Automatic feeding method and device for feeding dry material in tundish

Abstract

The present invention discloses an automatic feeding method and an automatic feeding device for dry materials in a tundish. The automatic feeding device is used to feed the dry materials into the tundish body. The steps include replenishing the dry materials, screening the dry materials, conveying the dry materials, applying the dry materials, and cleaning impurities and packaging bag debris. The present invention places the bagged dry materials directly in the silo, breaks the wall of the dry materials with a cutter assembly, scatters the materials, and screens and conveys them through a screening mechanism and a feeding mechanism. The homogeneous pure materials are conveyed to the inside of the discharge channel. The speed and flow of the powder materials are controlled by a feed tube and a spiral auger, and the motor vehicle is controlled to move along a circular track so that the output end of the conveying hose moves along the application area of ​​the tundish body to uniformly apply the materials, thereby achieving precise operation control, improving the uniformity of the materials applied in the tundish, and collecting the dust generated during the application process. The feeding process is more efficient, saves time and labor, and significantly improves safety.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, in particular to an automatic feeding method and an automatic feeding device for dry materials in a tundish. Background Art

[0002] Tundishes used in steelmaking and continuous casting typically come in two types: dry-feed tundishes and spray-coated tundishes. Dry-feed tundishes offer excellent stability and a long service life. Dry-feed tundishes are typically loaded manually, which produces a lot of dust, is inconvenient to carry, and is labor-intensive. Automatic loading devices can reduce manual labor and dust generation, facilitating on-site operation.

[0003] The automatic feeding device in the existing technology usually requires manual work to pour the bagged dry material onto the transmission mechanism, and then use the feeding mechanism to transport it to the tundish. The material is applied unevenly, affecting the processing quality of the tundish. In addition, the process requires manual and continuous small amounts of feeding, which is time-consuming and labor-intensive, and the packaging bags need to be removed frequently, resulting in low work efficiency and safety hazards.

[0004] Therefore, it is necessary to develop an automatic feeding method and an automatic feeding device for dry materials in a tundish. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and to provide an automatic feeding method and an automatic feeding device for dry materials in a tundish. The method places the bagged dry materials directly in the silo, breaks the wall with a cutter assembly, scatters the materials, and screens and transmits them through a screening mechanism and a discharge mechanism. The homogeneous pure materials are transmitted to the inside of the discharge channel, and the speed and flow of the powder materials are controlled by a feed tube and a spiral auger. The motor vehicle is controlled to move along the circular track so that the output end of the conveying hose moves along the application area of ​​the tundish body to evenly apply the materials, thereby achieving precise operation control to solve the problems raised in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A method for automatically feeding dry material into a tundish using an automatic feeding device. The automatic feeding device includes a bracket mounted on a driving vehicle. A silo is mounted on top of the bracket. The silo is provided with a feeding mechanism, a screening mechanism, and a discharge mechanism. The feeding mechanism, screening mechanism, and discharge mechanism are arranged in sequence from top to bottom. A discharge control mechanism is provided at the output end of the discharge mechanism. A surrounding track is provided on the outside of the tundish body, and the driving vehicle moves along the surrounding track.

[0008] The steps for adding dry material into the tundish body are as follows:

[0009] S1. Supplementary dry material: Put the bagged dry material into the silo as a whole, and use the feeding mechanism to break the outer package of the bagged dry material. Under the action of gravity, the dry material in the packaging bag spills out and evenly scatters on the screening mechanism. The empty packaging bag can be automatically separated and discharged;

[0010] S2. Screening dry material: Use the screening mechanism to aggregate and jitter-screen the received dry material, clean out the impurities and packaging bag debris mixed in the material, and the screened dry material is transmitted to the output part of the silo through the feeding mechanism;

[0011] S3. Conveying dry material: Use the feeding control mechanism to accurately control the quantity of the material at the output part of the silo, and further convey it, and send it to the top of the tundish body through the conveying hose;

[0012] S4. Applying dry material: Align the output end of the conveying hose with the application area of the tundish body, drive the drive switch of the feeding control mechanism, control the moving vehicle to move along the surrounding track, so that the output end of the conveying hose moves along the application area of the tundish body to evenly apply the material, and at the same time collect the dust generated during the application process;

[0013] S5. Cleaning impurities and packaging bag debris: After the material application is completed, clean the screened impurities and packaging bag debris, and let the collected dust fall into the tundish body before the next use.

