Raw material crushing and grading device for additive premixed feed production and use method of raw material crushing and grading device

Abstract

The invention discloses a raw material crushing classifier for additive premixed feed production. The raw material crushing classifier comprises a crushing box, a classification screening box and a storage box, according to the raw material crushing and grading device for additive premixed feed production and the use method of the raw material crushing and grading device, a worker can control the types of telescopic cutters on the cutter mounting box in real time, and the technical problems that existing crushing equipment is low in crushing efficiency and raw material crushing is not uniform are solved; extrusion bulges are arranged at the bottoms of the rotating shaft and the three arc-shaped cutter mounting boxes, and when the filter screen at the bottom of the crushing box is blocked and accumulated, the accumulated materials are in contact with the extrusion bulges rotating at a high speed and are stirred and extruded by the extrusion bulges, so that the technical problem that the filter screen is easy to block is solved; a multi-stage screening discharging structure is arranged in the grading screening box, and screening grading, slope blanking drying and horizontal blanking drying of materials are achieved by adjusting the rotating state of a screening net; the technical problems of existing raw material crushing and grading equipment for premixed feed production are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of feed processing equipment, and in particular relates to a raw material crushing and classifying device for producing additive premix feed and a use method thereof. Background Art

[0002] In the production process of additive premix feed, the crushing and classification of raw materials are crucial links. The purpose of crushing is to break the raw materials into appropriate particle sizes for better mixing and uniform distribution; while the purpose of classification is to separate raw materials of different particle sizes to meet the needs of different feed products.

[0003] The existing raw material crushing and grading equipment has some problems in use, such as low crushing efficiency, easy clogging of the screening screen, uneven crushing of raw materials, and poor grading and screening effect of crushed materials. These problems not only affect the production efficiency of feed, but also may lead to unstable feed quality and fail to meet market demand.

[0004] With the continuous development of science and technology, the application of raw material crushing and classifying devices in the production of additive premix feed will become more and more extensive. How to solve the above technical problems and promote the development of the industry has become the current technical difficulty in research and development. Summary of the invention

[0005] The present invention provides a raw material crushing and classifying device for additive premix feed production and a use method thereof. Compared with the existing raw material crushing and grading processing device, the staff can control the type and cutting distance of the telescopic knife on the knife installation box in real time, thereby solving the technical problems of low crushing efficiency and uneven raw material crushing of the existing crushing equipment; the bottom of the rotating shaft and the three arc-shaped knife installation boxes are provided with extrusion protrusions, when the filter screen at the bottom of the crushing box is blocked and material accumulates, the accumulated material contacts the high-speed rotating extrusion protrusions and is squeezed by the extrusion protrusions, thereby solving the technical problem that the filter screen is easily blocked; a multi-stage screening and discharging structure is provided in the grading and screening box, and the screening and grading, slope material drying and horizontal material drying operations of the material are realized by adjusting the rotation state of the screening net; thereby solving the technical problems of the existing raw material crushing and grading device for premix feed production.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A raw material crushing and classifying device for the production of additive premix feed comprises a crushing box, a grading and screening box and a storage box, wherein the crushing box is mounted on the upper side of the grading and screening box through a mounting frame, and the storage box is arranged on the side of the grading and screening box, a feed port and a motor are arranged on the top of the crushing box, a rotating shaft is arranged on the main shaft of the motor, the rotating shaft extends downwardly to the inside of the crushing box, at least three arc-shaped tool mounting boxes are arranged on the rotating shaft, and the outer shape structure of each tool mounting box is the same; three mounting slots are provided on the tool mounting box, and a telescopic tool is installed in each mounting slot; the telescopic tool comprises a mounting frame, a driving motor and a telescopic knife, the driving motor is fixed to the bottom of the inner circle of the mounting frame, a knife seat is arranged at the bottom of the telescopic knife, a screw is arranged on the main shaft of the driving motor, the knife seat is threadedly connected to the screw, a guide tube is arranged in the mounting frame, the telescopic knife is penetrated on the guide tube, and a knife outlet is arranged on the top of the mounting frame; a detachable filter screen and a discharge port are arranged at the bottom of the crushing box; A feeding pipe is provided on the top of the grading screening box, a dropping pipe is provided on the bottom of the grading screening box, and a first screening discharging structure, a second screening discharging structure and a third screening discharging structure are provided in sequence from top to bottom in the grading screening box, and the three screening discharging structures have the same outer structure; the first screening discharging structure includes a first discharging pipe and a first screening net, the first screening net is rotatably arranged inside the grading screening box, and the first screening net is driven to rotate by a first motor arranged on the outside of the grading screening box, the first screening net is arranged on the upper side of the first discharging pipe, and when the first screening net is tilted and one side edge is docked with the lower edge of the first discharging pipe mouth, the first discharging pipe is in a discharging state; a collecting pipe is provided on the top of the storage box, and the collecting pipe is docked with the first discharging pipe.

