Swinging pellet mill with pre-crushing function

Abstract

The present invention provides a pre-crushable swing granulator, which belongs to the technical field of granulation equipment. The pre-crushable swing granulator includes a swing granulator, a setting frame, a crushing roller, a transmission mechanism and an inclined screen plate. The setting frame is arranged at the top of the hopper and has a through cavity. There are two crushing rollers, both of which are located in the through cavity, and a shearing position capable of crushing block powder is formed between the two crushing rollers. The transmission mechanism can transmit the power of the drum frame to the two crushing rollers. There are two inclined screen plates, both of which are located on both sides of the through cavity, and a material conveying channel located directly above the shearing position is formed between the two inclined screen plates. The pre-crushable swing granulator provided by the present invention can avoid the pre-treatment of mixed agglomerated powder in advance, save manpower and material resources, and can adapt to the rhythm of teaching to ensure teaching effect.

Description

Technical Field

[0001] The invention belongs to the technical field of granulation equipment, and in particular relates to a swing-type granulator capable of pre-crushing. Background Art

[0002] The swing granulator is a device that uses the swinging action of a rotating drum to press solid materials into granules using a screen. It is widely used in pharmaceutical, food, chemical and other industries.

[0003] In the prior art, a swing-type granulator usually has a hopper with an open top, and an extrusion module is provided at the bottom of the hopper, including a rotating cage (drum) and a screen. After the powder is put into the hopper, it can be formed into granules after passing through the extrusion module. However, in the swing-type granulator used for teaching, the hopper is relatively small, and the agglomeration phenomenon is more serious during the powder placement process or under the condition of interval teaching. The powder needs to be prepared in advance before each class, that is, the agglomerated powder needs to be broken into uniform fragments, which is time-consuming and labor-intensive, and this crushing method will also cause contamination of the pharmaceutical powder. In addition, the open structure of the hopper is prone to dust during the crushing process, causing pollution to the surrounding environment. Summary of the Invention

[0004] The embodiment of the present invention provides a pre-crushing swing-type granulator, which aims to solve the problem of poor practicality of existing small-sized swing-type granulators for teaching, which are unable to cope with the agglomeration of powder materials.

[0005] To achieve the above object, the present invention adopts a technical solution as follows: providing a swing-type pellet mill capable of pre-crushing, comprising a swing-type pellet mill having a hopper with an open top and a reciprocating roller frame located at the bottom of the hopper; an axial direction of the roller frame is set as a first direction, and a horizontal direction perpendicular to the first direction is set as a second direction;

[0006] The pre-crushable oscillating granulator further comprises:

[0007] A frame is provided on the top of the hopper and has a vertically arranged through cavity;

[0008] There are two crushing rollers, both of which are located in the through cavity and are rotatably connected to the erection frame. Both of the crushing rollers are arranged along the first direction, and a shearing position for crushing bulk powder is formed between the two crushing rollers;

[0009] a transmission mechanism, connected to the ends of the drum frame and the crushing rollers, respectively, for transmitting power from the drum frame to the two crushing rollers;

[0010] There are two inclined screen plates, which are respectively located on both sides of the through cavity along the second direction; each inclined screen plate is provided with a plurality of long screen openings for screening non-caking powder; a material conveying channel is formed between the two inclined screen plates and is located directly above the shearing position;

[0011] Among them, as the powder mixture with agglomerates is put into each of the inclined screen plates, the non-agglomerated powder enters the hopper through each long screen opening, and the agglomerated powder slides to the bottom of the inclined screen plate and enters the shearing position after passing through the material channel.

[0012] In a possible implementation, the shearing position is located in the middle of the through cavity along the second direction.

