Internal discharging type double-roller gear granulator

Abstract

The utility model belongs to the technical field of powder raw material granulation mechanical equipment, and particularly relates to an internal unloading type double-roller gear granulator which comprises a double-roller mechanism and an unloading mechanism, the double-roller mechanism comprises hollow gear rollers and a die hole, the two hollow gear rollers are horizontally arranged side by side and are meshed with each other, the die hole penetrates through the bottom of a meshing groove of the hollow gear rollers, and the unloading mechanism is arranged on the die hole. The two ends of the hollow gear roller are rotationally connected to the two ends of the discharging mechanism in a sleeving mode, the middle of the hollow gear roller is arranged close to the inner wall of the hollow gear roller, and when the hollow gear roller rotates, materials thrown into the meshing part from the upper portion can be extruded and enter the hollow gear roller after being formed through a die hole in the bottom of a meshing groove; molding materials on the die holes are scraped into finished particles and discharged to the outside from the end of the hollow gear roller, the materials do not need to be smashed after being formed, and the yield can be increased. The unloading mechanism comprises a granule receiving barrel, a first granule scraping knife and a discharging mechanism, finished granules can be conveyed to the outside of the hollow gear roller from the end part of the granule receiving barrel, and the discharging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to powder raw material granulation mechanical equipment technical field, concretely relates to an internal unloading type double-roller gear granulator. BACKGROUND

[0002] The granulator is a device for extruding powder materials into granules, and is mainly used in the feed industry and fertilizer industry. The conventional double-roller extrusion granulator currently used at home and abroad puts the mixed raw materials into the double-roller granulation mechanism, and further breaks and screens the granules of the right size after the raw materials are rolled into granules by the semispherical die holes on the double rollers.

[0003] The patent document with the publication number CN220443776U discloses a double-roller extrusion granulator, which can clean the materials adhered to the granulation shaft and sort the finished materials and residues, so that the finished materials are of high quality, and the residues can be processed again, thereby reducing waste. The double-roller extrusion granulator comprises a granulation mechanism, a breaking mechanism, a driving mechanism, a transmission mechanism, and a filtering mechanism. The breaking mechanism is installed at the lower end of the granulation mechanism, the driving mechanism is installed at the right end of the breaking mechanism, the transmission mechanism is installed at the rear end of the granulation mechanism, and the filtering mechanism is installed at the front end of the breaking mechanism. The granulation mechanism forms a plate from the materials, the breaking mechanism breaks the plate into granules, the driving mechanism drives the breaking mechanism, the transmission mechanism drives the granulation mechanism in cooperation with the driving mechanism, and the filtering mechanism sorts the finished products.

[0004] However, different materials have different bite angles, and the gap between the rollers of the above-mentioned granulator cannot be adjusted at any time, which requires high granulation materials and has poor adaptability. The above-mentioned granulator first forms a plate from the materials, and then breaks and filters the plate. The breaking process has poor controllability, and there are problems of insufficient breaking and damage to the finished products. The yield of the finished products is low after filtering. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model aims to provide an internal unloading type double-roller gear granulator, which does not need to break the materials after forming, and can improve the yield of the finished products.

[0006] To solve the above-mentioned technical problems, the utility model provides an internal unloading type double-roller gear granulator, which comprises:

[0007] a rack;

[0008] a roller mechanism comprising hollow gear rollers and die holes, two hollow gear rollers are arranged horizontally side by side and meshed with each other, and the two ends are rotatably connected to the rack, and the die holes penetrate the meshing groove bottom of the hollow gear rollers;

[0009] A discharging mechanism, both ends of the hollow gear roller are rotatably sleeved on both ends of the discharging mechanism, the end of the discharging mechanism is fixedly connected with the rack, and the middle part is arranged close to the inner wall of the hollow gear roller for scraping off the formed material extruded from the mold hole and discharging the formed material from the end of the hollow gear roller to the outside.

[0010] Preferably, in the above scheme, the discharging mechanism comprises a particle receiving cylinder, a first particle scraping knife and a discharging mechanism, the first particle scraping knife is fixed above the particle receiving cylinder and arranged close to the inner wall of the hollow gear roller, both ends of the hollow gear roller are rotatably sleeved on both ends of the particle receiving cylinder, and the discharging mechanism is used for conveying the formed material in the particle receiving cylinder from the end to the outside.

