Granulation equipment for feed preparation

Abstract

The invention discloses granule crushing equipment for feed preparation, and particularly relates to the technical field of granule crushing equipment.The granule crushing equipment comprises a material crushing barrel, the rear portion of the upper end of the material crushing barrel is fixedly connected with a crushing structure communicating with an inner cavity of the material crushing barrel, and a primary screening structure is arranged in the middle of the inner cavity of the material crushing barrel; a secondary screening structure is arranged at the lower end of the primary screening structure and the lower portion of the inner cavity of the material crushing barrel, and the lower end of the material crushing barrel is fixedly connected with a discharging structure communicating with the inner cavity of the material crushing barrel. According to the grain crushing equipment for feed preparation, grain grains in the processing barrel are preliminarily crushed through cooperation of the first motor and the crushing assembly, the grains meeting the specified size are matched with a stirring scraper through an isolation net to be fed into the material crushing barrel, and the grain grains are processed into fine and dense grains through multiple screening and crushing; the fine degree is improved, the crushing time under the same precision is shortened, meanwhile, the production efficiency is improved, and the influence of uneven granularity on the subsequent processing process and the animal absorption effect is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pelleting equipment, in particular to pelleting equipment for feed preparation. Background Art

[0002] Feed preparation is an important part of animal husbandry production, which directly affects the nutritional value of feed and the digestion and absorption efficiency of animals. With the large-scale and intensive development of animal husbandry, the requirements for feed preparation technology are getting higher and higher. Traditional feed preparation methods have many shortcomings, such as poor feed palatability and low digestion and absorption rate of nutrients, which restrict the further development of animal husbandry.

[0003] Chinese patent announcement number CN220345972U discloses a novel roller-type pelletizing device, which relates to the field of feed processing technology, and comprises a box body, wherein a filter screen is connected between the inner walls of the box body, and a pelletizing assembly is arranged at the bottom of the filter screen; the pelletizing assembly comprises a motor, and a motor is arranged outside the box body, and a rotating shaft is arranged at the end of the motor and passes through the other side of the box body, and a plurality of eccentric blocks are arranged outside the rotating shaft.

[0004] Although the equipment in the above-mentioned document can crush the material, in actual use, the device still has problems such as uneven material crushing and large particle size of the material after crushing, which affects the mixing or stirring in the subsequent processing process. At the same time, the single crushing process will also lead to rough crushing accuracy and affect the fineness of the material. Summary of the invention

[0005] The main purpose of the present invention is to provide a pelletizing device for feed preparation, which can effectively solve the problems of large pellet size, rough material and uneven pelletizing in existing devices.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A pelletizing device for feed preparation comprises a crushing barrel, the lower end of which is fixedly connected with four supporting legs in a rectangular arrangement, the rear portion of the upper end of which is fixedly connected with a crushing structure connected with an inner cavity of the crushing barrel, a primary screening structure is arranged in the middle of the inner cavity of the crushing barrel, a secondary screening structure is arranged together with the lower end of the primary screening structure and the lower portion of the inner cavity of the crushing barrel, the lower end of the crushing barrel is fixedly connected with a feeding structure connected with its inner cavity, the upper portion of the inner surface of the crushing barrel is provided with vibration grooves in an annular arrangement, and the lower portion of the inner surface of the vibration groove is provided with a plurality of feeding grooves connected with the secondary screening structure in an annular arrangement.

[0008] Preferably, the crushing structure includes support plates which are symmetrically distributed on the left and right and fixedly connected to the upper end of the crushing barrel, the ends of the two support plates close to each other are commonly fixedly connected to a processing barrel, a discharge port is provided at the lower part of the inner surface of the processing barrel, an isolation net is fixedly connected to the inner surface of the discharge port, a connecting pipe connecting the discharge port and the inner cavity of the crushing barrel is fixedly connected to the lower part of the outer surface of the processing barrel, a crushing assembly is rotatably connected to the inner cavity of the processing barrel, and one end of one of the support plates away from the processing barrel is fixedly connected to a motor 1 which is transmission-connected to the crushing assembly.

[0009] Preferably, the crushing assembly includes a central shaft that rotates with the inner surface of the processing barrel and is transmission-connected to the output end of the support plate; a plurality of partition plates are linearly distributed and fixedly connected to the outer surface of the central shaft; a plurality of annularly distributed crushing hammers are rotationally connected to one end of two adjacent partition plates close to each other; and a stirring scraper that is tightly attached to the inner wall of the processing barrel is fixedly connected to the outer surfaces of the two partition plates located on the left and right sides.