[0013] In a possible implementation, the transmission mechanism includes:

[0014] There are two driving gears, both of which are located outside the erection frame and are coaxially connected to the rotating shafts of the two crushing rollers respectively;

[0015] There are two transmission gears, the two transmission gears mesh with each other, are located between the two driving gears, and mesh with the two driving gears respectively;

[0016] a first pulley, coaxially arranged with the rotating shaft of one of the crushing rollers;

[0017] a first one-way bearing, disposed between the first pulley and the rotating shaft corresponding to the crushing roller;

[0018] a first transmission belt, one end of which is sleeved on the first pulley and the other end of which is sleeved on the disc at the end of the roller frame, for transmitting the power of the roller frame to the first pulley;

[0019] Among them, the rotation directions of the drum frame are set to forward and reverse respectively, and when the block powder is set to be sheared, the rotation of the two crushing rollers is relative rotation; each crushing roller rotates relatively during the forward rotation of the drum frame to achieve intermittent shearing.

[0020] In a possible implementation, the transmission mechanism further includes:

[0021] a second pulley, coaxially arranged with the rotating shaft of the other crushing roller;

[0022] a second one-way bearing, disposed between the second pulley and the rotating shaft corresponding to the crushing roller;

[0023] a second transmission belt, one end of which is sleeved on the first pulley and the other end of which is sleeved on the second pulley;

[0024] Wherein, each of the crushing rollers rotates relatively during the reverse rotation of the drum frame to achieve continuous shearing.

[0025] In a possible implementation, the first pulley is provided with two annular grooves for the first transmission belt and the second transmission belt to be respectively mounted thereon.

[0026] In a possible implementation, a tensioning pulley for tightening the second transmission belt is provided between the two driving gears.

[0027] In one possible implementation, a guide inclined plate is provided in the through cavity, and two guide inclined plates are provided. The two guide inclined plates are respectively located on both sides of the two crushing rollers along the second direction and below each inclined screen plate; there is a spacing space between the bottom end of each guide inclined plate and the corresponding crushing roller for powder to pass through.

[0028] In a possible implementation, the top end of each inclined screen plate is rotatably connected to the erection frame, and the rotation axis is arranged along the first direction; the bottom end of the inclined screen plate extends obliquely downward toward the corresponding crushing roller;

[0029] The pre-crushing swing-type pellet mill also includes a linkage structure, and two linkage structures are provided. The two linkage structures correspond to the two crushing rollers one by one, and are connected to the two inclined screen plates. The two linkage structures are used to drive the two inclined screen plates to swing back and forth after the two crushing rollers rotate.

[0030] In a possible implementation, each of the linkage structures includes:

[0031] An eccentric wheel is coaxially connected to the rotating shaft of the corresponding crushing roller, and the eccentric wheel is provided with a connecting column arranged parallel to the rotating shaft of the corresponding crushing roller at intervals;

[0032] a connecting shaft, arranged along the first direction and connected to the bottom end of the inclined screen plate, with an end of the connecting shaft extending out of the side wall of the erection frame;

[0033] a connecting rod, one end of which is rotatably connected to the connecting column and the other end of which is rotatably connected to the end of the connecting shaft;

[0034] Wherein, an arc-shaped long strip opening for the sliding of the connecting shaft is provided on the side wall of the erection frame.

[0035] In a possible implementation, the transmission mechanism and each of the linkage structures are respectively located on both sides of the erection frame along the first direction.

[0036] The pre-crushable swing granulator provided by this implementation method is based on the existing small swing granulator for teaching, and is provided with a frame that can be conveniently placed on the top of the hopper. Two inclined screen plates are set in the frame, and the two inclined screen plates can form a funnel-shaped open space in the through-hole. After the powder mixed with agglomerates is put onto the inclined screen plates, the long screen openings on the inclined screen plates can ensure that the granular blocks or powders with smaller particle sizes are directly screened, so that they pass directly through the through-hole into the hopper, thereby improving the granulation efficiency and reducing the working intensity of the crushing roller. Moreover, the combination of the inclined screen plates, crushing rollers and the frame can also provide a certain shielding for the open part of the hopper to avoid dust pollution. The two crushing rollers set in the frame can rotate relative to each other under the drive of the transmission mechanism, thereby ensuring that the agglomerated powder entering the shearing position is directly sheared and crushed, thereby ensuring the treatment effect of the agglomerated powder. This method can avoid the need to pre-treat the powder mixed with agglomerates, save manpower and material resources, and adapt to the teaching rhythm to ensure teaching results. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the structure of the swing type granulator with pre-crushing function provided by the embodiment of the present invention Figure 1 ;

