An additive quantitative feeding device and its application in steelmaking with less slag

Abstract

The present invention belongs to the technical field of quantitative feeding of additives, and specifically relates to a quantitative feeding device for additives and its application in less slag smelting of steel. It includes a frame assembly. Above the frame assembly, there is a hoisting assembly. Below the hoisting assembly, there is a cutting assembly. On both sides of the cutting assembly, there are flapping assemblies. Below the cutting assembly, there is a feeding assembly. The frame assembly includes a support frame. Between two facing support frames, there are strengthening frames. Between the other two support frames, there are mounting frames. The hoisting assembly includes a square block. On the circumferential side of the square block, a plurality of connecting blocks are evenly arranged. At the top of the connecting block, a hook groove is provided. This quantitative feeding device for additives is simple to operate, safe and stable, meets the requirements of large-scale feeding, has accurate feeding amount, high feeding efficiency, strong adaptability, and high stability, facilitating operators to accurately and efficiently feed the required additives into the rotary calciner.

Description

Technical Field

[0001] The present invention belongs to the technical field of quantitative dosing of additives, and specifically relates to a device for quantitative dosing of additives and its application in steelmaking with less slag. Background Art

[0002] At present, the deoxidizers used in production mainly include common deoxidizers such as ferromanganese, ferrosilicon, aluminum, and composite deoxidizers such as Al-Mg, Si-Ca-Ba, Si-Al-Fe, Si-Al-Ba-Fe, RE-Al-Fe. Some steel plants also use synthetic slag for deoxidation. After the production of the deoxidizer is completed, a quantitative dosing device is needed to put it into the rotary calciner to improve the calcination effect.

[0003] Chinese invention patent CN106629108A relates to a quantitative dosing device, especially an industrial raw material quantitative dosing device, which includes a bracket, a treatment box, a first pulley, a pulling rope, a second pulley, a contact wheel, a fixing block, a second spring, a lifting rod, a knocking block, a wedge block, a first spring, etc.; the dosing accuracy of this quantitative dosing device is low and the dosing effect is poor.

[0004] Chinese invention patent CN113911762B discloses a chemical material quantitative dosing device convenient for feeding, which includes a main body, and the top of the main body is movably connected with a top cover; the operation difficulty of this dosing device is large and the dosing efficiency is low.

[0005] When the above-mentioned quantitative dosing device realizes the quantitative dosing of additives, the dosing efficiency of additives is low after the bottom of the ton bag is cut, and the dosing continuity of additives is poor, which cannot meet the rapid and efficient dosing requirements of additives.

[0006] At the same time, as the additives inside the ton bag are continuously dosed, the weight and stacking position of the additives inside the ton bag change correspondingly, and the prior art cannot adjust the beating position and beating intensity accordingly, thereby reducing the dosing stability of subsequent additives.

[0007] Moreover, the additives inside the ton bag are prone to accumulate at the opening during the dosing process. At this time, only by beating the two side walls of the ton bag still cannot make the additives blocked at the lower opening drop down, thus reducing the dosing efficiency and dosing quality of additives.

[0008] And as the additives inside the ton bag are continuously and continuously dosed, some additives are likely to adhere to the outer surface of the ton bag and the inner wall of the dosing hopper. And when the dosing of the additives inside the ton bag is completed, the additives are prone to partial caking and adhering to the inner wall of the ton bag. If precise air cleaning cannot be carried out, it will not only reduce the dosing amount of additives, but also contaminate the subsequent additives. Summary of the Invention

[0009] In view of the above problems, the present invention provides an additive quantitative feeding device and its application in steelmaking with less slag.

[0010] To achieve the above object, the present invention provides the following technical solution: An additive quantitative feeding device includes a frame assembly. Above the frame assembly, there is a hoisting assembly. Below the hoisting assembly, there is a cutting assembly. On both sides of the cutting assembly, there are flapping assemblies. Below the cutting assembly, there is a feeding assembly.

[0011] The frame assembly includes support frames. Between two facing support frames, there are strengthening frames. Between the other two support frames, there are mounting frames.

[0012] The hoisting assembly includes a square block. On the peripheral side of the square block, a plurality of connecting blocks are evenly provided. At the top of the connecting block, a hook groove is opened. At the inner bottom of the hook groove, there is a first weight sensor. Below the square block, there is a ton bag.

[0013] The cutting assembly includes a plurality of wedge-shaped cutters.

[0014] The flapping assembly includes two rotating plates. On the top of the rotating plates, a plurality of top grooves are evenly opened. On the facing end faces of the two rotating plates, a plurality of exhaust holes are evenly provided. Inside the top groove, a flapping block is hermetically and slidably connected. At the bottom of the flapping block, there is a bottom groove. On the facing end faces of a plurality of flapping blocks, there are docking holes. At the top of the flapping block, there is an elastic expansion ball.

[0015] The feeding assembly includes a feeding hopper.

[0016] Further, at the top of the support frame, there is a top frame. Between adjacent two support frames and the top frame, there are a plurality of inclined brackets. At the bottom of the support frame, a plurality of fixing pads are evenly provided. Outside the strengthening frame, there is a controller, and the controller electrically controls each electrical component.

[0017] Further, at the bottom of the top frame, there is a slide rail. On the outer surface of the slide rail, an electric hoist is slidably connected. At the lower output end of the electric hoist, there is a lower hook. At the center of the top of the square block, there is a hanging rope, and the hanging rope is matched with the lower hook. On the top of the ton bag, a plurality of hanging rings are evenly provided, and the hanging rings are matched with the hook grooves. The first weight sensor is used to detect the weight value of the dosing agent inside the ton bag.

[0018] Further, a plurality of cross frames are provided between the two reinforcing frames. A limiting block is provided at the top of the cross frame. A vertical plate is provided on one side of the limiting block. The bottom of the vertical plate is fixedly connected to the top of the cross frame. First pneumatic push rods are provided on the opposite sides of the plurality of vertical plates. A follower block is provided at the output end on the other side of the first pneumatic push rod. The top of the follower block is fixedly connected to the bottom of the wedge-shaped cutter. A matching groove is provided at the bottom of the follower block. The inner wall of the matching groove is in sealed sliding connection with the outer surface of the limiting block.

