider is provided at the mixing cylinder.

[0013] Preferably, the hopper is connected to several positioning rings via support rods, and the first or second pull rope is slidably connected to the inner wall of the positioning ring.

[0014] Preferably, a connecting shell is rotatably connected to the bottom of the lead screw, and the two sides of the connecting shell are slidably connected to the connecting parts. A secondary bevel gear is rotatably connected to the side wall of the connecting shell via a rotating shaft. A main bevel gear that meshes with the secondary bevel gear is provided on the lead screw. A fixed rod is fixedly provided on the secondary bevel gear. A swing rod is slidably connected to the outside of the fixed rod. A positioning rod that is rotatably connected to the swing rod is fixedly provided on the inner wall of the hopper. An movable groove for the fixed rod to slide is provided on the swing rod.

[0015] Preferably, the quantitative feeding assembly includes a rotating block rotatably connected to a movable seat, a quantitative groove is provided on the rotating block, an electric push rod is fixed in the quantitative groove, and an adjustment block is provided at the end of the electric push rod.

[0016] Preferably, the quantitative feeding assembly further includes a rotating rod fixedly connected to the rotating block, a torsion spring is provided on the rotating rod, a movable gear is fixedly provided on the rotating rod, and a rack plate that meshes with the movable gear is provided on the top of the mixing cylinder.

[0017] Preferably, the rotating rod is provided with an air guide tube, the rotating block is provided with a pneumatic cavity that communicates with the air guide tube, a piston block is slidably connected in the pneumatic cavity, an elastic element is provided between the piston block and the inner wall of the pneumatic cavity, the piston block moves in a metering groove, and a connecting groove is provided on the piston block for connecting the pneumatic cavity and the metering groove.

[0018] Preferably, the end of the air guide tube away from the pneumatic cavity is connected to a rotary joint, and the end of the rotary joint away from the air guide tube is connected to the air supply equipment through an air pipe.

[0019] The present invention also discloses a method of using a silicon powder metering device for inclined belt conveyors, comprising the following steps:

[0020] S1: After the silicon powder is conveyed to the hopper by the inclined belt, the drive motor is controlled to run, so that the drive motor drives the lead screw to rotate clockwise, and the sleeve moves down along the lead screw axis. When the sleeve moves down, it drives the pusher block to move down through the connecting piece.

[0021] When the lead screw rotates clockwise, the first pull rope applies a pulling force to the right side of the moving seat, causing the moving seat to move to the lower side of the hopper. After the moving seat is limited to the right, the elastic telescopic rod connected to the first pull rope is stretched. At this time, the metering groove of the rotating block is placed directly below the hopper discharge port.

[0022] S2: As the pusher block continues to move downward, it presses the silicon powder accumulated at the discharge port into the metering tank, so that the silicon powder is tightly filled in the metering tank.

[0023] S3: Then the drive motor drives the lead screw to rotate counterclockwise, and the sleeve drives the pusher block to move upward through the connecting piece, and the pusher block moves away from the hopper discharge port;

[0024] The double-wire drum releases the first pull rope and winds the second pull rope. When the second pull rope is wound up, it applies a pulling force to the left side of the moving seat, and the moving seat drives the rotating block to move towards the feed port of the mixing cylinder.

[0025] S4: During the movement of the rotating block with the moving seat, the movable gear on the rotating rod meshes with the rack plate for transmission. The movable gear drives the rotating block to rotate through the rotating rod, causing the metering groove of the rotating block to flip downward.

[0026] S5: When the rotating block metering groove is vertically downward and directly facing the feed inlet of the mixing cylinder, the moving seat moves to the left limit and cannot move to the left any further. The elastic telescopic rod connected to the second pull rope is stretched.