[0038] Figure 2 Schematic diagram of the structure of the swing type granulator with pre-crushing function provided by the embodiment of the present invention Figure 2 (The swing pellet machine is hidden, only the drum frame is retained);

[0039] Figure 3 for Figure 2 A schematic diagram of the structure of the pre-crushing oscillating granulator provided in the embodiment from another direction;

[0040] Figure 4 for Figure 2 A schematic structural diagram of a hidden portion erection frame of a pre-crushing oscillating granulator provided in an embodiment;

[0041] Figure 5 for Figure 2 The embodiment provides a front view of the transmission mechanism of the pre-crushing swing type granulator Figure 1 ;

[0042] Figure 6 for Figure 2 The embodiment provides a front view of the transmission mechanism of the pre-crushing swing type granulator Figure 2 (The second pulley, second one-way bearing, tensioning pulley and second transmission belt are not provided).

[0043] Description of reference numerals:

[0044] 10. Swinging pellet machine; 11. Hopper; 12. Roller frame; 13. Screen;

[0045] 20. Erection frame; 21. Arc-shaped strip opening; 22. Guide ramp;

[0046] 30. Crushing roller; 31. Shearing position;

[0047] 40. Transmission mechanism; 41. Drive gear; 42. Transmission gear; 43. First pulley; 431. Annular groove; 44. First one-way bearing; 45. First transmission belt; 46. Second pulley; 47. Second one-way bearing; 48. Second transmission belt; 49. Tensioner;

[0048] 50. Inclined screen plate; 51. Long screen opening;

[0049] 60. Linkage structure; 61. Eccentric wheel; 62. Connecting column; 63. Connecting shaft; 64. Connecting rod. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0051] See Figure 1 Now, the pre-crushing swing granulator provided by the present invention is described.

[0052] The teaching process of pharmacy involves the preparation of medicines, which includes capsules, and the granular medicines in the capsules come from the swing-type granulator 10. Due to the large number of students, the amount of medicine powder prepared each time may also be relatively large, and the medicine powder needs to have a certain humidity. This leads to the phenomenon of medicine powder agglomeration in the period from the end of the previous class to the beginning of the next class, and the phenomenon is relatively serious. Therefore, before each class, it is necessary to manually knock the agglomerated powder to break it into small particles or powder, which seriously reduces the teaching efficiency and also causes medicine pollution, affecting the subsequent experimental process. After the agglomerated powder enters the hopper 11, it will be blocked, affecting the granulation effect.

[0053] In this regard, the present invention proposes a pre-crushing swing type pellet machine, which can be found in Figure 1 and Figure 2 , including a swing-type pellet machine 10, having a hopper 11 with an open top, and a roller frame 12 located at the bottom of the hopper 11 and rotating back and forth, and a screen 13 that can be covered on the bottom of the roller frame 12 at the bottom of the hopper 11.

[0054] The axial direction of the roller frame 12 is set as the first direction, and the horizontal direction perpendicular to the first direction is set as the second direction.

[0055] The pre-crushing oscillating granulator also includes a frame 20, crushing rollers 30, a transmission mechanism 40, and an inclined screen plate 50. The frame 20 is located atop the hopper 11 and has a vertically extending through-hole. Two crushing rollers 30 are provided, each located within the through-hole and rotatably connected to the frame 20. Both crushing rollers 30 are positioned along a first direction, forming a shearing station 31 between the two crushing rollers 30 for crushing lumpy powder. The transmission mechanism 40 is connected to the ends of the drum frame 12 and the crushing rollers 30, respectively, to transmit power from the drum frame 12 to the two crushing rollers 30. Two inclined screen plates 50 are provided, one on each side of the through-hole along a second direction. Each inclined screen plate 50 is equipped with several elongated sieve openings 51 for screening non-lumpy powder. A material feed channel is formed between the two inclined screen plates 50, directly above the shearing station 31.