[0011] Preferably, in the above scheme, the hollow gear roller comprises a roller, a shaft sleeve and a support plate, the shaft sleeve is coaxially arranged at each end of the roller, and the roller and the shaft sleeve are fixedly connected through a plurality of support plates.

[0012] Preferably, in the above scheme, the discharging mechanism comprises a screw rod and a second driving mechanism, the screw rod is arranged in the particle receiving cylinder and penetrates through both ends of the particle receiving cylinder, and the second driving mechanism is used for driving the screw rod to rotate.

[0013] Preferably, in the above scheme, the particle receiving cylinder comprises an arc groove and a circular tube, the circular tube is arranged at each end of the arc groove, the hollow gear roller, the arc groove, the circular tube and the screw rod are coaxially arranged, and both ends of the hollow gear roller are rotatably sleeved on the circular tube.

[0014] Preferably, in the above scheme, the particle receiving cylinder further comprises a baffle and a wing plate, the wing plate is arranged at each end of the baffle, the first particle scraping knife is arranged on the upper edge of the baffle, and the lower edge of the baffle is connected with the edge of the arc groove close to the inner side of the pair of roller mechanisms.

[0015] Preferably, in the above scheme, the mold hole is a tapered hole, and the hole diameter gradually decreases from the outer wall to the inner wall of the hollow gear roller.

[0016] Preferably, in the above scheme, the outer end of the mold hole is a hexagonal hole, the inner end is a circular hole, and a plurality of the mold holes are arranged in a grid on the bottom of the meshing groove.

[0017] Preferably, in the above scheme, the mold hole penetrates the protruding tooth of the hollow gear roller, when the protruding tooth is completely engaged with the meshing groove, the positions of the mold holes on the protruding tooth and the meshing groove are staggered with each other.

[0018] Preferably, in the above scheme, the discharging mechanism comprises a horizontal shaft, a guide groove and a second pellet scraper, the end of the horizontal shaft is fixedly connected with the rack, the two ends of the hollow gear roller are rotatably sleeved at the two ends of the horizontal shaft, the guide groove is arranged in a shape of high in the middle and low at both ends, the end is arranged close to the end of the hollow gear roller, the inner edge is fixedly connected with the horizontal shaft, and the outer edge is arranged close to the inner wall below the meshing position of the two hollow gear rollers.

[0019] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0020] 1. A kind of internal discharging type double-roll gear granulator in the utility model, including double-roll mechanism and discharging mechanism, double-roll mechanism includes hollow gear roller and die hole, two hollow gear rollers are arranged horizontally and side by side and mesh with each other, can extrude the material that is thrown into meshing position from above when rotating, after forming through die hole in meshing groove bottom, enter the inside of hollow gear roller, when the formed material on die hole rotates to the middle part of discharging mechanism, the formed material is scraped off as finished product granule and is discharged to outside from the end of hollow gear roller, material does not need to be broken after forming, can improve yield.

[0021] 2. The discharging mechanism in the utility model includes pellet receiving cylinder, first pellet scraper and discharge mechanism, when the formed material on die hole rotates to the upper side of pellet receiving cylinder, the formed material is scraped off into pellet receiving cylinder by first pellet scraper, finished product granule in pellet receiving cylinder is transported from end to the outside of hollow gear roller by discharge mechanism, can improve the discharging efficiency of finished product granule, realize the function of fast discharging from the inside of granulator.

[0022] 3. The hollow gear roller in the utility model includes roller, shaft sleeve and support plate, the two ends of roller are respectively provided with shaft sleeve coaxially, roller and shaft sleeve are fixedly connected through multiple support plates, the inner wall of shaft sleeve is slidably connected with the two ends of pellet receiving cylinder, when roller rotates, it can have good stability, and the longer the roller is, the higher the granulation efficiency is, and the roller can be replaced according to the forming needs of different materials.

[0023] 4. The pellet receiving cylinder in the utility model includes circular arc groove, circular tube, baffle and wing plate, the baffle and wing plate can prevent the finished product granule scraped off from falling to the outside of circular arc groove.

[0024] 5. The die hole in the utility model is arranged as a tapered hole, the hole diameter gradually decreases from the outer wall to the inner wall of hollow gear roller, the design of tapered hole can eliminate the resistance of die hole, so that the pressing process of granule is more smooth, the residual heat and die hole wear are reduced, and the efficiency and quality of granule processing are ensured.