[0019] Further, two rotating shafts are symmetrically provided inside the reinforcing frame. A swing sleeve is movably connected to the outer surface of the rotating shaft. The outer surface of the swing sleeve is fixedly connected to the bottom of the rotating plate. The tops of the two mounting frames are both movably connected to a second pneumatic push rod through a bearing seat. The output end at the top of the second pneumatic push rod is hinged to the side wall of the rotating plate through a movable seat.

[0020] Further, one end of the exhaust hole is communicated with the top groove. The docking hole is communicated with the bottom groove, and the docking hole is matched with a plurality of exhaust holes. The top of the top groove is communicated with the bottom of the bottom groove. An electric telescopic rod is provided at the inner bottom of the top groove. The output end at the top of the electric telescopic rod is fixedly connected to the inner top of the bottom groove. A fan is provided on the opposite sides of the two rotating plates. A communication hole is provided inside the rotating plate. One side of the communication hole is communicated with a plurality of top grooves. The other end of the communication hole is communicated with the output end of the fan.

[0021] Further, two arc-shaped holes are symmetrically opened at the top of the flapping block. The bottom of the arc-shaped hole is communicated with the inside of the bottom groove. A central hole is opened at the central axis of the bottom of the elastic expansion ball. The top of the arc-shaped hole is communicated with the bottom of the central hole. The elastic expansion ball has elastic expansibility. Elastic collision blocks are provided between adjacent two elastic expansion balls. The elastic collision blocks have elasticity.

[0022] Further, two positioning plates are symmetrically provided inside the feeding hopper. A second weight sensor is provided at the top of the positioning plate. The side wall of the feeding hopper is fixedly connected to the inner wall of the support frame. The second weight sensor is used to detect the weight value above the positioning plate. Side grooves are provided on the opposite end faces of the two positioning plates. An electromagnetic switch valve is provided inside the side groove.

[0023] Further, a feeding shell is communicated with the lower part of the feeding hopper through a recovery hole. A bottom plate is provided at the bottom of the feeding shell. A driving motor is provided on one side of the feeding shell. The output end of the driving motor passes through the feeding shell and is provided with a transmission shaft. A spiral auger is provided on the outer surface of the transmission shaft. The outer surface of the spiral auger is matched with the inner wall of the feeding shell.

[0024] The application of the additive quantitative feeding device as described in the steelmaking with less slag smelting includes the following steps:

[0025] S1. The square block hoists the ton bag and moves it above the feeding hopper. When the weight values detected by multiple said first weight sensors reach the set weight preset value, the wedge cutter cuts and tears open the bottom of the ton bag;

[0026] S2. The rotating plate rotates and drives the beating block to rotate. The rotation of the beating block drives the elastic expansion ball to rotate and beat the side wall of the ton bag. At the same time, gas is continuously discharged inside the exhaust hole to exert a wind force on the side wall of the ton bag, causing the side wall of the ton bag to continuously contract and expand at a high frequency and discharge the internal additive;

[0027] S3. When the weight value detected by the first weight sensor on a certain side increases, the beating block moves upward along the top groove, the overlapping area of the docking hole and the exhaust hole increases, the amount of gas discharged from the exhaust hole increases and the extrusion force exerted on the side wall of the ton bag increases. When the rotating plate and the beating block contact the side wall of the ton bag, the beating block moves downward along the top groove to increase, the overlapping area of the docking hole and the exhaust hole decreases, and the expansion size of the elastic expansion ball increases and the collision force exerted on the side wall of the ton bag increases;

[0028] S4. When the feeding is completed, the weight value detected by the first weight sensor is greater than the set minimum weight preset value. The rotating plate and the beating block are inserted into the ton bag along the opening at the lower part of the ton bag. The beating block moves upward along the top groove to the maximum distance, the overlapping area of the docking hole and the exhaust hole reaches the maximum value, and the exhaust hole discharges gas to perform wind cleaning on the inner walls of the ton bag and the feeding hopper.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. In the present invention, the additive quantitative feeding device is simple to operate, safe and stable, meets the requirements of large - batch feeding, has accurate feeding amount, high feeding efficiency, strong adaptability and high stability, and is convenient for operators to accurately and efficiently feed the required additives into the rotary calciner.

[0031] 2. In the present invention, when the additive inside the ton bag is continuously discharged along the lower opening, the rotating plate and the beating block continuously beat the side wall of the ton bag to improve the feeding efficiency and feeding stability.

[0032] 3. In the present invention, as the additive feeding continues, the gas discharged from the exhaust hole continuously exerts an extrusion force on the side wall of the ton bag to achieve high - frequency contraction and expansion of the side wall of the ton bag, thereby improving the feeding efficiency of the additive inside the ton bag.

[0033] 4. In the present invention, after the dosing is completed, the rotating plate enters the inside of the ton bag and discharges gas through the exhaust holes to achieve wind cleaning of the additives adhered to the inner wall of the ton bag. Then the rotating plate continues to rotate to perform wind dosing cleaning on the inner wall of the dosing hopper, thereby improving the dosing effect and thoroughness of the additives, preventing the additives from sticking and affecting the subsequent dosing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 is a three-dimensional structural schematic diagram of another perspective of the present invention;

[0036] Figure 3 is a front internal three-dimensional structural schematic diagram of the present invention;

[0037] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0038] Figure 5 is an exploded three-dimensional structural schematic diagram of the lifting assembly part of the present invention;

[0039] Figure 6 is an exploded three-dimensional structural schematic diagram of the cutting assembly of the present invention;

[0040] Figure 7 is a front internal three-dimensional structural schematic diagram of the cutting assembly and the flapping assembly of the present invention;

[0041] Figure 8 is Figure 7 an enlarged schematic diagram of part B in

[0042] Figure 9 is Figure 7 an enlarged schematic diagram of part C in

[0043] Figure 10 is an exploded three-dimensional structural schematic diagram of the flapping assembly of the present invention.