[0056] Specifically, during the reciprocating rotation of the drum frame 12, power can be transmitted to the two crushing rollers 30 via the transmission mechanism 40, causing the two crushing rollers 30 to rotate relative to each other. When powder mixed with agglomerates is placed on the inclined screen plate 50, smaller particles or powder will directly fall through the long screen opening 51 into the hopper 11 during the downward movement, while larger agglomerated powder will slide to the bottom of the inclined screen plate 50 and fall into the shearing station 31 through the material channel. Subsequently, as the crushing rollers 30 rotate, the agglomerated powder will be directly sheared and crushed.

[0057] Compared to the prior art, the pre-crushing oscillating granulator provided in this embodiment is based on the existing small-sized oscillating granulator for teaching use 10 and is provided with a mounting frame 20 that can be conveniently placed on top of the hopper 11. Two inclined screen plates 50 are provided in the mounting frame 20. The two inclined screen plates 50 can form a funnel-shaped open space in the through-hole. After the powder mixed with agglomerates is placed on the inclined screen plates 50, the long screen openings 51 on the inclined screen plates 50 can ensure that the granular blocks or powder with smaller particle sizes are directly screened, allowing them to pass directly through the through-hole into the hopper 11, thereby improving granulation efficiency and reducing the working intensity of the crushing roller 30. Moreover, the combination of the inclined screen plates 50, the crushing roller 30, and the mounting frame 20 can also provide a certain shielding effect on the open area of ​​the hopper 11 to prevent dust pollution. The two crushing rollers 30 disposed within the frame 20 are capable of relative rotation driven by the transmission mechanism 40, thereby ensuring that the agglomerated powder material entering the shearing station 31 is directly sheared and crushed, thereby ensuring effective treatment of the agglomerated powder material. This approach avoids the need for pre-treatment of the agglomerated powder material, saving manpower and material resources, and adapting to the teaching rhythm to ensure effective teaching.

[0058] In some embodiments, the crushing roller 30 may be Figure 4 The structure shown. Figure 4 The shearing position 31 is located in the middle position of the through-hole along the second direction, that is, the shearing position 31 is in the vertical plane where the axis of the roller frame 12 is located. This structure can ensure that the powder after shearing and crushing by the crushing roller 30 falls into the hopper 11 in the middle position of the through-hole, and the powder sieved on the two inclined screen plates 50 falls into the hopper 11 on both sides of the through-hole along the second direction, ensuring the uniformity of the material entering the hopper 11, thereby ensuring the granulation effect.

[0059] In some embodiments, an embodiment of the transmission mechanism 40 may be as follows: Figure 6 The structure shown. Figure 6 The transmission mechanism 40 includes a drive gear 41, a transmission gear 42, a first pulley 43, a first one-way bearing 44, and a first transmission belt 45. Two drive gears 41 are provided, both located outside the mounting frame 20 and coaxially connected to the rotating shafts of the two crushing rollers 30. Two transmission gears 42 are provided, both meshing with each other and located between the two drive gears 41. The first pulley 43 is coaxially arranged with the rotating shaft of one of the crushing rollers 30. The first one-way bearing 44 is disposed between the first pulley 43 and the rotating shaft of the corresponding crushing roller 30. One end of the first transmission belt 45 is mounted on the first pulley 43, and the other end is mounted on the disc at the end of the drum frame 12, thereby transmitting the power of the drum frame 12 to the first pulley 43.

[0060] In this embodiment, the rotation direction of the drum frame 12 is set to forward and reverse respectively. When the bulk powder is sheared, the two crushing rollers 30 are set to rotate relative to each other. The crushing rollers 30 rotate relative to each other during the forward rotation of the drum frame 12.

