Fine crushing device for livestock and poultry feed raw materials

Abstract

The invention provides a livestock and poultry feed raw material fine crushing device, and relates to the technical field of crushing devices, the livestock and poultry feed raw material fine crushing device comprises a shell, a multi-stage crushing mechanism and a high-energy crushing mechanism; a feeding hopper is arranged on the shell, a first chamber and a second chamber are arranged in the shell, the top end of the first chamber is communicated with the feeding hopper, and the bottom end of the first chamber is communicated with the second chamber; the multi-stage crushing mechanism is arranged in the first chamber; and the high-energy crushing mechanism is arranged in the second chamber, and the second chamber is in through connection with a sieve plate. According to the invention, through the multi-stage crushing mechanism, feed raw materials are crushed into fine particles with small particle size difference stage by stage from large to small, the fine particles enter the second chamber, and after the fine particles are further crushed by the high-energy crushing mechanism, the particle size distribution range is narrower, the particle size is more uniform, and the pulverization rate is low. When the particles move to the sieve plate, the sieve plate screens out the particles meeting the target particle size range, and fine crushing of the feed raw materials is achieved by reducing the crushing particle size and reducing the crushing particle size difference.

Description

Technical Field

[0001] The present invention relates to the technical field of pulverizing devices, in particular to a fine pulverizing device for livestock and poultry feed raw materials. Background Art

[0002] Milling is a crucial process in feed production and a significant factor influencing feed quality, yield, and production costs. The closer the particle sizes of the feed ingredients, the easier it is to mix evenly, and the less likely the materials will segregate during subsequent processing. The particle size of feed ingredients can significantly impact the quality of pelleted feed. Lowering the particle size facilitates subsequent mixing, preventing cracks in the finished feed pellets caused by larger particles, thereby reducing the pulverization rate. During the cooking process, smaller particle sizes allow steam to penetrate more easily, resulting in more complete contact and increased starch gelatinization, leading to optimal cooking results.

[0003] However, after the current feed raw materials are crushed, there are problems such as large discreteness of the crushed particle size and serious unevenness of the crushed particle size. This will make it difficult to control the mixing stage of feed processing and the subsequent maturation processing conditions, which can easily lead to adverse consequences such as uneven mixing, insufficient maturation and / or excessive maturation, which in turn manifests as low utilization rate of livestock and poultry feed, high cost of breeding feed, and lack of market competitiveness of breeding products.

[0004] Therefore, how to achieve fine grinding of feed raw materials is a problem that needs to be solved urgently in this technical field. Summary of the Invention

[0005] The purpose of the present invention is to provide a fine grinding device for livestock and poultry feed raw materials to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: The present application provides a device for finely grinding livestock and poultry feed raw materials, comprising: Shell, multi-stage crushing mechanism and high-energy crushing mechanism; A feed hopper is provided on the shell, and a first chamber and a second chamber are provided in the shell, the top end of the first chamber is communicated with the feed hopper, and the bottom end of the first chamber is communicated with the second chamber; The multi-stage crushing mechanism is arranged in the first chamber, and is used to crush the feed raw materials into fine particles with small particle size differences step by step; The high-energy crushing mechanism is arranged in the second chamber, and is used to further crush the fine particles entering the second chamber. The second chamber is connected through a sieve plate, and the sieve plate is used to screen out particles that meet the target particle size range.

[0006] Preferably, the multi-stage crushing mechanism includes multiple fast grinding rollers, multiple slow grinding rollers, a first drive assembly and a second drive assembly, the multiple fast grinding rollers and the multiple slow grinding rollers are arranged longitudinally in the first chamber, the fast grinding rollers are arranged in parallel with the slow grinding rollers, and the spacing between the multiple fast grinding rollers and the multiple slow grinding rollers decreases step by step from top to bottom; the first drive assembly and the second drive assembly are arranged outside the shell, the first drive assembly is transmission connected to the multiple fast grinding rollers, the second drive assembly is transmission connected to the multiple slow grinding rollers, the fast grinding rollers and the slow grinding rollers rotate in opposite directions, and the rotation speed of the fast grinding rollers is greater than the rotation speed of the slow grinding rollers.