[0007] A handle is provided on the rear side of the storage box, the front side of the storage box is open, a material blocking plate is provided at the open position of the storage box, and walking wheels and legs are provided at the bottom of the storage box; the collecting pipe on the top of the storage box is a collecting pipe with a telescopic structure, and the collecting pipe is arranged at the side position of the storage box.

[0008] The telescopic knives in the telescopic tool are at least four; the telescopic knives in the tool installation box are thin-blade telescopic knives, thick-blade telescopic knives and roller knives.

[0009] A cutting cover plate is provided on the top of each telescopic knife, and the shape of the cutting cover plate is matched with the knife outlet at the top of the installation frame; the cutting cover plate is a circular structure or a diamond structure.

[0010] The bottoms of the rotating shaft and the three arc-shaped tool installation boxes are all provided with extrusion protrusions.

[0011] The crushing box is rotatably mounted on a mounting frame on the top of the grading and screening box. A motor is provided on the side of the mounting frame, and the motor drives the crushing box to rotate on the mounting frame.

[0012] A method for using a raw material crushing and classifying device for producing additive premix feed comprises the following steps: a. Raw material crushing: The raw material enters the crushing box through the feed port and is crushed and cut by the cutter extending from the cutter installation box. Different cutters are selected for crushing according to the type of raw material. When the raw material is branches and leaves, a thin-blade telescopic cutter is selected for crushing; when the raw material is roots and stems, a thick-blade telescopic cutter is selected for crushing; when the raw material is hard shells, a roller cutter is selected for crushing; after crushing, the granular material that meets the requirements passes through the filter at the bottom of the crushing box and enters the grading and screening box downward; B. Grading screening: The screening nets of the three screening and discharging structures are tilted and connected to the corresponding discharging ports. The granular materials entering the grading and screening box pass through the three screening nets from top to bottom in sequence. The granular materials that meet the requirements of the first screening net are collected from the first discharging pipe and enter the storage box connected to it. Large granular materials are screened out from the first screening and discharging structure; medium granular materials are screened out from the second screening and discharging structure; small granular materials are screened out from the third screening and discharging structure; powdery materials are discharged and collected from the bottom of the grading and screening box.

[0013] The screening mesh openings of the first screening and discharging structure are larger than the screening mesh openings of the second screening and discharging structure, and the screening mesh openings of the second screening and discharging structure are larger than the screening mesh openings of the third screening and discharging structure.

[0014] When the raw materials do not need to be graded and screened, the connection between the crushing box and the grading and screening box is disconnected, the crushing box is tilted by a motor drive, and the granular materials are directly collected from the bottom of the crushing box.

[0015] When the raw materials do not need to be graded and screened but need to be dried, the screening nets of the first screening and discharging structure, the second screening and discharging structure and the third screening and discharging structure are controlled to rotate to a vertical state, and an external heat source is connected to all the discharging pipes on the grading and screening box. Hot air enters the crushing box and the grading and screening box through the discharging pipe to dry the granular material. The dried granular material is collected from the drop pipe at the bottom of the grading and screening box.

