CN110841559A

CN110841559A - Rotary granulator

Info

Publication number: CN110841559A
Application number: CN201911079842.XA
Authority: CN
Inventors: 李春燕; 陈建兵; 屠艳东
Original assignee: Jiangsu Long Machinery Manufacturing Co Ltd
Current assignee: Jiangsu Long Machinery Manufacturing Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-02-28

Abstract

The invention relates to a rotary granulator which comprises a rack, a box body, a box cover, a bearing seat upper cover, a granulating wheel lower seat, an outer barrel, a first sealing ring, a round nut, a central shaft, a hollow shaft, a first tapered roller bearing, a first gear, a second gear, a thrust ball bearing, a third gear, a second tapered roller bearing, a first deep groove ball bearing, a third tapered roller bearing, a packing gland, a lower bearing cover, a packing sealing box, a main belt wheel, a belt, a secondary belt wheel, a motor, a bedplate, a fourth tapered roller bearing, a granulating assembly, a main shaft, a first transmission assembly and a second transmission assembly, wherein the box body is arranged on the rack; the granulating component is arranged on the lower seat of the granulating wheel; the first transmission assembly and the second transmission assembly are both arranged in the box body; the invention greatly improves the granulation effect and improves the granulation efficiency; in addition, vibration is also greatly reduced.

Description

Rotary granulator

Technical Field

The present invention relates to a rotary granulator.

Background

The granulator mainly comprises feed, the stirring, the pelletization, transmission and lubricating system etc., in the pharmacy, the chemical industry, food industry wide application, rotatory granulator is one kind in the granulator, it is rotatory in order to make the granule with moist powder extrusion to utilize the pelletization wheel, the pelletization wheel and the extrusion piece of current rotatory granulator are by coaxial drive, pelletization wheel and extrusion piece syntropy rotate with fast, when the powder that extrusion piece processing formed falls into the pelletization wheel, unable formation extrusion between pelletization wheel upper end and the extrusion piece, the pelletization effect is limited, pelletization efficiency is lower, in addition, pelletization wheel and extrusion piece are by coaxial drive, the length of pivot is longer, and there is certain camber because of the pivot, can drive pelletization wheel and extrusion piece during the rotation and produce and rock, and then lead to the pelletization in-process vibration great, be waited for further improvement.

Disclosure of Invention

In view of the current situation of the prior art, the technical problem to be solved by the present invention is to provide a rotary granulator which greatly improves the granulation effect and the granulation efficiency, and greatly reduces the vibration.

