Granulation structure and polylactic acid production granulator based on granulation structure

Abstract

The utility model relates to the technical field of pelletizers, and discloses a pelletizing structure and a polylactic acid production pelletizer based on the same, the pelletizing structure comprises a shell, a blanking hopper and an extrusion roller, the blanking hopper is fixedly installed at the upper end of the shell, the lower end of the blanking hopper extends into the shell, and the extrusion roller is rotatably arranged in the shell; according to the granulation structure, the rotary column and the sleeve are arranged, when materials enter the sleeve from the discharging hopper, only the materials falling into the containing groove can be discharged from the discharging opening, and therefore the situation that too many materials fall between the extrusion rollers is avoided; through the arrangement of the discharging hopper, materials can evenly fall to the two sides and the middle of the containing groove when falling from the discharging hopper, the situation that materials are accumulated in the middle of the containing groove and materials do not exist on the two sides is avoided, and meanwhile in the rotating process of the rotating column, the materials in the containing groove make contact with the inner wall of the sleeve along with rotation of the rotating column so as to be further evenly dispersed. And the same density of particles generated by the granulation structure is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to pelletizer technical field, concretely is a kind of granulating structure and the polylactic acid production granulator based on the structure. BACKGROUND

[0002] Lactobacillus tablet, it is usually diameter circle, triangular or short strip-shaped tablet-shaped medicine, indication is used for abnormal fermentation in intestine, indigestion, enteritis and infantile diarrhea etc..Lactobacillus tablet is usually made in prior art using dry granulator.

[0003] Chinese patent CN220923386U discloses an extrusion type medicine granulator, which is provided with a medicine powder descending buffer device in the inside of the feeding hopper, can play a buffering role, and reduces the flow rate of the medicine powder moving downwardly contacting the buffer flap, but facilitates the control of the size of the tablet after being pressed by the tablet extrusion forming roller when the medicine powder descends uniformly.

[0004] However, when the method in the above device is used to control the discharging speed, when there are more powdery materials in the feeding hopper, the feeding hopper is easily blocked due to the obstruction of the medicine powder descending buffer device, so that the device cannot continuously and stably feed, when the discharging speed is too slow, the powdery materials cannot form tablets with uniform density between the tablet extrusion forming rollers, in addition, since the medicine powder usually cannot be uniformly dispersed between the tablet extrusion forming rollers when falling, there may be a situation that the powder falling in the middle is more than that falling on both sides, resulting in a situation that the density of the tablet formed in the groove in the middle position of the tablet extrusion forming roller is large, and the density of the medicine on both sides is small, which affects the quality of the medicine forming. UTILITY MODEL CONTENTS

[0005] (I) technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a kind of granulating structure and the polylactic acid production granulator based on the structure, with the advantages of controlling discharging speed and avoiding discharging blockage, solving the problems mentioned in the above background art.

[0007] (II) technical scheme

[0008] To solve the above technical problems, the utility model provides the following technical scheme:

[0009] A kind of granulating structure, including shell, hopper and extrusion roller, the hopper is fixedly installed at the upper end of shell, and the lower end of hopper extends to the inside of shell, the extrusion roller is rotationally arranged in the inside of shell, and the rotating direction is opposite between each other;

[0010] A quantitative discharging mechanism is arranged below the hopper, comprising a rotating column and a sleeve, the rotating column is arranged inside the sleeve and the outer wall of the rotating column is in frictional contact with the inner wall of the sleeve, the sleeve is fixedly installed at the lower end of the hopper and the upper end of the sleeve is communicated with the lower end of the hopper, the lower end of the sleeve is provided with a discharging port, the lower end of the discharging port is arranged between the extrusion rollers, and the outer wall of the rotating column is provided with a containing groove.

[0011] Preferably, the outer shell is externally fixedly installed with a support frame and a driving motor, the support frame is sequentially rotatably installed with an upper driven gear, a lower driven gear and a driving gear, the upper driven gear, the lower driven gear and the driving gear are sequentially meshingly connected, the driving end of the driving motor is fixedly connected with the driving gear, one end of the rotating column is fixedly installed with a rotating shaft, the rotating shaft is drivingly connected with the upper driven gear through a transmission belt pulley, and two driving shafts are fixedly installed on the two extrusion rollers and are respectively drivingly connected with the lower driven gear and the driving gear through transmission belt pulleys.