[0016] Beneficial Effects By adopting the above technical solution, the beneficial effects of the present invention are: The present invention provides a raw material crushing and classifying device for additive premix feed production and a method for using the same. Three arc-shaped tool installation boxes are used on the main shaft of the crushing box. Three installation slots are provided on each tool installation box. A telescopic tool is installed in each installation slot. Three telescopic tools with different telescopic knives are installed on each tool installation box. The staff can control different types of telescopic knives to extend out of the tool installation box for crushing operations according to different types of raw materials. The operating efficiency of raw material crushing is greatly improved. At the same time, the telescopic cutting depth of the telescopic knife can also be adjusted, which further improves the applicable scenarios of material crushing in the crushing box. The grading and screening box can not only grade and screen the granular materials, but also dry the granular materials. Even the relatively moist or watery raw materials can be quickly dried when they are crushed and passed through the grading and screening box. The collecting pipe of the material storage box is seamlessly connected with the discharging pipe of the grading and screening box, so there will be no leakage of materials when the material storage box collects materials.

[0017] In summary, the present invention provides a raw material crushing and classifying device for additive premix feed production and a method of using the same. Compared with the existing raw material crushing and grading processing device, the staff can control the type and cutting distance of the telescopic knife on the tool installation box in real time, which solves the technical problems of low crushing efficiency and uneven raw material crushing of the existing crushing equipment; the bottom of the rotating shaft and the three arc-shaped tool installation boxes are provided with extrusion protrusions. When the filter screen at the bottom of the crushing box is blocked and material accumulates, the accumulated material contacts the high-speed rotating extrusion protrusions and is squeezed by the extrusion protrusions, which solves the technical problem that the filter screen is easily blocked; a multi-stage screening and discharging structure is provided in the grading and screening box, and the screening and grading, slope material drying and horizontal material drying operations of the material are realized by adjusting the rotation state of the screening net; the technical problems of the existing raw material crushing and grading equipment for premix feed production are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 for Figure 1 The main view; Figure 4 The structure of the rotating shaft and the tool installation box of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the rotating shaft and the tool installation box of the present invention is shown in FIG. Figure 2 ; Figure 6 It is a schematic diagram of the structure of the telescopic tool in the present invention when the tool is extended; Figure 7 This is a schematic diagram of the structure of the telescopic tool in the present invention when the tool is retracted; Figure 8 It is a cross-sectional structural schematic diagram of the grading screening box in the present invention; Fig. 9 It is a schematic diagram of the structure inside the grading screening box of the present invention; Fig.10 It is a structural schematic diagram of the material storage box in the present invention; Fig.11 It is a structural schematic diagram of the tool installation box in the present invention.

[0019] Crushing box 1, grading and screening box 2, storage box 3, feed port 4, rotating shaft 5, tool installation box 6, installation frame 7, driving motor 8, leak-proof protrusion 9, tool holder 10, guide tube 11, filter screen 12, feed port 13, feed pipe 14, drop pipe 15, first discharge pipe 16, first screening net 17, handle 18, material blocking plate 19, collecting tube 20, cutting cover plate 21, thin-blade telescopic knife 22, thick-blade telescopic knife 23, roller knife 24. DETAILED DESCRIPTION