[0010] Preferably, the primary screening structure includes a second motor fixedly connected to the upper end of the crushing barrel, the output end of the second motor passes through the upper end of the crushing barrel, extends to the inner cavity of the crushing barrel and is fixedly connected to a transmission shaft through a coupling, the upper part of the outer surface of the transmission shaft is fixedly connected to a mounting plate one, the outer surface of the mounting plate one is annularly distributed and fixedly connected to a plurality of crushing scrapers, a screening assembly slidably connected to a vibration groove is provided on the outer surface of the transmission shaft at a lower part of the mounting plate, the lower part of the outer surface of the transmission shaft is transmission-connected to the secondary screening structure, and the lower end of the transmission shaft is transmission-connected to the discharge structure.

[0011] Preferably, the screening material assembly includes a screen mesh that is slidably connected to the inner surface of the vibration trough, and three sliders that are slidably connected to the inner surface of the vibration trough are fixedly connected in an annular distribution on the outer surface of the screen mesh, and the three sliders are fixedly connected to arc springs that are fixedly connected to the inner surface of the vibration trough on the side having the same rotation direction as the transmission shaft.

[0012] Preferably, a hollow groove is provided on one side of the screen close to the transmission shaft, a plurality of support columns are fixedly connected to the inner surface of the hollow groove in a circular distribution, a mounting ring is fixedly connected to the portion of the transmission shaft located on the inner surface of the hollow groove, a plurality of hinged seats are fixedly connected to the outer surface of the mounting ring in a circular distribution, a plurality of hinged seats are rotatably connected to the inner surfaces of the hinged seats with T-shaped connecting rods, a plurality of horizontal portions of the T-shaped connecting rods are fixedly connected to a hammer at one end away from the hinged seat, and a plurality of vertical portions of the T-shaped connecting rods are fixedly connected to clockwork springs fixedly connected to the hinged seat at both upper and lower ends.

[0013] Preferably, the secondary screening structure includes a second mounting disk fixedly connected to the outer surface of the transmission shaft, a bottom plate fixedly connected to the lower part of the inner surface of the crushing barrel, a rotating ring rotatably connected to the upper end of the bottom plate, a shielding ring fixedly connected to the upper end of the second mounting disk, the inner surface of the shielding ring and the outer surface of the second mounting disk are jointly provided with a screening component distributed in an annular shape and penetrating the inner surface of the rotating ring and connected to the adjacent feed chute, and the inner surface of the shielding ring is provided with a connecting rod fixedly connected to the lower end of the screen and rotatably connected to the outer surface of the transmission shaft.

[0014] Preferably, the screening assembly comprises a wedge block fixedly connected to the outer surface of the second mounting plate, a plurality of screening grids connected to the inner cavity of the wedge block are provided on the side of the wedge block which is in the same direction of rotation, a discharge pipe connected to the inner cavity of the wedge block which is fixedly connected away from the second mounting plate, one end of the discharge pipe away from the second mounting plate passes through the inner surface of the rotating ring and extends to the outer surface of the rotating ring, and its height is consistent with the upper end of the discharge chute, the upper end of the wedge block is rotatably connected to a grinding roller via a bracket, one end of the grinding roller away from the discharge pipe passes through the outer surface of the adjacent shielding ring and extends to the inner cavity of the shielding ring and is fixedly connected to a bevel gear which meshes with the outer surface of the gear plate.

[0015] Preferably, the material discharge structure includes a conical cylinder fixedly connected to the lower end of the crushing cylinder and communicated with the inner cavity thereof, and a connecting shaft fixedly connected to the lower end of the transmission shaft, the outer surface of the connecting shaft is symmetrically fixedly connected with wedge-shaped fan plates, and the ends of the two wedge-shaped fan plates away from the connecting shaft are fixedly connected with a material discharge scraper tightly attached to the inner surface of the adjacent conical cylinder.

[0016] Preferably, a plurality of anti-blocking scraper strips are spirally distributed and fixedly connected to the lower portion of the outer surface of the connecting shaft, and a conical centrifugal material distribution disc is fixedly connected to the lower end of the connecting shaft.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention performs preliminary crushing of the grain particles in the processing cylinder through the cooperation of a motor and a crushing assembly, and sends the particles meeting the specified size into the crushing cylinder through an isolation net and a stirring scraper. The particles fall into the upper side of the primary screening structure and are screened once under the action of the primary screening structure. Unqualified particles are further crushed by the primary screening structure, and qualified particles enter the secondary screening structure through the primary screening structure. After secondary screening and reprocessing by the secondary screening structure, they are crushed into fine small particle powders and sent to the discharge structure through the cooperation of the secondary screening structure and the discharge chute to be discharged outward. Through multiple screening and crushing, the degree of fineness is improved, the crushing time under the same precision is shortened, and the production efficiency is also improved, reducing the impact of uneven particle size on subsequent processing and animal absorption.

