Crushing device for fermented feed processing

By designing a multi-stage crushing device, including cutting, crushing and grinding stages, the problem of uneven crushing in fermented feed processing is solved and the consistency of powder particle size and efficient crushing process are achieved.

CN222369255UActive Publication Date: 2025-01-21NANXI GUOKE ZHONGNONG BIO-TECH CO LTD
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Patent Information

Application Number
CN202420234402.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-30
Publication Date
2025-01-21
Estimated Expiration
2034-01-30

AI Technical Summary

Technical Problem

During the fermentation feed processing, the raw materials are crushed unevenly, resulting in the powder containing long strips of flattened straw and large-grained corn cobs, affecting the fermentation effect.

Method used

A multi-stage crushing device is designed, including three stages of cutting, crushing and grinding. It uses components such as a 4-blade cross cutter, a spiral crushing combination cutter and a grinding roller to gradually cut and crush the raw materials to ensure that the particle size of the powder is consistent.

Benefits of technology

It achieves the consistency of the particle size of the powder, increases the crushing speed, avoids the problem of overheating of the tool, and ensures the uniformity and fermentation effect of the raw materials.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a crushing device for fermented feed processing, which can ensure that crushed powder is consistent in particle size and high in crushing speed through three crushing stages of cutting, crushing and grinding, and a cutter is not overheated, so that the crushing efficiency is improved. The smashing device comprises a smashing box body, a first material cutting assembly, a second smashing assembly, a third grinding assembly, a fourth rotating shaft and a rotating base, wherein the first material cutting assembly, the second smashing assembly, the third grinding assembly, the fourth rotating shaft and the rotating base are arranged in the smashing box body; a large-aperture filter screen, a small-aperture filter screen and a micro-aperture filter screen are sequentially arranged in the smashing box body from top to bottom; the spiral crushing combined cutter comprises four rows of spiral crushing cutters which are arranged on the second rotating shaft and are arranged along the axis in a single spiral manner, and crushing cutter holders which are arranged on the inner wall of the crushing box body and are distributed in a circular array manner, and saw-toothed blades are arranged on the blade surfaces of the spiral crushing cutters and the crushing cutter holders; and the serrated blades of the spiral crushing cutter and the crushing cutter holder are oppositely arranged and are arc-shaped.
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Description

Technical Field

[0001] The utility model relates to the field of fermented feed processing, in particular to a pulverizing device for fermented feed processing. Background Art

[0002] In the process of fermented feed processing, grinders are often used to grind raw materials. However, it was found during use that the powder of long raw materials such as straw contains long flattened straw, and the powder of raw materials such as corn cobs contains large particles of corn cobs, resulting in uneven powder, which needs to be screened and then crushed again. Utility Model Content

[0003] The utility model aims to provide a pulverizing device for fermented feed processing, which can go through three pulverizing stages of segmentation, crushing and grinding to ensure that the particle size of the pulverized powder is consistent, the pulverizing speed is fast, and the tool will not overheat.

[0004] The embodiment of the utility model is achieved as follows:

