CN107413281B

CN107413281B - High-rotation-speed wet shearing granulator

Info

Publication number: CN107413281B
Application number: CN201710279939.XA
Authority: CN
Inventors: 陈俊翰; 池晓华
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-26
Filing date: 2017-04-26
Publication date: 2023-08-22
Anticipated expiration: 2037-04-26
Also published as: CN107413281A

Abstract

The invention provides a high-rotation-speed wet shearing granulator, which comprises a cylindrical charging barrel, a rotary table and an air pipe, wherein a certain interval is formed between the rotary table and the inner wall of the charging barrel, the granulator further comprises at least one group of granulating mechanisms positioned on the side wall of the charging barrel, each granulating mechanism comprises granulating blades positioned on the inner wall of the charging barrel, a plurality of stirring blades are uniformly distributed on the circumferential outer side surface of the rotary table, each stirring blade extends to the inner wall of the charging barrel from the circumferential outer edge of the rotary table, each granulating blade is positioned right above each stirring blade, the granulator further comprises a returning circular ring, each returning circular ring is arranged along the inner wall of the charging barrel and right above each granulating blade, the end surface of each returning circular ring corresponding to the upper part of each granulating blade is arranged in a curved surface, each curved surface is concavely arranged from the inner wall of the charging barrel upwards to the center of the charging barrel, and the height of each returning circular ring is adjustable; the granulator can be suitable for granulating spherical materials with larger viscosity, the spherical particles have larger stacking density, the particle size in a certain range can be realized, and the granulation can be realized by one-time feeding.

Description

High-rotation-speed wet shearing granulator

Technical Field

The invention relates to a granulator, in particular to a high-rotation-speed wet shearing granulator, which is mainly used for granulating spherical particles.

Background

Granulation technology has been widely used in the pharmaceutical, food, chemical industries, etc. Wet rolling granulation is a branch of granulation technology, and is important in the granulation operation when an auxiliary agent such as a fluid chemical and a binder is added to a matrix material. The wet-type rolling granulation equipment in the prior art is complex in structure, the size, sphericity and compactness of the finished granules are not easy to adjust and control, and the wet-type rolling granulation equipment is especially used for manufacturing smaller granules.

When the wet rolling granulation process is adopted, the specific surface area of the finished granules is also required, so that the size of the material granules for preparing the granules needs to be controlled. The granulator can simultaneously meet the requirements of controllable size of material particles and controllable size of finished granules, and has realistic requirements on continuous operation of wet material granulation, full mixing and wet rolling granulation.

The existing rotary disk granulator comprises a charging barrel, a rotary table and an air pipe, wherein materials are rotated at a high speed by the rotary table, are drawn close to the inner wall of the charging barrel and rotate under the action of centrifugal force, air flows are blown out from the periphery of the rotary table, the materials can move upwards, the materials slide and fall into the center of the rotary table under the action of the gravity, falling particles are subjected to the centrifugal rotation action of the rotary table again, the materials continuously rotate and rotate, the materials are required to be supplied with liquid while being supplied with powder, the materials cannot be fed at one time, the stacking density is not large enough, and the particle sizes are consistent.

The rapid mixing granulator also adopts the principle of centrifugal granulation, and comprises a conical charging barrel, a stirring paddle and a granulating blade, wherein the stirring paddle rotating at the bottom of the charging barrel drives materials to do centrifugal rotary motion, and the maximum rotating speed of the existing granulating blade is 3000/min, so that the granulating effect is not ideal enough, the granulation is difficult, the rapid mixing granulator is generally used for preparing or manufacturing soft materials for mixed materials, the particle size is difficult to control during granulation, the range value of the particle size is larger, and the stacking density is not large enough.

Above-mentioned two kinds of equipment are especially to the great material of stickness such as traditional chinese medicine extract pelletization, and the pelletization technology is extremely difficult to control, causes card stirring rake easily, causes the stop operation of machine, and the in-process of pelletization is easy to become lump, and current shredding knife can't cut up, often causes the pelletization failure.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the high-rotation-speed wet shearing granulator which can be suitable for granulating materials with larger viscosity in a spherical shape, wherein the spherical particles have larger stacking density, the particle size in a certain range can be realized, and the granulation can be realized by one-time feeding.