[0025] 6. The utility model discloses a hexagonal die hole, a plurality of die holes are distributed in the bottom of the meshing groove in a grid, and the honeycomb structure formed by the hexagonal holes can most effectively fill the plane in two-dimensional space, so that the effective area of the bottom of the meshing groove is fully utilized.

[0026] 7. The utility model discloses a die hole is set up on the convex tooth and the meshing groove staggeredly, can avoid the structural strength of hollow gear roller to be insufficient because of the meshing groove because of the opening too dense under the condition of guaranteeing the number of opening. ACCURACY

[0027] Figure 1 It is a first visual angle structural diagram of the internal discharge type double-roller gear granulator of example one.

[0028] Figure 2 It is a second visual angle structural diagram of the internal discharge type double-roller gear granulator of example one.

[0029] Figure 3 It is the installation structure diagram of the double-roller mechanism of example one.

[0030] Figure 4 It is the installation structure diagram of the discharge mechanism of example one.

[0031] Figure 5 It is the structure diagram of the hollow gear roller of example one.

[0032] Figure 6 It is the structure diagram of the particle receiving cylinder of example one.

[0033] Figure 7 It is the A partial enlarged view of the hollow gear roller of example one.

[0034] Figure 8 It is the die hole position distribution structure diagram of example one.

[0035] Figure 9 It is the structure diagram of the discharge mechanism of example two.

[0036] 1 - pair of rollers, 11 - hollow gear roller, 111 - meshing groove, 112 - roller barrel, 113 - shaft sleeve, 114 - support plate, 115 - convex teeth, 12 - die hole, 121 - hexagonal hole, 122 - round hole, 13 - first driving mechanism; 2 - discharging mechanism, 21 - particle receiving barrel, 211 - circular arc groove, 212 - circular tube, 213 - baffle, 214 - wing plate, 215 - clamping block, 22 - first particle scraping knife, 221 - base, 23 - discharging mechanism, 231 - screw rod, 232 - second driving mechanism, 24 - cross shaft, 25 - guide groove, 26 - second particle scraping knife, 3 - feeding bin, 4 - filtering structure, 41 - filter screen, 42 - guide groove, 43 - collecting port, 5 - recycling bin, 6 - rack, 61 - clamping groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the terms "first", "second", "third" are described, they are only for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0040] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection", "arrangement" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model. According to the overall structure of the utility model, its embodiments are described below.

[0041] Embodiment one: as shown in the embodiment, the embodiment discloses an inner unloading type double-roller gear granulator, which comprises a rack 6, a double-roller mechanism 1 and a discharging mechanism 2. Figures 1-4 The two hollow gear rollers 11 are horizontally arranged side by side and meshed with each other, the die hole 12 penetrates the bottom of the meshing groove 111 of the hollow gear roller 11, the two ends of the hollow gear roller 11 are rotatably sleeved at the two ends of the discharging mechanism 2, the end of the discharging mechanism 2 is fixedly connected with the rack 6, and the middle part is arranged close to the inner wall of the hollow gear roller 11 for scraping off the formed material extruded from the die hole 12 and discharging the formed material from the end of the hollow gear roller 11 to the outside. In use, the left hollow gear roller 11 rotates clockwise, and the right hollow gear roller 11 rotates counterclockwise, which can extrude the material entering from above the meshing part into the die hole 12, and the material is extruded from the inside of the hollow gear roller 11 after being formed by the die hole 12. When the formed material on the die hole 12 rotates to contact the middle part of the discharging mechanism 2, the formed material is scraped off as finished particles and discharged from the end of the hollow gear roller 11 to the outside, and the material does not need to be broken after being formed, which can improve the yield. In addition, the two ends of the hollow gear roller 11 are rotatably sleeved at the two ends of the discharging mechanism 2, which can improve the supporting force of the hollow gear roller 11 and has good stability when the hollow gear roller 11 is used for a long time.

[0042] Further, the discharging mechanism 2 in the embodiment comprises a particle receiving cylinder 21, a first particle scraping knife 22 and a discharging mechanism 23, the first particle scraping knife 22 is fixed above the particle receiving cylinder 21 and arranged close to the inner wall of the hollow gear roller 11, the two ends of the hollow gear roller 11 are rotatably sleeved at the two ends of the particle receiving cylinder 21, and the discharging mechanism 23 is used for conveying the formed material in the particle receiving cylinder 21 from the end to the outside. In the embodiment, the end of the particle receiving cylinder 21 is fixedly connected with the rack 6, the two ends of the first particle scraping knife 22 extend to the outside of the two end die holes 12 of the hollow gear roller 11, when the formed material on the die hole 12 rotates to the top of the particle receiving cylinder 21, the formed material is scraped off by the first particle scraping knife 22 and falls into the particle receiving cylinder 21, the finished particles in the particle receiving cylinder 21 are conveyed from the end to the outside of the hollow gear roller 11 by the discharging mechanism 23, which can improve the discharging efficiency of the finished particles.