[0019] 2. The present invention drives the transmission shaft to rotate through motor 2, and uses the mounting plate 1 and the crushing scraper installed on the transmission shaft to scrape and crush the material particles falling on the top of the screening material component, and sends the particles with qualified particle size into the secondary screening structure through the screening material component, and the large particles are intercepted above the screening material component to be compressed and crushed, and the material is further crushed by the screen holes on the screen and the crushing scraper, and the screen is driven to vibrate periodically by the action of the transmission shaft and the mounting ring, thereby promoting the qualified particles to move downward and improving the crushing efficiency and accuracy.

[0020] 3. The present invention utilizes the function of the screening component to further screen the fine particles, and reprocesses the non-compliant particles through the cooperation of the grinding roller, bevel gear and bottom plate, so as to further improve the accuracy of the crushed particles and reduce the residual particles in the form of lumps and blocks, thereby improving the crushing accuracy, and finally crushing the grain particles into fine grain powder, thereby improving the mixing effect of the grains and additives in the subsequent processing process, and further improving the effects of various nutrients in the feed on livestock. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the crushing barrel of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the crushing structure of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the crushing assembly of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the primary screening structure of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the screening material assembly of the present invention;

[0027] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged local structure at center A;

[0028] Figure 8 It is a structural schematic diagram of the secondary screening structure of the present invention;

[0029] Fig. 9 It is a schematic structural diagram of the screening assembly of the present invention;

[0030] Fig.10 It is a schematic diagram of the transmission relationship between the screening assembly and the gear plate of the present invention;

[0031] Fig.11 It is a structural schematic diagram of the blanking structure of the present invention.

[0032] In the figure: 1. Crushing barrel; 11. Vibrating trough; 12. Feeding trough; 2. Support legs; 3. Crushing structure; 31. Support plate; 32. Processing barrel; 33. Crushing assembly; 331. Central shaft; 332. Separation plate; 333. Crushing hammer; 334. Stirring scraper; 34. Motor 1; 35. Feeding port; 36. Isolation net; 37. Connecting pipe; 4. Feeding structure; 41. Conical barrel; 42. Connecting shaft; 43. Wedge-shaped fan plate; 44. Feeding scraper; 45. Anti-blocking scraper strip; 46. Centrifugal material distribution plate; 5. Primary screening structure; 51. Motor 2; 52. Transmission shaft; 5 3. Mounting plate one; 54. Crushing scraper; 55. Screening assembly; 550. Support column; 551. Screen; 552. Sliding block; 553. Arc spring; 554. Hollow groove; 555. Percussion hammer; 556. Mounting ring; 557. Articulated seat; 558. Spring spring; 559. T-shaped connecting rod; 6. Secondary screening structure; 61. Rotating ring; 62. Mounting plate two; 63. Screening assembly; 631. Wedge block; 632. Grinding roller; 633. Bevel gear; 635. Screening grid; 636. Discharge pipe; 64. Shielding ring; 65. Bottom plate; 66. Gear plate. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1, as Figure 1 and Figure 2 As shown, a pelletizing device for feed preparation comprises a crushing barrel 1, the lower end of which is fixedly connected with four supporting legs 2 in a rectangular arrangement, the rear portion of the upper end of the crushing barrel 1 is fixedly connected with a crushing structure 3 which is connected with the inner cavity of the crushing barrel 1, a primary screening structure 5 is arranged in the middle of the inner cavity of the crushing barrel 1, a secondary screening structure 6 is arranged together with the lower end of the primary screening structure 5 and the lower portion of the inner cavity of the crushing barrel 1, a feeding structure 4 which is connected with the inner cavity of the crushing barrel 1 is fixedly connected with the lower end of the crushing barrel 1, vibration grooves 11 are arranged in an annular arrangement on the upper portion of the inner surface of the crushing barrel 1, and a plurality of feeding grooves 12 which are connected with the secondary screening structure 6 are arranged in an annular arrangement on the lower portion of the inner surface of the vibration groove 11.