[0044] In the figure: 1. Frame assembly; 101. Support frame; 102. Top frame; 103. Reinforcing frame; 104. Controller; 105. Fixed pad; 106. Inclined support; 107. Mounting frame; 2. Lifting assembly; 201. Square block; 202. Connecting block; 203. Hook groove; 204. First weight sensor; 205. Hanging rope; 206. Slide rail; 207. Electric hoist; 208. Lower hook; 209. Tonne bag; 210. Hoop; 3. Cutting assembly; 301. Cross frame; 302. Vertical plate; 303. Limit block; 304. First pneumatic push rod; 305. Follow-up block; 306. Matching groove; 307. Wedge-shaped cutter; 4. Beating assembly; 401. Rotating plate; 402. Top groove; 403. Exhaust hole; 404. Beating block; 405. Docking hole; 406. Bottom groove; 407. Electric telescopic rod; 408. Arc hole; 409. Elastic expansion ball; 410. Central hole; 411. Elastic collision block; 412. Communication hole; 413. Fan; 414. Rotating shaft; 415. Swing sleeve; 416. Second pneumatic push rod; 417. Bearing seat; 418. Movable seat; 5. Feeding assembly; 501. Feeding hopper; 502. Positioning plate; 503. Second weight sensor; 504. Side groove; 505. Electromagnetic solenoid valve; 506. Bottom plate; 507. Feeding shell; 508. Recovery hole; 509. Transmission shaft; 510. Screw auger; 511. Driving motor. Detailed implementation manners

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1

[0047] As Figure 1 - Figure 10 shown, the main part and mass ratio of the additive are: 15% ≤ CaO ≤ 30%, 15% ≤ Al2O3 ≤ 30%, TFe ≤ 27%, S < 0.5%, P < 0.5%, H2O ≤ 0.9%, particle size 10 - 50 mm, sum of particle sizes (less than 10 mm and greater than 50 mm) ≤ 8%: melting point < 1330 °C.

[0048] An additive quantitative feeding device includes a frame assembly 1. Above the frame assembly 1, there is a hoisting assembly 2 which is mainly used for hoisting and transferring the ton bag 209. Below the hoisting assembly 2, there is a cutting assembly 3 which cuts the bottom of the ton bag 209 to facilitate subsequent feeding of the additive. On both sides of the cutting assembly 3, there are flapping assemblies 4 which flap both sides of the ton bag 209, thereby improving the thoroughness and stability of the feeding of the additive inside the ton bag 209. Below the cutting assembly 3, there is a feeding assembly 5, and the additive inside the ton bag 209 enters the rotary calciner to assist in steelmaking, further improving the steelmaking efficiency and quality.

[0049] The frame assembly 1 includes a support frame 101. Between two opposite support frames 101, there are strengthening frames 103. The setting of the strengthening frames 103 further improves the support stability of the support frames 101. Between the other two support frames 101, there are mounting frames 107 which facilitate the subsequent hinged support effect on the first pneumatic push rod 304. At the top of the support frame 101, there is a top frame 102. Between adjacent two support frames 101 and the top frame 102, there are multiple inclined brackets 106. The setting of the inclined brackets 106 improves the support stability of the support frames 101 and the top frame 102. At the bottom of the support frame 101, there are multiple fixing pads 105 evenly arranged. The fixing pads 105 are elastic and further improve the buffer and shock absorption effect of the support frame 101. Outside the strengthening frame 103, there is a controller 104 which electrically controls each electrical component.

[0050] The hoisting assembly 2 includes a square block 201 which mainly drives the ton bag 209 for hoisting and transferring. On the peripheral side of the square block 201, there are multiple connecting blocks 202 evenly arranged. The connecting blocks 202 mainly play a role in supporting and connecting. At the top of the connecting block 202, there is a hook groove 203. At the inner bottom of the hook groove 203, there is a first weight sensor 204 which is used to detect the weight value of the additive inside the ton bag 209. The setting of the hook groove 203 improves the hoisting and transferring stability of the ton bag 209.

[0051] The bottom of the top frame 102 is provided with a slide rail 206. The outer surface of the slide rail 206 is slidably connected with a electric hoist 207. The lower output end of the electric hoist 207 is provided with a lower lifting hook 208. Therefore, when the electric hoist 207 starts, it drives the lower lifting hook 208 to move synchronously below the slide rail 206. At the center of the top of the square block 201, a hanging rope 205 is provided. Below the square block 201, there is a ton bag 209. The top of the ton bag 209 is evenly provided with a plurality of lifting rings 210. The setting of the lifting rings 210 further improves the stability of the hoisting and transfer of the ton bag 209. The hanging rope 205 and the lower lifting hook 208 are matched, and the lifting ring 210 and the hook groove 203 are matched. Therefore, by means of the mutual clamping and fixing of the hook groove 203 and the lifting ring 210, the assembly stability and supportability are further improved. At the same time, the movement of the lower lifting hook 208 drives the ton bag 209 below to move synchronously.

[0052] The cutting assembly 3 includes a plurality of wedge-shaped cutters 307. The wedge-shaped cutters 307 cut the bottom of the ton bag 209, so as to improve the downward sliding and feeding of the additives inside the ton bag 209. A plurality of cross frames 301 are arranged between the two reinforcing frames 103. The cross frame 301 is of an X-shaped structure. A limiting block 303 is provided at the top of the cross frame 301. The limiting block 303 is mainly used for limiting and sliding. A vertical plate 302 is provided on one side of the limiting block 303. The bottom of the vertical plate 302 is fixedly connected to the top of the cross frame 301. On the opposite sides of the plurality of vertical plates 302, a first pneumatic push rod 304 is provided. The other output end of the first pneumatic push rod 304 is provided with a follower block 305. When the first pneumatic push rod 304 starts, it drives the follower block 305 to move. The top of the follower block 305 is fixedly connected to the bottom of the wedge-shaped cutter 307. The movement of the follower block 305 drives the wedge-shaped cutter 307 to move synchronously. A matching groove 306 is provided at the bottom of the follower block 305. The inner wall of the matching groove 306 is hermetically slidably connected to the outer surface of the limiting block 303. The matching groove 306 is matched with the limiting block 303 and further improves the movement stability and synchronism of the follower block 305 along the upper part of the limiting block 303.

[0053] The flapping assembly 4 includes two rotating plates 401. The rotation of the rotating plates 401 realizes the flapping and feeding of the side walls of the ton bag 209. Two rotating shafts 414 are symmetrically arranged inside the reinforcing frame 103. A swinging sleeve 415 is movably connected to the outer surface of the rotating shaft 414. The outer surface of the swinging sleeve 415 is fixedly connected to the bottom of the rotating plate 401. The rotating plate 401 rotates on the outer surface of the rotating shaft 414 by means of the swinging sleeve 415, further realizing the flapping stability of the rotating plate 401. The tops of the two mounting frames 107 are both movably connected with a second pneumatic push rod 416 through a bearing seat 417. The top output end of the second pneumatic push rod 416 is hinged to the side wall of the rotating plate 401 through a movable seat 418. When the second pneumatic push rod 416 starts, its output end drives the rotating plate 401 to swing reciprocally around the rotating shaft 414 and realizes the flapping and feeding of the lower parts of the two side walls of the ton bag 209.