The technical scheme adopted by the invention for solving the technical problems is as follows: a rotary granulator comprises a rack, a box body, a box cover, a bearing seat upper cover, a granulating wheel lower seat, an outer cylinder, a first sealing ring, a round nut, a central shaft, a hollow shaft, a first tapered roller bearing, a first gear, a second gear, a thrust ball bearing, a third gear, a second tapered roller bearing, a first deep groove ball bearing, a third tapered roller bearing, a packing gland, a lower bearing cover, a packing sealing box, a main belt wheel, a belt, a secondary belt wheel, a motor, a bedplate, a fourth tapered roller bearing, a granulating assembly, a main shaft, a first transmission assembly and a second transmission assembly, and is characterized in that the bedplate is transversely fixed above the interior of the rack, and the box body is fixed on the upper side of the bedplate; the box cover is detachably fixed at an opening above the box body, and the bearing seat is detachably fixed at the upper side of the box cover; the bearing seat upper cover is detachably fixed at the upper end of the bearing seat, the first tapered roller bearing is embedded in the box cover, and a vertically distributed hollow shaft is inserted in the first tapered roller bearing; the second gear is sleeved at the lower end of the hollow shaft and is arranged inside the box body, and the first sealing ring is sleeved on the hollow shaft and is embedded in the upper cover of the bearing block; the round nut is sleeved and screwed on the hollow shaft, tightly pressed on the upper side of the first sealing ring and arranged inside the upper cover of the bearing seat, and the fourth tapered roller bearing is sleeved on the hollow shaft and embedded inside the upper end of the bearing seat; the lower seat of the granulating wheel is fixed on the upper side of the upper cover of the bearing block; the granulating assembly is arranged on the lower seat of the granulating wheel, and the outer cylinder is sleeved outside the bearing seat and fixed between the lower seat of the granulating wheel and the box cover; the upper end of the hollow shaft penetrates through the lower seat of the granulating wheel and is connected with the granulating assembly; a first supporting platform is formed inside the box body, the third gear is sleeved and fixed on the central shaft and is arranged above the first supporting platform, the second tapered roller bearing is embedded in the first supporting platform, the hollow shaft is inserted with the vertical and rotatable central shaft, the lower end of the central shaft is inserted into the second tapered roller bearing, the thrust ball bearing is sleeved on the central shaft and is arranged between the second gear and the third gear, the first deep groove ball bearing is embedded in the first supporting platform and is arranged below the second tapered roller bearing, the third tapered roller bearing is embedded at the bottom of the inner side of the box body, a vertically distributed main shaft is inserted between the first deep groove ball bearing and the third tapered roller bearing, a first gear part is outwards formed on the main shaft, and the first gear part is arranged below the first supporting platform; the lower bearing cover is detachably fixed at the bottom of the outer side of the box body, the packing gland is detachably fixed at the lower side of the lower bearing cover, and the packing sealing box is embedded in the lower side of the lower bearing cover; the lower end of the main shaft downwards penetrates through the lower bearing cover, the packing sealing box and the packing gland and extends out of the lower part of the bedplate, the main belt pulley is sleeved and fixed at the lower end of the main shaft and arranged below the bedplate, the motor is fixed on the inner wall of one side of the frame, the auxiliary belt pulley is sleeved and fixed on a rotating shaft of the motor, and a plurality of belts are sleeved between the main belt pulley and the auxiliary belt pulley; the first transmission assembly and the second transmission assembly are both arranged in the box body.

Preferably, the granulating assembly comprises a granulating barrel, a fixing nut, a sealing seat, a sealing ring, a second deep groove ball bearing, an extruding sheet, a granulating wheel, an O-shaped ring and a receiving disc; the granulating wheel is vertically fixed on the upper side of the lower seat of the granulating wheel, the granulating wheel is sleeved at the upper end of the hollow shaft and is arranged in the granulating wheel, the O-shaped ring is embedded in the lower end of the granulating wheel and is sleeved on the hollow shaft, the sealing seat is detachably fixed on the upper side of the granulating wheel and is sleeved on the central shaft, the second deep groove ball bearing is embedded in the upper end of the hollow shaft and is sleeved on the central shaft, the sealing ring is embedded in the upper end of the hollow shaft and is sleeved on the central shaft and is arranged between the second deep groove ball bearing and the sealing seat, and the extruding sheet is sleeved on the central shaft and is arranged above the sealing seat; the fixed nut is sleeved and screwed at the upper end of the central shaft and tightly pressed on the upper side of the extrusion sheet; the take-up pan is obliquely sleeved on the outer side of the outer barrel.

Preferably, the laminating of the downside side of O type circle is on the last plane of pelletization wheel lower carriage, the downside of seal receptacle inlays and establishes inside the upper end of hollow shaft, the upside of seal receptacle inlays and establishes inside the downside of extrusion piece, a plurality of grain holes have been seted up to the lower extreme outside of a grain section of thick bamboo.