[0043] With reference to the foregoing Figure 5 The hollow gear roller 11 in the embodiment comprises a roller barrel 112, a shaft sleeve 113 and a support plate 114. The roller barrel 112 is centrally provided with the shaft sleeve 113 at both ends, and the roller barrel 112 is fixedly connected with the shaft sleeve 113 through the support plate 114. The inner wall of the shaft sleeve 113 is rotationally connected with both ends of the pellet receiving barrel 21.

[0044] Specifically, the gear structure on the surface of the roller barrel 112 is designed as a involute gear structure, and the specific size can be designed according to the forming requirements of different materials. The thickness of the roller barrel 112 determines the solidification degree of the finished particles, and the depth of the meshing groove 111 determines the length of the finished particles. One end of the plurality of support plates 114 is arranged in a circumferential array at one end of the shaft sleeve 113, and the other end of the plurality of support plates 114 is detachably connected with the end face of the roller barrel 112 through bolts, so as to facilitate replacement of the roller barrel 112 according to the specification requirements of the finished particles. The material inside the roller barrel 112 can be discharged through the gaps between the plurality of support plates 114. It should be pointed out that the shaft sleeve 113 in the embodiment can be mounted on the rack 6 through a bearing, which can play a better role in stable support. The components of the hollow gear roller 11 should be made of wear-resistant materials, such as high-chromium alloy steel, stainless steel, etc., in order to improve the durability of the equipment.

[0045] In addition, the roller mechanism 1 also comprises a first driving mechanism 13 for driving the two hollow gear rollers 11 to rotate. Preferably, the first driving mechanism 13 is arranged outside one end of the hollow gear roller 11, which can drive the hollow gear roller 11 to rotate in the form of motor and belt transmission or gear transmission. In the embodiment, the belt transmission mode is adopted. A driving belt pulley is installed at the output end of the motor, and a driven belt pulley is installed at the end of the shaft sleeve 113. The driving belt pulley and the driven belt pulley are rotationally connected through a belt. The belt transmission is a mature transmission technology, which has the advantages of simple structure, convenient installation and low cost.

[0046] With reference to the foregoing Figure 4 The discharge mechanism 23 in the embodiment comprises a screw 231 and a second driving mechanism 232. The screw 231 is arranged in the pellet receiving barrel 21 and penetrates through both ends of the pellet receiving barrel 21. The second driving mechanism 232 is used to drive the screw 231 to rotate. Specifically, the first driving mechanism 13 and the second driving mechanism 232 are arranged on the same side of the roller mechanism 1. The second driving mechanism 232 drives the two screws 231 to rotate in the same direction in the form of belt transmission or gear transmission. In the embodiment, the belt transmission mode is adopted. A driving belt pulley is installed at the output end of the motor, and a driven belt pulley is installed at one end of each of the two screws 231. The driving belt pulley and the two driven belt pulleys are rotationally connected through a belt. The two screws 231 rotate in the same direction to output the finished particles in the pellet receiving barrel 21 from the side away from the second driving mechanism 232.

[0047] With reference to Figure 6 , the particle receiving cylinder 21 in the embodiment includes an arc groove 211 and a circular tube 212, the two ends of the arc groove 211 are respectively provided with the circular tube 212, the hollow gear roller 11, the arc groove 211, the circular tube 212 and the screw rod 231 are coaxially arranged, and the two ends of the hollow gear roller 11 are rotatably sleeved on the circular tube 212. Further, the particle receiving cylinder 21 further includes a baffle 213 and a wing plate 214, the two ends of the baffle 213 are respectively provided with the wing plate 214, the upper edge of the baffle 213 is provided with the first particle scraping knife 22, and the lower edge is connected with the edge of the arc groove 211 close to the inner side of the roller mechanism 1. Specifically, the upper edge of the baffle 213 is arranged directly above the opening of the arc groove 211, the particle scraping knife 22 is detachably mounted on the upper edge of the baffle 213, which facilitates the disassembly and replacement of the particle scraping knife 22, the cutting edge of the particle scraping knife 22 faces the direction of rotation of the hollow gear roller 11, the baffle 213 is gradually inclined from bottom to top to the direction of rotation of the hollow gear roller 11, which can avoid the rebound of the formed material to the outside of the arc groove 211 due to inertial motion after being scraped off, and the fan-shaped wing plate 214 is vertically arranged at the two ends of the baffle 213, which can prevent the formed particles scraped off from splashing out of the two ends of the arc groove 211, the circular tube 212 is fixedly connected with the rack 6, and the two ends of the screw rod 231 penetrate the circular tube 212, so that the formed particles in the arc groove 211 can be transported to the outside of the port of the circular tube 212 away from the second driving mechanism 232 during rotation.