[0054] A plurality of top grooves 402 are evenly formed in the top of the rotating plate 401. A beating block 404 is hermetically and slidably connected inside the top groove 402. The beating block 404 moves up and down inside the top groove 402 to adjust the beating position, so as to ensure the continuous and stable feeding of the additive inside the ton bag 209. A bottom groove 406 is provided at the bottom of the beating block 404, and an elastic expansion ball 409 is provided at the top of the beating block 404. The elastic expansion ball 409 expands and correspondingly adjusts the knocking and feeding stability of the additive inside the ton bag 209.

[0055] A plurality of exhaust holes 403 are evenly provided on the facing end faces of the two rotating plates 401. One end of the exhaust hole 403 is communicated with the top groove 402. The gas inside the top groove 402 can be continuously and stably discharged along the exhaust hole 403. Docking holes 405 are provided on the facing end faces of the plurality of beating blocks 404. The docking holes 405 are communicated with the bottom groove 406. The gas inside the bottom groove 406 can be continuously and stably discharged along the inside of the docking holes 405. And the docking holes 405 are matched with the plurality of exhaust holes 403. The top of the top groove 402 is communicated with the bottom of the bottom groove 406. The gas inside the top groove 402 enters the bottom groove 406 and is discharged outward along the overlapping position of the docking holes 405 and the exhaust holes 403 inside the bottom groove 406, so as to realize the wind cleaning of the outer surface of the ton bag 209 and the inside of the feeding hopper 501 and continuously maintain the continuous and stable feeding at the cut position below the ton bag 209.

[0056] An electric telescopic rod 407 is provided at the inner bottom of the top groove 402. The top output end of the electric telescopic rod 407 is fixedly connected to the inner top of the bottom groove 406. The electric telescopic rod 407 is started to drive the beating block 404 to move up and down inside the top groove 402, so as to adjust the overlapping area of the docking holes 405 and the exhaust holes 403 and the amount of gas discharged outward. A blower 413 is provided on the back side of the two rotating plates 401 facing away from each other. A communication hole 412 is provided inside the rotating plate 401. One side of the communication hole 412 is communicated with the plurality of top grooves 402, and the other end of the communication hole 412 is communicated with the output end of the blower 413. The controller 104 controls the blower 413 to start and introduce gas into the plurality of top grooves 402 along the communication hole 412, and the gas continues to flow upward along the bottom groove 406 to achieve the subsequent beating and cleaning effects.

[0057] Two arc-shaped holes 408 are symmetrically opened at the top of the flapping block 404. The bottom of the arc-shaped hole 408 is connected to the inside of the bottom groove 406. Then, the gas inside the bottom groove 406 can continue to flow upward along the arc-shaped hole 408. A central hole 410 is opened at the bottom central axis of the elastic expansion ball 409. The top of the arc-shaped hole 408 is connected to the bottom of the central hole 410. The gas inside the arc-shaped hole 408 continues to expand into the elastic expansion ball 409 along the central hole 410. The elastic expansion ball 409 has elastic expansibility. When the amount of gas inside the elastic expansion ball 409 changes, it correspondingly drives its own size to change elastically. Elastic collision blocks 411 are provided between adjacent two elastic expansion balls 409. The elastic collision blocks 411 have elasticity. When the elastic expansion ball 409 expands, it synchronously drives the position of the elastic collision block 411 to change, thereby adjusting the collision position of the elastic collision block 411 on the outer surface of the ton bag 209, so as to improve the continuity and accuracy of the feeding of the additive inside the ton bag 209.

[0058] The feeding assembly 5 includes a feeding hopper 501. The additive is continuously fed downward along the feeding hopper 501. Two positioning plates 502 are symmetrically arranged inside the feeding hopper 501. The positioning plates 502 support the additive inside the feeding hopper 501, so as to achieve subsequent accurate feeding. A second weight sensor 503 is arranged on the top of the positioning plate 502. The second weight sensor 503 is used to detect the weight value above the positioning plate 502.

[0059] The side wall of the feeding hopper 501 is fixedly connected to the inner wall of the support frame 101. With the help of the support stability of the support frame 101 for the feeding hopper 501, side grooves 504 are provided on the end faces of the two positioning plates 502 facing each other. An electromagnetic switching valve 505 is arranged inside the side grooves 504. The electromagnetic switching valve 505 thus realizes the continuous and accurate feeding of the additive above the positioning plate 502.

[0060] A feeding shell 507 is connected below the feeding hopper 501 through a recovery hole 508. Then, the additive inside the feeding hopper 501 enters the inside of the feeding shell 507 along the recovery hole 508. A bottom plate 506 is arranged at the bottom of the feeding shell 507. The arrangement of the bottom plate 506 further improves the support stability of the feeding shell 507. A driving motor 511 is arranged on one side of the feeding shell 507. The output end of the driving motor 511 passes through the feeding shell 507 and is provided with a transmission shaft 509. A spiral auger 510 is arranged on the outer surface of the transmission shaft 509. The outer surface of the spiral auger 510 matches the inner wall of the feeding shell 507. Then, the controller 104 controls the driving motor 511 to start and drives the transmission shaft 509 to rotate. The transmission shaft 509 drives the spiral auger 510 to rotate inside the feeding shell 507 and drives the additive inside to be spirally conveyed backward, so that the additive inside the feeding shell 507 continuously and effectively enters the rotating calcination furnace, thereby helping the continuous and stable steelmaking inside the rotating calcination furnace.