[0027] S6: Then, air is introduced into the pneumatic chamber through the air supply equipment. The piston block moves under force and moves into the metering tank. The piston block pushes the compacted silicon powder in the metering tank, causing the tightly structured silicon powder to loosen and fall off. Then, a large amount of air is discharged into the metering tank through the connecting tank, blowing the silicon powder in the metering tank, so that the silicon powder quickly enters the mixing cylinder, completing the single metering feeding of silicon powder.

[0028] S7: Repeat steps S1-S6, repeatedly feeding silicon powder from the hopper into the mixing cylinder until the amount of silicon powder in the mixing cylinder meets the test requirements.

[0029] As can be seen from the above technical solutions, the present invention has the following beneficial effects:

[0030] 1. In this invention, when the pushing component is working, the silicon powder is tightly filled into the quantitative feeding component, which facilitates accurate measurement of silicon powder and improves the accuracy of silicon powder feeding. When the pushing component is working, it drives the pulling component to move, so that the silicon powder is fed quantitatively and orderly, ensuring work efficiency.

[0031] 2. In this invention, air is introduced into the pneumatic cavity through the air supply device, the piston block moves under force and moves into the metering groove. The piston block pushes the compacted silicon powder in the metering groove, causing the tightly structured silicon powder to loosen and fall off. Subsequently, a large amount of air is discharged into the metering groove through the connecting groove, blowing the silicon powder in the metering groove, so that the silicon powder quickly enters the mixing cylinder, ensuring the silicon powder feeding speed, thereby improving work efficiency.

[0032] 3. In this invention, the rotation of the lead screw drives the main bevel gear and the secondary bevel gear to mesh and transmit power. When the secondary bevel gear rotates, it drives the fixed rod to rotate. When the fixed rod moves, it drives the swing rod to swing back and forth around the positioning rod as the center. This causes the swing rod to quickly move the silicon powder in the hopper, making the silicon powder in the hopper move quickly and be pushed to the hopper discharge port. This allows the silicon powder in the hopper to fall quickly and fill the metering groove on the lower side. This avoids the situation where the silicon powder in the metering groove is not filled due to insufficient amount or loose structure when the pusher block presses down on the silicon powder, which would affect the accuracy of silicon powder metering. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 For the present invention Figure 1 Enlarged structural diagram of section A in the middle;

[0035] Figure 3 This is a schematic diagram of the structure of the metering tank during material feeding according to the present invention;

[0036] Figure 4 For the present invention Figure 3 Enlarged structural diagram of section B in the middle;

[0037] Figure 5 This is a schematic diagram of the metering trough structure during material receiving according to the present invention;

[0038] Figure 6 For the present invention Figure 5 Enlarged structural diagram of section C;

[0039] Figure 7 This is a cross-sectional structural diagram of the rotating block of the present invention;

[0040] Figure 8 This is a schematic diagram of the external structure of the air duct of the present invention;

[0041] Figure 9 This is a schematic diagram of the material pushing assembly of the present invention;

[0042] Figure 10 For the present invention Figure 9 Enlarged structural diagram of section D in the middle;

[0043] Figure 11 This is a schematic diagram of the internal structure of the connecting shell of the present invention.

[0044] In the diagram: 1. Mixing cylinder; 101. Feed inlet; 2. Hopper; 3. Moving base; 301. Sliding block; 302. Slide groove; 4. Mounting plate; 401. Drive motor; 402. Lead screw; 4021. Main bevel gear; 403. Sleeve; 404. Connector; 405. Push block; 5. Double-wire drum; 501. First pull rope; 502. Second pull rope; 503. Elastic telescopic rod; 6. Rotating block; 601. Metering rod 602. Slot; 603. Electric push rod; 604. Adjusting block; 7. Rotating rod; 705. Movable gear; 8. Rack plate; 9. Air guide pipe; 906. Rotary joint; 10. Pneumatic chamber; 1007. Piston block; 1008. Elastic element; 11. Connecting slot; 12. Connecting shell; 121. Secondary bevel gear; 1211. Fixed rod; 122. Swing rod; 1221. Movable slot; 123. Positioning rod; 13. Positioning ring. Detailed Implementation