[0048] It can be understood that the outer end of the shaft sleeve 113 is rotatably mounted on the rack 6, the outer end of the circular tube 212 extends to the outside of the shaft sleeve 113, the outer end of the circular tube 212 away from the second driving mechanism 232 is provided with a clamping block 215, and the rack 6 is provided with a clamping groove 61 matched with the clamping block 215, so that the circular tube 212 can be quickly mounted and fixed on the rack 6, avoiding deviation of the installation position of the particle receiving cylinder 21.

[0049] With reference to Figure 5 , the die hole 12 in the embodiment is designed as a tapered hole, the hole diameter gradually decreases from the outer wall to the inner wall of the hollow gear roller 11, and the design of the tapered hole can eliminate the resistance of the die hole 12, so that the compression process of the particles is more smooth, the residual heat and mesh wear are reduced, and the efficiency and quality of the particle processing are ensured; with reference to Figure 7 , the outer end of the die hole 12 in the embodiment is designed as a hexagonal hole 121, and the inner end is designed as a circular hole 122, a plurality of die holes 12 are arranged in a grid at the bottom of the meshing groove 111, and the honeycomb structure formed by the hexagonal holes 121 can most effectively fill the plane in two-dimensional space, so as to fully utilize the effective area of the bottom of the meshing groove 111.

[0050] As Figure 8As shown, the mold holes 12 in the embodiment pass through the protrusions 115 of the hollow gear roller 11, and when the protrusions 115 are fully engaged with the engagement grooves 111, the positions of the mold holes 12 on the protrusions 115 and the positions of the mold holes 12 on the engagement grooves 111 are staggered with each other. By staggering the mold holes 12, the structural strength of the hollow gear roller 11 can be ensured while avoiding the engagement grooves 111 being too dense to cause insufficient structural strength of the hollow gear roller 11.

[0051] Further, the above embodiment also includes a feeding bin 3, a filtering structure 4 and a recycling bin 5. The feeding bin 3 is arranged above the roller mechanism 1 and is arranged in a funnel structure and fixedly installed on the rack 6. The bottom periphery does not exceed the edge of the hollow gear roller 11 and is used to transport materials from above to the engagement part of the two hollow gear rollers 11. The filtering structure 4 is arranged below the end of the discharging mechanism 2 and includes a filter screen 41, a receiving groove 42 and a collection port 43. The filter screen 41 is arranged obliquely below the end of the discharging mechanism 2 and can screen and separate the finished product particles falling from above. The separated finished product particles are output from the collection port 43. The non-compliant materials fall into the receiving groove 42 below the filter screen 41 and enter the recycling bin 5 through the receiving groove 42. The materials falling from below the engagement part of the two hollow gear rollers 11 also enter the recycling bin 5. The recycling bin 5 is detachably arranged at the bottom of the rack 6 and facilitates re-adding the materials in the recycling bin 5 to the feeding bin 3.

[0052] Embodiment two: Embodiment one discloses a specific structure of the discharging mechanism 2. On this basis, the embodiment proposes another specific structure of the discharging mechanism 2, as shown in Figure 8 、 9 The discharging mechanism 2 includes a horizontal shaft 24, a guide groove 25 and a second particle scraping knife 26. The ends of the horizontal shaft 24 are fixedly connected with the rack 6, and the two ends of the hollow gear roller 11 are rotatably sleeved on the two ends of the horizontal shaft 24. The guide groove 25 is arranged in a shape with a high middle and low ends, and the ends are arranged close to the ends of the hollow gear roller 11. The inner edge is fixedly connected with the horizontal shaft 24, and the outer edge is arranged close to the inner wall below the engagement part of the two hollow gear rollers 11. The second particle scraping knife 26 is arranged on the outer edge of the guide groove 25. It can be understood that when the formed materials on the mold holes 12 rotate to the second particle scraping knife 26, they can be scraped into finished product particles and fall to the ends of the hollow gear roller 11 through the guide groove 25, and then are discharged to the outside through the gap between the ends of the hollow gear roller 11. When using the discharging mechanism 2, the filtering structure 4 needs to be arranged on the two ends of the hollow gear roller 11 at the same time, which is suitable for the production scene of low-speed hard materials or large-grained materials.