The technical scheme is as follows: the utility model provides a granulator is sheared to high rotational speed wet process, includes cylindrical feed cylinder, is located the rotatable carousel of feed cylinder bottom, and the material lid that corresponds with the feed cylinder is equipped with the spray gun in the feed cylinder, and the below of carousel is provided with the tuber pipe, forms certain interval, its characterized in that between carousel and the inner wall of feed cylinder: still including being located at least a set of grain mechanism of feed cylinder lateral wall, grain mechanism is including being located the grain blade of cutting of feed cylinder inner wall, the circumference lateral surface of carousel on the equipartition have a plurality of stirring paddle, stirring paddle extends to the inner wall of feed cylinder from the circumference outer fringe of carousel, the grain blade of cutting be located directly over the stirring paddle, still including returning charge ring, returning charge ring set up and be located the grain blade directly over along the feed cylinder inner wall, the terminal surface that corresponds with grain blade top on the returning charge ring is the curved surface setting, this curved surface extends the setting from the upward indent of feed cylinder inner wall to the feed cylinder center.

The invention further provides that the grain cutting mechanism comprises a grain cutting motor, a horizontally arranged motor output shaft, a grain cutting blade fixed on the output shaft, wherein the output shaft penetrates through the side wall of the charging barrel and extends into the charging barrel, the outer wall of the output shaft is provided with a spiral groove structure extending from the motor end to the inner wall end of the charging barrel along the length direction of the output shaft, and the grain cutting mechanism further comprises an air blowing device for inflating along the spiral groove to the inner side direction of the charging barrel.

The invention is further arranged that the stirring blade forms a certain included angle with the radial direction and the axial direction of the turntable.

The invention is further arranged that the included angles between the stirring blade and the radial direction and the axial direction of the turntable are 30-45 degrees and 20-60 degrees respectively.

The invention is further characterized in that the grain cutting mechanisms are arranged on the charging barrel in two groups, and the two groups of grain cutting structures are uniformly distributed on the circumference of the charging barrel.

The invention is further provided that a plurality of groups of movable shoveling plates are arranged in the charging barrel, the movable shoveling plates comprise baffle plates which are arranged at a certain included angle with the inner wall of the charging barrel, and the baffle plates are positioned between the stirring blades and the height position of the returning circular ring.

The invention further provides that the height of the material returning circular ring is adjustable.

The invention is further characterized in that the outer wall of the charging barrel is provided with a cooling jacket, and the cooling jacket is of an annular cavity structure and is sleeved on the outer side wall of the charging barrel.

The movable shoveling plate is further provided with a connecting rod connected with the baffle, the connecting rod is movably arranged on the material cover and can rotate relative to the material cover to enable the included angle of the baffle relative to the material cylinder to be adjustable, and the height of the connecting rod on the material cover is adjustable.

The invention has the following beneficial effects: when granulating the great material of stickness, can smash, roll it at a high speed on original motion form (rotation and autorotation motion) basis to the material, then guide its gyration, can avoid the material to become the lump, the granule that the material made in the feed cylinder can be more nearly spherical, has great bulk density, and can realize the particle size in a certain range, once add the material and can realize the pelletization.

Drawings

Fig. 1 is a schematic view of a first cross-sectional view of a high-speed wet shearing granulator in the present embodiment;

fig. 2 is a schematic diagram of a second cross-sectional view of the high-speed wet shearing granulator in the present embodiment;

fig. 3 is a schematic diagram of the top view of the high-speed wet shearing granulator in this embodiment;

fig. 4 is a schematic structural diagram of the cooperation of the granule cutting mechanism and the cartridge in this embodiment.

