Circulating calendaring granulation device

Abstract

The invention relates to a circulating calendaring granulation device, and relates to the field of granulator equipment, the circulating calendaring granulation device comprises a material distributing mechanism, a circulating conveying mechanism and a feeding mechanism, the material distributing mechanism is installed below a cutter mechanism, the material distributing mechanism comprises a limiting seat, a limiting air cylinder and a first material distributing disc, the limiting seat is provided with a sliding groove in the length direction, and the limiting air cylinder is arranged in the sliding groove; the limiting air cylinder is installed at the upper end of the limiting base, a piston rod of the limiting air cylinder faces the interior of the sliding groove, a limiting block is arranged on the piston rod of the limiting air cylinder, a first sliding block is installed on the lower plate face of the first distributing disc and slidably connected into the sliding groove, the limiting block can extrude the first sliding block to move, and a first limiting spring is arranged on the first sliding block. The side, deviating from the first sliding block, of the first limiting spring is connected with the side wall of the sliding groove, first screening holes are formed in the first material distribution disc, the circulating material distribution mechanism is installed at the discharging end of the first material distribution disc, and the feeding mechanism is installed below the first material distribution disc. The method has the effect of reducing waste of production raw materials.

Description

Technical Field

[0001] The present application relates to the field of granulator equipment, and in particular to a circulating calendering granulator. Background Art

[0002] At present, in the granulation technology of powder materials, the traditional granulation methods mainly include spray drying granulation, extrusion granulation, drum granulation and other methods. These methods have their own characteristics. For example, spray drying granulation can realize continuous operation, but the equipment cost is high and the energy consumption is large; although the investment of extrusion granulation is small, the granulation efficiency is low and the product quality is difficult to control. In recent years, with the promotion of industry and the advancement of technology, the market demand for improving granulation efficiency, reducing energy consumption and improving product quality has increased, which has prompted the research and development of new technologies and new equipment.

[0003] In response to the above needs, the improvement measures available on the market mainly include using new high-efficiency mixers to improve the uniformity of raw materials, improving particle size distribution by adjusting the gap between rollers, and introducing automated control systems to improve the intelligence level of the entire system.

[0004] For example, Chinese Patent 202011234307.X discloses a calendering granulator, comprising a frame, on which a rolling mechanism is arranged, the rolling mechanism comprising a first extrusion roller and a second extrusion roller, wherein the roller surface of the first extrusion roller is evenly distributed with a plurality of first extrusion grooves, each of which extends along the axial length direction of the roller surface and penetrates through the two end surfaces of the roller surface; a forming ring is also respectively arranged on the two end surfaces of the first extrusion roller, and a discharge hole is arranged on the forming ring, and the discharge hole is connected with the first extrusion groove; the roller surface of the second extrusion roller is evenly distributed with a plurality of second extrusion grooves, each of which is distributed along the axial length direction of the roller surface, and both ends of the second extrusion groove are blocked, and a cutting mechanism is arranged at the discharge hole of the forming ring; the cross-section of the first extrusion groove is U-shaped, and the cross-section of the second extrusion groove is a triangular structure; the first extrusion roller and the second extrusion roller are both heatable structures; the cutting mechanism comprises a knife frame and a blade , the blade is arranged on the knife holder, and the blade is driven to rotate by the blade driving mechanism; one end of the knife holder is connected to the frame and can rotate around its connection part, and a limit mechanism for limiting the rotation angle of the knife holder is also arranged on the frame; a tension spring is also arranged on the knife holder and connected to the frame; the distance between the blade of the cutting mechanism and the end face of the forming ring is 1-3mm; a material guide trough is arranged under each cutting mechanism, and the discharge port of one material guide trough is connected to the conveyor belt structure through a vibrating material guide trough, and the discharge port of the other material guide trough is directly connected to the conveyor belt structure; the second extrusion roller is installed on the second bearing seat, and the second bearing seat is a movable mechanism; a driving mechanism is arranged on the frame, and the driving mechanism is connected to the second bearing seat to drive the second bearing seat to translate along the frame; a guide roller is arranged between the bottom of the second bearing seat and the frame, and a displacement sensor is arranged on the second bearing seat. Because it adopts a single molding method after processing, once the molding fails or the quality does not meet the standard, it is necessary to re-feed, resulting in serious waste of raw materials. Summary of the invention

[0005] In order to reduce the waste of raw materials in production, the present application provides a circulating calendering granulation device.