[0045] A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0047] Reference Figure 1 , Figure 3 and Figure 5As shown, this embodiment proposes a silicon powder metering device for inclined belt conveyors, including a hopper 2 mounted on the upper side of a mixing cylinder 1 via a support plate, and further including a movable seat 3, a pushing assembly, and a pulling assembly. The movable seat 3 is slidably connected between the hopper 2 and the mixing cylinder 1. A quantitative feeding assembly is provided inside the movable seat 3. The pushing assembly is mounted on the hopper 2 and is used to push the silicon powder in the hopper 2 to the quantitative feeding assembly. The pulling assembly is connected to the pushing assembly and is used to drive the movable seat 3 to move back and forth between the hopper 2 and the mixing cylinder 1. The top of the mixing cylinder 1 is provided with a feed inlet 101 that cooperates with the quantitative feeding assembly.

[0048] After the silicon powder is conveyed to hopper 2 by the inclined belt, the silicon powder accumulates in hopper 2. The pushing component is controlled to press down the silicon powder in hopper 2 and make it tightly fill the quantitative feeding component. An electric heating film can be added to the inner wall of hopper 2 according to the actual situation to prevent the silicon powder from getting damp in hopper 2, which facilitates accurate measurement of silicon powder and improves the accuracy of silicon powder batching. When the pushing component is working, it drives the pulling component to move, so that the silicon powder is fed quantitatively and orderly, ensuring work efficiency.

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, the pushing assembly further includes a mounting plate 4 fixed on the hopper 2, a drive motor 401 fixed on the mounting plate 4, a lead screw 402 connected to the output shaft of the drive motor 401 and rotatably connected to the mounting plate 4, a sleeve 403 threadedly connected to the lead screw 402, a connecting member 404 fixedly connected to the sleeve 403, and a pushing block 405 disposed at the bottom of the connecting member 404. The pushing block 405 is slidably connected to the discharge port of the hopper 2.

[0050] Furthermore, the quantitative feeding assembly includes a rotating block 6 rotatably connected to the movable seat 3, a quantitative groove 601 is provided on the rotating block 6, an electric push rod 602 is fixed in the quantitative groove 601, and an adjustment block 603 is provided at the end of the electric push rod 602.

[0051] When the feeding assembly is working, the drive motor 401 is controlled to run, causing the drive motor 401 to drive the lead screw 402 to rotate clockwise. The sleeve 403 moves downward along the axial direction of the lead screw 402. When the sleeve 403 moves downward, it drives the feeding block 405 to move downward through the connecting piece 404. As the feeding block 405 continues to move downward, it pushes the silicon powder accumulated at the feeding port into the metering trough 601, so that the silicon powder is tightly filled in the metering trough 601. The volume of silicon powder tightly filled in the metering trough 601 is fixed, so its mass is fixed. If it is necessary to adjust the mass of silicon powder in the metering trough 601, the operator controls the electric push rod 602 to run, so that the electric push rod 602 drives the adjusting block 603 to move in the metering trough 601, thereby adjusting the space size of the metering trough 601. The mass of silicon powder in the metering trough 601 with different volumes is different, thus realizing the metering of silicon powder of different masses.

[0052] It should be noted that a guide rod should be provided on the mounting plate 4 to limit the movement direction of the sleeve 403. The design of the guide rod is common knowledge and will not be elaborated here.

[0053] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 9 As shown, in a preferred embodiment, based on the above method, the pulling assembly further includes a double-wire drum 5 mounted on the lead screw 402 and a first pull rope 501 and a second pull rope 502 wound and connected to the double-wire drum 5. The ends of the first pull rope 501 and the second pull rope 502 away from the double-wire drum 5 are each provided with an elastic telescopic rod 503. The two elastic telescopic rods 503 are respectively connected to the two ends of the movable seat 3. A slider 301 is fixed at the bottom of the movable seat 3. A groove 302 for sliding the slider 301 is provided on the side support plate of the mixing cylinder 1.