[0007] Preferably, the slow grinding roller includes a connecting shaft, a grinding roller and two limiting rings. The connecting shaft is rotatably connected in the first chamber, the connecting shaft is transmission-connected to the second drive assembly, the grinding roller is passed through and connected to the connecting shaft, a plurality of limiting bars are provided on the connecting shaft, a plurality of limiting grooves are provided in the grinding roller, the limiting bars are slidingly connected to the limiting grooves, a plurality of support columns are respectively provided at both ends of the grinding roller, balls are embedded in the ends of the support columns, the limiting ring is fixedly connected in the first chamber, the limiting ring is provided with a wavy ring groove, and the balls are slidingly connected in the wavy ring groove.

[0008] Preferably, the first drive assembly and the second drive assembly have the same structure, and the first drive assembly includes a variable frequency motor, multiple pulleys and a multi-groove pulley. The variable frequency motor is arranged on the outside of the shell, the multi-groove pulley is connected to the variable frequency motor, the pulley is connected to the fast grinding roller, and the pulley is connected to the multi-groove pulley through a belt.

[0009] Preferably, the second chamber is configured as a cylindrical chamber, and the peripheral wall of the cylindrical chamber is configured as a concave semicircular peripheral wall; The high-energy crushing mechanism includes a first rotating shaft and a second rotating shaft, the first rotating shaft is rotatably connected to the second rotating shaft, the first rotating shaft and the second rotating shaft are symmetrically rotatably connected in a cylindrical chamber, the first rotating shaft is connected to a first connecting frame, the first connecting frame is connected to a plurality of first hammers, the second rotating shaft is connected to a second connecting frame, the second connecting frame is connected to a plurality of second hammers, the first rotating shaft is driven by a first motor, the second rotating shaft is driven by a second motor, and the rotation directions of the first rotating shaft and the second rotating shaft are opposite.

[0010] Preferably, the first rotating shaft is provided with a first connecting groove, and the second rotating shaft is provided with a second connecting groove. One end of the docking shaft is connected to the first connecting groove through multiple first bearings, and the other end of the docking shaft is connected to the second connecting groove through multiple second bearings, and the first rotating shaft is close to the second rotating shaft.

[0011] Preferably, the bottom end of the first chamber is connected to two collecting hoppers, the bottom end of the collecting hopper is connected to a feeding channel, and the two feeding channels are respectively connected to the two side ends of the columnar chamber.

[0012] Preferably, a discharge chamber is provided between the collecting hopper and the feed channel, a positioning shaft is rotatably connected in the discharge chamber, a plurality of discharge plates are provided on the positioning shaft, the discharge plates are close to the inner wall of the discharge chamber, and the positioning shaft is driven by a servo motor.

[0013] Preferably, the first hammer piece and the second hammer piece have the same structure, the first hammer piece includes a connecting plate and a hammer sleeve, the tail of the connecting plate is hinged to the first connecting frame, the hammer sleeve is sleeved on the head of the connecting plate, the hammer sleeve and the connecting plate are connected by an anti-detachment bolt, and the outer edge of the hammer sleeve is provided with sharp edges.

[0014] Preferably, the screen plate includes an arc-shaped support frame and an arc-shaped screen piece, the arc-shaped screen piece is abutted in the arc-shaped support frame, the inner wall of the arc-shaped screen piece is connected to a rubber frame, the rubber frame abuts against the outer wall of the shell, a screen outlet is opened through the semicircular circumferential wall, the arc-shaped screen piece is arranged corresponding to the screen outlet, the arc-shaped support frame is connected to a plurality of first connecting ears, and a plurality of second connecting ears are connected to the outer wall of the shell, and the first connecting ear and the second connecting ear are connected by a limit bolt.