[0012] Preferably, the quantitative discharging mechanism further comprises an upper dispersion shaft and a lower dispersion shaft, the upper dispersion shaft is rotatably installed at the bottom of the hopper, the lower dispersion shaft is rotatably installed at the lower end of the discharging port, a bidirectional spiral vane is fixedly installed on the upper dispersion shaft and arranged inside the hopper, and a scattering vane is fixedly installed on the lower dispersion shaft and arranged inside the discharging port.

[0013] Preferably, one end of the rotating column is fixedly installed with a gear ring, the upper and lower ends of one side wall of the sleeve are rotatably installed with an upper driven shaft and a lower driven shaft respectively, one end of each of the upper driven shaft and the lower driven shaft is fixedly installed with a transmission gear, the transmission gears are meshingly connected with the gear ring, the other end of the upper driven shaft extends to the outside of the sleeve and is drivingly connected with the upper dispersion shaft through a gear transmission, and the other end of the lower driven shaft extends to the outside of the sleeve and is drivingly connected with the lower dispersion shaft through a gear transmission.

[0014] Preferably, one end of the outer shell is provided with a particle outlet, the lower end of the particle outlet is installed with a guide plate, the inside of the outer shell is installed with a vibrating sieve plate, the vibrating sieve plate is arranged below the extrusion rollers and the obliquely downward end of the vibrating sieve plate is arranged above the guide plate.

[0015] Preferably, the inside of the outer shell is fixedly installed with a collecting hopper, the collecting hopper is arranged below the vibrating sieve plate, and a collecting box is placed at the inner bottom of the outer shell and opposite to the lower end of the collecting hopper.

[0016] Preferably, a box door is hingedly installed on one side wall of the outer shell.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the granulating structure and the polylactic acid production granulator based on the structure have the following beneficial effects:

[0019] 1、The granulating structure, by setting the rotating column and the sleeve, the material from the hopper into the sleeve inside, only the material falling into the containing groove can be discharged from the discharge port, thereby avoiding too much material falling between the extrusion rollers, by setting the upper dispersion shaft and the bidirectional spiral blade, the material falling from the hopper can be evenly distributed to the both sides and the middle position of the containing groove, avoiding the material accumulation in the middle position of the containing groove while the both sides have no material, and at the same time, in the process of rotating the rotating column, the material in the containing groove is in contact with the inner wall of the sleeve to further disperse and be uniform, thereby ensuring that the granulating structure produces granules with the same density.

[0020] 2、The granulating structure, by setting the upper dispersion shaft and the bidirectional spiral blade, can also avoid the hopper from being blocked, and at the same time, by setting the lower dispersion shaft and the scattering blade, the material can be prevented from blocking the discharge port, thereby ensuring the feeding speed and avoiding the slow feeding speed affecting the extrusion effect of the extrusion roller.

[0021] 3、The granulating structure, by setting the gear ring, the upper driven shaft and the lower driven shaft, the upper dispersion shaft and the lower dispersion shaft rotate with the rotating column, so that the granulating structure is more convenient to feed. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is one of the three-dimensional structure schematic views of the granulating structure of the utility model;

[0023] Figure 2 It is the second three-dimensional structure schematic view of the granulating structure of the utility model;

[0024] Figure 3 It is the third three-dimensional structure schematic view of the granulating structure of the utility model;

[0025] Figure 4 It is one of the three-dimensional structure sectional views of the granulating structure of the utility model;

[0026] Figure 5 It is the second three-dimensional structure sectional view of the granulating structure of the utility model; Figure 4

[0027] Figure 6 It is the second three-dimensional structure sectional view of the granulating structure of the utility model;

[0028] Figure 7 It is the second three-dimensional structure sectional view of the granulating structure of the utility model; Figure 6

[0029] In the drawing: ​​

[0030] 1, shell; 11, particle outlet; 12, guide plate; 13, box door;

[0031] 2, lower hopper;

[0032] 3, extrusion roller; 31, drive shaft;