[0035] In the livestock breeding process, grain particles such as corn, soybeans, and wheat need to be crushed, and then mixed with other additives, nutrients, probiotics, hormones and other ingredients for feeding. Therefore, in the processing process, crushing the grain particles into fine powder is the first priority.

[0036] Further, in order to initially crush the material particles into fine starch particles, refer to Figure 3The crushing structure 3 includes support plates 31 which are symmetrically distributed on the left and right and fixedly connected to the upper end of the crushing barrel 1. The ends of the two support plates 31 close to each other are commonly fixedly connected to a processing barrel 32. A discharge port 35 is provided at the lower part of the inner surface of the processing barrel 32. An isolation net 36 is fixedly connected to the inner surface of the discharge port 35. A connecting pipe 37 connecting the discharge port 35 and the inner cavity of the crushing barrel 1 is fixedly connected to the lower part of the outer surface of the processing barrel 32. A crushing assembly 33 is rotatably connected to the inner cavity of the processing barrel 32. A motor 34 which is transmission-connected to the crushing assembly 33 is fixedly connected to one end of one of the support plates 31 away from the processing barrel 32.

[0037] A feeding funnel is arranged on the upper side of the processing cylinder 32, and the grain particles are fed into the processing cylinder 32 through the funnel, and the crushing assembly 33 is driven by the motor 34 to impact and knock the grain particles to achieve preliminary crushing.

[0038] Further, in order to produce impact on the grains and cause them to break into small particles, see Figure 4 The crushing assembly 33 includes a central shaft 331 that rotates with the inner surface of the processing cylinder 32 and is transmission-connected to the output end of the support plate 31; a plurality of partition plates 332 are linearly distributed and fixedly connected to the outer surface of the central shaft 331; a plurality of annularly distributed crushing hammers 333 are rotationally connected to one end of two adjacent partition plates 332 that are close to each other; and a stirring scraper 334 that is closely attached to the inner wall of the processing cylinder 32 is fixedly connected to the outer surfaces of the two partition plates 332 on the left and right sides.

[0039] The outer shell of the grain is hard. When the motor 34 drives the central shaft 331 to rotate, the crushing hammer 333 revolves around the central shaft 331 in the processing cylinder 32 under the centrifugal effect. When the crushing hammer 333 hits the outer shell of the grain, the outer shell of the grain will be broken due to the impact. At the same time, due to the large impact, the grain grain will be crushed into multiple pieces.

[0040] When the crushing hammer 333 moves in the processing cylinder 32, the stirring scraper 334 will scrape the grain particles in the processing cylinder 32, causing them to pass through the discharge port 35 periodically. When the size of the particle fragments is smaller than the size of the isolation net 36, they will pass through the isolation net 36 and the connecting pipe 37 and fall into the crushing cylinder 1. When the size is larger, they will be scraped up by the stirring scraper 334 and continue to be impacted and crushed by the crushing hammer 333 during the falling process.

[0041] During the operation of this embodiment, the grain particles in the processing cylinder 32 are firstly crushed by the cooperation of the motor 1 34 and the crushing assembly 33, and the particles meeting the specified size are sent into the crushing cylinder 1 through the isolation net 36 and the stirring scraper 334. The particles fall into the upper side of the primary screening structure 5 and are screened once under the action of the primary screening structure 5. Unqualified particles will be further crushed by the primary screening structure 5, and the particles of qualified size will enter the secondary screening structure 6 through the primary screening structure 5. After secondary screening and reprocessing by the secondary screening structure 6, they are crushed into fine small particle powder and sent to the discharge structure 4 through the cooperation of the secondary screening structure 6 and the discharge chute 12 to be discharged outward. Through multiple screening and crushing, the degree of fineness is improved, the crushing time under the same precision is shortened, and the production efficiency is also improved, reducing the impact of uneven particle size on subsequent processing and animal absorption effect.

[0042] Embodiment 2. Based on Embodiment 1, this embodiment drives the transmission shaft 52 to rotate through the motor 2 51, and uses the mounting plate 1 53 and the crushing scraper 54 installed on the transmission shaft 52 to scrape and crush the material particles falling on the top of the screening component 55, and the particles with qualified particle size are sent to the secondary screening structure 6 through the screening component 55, and the large particles are intercepted above the screening component 55 to be compressed and crushed, and the material is further crushed by the action of the sieve holes on the screen 551 and the crushing scraper 54, and the transmission shaft 52 and the mounting ring 556 are used to drive the screen 551 to vibrate periodically, thereby promoting the qualified particles to move downward and improving the crushing efficiency and accuracy.