[0015] The beneficial effects of the present invention are: The present invention uses a multi-stage crushing mechanism to crush the feed raw materials from large to small into fine particles step by step. The generated particles are relatively uniform in size and have a narrow particle size distribution range. The fine particles enter the second chamber and are further crushed by the high-energy crushing mechanism. The particle size distribution range is narrower, the particle size is more uniform, and the pulverization rate is low. When the particles move to the screen plate, the screen plate screens out particles that meet the target particle size range. By reducing the crushing particle size and reducing the crushing particle size difference, fine crushing of the feed raw materials is achieved.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the embodiments of the present invention. The purposes and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention 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 any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 A side view of the present application; Figure 3 This is a schematic diagram of the multi-stage crushing mechanism structure of this application; Figure 4 This is a schematic diagram of the slow grinding roller structure of this application; Figure 5 This is a schematic diagram of the limiting ring structure of this application; Figure 6 This is a schematic diagram of the high-energy crushing mechanism structure of this application; Figure 7 This is a schematic diagram of the docking shaft connection of this application; Figure 8 This is a schematic diagram of the aggregate hopper connection for this application; Figure 9 This is a schematic diagram of the positioning shaft structure of this application; Figure 10 This is a schematic diagram of the first hammer structure of this application; Figure 11 This is a schematic diagram of the sieve plate structure of this application; Markings in the figure: housing 1, feed hopper 11, first chamber 12, second chamber 13, collecting hopper 14, feed channel 15, discharge chamber 16, positioning shaft 17, discharge plate 18, servo motor 19, multi-stage crushing mechanism 2, fast grinding roller 21, slow grinding roller 22, connecting shaft 221, grinding roller 222, limiting ring 223, limiting bar 224, support column 225, ball 226, wavy ring groove 227, first drive assembly 23, frequency conversion motor 231, pulley 232, multi-groove pulley 233, belt 234, second drive assembly 24, high-energy crushing mechanism 3, first rotating shaft 31, first connecting groove 311, first bearing 312, second rotating shaft 32, second connecting groove 321, second bearing 322, first connecting frame 33, first hammer 34, connecting plate 341, hammer sleeve 342, anti-slip bolt 343, second connecting frame 35, second hammer 36, first motor 37, second motor 38, docking shaft 39, sieve plate 4, arc-shaped support frame 41, arc-shaped sieve plate 42, rubber frame 43, first connecting ear 44. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, 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 making creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are used only to distinguish the description and should not be understood as indicating or implying relative importance.

[0021] like Figure 1-Figure 2 As shown, this embodiment provides a fine grinding device for livestock and poultry feed raw materials, comprising: Shell 1, multi-stage crushing mechanism 2 and high-energy crushing mechanism 3; A feed hopper 11 is provided on the shell 1, and a first chamber 12 and a second chamber 13 are provided in the shell 1. The top end of the first chamber 12 is communicated with the feed hopper 11, and the bottom end of the first chamber 12 is communicated with the second chamber 13; The multi-stage crushing mechanism 2 is arranged in the first chamber 12, and is used to crush the feed raw materials into fine particles with small size differences step by step; The high-energy crushing mechanism 3 is arranged in the second chamber 13, and is used to further crush the fine particles entering the second chamber 13. The second chamber 13 is connected through a sieve plate 4, and the sieve plate 4 is used to screen out particles that meet the target particle size range.

[0022] It can be understood that when the feed raw materials are crushed, the feed raw materials are put into the feed hopper 11, and the feed raw materials in the feed hopper 11 gradually enter the first chamber 12. The feed raw materials in the first chamber 12 are crushed step by step by the multi-stage crushing mechanism 2, and the feed raw materials are crushed step by step from large to small into fine particles. The particle size difference of the particles is reduced by the step-by-step crushing, and the resulting particle size is relatively uniform, the particle size distribution range is narrow, and the crushing intensity is low during the step-by-step crushing process, thereby achieving the effect of reducing energy consumption and reducing wear; after the feed raw materials are crushed step by step into fine particles with a small particle size difference by the multi-stage crushing mechanism 2, the fine particles enter the second chamber 13 from the first chamber 12, and the fine particles are further crushed by the high-energy crushing mechanism 3. Since the particle size of the fine particles is small and relatively uniform, the crushing intensity and difficulty of the multi-stage crushing mechanism 2 are greatly reduced, energy consumption is reduced, and wear is reduced. After the fine particles are further crushed by the high-energy crushing mechanism 3 , the particle size distribution range is narrower, the particle size is more uniform, and the pulverization rate is low. During the pulverization process of the high-energy pulverizing mechanism 3, the particles are driven to move in the second chamber 13. When the particles move to the sieve plate 4, the sieve plate 4 screens out particles that meet the target particle size range. Larger particles are continued to be pulverized by the high-energy pulverizing mechanism 3 in the second chamber 13 until they can be screened out by the sieve plate 4. By replacing the sieve plates 4 with different apertures, the particle size of the final product particles can be regulated; in this technical solution, the feed raw materials are gradually pulverized from large to small into fine particles through the multi-stage pulverizing mechanism 2. The resulting particles are relatively uniform in size and have a narrow particle size distribution range. The fine particles enter the second chamber 13 and are further pulverized by the high-energy pulverizing mechanism 3. The particle size distribution range is narrower, the particle size is more uniform, and the pulverization rate is low. When the particles move to the sieve plate 4, the sieve plate 4 screens out particles that meet the target particle size range. By reducing the pulverized particle size and reducing the pulverized particle size difference, fine pulverization of the feed raw materials is achieved.