[0014] An automatic feeding device for implementing the automatic feeding method of tundish dry material. The feeding mechanism includes a cutter assembly and a partition plate fixedly connected to the inner wall of the silo. The partition plate is an arc-shaped plate structure inclined downward. A bag discharging port is opened on the side wall of the silo at the position corresponding to the top end of the partition plate, and a baffle is integrally provided at the end position of the partition plate where the partition plate is located at the bag discharging port. A number of uniformly distributed strip-shaped holes are opened on the surface of the partition plate;

[0015] The cutter assembly is located below the partition plate. The cutter assembly includes a plurality of first serrated blades and second serrated blades. The plurality of first serrated blades and second serrated blades are evenly distributed and arranged alternately. Each first serrated blade and second serrated blade is respectively installed on the corresponding C-shaped plate. The bottom end of the C-shaped plate is hinged with a U-shaped plate, and the adjacent two U-shaped plates are centrosymmetrically distributed. The ends of the plurality of U-shaped plates on the same side away from the C-shaped plate are combined by a plurality of transmission rods. The transmission rods at both ends penetrate the side wall of the silo and are rotatably connected with the through holes. The two groups of transmission rods are connected by a first belt to synchronously drive the transmission rods on both sides to make the plurality of first serrated blades and second serrated blades alternately pass through the strip-shaped holes to cut the bagged dry material and push the packaging bag.

[0016] Preferably, the unloading mechanism includes a feeding hopper slidably connected to the inside of the silo, a discharge channel is provided at the bottom of one side of the silo, the inner bottom wall of the feeding hopper is inclined, and the output port of the feeding hopper is connected to the input port of the discharge channel;

[0017] The transmission mechanism that this sliding part is connected with this sliding part has the shape of a bottom cam and a bottom cam, and this bottom cam has the shape of a bottom, and this bottom cam has the shape of a bottom, and this bottom cam has the shape of a bottom.

[0018] Preferably, a buffer gasket is sleeved on the outer side of the slide rod, and the buffer gasket is arranged between the bottom wall of the feeding hopper and the inner bottom wall of the silo, and the buffer gasket is made of rubber material.

[0019] Preferably, the screening mechanism includes a screening funnel movably connected to the inner wall of the silo, a slide plate is integrally provided on the top outer side of the screening funnel, a support block is fixedly connected to the inner wall of the silo, and a number of evenly distributed second spring members are provided between the slide plate and the support block, and a vibration motor is installed on the screening funnel.

[0020] Preferably, the screening funnel includes a screening mesh plate, one side of the screening mesh plate is in contact with the inner wall of the silo, and a cleaning port is provided at a position corresponding to the screening mesh plate on the silo, and the other three sides of the screening mesh plate are respectively integrally provided with slope plates.

[0021] Preferably, a closed door is hinged in the cleaning port, and the closed door and the silo are locked by a latch.

[0022] Preferably, the material discharge control mechanism includes a material guiding tube, a spiral auger is movably provided inside the material guiding tube, a second drive motor is installed on one side of the material guiding tube, and the output end of the second drive motor drives the middle shaft of the spiral auger.

[0023] Preferably, the discharge channel is configured to be funnel-shaped, the top end of the feed tube is welded to the discharge channel output port and is internally connected, the output end of the feed tube is docked and installed with the delivery hose and is internally connected, and the output end of the delivery hose is connected to a protective cover.

[0024] The automatic feeding device also includes a dust collection mechanism for absorbing dust raised in the protective cover. The dust collection mechanism includes a dust collector. The input end of the dust collector extends to the top inner side of the protective cover through a negative pressure pipe, and the output end of the dust collector is provided with a dust collection box.

[0025] The present invention has the following beneficial effects:

[0026] 1. By placing bagged dry materials directly into the silo, using the cutter assembly to break the wall, the materials are scattered, and after screening and conveying by the screening mechanism and the discharge mechanism, the homogeneous pure materials are conveyed to the inside of the discharge channel. The speed and flow of the powder are controlled by the feed tube and spiral auger. The motor car is controlled to move along the circular track, so that the output end of the conveying hose moves along the application area of ​​the tundish body to evenly apply the material. This achieves precise operation control, improves the uniformity of material application in the tundish, and collects the dust generated during the application process. The feeding process is more efficient and saves time and effort.