[0043] Specifically, in order to further screen and crush the crushed materials, refer to Figure 5 The primary screening structure 5 includes a motor 2 51 fixedly connected to the upper end of the crushing barrel 1, the output end of the motor 2 51 penetrates the upper end of the crushing barrel 1 and extends to the inner cavity of the crushing barrel 1 and is fixedly connected to a transmission shaft 52 through a coupling, the upper part of the outer surface of the transmission shaft 52 is fixedly connected to a mounting plate 1 53, and a plurality of crushing scrapers 54 are fixedly connected to the outer surface of the mounting plate 1 53 in an annular distribution. A screening material assembly 55 slidably connected to the vibration groove 11 is arranged on the outer surface of the transmission shaft 52 at the lower part of the mounting plate 1 53, the lower part of the outer surface of the transmission shaft 52 is transmission-connected to the secondary screening structure 6, and the lower end of the transmission shaft 52 is transmission-connected to the unloading structure 4.

[0044] The initially crushed grain particles will first fall on the top of the screening component 55, and the motor 2 51 will drive the transmission shaft 52 and the mounting plate 1 53 to rotate. During the rotation of the mounting plate 1 53, the crushing scraper 54 will be driven to make a circular motion around the transmission shaft 52 above the screening component 55. At this time, since the screening component 55 cannot move in the vertical direction, the crushing scraper 54 will drive the grain particles to make a circular motion with the screening component 55 when scraping the grain particles above the screening component 55. Particles smaller than the sieve holes in the screening component 55 will directly pass through the sieve holes and fall into the secondary screening structure 6 below, while non-compliant particles will continue to move on the screening component 55 with the crushing scraper 54. At the same time, since the crushed grain particles are irregular in shape, they will be stuck in the sieve holes when passing through the sieve holes, and thus be clamped off by the crushing scraper 54 and the sieve holes to achieve secondary crushing.

[0045] Further, in order to achieve the vibration of the screen 551, so that the medium particles on the upper part fall into the secondary screening structure 6 below, refer to Figure 6 and Figure 7 The screening material assembly 55 includes a screen 551 slidably connected to the inner surface of the vibration groove 11, and three sliders 552 slidably connected to the inner surface of the vibration groove 11 are fixedly connected to the outer surface of the screen 551 in an annular distribution, and the three sliders 552 are fixedly connected to the arc springs 553 fixedly connected to the inner surface of the vibration groove 11 on the same side of the transmission shaft 52 in the same rotation direction;

[0046] A hollow groove 554 is provided on one side of the screen 551 close to the transmission shaft 52, and a plurality of support columns 550 are fixedly connected to the inner surface of the hollow groove 554 in a circular manner, and a mounting ring 556 is fixedly connected to the portion of the transmission shaft 52 located on the inner surface of the hollow groove 554, and a plurality of hinge seats 557 are fixedly connected to the outer surface of the mounting ring 556 in a circular manner, and a plurality of hinge seats 557 are rotatably connected to the inner surfaces of the plurality of hinge seats 557, and a knocking hammer 555 is fixedly connected to the horizontal portions of the plurality of T-shaped connecting rods 559 away from the hinge seat 557, and a clockwork spring 558 fixedly connected to the hinge seat 557 is fixedly connected to the upper and lower ends of the vertical portions of the plurality of T-shaped connecting rods 559.

[0047] During the rotation of the transmission shaft 52, the mounting ring 556 and the hinge seat 557 are driven to revolve around the transmission shaft 52, thereby driving the striking hammer 555 to rotate around the transmission shaft 52 through the T-shaped connecting rod 559. The distance between the striking hammer 555 and the transmission shaft 52 is substantially the same as the distance between the supporting column 550 and the transmission shaft 52. Therefore, during the rotation of the striking hammer 555, it will hit the supporting column 550, and the blocking of the supporting column 550 will cause the T-shaped connecting rod 559 to compress the spring 558 and rotate around the hinge seat 557.

[0048] However, the rotation is an arc trajectory. After the T-shaped connecting rod 559 rotates to a certain angle, the knocking hammer 555 will be separated from the support column 550. At this time, the spring spring 558 is elastically released, and the knocking hammer 555 violently hits the next support column 550, causing the screen 551 to vibrate. The force of the knocking hammer 555 will drive the slider 552 to slide in the vibration groove 11 and compress the arc spring 553, and under the action of the arc spring 553, the screen 551 is driven to rotate in the opposite direction and reset, thereby forming a vibration effect, causing the grain particles above the screen 551 to pass through the sieve holes on the screen 551 and fall into the secondary screening structure 6.