Preferably, the first transmission assembly comprises a lower cover, a fifth tapered roller bearing, an upper cover, a sixth tapered roller bearing, a large gap bridge gear and a large gap bridge shaft; the fifth tapered roller bearing is embedded inside one side of the bottom of the box body, correspondingly, the sixth tapered roller bearing is embedded inside one side of the top of the box body, a large bridge shaft which is vertically distributed is arranged between the fifth tapered roller bearing and the sixth tapered roller bearing in an inserting mode, the lower cover is detachably embedded outside one side of the bottom of the box body and below the fifth tapered roller bearing, the upper cover is detachably and obliquely embedded outside one side of the top of the box body and above the sixth tapered roller bearing, and the large bridge shaft is fixedly arranged on the large bridge shaft and meshed with the first gear part.

Preferably, a second gear part and a third gear part are further formed outwards on the outer side of the large overbridge shaft, and the second gear part and the second gear are meshed with each other.

Preferably, the second transmission assembly comprises a small intermediate gear, a lining ring, a small intermediate shaft and a elastic check ring; the inside of box still is formed with the second saddle, little passing gear sets up the top at the second saddle, the junk ring inlays to be established in little passing gear, the vertical distribution of little passing shaft and rotatable interlude setting are in the junk ring, little passing gear and third gear portion intermeshing, the circlip cover is established on little passing shaft and is inlayed inside establishing the upper end at little passing gear, the both ends of little passing shaft insert respectively in the second saddle and inside the top of box.

Compared with the prior art, the invention has the advantages that: the invention realizes the reverse different-speed rotation of the granulating wheel and the extruding sheet, so that the extruding action is formed between the upper end of the granulating wheel and the extruding sheet, the granulating effect is greatly improved, and the granulating efficiency is improved; in addition, the motor drives the main shaft to rotate by virtue of the auxiliary belt wheel, the plurality of belts and the main belt wheel, and then the main shaft is transmitted to the large intermediate shaft by virtue of the first gear part and the large intermediate gear, so that the main shaft is transmitted to the hollow shaft by virtue of the second gear part and the second gear, and in the process, the vibration is greatly weakened; in a similar way, the vibration on the large overbridge shaft can be transmitted to the central shaft by virtue of the third gear part, the small overbridge gear and the third gear, and in the process, the vibration is greatly weakened, so that the granulation wheel and the extrusion piece are less in shaking in the rotation process, and the granulation wheel and the extrusion piece are also mutually offset and shaken in the reverse rotation process, thereby greatly reducing the vibration.

Drawings

FIG. 1 is a front sectional view of the present invention;

fig. 2 is a right side sectional view of the present invention.