[0005] A pulverizing device for processing fermented feed, the pulverizing device comprises: a pulverizing box and a first cutting component, a second crushing component, a third grinding component, a fourth rotating shaft and a rotating base arranged in the pulverizing box, a large-aperture filter screen, a small-aperture filter screen and a micro-aperture filter screen arranged in sequence from top to bottom are arranged in the pulverizing box, and the pulverizing box is divided into a cutting area, a crushing area, a grinding area and a discharging area; the centers of the large-aperture filter screen, the small-aperture filter screen and the micro-aperture filter screen are respectively provided with a first, a second and a third coupling fixing hole; a distributor is provided at the feed inlet of the pulverizing box; a motor is provided at the top of the pulverizing box; the first cutting component comprises a rotating main shaft and a 4-leaf cross cutter fixedly arranged on the rotating main shaft and arranged in a single spiral along the axis, one end of the rotating main shaft is connected to the motor, and the other end is connected to the first coupling, the first coupling is fixed and passes through the first coupling fixing hole; the second crushing component comprises a second rotating shaft, a spiral crushing assembly The tool and the second coupling; the spiral crushing combination tool include 4 rows of spiral crushing knives arranged on the second rotating shaft and arranged in a single spiral along the axis, and crushing knife seats arranged in a circular array on the inner wall of the crushing box, and the blades of the spiral crushing knives and the crushing knife seats are provided with serrated blades; the serrated blades of the spiral crushing knives and the crushing knife seats are arranged opposite to each other and are arc-shaped; the number of crushing knife seats is greater than or equal to the number of spiral crushing knives; the two ends of the second rotating shaft are respectively connected to the first coupling and the second coupling; the third grinding assembly includes a third rotating shaft, a grinding assembly and a third coupling; the grinding assembly includes a grinding roller connected to the third rotating shaft, and a fixed disk arranged on a micro-pore filter; the two ends of the third rotating shaft are respectively connected to the second coupling and the third coupling; the rotating base is fixed to the bottom of the crushing box, the two ends of the fourth rotating shaft are respectively connected to the rotating base and the third coupling, and the fourth rotating shaft is provided with a scraper and a cleaning brush.

[0006] In a preferred embodiment of the present utility model, the above-mentioned distributor includes a main feed pipe and a plurality of auxiliary feed pipes connected to the main feed pipe at the top, and the auxiliary feed pipes are distributed in a circular array based on the main feed pipe.

[0007] In a preferred embodiment of the present utility model, the above-mentioned spiral crushing knife includes a connecting handle and a crushing knife, the connecting handle is provided with a fixing hole connected to the second rotating shaft, the back of the crushing knife is a first arc-shaped surface protruding outward, the blade of the crushing knife includes a second arc-shaped surface extending from the connecting handle and recessed toward the back of the knife, and a third arc-shaped surface connected to the second arc-shaped surface and protruding toward the back of the knife, the second arc-shaped surface and the third arc-shaped surface are provided with serrations, and the fixing hole and the center of mass of the moving knife of the crushing knife are set at an angle of 150-165°.

[0008] In a preferred embodiment of the present utility model, the above-mentioned crushing knife seat includes a first fixed seat, a second crushing knife, an adjustment seat and a connecting rod. The first fixed seat and the adjustment seat are arranged on the inner wall of the crushing box, the handle of the second crushing knife is connected to the first fixed seat, and the back of the second crushing knife is provided with multiple adjustment holes, and the two ends of the connecting rod are respectively connected to the adjustment holes and the adjustment seat.

[0009] In a preferred embodiment of the present invention, the curvature of the blade surface of the second crushing knife matches the curvature of the third curved surface.

[0010] In a preferred embodiment of the present invention, the cleaning brushes and scrapers are arranged alternately, with two of each being provided.

[0011] In a preferred embodiment of the present invention, the above-mentioned pulverizing box also includes an air blast pipe, which is inserted into the pulverizing box from the outer wall of the pulverizing box and guided to the small-aperture filter screen and the large-aperture filter screen.

[0012] The beneficial effects of the embodiments of the utility model are as follows: the fermented feed crushing device puts raw materials such as corn cobs into a crushing box, cuts the corn cobs into large pieces of corn cobs by the 4-leaf cross cutter in the first stage, and then leaks out from the large-aperture filter to the crushing area; the crushing area is provided with 4 rows of spiral crushing knives and multiple groups of crushing knife seats, and the corn cobs are further crushed into small particles of corn cobs and leak out from the small-aperture filter through the impact and shearing of the spiral crushing combination cutters and the impact between the crushing knife seats and the large pieces of corn cobs; and then the corn cobs are ground into fine powder by the grinding rollers in the grinding area and the fixed disks on the micro-aperture filter, and then leak out from the outer ring filter of the micro-aperture filter; after layer-by-layer processing, the particle size of raw materials such as corn cobs that are not easy to break is consistent, and can be fully mixed with the strains, making it easier to ferment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic cross-sectional structure diagram of a pulverizing device according to an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the cutting area of ​​an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the crushing area of ​​an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the grinding area of ​​an embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the circular support frame of the grinding area of ​​the utility model embodiment

[0019] Figure 6 It is a schematic diagram of the structure of the discharging area of ​​an embodiment of the utility model.