[0006] The present application provides a circulating calendering granulation device adopts the following technical solution: A circulating calendering granulation device comprises a frame, a driving mechanism and a rolling mechanism, wherein the driving mechanism, the feeding mechanism, the rolling mechanism and the cutting mechanism are mounted on the frame, wherein the driving mechanism is used to drive the rolling mechanism, the feeding mechanism is mounted on the rolling mechanism and is used to feed materials into the rolling mechanism, the cutting mechanism is mounted at the discharge port of the rolling mechanism, and further comprises a material dividing mechanism, a circulating conveying mechanism and a feeding mechanism, wherein the material dividing mechanism is mounted below the cutting mechanism, the material dividing mechanism comprises a limit seat, a limit cylinder and a first material dividing plate, the limit seat is provided with a slide groove along the length direction, and the A limit cylinder is installed at the upper end of the limit seat, and the piston rod is set toward the slide groove. A limit block is arranged on the piston rod of the limit cylinder. A first sliding block is installed on the lower plate surface of the first material distribution tray. The first sliding block is slidably connected in the slide groove. The limit block can squeeze the first sliding block to make it move. A first limit spring is arranged on the first sliding block. The first limit spring is connected to the side wall of the slide groove away from the first sliding block. A first screening hole is arranged on the first material distribution tray. The circulating material distribution mechanism is installed at the discharge end of the first material distribution tray, and the feeding mechanism is installed below the first material distribution tray.

[0007] By adopting the above technical scheme, the limit cylinder is installed in the limit seat, and the limit cylinder drives the limit block to move into the slide groove. The limit block pushes the first sliding block installed on the first material distribution plate to slide in the slide groove and squeezes the first limit spring installed in the slide groove. When the limit cylinder is reset, the first sliding block is reset under the action of the first limit spring, so that the limit cylinder drives the limit block to move back and forth, thereby realizing the first material distribution plate to screen the particles, so that the particles with smaller particle size fall from the screening hole to the feeding mechanism, and the particles with larger particle size are circulated from one end of the first material distribution plate to the material distribution mechanism, and are put into the feeding mechanism for processing again, thereby avoiding the waste of raw materials.

[0008] In a specific feasible implementation scheme, it also includes a second material distribution tray, a second slider is installed on the lower plate surface of the second material distribution tray, the second slider is slidably connected in the slide groove, the limit block is located in the middle part of the first limit block and the second limit block, the second material distribution tray is located below the first material distribution tray, a second limit spring is arranged on the second limit block, the second limit spring is connected to the side wall of the slide groove at one end away from the second slider, the first limit spring and the second limit spring are symmetrically installed relative to the limit block, and a second screening hole is arranged on the second material distribution tray.

[0009] By adopting the above technical solution, the second dividing plate is installed below the first dividing plate, and the pellets sifted out from the first dividing plate enter the second dividing plate. The second dividing plate sieves the pellets again, so that the pellets with too small particle size are sifted into the circulating dividing mechanism, and the pellets with moderate particle size are sifted into the feeding mechanism, thereby further ensuring the utilization of raw materials.

[0010] In a specific possible implementation manner, the first material distribution tray and the second material distribution tray are arranged at an angle, and the first material distribution tray and the second material distribution tray are arranged in opposite directions of inclination, the circulating conveying mechanism is installed at the lower end of the second material distribution tray, and the feeding mechanism is installed at the lower end of the first material distribution tray.

[0011] By adopting the above technical solution, the first material distribution plate and the second material distribution plate are inclined, and the inclination directions of the two are opposite, the circulating conveying mechanism is installed at the lower end of the second material distribution plate, and the feeding mechanism is installed at the lower end of the first material distribution plate, so as to avoid the particles with moderate particle size and the particles with larger particle size having the same discharge direction, resulting in the particles being mixed again.