[0061] When actually carrying out quantitative feeding of the additive, the cutting of the bottom of the ton bag 209 has low feeding efficiency and poor feeding continuity, and cannot meet the requirements of fast and efficient feeding. At the same time, as the additive inside the ton bag 209 is continuously fed, the weight and stacking position of the additive inside the ton bag 209 change correspondingly. However, the prior art cannot correspondingly adjust the beating position and beating intensity on both sides of the ton bag 209, thereby reducing the feeding stability of the subsequent additive. When an opening is formed by cutting below the ton bag 209 and the additive is continuously fed, the additive inside the ton bag 209 is likely to accumulate at the lower opening. At this time, only relying on the rotating plate 401 and the beating block 404 to beat the two side walls of the ton bag 209 still cannot make the blocked additive at the opening drop downward, thus reducing the feeding efficiency and feeding quality of the additive. Moreover, as the additive inside the ton bag 209 is continuously fed, some additives are likely to adhere to the outer surface of the ton bag 209 and the inner wall of the feeding hopper 501. And when the feeding of the additive inside the ton bag 209 is completed, some additives are likely to adhere and caking on the inner wall of the ton bag 209. If precise air cleaning cannot be carried out on it, it will not only reduce the feeding amount of the additive, but also contaminate the subsequent additive.

[0062] To solve the above problems, when the additive quantitative feeding device is actually in use, a certain amount of additive is contained inside the ton bag 209. The controller 104 controls the electric hoist 207 to start and move along the slide rail 206 to the upper part of the ton bag 209. The electric hoist 207 drives the lower hook 208 to move synchronously to the upper part of the ton bag 209 and move downward to a suitable height. At the same time, a plurality of lifting rings 210 are hung with the hook grooves 203. The controller 104 controls the electric hoist 207 to start again and drive the ton bag 209 to move upward to a suitable feeding height. When the weight values detected by a plurality of first weight sensors 204 all reach the set weight preset value, then the controller 104 controls the electric hoist 207 to drive the ton bag 209 to move to the upper part of the wedge-shaped cutter 307 and then continue to move downward to a certain height. The wedge-shaped cutter 307 pierces the bottom of the ton bag 209. At the same time, the controller 104 controls a plurality of first pneumatic push rods 304 to start and drive the follower block 305 to move along the limiting block 303 in a direction away from each other. The follower block 305 drives the wedge-shaped cutter 307 to move and cut open the bottom of the ton bag 209 to form an opening, thereby enabling the additive inside the ton bag 209 to be continuously and stably fed along the lower opening.

[0063] Meanwhile, the controller 104 controls the second pneumatic push rod 416 to start, and the output end drives the rotating plate 401 to reciprocally swing around the rotating shaft 414 through the swing sleeve 415. The electric telescopic rod 407 drives the beating block 404 to move upward to the initial distance. The rotating plate 401 drives the beating block 404 to swing synchronously and beat the outer surface of the ton bag 209. At the same time, the beating block 404 drives the elastic expansion ball 409 and the elastic collision block 411 at the top to reciprocally swing and knock and collide with both sides of the ton bag 209, further improving the continuity and stability of the feeding of the additive inside the ton bag 209 along the lower opening.

[0064] And the controller 104 controls the fan 413 to start, and the output end passes gas into the communication hole 412. The gas inside the communication hole 412 enters the bottom groove 406 along the top groove 402, and the gas inside the bottom groove 406 is discharged to both sides of the ton bag 209 along the docking hole 405 and the exhaust hole 403. It not only realizes the wind cleaning of the outer surface of the ton bag 209, but also can realize the wind pulse extrusion of the side wall of the ton bag 209 by means of the change of the size and direction of the gas discharged from the exhaust hole 403, so as to ensure the feeding of the additive inside the ton bag 209 along the lower opening and avoid the blockage of the lower opening of the ton bag 209 and affect the feeding efficiency.

[0065] Specifically, when the rotating plate 401 drives the exhaust hole 403 to rotate towards the side wall of the ton bag 209, the distance between the exhaust hole 403 and the side wall of the ton bag 209 decreases, so the gas extrusion force exerted by the gas discharged from the exhaust hole 403 on the side wall of the ton bag 209 increases, thereby improving the extrusion feeding efficiency of the additive inside the ton bag 209. At the same time, the rotation of the rotating plate 401 also drives the relative position between the exhaust hole 403 and the side wall of the ton bag 209 to change. The gas discharged from the exhaust hole 403 continuously slides down along the side wall of the ton bag 209, thereby improving the wind pulse pushing feeding effect on the lower opening of the ton bag 209 and avoiding the blockage of the lower opening of the ton bag 209 by the additive and affecting the feeding efficiency.

[0066] Furthermore, due to the blocking effect of the side wall of the ton bag 209 on the exhaust hole 403, as the rotating plate 401 drives the exhaust hole 403 to rotate towards the side wall of the ton bag 209, the amount of gas discharged from the exhaust hole 403 correspondingly decreases. The excess gas inside the bottom groove 406 enters the elastic expansion ball 409 upward along the arc hole 408 and the central hole 410. The volume of the elastic expansion ball 409 increases and drives the elastic collision block 411 to move towards the side wall of the ton bag 209. When the rotating plate 401 drives the beating block 404 to collide with the side wall of the ton bag 209, the beating block 404 synchronously drives the elastic expansion ball 409 and the elastic collision block 411 to rotate and collide with the side wall of the ton bag 209, further improving the collision feeding effect on the additive inside the ton bag 209 and realizing the vibration beating feeding of the ton bag 209.

[0067] After that, the controller 104 controls the output end of the second pneumatic push rod 416 to shorten and drives the rotating plate 401 to rotate away from the end of the ton bag 209. The rotating plate 401 synchronously drives the beating block 404 and the elastic expansion ball 409 to rotate in the reverse direction. The rotating plate 401, the beating block 404 and the elastic collision block 411 are disengaged from the state of colliding and squeezing the side wall of the ton bag 209. At the same time, when the rotating plate 401 rotates in the reverse direction, it synchronously drives a plurality of exhaust holes 403 to rotate in the reverse direction and disengage from the state of facing the lower opening of the ton bag 209, and blows and squeezes the other positions of the side wall of the ton bag 209, thereby improving the pulse cleaning and squeezing effect of the exhaust holes 403, ensuring that the additives inside the ton bag 209 can all achieve high-frequency contraction and expansion, and thus improving the feeding efficiency of the additives inside the ton bag 209.