[0049] Embodiment 3: Based on Embodiment 2, this embodiment further utilizes the function of the screening component 63 to further screen the fine particles, and reprocesses the non-compliant particles through the cooperation of the grinding roller 632, the bevel gear 633 and the bottom plate 65, so as to further improve the accuracy of the crushed particles and reduce the residual particles in the form of lumps and blocks, thereby improving the crushing accuracy, and finally crushing the grain particles into fine grain powder, thereby improving the mixing effect of the grains and additives in the subsequent processing process, and further improving the effect of various nutrients in the feed on livestock.

[0050] Specifically, to achieve further screening of fine particles and reprocessing of non-compliant particles, refer to Figure 8 The secondary screening structure 6 includes a mounting plate 2 62 fixedly connected to the outer surface of the transmission shaft 52, a bottom plate 65 fixedly connected to the lower part of the inner surface of the crushing barrel 1, a rotating ring 61 rotatably connected to the upper end of the bottom plate 65, a shielding ring 64 fixedly connected to the upper end of the mounting plate 2 62, and a screening component 63 distributed in an annular shape and penetrating the inner surface of the rotating ring 61 and communicating with the adjacent feed chute 12 is provided on the inner surface of the shielding ring 64. A connecting rod is provided on the inner surface of the shielding ring 64, which is fixedly connected to the lower end of the screen 551 and rotatably connected to the outer surface of the transmission shaft 52.

[0051] The grain particles will fall on the bottom plate 65. At this time, the mounting plate 2 62 will rotate along with the transmission shaft 52 and drive the surrounding screening components 63 to move together. The screening components 63 and the rotating ring 61 rotate synchronously, so the rotating ring 61 will be driven to rotate around the transmission shaft 52 between the screen 551 and the bottom plate 65, thereby isolating the grain particles above the bottom plate 65 from the discharge chute 12.

[0052] Furthermore, in order to screen out the non-compliant particles and perform secondary crushing on them, the compliant particles are fed into the conical cylinder 41 below through the feed chute 12. Fig. 9 and Fig.10The screening assembly 63 includes a wedge block 631 fixedly connected to the outer surface of the second mounting plate 62, and a plurality of screening grids 635 connected to its inner cavity are provided on the side of the wedge block 631 in the same direction of rotation. The wedge block 631 is fixedly connected with a discharge pipe 636 connected to its inner cavity away from the second mounting plate 62, and one end of the discharge pipe 636 away from the second mounting plate 62 passes through the inner surface of the rotating ring 61 and extends to the outer surface of the rotating ring 61. The height of the discharge pipe 636 is consistent with the upper end of the discharge chute 12. The upper end of the wedge block 631 is rotatably connected to a grinding roller 632 through a bracket, and one end of the grinding roller 632 away from the discharge pipe 636 passes through the outer surface of the adjacent shielding ring 64 and extends to the inner cavity of the shielding ring 64 and is fixedly connected to a bevel gear 633 meshing with the outer surface of the gear plate 66.

[0053] During the revolution of the wedge block 631 around the transmission shaft 52, the grains on the upper layer of the bottom plate 65 will hit the surface of the screening grid 635. Through the turning of the wedge block 631, the grains with a particle size smaller than the limit size of the screening grid 635 will enter the inner cavity of the wedge block 631, and the grains with a particle size larger than the screening grid 635 will move upward along the inclined surface of the wedge block 631 and enter under the grinding roller 632.

[0054] When the grinding roller 632 follows the wedge block 631 to revolve around the transmission shaft 52, the gear plate 66 is fixed together with the screen 551 and will not rotate along with the rotation of the transmission shaft 52. Therefore, the grinding roller 632 is driven to rotate by itself under the meshing action of the gear plate 66 and the bevel gear 633, so as to further grind and crush the grains sent by the wedge block 631 into smaller grains, which are then screened or further grinded and crushed by the next wedge block 631.

[0055] Furthermore, under the action of the revolution and centrifugation, the particles inside the wedge block 631 will move toward the rotating ring 61 , and when the discharge pipe 636 is connected to the discharge chute 12 , they will slide down along the discharge chute 12 into the discharge structure 4 below.