[0020] Icons: crushing box 100; first cutting assembly 200; second crushing assembly 300; third grinding assembly 400; fourth cleaning assembly 500; motor 600; large-pore filter 110; small-pore filter 120; micro-pore filter 130; circular support frame 131; micro-pore filter body 132; fixed plate 133; distributor 140; main feed pipe 141; auxiliary feed pipe 142; rotating main shaft 210; cross tool 220; first coupling 230; second rotating shaft 310; spiral crushing combination tool 320; second coupling 33 0; blocking column 340; spiral crushing knife 321; connecting handle 3211; crushing knife 3212; first arc surface 3213; second arc surface 3214; third arc surface 3215; fixing hole 3216; crushing knife seat 322; first fixed seat 3221; second crushing knife 3222; adjusting seat 3223; connecting rod 3224; adjusting hole 3225; third rotating shaft 410; grinding roller 420; third coupling 430; fourth rotating shaft 510; rotating base 520; cleaning brush 530; scraper 540; blast pipe 001; discharge valve 002. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] First embodiment

[0028] See also Figure 1-6 The present embodiment provides a pulverizing device for fermented feed processing, which comprises a pulverizing box 100 and a first cutting component 200, a second crushing component 300, a third grinding component 400, and a fourth cleaning component 500 arranged in the pulverizing box 100.

[0029] Among them, the crushing box 100 is provided with a large-pore filter 110, a small-pore filter 120, and a micro-pore filter 130 arranged in sequence from top to bottom, dividing the crushing box 100 into a cutting area, a crushing area, a grinding area, and a discharging area. The centers of the large-pore filter 110, the small-pore filter 120, and the micro-pore filter 130 are respectively provided with the first, second, and third coupling fixing holes. The micro-pore filter 130 includes a circular support frame 131, a micro-pore filter body 132, and a fixed disk 133 arranged in sequence from bottom to top, and the upper surface of the fixed disk 133 is provided with a grinding disc pattern.

[0030] A motor 600 is provided at the top of the crushing box 100. When the raw material is corn cobs, a distributor 140 is provided at the feed inlet of the crushing box 100. When the raw material is straw, etc., the distributor 140 is not provided at the feed inlet of the crushing box 100. The distributor 140 includes a main feed pipe 141 and a plurality of auxiliary feed pipes 142 connected to the main feed pipe 141 at the top. The main feed pipe 141 and the auxiliary feed pipe 142 are smooth and have no dead angles. The auxiliary feed pipes 142 are distributed in a circular array based on the main feed pipe 141, and the corn cobs are distributed in an orderly manner in the crushing box 100 to prevent blockage.

[0031] See also Figure 2 The first cutting assembly 200 includes a rotating main shaft 210 and a four-leaf cross cutter 220 fixedly arranged on the rotating main shaft 210 and arranged in a single spiral along the axis. One end of the rotating main shaft 210 is connected to the motor 600, and the other end is connected to the first coupling 230. The first coupling 230 is fixed and penetrates the fixing hole of the first coupling 230. The corn cobs or straws are cut into small pieces by the four-leaf cross cutter 220 of the first cutting assembly 200 and discharged from the hollow part of the large-aperture filter 110.

[0032] See also Figure 3 The second crushing assembly 300 includes a second rotating shaft 310, a spiral crushing combination tool 320 and a second coupling 330, wherein the inner wall of the crushing box 100 in the crushing zone is provided with a plurality of vertically arranged circular arrays and semicircular cross-section blocking columns 340.