Detailed Description

As shown in fig. 1-2, a rotary granulator comprises a frame 7, a box 6, a box cover 5, a bearing seat 27, a bearing seat upper cover 23, a granulating wheel lower seat 24, an outer cylinder 25, a first sealing ring 20, a round nut 21, a central shaft 29, a hollow shaft 28, a first tapered roller bearing 30, a first gear 8, a second gear 31, a thrust ball bearing 32, a third gear 33, a second tapered roller bearing 34, a first deep groove ball bearing 35, a third tapered roller bearing 36, a packing gland 37, a lower bearing cover 38, a packing box seal 39, a main belt wheel 40, a belt 44, a secondary belt wheel 45, a motor 46, a platen 47, a fourth tapered roller bearing 22, a granulating component, a main shaft 41, a first transmission component and a second transmission component; the bedplate 47 is transversely fixed above the inside of the frame 7, and the box body 6 is fixed on the upper side of the bedplate 47; the box cover 5 is detachably fixed at an opening above the box body 6, and the bearing seat 27 is detachably fixed at the upper side of the box cover 5; the bearing seat upper cover 23 is detachably fixed at the upper end of the bearing seat 27, the first tapered roller bearing 30 is embedded in the box cover 5, and a hollow shaft 28 which is vertically distributed is inserted in the first tapered roller bearing 30; the second gear 31 is sleeved at the lower end of the hollow shaft 28 and is arranged in the box body 6, and the first sealing ring 20 is sleeved on the hollow shaft 28 and is embedded in the bearing seat upper cover 23; the round nut 21 is sleeved and screwed on the hollow shaft 28 and tightly pressed on the upper side of the first sealing ring 20 and is arranged inside the upper cover 23 of the bearing block, and the fourth tapered roller bearing 22 is sleeved on the hollow shaft 28 and is embedded inside the upper end of the bearing block 27; the lower seat 24 of the granulating wheel is fixed on the upper side of the upper cover 23 of the bearing seat; the granulating component is arranged on the lower seat 24 of the granulating wheel, and the outer cylinder 25 is sleeved outside the bearing seat 27 and is fixed between the lower seat 24 of the granulating wheel and the box cover 5; the upper end of the hollow shaft 28 passes through the lower seat 24 of the granulating wheel and is connected with the granulating assembly; a first saddle 61 is formed inside the box body 6, the third gear 33 is fixed on the central shaft 29 in a sleeved mode and is arranged above the first saddle 61, the second tapered roller bearing 34 is embedded in the first saddle 61, a vertical and rotatable center shaft 29 is inserted into the hollow shaft 28, the lower end of the center shaft 29 is inserted into the second tapered roller bearing 34, the thrust ball bearing 32 is sleeved on the central shaft 29 and is arranged between the second gear 31 and the third gear 33, the first deep groove ball bearing 35 is embedded in the first saddle 61 and is arranged below the second tapered roller bearing 34, the third tapered roller bearing 36 is embedded at the bottom of the inner side of the box body 6, a vertically distributed main shaft 41 is inserted between the first deep groove ball bearing 35 and the third tapered roller bearing 36, a first gear part 411 is outwards formed on the main shaft 41, and the first gear part 411 is arranged below the first saddle 61; the lower bearing cover 38 is detachably fixed at the bottom of the outer side of the box body 6, the packing gland 37 is detachably fixed at the lower side of the lower bearing cover 38, and the packing sealing box 39 is embedded in the lower side of the lower bearing cover 38; the lower end of a main shaft 41 downwards penetrates through a lower bearing cover 38, a packing sealing box 39 and a packing gland 37 and extends to the lower part of a bedplate 47, a main belt wheel 40 is fixedly sleeved on the lower end of the main shaft 41 and arranged below the bedplate 47, a motor 46 is fixedly arranged on the inner wall of one side of a frame 7, an auxiliary belt wheel 45 is fixedly sleeved on a rotating shaft of the motor 46, and a plurality of belts 44 are sleeved between the main belt wheel 40 and the auxiliary belt wheel 45; the granulating component comprises a granulating barrel 17, a fixing nut 18, a sealing seat 16, a sealing ring 15, a second deep groove ball bearing 14, an extrusion sheet 13, a granulating wheel 12, an O-shaped ring 19 and a receiving disc 26; the granulating barrel 17 is vertically fixed on the upper side of the granulating wheel lower seat 24, the granulating wheel 12 is sleeved and fixed at the upper end of the hollow shaft 28 and is arranged in the granulating barrel 17, the O-shaped ring 19 is embedded in the lower end of the granulating wheel 12 and is sleeved on the hollow shaft 28, the lower side surface of the O-shaped ring 19 is attached to the upper plane of the granulating wheel lower seat 24, the sealing seat 16 is detachably fixed on the upper side of the granulating wheel 12 and is sleeved on the central shaft 29, the second deep groove ball bearing 14 is embedded in the upper end of the hollow shaft 28 and is sleeved on the central shaft 29, the sealing ring 15 is embedded in the upper end of the hollow shaft 28 and is sleeved on the central shaft 29 and is arranged between the second deep groove ball bearing 14 and the sealing seat 16, and the extruding sheet 13 is sleeved and fixed on the central shaft 29 and is arranged above the; the lower side of the sealing seat 16 is embedded in the upper end of the hollow shaft 28, and the upper side of the sealing seat 16 is embedded in the lower side of the extrusion sheet 13; the fixed nut 18 is sleeved and screwed at the upper end of the central shaft 29 and is pressed on the upper side of the extrusion sheet 13; the receiving disc 26 is obliquely sleeved on the outer side of the outer cylinder 25, and a plurality of grain outlet holes 171 are formed in the outer side of the lower end of the grain outlet cylinder 17; the first transmission assembly and the second transmission assembly are both arranged in the box body 6; the first transmission assembly comprises a lower cover 43, a fifth tapered roller bearing 42, an upper cover 11, a sixth tapered roller bearing 10, a large gap bridge gear 8 and a large gap bridge shaft 9; the fifth tapered roller bearing 42 is embedded in one side of the bottom of the box body 6, correspondingly, the sixth tapered roller bearing 10 is embedded in one side of the top of the box body 6, the vertically distributed large bridge shafts 9 are inserted between the fifth tapered roller bearing 42 and the sixth tapered roller bearing 10, the lower cover 43 is detachably embedded in the outer part of one side of the bottom of the box body 6 and is arranged below the fifth tapered roller bearing 42, the upper cover 11 is detachably embedded in the outer part of one side of the top of the box body 6 and is arranged above the sixth tapered roller bearing 10, the large bridge gear 8 is sleeved and fixed on the large bridge shaft 9 and is meshed with the first gear part 411, the outer side of the large bridge shaft 9 is also outwards provided with a second gear part 91 and a third gear part 92, and the second gear part 91 is meshed with the second gear 31; the second transmission assembly comprises a small intermediate gear 1, a lining ring 2, a small intermediate shaft 3 and a circlip 4; the inside of box 6 still is formed with second saddle 62, and little passing through gear 1 sets up in the top of second saddle 62, and lining ring 2 inlays to be established in little passing through gear 1, and the vertical distribution of little passing through axle 3 and rotatable interlude setting are in lining ring 2, and little passing through gear 1 and third gear portion 92 intermeshing, circlip 4 cover is established on little passing through axle 3 and is inlayed and establish inside the upper end of little passing through gear 1, and the both ends of little passing through axle 3 insert respectively in second saddle 62 and inside the top of box 6.