[0033] 4, quantitative feeding mechanism; 41, rotating column; 411, containing groove; 412, rotating shaft; 413, gear ring; 42, sleeve; 421, discharge port; 422, upper driven shaft; 423, lower driven shaft; 424, transmission gear; 43, upper dispersion shaft; 431, bidirectional spiral blade; 44, lower dispersion shaft; 441, dispersing blade;

[0034] 5, support frame; 51, upper driven gear; 52, lower driven gear; 53, driving gear;

[0035] 6, driving motor;

[0036] 7, vibrating sieve plate;

[0037] 8, collection hopper;

[0038] 9, collection box. DETAILED DESCRIPTION

[0039] 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.

[0040] Embodiment one

[0041] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 , the present application provides a kind of granulating structure, including shell 1, lower hopper 2 and extrusion roller 3, lower hopper 2 is fixedly installed at the upper end of shell 1, and the lower end of lower hopper 2 extends to the inside of shell 1, extrusion roller 3 is rotationally arranged in the inside of shell 1, and the rotating direction is opposite between each other;

[0042] A quantitative discharging mechanism 4 is arranged below the discharging hopper 2, the quantitative discharging mechanism 4 comprises a rotating column 41 and a sleeve 42, the rotating column 41 is rotationally arranged in the interior of the sleeve 42, and the outer sidewall of the rotating column 41 is in frictional contact with the inner sidewall of the sleeve 42, the sleeve 42 is fixedly installed at the lower end of the discharging hopper 2, and the upper end of the sleeve 42 is in communication with the lower end of the discharging hopper 2, the lower end of the sleeve 42 is provided with a discharging port 421, and the lower end of the discharging port 421 is arranged between the extrusion rollers 3, and the outer sidewall of the rotating column 41 is provided with a containing groove 411.

[0043] As can be seen from the above, the granulating structure can control the speed of the material output from the discharging hopper 2 by arranging the quantitative discharging mechanism 4, and the material entering the interior of the sleeve 42 from the discharging hopper 2 can only be discharged from the discharging port 421 when falling into the containing groove 411, so that the material falling between the extrusion rollers 3 is avoided from being too much, and meanwhile, the material in the containing groove 411 is further dispersed and uniformed by rotating the rotating column 41 to contact the inner wall of the sleeve 42, so as to ensure that the granulating structure produces granules with the same density.

[0044] In addition, some of the prior art granulating structures are provided with a chopping mechanism below the extrusion rollers 3, the material extruded into thin sheets by the extrusion rollers 3 is chopped into small granules for collection, some of the granulating structures directly extrude the material into blocky granules by means of the slotted surface of the extrusion rollers 3, and some of the granulating structures do not process the material extruded into thin sheets and directly collect the material. Since the technical problem solved in the present application is not necessarily related to the detailed structural features of the extrusion rollers 3, the part is not described in detail in the present application.

[0045] Embodiment Two

[0046] As shown in Figs. Figure 1 , Figure 3 and Figure 4 , the difference between the present embodiment and the above-mentioned embodiments is that a support frame 5 and a driving motor 6 are fixedly installed outside the housing 1, the support frame 5 is sequentially rotationally provided with an upper driven gear 51, a lower driven gear 52 and a driving gear 53, the upper driven gear 51, the lower driven gear 52 and the driving gear 53 are sequentially meshingly connected, the driving end of the driving motor 6 is fixedly connected with the driving gear 53, one end of the rotating column 41 is fixedly installed with a rotating shaft 412, the rotating shaft 412 is drivingly connected with the upper driven gear 51 through a transmission belt wheel, and the two extrusion rollers 3 are each fixedly installed with a driving shaft 31, and the two driving shafts 31 are respectively drivingly connected with the lower driven gear 52 and the driving gear 53 through transmission belt wheels

[0047] As can be seen from the above, since the upper driven gear 51, the lower driven gear 52 and the driving gear 53 are sequentially meshed and connected, the rotating directions of the lower driven gear 52 and the driving gear 53 are opposite, so that the two extrusion rollers 3 rotate reversely, and at the same time, the upper driven gear 51, the lower driven gear 52 and the driving gear 53 are all driven to work by the driving motor 6.