[0061] The hopper 11 of the swing-type pellet machine 10 for teaching is relatively small, so it is not convenient to install an additional drive. At the same time, the installation of the transmission mechanism 40 will inevitably occupy space outside the frame 20, which will relatively reduce the size of the through-hole of the frame 20 and do not improve the efficiency of feeding. There are two transmission gears 42 sandwiched between the two drive gears 41, and the size of the drive gear 41 is larger than that of the transmission gear 42. Figure 2The two drive gears 41 can be embedded in the side walls of the erection frame 20. A corresponding circular groove is provided on the outer wall of the erection frame 20. The diameter of this groove is smaller than that of the crushing roller 30, and it can be directly recessed and extend into the circular cavity at the end of the crushing roller 30. Therefore, the size of the two drive gears 41 needs to be smaller than the inner diameter of the circular groove. Therefore, the two drive gears 41 need to be meshed with two transmission gears 42. The provision of the two transmission gears 42 ensures that the two drive gears 41 can rotate relative to each other.

[0062] It should be noted that the erection frame 20 is provided with a protruding shaft for the transmission gear 42 to be rotatably connected.

[0063] In addition, a disc is connected to the end of the roller frame 12, and an annular groove for the first transmission belt 45 to fit into can be opened on the disc.

[0064] The provision of the first one-way bearing 44 ensures that when the first drive belt 45 drives the first pulley 43 in forward rotation, the first pulley 43, through the first one-way bearing 44, drives the corresponding crushing roller 30's rotating shaft in forward rotation. This, in turn, drives the other crushing roller 30 in reverse rotation through the two drive gears 42. The forward-rotating crushing roller 30 and the reverse-rotating crushing roller 30 rotate relative to each other, thereby achieving shear crushing of the agglomerated powder. However, when the first drive belt 45 drives the first belt in reverse rotation, the second pulley 46 cannot transmit power to the corresponding crushing roller 30, and both crushing rollers 30 remain stationary.

[0065] This structure allows the crushing roller 30 to perform shearing and crushing operations intermittently, making it suitable for powders mixed with a small amount of agglomerates. Furthermore, this structure ensures that the power of the drum frame 12 is directly transmitted to the crushing roller 30. The transmission mechanism 40 employed occupies a small space, making it suitable for small-sized swing-type pellet mills 10. It also avoids the need for additional drive, reducing costs.

[0066] In some embodiments, another embodiment of the transmission mechanism 40 may be as follows: Figure 2 、 Figure 4 and Figure 5 The structure shown. Figure 2 、 Figure 4 and Figure 5 The transmission mechanism 40 includes, in addition to the drive gear 41, the transmission gear 42, the first pulley 43, the first one-way bearing 44, and the first transmission belt 45, a second pulley 46, a second one-way bearing 47, and a second transmission belt 48. The second pulley 46 is coaxially arranged with the rotation axis of the other crushing roller 30. The second one-way bearing 47 is disposed between the second pulley 46 and the rotation axis of the corresponding crushing roller 30. One end of the second transmission belt 48 is sleeved on the first pulley 43, and the other end is sleeved on the second pulley 46.

[0067] The specific working method in this embodiment is:

[0068] When the drum frame 12 rotates forward, the first drive belt 45 drives the first pulley 43 to rotate forward. The first pulley 43 drives the corresponding crushing roller 30 shaft to rotate forward through the first one-way bearing 44. Then, through the two drive gears 42, it drives the other crushing roller 30 to rotate in the opposite direction. The forward-rotating crushing roller 30 and the reverse-rotating crushing roller 30 form relative rotation, thereby achieving shear crushing of the agglomerated powder. During this process, the first pulley 43 drives the second pulley 46 to rotate forward through the second drive belt 48. At this time, the second pulley 46 and the corresponding crushing roller 30 rotate in opposite directions, and the second one-way bearing 47 can just accommodate this rotation.