When the granulator is used, the starting motor 46 operates to drive the secondary belt pulley 45 to rotate, and further drives the main shaft 41 to rotate through the plurality of belts 44 and the main belt pulley 40, so that the large intermediate gear 8 is driven to rotate through the first gear part 411, and further drives the second gear part 91 and the third gear part 92 on the large intermediate shaft 9 to rotate, so that the second gear 31 and the small intermediate gear 1 are respectively driven to rotate, the hollow shaft 28 is driven to rotate by the rotation of the second gear 31, so that the granulator 12 is driven to rotate, impurities in the granules ensure stable operation of a hydraulic system, the third gear 33 is driven to rotate by the rotation of the small intermediate gear 1, and further the central shaft 29 is driven to reversely rotate in the hollow shaft 28, so that the extrusion sheet 13 is driven to rotate; the raw materials are put into the upper end of the discharging barrel 17, the raw materials are ground into powder under the rotation action of the extruding sheet 13 and then fall into the granulating wheel 12, when the granulating wheel 12 rotates, the upper end of the granulating wheel 12 is matched with the lower side of the extruding sheet 13, the lower end of the granulating wheel is matched with the inner bottom surface of the lower seat 24 of the granulating wheel, the powder is extruded into particles, the prepared particles are diffused to the inner wall of the discharging barrel 17 under the rotation action of the granulating wheel 12, and finally are input to the outside of the discharging barrel 17 through the plurality of discharging holes 171 and then fall into the receiving tray 26, and finally, the raw materials slide downwards in an inclined mode along the bottom surface of the receiving tray 26 to be collected in a concentrated mode.