[0012] In a specific possible implementation scheme, it further includes a collecting hopper, which is installed on the circulating conveying mechanism, and is located below the second material distribution tray, and can collect materials screened out from the lower end of the first material distribution tray.

[0013] By adopting the above technical solution, the collecting hopper is installed on the circulating conveying mechanism, the collecting hopper is located below the second distributing plate, and can collect the material screened out from the lower end of the first distributing plate, so as to facilitate the collection and cyclic calendering of particles with smaller and larger particle sizes at the same time.

[0014] In a specific feasible implementation scheme, two limit seats are provided, and the two limit seats are respectively installed on both sides of the first material distribution plate, and two first sliding blocks are provided and installed in corresponding positions, and the two first sliding blocks are respectively slidably connected to the limit seats on both sides.

[0015] By adopting the above technical solution, two limit seats are provided, the two limit seats are installed on both sides of the first material distribution plate, and two first sliding blocks are correspondingly provided, thereby ensuring the stability of the first material distribution plate when screening materials.

[0016] In a specific possible implementation manner, the feeding mechanism includes a support frame and a feeding bin, the support frame is mounted on the frame, the feeding bin is mounted on the frame, and the feeding bin discharge port is located above the rolling mechanism.

[0017] In a specific possible implementation scheme, it also includes a stirring mechanism, which includes a stirring motor and a stirring roller. The stirring roller is rotatably connected in the loading bin, the stirring motor is installed on the side wall of the loading bin, and the output shaft is connected to the stirring roller. The stirring roller is equipped with a stirring blade.

[0018] By adopting the above technical solution, the stirring roller is rotatably connected in the feeding silo, the stirring motor is installed on the side wall of the feeding silo, and the output shaft is connected to the stirring roller, so that the stirring motor drives the stirring roller to rotate, and the materials of different components are fully mixed to ensure that the materials have a uniform distribution of components before entering the calendering and extrusion process. At the same time, it can prevent the materials from stratifying in the feeding silo, ensuring the consistent quality of each batch of materials.

[0019] In a specific implementation manner, the stirring blades are provided in plurality, and the plurality of stirring blades are dispersedly installed on the circumferential portion of the stirring roller.

[0020] In a specific possible implementation scheme, the circulating conveying mechanism includes a conveyor belt structure and a circulation bin, the conveyor belt structure is installed at the discharge end of the first material distribution plate, and the circulation bin is installed at the discharge end of the conveyor belt structure.

[0021] In a specific possible implementation scheme, it also includes a circulation pipe and a fan, the circulation pipe is connected to the circulation bin, the fan is installed on the circulation pipe, and the end of the circulation pipe facing away from the circulation bin is connected to the feeding mechanism and can fill the feeding mechanism.

[0022] By adopting the above technical solution and setting up the circulation pipe, the fan draws air, thereby sucking the pellets stored in the circulation bin into the loading bin, thereby improving the convenience of circulation loading.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The limit cylinder is installed in the limit seat, and the limit cylinder drives the limit block to move into the slide groove. The limit block pushes the first sliding block installed on the first distribution plate to slide in the slide groove and squeezes the first limit spring installed in the slide groove. When the limit cylinder is reset, the first sliding block is reset under the action of the first limit spring, so that the limit cylinder drives the limit block to move back and forth, thereby realizing the first distribution plate to screen the granular materials, so that the granular materials with smaller particle sizes fall from the screening holes to the feeding mechanism, and the granular materials with larger particle sizes are circulated from one end of the first distribution plate to the distribution mechanism, and are put into the feeding mechanism for processing again, thereby avoiding the waste of raw materials; 2. The second material distribution plate is installed below the first material distribution plate. The pellets screened from the first material distribution plate enter the second material distribution plate. The second material distribution plate screens the pellets again, so that the pellets with too small particle size are screened into the circulating material distribution mechanism, and the pellets with moderate particle size are screened into the feeding mechanism, thereby further ensuring the utilization of raw materials; 3. The stirring roller is rotatably connected in the feeding bin, the stirring motor is installed on the side wall of the feeding bin, and the output shaft is connected to the stirring roller, so that the stirring motor drives the stirring roller to rotate, and the materials of different components are fully mixed to ensure that the materials have a uniform distribution of components before entering the calendering and extrusion process. At the same time, it can prevent the materials from stratifying in the feeding bin to ensure the consistent quality of each batch of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0025] Figure 2 It is a structural diagram of the feeding mechanism.