[0053] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications being applicable. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. An internal dump type roll-type gear granulator characterized by, The utility model relates to a kind of extrusion molding machine, including: Frame; Roller mechanism, including hollow gear roller and die hole, two the hollow gear roller is horizontally side by side and is arranged mutually meshing, two ends are rotatably connected with the frame respectively, the die hole is through the meshing groove bottom of the hollow gear roller; Discharge mechanism, the two ends of the hollow gear roller are rotatably sleeved in the two ends of the discharge mechanism, the end of the discharge mechanism is fixedly connected with the frame, middle part is close to the inner wall of the hollow gear roller and is arranged, for the die hole extrusion molding material of the die hole is scraped and is discharged from the end of the hollow gear roller to outside.

2. The internal discharge type roll-gear granulator according to claim 1, wherein The discharge mechanism includes a particle collection cylinder, a first particle scraping knife, and a discharge mechanism. The first particle scraping knife is fixed above the particle collection cylinder and is arranged close to the inner wall of the hollow gear roller. The two ends of the hollow gear roller are rotatably sleeved in the two ends of the particle collection cylinder. The discharge mechanism is used to transport the molding material in the particle collection cylinder from the end to the outside.

3. An internal discharge type roll-gear granulator according to claim 2, wherein The hollow gear roller includes a roller, a shaft sleeve, and a support plate. The two ends of the roller are coaxially provided with the shaft sleeve respectively. The roller and the shaft sleeve are fixedly connected by a plurality of support plates. The inner wall of the shaft sleeve is rotatably connected with the two ends of the particle collection cylinder.

4. The internal dump type roll-gear granulator according to claim 2, wherein The discharge mechanism includes a screw and a second driving mechanism. The screw is arranged in the particle collection cylinder and penetrates through the two ends of the particle collection cylinder. The second driving mechanism is used to drive the screw to rotate.

5. An internal dump type roll-to-roll gear pelletizer as claimed in claim 4, wherein, The particle collection cylinder includes an arc groove and a circular tube. The two ends of the arc groove are respectively provided with the circular tube. The hollow gear roller, the arc groove, the circular tube, and the screw are coaxially arranged. The two ends of the hollow gear roller are rotatably sleeved on the circular tube.

6. An internal discharge type roll-gear granulator according to claim 5, wherein The particle collection cylinder further includes a baffle and a wing plate. The two ends of the baffle are respectively provided with the wing plate. The upper edge of the baffle is provided with the first particle scraping knife. The lower edge is connected with the edge of the arc groove close to the inner side of the roller mechanism.

7. A roll-type internal dump gear pelletizer as claimed in any one of claims 1 to 6, wherein, The die hole is arranged as a tapered hole. The hole diameter gradually decreases from the outer wall to the inner wall of the hollow gear roller.

8. An internal dump type roll-to-roll gear pelletizer as claimed in claim 7, characterized in that, The outer end of the die hole is arranged as a hexagonal hole, and the inner end is arranged as a circular hole. A plurality of die holes are distributed in a grid pattern at the bottom of the meshing groove.

9. An internal dump type roll-to-roll gear pelletizer as claimed in claim 7, wherein, The die hole penetrates through the protruding teeth of the hollow gear roller. When the protruding teeth are completely meshed with the meshing groove, the positions of the die holes on the protruding teeth and the meshing groove are staggered with each other.

10. The internal dump type roll-gear granulator as claimed in claim 1, wherein, The discharge mechanism includes a horizontal shaft, a guide groove, and a second particle scraping knife. The end of the horizontal shaft is fixedly connected with the frame. The two ends of the hollow gear roller are rotatably sleeved in the two ends of the horizontal shaft. The guide groove is arranged in a shape with high middle and low ends. The end is close to the end of the hollow gear roller. The inner edge is fixedly connected with the horizontal shaft. The outer edge is close to the inner wall below the meshing position of the two hollow gear rollers. The second particle scraping knife is arranged on the outer edge of the guide groove.

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