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0022] like Figure 1-Figure 11 As shown, a raw material crushing and classifying device for additive premix feed production comprises a crushing box 1, a grading and screening box 2 and a storage box 3. The crushing box 1 is mounted on the upper side of the grading and screening box 2 through a mounting frame, and the storage box 3 is arranged on the side of the grading and screening box 2. A feed inlet 4 and a motor are arranged on the top of the crushing box 1. A rotating shaft 5 is arranged on the main shaft of the motor, and the rotating shaft 5 extends downward into the crushing box 1. At least three arc-shaped tool installation boxes 6 are arranged on the rotating shaft 5, and the outer shape structure of each tool installation box 6 is the same; three installation slots are opened on the tool installation box 6, A telescopic tool is installed in each installation slot; the telescopic tool includes a mounting frame 7, a drive motor 8 and a telescopic knife 9. The drive motor 8 is fixed to the bottom of the inner circle of the mounting frame 7. A knife seat 10 is provided at the bottom of the telescopic knife 9. A screw is provided on the main shaft of the drive motor 8. The knife seat 10 is threadedly connected to the screw. A guide tube 11 is provided in the mounting frame 7. The telescopic knife 9 is inserted on the guide tube 11. A knife outlet is provided at the top of the mounting frame 7. A detachable filter screen 12 and a material discharge port 13 are provided at the bottom of the crushing box 1. The staff can quickly replace the filter screen 12 at the bottom of the crushing box 1. The rotating shaft 5 of the crushing box 1 is connected to the main shaft of the motor. A conductive slip ring is provided, and the motor on the telescopic knife 9 is powered and controlled through the conductive slip ring.

[0023] A feed pipe 14 is provided on the top of the grading screening box 2, and the feed pipe 14 is a retractable structure. A drop pipe 15 is provided on the bottom of the grading screening box 2. The grading screening box 2 is provided with a first screening discharging structure, a second screening discharging structure and a third screening discharging structure from top to bottom, and the three screening discharging structures have the same external structure; the first screening discharging structure includes a first discharging pipe 16 and a first screening net 17, and the first screening net 17 is rotatably arranged inside the grading screening box 2, and the first screening net 17 is driven to rotate by a first motor arranged on the outside of the grading screening box 2. The first screening net 17 is arranged on the upper side of the first discharging pipe 16. When the first screening net 17 is tilted and one side edge is docked with the lower edge of the mouth of the first discharging pipe 16, the first discharging pipe 16 is in a discharging state; a collecting pipe is provided on the top of the storage box 3, and the collecting pipe is docked with the first discharging pipe 16. The inner wall of the grading screening box 2 is provided with a leak-proof protrusion 9 matching the screening net. When the screening net of the screening discharging structure rotates, it fits with the inner wall of the grading screening box 2 to prevent the material from falling from the gap between the screening net and the inner wall of the grading screening box 2, affecting the grading screening effect.

[0024] A handle 18 is provided on the rear side of the storage box 3, the front side of the storage box 3 is open, a material blocking plate 19 is provided at the open position of the storage box 3, and walking wheels and legs are provided at the bottom of the storage box 3; the collecting pipe 20 on the top of the storage box 3 is a collecting pipe 20 of a telescopic structure, and the collecting pipe 20 is arranged at the side position of the storage box 3.

[0025] The telescopic knives 9 in the telescopic knife 9 tool are at least four; the telescopic knives 9 in the tool installation box 6 are thin-blade telescopic knives 22, thick-blade telescopic knives 23 and roller knives 24. The staff can switch different telescopic knives 9 in advance for crushing operations according to different types of raw materials.

[0026] A cutting cover plate 21 is provided on the top of each telescopic knife 9, and the shape of the cutting cover plate 21 is adapted to the knife outlet at the top of the mounting frame 7; the cutting cover plate 21 is a diamond structure. When the telescopic knife 9 is fully retracted, the cutting cover plate 21 blocks the knife outlet at the top of the mounting frame 7 to prevent materials from entering the interior of the telescopic knife 9.

[0027] The bottom of the rotating shaft 5 and the three arc-shaped tool installation boxes 6 are provided with a plurality of metal structure extrusion protrusions. When the filter screen 12 at the bottom of the crushing box 1 is clogged with accumulated materials, the accumulated materials contact the high-speed rotating extrusion protrusions and are pushed and squeezed by the extrusion protrusions, thus solving the technical problem that the filter screen 12 is easily clogged.

[0028] The crushing box 1 is rotatably mounted on the mounting frame on the top of the grading and screening box 2. A motor is provided on the side of the mounting frame, and the motor drives the crushing box 1 to rotate on the mounting frame. When the raw materials do not need to be graded and screened, the motor drives the crushing box 1 to rotate to an angle of 30 degrees. After the materials are crushed by the crushing box 1, they are directly collected from the discharge port 13 at the bottom without passing through the grading and screening box 2.