[0054] When the feeding assembly is working, the rotation of the lead screw 402 will drive the double-wire drum 5 to rotate. When the lead screw 402 rotates clockwise, the first pull rope 501 applies a pulling force to the right side of the moving seat 3, causing the moving seat 3 to move to the lower side of the hopper 2. After the moving seat 3 is limited to the right, the elastic telescopic rod 503 connected to the first pull rope 501 is stretched. At this time, the metering groove 601 of the rotating block 6 is placed directly below the feeding port of the hopper 2, so that there is sufficient time for feeding into the metering groove 601. When the lead screw 402 rotates counterclockwise, the double-wire drum 5 applies a pulling force to the right side of the moving seat 3. The first pull rope 501 is released and the second pull rope 502 is wound up. When the second pull rope 502 is wound up, a pulling force is applied to the left side of the moving seat 3. The moving seat 3 drives the rotating block 6 to move towards the feed inlet 101 of the mixing cylinder 1. When the metering groove 601 of the rotating block 6 is vertically downward and directly facing the feed inlet 101 of the mixing cylinder 1, the moving seat 3 moves to the left limit and cannot continue to move to the left. The elastic telescopic rod 503 connected to the second pull rope 502 will be stretched, so that the silicon powder in the metering groove 601 has enough time to be discharged.

[0055] It should be noted that the hopper 2 is connected to several positioning rings 13 by a support rod, and the first pull rope 501 or the second pull rope 502 is slidably connected to the inner wall of the positioning ring 13; the positioning ring 13 can guide the first pull rope 501 and the second pull rope 502, so that the first pull rope 501 or the second pull rope 502 can apply force to the moving seat 3 correctly.

[0056] Reference Figure 1 , Figure 3 , Figure 5 , Figure 9 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, the bottom of the lead screw 402 is rotatably connected to a connecting shell 12, the two sides of the connecting shell 12 are slidably connected to the connecting member 404, the side wall of the connecting shell 12 is rotatably connected to a secondary bevel gear 121 via a rotating shaft, the lead screw 402 is provided with a main bevel gear 4021 that meshes with the secondary bevel gear 121, the secondary bevel gear 121 is fixedly provided with a fixing rod 1211, the outer side of the fixing rod 1211 is slidably connected to a swing rod 122, the inner wall of the hopper 2 is fixedly provided with a positioning rod 123 that is rotatably connected to the swing rod 122, and the swing rod 122 is provided with an active groove 1221 for the fixed rod 1211 to slide.

[0057] When the lead screw 402 rotates, the main bevel gear 4021 meshes with the secondary bevel gear 121 inside the connecting housing 12. When the secondary bevel gear 121 rotates, it drives the fixed rod 1211 to rotate. When the fixed rod 1211 moves, it drives the swing rod 122 to swing back and forth around the positioning rod 123. This causes the swing rod 122 to quickly move the silicon powder in the hopper 2, making the silicon powder in the hopper 2 move quickly and be pushed to the discharge port of the hopper 2. This allows the silicon powder in the hopper 2 to fall quickly and fill the metering groove 601 on the lower side. This prevents the silicon powder in the metering groove 601 from being insufficiently filled or having a loose structure when the pusher block 405 presses down on the silicon powder, which would affect the accuracy of silicon powder metering.

[0058] Reference Figure 1 , Figure 3 and Figure 5 As shown, in a preferred embodiment, based on the above method, the quantitative feeding assembly further includes a rotating rod 7 fixedly connected to the rotating block 6, a torsion spring is provided on the rotating rod 7, a movable gear 701 is fixedly provided on the rotating rod 7, and a rack plate 8 that meshes with the movable gear 701 is provided on the top of the mixing cylinder 1.