[0033] The spiral crushing combination tool 320 includes four rows of spiral crushing knives 321 arranged on the second rotating shaft 310 and arranged in a single spiral along the axis, and crushing knife seats 322 arranged on the inner wall of the crushing box 100 in a circular array. The blade surfaces of the spiral crushing knives 321 and the crushing knife seats 322 are provided with serrated blades; the serrated blades of the spiral crushing knives 321 and the crushing knife seats 322 are arranged relative to each other and in an arc shape, so that the spiral crushing knives 321 and the crushing knife seats 322 shear during the rotation process, and at the same time, large-particle raw materials collide with the inner wall of the crushing chamber and the crushing knife seats 322, and are further crushed.

[0034] The spiral crushing combination cutter 320 in the crushing chamber of this embodiment is designed to be arc-shaped, which increases the length of the blade compared to the traditional linear crushing cutter, thereby increasing the effective cutting area of ​​the cutter. At the same time, the arc-shaped blade is set to be serrated. Compared with the traditional smooth blade, the serrated blade in this embodiment can improve the tearing effect of corn cobs or straws during the rotation process. The cutter has both a sliding cutting effect and a tearing effect, thereby better crushing corn cobs and straws.

[0035] In this embodiment, the number of crushing blade seats 322 is greater than or equal to the number of spiral crushing blades 321, so as to ensure the collision crushing effect. The two ends of the second rotating shaft 310 are respectively connected to the first coupling 230 and the second coupling 330, and the coupling is used to transmit the torque of the shaft.

[0036] Specifically, the present embodiment further improves the shape and structure of the spiral crushing knife 321, wherein the spiral crushing knife 321 comprises a connecting handle 3211 and a crushing knife 3212, the connecting handle 3211 is provided with a fixing hole 3216 connected to the second rotating shaft 310, the back of the crushing knife 3212 is a first arcuate surface 3213 protruding outward, the blade of the crushing knife 3212 comprises a second arcuate surface 3214 extending from the connecting handle 3211 and recessed toward the back of the knife, and a third arcuate surface 3215 connected to the second arcuate surface 3214 and protruding toward the back of the knife, the second arcuate surface 3214 and the third arcuate surface 3215 are provided with serrations, and the fixing hole 3216 and the center of mass O of the moving knife of the crushing knife 3212 are respectively connected to the center of the circle to form an angle of 5-10°.

[0037] In this embodiment, the shape of the spiral crushing knife 321 is set to an S-shaped blade surface, further increasing the effective cutting area of ​​the blade, and the two arc-shaped blades reduce the cutting resistance. At the same time, the connection angle of the spiral crushing knife 321 is improved. Traditionally, the center of mass of the rotating tool, the fixing hole 3216 and the center of the connecting handle 3211 are the same horizontal straight line. In this embodiment, the center of mass of the crushing knife 3212 is offset by 5-10° in the opposite direction of the rotation direction to offset the offset effect of the tool during high-speed rotation.

[0038] The crushing knife seat 322 in this embodiment includes a first fixed seat 3221, a second crushing knife 3222, an adjustment seat 3223 and a connecting rod 3224. The first fixed seat 3221 and the adjustment seat 3223 are arranged on the inner wall of the crushing box 100. The handle of the second crushing knife 3222 is connected to the first fixed seat 3221. The back of the second crushing knife 3222 is provided with a plurality of adjustment holes 3225. The two ends of the connecting rod 3224 are respectively connected to the adjustment holes 3225 and the adjustment seat 3223. The crushing knife seat 322 in this embodiment includes a first fixed seat 3221 and an adjustment seat 3223. The angle adjustment of the crushing knife seat 322 is achieved by adjusting the connection position of the connecting rod 3224 and the second crushing knife 3222.