[0027] 2. The bagged dry material is processed by the feeding mechanism. The partition is inclined and has a curvature to facilitate the falling of the material. The first serrated knife and the second serrated blade flip from the lower part of the partition to the higher part, which can move the empty packaging bag upward and discharge it from the bag discharge port. No manual cleaning is required, and continuous feeding operation is achieved, which prevents the cutter assembly from injuring the human body and significantly improves safety. The output end of the conveying hose is connected to a protective cover to convey the material to the tundish, which can cover the dust and reduce the dust from floating. After the material is added, the closed door is opened and the screened impurities and packaging bag debris are taken out from the cleaning port, which is convenient for cleaning and maintenance.

[0028] 3. Through the feeding mechanism and the dust collection mechanism, the raised dust is collected in the dust collection box. After the feeding is completed, the cover under the dust collection box is opened before the next use, and the dust falls into the tundish and continues to be used as dry material, reducing waste and lowering production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of an automatic feeding device used in the method for automatically feeding dry material into a tundish of the present invention;

[0030] Figure 2 A diagram showing the use status of the automatic feeding device provided by the present invention;

[0031] Figure 3 A three-dimensional diagram of the silo and its assembly structure provided by the present invention;

[0032] Figure 4 A first-perspective perspective view of the silo and its assembly structure (cutaway) provided by the present invention;

[0033] Figure 5A second perspective view of the silo and its assembly structure (cutaway) provided by the present invention;

[0034] Figure 6 A third perspective view of the silo and its assembly structure (cutaway) provided by the present invention;

[0035] Figure 7 This is a front view of the silo and its assembly structure (cutaway state) provided by the present invention;

[0036] Figure 8 A perspective view of the cutter assembly provided by the present invention.

[0037] Among them are:

[0038] Silo 1; discharge channel 2; partition 3; screening funnel 4; feeding hopper 5; tundish body 6; strip hole 7; cutter assembly 8; first drive motor 9; discharge control mechanism 10; conveying hose 11; through slot 12; bag discharge port 13; shaft 14; stopper 15; tension roller 16; slide bar 17; nut 18; first spring member 19; buffer gasket 20; slide plate 21; support block 22; second spring member 23; vibration motor 24; cleaning port 25; closing door 26; protective cover 27; dust collection mechanism 28; bracket 29; drive vehicle 30; second belt 31; eccentric block 32; orbital track 33;

[0039] Screening plate-401; Slope plate-402;

[0040] First serrated blade 801; second serrated blade 802; U-shaped plate 803; U-shaped plate 804; transmission rod 805; first belt 806;

[0041] Feeding capillary tube 101; spiral auger 102; second drive motor 103;

[0042] Vacuum cleaner-281; ​​negative pressure pipe-282; dust collection box-283. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance degree of parts, so it cannot be understood as a limitation to the present invention. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example, and do not limit the protection scope of the present invention.

[0045] As Figure 1-8 shown, an automatic feeding method for tundish dry mix uses an automatic feeding device to send the dry mix into the tundish body 6. The automatic feeding equipment includes a bracket 29, and the bracket 29 is installed on a driving vehicle 30. A silo 1 is installed at the top of the bracket 29, and a feeding replenishment mechanism, a screening mechanism and a feeding mechanism are provided in the silo 1. The feeding replenishment mechanism, the screening mechanism and the feeding mechanism are arranged in sequence from top to bottom, and a feeding control mechanism 10 is provided at the output end of the feeding mechanism. A surrounding track 33 is provided outside the tundish body 6, and the driving vehicle 30 moves along the surrounding track 33;

[0046] The feeding replenishment mechanism includes a cutter assembly 8 and a partition 3 fixedly connected to the inner wall of the silo 1. The partition 3 is an arc-shaped plate structure inclined downward. A bag discharging port 13 is formed in the side wall of the silo 1 at the position corresponding to the top end of the partition 3, and a stop block 15 is integrally provided at the end position of the partition 3 located at the bag discharging port 13. A plurality of uniformly distributed strip-shaped holes 7 are formed on the surface of the partition 3;