[0069] When the drum frame 12 rotates in the reverse direction, the second transmission belt 48 drives the first pulley 43 to rotate in the reverse direction, and the second pulley 46 cannot transmit power to the corresponding crushing roller 30. However, the first pulley 43 can drive the second pulley 46 to rotate in the reverse direction through the second transmission belt 48. At this time, the second pulley 46 can drive the corresponding crushing roller 30 to rotate in the reverse direction through the second one-way bearing 47, and then drive the other crushing roller 30 to rotate in the forward direction through the transmission gear 42. The forward-rotating crushing roller 30 rotates in the opposite direction to the first pulley 43, and the first one-way bearing 44 can just accommodate this rotation.

[0070] Specifically, each crushing roller 30 also rotates relative to each other during the reverse rotation of the drum frame 12, so as to ensure that as the drum frame 12 rotates back and forth, the two crushing rollers 30 continue to rotate relative to each other, thereby performing continuous cutting and crushing operations. This structure allows the shearing and crushing operations of the crushing rollers 30 to be continuous, and can be used for powder materials mixed with a large amount of agglomerates. In addition, this structure can ensure that the power of the drum frame 12 is directly transmitted to the crushing rollers 30. The transmission mechanism 40 used takes up less space and can adapt to this small swing-type granulator 10. It can also avoid additional drives and reduce costs. By setting up this transmission mechanism 40, the relative rotation of the crushing rollers 30 can be effectively guaranteed, thereby ensuring the treatment effect of agglomerated powder materials, and it is highly practical.

[0071] Of course, in this embodiment, each crushing roller can be converted into an intermittent crushing working mode. Specifically, the second transmission belt 48 can be directly disassembled, and the switching is convenient.

[0072] In some embodiments, the transmission mechanism 40 may be configured as follows: Figure 2 The structure shown. Figure 2The first pulley 43 is provided with two annular grooves 431 for the first transmission belt 45 and the second transmission belt 48 to be mounted respectively. The setting of the two annular grooves 431 can avoid interference between the first transmission belt 45 and the second transmission belt 48, thereby ensuring the transmission effect and the stability of the crushing work.

[0073] In some embodiments, the driving gear 41 may be Figure 2 、 Figure 4 and Figure 5 The structure shown. Figure 2 、 Figure 4 and Figure 5 A tensioning pulley 49 is provided between the two driving gears 41 to tighten the second transmission belt 48. The setting of the tensioning pulley 49 can increase the tensioning force of the second transmission belt 48 to ensure the transmission effect, and at the same time can also avoid interference between the second transmission belt 48 and the transmission gear 42.

[0074] In some embodiments, the above-mentioned frame 20 can be constructed as follows: Figure 4 The structure shown. Figure 4 A guide ramp 22 is provided in the through cavity. Two guide ramps 22 are provided. The two guide ramps 22 are located on both sides of the two crushing rollers 30 along the second direction and below each inclined screen plate 50. A space for powder to pass through is defined between the bottom end of each guide ramp 22 and the corresponding crushing roller 30.

[0075] The provision of the two guide inclined plates 22 can shield the through cavity to a certain extent, thereby preventing the powder falling on the bottom of the hopper 11 from splashing and dust overflowing, thereby ensuring the surrounding environment.

[0076] In some embodiments, see Figures 2 to 4 The top end of each inclined screen plate 50 is rotatably connected to the mounting frame 20, with the rotation axis arranged along the first direction. The bottom end of the inclined screen plate 50 extends obliquely downward toward the corresponding crushing roller 30. The rotatable connection between the inclined screen plate 50 and the mounting frame 20 ensures that the inclined screen plate 50 can be tilted and tilted. This structure allows the angle of the inclined screen plate 50 to be adjusted, facilitating the downward movement of agglomerated powder.