[0059] After the metering tank 601 has finished receiving the metered amount of silicon powder, during the displacement of the rotating block 6 with the moving seat 3, the movable gear 701 on the rotating rod 7 meshes with the rack plate 8 for transmission. The movable gear 701 drives the rotating block 6 to rotate through the rotating rod 7, causing the metering tank 601 of the rotating block 6 to flip downwards until the metering tank 601 of the rotating block 6 is vertically facing downwards and directly opposite the feed inlet 101 of the mixing cylinder 1, thereby facilitating the discharge of silicon powder in the metering tank 601.

[0060] Reference Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, in a preferred embodiment, based on the above method, a further step is to provide an air guide pipe 9 inside the rotating rod 7, and a pneumatic cavity 10 connected to the air guide pipe 9 is opened inside the rotating block 6. A piston block 1001 is slidably connected inside the pneumatic cavity 10. A polyurethane sealing ring is provided on the outer periphery of the piston block 1001, and the gap between the piston block 1001 and the inner wall of the pneumatic cavity is ≤0.1mm. An elastic element 1002 is provided between the piston block 1001 and the inner wall of the pneumatic cavity 10. The piston block 1001 moves within the metering groove 601, and a connecting groove 11 for connecting the pneumatic cavity 10 and the metering groove 601 is opened on the piston block 1001.

[0061] Furthermore, a rotary joint 901 is connected to the end of the air guide tube 9 away from the pneumatic cavity 10, and the end of the rotary joint 901 away from the air guide tube 9 is connected to the air supply equipment through an air pipe.

[0062] When the rotating block 6 metering groove 601 is vertically downward and directly facing the feed inlet 101 of the mixing cylinder 1, the moving seat 3 moves to the left limit and cannot move further to the left. The elastic telescopic rod 503 connected to the second pull rope 502 is stretched. At this time, air is introduced into the pneumatic chamber 10 through the air supply device. The piston block 1001 moves under force and moves into the metering groove 601. The piston block 1001 pushes the compacted silicon powder in the metering groove 601, causing the tightly structured silicon powder to loosen and fall off. Then, a large amount of air is discharged into the metering groove 601 through the connecting groove 11, blowing the silicon powder in the metering groove 601, so that the silicon powder quickly enters the mixing cylinder 1, completing the single metering feeding of silicon powder, which is conducive to improving work efficiency.

[0063] It should be noted that the rotating joint 901 is designed to allow the air guide pipe 9 to rotate with the rotating block 6, while the air pipe connected to the air supply equipment does not need to rotate. The air supply equipment can be a blower or other equipment that can discharge air into the pneumatic chamber 10. This is existing technology and will not be elaborated on here.

[0064] The present invention also discloses a method of using a silicon powder metering device for inclined belt conveyors, comprising the following steps:

[0065] S1: After the silicon powder is conveyed to the hopper 2 by the inclined belt, the drive motor 401 is controlled to run, so that the drive motor 401 drives the lead screw 402 to rotate clockwise, and the sleeve 403 moves down along the axial direction of the lead screw 402. When the sleeve 403 moves down, it drives the pusher block 405 to move down through the connector 404.

[0066] When the lead screw 402 rotates clockwise, the first pull rope 501 applies a pulling force to the right side of the moving seat 3, causing the moving seat 3 to move to the lower side of the hopper 2. After the moving seat 3 is limited to the right, the elastic telescopic rod 503 connected to the first pull rope 501 is stretched. At this time, the metering groove 601 of the rotating block 6 is placed directly below the discharge port of the hopper 2.

[0067] S2: As the pusher block 405 continues to move downward, the pusher block 405 presses the silicon powder accumulated at the discharge port into the metering tank 601, so that the silicon powder is tightly filled in the metering tank 601.

[0068] S3: Then drive motor 401 to drive screw 402 to rotate counterclockwise, sleeve 403 drives push block 405 to move upward through connector 404, push block 405 away from hopper 2 discharge port;

[0069] The double-wire drum 5 releases the first pull rope 501 and winds the second pull rope 502. When the second pull rope 502 is wound up, it applies a pulling force to the left side of the moving seat 3. The moving seat 3 drives the rotating block 6 to move towards the feed inlet 101 of the mixing drum 1.