[0023] like Figure 1 and Figure 3 As shown, the multi-stage crushing mechanism 2 includes multiple fast grinding rollers 21, multiple slow grinding rollers 22, a first drive assembly 23 and a second drive assembly 24. The multiple fast grinding rollers 21 and the multiple slow grinding rollers 22 are arranged longitudinally in the first chamber 12, the fast grinding rollers 21 and the slow grinding rollers 22 are arranged in parallel, and the spacing between the multiple fast grinding rollers 21 and the multiple slow grinding rollers 22 decreases step by step from top to bottom; the first drive assembly 23 and the second drive assembly 24 are arranged outside the shell 1, the first drive assembly 23 is connected to the multiple fast grinding rollers 21, and the second drive assembly 24 is connected to the multiple slow grinding rollers 22, the fast grinding rollers 21 and the slow grinding rollers 22 rotate in opposite directions, and the speed of the fast grinding rollers 21 is greater than the speed of the slow grinding rollers 22.

[0024] It can be understood that the first drive assembly 23 drives multiple fast grinding rollers 21 to rotate synchronously, and the second drive assembly 24 drives multiple slow grinding rollers 22 to rotate synchronously. The fast grinding rollers 21 and the slow grinding rollers 22 rotate in opposite directions, and the speed ratio of the slow grinding rollers 22 to the fast grinding rollers 21 is 1:2-3. When the feed raw materials fed into the hopper 11 gradually enter the first chamber 12, the feed raw materials first enter between the uppermost fast grinding rollers 21 and the slow grinding rollers 22. Through the cooperation of the fast grinding rollers 21 and the slow grinding rollers 22 with different speeds, longitudinal grinding force and shear force are applied to the feed raw materials to break the feed raw materials into particles. The crushed particles enter between the next fast grinding rollers 21 and the slow grinding rollers 22. Under the action of the grinding force and shear force, the particle size of the particles is further reduced. After passing through the multiple fast grinding rollers 21 and the slow grinding rollers 22 from top to bottom, the feed raw materials are crushed into fine particles with small particle size difference, and then enter the second chamber 13 for further crushing.

[0025] like Figure 4-Figure 5 As shown, the slow grinding roller 22 includes a connecting shaft 221, a grinding roller 222 and two limiting rings 223. The connecting shaft 221 is rotatably connected in the first chamber 12. The connecting shaft 221 is transmission-connected to the second drive assembly 24. The grinding roller 222 is penetrated and connected to the connecting shaft 221. A plurality of limiting bars 224 are provided on the connecting shaft 221. A plurality of limiting grooves are provided in the grinding roller 222. The limiting bars 224 are slidingly connected to the limiting grooves. A plurality of support columns 225 are respectively provided at both ends of the grinding roller 222. A ball 226 is embedded in the end of the support column 225. The limiting ring 223 is fixedly connected in the first chamber 12. The limiting ring 223 is provided with a wavy ring groove 227. The ball 226 is slidingly connected in the wavy ring groove 227.