[0056] Further, in order to send out the crushed particles, see Fig.11 The material discharge structure 4 includes a conical cylinder 41 fixedly connected to the lower end of the crushing cylinder 1 and communicated with the inner cavity thereof, and a connecting shaft 42 fixedly connected to the lower end of the transmission shaft 52. The outer surface of the connecting shaft 42 is symmetrically fixedly connected with wedge-shaped fan plates 43. The ends of the two wedge-shaped fan plates 43 away from the connecting shaft 42 are fixedly connected with a material discharge scraper 44 that is tightly attached to the inner surface of the adjacent conical cylinder 41; a plurality of anti-blocking scraper strips 45 are spirally distributed and fixedly connected to the lower part of the outer surface of the connecting shaft 42, and a conical centrifugal material distribution plate 46 is fixedly connected to the lower end of the connecting shaft 42.

[0057] The overall shape of the conical barrel 41 is similar to a funnel. After the grains fall into the conical barrel 41 through the discharge chute 12, they will slide down along the slope of the conical barrel 41. However, these powdery substances will inevitably be adsorbed on the inner surface of the conical barrel 41 due to various factors such as static electricity and moisture. Therefore, a discharge scraper 44 is provided to scrape them. The connecting shaft 42 rotates with the transmission shaft 52, and drives the discharge scraper 44 to scrape the surface of the conical barrel 41 through the wedge-shaped fan plate 43, so as to move the materials downward.

[0058] At the same time, an anti-blocking scraper strip 45 is also provided on the outer surface of the connecting shaft 42 to prevent grain particles from agglomerating and clogging in the channel. A centrifugal material distribution plate 46 installed below the connecting shaft 42 can disperse the material in a circular shape to prevent excessive accumulation of the material below the discharge port.

[0059] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pelletizing device for feed preparation, comprising a pelletizing barrel (1), wherein the lower end of the pelletizing barrel (1) is fixedly connected with four supporting legs (2) in a rectangular arrangement, and characterized in that: A crushing structure (3) communicating with the inner cavity of the crushing barrel (1) is fixedly connected to the rear portion of the upper end of the crushing barrel (1); a primary screening structure (5) is arranged in the middle of the inner cavity of the crushing barrel (1); a secondary screening structure (6) is arranged together at the lower end of the primary screening structure (5) and the lower portion of the inner cavity of the crushing barrel (1); a material discharge structure (4) communicating with the inner cavity of the crushing barrel (1) is fixedly connected to the lower end of the crushing barrel (1); a vibration groove (11) is arranged in an annular manner on the upper portion of the inner surface of the crushing barrel (1); and a plurality of material discharge grooves (12) communicating with the secondary screening structure (6) are arranged in an annular manner on the lower portion of the inner surface of the vibration groove (11).

2. A pelletizing device for feed preparation according to claim 1, characterized in that: The crushing structure (3) comprises support plates (31) which are symmetrically distributed on the left and right and fixedly connected to the upper end of the crushing barrel (1); the ends of the two support plates (31) close to each other are commonly fixedly connected to a processing barrel (32); a discharge port (35) is provided at the lower part of the inner surface of the processing barrel (32); an isolation net (36) is fixedly connected to the inner surface of the discharge port (35); a connecting pipe (37) which connects the discharge port (35) and the inner cavity of the crushing barrel (1) is fixedly connected to the lower part of the outer surface of the processing barrel (32); a crushing assembly (33) is rotatably connected to the inner cavity of the processing barrel (32); and a motor (34) which is transmission-connected to the crushing assembly (33) is fixedly connected to the end of one of the support plates (31) away from the processing barrel (32).

3. A pelletizing device for feed preparation according to claim 2, characterized in that: The crushing assembly (33) comprises a central shaft (331) which rotates with the inner surface of the processing cylinder (32) and is transmission-connected to the output end of the support plate (31); a plurality of partition plates (332) are linearly distributed and fixedly connected to the outer surface of the central shaft (331); a plurality of annularly distributed crushing hammers (333) are rotationally connected to the ends of two adjacent partition plates (332) which are close to each other; and a stirring scraper (334) which is closely attached to the inner wall of the processing cylinder (32) is fixedly connected to the outer surfaces of the two partition plates (332) located on the left and right sides.

4. A pelletizing device for feed preparation according to claim 1, characterized in that: The primary screening structure (5) comprises a second motor (51) fixedly connected to the upper end of the crushing barrel (1); the output end of the second motor (51) penetrates the upper end of the crushing barrel (1) and extends to the inner cavity of the crushing barrel (1) and is fixedly connected to a transmission shaft (52) through a coupling; the upper portion of the outer surface of the transmission shaft (52) is fixedly connected to a mounting plate (53); the outer surface of the mounting plate (53) is annularly distributed and fixedly connected to a plurality of crushing scrapers (54); the outer surface of the transmission shaft (52) is provided with a screening assembly (55) slidably connected to the vibration groove (11) at a position below the mounting plate (53); the lower portion of the outer surface of the transmission shaft (52) is transmission-connected to the secondary screening structure (6); and the lower end of the transmission shaft (52) is transmission-connected to the unloading structure (4).