[0070] S4: During the displacement of the rotating block 6 with the moving seat 3, the movable gear 701 on the rotating rod 7 meshes with the rack plate 8 for transmission. The movable gear 701 drives the rotating block 6 to rotate through the rotating rod 7, causing the metering groove 601 of the rotating block 6 to flip downward.

[0071] S5: When the metering groove 601 of the rotating block 6 is vertically downward and directly faces the feed inlet 101 of the mixing cylinder 1, the moving seat 3 moves to the left limit and cannot continue to move to the left. The elastic telescopic rod 503 connected to the second pull rope 502 is stretched.

[0072] S6: Then, air is introduced into the pneumatic chamber 10 through the air supply device. The piston block 1001 moves under force and moves into the metering tank 601. The piston block 1001 pushes the compacted silicon powder in the metering tank 601, causing the tightly structured silicon powder to loosen and fall off. Then, a large amount of air is discharged into the metering tank 601 through the connecting tank 11, blowing the silicon powder in the metering tank 601, so that the silicon powder quickly enters the mixing cylinder 1, completing the single metering feeding of silicon powder.

[0073] S7: Repeat steps S1-S6, feeding silicon powder from hopper 2 into mixing cylinder 1 multiple times until the amount of silicon powder in mixing cylinder 1 meets the test requirements.

[0074] The core innovation of this application lies in replacing the traditional dynamic weighing method with volumetric quantitative weighing, fundamentally avoiding the inherent errors of electronic scales in powder measurement. Specifically, this is reflected in the following aspects:

[0075] (1) The fixed and adjustable volume of the metering cell 601 ensures the metering accuracy:

[0076] As per the instruction manual and accompanying documents Figure 7 As shown, the metering tank 601 is a cavity with a fixed volume, and its internal space can be adjusted by driving the adjusting block 603 via the electric push rod 602. This means:

[0077] Before each metering, the volume of the metering tank 601 can be precisely set by adjusting the position of the adjusting block 603, thereby directly controlling the absolute volume of silicon powder contained each time.

[0078] Since the bulk density of silicon powder is stable under certain conditions, the mass of silicon powder corresponding to a fixed volume is highly repeatable, thus achieving indirect and precise control over the quality.

[0079] Unlike electronic scales, which are affected by environmental interference and airflow, volumetric metering is not affected by factors such as sensor drift, powder suspension, or impact, making it more suitable for metering easily dusty materials such as silicon powder.

[0080] (2) The feeding assembly and compaction action ensure consistent filling:

[0081] As per the instruction manual and accompanying documents Figure 3 , 5 As shown, the pusher block 405, driven by the drive motor 401, actively presses silicon powder into the metering trough 601, and through "continuous pressing," ensures that the silicon powder is "tightly filled." This design solves the problem of volume fluctuation caused by loose powder filling, ensures consistent density for each filling, and further improves metering repeatability.

[0082] (3) Auxiliary devices further improve the reliability of measurement:

[0083] The swing rod 122 moves the silicon powder in the hopper through the transmission mechanism to prevent silicon powder from bridging or clumping and to ensure continuous and uniform feeding.

[0084] During unloading, airflow is introduced into the pneumatic chamber 10 and the piston block 1001 to prevent silicon powder from adhering and remaining, and to ensure complete unloading each time.

[0085] This application ensures measurement accuracy through the following process:

[0086] (1) Calibration stage: The volume of the adjustment block 601 is preset, and the silicon powder mass corresponding to the volume is determined by test;

[0087] (2) Batch operation stage: The amount of material added each time is completely consistent through repeated mechanical actions (compaction-transfer-emptying); this "calibration before fixing" method is widely used in powder industry metering, and its accuracy is much higher than that of real-time electronic scales which are affected by various dynamic factors.