[0029] A method for using a raw material crushing and classifying device for producing additive premix feed comprises the following steps: a. Raw material crushing: The raw material enters the crushing box 1 through the feed port 4 and is crushed and cut by the cutter extending from the cutter installation box 6. Different cutters are selected for crushing according to the type of raw material. When the raw material is branches and leaves, a thin-blade telescopic knife 22 is selected for raw material crushing; when the raw material is roots and stems, a thick-blade telescopic knife 23 is selected for raw material crushing; when the raw material is hard shells, a roller cutter 24 is selected for raw material crushing; after crushing, the granular material that meets the requirements passes through the filter screen 12 at the bottom of the crushing box 1 and enters the grading and screening box 2 downward; B. Grading screening: The screening nets of the three screening and discharging structures are tilted and connected to the corresponding discharge ports. The granular materials entering the grading and screening box 2 pass through the three screening nets from top to bottom in sequence. The granular materials that meet the requirements of the first screening net 17 are collected from the first discharge pipe 16 and enter the storage box 3 connected thereto. Large granular materials are screened out from the first screening and discharging structure; medium granular materials are screened out from the second screening and discharging structure; small granular materials are screened out from the third screening and discharging structure; and powdery materials are discharged and collected from the bottom of the grading and screening box 2.

[0030] The screening mesh openings of the first screening and discharging structure are larger than the screening mesh openings of the second screening and discharging structure, and the screening mesh openings of the second screening and discharging structure are larger than the screening mesh openings of the third screening and discharging structure.

[0031] When the raw materials do not need to be graded and screened, the connection between the crushing box 1 and the grading and screening box 2 is disconnected, the crushing box 1 is tilted by the motor drive, and the granular materials are directly collected from the bottom of the crushing box 1.

[0032] When the raw materials do not need to be graded and screened but need to be dried, the screening nets of the first screening and discharging structure, the second screening and discharging structure and the third screening and discharging structure are controlled to rotate to a vertical state, and the external heat source is connected to all the discharging pipes on the grading and screening box 2. The hot air enters the crushing box 1 and the grading and screening box 2 through the discharging pipe to dry the granular material. The dried granular material is collected from the drop pipe 15 at the bottom of the grading and screening box 2.

[0033] Embodiment 1 Crushing and grading of raw materials: Before crushing, the operator first selects the type of telescopic knife 9 of the telescopic knife 9 on the knife installation box 6 in advance according to the type of raw materials, adjusts the cutting distance of the telescopic knife 9, replaces the filter screen 12 at the bottom of the crushing box 1 with a filter screen 12 of specified specifications, tilts the screening net in the grading screening box 2 to align with the discharge pipe, starts the crushing box 1, and the raw materials enter the crushing box 1 and are cut and crushed by the corresponding knives. The crushed qualified materials enter the grading screening box 2 through the screening of the filter screen 12, and first fall onto the inclined screening net of the first screening and discharging structure. The materials that meet the requirements are moved to the discharge pipe and discharged into the connected storage box 3 through the inclined screening net. The materials that do not meet the requirements fall downward to the inclined screening net of the second layer for continued grading and screening. The powdery materials remaining after the three-stage screening are collected from the drop pipe 15 at the bottom of the grading and screening box 2; the vibration generated when the crushing box 1 is running can cause the materials to be graded and screened quickly in the grading and screening box 2 to avoid material accumulation or jamming on the screening net.