[0047] The cutter assembly 8 is located below the partition 3, and the cutter assembly 8 includes a plurality of first serrated blades 801 and second serrated blades 802. The plurality of first serrated blades 801 and second serrated blades 802 are evenly distributed and arranged alternately. Each first serrated blade 801 and second serrated blade 802 is respectively installed on a corresponding C-shaped plate 803. The bottom end of the C-shaped plate 803 is hinged with a U-shaped plate 804, and adjacent two U-shaped plates 804 are symmetrically distributed about the center. The ends of the plurality of U-shaped plates 804 on the same side far away from the C-shaped plate 803 are combined by a plurality of transmission rods 805. The transmission rods 805 at both ends penetrate through the side wall of the silo 1 and are rotationally connected with through holes. The two groups of transmission rods 805 are传动连接 by a first belt 806 to synchronously drive the transmission rods 805 on both sides to make the plurality of first serrated blades 801 and second serrated blades交替从条形孔7内穿过进行切割袋装干式料以及推动包装袋。

[0048] As a preferred embodiment of the feeding mechanism in the present invention:

[0049] It should be noted that there is an unclear expression in the original text of item (the part about "传动连接 by a first belt 806" is not clear in the original Chinese description). The above translation is based on the existing text as accurately as possible.The unloading mechanism includes a feeding hopper 5 slidably connected to the inside of the silo 1. A discharge channel 2 is provided at the bottom of one side of the silo 1. The inner bottom wall of the feeding hopper 5 is inclined, and the output port of the feeding hopper 5 is connected to the input port of the discharge channel 2.

[0050] A through slot 12 is provided on the bottom wall of the silo 1, and a positioning seat fixedly connected to the silo 1 is provided on both sides of the through slot 12, and a shaft 14 is rotatably connected between the two positioning seats. The bottom wall of the silo 1 is fixedly connected to the first drive motor 9, and the output end of the first drive motor 9 transmits the transmission shaft 14. A tensioning roller 16 is rotatably connected to the side wall of the silo 1, and the tensioning roller 16 is provided with a first pulley that cooperates with the first belt 806 for transmission. The tensioning roller 16 and the end of the shaft 14 are fixedly connected to the second pulley, and the two second pulleys are connected by a second belt 31 for transmission. An eccentric block 32 is fixedly connected to the outside of the shaft 14, and the eccentric block 32 intermittently touches the bottom wall of the feed hopper 5 as the shaft 14 rotates. The four corners of the bottom of the feed hopper 5 are fixedly connected to a slide rod 17, which penetrates the bottom wall of the silo 1 and is slidably connected to the through hole. A nut 18 is installed at the bottom end of the slide rod 17, and a first spring member 19 is sleeved on the outside of the slide rod 17 and located between the nut 18 and the bottom wall of the silo 1.

[0051] Specifically, a buffer gasket 20 is sleeved on the outer side of the slide rod 17, which is used for buffering protection between the feeding hopper 5 and the inner wall of the silo 1 to extend the service life of the device, and the buffer gasket 20 is arranged between the bottom wall of the feeding hopper 5 and the inner bottom wall of the silo 1, and the buffer gasket 20 is made of rubber material.

[0052] As a preferred embodiment of the screening mechanism in the present invention:

[0053] The screening mechanism includes a screening funnel 4 movably connected to the inner wall of the silo 1, a slide plate 21 is integrally provided on the outer top of the screening funnel 4, a support block 22 is fixedly connected to the inner wall of the silo 1, and a number of evenly distributed second spring members 23 are provided between the slide plate 21 and the support block 22, and a vibration motor 24 is installed on the screening funnel 4.

[0054] As a preferred embodiment of the screening funnel 4 in the present invention:

[0055] The screening funnel 4 includes a screening mesh plate 401, one side of the screening mesh plate 401 is in contact with the inner wall of the silo 1, and a cleaning port 25 is provided at a position corresponding to the screening mesh plate 401 on the silo 1, and the other three sides of the screening mesh plate 401 are respectively integrated with a slope plate 402; the slope plate 402 is used to aggregate the material to the screening mesh plate 401, and the material is screened out in conjunction with the shaking of the screening funnel 4, and the remaining impurities can be discharged from the cleaning port 25.