[0088] This application effectively solves these defects by combining volumetric metering, mechanical compaction, and airflow purging, achieving the following:

[0089] The measurement method is stable and unaffected by sensor or environmental interference;

[0090] The operation process is repeatable, ensuring consistency in material addition during batch trials.

[0091] The structural design is tailored to the characteristics of silicon powder, avoiding problems such as suspension and adhesion.

[0092] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A silicon powder metering device for an inclined belt, comprising a hopper (2) arranged on the upper side of a mixing drum (1) by means of a support plate, characterized in that, Also include: The mobile seat (3) is slidingly connected between the hopper (2) and the mixing barrel (1), and the mobile seat (3) is provided with a quantitative feeding assembly; The pusher assembly is provided on the hopper (2) and is used to push the silicon powder in the hopper (2) to the quantitative feeding assembly; And the pulling assembly is connected with the pusher assembly, which is used to drive the mobile seat (3) to reciprocate between the hopper (2) and the mixing barrel (1); Wherein, the top of the mixing barrel (1) is provided with a feeding port (101) matched with the quantitative feeding assembly; The quantitative feeding assembly comprises a rotating block (6) rotatably connected in the mobile seat (3), the rotating block (6) is provided with a quantitative groove (601), the quantitative groove (601) is fixedly provided with an electric push rod (602), and the end of the electric push rod (602) is provided with an adjusting block (603); The quantitative feeding assembly further comprises a rotating rod (7) fixedly connected with the rotating block (6), the rotating rod (7) is provided with a torsional spring, the rotating rod (7) is fixedly provided with a movable gear (701), and the top of the mixing barrel (1) is provided with a rack plate (8) engaged with the movable gear (701).

2. A silicon powder metering device for an inclined belt as claimed in claim 1, characterized in that The pusher assembly comprises a mounting plate (4) fixedly provided on the hopper (2), a drive motor (401) fixedly provided on the mounting plate (4), a lead screw (402) rotatably connected with the output shaft of the drive motor (401) and rotatably connected with the mounting plate (4), a sleeve (403) threadedly connected with the lead screw (402), a connecting piece (404) fixedly connected with the sleeve (403), and a pusher block (405) provided at the bottom of the connecting piece (404), the pusher block (405) is slidingly connected in the discharge port of the hopper (2).

3. A silicon powder metering device for an inclined belt as claimed in claim 2, characterized in that The pulling assembly comprises a double-line drum (5) provided on the lead screw (402), and a first pull rope (501) and a second pull rope (502) woundly connected with the double-line drum (5), the ends of the first pull rope (501) and the second pull rope (502) away from the double-line drum (5) are provided with elastic telescopic rods (503), the two elastic telescopic rods (503) are respectively connected with the two ends of the mobile seat (3), the bottom of the mobile seat (3) is fixedly provided with a sliding block (301), and the side edge support plate of the mixing barrel (1) is provided with a sliding groove (302) for sliding of the sliding block (301).

4. A silicon powder metering device for an inclined belt as claimed in claim 3, characterized in that The hopper (2) is connected with a plurality of positioning rings (13) through support rods, and the first pull rope (501) or the second pull rope (502) is slidingly connected with the inner wall of the positioning ring (13).

5. A silicon powder metering device for an inclined belt as claimed in claim 3, characterized in that The bottom of the screw rod (402) is rotationally connected with a connecting shell (12), the two sides of the connecting shell (12) are slidably connected with connecting pieces (404), the side wall of the connecting shell (12) is rotationally connected with a secondary bevel gear (121) through a rotating shaft, the screw rod (402) is provided with a primary bevel gear (4021) engaged with the secondary bevel gear (121), the secondary bevel gear (121) is fixedly provided with a fixed rod (1211), the outer side of the fixed rod (1211) is slidably connected with an oscillating rod (122), the inner wall of the hopper (2) is fixedly provided with a positioning rod (123) rotationally connected with the oscillating rod (122), the oscillating rod (122) is provided with a movable slot (1221) for sliding of the fixed rod (1211).