[0039] The curvature of the blade surface of the second crushing knife 3222 matches the curvature of the third curved surface 3215 , and the shear force and tearing force of the spiral crushing knife 321 are mainly achieved through this part, and the second curved surface 3214 mainly has an impact effect.

[0040] See also Figure 4 and 5The third grinding assembly 400 includes a third rotating shaft 410, a grinding assembly and a third coupling 430; the grinding assembly includes a grinding roller 420 connected to the third rotating shaft 410, and a fixed plate 133 arranged on the micropore filter 130; the two ends of the third rotating shaft 410 are respectively connected to the second coupling 330 and the third coupling 430.

[0041] The raw material after being processed in the crushing chamber enters the hole in the middle of the grinding roller 420, and after being ground by the grinding roller 420 and the fixed disk 133, the fine powder leaks out from the edge of the fixed disk 133 and then enters the discharging area.

[0042] See also Figure 6 , a fourth cleaning assembly 500 is provided in the discharge area, which includes a fourth rotating shaft 510, a rotating base 520, a cleaning brush 530 and a scraper 540. The rotating base 520 is fixed to the bottom of the crushing box 100, and the two ends of the fourth rotating shaft 510 are respectively connected to the rotating base 520 and the third coupling 430, and a scraper 540 and a cleaning brush 530 are provided on the fourth rotating shaft 510. The cleaning brushes 530 and the scrapers 540 are arranged alternately, and two are arranged on each, so as to clean the materials at the bottom.

[0043] Furthermore, the crushing box 100 in this embodiment further includes a blast pipe 001, which is inserted from the outer wall of the crushing box 100 into the crushing box 100 and directs the wind to the small-aperture filter 120 and the large-aperture filter 110. When the process is nearly finished, the discharge valve 002 is closed, the blast pipe 001 is ventilated to the inside, and the first cutting component 200, the second crushing component 300, the third grinding component 400, and the fourth cleaning component 500 inside work simultaneously, so that the uncrushed materials contact the cutting component, the crushing component, and the grinding component, so as to be further crushed, and then the discharge valve is opened to discharge the materials to ensure that there is no material inside.

[0044] In summary, the fermented feed crushing device puts raw materials such as corn cobs into the crushing box 100, cuts the corn cobs into large pieces of corn cobs through the 4-leaf cross cutter 220 in the first stage, and then leaks out from the large-aperture filter 110 to the crushing area; the crushing area is provided with 4 rows of spiral crushing knives 321 and multiple groups of crushing knife seats 322, and through the impact and shearing of the spiral crushing combination cutter 320, and the impact between the crushing knife seat 322 and the large piece of corn cob, the corn cob is further crushed into small particles of corn cobs and leaks out from the small-aperture filter 120; then it is ground by the grinding roller 420 in the grinding area and the fixed plate 133 on the micro-aperture filter 130, so as to be ground into fine powder, and then leaks out from the outer ring filter of the micro-aperture filter 130; after layer-by-layer processing, the particle size of raw materials such as corn cobs that are not easy to break is consistent, and can be fully mixed with the strain, making it easier to ferment.