[0056] Specifically, a closed door 26 is hinged in the cleaning port 25, and the closed door 26 and the silo 1 are locked by a latch. When working, the closed door 26 is used to close the cleaning port 25 to reduce the impact of dust.

[0057] As a preferred embodiment of the material feeding control mechanism 10 in the present invention:

[0058] The material discharge control mechanism 10 includes a material guiding tube 101, and a spiral auger 102 is movably arranged inside the material guiding tube 101. A second drive motor 103 is installed on one side of the material guiding tube 101, and the output end of the second drive motor 103 drives the middle shaft of the spiral auger 102; specifically, the second drive motor 103 is fixed on the outside of the material guiding tube 101, and the output end of the second drive motor 103 drives the middle shaft of the spiral auger 102 through a gear, so that the spiral auger 102 rotates to transport the material.

[0059] In order to facilitate the transportation of materials, the discharge channel 2 is set to be funnel-shaped, the top of the material-leading tube 101 is welded to the output port of the discharge channel 2 and is internally connected, the output end of the material-leading tube 101 is docked and installed with the conveying hose 11 and is internally connected, and the output end of the conveying hose 11 is connected to a protective cover 27. When the dry material is delivered to the tundish, the protective cover 27 is used to prevent dust from flying.

[0060] The automatic feeding device also includes a dust collection mechanism 28 for absorbing dust raised in the protective cover 27. The dust collection mechanism 28 includes a dust collector 281. The input end of the dust collector 281 extends to the top inner side of the protective cover 27 through a negative pressure pipe 282. The output end of the dust collector 281 is provided with a dust collection box 283.

[0061] The steps of adding dry material into the tundish body 6 are as follows:

[0062] S1. Replenishing dry material: Put the entire bagged dry material into the silo 1, and use the feeding mechanism to break the outer packaging of the bagged dry material. Specifically, start the first drive motor 9, the second drive motor 103 and the vibration motor 24. The transmission shaft 14 at the output end of the first drive motor 9 cooperates with the transmission tensioning roller 16 through the second belt 31 and the two second pulleys. Under the drive of the first belt 806, the transmission rods 805 on both sides rotate synchronously, and the U-shaped plate 804 drives the multiple first serrated blades 801 and the second serrated blades 802 to alternately pass through the strip holes 7 to cut the bottom of the bagged dry material. After the packaging bag is cut, the dry material in the packaging bag is spilled under the action of gravity and evenly scattered on the screening funnel 4 of the screening mechanism. The partition 3 is inclined and has a curvature to facilitate the falling of the material, and the first serrated blade 801 and the second serrated blade 802 flip from the lower part of the partition 3 to the higher part, which can move the empty packaging bag upward and discharge it from the bag discharge port 13;

[0063] S2. Screening of dry materials: The screening mechanism gathers and shakes the received dry materials to remove impurities and packaging bag debris mixed in the materials. The screened dry materials are transferred to the output part of the silo 1 through the discharge mechanism;

[0064] Specifically, the vibration motor 24 vibrates, and in conjunction with the deformation of the second spring member 23, the screening funnel 4 can be shaken, and the slope plate 402 is used to aggregate the materials to the screening mesh plate 401. In conjunction with the shaking of the screening funnel 4, the materials are screened, and the remaining impurities can be discharged from the cleaning port 25. The screened materials are dropped into the feeding hopper 5, and the eccentric block 32 intermittently touches the bottom wall of the feeding hopper 5 as the shaft 14 rotates. Under the action of the limit of the slide bar 17 and the energy storage of the first spring member 19, the feeding hopper 5 can be shaken, and the upper surface of the feeding hopper 5 is inclined, so that the dry materials slide to the top of the guiding capillary 101;

[0065] S3. Dry material delivery: The material at the output of the silo 1 is precisely controlled using the material delivery control mechanism 10 and further delivered to the top of the tundish body 6 using the delivery hose 11;

[0066] S4. Applying dry material: Align the output end of the delivery hose 11 with the application area of ​​the tundish body 6, drive the drive switch of the material discharge control mechanism 10, and control the motor vehicle 30 to move along the circular track 33, so that the output end of the delivery hose 11 moves along the application area of ​​the tundish body 6 to evenly apply the material. The spiral auger 102 controls the speed and flow of the powder material. At the same time, the dust generated during the application process is collected. The output end of the delivery hose 11 is connected to the protective cover 27 to transport the material to the tundish, which can cover the dust and reduce the dust from floating.