[0077] The pre-crushing swing-type granulator also includes two linkage structures 60, each corresponding to one of the two crushing rollers 30 and connected to the two inclined screen plates 50. After the two crushing rollers 30 rotate, the two linkage structures 60 can drive the two inclined screen plates 50 to perform a reciprocating pitching and swinging motion. The linkage structures 60 can be connected to the inclined screen plates 50, driving the inclined screen plates 50 to perform a reciprocating pitching and swinging motion. The vibration generated by the inclined screen plates 50 can, to a certain extent, impart a certain impact force to agglomerated powder, promoting the direct crushing of loosely agglomerated powder. At the same time, the continuous vibration process can also promote the rapid sliding of agglomerated powder into the shearing position 31, thereby improving feeding efficiency.

[0078] In some embodiments, the linkage structure 60 may be configured as follows: Figure 2 and Figure 3 The structure shown. Figure 2 and Figure 3 Each linkage structure 60 includes an eccentric 61, a connecting shaft 63, and a connecting rod 64. The eccentric 61 is coaxially connected to the rotating shaft of the corresponding crushing roller 30. The eccentric 61 is provided with a connecting post 62 spaced parallel to and spaced from the rotating shaft of the corresponding crushing roller 30. The connecting shaft 63 is arranged along a first direction and connected to the bottom end of the inclined screen plate 50. The end of the connecting shaft 63 extends out of the side wall of the erection frame 20. One end of the connecting rod 64 is rotatably connected to the connecting post 62, and the other end is rotatably connected to the end of the connecting shaft 63.

[0079] The side wall of the erection frame 20 is provided with an arc-shaped long opening 21 for the connecting shaft 63 to slide.

[0080] The eccentric wheel 61 rotates with the rotating shaft of the crushing roller 30, and drives the pull rod through the circular motion of the connecting column 62, and then drives the inclined screen plate 50 where the connecting shaft 63 is located to pitch and swing through the pull rod. It has a simple structure, occupies a small space, and has a high space utilization rate. It can adapt to a small swing-type pellet machine 10 with a simple structure and strong practicality.

[0081] In some embodiments, the mounting frame 20 is provided with a fixed shaft for rotationally connecting the top end of the inclined screen plate 50. The inclined screen plate is slidably connected to the fixed shaft in a first direction. In the first direction, the width of the inclined screen plate 50 is slightly smaller than the width of the through-hole. Accordingly, each eccentric wheel 61 is provided with a connecting column 62 on the outward-facing surface, and a protrusion may be provided on the inward-facing surface. Multiple protrusions are provided, each of which is annularly spaced around the rotating shaft of the crushing roller 30. The eccentric wheel 61 is connected to the corresponding rotating shaft of the crushing roller 30 using a key, and a limit plate is provided at the outer end of the rotating shaft of the crushing roller 61 to limit the position of the eccentric wheel 61. A spring is provided between the limit plate and the eccentric wheel. A plurality of arc blocks corresponding to the protrusions are provided on the outer wall (bottom of the circular groove) of the erection frame 20 corresponding to the eccentric wheel 61. As the eccentric wheel 61 rotates, the protrusions contact the arc blocks respectively and are rebounded in the opposite direction by the spring, so that the eccentric wheel 61 continuously moves back and forth in the first direction, and then the eccentric wheel 61 drives the inclined screen plate 50 to move back and forth, so that the inclined screen plate 50 moves back and forth in the first direction at the same time during the pitch rotation process, further ensuring the screening effect, and then ensuring the pretreatment effect of the agglomerated material.