[0045] This specification describes examples of embodiments of the utility model, and it is not intended that these embodiments illustrate and describe all possible forms of the utility model. It should be understood that the embodiments in the specification can be implemented in a variety of alternative forms. The drawings do not need to be drawn to scale; some features can be enlarged or reduced to show the details of specific components. The specific structural and functional details disclosed should not be interpreted as limiting, but are merely representative bases for teaching those skilled in the art to implement the utility model in various forms. It should be understood by those skilled in the art that the multiple features illustrated and described with reference to any of the drawings can be combined with the features illustrated in one or more other drawings to form embodiments that are not explicitly described or described. The described combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the utility model can be used for specific applications or implementations as needed.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pulverizing device for fermented feed processing, characterized in that: The pulverizing device comprises: A crushing box, wherein a large-aperture filter, a small-aperture filter, and a micro-aperture filter are arranged in sequence from top to bottom in the crushing box, and the crushing box is divided into a cutting area, a crushing area, a grinding area, and a discharging area; the centers of the large-aperture filter, the small-aperture filter, and the micro-aperture filter are respectively provided with a first, a second, and a third coupling fixing hole; a motor is arranged on the top of the crushing box; A first cutting assembly, the first cutting assembly comprises a rotating spindle and a four-leaf cross cutter fixedly arranged on the rotating spindle and arranged in a single spiral along the axis, one end of the rotating spindle is connected to the motor, and the other end is connected to a first coupling, and the first coupling is fixed and passes through the first coupling fixing hole; A second crushing assembly, the second crushing assembly comprises a second rotating shaft, a spiral crushing combination tool, and a second coupling; the spiral crushing combination tool comprises four rows of spiral crushing knives arranged on the second rotating shaft and arranged in a single spiral along the axis, and crushing knife seats arranged on the inner wall of the crushing box in a circular array, the blade surfaces of the spiral crushing knives and the crushing knife seats are provided with serrated blades; the serrated blades of the spiral crushing knives and the crushing knife seats are arranged opposite to each other and are arc-shaped; the number of the crushing knife seats is greater than or equal to the number of the spiral crushing knives; the two ends of the second rotating shaft are respectively connected to the first coupling and the second coupling; a third grinding assembly, the third grinding assembly comprising a third rotating shaft, a grinding assembly and a third coupling; the grinding assembly comprising a grinding roller connected to the third rotating shaft, and a fixed disk disposed on the micro-pore filter; two ends of the third rotating shaft are respectively connected to the second coupling and the third coupling; A fourth rotating shaft and a rotating base, the rotating base is fixed at the bottom of the crushing box, two ends of the fourth rotating shaft are respectively connected to the rotating base and the third coupling, and a scraper and a cleaning brush are arranged on the fourth rotating shaft.

2. The fermented feed processing pulverizing device according to claim 1, characterized in that: A distributor is also provided at the feed inlet of the pulverizing box, and the distributor comprises a main feed pipe and a plurality of auxiliary feed pipes connected to the main feed pipe at the top, and the auxiliary feed pipes are distributed in a circular array based on the main feed pipe.

3. The pulverizing device for fermented feed processing according to claim 1, characterized in that: The spiral crushing knife includes a connecting handle and a crushing knife, the connecting handle is provided with a fixing hole connected to the second rotating shaft, the back of the crushing knife is a first arcuate surface protruding outward, the blade of the crushing knife includes a second arcuate surface extending from the connecting handle and recessed toward the back of the knife, and a third arcuate surface connected to the second arcuate surface and protruding toward the back of the knife, the second arcuate surface and the third arcuate surface are provided with saw teeth, and the fixing hole and the center of mass of the moving knife of the crushing knife are set at an angle of 150-165°.

4. The pulverizing device for fermented feed processing according to claim 3, characterized in that: The crushing knife seat includes a first fixed seat, a second crushing knife, an adjustment seat and a connecting rod. The first fixed seat and the adjustment seat are arranged on the inner wall of the crushing box. The handle of the second crushing knife is connected to the first fixed seat. The back of the second crushing knife is provided with multiple adjustment holes. The two ends of the connecting rod are respectively connected to the adjustment holes and the adjustment seat.

5. The pulverizing device for fermented feed processing according to claim 4, characterized in that: The curvature of the blade surface of the second crushing knife matches the curvature of the third curved surface.

6. The pulverizing device for fermented feed processing according to claim 1, characterized in that: The cleaning brushes and scrapers are arranged alternately, with two of each being arranged.

7. The pulverizing device for fermented feed processing according to claim 1, characterized in that: The pulverizing box further comprises an air blast pipe, which is inserted from the outer wall of the pulverizing box into the pulverizing box.