The granulator mainly comprises a feeding system, a stirring system, a granulating system, a transmission system, a lubricating system and the like, is widely applied to pharmaceutical, chemical and food industries, and is characterized in that a rotary granulator is one of the granulators, and is used for extruding moist powder into granules by utilizing the rotation of a granulating wheel; the invention realizes the reverse different-speed rotation of the granulating wheel 12 and the extruding sheet 13, so that the extruding action is formed between the upper end of the granulating wheel 12 and the extruding sheet 13, the granulating effect is greatly improved, and the granulating efficiency is improved; in addition, the motor 46 drives the main shaft 41 to rotate by means of the secondary pulley 45, the plurality of belts 44 and the primary pulley 40, and then is transmitted to the large intermediate shaft 9 by means of the first gear portion 411 and the large intermediate gear 8, and then is transmitted to the hollow shaft 28 by means of the second gear portion 91 and the second gear 31, in the process, the vibration is greatly attenuated; similarly, the vibration on the large overbridge shaft 9 is transmitted to the central shaft 29 by the third gear part 92, the small overbridge gear 1 and the third gear 33, and in the process, the vibration is greatly weakened, so that the granulation wheel 12 and the extrusion piece 13 shake less when rotating, and the opposite rotation of the granulation wheel 12 and the extrusion piece 13 also counteracts the shake, so that the vibration is greatly reduced.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary granulator comprises a rack, a box body, a box cover, a bearing seat upper cover, a granulating wheel lower seat, an outer cylinder, a first sealing ring, a round nut, a central shaft, a hollow shaft, a first tapered roller bearing, a first gear, a second gear, a thrust ball bearing, a third gear, a second tapered roller bearing, a first deep groove ball bearing, a third tapered roller bearing, a packing gland, a lower bearing cover, a packing sealing box, a main belt wheel, a belt, a secondary belt wheel, a motor, a bedplate, a fourth tapered roller bearing, a granulating assembly, a main shaft, a first transmission assembly and a second transmission assembly, and is characterized in that the bedplate is transversely fixed above the interior of the rack, and the box body is fixed on the upper side of the bedplate; the box cover is detachably fixed at an opening above the box body, and the bearing seat is detachably fixed at the upper side of the box cover; the bearing seat upper cover is detachably fixed at the upper end of the bearing seat, the first tapered roller bearing is embedded in the box cover, and a vertically distributed hollow shaft is inserted in the first tapered roller bearing; the second gear is sleeved at the lower end of the hollow shaft and is arranged inside the box body, and the first sealing ring is sleeved on the hollow shaft and is embedded in the upper cover of the bearing block; the round nut is sleeved and screwed on the hollow shaft, tightly pressed on the upper side of the first sealing ring and arranged inside the upper cover of the bearing seat, and the fourth tapered roller bearing is sleeved on the hollow shaft and embedded inside the upper end of the bearing seat; the lower seat of the granulating wheel is fixed on the upper side of the upper cover of the bearing block; the granulating assembly is arranged on the lower seat of the granulating wheel, and the outer cylinder is sleeved outside the bearing seat and fixed between the lower seat of the granulating wheel and the box cover; the upper end of the hollow shaft penetrates through the lower seat of the granulating wheel and is connected with the granulating assembly; a first supporting platform is formed inside the box body, the third gear is sleeved and fixed on the central shaft and is arranged above the first supporting platform, the second tapered roller bearing is embedded in the first supporting platform, the hollow shaft is inserted with the vertical and rotatable central shaft, the lower end of the central shaft is inserted into the second tapered roller bearing, the thrust ball bearing is sleeved on the central shaft and is arranged between the second gear and the third gear, the first deep groove ball bearing is embedded in the first supporting platform and is arranged below the second tapered roller bearing, the third tapered roller bearing is embedded at the bottom of the inner side of the box body, a vertically distributed main shaft is inserted between the first deep groove ball bearing and the third tapered roller bearing, a first gear part is outwards formed on the main shaft, and the first gear part is arranged below the first supporting platform; the lower bearing cover is detachably fixed at the bottom of the outer side of the box body, the packing gland is detachably fixed at the lower side of the lower bearing cover, and the packing sealing box is embedded in the lower side of the lower bearing cover; the lower end of the main shaft downwards penetrates through the lower bearing cover, the packing sealing box and the packing gland and extends out of the lower part of the bedplate, the main belt pulley is sleeved and fixed at the lower end of the main shaft and arranged below the bedplate, the motor is fixed on the inner wall of one side of the frame, the auxiliary belt pulley is sleeved and fixed on a rotating shaft of the motor, and a plurality of belts are sleeved between the main belt pulley and the auxiliary belt pulley; the first transmission assembly and the second transmission assembly are both arranged in the box body.