[0048] Embodiment Three

[0049] As shown in Figure 4 , Figure 5 , Figure 6 and Figure 7 , the difference between the present embodiment and the above-mentioned embodiments is that the quantitative feeding mechanism 4 further comprises an upper dispersion shaft 43 and a lower dispersion shaft 44, the upper dispersion shaft 43 is rotatably installed at the bottom of the feeding hopper 2, the lower dispersion shaft 44 is rotatably installed at the lower end of the discharge port 421, the upper dispersion shaft 43 is fixedly installed with a bidirectional spiral blade 431, the bidirectional spiral blade 431 is arranged inside the feeding hopper 2, and the lower dispersion shaft 44 is fixedly installed with a scattering blade 441, the scattering blade 441 is arranged inside the discharge port 421.

[0050] As can be seen from the above, by arranging the upper dispersion shaft 43 and the bidirectional spiral blade 431, the materials falling from the feeding hopper 2 can be scattered, so that the materials can be evenly dropped to the positions at both sides and the middle of the accommodating groove 411 when falling from the feeding hopper 2, avoiding the materials to be accumulated at the middle position of the accommodating groove 411 while there are no materials at both sides, and at the same time, the feeding hopper 2 can be prevented from being blocked. By arranging the lower dispersion shaft 44 and the scattering blade 441, the materials can be prevented from blocking the discharge port 421, so as to ensure the feeding speed and avoid the feeding speed to be too slow to affect the extrusion effect of the extrusion roller 3.

[0051] One end of the rotating column 41 is fixedly installed with a gear ring 413, and the upper and lower ends of one side wall of the sleeve 42 are rotatably installed with an upper driven shaft 422 and a lower driven shaft 423, respectively. One end of the upper driven shaft 422 and the lower driven shaft 423 is fixedly installed with a transmission gear 424, the transmission gear 424 is meshed and connected with the gear ring 413, the other end of the upper driven shaft 422 extends to the outside of the sleeve 42 and is connected with the upper dispersion shaft 43 through gear transmission, and the other end of the lower driven shaft 423 extends to the outside of the sleeve 42 and is connected with the lower dispersion shaft 44 through gear transmission.

[0052] As can be seen from the above, since the upper driven shaft 422 and the lower driven shaft 423 are both connected with the gear ring 413 through the transmission gear 424, and the upper driven shaft 422 and the lower driven shaft 423 are respectively connected with the upper dispersion shaft 43 and the lower dispersion shaft 44, therefore, the upper dispersion shaft 43 and the lower dispersion shaft 44 rotate with the rotating column 41.

[0053] Embodiment Four

[0054] AsFigure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown in FIG. 13, the difference between the present embodiment and the above-mentioned embodiments is that the one end of the shell 1 is provided with a particle outlet 11, the lower end of the particle outlet 11 is installed with a guide plate 12, the inside of the shell 1 is installed with a vibrating sieve plate 7, the vibrating sieve plate 7 is arranged below the extruding roller 3, and the downwardly inclined one end of the vibrating sieve plate 7 is arranged above the guide plate 12.

[0055] As known from the above, by setting the particle outlet 11, the guide plate 12 and the vibrating sieve plate 7, the particles or flat strip-shaped materials formed by the extruding roller 3 fall on the vibrating sieve plate 7, the powder particles adhered thereon can be screened by the vibrating sieve plate 7, and the particles with certain volume can be discharged from the particle outlet 11. In the present embodiment, the vibrating sieve plate 7 can adopt any one of the ways in the prior art that can make the sieve plate structure linearly vibrate in a small range. Since the vibrating way adopted is irrelevant to the innovative content of the present application, it is not described in detail in the specification.

[0056] The inside of the shell 1 is fixedly installed with a collecting hopper 8, the collecting hopper 8 is arranged below the vibrating sieve plate 7, and the inner bottom of the shell 1 is placed with a collecting box 9, the collecting box 9 is opposite to the lower end of the collecting hopper 8.

[0057] As known from the above, by setting the collecting hopper 8 and the collecting box 9, the powder particles passing through the vibrating sieve plate 7 can be accommodated, and the materials can be fully utilized.