[0034] Embodiment 2 When the raw materials are crushed and dried and do not need to be graded and screened and are relatively moist and contain moisture, the operator first selects the type of telescopic knife 9 of the telescopic knife 9 on the tool installation box 6 in advance according to the type of raw materials, adjusts the cutting distance of the telescopic knife 9, and replaces the filter screen 12 at the bottom of the crushing box 1 with a filter screen 12 of specified specifications; deflects and tilts the screening net in the grading and screening box 2 to a position opposite to the discharge pipe, leaving a blanking gap between the screening net and the inner wall of the grading and screening box 2, connects the external heat source to the discharge pipe of the grading and screening box 2, and the external heat source transports hot air or hot wind to the inside of the grading and screening box 2 through the discharge pipe. The qualified crushed materials enter the grading and screening box 2 through the screening of the filter screen 12, and the materials move downward through the three inclined screening nets. The materials are dried by hot air or hot wind during the movement, and finally the dried materials are collected from the blanking pipe 15 at the bottom of the grading and screening box 2.

[0035] Embodiment 3 The material is dried and stirred, the crushing box 1 and the grading and screening box 2 are disconnected, the crushing box 1 is deflected, the two upper screening nets in the grading and screening box 2 are deflected and tilted to the opposite position to the discharge pipe, the bottom screening net is adjusted to a continuous rotation state, and the external heat source is connected to the discharge pipe of the grading and screening box 2. The material moves downward through the two inclined screening nets above, and is stirred by the continuously rotating screening net at the third screening net. Finally, the dried material is collected from the drop pipe 15 at the bottom of the grading and screening box 2, completing the material drying and stirring operation.

[0036] The present invention provides a raw material crushing and classifying device for additive premix feed production and a method of using the same. Compared with the existing raw material crushing and grading processing device, the staff can control the type and cutting distance of the telescopic knife 9 on the knife installation box 6 in real time, thereby solving the technical problems of low crushing efficiency and uneven raw material crushing of the existing crushing equipment; the bottom of the rotating shaft 5 and the three arc-shaped knife installation boxes 6 are provided with extrusion protrusions. When the filter screen 12 at the bottom of the crushing box 1 is blocked and accumulated with materials, the accumulated materials contact with the high-speed rotating extrusion protrusions and are squeezed by the extrusion protrusions, thereby solving the technical problem that the filter screen 12 is easily blocked; a multi-stage screening and discharging structure is provided in the grading and screening box 2, and the screening and grading, slope material drying and horizontal material drying operations of the materials are realized by adjusting the rotation state of the screening net; thereby solving the technical problems of the existing raw material crushing and grading equipment for premix feed production.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A raw material crushing and classifying device for additive premix feed production, comprising a crushing box, a grading and screening box and a storage box, wherein the crushing box is mounted on the upper side of the grading and screening box through a mounting frame, and the storage box is arranged on the side of the grading and screening box, characterized in that: The top of the crushing box is provided with a feed port and a motor, the main shaft of the motor is provided with a rotating shaft, the rotating shaft extends downward to the inside of the crushing box, and at least three arc-shaped tool installation boxes are provided on the rotating shaft, and the appearance structure of each tool installation box is the same; three installation slots are provided on the tool installation box, and a telescopic tool is installed in each installation slot; the telescopic tool comprises a mounting frame, a driving motor and a telescopic knife, the driving motor is fixed to the bottom of the inner circle of the mounting frame, a knife seat is provided at the bottom of the telescopic knife, a screw is provided on the main shaft of the driving motor, the knife seat is threadedly connected with the screw, a guide tube is provided in the mounting frame, the telescopic knife is inserted on the guide tube, and a knife outlet is provided at the top of the mounting frame; a detachable filter screen and a discharge port are provided at the bottom of the crushing box; A feeding pipe is provided on the top of the grading screening box, a dropping pipe is provided on the bottom of the grading screening box, and a first screening discharging structure, a second screening discharging structure and a third screening discharging structure are provided in sequence from top to bottom in the grading screening box, and the three screening discharging structures have the same outer structure; the first screening discharging structure includes a first discharging pipe and a first screening net, the first screening net is rotatably arranged inside the grading screening box, and the first screening net is driven to rotate by a first motor arranged on the outside of the grading screening box, the first screening net is arranged on the upper side of the first discharging pipe, and when the first screening net is tilted and one side edge is docked with the lower edge of the first discharging pipe mouth, the first discharging pipe is in a discharging state; a collecting pipe is provided on the top of the storage box, and the collecting pipe is docked with the first discharging pipe.