[0026] It can be understood that after the second driving component 24 is started, it drives the connecting shaft 221 to rotate, and the connecting shaft 221 drives the grinding roller 222 to rotate through the cooperation of the limit bar 224 and the limit slide. During the rotation of the grinding roller 222, the support column 225 drives the ball 226 to slide along the wavy annular groove 227. Under the sliding cooperation of the wavy annular groove 227 of the two limit rings 223 and the balls 226 at both ends of the grinding roller 222, the grinding roller 222 slides back and forth along the limit bar 224 through the limit slide. Through the reciprocating sliding of the grinding roller 222, after the feed raw materials enter between the fast grinding roller 21 and the slow grinding roller 22, horizontal grinding force and shear force are applied to the feed raw materials. The fast grinding roller 21 and the slow grinding roller 22 with different rotation speeds exert longitudinal grinding force and shear force on the feed raw materials, thereby avoiding the crushing blind area and further reducing the particle size difference after crushing.

[0027] like Figure 1As shown, the first drive assembly 23 and the second drive assembly 24 have the same structure. The first drive assembly 23 includes a variable frequency motor 231, multiple pulleys 232 and a multi-groove pulley 233. The variable frequency motor 231 is arranged on the outside of the shell 1, and the multi-groove pulley 233 is connected to the variable frequency motor 231 through transmission. The pulley 232 is connected to the fast grinding roller 21, and the pulley 232 is connected to the multi-groove pulley 233 through a belt 234.

[0028] It can be understood that when the first drive component 23 and / or the second drive component 24 are started, the frequency conversion motor 231 drives the multi-groove pulley 233 to rotate, and the multi-groove pulley 233 drives the multiple pulleys 232 to rotate synchronously through the belt 234, and the pulley 232 drives the fast grinding roller 21 or the slow grinding roller 22 to rotate. After the speed of the frequency conversion motor 231 is adjusted, the speed of the multiple fast grinding rollers 21 or the multiple slow grinding rollers 22 is synchronously reduced or increased, thereby ensuring the stability of the transmission and facilitating adjustment.

[0029] like Figure 2 and Figure 6 As shown, the second chamber 13 is configured as a cylindrical chamber, and the peripheral wall of the cylindrical chamber is configured as a concave semicircular peripheral wall; The high-energy crushing mechanism 3 includes a first rotating shaft 31 and a second rotating shaft 32, which are rotatably connected to each other. The first rotating shaft 31 and the second rotating shaft 32 are symmetrically rotatably connected in the cylindrical chamber. The first rotating shaft 31 is connected to a first connecting frame 33, and a plurality of first hammers 34 are connected to the first connecting frame 33. The second rotating shaft 32 is connected to a second connecting frame 35, and a plurality of second hammers 36 are connected to the second connecting frame 35. The first rotating shaft 31 is driven by a first motor 37, and the second rotating shaft 32 is driven by a second motor 38. The first rotating shaft 31 and the second rotating shaft 32 rotate in opposite directions.

[0030] It can be understood that after the first motor 37 and the second motor 38 are started, they drive the first rotating shaft 31 and the second rotating shaft 32 to rotate in opposite directions. The first rotating shaft 31 drives the multiple first hammer pieces 34 to rotate at high speed on one side of the cylindrical chamber through the first connecting frame 33, and the second rotating shaft 32 drives the multiple second hammer pieces 36 to rotate at high speed on the other side of the cylindrical chamber through the second connecting frame 35. After the fine particles enter the second chamber 13, the multiple first hammer pieces 34 or the multiple second hammer pieces 36 rotating at high speed repeatedly impact and collide with the fine particles to further crush the fine particles. Under the action of centrifugal force, the particles flow along the semicircular circumferential wall, and the flowing particles pass through the sieve plate. 4, after further crushing, the particles that meet the target particle size range are screened out, and the particles that do not meet the target particle size range are driven by the multiple first hammers 34 to contact the multiple second hammers 36 rotating in the opposite direction under the guidance of the semicircular circumferential wall, or are driven by the multiple second hammers 36 to contact the multiple first hammers 34 rotating in the opposite direction. The particles flow at high speed under the drive, and after entering the crushing range of the multiple first hammers 34 or the multiple second hammers 36 rotating in the opposite direction, the particles collide with the first hammers 34 or the second hammers 36 with high intensity, so that the particles can be efficiently crushed to the target particle size range, avoiding a large amount of particles from accumulating in the columnar chamber and affecting the subsequent crushing operation.