[0068] As the additives inside the ton bag 209 are continuously fed along the lower opening, the amount of additives inside the ton bag 209 continuously decreases and the feeding efficiency along the lower opening continuously decreases. The weight values detected by a plurality of first weight sensors 204 continuously decrease, and the weight value detected by the second weight sensor 503 inside the feeding hopper 501 continuously increases. The controller 104 controls the electric telescopic rod 407 to start and the output end shortens. The electric telescopic rod 407 drives the beating block 404 to move downward along the top groove 402. The beating block 404 drives the docking hole 405 to move downward and the overlapping area between the docking hole 405 and the plurality of exhaust holes 403 decreases. The amount of gas discharged from the bottom groove 406 along the docking hole 405 and the exhaust holes 403 decreases, thereby ensuring that the gas discharged from the exhaust holes 403 can continuously and stably apply a wind pulse squeezing force to the side wall of the ton bag 209, and avoiding that the amount of gas discharged from the exhaust holes 403 is too large, causing the ton bag 209 and the internal additives to swing too much and affecting the feeding accuracy of the internal additives.

[0069] At the same time, when the discharge efficiency of the gas inside the bottom groove 406 along the docking hole 405 and the plurality of exhaust holes 403 decreases, and the fan 413 passes the same amount of gas into the top groove 402 and the bottom groove 406 through the communication hole 412, the excess gas inside the bottom groove 406 enters the elastic expansion ball 409 upward along the arc hole 408 and the central hole 410. The volume of the elastic expansion ball 409 increases and drives the elastic collision block 411 to move toward the side wall end of the ton bag 209. Therefore, when the rotating plate 401 drives the elastic expansion ball 409 and the elastic collision block 411 to rotate through the beating block 404, the squeezing and collision force applied by the elastic collision block 411 to the side wall of the ton bag 209 is further increased, thereby improving the vibration feeding degree of the additives inside the ton bag 209, ensuring the continuity and stability of the feeding of the additives inside the ton bag 209 along the lower opening, and at the same time, it can also be realized that the elastic expansion ball 409 and the elastic collision block 411 increase as the additives inside the ton bag 209 decrease, further improving the tight knocking and collision feeding effect of the elastic expansion ball 409 and the elastic collision block 411 on the additives inside the ton bag 209.

[0070] When the weight value detected by a certain first weight sensor 204 is greater than the weight values detected by the first weight sensors 204 at other positions, it indicates that the additive feeding rate inside the ton bag 209 at this position is slow and the stable feeding of the additive inside the ton bag 209 cannot be achieved. The controller 104 controls the electric telescopic rod 407 at the corresponding position to start and the output end extends. Then, the electric telescopic rod 407 drives the flapping block 404 and the docking hole 405 to move upward along the top groove 402. The overlapping area between the docking hole 405 and the plurality of exhaust holes 403 increases, and the amount of gas discharged from the bottom groove 406 to the outside along the docking hole 405 and the exhaust holes 403 increases. The gas extrusion force exerted by the gas on the side wall of the ton bag 209 increases, further ensuring that the discharge efficiency of the ton bag 209 at this position through the lower opening increases.

[0071] When the rotating plate 401 drives the flapping block 404 to rotate to the side wall of the ton bag 209, the controller 104 controls the electric telescopic rod 407 to drive the flapping block 404 to move downward along the top groove 402 by a greater distance. Then, the flapping block 404 drives the docking hole 405 to move downward, and the overlapping area between the docking hole 405 and the plurality of exhaust holes 403 further decreases. The fan 413 starts and the gas introduced into the top groove 402 through the communication hole 412 further moves upward along the bottom groove 406, the arc-shaped hole 408, and the central hole 410 into the elastic expansion ball 409. The expansion volume of the elastic expansion ball 409 is greater than that at the other positions. Then, the elastic expansion ball 409 further drives the elastic collision block 411 to move towards the side wall end of the ton bag 209. The knocking and collision extrusion force exerted by the elastic collision block 411 on the side wall of the ton bag 209 correspondingly increases, so as to ensure that the feeding rate of the additive inside the ton bag 209 at this accumulation position through the lower opening increases, realizing the continuous and stable feeding of the additive inside the ton bag 209. After adjusting the positions of the flapping blocks 404 multiple times, the weight values detected by the plurality of first weight sensors 204 are equal and equal to the weight preset value at the set position, and the above process is repeated to continuously and stably feed the additive inside the ton bag 209.

[0072] When all the additives inside the ton bag 209 are discharged through the lower opening, the weight value detected by the first weight sensor 204 continuously decreases to the set minimum weight value, and the weight value detected by the second weight sensor 503 continuously increases to the set maximum weight value. However, if some additives still adhere to the inner wall of the ton bag 209, the weight value detected by the first weight sensor 204 is greater than the set minimum weight value, and the weight value detected by the second weight sensor 503 is less than the set maximum weight value. The controller 104 controls the electric hoist 207 to start and drive the ton bag 209 to move upward to the maximum value. The second pneumatic push rod 416 drives the rotating plate 401 to rotate towards the ton bag 209 end to the maximum value, and multiple elastic expansion balls 409 on both sides come into contact with each other. Then, the controller 104 controls the electric hoist 207 to move downward and drive the ton bag 209 to move downward. The rotating plate 401 is inserted into the ton bag 209 through the lower opening of the ton bag 209. At the same time, the controller 104 controls multiple electric telescopic rods 407 to start and drive the beating block 404 to move upward to the maximum distance. The overlapping area of the docking hole 405 and multiple exhaust holes 403 reaches the maximum value. At this time, the fan 413 starts and injects gas into the bottom groove 406 along the communication hole 412 and the top groove 402. The gas inside the bottom groove 406 is discharged through the docking hole 405 and the exhaust holes 403 to thoroughly and effectively clean the inner wall of the ton bag 209 by wind. At the same time, in cooperation with the second pneumatic push rod 416 driving the rotating plate 401 to swing back and forth continuously, the rotating plate 401 drives multiple exhaust holes 403 to swing continuously and change the wind cleaning position of the inner wall of the ton bag 209, ensuring that the additives adhering to the inner wall of the ton bag 209 can be continuously and stably discharged downward.

[0073] When the weight value detected by the first weight sensor 204 is equal to the set minimum weight value, and the weight value detected by the second weight sensor 503 is less than the set maximum weight value, it indicates that some additives adhere to the upper part of the cross frame 301 and the inner wall of the feeding hopper 501. Then, the controller 104 controls the electric hoist 207 to start and drive the ton bag 209 to move away from the upper part of the feeding hopper 501. At the same time, the second pneumatic push rod 416 synchronously drives the rotating plate 401 to continue swinging back and forth. The rotating plate 401 drives multiple exhaust holes 403 to swing back and forth to clean the outer surface of the cross frame 301 and the inner wall of the feeding hopper 501 by wind, preventing additives from adhering to them and affecting the feeding accuracy of the additives.