2. The raw material crushing and classifying device for producing additive premix feed according to claim 1, characterized in that: A handle is provided on the rear side of the storage box, the front side of the storage box is open, a material blocking plate is provided at the open position of the storage box, and walking wheels and legs are provided at the bottom of the storage box; the collecting pipe on the top of the storage box is a collecting pipe with a telescopic structure, and the collecting pipe is arranged at the side position of the storage box.

3. The raw material crushing and classifying device for producing additive premix feed according to claim 2, characterized in that: The telescopic knives in the telescopic tool are at least four; the telescopic knives in the tool installation box are thin-blade telescopic knives, thick-blade telescopic knives and roller knives.

4. The raw material crushing and classifying device for producing additive premix feed according to claim 3, characterized in that: A cutting cover plate is provided on the top of each telescopic knife, and the shape of the cutting cover plate is matched with the knife outlet at the top of the installation frame; the cutting cover plate is a circular structure or a diamond structure.

5. The raw material crushing and classifying device for producing additive premix feed and the method for using the same according to claim 4, characterized in that: The bottoms of the rotating shaft and the three arc-shaped tool installation boxes are all provided with extrusion protrusions.

6. The raw material crushing and classifying device for producing additive premix feed according to claim 5, characterized in that: The crushing box is rotatably mounted on a mounting frame on the top of the grading and screening box. A motor is provided on the side of the mounting frame, and the motor drives the crushing box to rotate on the mounting frame.

7. The method for using the raw material crushing and classifying device for producing additive premix feed according to claim 1, characterized in that: The following steps are involved: a. Raw material crushing: The raw material enters the crushing box through the feed port and is crushed and cut by the cutter extending from the cutter installation box. Different cutters are selected for crushing according to the type of raw material. When the raw material is branches and leaves, a thin-blade telescopic cutter is selected for crushing; when the raw material is roots and stems, a thick-blade telescopic cutter is selected for crushing; when the raw material is hard shells, a roller cutter is selected for crushing; after crushing, the granular material that meets the requirements passes through the filter at the bottom of the crushing box and enters the grading and screening box downward; B. Grading screening: The screening nets of the three screening and discharging structures are tilted and connected to the corresponding discharging ports. The granular materials entering the grading and screening box pass through the three screening nets from top to bottom in sequence. The granular materials that meet the requirements of the first screening net are collected from the first discharging pipe and enter the storage box connected to it. Large granular materials are screened out from the first screening and discharging structure; medium granular materials are screened out from the second screening and discharging structure; small granular materials are screened out from the third screening and discharging structure; powdery materials are discharged and collected from the bottom of the grading and screening box.

8. The method for using the raw material crushing and classifying device for producing additive premix feed according to claim 7, characterized in that: The screening mesh openings of the first screening and discharging structure are larger than the screening mesh openings of the second screening and discharging structure, and the screening mesh openings of the second screening and discharging structure are larger than the screening mesh openings of the third screening and discharging structure.

9. The method for using the raw material crushing and classifying device for producing additive premix feed according to claim 7, characterized in that: When the raw materials do not need to be graded and screened, the connection between the crushing box and the grading and screening box is disconnected, the crushing box is tilted by a motor drive, and the granular materials are directly collected from the bottom of the crushing box.

10. The method for using the raw material crushing and classifying device for producing additive premix feed according to claim 7, characterized in that: When the raw materials do not need to be graded and screened but need to be dried, the screening nets of the first screening and discharging structure, the second screening and discharging structure and the third screening and discharging structure are controlled to rotate to a vertical state, and an external heat source is connected to all the discharging pipes on the grading and screening box. Hot air enters the crushing box and the grading and screening box through the discharging pipe to dry the granular material. The dried granular material is collected from the drop pipe at the bottom of the grading and screening box.

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