[0031] like Figure 7 As shown, the first rotating shaft 31 is provided with a first connecting groove 311, and the second rotating shaft 32 is provided with a second connecting groove 321. One end of the docking shaft 39 is connected to the first connecting groove 311 through multiple first bearings 312, and the other end of the docking shaft 39 is connected to the second connecting groove 321 through multiple second bearings 322. The first rotating shaft 31 is close to the second rotating shaft 32.

[0032] It can be understood that after the first motor 37 and the second motor 38 are started, while driving the first rotating shaft 31 and the second rotating shaft 32 to rotate in opposite directions, the docking shaft 39 supports and mounts the first rotating shaft 31 and the second rotating shaft 32 through the connection of multiple first bearings 312 and multiple second bearings 322, thereby ensuring the smooth rotation of the first rotating shaft 31 and the second rotating shaft 32, as well as ensuring the bearing strength of the first rotating shaft 31 and the second rotating shaft 32, and ensuring that the first rotating shaft 31 and the second rotating shaft 32 can rotate independently.

[0033] like Figure 2 and Figure 8 As shown, the bottom end of the first chamber 12 is connected to two collecting hoppers 14, and the bottom end of the collecting hopper 14 is connected to a feeding channel 15. The two feeding channels 15 are respectively connected to the two side ends of the columnar chamber.

[0034] It can be understood that in the process of further crushing the particles by the high-energy crushing mechanism 3, the semicircular circumferential wall is the area where the particles flow at high speed, so that the fine particles discharged from the first chamber 12 can only enter from the two side ends of the columnar chamber; therefore, two collecting hoppers 14 are connected through the bottom end of the first chamber 12, and the fine particles crushed by the multi-stage crushing mechanism 2 enter the two collecting hoppers 14, and are then introduced into the two side ends of the columnar chamber by two feed channels 15 respectively.

[0035] like Figure 8-Figure 9 As shown, a discharge chamber 16 is provided between the collecting hopper 14 and the feed channel 15 , and a positioning shaft 17 is rotatably connected in the discharge chamber 16 , and a plurality of discharge plates 18 are provided on the positioning shaft 17 , and the discharge plates 18 are close to the inner wall of the discharge chamber 16 , and the positioning shaft 17 is driven by a servo motor 19 .

[0036] It is understandable that when the amount of particles entering from both sides of the columnar chamber at the same time is not much different, the multiple first hammer pieces 34 and the multiple second hammer pieces 36 will each independently perform repeated impact and collision on a part of the particles, making it difficult to carry out the coordinated operation of the particles being driven by the multiple first hammer pieces 34 to contact the multiple second hammer pieces 36 rotating in the opposite direction, or being driven by the multiple second hammer pieces 36 to contact the multiple first hammer pieces 34 rotating in the opposite direction, resulting in difficulty in performing high-intensity impact and collision on the particles; therefore, a discharge chamber 16 is provided between the collecting hopper 14 and the feeding channel 15, and when the servo motor 19 does not drive the positioning shaft 17, the multiple discharge plates 18 restrict the flow in the discharge chamber 16, so that the particles in the collecting hopper 14 cannot enter the feeding channel In the channel 15, the servo motor 19 is started for a certain period of time after a certain interval, and drives the multiple discharge plates 18 to rotate through the positioning shaft 17. The multiple discharge plates 18 push the particles into the feed channel 15. The two servo motors 19 are started alternately at regular intervals, so that the particles in the two collecting hoppers 14 enter the columnar chamber from different side ends at different times. As a result, the particle amount in the crushing area of ​​the first hammer 34 and the particle amount in the crushing area of ​​the second hammer 36 are always in a state of large difference, thereby enhancing the fluidity of the particles in the columnar chamber between the crushing area of ​​the first hammer 34 and the crushing area of ​​the second hammer 36, thereby ensuring that the multiple first hammers 34 and the multiple second hammers 36 cooperate to perform high-intensity impact collision on the particles.