[0026] Figure 3 It is a structural schematic diagram of the material distribution mechanism in the embodiment of the present application.

[0027] Figure 4 A cross-sectional view showing the internal structure of the limit seat.

[0028] Explanation of the accompanying drawings: 1. frame; 2. driving mechanism; 21. first main motor; 22. second main motor; 3. rolling mechanism; 31. first extrusion roller; 32. second extrusion roller; 4. cutting knife mechanism; 5. material dividing mechanism; 51. limiting seat; 52. limiting cylinder; 521. limiting block; 53. first material dividing plate; 531. first slider; 532. first limiting spring; 533. first sieve hole; 54. second material dividing plate; 541. second slider; 542. second limiting spring; 543. second sieve hole; 6. circulating conveying mechanism; 61. conveyor belt mechanism; 7. feeding mechanism; 8. loading mechanism; 81. supporting frame; 82. loading bin; 83. stirring device; 831. stirring motor; 832. stirring roller; 833. stirring blade; 9. fan; 10. circulating pipe. DETAILED DESCRIPTION

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The embodiment of the present application discloses a circulating calendering granulation device.

[0031] like Figure 1 As shown, the cyclic calendering granulation device includes a frame 1, a driving mechanism 2, a roller pressing mechanism 3, a material dividing mechanism 5, a cyclic conveying mechanism 6 and a feeding mechanism 7. The driving mechanism 2 and the roller pressing mechanism 3 are both installed on the frame 1, and the driving mechanism 2 is connected to the roller pressing mechanism 3. The driving mechanism 2 drives the roller pressing mechanism 3 to calender the raw materials. A cutter mechanism 4 is installed on the frame 1, and the cutter mechanism 4 is installed at the discharge ports at both ends of the roller pressing mechanism 3. The cutter mechanism 4 is used to cut the calendered materials. A guide plate is installed below the cutter mechanism 4. The material dividing mechanism 5 is installed at the discharge port of the guide plate. The feeding mechanism 7 is used to transport qualified materials after calendering and cutting for the next step of processing. The cyclic conveying mechanism 6 is used to recover and convey unqualified pellets screened by the material dividing mechanism 5 to the feeding mechanism 8, and the pellets are calendered and cut again.

[0032] The rolling mechanism 3 includes a first squeezing roller 31 and a second squeezing roller 32. Both ends of the first squeezing roller 31 are mounted on the frame 1 through a first bearing seat, and both ends of the second squeezing roller 32 are fixed to the frame 1 through a second bearing seat. Since the first squeezing roller 31 and the second squeezing roller 32 are both heavy, lubricating oil needs to be passed through the first bearing seat and the second bearing seat for lubrication.

[0033] The driving mechanism 2 includes a first main motor 21 and a second main motor 22. The first main motor 21 is connected to the first squeezing roller 31 through a main universal coupling to drive the first squeezing roller 31 to rotate. The second main motor 22 is connected to the second squeezing roller 32 through a main universal coupling to drive the second squeezing roller 32 to rotate. The first squeezing roller 31 and the second squeezing roller 32 rotate in opposite directions.

[0034] It also includes a feeding mechanism 8, which includes a support frame 81 and a feeding bin 82. The support frame 81 is installed on the support frame 81, and the feeding bin 82 is installed on the upper end of the support frame 81. The feeding bin 82 is located above the first extrusion roller 31 and the second extrusion roller 32. The feeding bin 82 is preferably configured as a hopper, and the discharge port of the feeding bin 82 is located in the middle of the first extrusion roller 31 and the second extrusion roller 32.