5. A pelletizing device for feed preparation according to claim 4, characterized in that: The screening material assembly (55) comprises a screen (551) slidably connected to the inner surface of the vibration groove (11); three sliders (552) slidably connected to the inner surface of the vibration groove (11) are fixedly connected in an annular manner on the outer surface of the screen (551); and arc springs (553) fixedly connected to the inner surface of the vibration groove (11) are fixedly connected to the sides of the three sliders (552) that rotate in the same direction as the transmission shaft (52).

6. A pelletizing device for feed preparation according to claim 5, characterized in that: A hollow groove (554) is provided on one side of the screen (551) close to the transmission shaft (52); a plurality of support columns (550) are fixedly connected in an annular manner to the inner surface of the hollow groove (554); a mounting ring (556) is fixedly connected to the portion of the transmission shaft (52) located on the inner surface of the hollow groove (554); a plurality of hinge seats (557) are fixedly connected in an annular manner to the outer surface of the mounting ring (556); a plurality of hinge seats (557) are rotatably connected to the inner surfaces of the plurality of hinge seats (557); a plurality of horizontal portions of the plurality of T-shaped connecting rods (559) are fixedly connected at one end away from the hinge seat (557) to a striking hammer (555); and a plurality of vertical portions of the plurality of T-shaped connecting rods (559) are fixedly connected at both upper and lower ends to springs (558) fixedly connected to the hinge seat (557).

7. A pelletizing device for feed preparation according to claim 5, characterized in that: The secondary screening structure (6) comprises a second mounting plate (62) fixedly connected to the outer surface of the transmission shaft (52); a bottom plate (65) fixedly connected to the lower portion of the inner surface of the crushing barrel (1); a rotating ring (61) rotatably connected to the upper end of the bottom plate (65); a shielding ring (64) fixedly connected to the upper end of the second mounting plate (62); a screening assembly (63) distributed in an annular shape and penetrating the inner surface of the rotating ring (61) and communicating with an adjacent feed chute (12) is provided on the inner surface of the shielding ring (64) and the outer surface of the second mounting plate (62); a connecting rod is provided on the inner surface of the shielding ring (64) and is fixedly connected to the lower end of the screen (551) and is rotatably connected to the outer surface of the transmission shaft (52).

8. A pelletizing device for feed preparation according to claim 7, characterized in that: The screening assembly (63) comprises a wedge block (631) fixedly connected to the outer surface of the second mounting plate (62); a plurality of screening grids (635) communicating with the inner cavity of the second mounting plate (62) are provided on the side of the wedge block (631) in the same direction of rotation; a discharge pipe (636) communicating with the inner cavity of the second mounting plate (62) is fixedly connected to the wedge block (631) away from the second mounting plate (62); one end of the discharge pipe (636) away from the second mounting plate (62) penetrates through the inner surface of the rotating ring (61) and extends to the outer surface of the rotating ring (61) at a height consistent with the upper end of the discharge chute (12); the upper end of the wedge block (631) is rotatably connected to a grinding roller (632) via a bracket; one end of the grinding roller (632) away from the discharge pipe (636) penetrates through the outer surface of the adjacent shielding ring (64) and extends to the inner cavity of the shielding ring (64) and is fixedly connected to a bevel gear (633) meshing with the outer surface of the gear plate (66).

9. A pelletizing device for feed preparation according to claim 4, characterized in that: The material discharge structure (4) comprises a conical cylinder (41) fixedly connected to the lower end of the crushing cylinder (1) and communicated with the inner cavity thereof, and a connecting shaft (42) fixedly connected to the lower end of the transmission shaft (52), the outer surface of the connecting shaft (42) being symmetrically fixedly connected with wedge-shaped fan plates (43), and the ends of the two wedge-shaped fan plates (43) away from the connecting shaft (42) being fixedly connected with a material discharge scraper (44) in close contact with the inner surface of the adjacent conical cylinder (41).

10. A pelletizing device for feed preparation according to claim 9, characterized in that: A plurality of anti-blocking scraper strips (45) are spirally distributed and fixedly connected to the lower portion of the outer surface of the connecting shaft (42), and a conical centrifugal material distribution disc (46) is fixedly connected to the lower end of the connecting shaft (42).

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