[0037] like Figure 6 and Figure 10 As shown, the first hammer piece 34 and the second hammer piece 36 have the same structure. The first hammer piece 34 includes a connecting plate 341 and a hammer sleeve 342. The tail of the connecting plate 341 is hinged to the first connecting frame 33, and the hammer sleeve 342 is sleeved on the head of the connecting plate 341. The hammer sleeve 342 and the connecting plate 341 are connected by an anti-detachment bolt 343. The outer edge of the hammer sleeve 342 is provided with a sharp edge.

[0038] The cam 342 is actuated to move the hammer 342 upwards and downwards to move the hammer 342 downwards.

[0039] like Figure 11 As shown, the sieve plate 4 includes an arc-shaped support frame 41 and an arc-shaped screen piece 42. The arc-shaped screen piece 42 is arranged against the arc-shaped support frame 41. The inner wall of the arc-shaped screen piece 42 is connected with a rubber frame 43. The rubber frame 43 is in contact with the outer wall of the shell 1. A sieve outlet is opened through the semicircular circumferential wall. The arc-shaped screen piece 42 is arranged corresponding to the sieve outlet. The arc-shaped support frame 41 is connected with a plurality of first connecting ears 44. The outer wall of the shell 1 is connected with a plurality of second connecting ears. The first connecting ear 44 is connected to the second connecting ear by a limit bolt.

[0040] It can be understood that, based on the particle size requirements of the final product particles, when replacing the sieve plate 4 of the corresponding aperture, the arc-shaped support frame 41 is removed from the shell 1, the original arc-shaped screen piece 42 is taken out, and the arc-shaped screen piece 42 of the corresponding aperture is placed in the arc-shaped support frame 41, and then the first connecting ear 44 is connected to the second connecting ear by a limiting bolt. After the connection is in place, the rubber frame 43 in the arc-shaped screen piece 42 is tightly abutted against the outer wall of the shell 1 to seal the gap between the arc-shaped screen piece 42 and the shell 1, and the movable position of the arc-shaped screen piece 42 is limited by the cooperation of the rubber frame 43 and the arc-shaped support frame 41; when the arc-shaped screen piece 42 is damaged, it is only necessary to remove the arc-shaped support frame 41 from the shell 1 and replace the arc-shaped screen piece 42.

[0041] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A fine grinding device for livestock and poultry feed raw materials, characterized in that: include: Shell, multi-stage crushing mechanism and high-energy crushing mechanism; A feed hopper is provided on the shell, and a first chamber and a second chamber are provided in the shell, the top end of the first chamber is communicated with the feed hopper, and the bottom end of the first chamber is communicated with the second chamber; The multi-stage crushing mechanism is arranged in the first chamber, and is used to crush the feed raw materials into fine particles with small size differences step by step; The high-energy crushing mechanism is arranged in the second chamber, and is used to further crush the fine particles entering the second chamber. The second chamber is connected through a sieve plate, and the sieve plate is used to screen out particles that meet the target particle size range.

2. The livestock and poultry feed raw material fine grinding device according to claim 1, characterized in that: The multi-stage crushing mechanism includes multiple fast grinding rollers, multiple slow grinding rollers, a first drive assembly and a second drive assembly. The multiple fast grinding rollers and the multiple slow grinding rollers are arranged longitudinally in the first chamber, the fast grinding rollers are arranged in parallel with the slow grinding rollers, and the spacing between the multiple fast grinding rollers and the multiple slow grinding rollers decreases step by step from top to bottom; the first drive assembly and the second drive assembly are arranged outside the shell, the first drive assembly is connected to the multiple fast grinding rollers, the second drive assembly is connected to the multiple slow grinding rollers, the fast grinding rollers and the slow grinding rollers rotate in opposite directions, and the speed of the fast grinding rollers is greater than the speed of the slow grinding rollers.