[0035] In the embodiment of the present application, a stirring device 83 is also included. The stirring device 83 includes a stirring motor 831 and a stirring roller 832. The stirring roller 832 is rotatably connected to the upper bin 82 and is installed at the discharge port. The stirring roller 832 is installed along the length direction of the first extrusion roller 31 and the second extrusion roller 32. The stirring motor 831 is installed on the side wall of the upper bin 82. The output shaft of the stirring motor 831 is connected to the stirring roller 832. A stirring blade 833 is installed on the stirring roller 832. The shape and arrangement of the blade can be optimized according to the material characteristics. The stirring blade 833 can be in the shape of a paddle, a spiral, a turbine, etc. There are several stirring blades 833, and several stirring blades 833 are dispersedly installed on the circumferential part of the stirring roller 832. The stirring motor 831 drives the stirring roller 832 to rotate, so that materials of different components are fully mixed, ensuring that the materials have a uniform distribution of components before entering the calendering and extrusion process. At the same time, it can prevent the materials from being stratified in the feed bin, ensuring the consistency of the quality of each batch of materials.

[0036] like Figure 3 and Figure 4 As shown, the distributing mechanism 5 includes a limit seat 51, a limit cylinder 52, a first distributing plate 53 and a second distributing plate 54. The limit seat 51 and the limit cylinder 52 are both provided with two, and the two limit seats 51 are installed side by side. A slide groove is provided on the limit seat 51, and the slide groove penetrates the upper side wall of the limit seat 51. The limit cylinder 52 is installed on the upper end surface of the limit seat 51, and the piston rod of the limit cylinder 52 is arranged toward the slide groove. A limit block 521 is installed on the piston rod of the limit cylinder 52. The shape of the limit block 521 is set to be trapezoidal. In other embodiments, it can also be set to other shapes such as semicircular and arc. The two oblique sides of the limit block 521 are arranged relative to the length direction of the slide groove. The lower end surface of the first distributing plate 53 corresponds to the two limit seats 51 and is installed with two first sliding blocks 531. Two second sliding blocks 541 are installed on the lower end faces of the two limiting seats 51 corresponding to the second material distribution plate 54, and the second material distribution plate is located below the first material distribution plate, and the first sliding block 531 and the second sliding block 541 are symmetrically installed in the slide groove along the height direction of the limiting block 521, and the adjacent side walls of the first sliding block 531 and the second sliding block 541 are set as inclined surfaces corresponding to the limiting block 521, and the first limiting spring 532 and the second limiting spring 542 are installed on the side walls of the first sliding block 531 and the second sliding block 541 opposite to each other, respectively, and the first limiting spring 532 and the second limiting spring 542 are installed along the length direction of the slide groove, and the first limiting spring 532 and the second limiting spring 542 are fixedly connected to the side walls of the slide groove on the adjacent first sliding block 531 and the second sliding block 541 respectively.

[0037] The limiting cylinder 52 is installed in the limiting seat 51, and the limiting cylinder 52 drives the limiting block 521 to move into the slide groove. The limiting block 521 pushes the first sliding block 531 installed on the first material distribution plate 53 to slide in the slide groove and squeeze the first limiting spring 532 installed in the slide groove. When the limiting cylinder 52 is reset, the first sliding block 531 is reset under the action of the first limiting spring 532, so that the limiting cylinder 52 drives the limiting block 521 to move back and forth, thereby realizing the first material distribution plate 53 to screen the granular materials, so that the granular materials with smaller particle sizes fall from the screening holes to the On the second dividing plate 54, the particles with larger particle sizes are sieved from one end of the first dividing plate 53 to the circulating dividing mechanism 5, and are put into the feeding mechanism 8 for processing again. The particles that fall onto the second dividing plate 54 are sieved again, and the particles with moderate particle sizes are sieved from the discharge port of the second dividing plate 54 to the feeding mechanism 7 and are collected to enter the next processing procedure. The particles with smaller particle sizes fall from the sieve holes into the circulating dividing mechanism 5, and are put into the feeding mechanism 8 for processing again, thereby further ensuring the utilization of raw materials and avoiding waste of raw materials.

[0038] The first material dividing disc 53 is provided with a first screening hole, and the second material dividing disc 54 is provided with a second screening hole. The first screening hole is provided on the plate surface of the first material dividing disc 53 on the side away from the first limiting spring 532, and the plate surface of the first material dividing disc 53 adjacent to the first limiting spring 532 is set as a solid plate surface. The second screening hole is provided on the plate surface of the second material dividing disc 54 on the side away from the second limiting spring 542, and the plate surface of the second material dividing disc 54 adjacent to the second limiting spring 542 is set as a solid plate surface. The area ratio between the perforated surface and the non-perforated surface on the first material dividing disc 53 and the second material dividing disc 54 is set within the range of 1:3-1:4.