[0067] S5. Cleaning impurities and bag debris: After adding the material, open the closed door 26, take out the sieved impurities and bag debris from the cleaning port 25, and drop the collected dust into the tundish body 6 before the next use. After adding the material, open the cover under the dust collection box 283 before the next use, and drop the dust into the tundish for continued use as dry material to reduce waste.

[0068] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A method for automatically feeding dry materials into a tundish, wherein the method uses an automatic feeding device to feed the dry materials into the tundish body (6), characterized in that: The automatic feeding device comprises a bracket (29), the bracket (29) being mounted on a driving vehicle (30), a silo (1) being mounted on the top of the bracket (29), and a feeding mechanism, a screening mechanism and a discharge mechanism being arranged in the silo (1), the feeding mechanism, the screening mechanism and the discharge mechanism being arranged in sequence from top to bottom, and a discharge control mechanism (10) being arranged at the output end of the discharge mechanism, a surrounding track (33) being arranged on the outside of the tundish body (6), and the driving vehicle (30) moving along the surrounding track (33); The steps of adding dry material into the tundish body (6) are as follows: S1. Replenishing dry materials: The bagged dry materials are put into the silo (1) and the outer packaging of the bagged dry materials is broken by the feeding mechanism. Under the action of gravity, the dry materials in the packaging bags are scattered and evenly spread on the screening mechanism. The empty packaging bags can be automatically separated and discharged; S2. Screening of dry materials: using a screening mechanism to gather and shake the received dry materials for screening, cleaning out impurities and packaging bag debris mixed in the materials, and transferring the screened dry materials to the output portion of the silo (1) through a discharge mechanism; S3. Transporting dry materials: using the material discharge control mechanism (10) to precisely control the amount of materials at the output portion of the silo (1), and further transporting them to the top of the tundish body (6) using the conveying hose (11); S4, applying dry material: aligning the output end of the conveying hose (11) with the application area of ​​the tundish body (6), driving the driving switch of the material discharge control mechanism (10), and controlling the driving vehicle (30) to move along the circular track (33), so that the output end of the conveying hose (11) moves along the application area of ​​the tundish body (6) to evenly apply the material, and at the same time, collecting the dust generated during the application process; S5. Cleaning impurities and bag debris: After the material is applied, the sieved impurities and bag debris are cleaned, and the collected dust is dropped into the tundish body (6) before the next use.

2. An automatic feeding device used in the automatic feeding method for dry material in a tundish according to claim 1, characterized in that: The feeding mechanism comprises a cutter assembly (8) and a partition (3) fixedly connected to the inner wall of the silo (1), the partition (3) being a downwardly inclined arc-shaped plate structure, a bag discharge opening (13) being provided on the side wall of the silo (1) and corresponding to the top end of the partition (3), and a stopper (15) being integrally provided on the partition (3) at the end of the bag discharge opening (13), and a plurality of evenly distributed strip-shaped holes (7) being provided on the surface of the partition (3); The cutter assembly (8) is located below the partition plate (3), and the cutter assembly (8) includes a plurality of first serrated blades (801) and second serrated blades (802). The plurality of first serrated blades (801) and second serrated blades (802) are evenly distributed and arranged alternately. Each first serrated blade (801) and second serrated blade (802) is respectively installed on a corresponding C-shaped plate (803). The bottom end of the C-shaped plate (803) is hinged with a U-shaped plate (804), and two adjacent U-shaped plates (804) are symmetrically distributed about the center. The ends of the plurality of U-shaped plates (804) on the same side away from the C-shaped plate (803) are combined by a plurality of transmission rods (805). The transmission rods (805) at both ends penetrate through the side wall of the silo (1) and are rotatably connected to the through holes. The two groups of transmission rods (805) are drivingly connected by a first belt (806) to synchronously drive the transmission rods (805) on both sides, so that the plurality of first serrated blades (801) and second serrated blades (802) alternately pass through the strip-shaped holes (7) to cut the bagged dry material and push the packaging bag.