[0074] After the additives inside the bulk bag 209 are completely dispensed, when the weight value detected by the second weight sensor 503 reaches the set maximum weight preset value, it indicates that the additives inside the dosing hopper 501 have been completely dispensed. At the same time, when it is necessary to accurately dispense the additives inside the dosing hopper 501 into the rotary calciner, the feed housing 507 is connected to the opening of the rotary calciner. Meanwhile, the controller 104 controls the electromagnetic switching valve 505 to open, and the additives inside the dosing hopper 501 enter the inside of the feed housing 507 along the recovery hole 508. The controller 104 controls the driving motor 511 to start and drive the rotating shaft 414 to rotate. The rotating shaft 414 drives the spiral auger 510 to rotate and accurately dispense the additives inside the feed housing 507 into the rotary calciner. When the decrease in the weight value detected by the second weight sensor 503 meets the requirements, the controller 104 controls the electromagnetic switching valve 505 to close, and the additives inside the dosing hopper 501 no longer enter the inside of the feed housing 507 along the recovery hole 508. After all the additives inside the feed housing 507 are dispensed into the rotary calciner, the dispensing is completed.

[0075] After that, the above process is continuously repeated to accurately dispense the additives inside the subsequent bulk bags 209 and dosing hoppers 501, improving the subsequent steelmaking effect and steelmaking quality.

[0076] This additive metering and dispensing device is easy to operate, safe and stable, meets the requirements of large - batch dispensing, has accurate dispensing quantity, high dispensing efficiency, strong adaptability and high stability, facilitating the operator to accurately and efficiently dispense the required additives into the rotary calciner. At the same time, when the additives inside the bulk bag 209 are continuously dispensed along the lower opening, the rotating plate 401 and the flapping block 404 continuously flap the side wall of the bulk bag 209, improving the dispensing efficiency and dispensing stability. And as the dispensing of additives continues, the gas discharged from the exhaust hole 403 continuously exerts an extrusion force on the side wall of the bulk bag 209, realizing high - frequency contraction and expansion of the side wall of the bulk bag 209, thereby improving the dispensing efficiency of the additives inside the bulk bag 209. When the dispensing is completed, the rotating plate 401 enters the inside of the bulk bag 209 and discharges gas through the exhaust hole 403 to clean the additives adhering to the inner wall of the bulk bag 209 by wind force. And the rotating plate 401 continues to rotate to clean the inner wall of the dosing hopper 501 by wind force, thus improving the dispensing effect and thoroughness of the additives, avoiding the adhesion of additives and affecting the subsequent dispensing effect.

[0077] Embodiment 2

[0078] The application of the additive metering and dispensing device in the steelmaking process with less slag includes the following steps:

[0079] S1. The square block 201 hoists the bulk bag 209 and moves it above the dosing hopper 501. When the weight values detected by multiple first weight sensors 204 reach the set weight preset value, the wedge - shaped cutter 307 cuts and opens the bottom of the bulk bag 209.

[0080] S2. The rotating plate 401 rotates and drives the beating block 404 to rotate. The rotation of the beating block 404 drives the elastic expansion ball 409 to rotate and beat the side wall of the ton bag 209. At the same time, gas is continuously discharged from the exhaust hole 403 to exert a wind force on the side wall of the ton bag 209, causing the side wall of the ton bag 209 to continuously contract and expand at a high frequency and release the internal additive.

[0081] S3. When the weight value detected by the first weight sensor 204 on a certain side increases, the beating block 404 moves upward along the top groove 402, and the overlapping area between the docking hole 405 and the exhaust hole 403 increases. The amount of gas discharged from the exhaust hole 403 increases, and the extrusion force exerted on the side wall of the ton bag 209 increases. When the rotating plate 401 and the beating block 404 come into contact with the side wall of the ton bag 209, the beating block 404 moves downward along the top groove 402 to increase, the overlapping area between the docking hole 405 and the exhaust hole 403 decreases, and the expansion size of the elastic expansion ball 409 increases, and the collision force exerted on the side wall of the ton bag 209 increases.

[0082] S4. When the feeding is completed and the weight value detected by the first weight sensor 204 is greater than the set minimum weight preset value, the rotating plate 401 and the beating block 404 are inserted into the ton bag 209 along the lower opening of the ton bag 209. The beating block 404 moves upward along the top groove 402 to the maximum distance, the overlapping area between the docking hole 405 and the exhaust hole 403 reaches the maximum value, and the exhaust hole 403 discharges gas to perform wind cleaning on the inner walls of the ton bag 209 and the feeding hopper 501.

[0083] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0084] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quantitative additive dosing device, comprising a frame assembly (1), characterized in that: A hanging assembly (2) is provided above the frame assembly (1), a cutting assembly (3) is provided below the hanging assembly (2), beating assemblies (4) are provided on both sides of the cutting assembly (3), and a dropping assembly (5) is provided below the cutting assembly (3); The frame assembly (1) comprises a support frame (101), a reinforcement frame (103) is provided between two facing support frames (101), and a mounting frame (107) is provided between another two support frames (101); The lifting assembly (2) comprises a square block (201), a plurality of connection blocks (202) are evenly arranged on the peripheral side of the square block (201), a hook groove (203) is opened on the top of the connection block (202), a first weight sensor (204) is arranged at the inner bottom of the hook groove (203), and a ton bag (209) is arranged below the square block (201); The cutting assembly (3) comprises a plurality of wedge-shaped cutters (307); The flapping assembly (4) comprises two rotating plates (401), the top of the rotating plates (401) is evenly provided with a plurality of top grooves (402), the facing end surfaces of the two rotating plates (401) are evenly provided with a plurality of exhaust holes (403), the inside of the top grooves (402) is sealingly and slidably connected with a flapping block (404), the bottom of the flapping block (404) is provided with a bottom groove (406), the facing end surfaces of the plurality of flapping blocks (404) are all provided with docking holes (405), and the top of the flapping block (404) is provided with an elastic expansion ball (409); The delivery component (5) comprises a delivery bucket (501); One end of the exhaust hole (403) is connected to the top groove (402), the docking hole (405) is connected to the bottom groove (406), and the docking hole (405) matches the plurality of exhaust holes (403), the top of the top groove (402) is connected to the bottom of the bottom groove (406), an electric telescopic rod (407) is provided at the inner bottom of the top groove (402), and the top output end of the electric telescopic rod (407) is fixedly connected to the inner top of the bottom groove (406), a fan (413) is provided on the two rotating plates (401) facing away from each other, and a connecting hole (412) is provided inside the rotating plate (401), one side of the connecting hole (412) is connected to the plurality of top grooves (402), and the other end of the connecting hole (412) is connected to the output end of the fan (413).