[0039] In the embodiment of the present application, the first material distribution tray 53 and the second material distribution tray 54 are arranged at an angle, and the first material distribution tray 53 and the second material distribution tray 54 are arranged in opposite directions of inclination, and the inclination angle is usually set between 10° and 15°. The circulating conveying mechanism 6 is installed at the lower end of the second material distribution tray 54, and the feeding mechanism 7 is installed at the lower end of the first material distribution tray 53.

[0040] The first material distribution tray 53 and the second material distribution tray 54 are tilted, and the tilt directions of the two are opposite. The circulating conveying mechanism 6 is installed at the lower end of the second material distribution tray 54, and the feeding mechanism 7 is installed at the lower end of the first material distribution tray 53, so as to avoid the particles with moderate particle size and the particles with larger particle size having the same discharge direction, resulting in the re-mixing of particles of different particle sizes.

[0041] The circulating conveying mechanism 6 includes a conveyor belt structure and a circulation bin. The conveyor belt structure is installed at one end of the discharge port of the first discharge tray, and the circulation bin is installed on the conveyor belt structure. The feed port of the circulation bin is arranged below the second discharge tray, and can collect the granular materials sieved out of the discharge port of the first discharge tray. The feeding mechanism 7 and the conveyor belt structure can adopt the same conveyor belt device. The conveyor belt device is preferably arranged to be a common conveyor belt on the market, and the feeding mechanism 7 is installed at the discharge port of the second discharge tray.

[0042] In the embodiment of the present application, it also includes a circulation pipe 10 and a fan 9. The circulation pipe 10 is connected to the circulation bin, and the fan 9 is installed on the circulation pipe 10. The end of the circulation pipe 10 away from the circulation bin is connected to the upper bin 82 and can fill the upper bin 82.

[0043] The implementation principle of a cyclic calendering granulation device in the embodiment of the present application is as follows: the limit cylinder 52 is installed in the limit seat 51, the limit cylinder 52 drives the limit block 521 to move into the slide groove, the limit block 521 pushes the first sliding block 531 installed on the first material distribution plate 53 to slide in the slide groove and squeeze the first limit spring 532 installed in the slide groove, when the limit cylinder 52 is reset, the first sliding block 531 is reset under the action of the first limit spring 532, so that the limit cylinder 52 drives the limit block 521 to move back and forth, so as to realize the first material distribution plate 53 to screen the granules, so that the particle size is smaller. The particles of medium size fall from the sieve holes onto the second dividing plate 54, the particles with larger particle sizes are sieved from one end of the first dividing plate 53 to the circulating dividing mechanism 5, and are put into the feeding mechanism 8 for processing again, the particles sieved onto the second dividing plate 54 are sieved again, the particles with moderate particle sizes are sieved from the discharge port of the second dividing plate 54 to the feeding mechanism 7 and are collected to enter the next processing procedure, the particles with smaller particle sizes fall from the sieve holes to the circulating dividing mechanism 5, and are put into the feeding mechanism 8 for processing again, thereby further ensuring the utilization of raw materials and avoiding waste of raw materials.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cyclic calendering granulation device, comprising a frame (1), a driving mechanism (2) and a rolling mechanism (3), wherein the driving mechanism (2), a feeding mechanism (8), the rolling mechanism (3) and a cutting mechanism (4) are mounted on the frame (1), the driving mechanism (2) is used to drive the rolling mechanism (3), the feeding mechanism (8) is mounted on the rolling mechanism (3) and is used to feed materials into the rolling mechanism (3), and the cutting mechanism (4) is mounted at the discharge port of the rolling mechanism (3), characterized in that: The invention also comprises a material distribution mechanism (5), a circulating conveying mechanism (6) and a feeding mechanism (7). The material distribution mechanism (5) is installed below the cutting knife mechanism (4). The material distribution mechanism (5) comprises a limit seat (51), a limit cylinder (52) and a first material distribution plate (53). The limit seat (51) is provided with a slide groove along the length direction. The limit cylinder (52) is installed at the upper end of the limit seat (51), and the piston rod is arranged toward the slide groove. A limit block (521) is arranged on the piston rod of the limit cylinder (52). A first sliding block (521) is installed on the lower plate surface of the first material distribution plate (53). 531), the first slider (531) is slidably connected in the slide groove, the limit block (521) can squeeze the first slider (531) to make it move, the first slider (531) is provided with a first limit spring (532), the first limit spring (532) is connected to the side wall of the slide groove away from the first slider (531), the first distribution plate (53) is provided with a first sieve hole, the circulating distribution mechanism (5) is installed at the discharge end of the first distribution plate (53), and the feeding mechanism (7) is installed below the first distribution plate (53).