[0082] In some embodiments, the transmission mechanism 40 and the linkage structures 60 may be configured as follows: Figure 2 and Figure 3 The structure shown. Figure 2 and Figure 3 The transmission mechanism 40 and each linkage structure 60 are respectively located on both sides of the erection frame 20 along the first direction. This structure can ensure the utilization of space and also avoid interference.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pre-crushable oscillating pellet mill, comprising a hopper with an open top and a reciprocating roller frame located at the bottom of the hopper; characterized in that: The axis direction of the drum frame is set as a first direction, and the horizontal direction perpendicular to the first direction is set as a second direction; the pre-crushing swing granulator also includes: A frame is provided on the top of the hopper and has a vertically arranged through cavity; There are two crushing rollers, both of which are located in the through cavity and are rotatably connected to the erection frame. Both of the crushing rollers are arranged along the first direction, and a shearing position for crushing bulk powder is formed between the two crushing rollers; The transmission mechanism is connected to the end of the drum frame and the crushing roller, respectively, for transmitting the power of the drum frame to the two crushing rollers; the transmission mechanism includes a driving gear, a transmission gear, a first pulley, a first one-way bearing, a first transmission belt, a second pulley, a second one-way bearing, and a second transmission belt; there are two driving gears, both of which are located outside the erection frame and are coaxially connected to the rotating shafts of the two crushing rollers; there are two transmission gears, which are meshed with each other and are located between the two driving gears and meshed with the two driving gears respectively; the first pulley is coaxially arranged with the rotating shaft of one of the crushing rollers; the first one-way bearing is arranged between the first pulley and the corresponding The first transmission belt is sleeved on the first pulley and the other end is sleeved on the disc at the end of the drum frame, so as to transmit the power of the drum frame to the first pulley; the second pulley is coaxially arranged with the rotating shaft of the other crushing roller; the second one-way bearing is arranged between the second pulley and the rotating shaft corresponding to the crushing roller; one end of the second transmission belt is sleeved on the first pulley and the other end is sleeved on the second pulley; the rotation direction of the drum frame is set to be forward and reverse respectively, and when the block powder is sheared, the rotation of the two crushing rollers is set to be relative rotation; each crushing roller rotates relative to each other during the forward rotation or reverse rotation of the drum frame; There are two inclined screen plates, which are located on both sides of the through cavity along the second direction; each inclined screen plate is provided with a plurality of long screen openings for screening non-caking powder; a material conveying channel is formed between the two inclined screen plates and is located directly above the shearing position.

2. The pre-crushable oscillating granulator according to claim 1, characterized in that: The shearing position is located in the middle of the through cavity along the second direction.

3. The pre-crushable oscillating granulator according to claim 1, characterized in that: The first pulley is provided with two annular grooves for the first transmission belt and the second transmission belt to be respectively sleeved.

4. The pre-crushable oscillating granulator according to claim 1, characterized in that: A tensioning wheel for tightening the second transmission belt is provided between the two driving gears.

5. The pre-crushable oscillating granulator according to any one of claims 1 to 4, characterized in that: A guide inclined plate is provided in the through cavity, and two guide inclined plates are provided. The two guide inclined plates are respectively located on both sides of the two crushing rollers along the second direction and below each inclined screen plate; there is an interval space for powder to pass between the bottom end of each guide inclined plate and the corresponding crushing roller.

6. The pre-crushable oscillating granulator according to any one of claims 1 to 4, characterized in that: The top end of each inclined screen plate is rotatably connected to the erection frame, and the rotation axis is arranged along the first direction; the bottom end of the inclined screen plate extends obliquely downward toward the corresponding crushing roller; The pre-crushing swing-type pellet mill also includes a linkage structure, and two linkage structures are provided. The two linkage structures correspond to the two crushing rollers one by one, and are connected to the two inclined screen plates. The two linkage structures are used to drive the two inclined screen plates to swing back and forth after the two crushing rollers rotate.

7. The pre-crushable oscillating granulator according to claim 6, characterized in that: Each of the linkage structures comprises: An eccentric wheel is coaxially connected to the rotating shaft of the corresponding crushing roller, and the eccentric wheel is provided with a connecting column arranged parallel to the rotating shaft of the corresponding crushing roller at intervals; a connecting shaft, arranged along the first direction and connected to the bottom end of the inclined screen plate, with an end of the connecting shaft extending out of the side wall of the erection frame; A connecting rod, one end of which is rotatably connected to the connecting column and the other end of which is rotatably connected to the end of the connecting shaft Wherein, an arc-shaped long strip opening for the sliding of the connecting shaft is provided on the side wall of the erection frame.

8. The pre-crushable oscillating granulator according to claim 6, characterized in that: The transmission mechanism and the linkage structures are respectively located on both sides of the erection frame along the first direction.

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