3. The automatic feeding device according to claim 2, characterized in that: The feeding mechanism includes a feeding hopper (5) slidably connected inside the silo (1). A discharge channel (2) is provided at the bottom of one side of the silo (1). The inner bottom wall of the feeding hopper (5) is inclined, and the output port of the feeding hopper (5) is docked with the input port of the discharge channel (2). A through groove (12) is formed in the bottom wall of the silo (1). Positioning seats fixedly connected to the silo (1) are provided on both sides of the through groove (12), and a shaft rod (14) is rotatably connected between the two positioning seats. A first driving motor (9) is fixedly connected to the bottom wall of the silo (1), and the output end of the first driving motor (9) drives the shaft rod (14). A tensioning roller (16) is rotatably connected to the side wall of the silo (1). A first pulley in driving cooperation with the first belt (806) is provided on the tensioning roller (1). Second pulleys are fixedly connected to the ends of the tensioning roller (16) and the shaft rod (14), and the two second pulleys are drivingly connected by a second belt (31). An eccentric block (32) is fixedly connected to the outer side of the shaft rod (14), and the eccentric block (32) intermittently touches the bottom wall of the feeding hopper (5) as the shaft rod (14) rotates. Sliding rods (17) are fixedly connected to the four corners of the bottom of the feeding hopper (5). The sliding rods (17) penetrate through the bottom wall of the silo (1) and are slidably connected to the through holes. A nut (18) is installed at the bottom end of the sliding rod (17). A first spring member (19) is sleeved on the outer side of the sliding rod (17) between the nut (18) and the bottom wall of the silo (1).

4. The automatic feeding device according to claim 3, characterized in that: A buffer gasket (20) is sleeved on the outer side of the sliding rod (17), and the buffer gasket (20) is disposed between the bottom wall of the feeding hopper (5) and the inner bottom wall of the silo (1). The buffer gasket (20) is made of rubber material.

5. The automatic feeding device according to claim 2, characterized in that: The screening mechanism comprises a screening funnel (4) movably connected to the inner wall of a silo (1), a slide plate (21) is integrally provided on the outer top end of the screening funnel (4), a support block (22) is fixedly connected to the inner wall of the silo (1), and a plurality of evenly distributed second spring members (23) are provided between the slide plate (21) and the support block (22), and a vibration motor (24) is installed on the screening funnel (4).

6. The automatic feeding device according to claim 5, characterized in that: The screening funnel (4) comprises a screening mesh plate (401), one side of the screening mesh plate (401) is in contact with the inner wall of the silo (1), and a cleaning port (25) is provided at a position on the silo (1) corresponding to the screening mesh plate (401), and the other three sides of the screening mesh plate (401) are respectively integrally provided with a slope plate (402).

7. The automatic feeding device according to claim 6, characterized in that: A closed door (26) is hinged in the cleaning port (25), and the closed door (26) and the silo (1) are locked by a latch.

8. The automatic feeding device according to claim 3, characterized in that: The material discharge control mechanism (10) comprises a material guiding tube (101), a spiral auger (102) is movably arranged inside the material guiding tube (101), a second drive motor (103) is installed on one side of the material guiding tube (101), and the output end of the second drive motor (103) drives the middle shaft of the spiral auger (102).

9. The automatic feeding device according to claim 8, characterized in that: The discharge channel (2) is configured to be funnel-shaped, the top end of the feed tube (101) is welded to the discharge channel (2) output port and the channels are internally connected, the output end of the feed tube (101) is docked and installed with the delivery hose (11) and the channels are internally connected, and the output end of the delivery hose (11) is connected to a protective cover (27).

10. The automatic feeding device according to claim 9, characterized in that: The utility model further comprises a dust collecting mechanism (28) for absorbing dust raised in the protective cover (27). The dust collecting mechanism (28) comprises a dust collector (281). The input end of the dust collector (281) extends to the top inner side of the protective cover (27) through a negative pressure pipe (282). The output end of the dust collector (281) is provided with a dust collecting box (283).

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