3. The livestock and poultry feed raw material fine grinding device according to claim 2, characterized in that: The slow grinding roller includes a connecting shaft, a grinding roller and two limiting rings. The connecting shaft is rotatably connected in the first chamber, and the connecting shaft is transmission-connected to the second drive assembly. The grinding roller is passed through and connected to the connecting shaft. A plurality of limiting bars are provided on the connecting shaft. A plurality of limiting grooves are provided in the grinding roller. The limiting bars are slidingly connected to the limiting grooves. A plurality of support columns are respectively provided at both ends of the grinding roller. Balls are embedded in the ends of the support columns. The limiting ring is fixedly connected in the first chamber. The limiting ring is provided with a wavy ring groove, and the balls are slidingly connected in the wavy ring groove.

4. The livestock and poultry feed raw material fine grinding device according to claim 2, characterized in that: The first drive assembly has the same structure as the second drive assembly. The first drive assembly includes a variable frequency motor, multiple pulleys and a multi-groove pulley. The variable frequency motor is arranged on the outside of the shell. The multi-groove pulley is connected to the variable frequency motor in a transmission manner. The pulley is connected to the fast grinding roller, and the pulley is connected to the multi-groove pulley in a transmission manner through a belt.

5. The livestock and poultry feed raw material fine grinding device according to claim 1, characterized in that: The second chamber is configured as a columnar chamber, and the peripheral wall of the columnar chamber is configured as a concave semicircular peripheral wall; The high-energy crushing mechanism includes a first rotating shaft and a second rotating shaft, the first rotating shaft is rotatably connected to the second rotating shaft, the first rotating shaft and the second rotating shaft are symmetrically rotatably connected in a cylindrical chamber, the first rotating shaft is connected to a first connecting frame, the first connecting frame is connected to a plurality of first hammers, the second rotating shaft is connected to a second connecting frame, the second connecting frame is connected to a plurality of second hammers, the first rotating shaft is driven by a first motor, the second rotating shaft is driven by a second motor, and the rotation directions of the first rotating shaft and the second rotating shaft are opposite.

6. The livestock and poultry feed raw material fine grinding device according to claim 5, characterized in that: The first rotating shaft is provided with a first connecting groove, and the second rotating shaft is provided with a second connecting groove. One end of the docking shaft is connected to the first connecting groove through multiple first bearings, and the other end of the docking shaft is connected to the second connecting groove through multiple second bearings. The first rotating shaft is close to the second rotating shaft.

7. The livestock and poultry feed raw material fine grinding device according to claim 5, characterized in that: The bottom end of the first chamber is connected to two collecting hoppers, and the bottom end of the collecting hopper is connected to a feeding channel, and the two feeding channels are respectively connected to the two side ends of the columnar chamber.

8. The livestock and poultry feed raw material fine grinding device according to claim 7, characterized in that: A discharge chamber is provided between the collecting hopper and the feeding channel. A positioning shaft is rotatably connected in the discharge chamber. A plurality of discharge plates are provided on the positioning shaft. The discharge plates are close to the inner wall of the discharge chamber. The positioning shaft is driven by a servo motor.

9. The livestock and poultry feed raw material fine grinding device according to claim 5, characterized in that: The first hammer piece has the same structure as the second hammer piece. The first hammer piece includes a connecting plate and a hammer sleeve. The tail of the connecting plate is hinged to the first connecting frame. The hammer sleeve is sleeved on the head of the connecting plate. The hammer sleeve and the connecting plate are connected by anti-detachment bolts. The outer edge of the hammer sleeve is provided with sharp corners.

10. The livestock and poultry feed raw material fine grinding device according to claim 5, characterized in that: The screen plate includes an arc-shaped support frame and an arc-shaped screen piece. The arc-shaped screen piece is arranged in abutment with the arc-shaped support frame. The inner wall of the arc-shaped screen piece is connected with a rubber frame. The rubber frame is in abutment with the outer wall of the shell. A screen outlet is opened through the semicircular circumferential wall. The arc-shaped screen piece is arranged corresponding to the screen outlet. The arc-shaped support frame is connected with a plurality of first connecting ears. The outer wall of the shell is connected with a plurality of second connecting ears. The first connecting ear and the second connecting ear are connected by a limit bolt.

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