[0058] The side wall of the shell 1 is hingedly installed with a box door 13.

[0059] By setting the box door 13, the equipment parts can be conveniently overhauled and replaced, and the collecting box 9 can be conveniently taken out.

[0060] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pelletizing structure comprising a housing, a lower hopper, and an extrusion roller, characterized by: The lower hopper is fixedly installed at the upper end of the shell, and the lower end of the lower hopper extends into the interior of the shell, and the extrusion rollers are rotationally arranged in the interior of the shell and have opposite rotation directions. A quantitative discharging mechanism is arranged below the lower hopper, and the quantitative discharging mechanism comprises a rotating column and a sleeve.

2. A granular structure according to claim 1, characterised in that: A support frame and a driving motor are fixedly installed outside the shell, the upper driven gear, the lower driven gear and the driving gear are sequentially rotationally installed on the support frame, the upper driven gear, the lower driven gear and the driving gear are sequentially meshingly connected, the driving end of the driving motor is fixedly connected with the driving gear, one end of the rotating column is fixedly installed with a rotating shaft, the rotating shaft and the upper driven gear are drivingly connected through a transmission belt pulley, and driving shafts are fixedly installed on the two extrusion rollers.

3. A granular structure according to claim 1, wherein: The quantitative discharging mechanism further comprises an upper dispersion shaft and a lower dispersion shaft, the upper dispersion shaft is rotationally installed at the bottom of the lower hopper, the lower dispersion shaft is rotationally installed at the lower end of the discharging port, a bidirectional spiral vane is fixedly installed on the upper dispersion shaft and arranged in the interior of the lower hopper, and a scattering vane is fixedly installed on the lower dispersion shaft and arranged in the interior of the discharging port.

4. A granular structure according to claim 3, wherein: One end of the rotating column is fixedly installed with a gear ring, upper and lower ends of one side wall of the sleeve are rotationally installed with upper and lower driven shafts, one end of each of the upper and lower driven shafts is fixedly installed with a transmission gear, the transmission gears are meshingly connected with the gear ring, the other end of the upper driven shaft extends to the exterior of the sleeve and is drivingly connected with the upper dispersion shaft through a gear, and the other end of the lower driven shaft extends to the exterior of the sleeve and is drivingly connected with the lower dispersion shaft through a gear.

5. A granular structure according to claim 1, wherein: One end of the rotating column is fixedly installed with a gear ring, upper and lower ends of one side wall of the sleeve are rotationally installed with upper and lower driven shafts, one end of each of the upper and lower driven shafts is fixedly installed with a transmission gear, the transmission gears are meshingly connected with the gear ring, the other end of the upper driven shaft extends to the exterior of the sleeve and is drivingly connected with the upper dispersion shaft through a gear, and the other end of the lower driven shaft extends to the exterior of the sleeve and is drivingly connected with the lower dispersion shaft through a gear.

6. A granular structure according to claim 5, wherein: One end of the rotating column is fixedly installed with a gear ring, upper and lower ends of one side wall of the sleeve are rotationally installed with upper and lower driven shafts, one end of each of the upper and lower driven shafts is fixedly installed with a transmission gear, the transmission gears are meshingly connected with the gear ring, the other end of the upper driven shaft extends to the exterior of the sleeve and is drivingly connected with the upper dispersion shaft through a gear, and the other end of the lower driven shaft extends to the exterior of the sleeve and is drivingly connected with the lower dispersion shaft through a gear.

7. A granular structure according to claim 1 wherein: The shell is provided with a particle outlet at one end, a guide plate is installed at the lower end of the particle outlet, a vibrating sieve plate is installed in the interior of the shell, the vibrating sieve plate is arranged below the extrusion rollers and has an obliquely downward end arranged above the guide plate.

8. A polylactic acid production granulator characterized by: A collecting hopper is fixedly installed in the interior of the shell, the collecting hopper is arranged below the vibrating sieve plate, and a collecting box is placed at the inner bottom of the shell and opposite the lower end of the collecting hopper. A box door is hingedly installed on one side wall of the shell. The granulating structure comprises any one of claims 1-7.

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