6. A silicon powder metering device for an inclined belt as claimed in claim 5, characterized in that The rotating rod (7) is provided with a gas guide pipe (9), the rotating block (6) is provided with a pneumatic cavity (10) in communication with the gas guide pipe (9), the pneumatic cavity (10) is slidably connected with a piston block (1001), the piston block (1001) and the inner wall of the pneumatic cavity (10) are provided with an elastic element (1002), the piston block (1001) moves in the quantitative slot (601), and the piston block (1001) is provided with a communication slot (11) for communication between the pneumatic cavity (10) and the quantitative slot (601).

7. A silicon powder metering device for an inclined belt as claimed in claim 6, characterized in that The end of the gas guide pipe (9) away from the pneumatic cavity (10) is connected with a rotating joint (901), and the end of the rotating joint (901) away from the gas guide pipe (9) is connected with a gas supply device through a gas pipe.

8. A method of using a silicon powder metering device for an inclined belt according to claim 7, characterized in that, The method comprises the following steps: S1: After the silicon powder is conveyed to the hopper (2) through the inclined belt, the driving motor (401) is controlled to rotate clockwise, so that the driving motor (401) drives the screw rod (402) to rotate clockwise, the sleeve (403) moves downward along the screw rod (402) in the axial direction, and the sleeve (403) moves downward to drive the pushing block (405) to move downward through the connecting piece (404); When the screw rod (402) rotates clockwise, the first pull rope (501) exerts a pulling force on the right side of the moving seat (3), so that the moving seat (3) moves to the lower side of the hopper (2), and after the right movement of the moving seat (3) is limited, the elastic telescopic rod (503) connected with the first pull rope (501) is stretched, and at this time, the quantitative slot (601) of the rotating block (6) is located directly below the discharge port of the hopper (2); S2: As the pushing block (405) continuously moves downward, the pushing block (405) presses the silicon powder accumulated at the discharge port into the quantitative slot (601), so that the silicon powder is tightly filled in the quantitative slot (601); S3: Then, the driving motor (401) drives the screw rod (402) to rotate counterclockwise, the sleeve (403) drives the pushing block (405) to move upward through the connecting piece (404), and the pushing block (405) moves away from the discharge port of the hopper (2); The double-wire reel (5) releases the first pull rope (501) and winds the second pull rope (502), and when the second pull rope (502) is wound, a pulling force is exerted on the left side of the moving seat (3), so that the moving seat (3) drives the rotating block (6) to move to the feeding port (101) of the mixing cylinder (1). S4: During the displacement of the rotating block (6) with the moving seat (3), the movable gear (701) on the rotating rod (7) meshes with the rack plate (8) to drive the rotating block (6) to rotate through the rotating rod (7), so that the quantitative groove (601) of the rotating block (6) is turned down; S5: When the quantitative groove (601) of the rotating block (6) is vertically downward and directly opposite the feed inlet (101) of the mixing cylinder (1), the moving seat (3) moves to the left limit, and the moving seat (3) cannot continue to move left, and the elastic expansion rod (503) connected with the second pull rope (502) is stretched; S6: Then air is introduced into the pneumatic cavity (10) through the air supply device, the piston block (1001) is forced to move and move into the quantitative groove (601), the piston block (1001) pushes the compacted silicon powder in the quantitative groove (601) to make the compacted silicon powder loose and fall off, then a large amount of air is discharged into the quantitative groove (601) through the communication groove (11), the silicon powder in the quantitative groove (601) is blown to make the silicon powder quickly enter the mixing cylinder (1), and the single quantitative feeding of the silicon powder is completed; S7: Repeat steps S1-S6 to repeatedly feed the silicon powder in the hopper (2) into the mixing cylinder (1) until the amount of silicon powder in the mixing cylinder (1) meets the test requirements.

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