2. The additive quantitative dosing device according to claim 1, characterized in that: A top frame (102) is provided on the top of the support frame (101), a plurality of inclined frames (106) are provided between two adjacent support frames (101) and the top frame (102), a plurality of fixing pads (105) are evenly provided on the bottom of the support frame (101), and a controller (104) is provided on the outside of the reinforcement frame (103), and the controller (104) electrically controls each electrical component.

3. The additive quantitative dosing device according to claim 2, characterized in that: A slide rail (206) is provided at the bottom of the top frame (102), an electric hoist (207) is slidably connected to the outer surface of the slide rail (206), a lower hook (208) is provided at the lower output end of the electric hoist (207), a hanging rope (205) is provided at the top axis of the square block (201), the hanging rope (205) and the lower hook (208) match, a plurality of lifting rings (210) are evenly provided on the top of the ton bag (209), the lifting rings (210) match the hook grooves (203), and the first weight sensor (204) is used to detect the weight value of the agent inside the ton bag (209).

4. The additive quantitative dosing device according to claim 1, characterized in that: A plurality of cross frames (301) are provided between the two reinforcing frames (103), a limit block (303) is provided at the top of the cross frame (301), a vertical plate (302) is provided on one side of the limit block (303), the bottom of the vertical plate (302) is fixedly connected to the top of the cross frame (301), a first pneumatic push rod (304) is provided on the side facing each other of the plurality of vertical plates (302), a follower block (305) is provided at the output end on the other side of the first pneumatic push rod (304), the top of the follower block (305) is fixedly connected to the bottom of the wedge cutter (307), a matching groove (306) is provided at the bottom of the follower block (305), and the inner wall of the matching groove (306) is sealingly and slidably connected to the outer surface of the limit block (303).

5. The additive quantitative dosing device according to claim 1, characterized in that: Two rotating shafts (414) are symmetrically arranged inside the reinforcing frame (103); the outer surface of the rotating shaft (414) is movably connected to a swing sleeve (415); the outer surface of the swing sleeve (415) is fixedly connected to the bottom of the rotating plate (401); the tops of the two mounting frames (107) are movably connected to a second pneumatic push rod (416) via a bearing seat (417); the top output end of the second pneumatic push rod (416) is hinged to the side wall of the rotating plate (401) via a movable seat (418).

6. The additive quantitative dosing device according to claim 1, characterized in that: The top of the beating block (404) is symmetrically provided with two arc-shaped holes (408), the bottom of the arc-shaped holes (408) is connected to the inside of the bottom groove (406), a center hole (410) is provided at the bottom center axis of the elastic expansion ball (409), the top of the arc-shaped hole (408) is connected to the bottom of the center hole (410), the elastic expansion ball (409) has elastic expansion properties, and an elastic collision block (411) is provided between two adjacent elastic expansion balls (409), and the elastic collision block (411) has elasticity.

7. The additive quantitative dosing device according to claim 1, characterized in that: Two positioning plates (502) are symmetrically arranged inside the delivery bucket (501), a second weight sensor (503) is arranged on the top of the positioning plate (502), a side wall of the delivery bucket (501) is fixedly connected to the inner wall of the support frame (101), the second weight sensor (503) is used to detect the weight value above the positioning plate (502), and side grooves (504) are arranged on the facing end surfaces of the two positioning plates (502), and an electromagnetic switch valve (505) is arranged inside the side groove (504).

8. The additive quantitative dosing device according to claim 1, characterized in that: A feeding shell (507) is connected to the bottom of the delivery hopper (501) through a recovery hole (508); a bottom plate (506) is provided at the bottom of the feeding shell (507); a driving motor (511) is provided on one side of the feeding shell (507); an output end of the driving motor (511) passes through the feeding shell (507) and is provided with a transmission shaft (509); a spiral auger (510) is provided on the outer surface of the transmission shaft (509); and the outer surface of the spiral auger (510) matches the inner wall of the feeding shell (507).

9. The use of the additive quantitative dosing device as claimed in claim 1 in steel smelting with less slag, characterized in that: The following steps are involved: S1, the square block (201) hoists the ton bag (209) and moves it above the delivery bucket (501), the plurality of first weight sensors (204) detect that the weight value reaches the preset weight value, and the wedge-shaped cutter (307) cuts the bottom of the ton bag (209); S2, the rotating plate (401) rotates and drives the beating block (404) to rotate, and the beating block (404) rotates and drives the elastic expansion ball (409) to rotate and beat the side wall of the ton bag (209), and at the same time, the exhaust hole (403) continuously discharges gas to exert wind force on the side wall of the ton bag (209), so that the side wall of the ton bag (209) continuously contracts and expands at a high frequency and releases internal additives; S3, when the weight value detected by the first weight sensor (204) on a certain side increases, the slapping block (404) moves upward along the top groove (402), the overlapping area between the docking hole (405) and the exhaust hole (403) increases, the amount of gas discharged from the exhaust hole (403) increases, and the extrusion force applied to the side wall of the ton bag (209) increases; when the rotating plate (401) and the slapping block (404) contact the side wall of the ton bag (209), the slapping block (404) moves downward along the top groove (402) and increases, the overlapping area between the docking hole (405) and the exhaust hole (403) decreases, the expansion size of the elastic expansion ball (409) increases, and the collision force applied to the side wall of the ton bag (209) increases; S4. When the delivery is completed, the weight value detected by the first weight sensor (204) is greater than the preset minimum weight value, the rotating plate (401) and the beating block (404) are inserted into the ton bag (209) along the lower opening of the ton bag (209), the beating block (404) moves upward along the top groove (402) to a maximum distance, the overlapping area of ​​the docking hole (405) and the exhaust hole (403) reaches a maximum value, and the exhaust hole (403) exhausts gas and performs wind cleaning on the ton bag (209) and the inner wall of the delivery bucket (501).

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