2. The circulating calendering granulation device according to claim 1, characterized in that: It also includes a second material distribution plate (54), a second slider (541) is installed on the lower plate surface of the second material distribution plate (54), the second slider (541) is slidably connected in the slide groove, the limit block (521) is located in the middle of the first limit block (521) and the second limit block (521), the second material distribution plate (54) is located below the first material distribution plate (53), the second limit block (521) is provided with a second limit spring (542), the second limit spring (542) is connected to the side wall of the slide groove at one end away from the second slider (541), the first limit spring (532) and the second limit spring (542) are symmetrically installed relative to the limit block (521), and the second material distribution plate (54) is provided with a second screening hole.

3. The cyclic calendering granulation device according to claim 2, characterized in that: The first material distribution plate (53) and the second material distribution plate (54) are arranged at an inclination, and the first material distribution plate (53) and the second material distribution plate (54) are arranged in opposite inclination directions. The circulating conveying mechanism (6) is installed at the lower end of the second material distribution plate (54), and the feeding mechanism (7) is installed at the lower end of the first material distribution plate (53).

4. The cyclic calendering granulation device according to claim 3 is characterized in that: It also includes a collecting hopper, which is installed on the circulating conveying mechanism (6). The collecting hopper is located below the second material distribution plate (54) and is capable of collecting materials screened out from the lower end of the first material distribution plate (53).

5. The circulating calendering granulation device according to claim 1, characterized in that: Two limit seats (51) are provided, and the two limit seats (51) are respectively installed on both sides of the first material distribution plate (53). Two first sliding blocks (531) are provided and installed in corresponding positions. The two first sliding blocks (531) are respectively slidably connected to the limit seats (51) on both sides.

6. The circulating calendering granulation device according to claim 1, characterized in that: The feeding mechanism (8) comprises a support frame (81) and a feeding bin (82); the support frame (81) is mounted on the frame (1); the feeding bin (82) is mounted on the frame (1); and the discharge port of the feeding bin (82) is located above the rolling mechanism (3).

7. The circulating calendering granulation device according to claim 6, characterized in that: It also includes a stirring mechanism, wherein the stirring device (8) includes a stirring motor (831) and a stirring roller (832), wherein the stirring roller (832) is rotatably connected in the loading bin (82), the stirring motor (831) is mounted on the side wall of the loading bin (82), and the output shaft is connected to the stirring roller (832), and a stirring blade (833) is mounted on the stirring roller (832).

8. The circulating calendering granulation device according to claim 7, characterized in that: A plurality of stirring blades (833) are provided, and the plurality of stirring blades (833) are dispersedly installed on the circumferential portion of the stirring roller (832).

9. The circulating calendering granulation device according to claim 1, characterized in that: The circulating conveying mechanism (6) comprises a conveyor belt structure and a circulation bin, wherein the conveyor belt structure is installed at the discharge end of the first material distribution plate (53), and the circulation bin is installed at the discharge end of the conveyor belt structure.

10. The circulating calendering granulation device according to claim 9, characterized in that: It also includes a circulation pipe (10) and a fan (9), wherein the circulation pipe (10) is connected to the circulation bin, and the fan (9) is installed on the circulation pipe (10). The end of the circulation pipe (10) facing away from the circulation bin is connected to the feeding mechanism (8) and can fill the feeding mechanism (8).

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