2. A rotary granulator according to claim 1, wherein the granulation assembly comprises a granulation barrel, a fixing nut, a sealing seat, a sealing ring, a second deep groove ball bearing, an extrusion sheet, a granulation wheel, an O-ring and a receiving tray; the granulating wheel is vertically fixed on the upper side of the lower seat of the granulating wheel, the granulating wheel is sleeved at the upper end of the hollow shaft and is arranged in the granulating wheel, the O-shaped ring is embedded in the lower end of the granulating wheel and is sleeved on the hollow shaft, the sealing seat is detachably fixed on the upper side of the granulating wheel and is sleeved on the central shaft, the second deep groove ball bearing is embedded in the upper end of the hollow shaft and is sleeved on the central shaft, the sealing ring is embedded in the upper end of the hollow shaft and is sleeved on the central shaft and is arranged between the second deep groove ball bearing and the sealing seat, and the extruding sheet is sleeved on the central shaft and is arranged above the sealing seat; the fixed nut is sleeved and screwed at the upper end of the central shaft and tightly pressed on the upper side of the extrusion sheet; the take-up pan is obliquely sleeved on the outer side of the outer barrel.

3. The rotary granulator according to claim 2, wherein the lower side surface of the O-ring is attached to the upper plane of the lower seat of the granulation wheel, the lower side of the sealing seat is embedded inside the upper end of the hollow shaft, the upper side of the sealing seat is embedded inside the lower side of the extrusion sheet, and the outer side of the lower end of the granulation cylinder is provided with a plurality of granulation holes.

4. The rotary granulator of claim 1 wherein the first transmission assembly comprises a lower cap, a fifth tapered roller bearing, an upper cap, a sixth tapered roller bearing, a large bridge gear and a large bridge shaft; the fifth tapered roller bearing is embedded inside one side of the bottom of the box body, correspondingly, the sixth tapered roller bearing is embedded inside one side of the top of the box body, a large bridge shaft which is vertically distributed is arranged between the fifth tapered roller bearing and the sixth tapered roller bearing in an inserting mode, the lower cover is detachably embedded outside one side of the bottom of the box body and below the fifth tapered roller bearing, the upper cover is detachably and obliquely embedded outside one side of the top of the box body and above the sixth tapered roller bearing, and the large bridge shaft is fixedly arranged on the large bridge shaft and meshed with the first gear part.

5. The rotary granulator of claim 4 wherein the large axle shaft further comprises a second gear portion and a third gear portion formed outwardly from the outside of the large axle shaft, the second gear portion and the third gear portion being intermeshed.

6. The rotary granulator of claim 1 wherein the second transmission assembly comprises a small idler gear, a bushing, a small idler shaft, and a circlip; the inside of box still is formed with the second saddle, little passing gear sets up the top at the second saddle, the junk ring inlays to be established in little passing gear, the vertical distribution of little passing shaft and rotatable interlude setting are in the junk ring, little passing gear and third gear portion intermeshing, the circlip cover is established on little passing shaft and is inlayed inside establishing the upper end at little passing gear, the both ends of little passing shaft insert respectively in the second saddle and inside the top of box.