The reference numerals in the figures are as follows: 1-a charging barrel; 2-a turntable; 21-stirring blades; 3-an air pipe; 4-a granulating mechanism; 41-granulating motor; 42-dicing blade; 43-output shaft; 431-helical groove; 44-an air inlet; 45-mounting a tube; 5-returning a material circular ring; 6-a movable shoveling plate; 61-baffle; 62-connecting rods; 7-a cooling jacket; 8, a material cover; 9-a spray gun; 10-dust remover.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, a high-rotation-speed wet shearing granulator comprises a cylindrical charging barrel 1, a charging cover 8 corresponding to the charging barrel 1, and a rotary table 2 positioned at the bottom of the charging barrel 1 and rotatable, wherein a cooling jacket 7 is arranged on the outer wall of the charging barrel 1, the cooling jacket 7 is of an annular cavity structure and is sleeved on the outer side wall of the charging barrel 1, a large amount of heat is generated due to friction in the working process, cooling water is introduced into the cooling jacket to cool the charging barrel during granulation, the material is prevented from being excessively high in temperature and denatured, a spray gun 9 used for humidifying the charging barrel 1 is arranged on the charging cover 8 so as to humidify the material, spherical particles are formed by promoting the material, a dust remover 10 is further arranged on the charging cover 8, dust leakage is prevented, an air pipe 3 is arranged below the rotary table 2, an opening is formed below the charging barrel 1 so that the air pipe 3 can blow into the charging barrel 1, and a certain interval is formed between the rotary table 2 and the inner wall of the charging barrel 1.

In this embodiment, the device further comprises two sets of dicing mechanisms 4 located on the side wall of the charging barrel 1, and the two sets of dicing mechanisms are uniformly distributed on the circumference of the charging barrel 1. The grain cutting mechanism 4 is including being located the grain cutting blade 42 of feed cylinder 1 inner wall, the annular equipartition has a plurality of stirring paddle 21 on the circumference lateral surface of carousel 2, stirring paddle 21 extends to the inner wall of feed cylinder 1 from the circumference outer fringe of carousel 2, grain cutting blade 42 is located stirring paddle 21 directly over, still including returning charge ring 5, returning charge ring 5 sets up and is located the grain cutting blade 42 directly over along feed cylinder 1 inner wall, the terminal surface that corresponds with grain cutting blade 42 top on returning charge ring 5 is the curved surface setting, this curved surface upwards extends the setting to feed cylinder 1 center indent from feed cylinder 1 inner wall, returning charge ring 5's height-adjustable setting. The rotation of the turntable 2 can provide a certain centrifugal force for the material, so that the material is driven to rotate and roll, and in the process, the large particles can be further smashed by the granulating blade 42 rotating at a high speed. The centrifugal force of the rotary table 2, the impact force of the materials and the cylinder wall, the mutual impact force between the materials and the impact force of the materials and the cutting blade are used for extruding and compacting the materials, and in the process, the material is crushed by the granulating blade 42, and the large particles are gradually reduced and compacted; the stirring paddle 21, the returning circular ring 5 and the granulating blade 42 form a working area, the materials are gathered and rotated towards the inner wall of the charging barrel 1 under the action of centrifugal force under the high-speed rotation of the rotary table 2, the air flow is blown out from the periphery of the rotary table 2, the materials move upwards, the materials slide and fall into the center of the rotary table 2 under the action of gravity, the falling material particles are subjected to the centrifugal rotation action of the rotary table 2 again, the materials continuously rotate and rotate, the materials break under the action of the high-speed rotation of the granulating blade 42 when entering the working area, at the moment, the stirring paddle 21 can promote the broken materials to roll, the high-speed rolling rotating materials fall onto the rotary table 2 through the returning circular ring 5, a cavity area is not formed, the materials with larger viscosity are prevented from being stuck and lump, the granulating efficiency is improved, the returning circular ring 5 can lift, the optimal height position is selected according to the quantity of the materials, compared with the original rotary disc granulating form, the embodiment can break the materials in the original moving form, the rolling and rolling can be promoted, the rolling movement is promoted, and the rolling movement is promoted. After the disposable feeding can be realized through the implementation, the particles prepared by the materials in the charging barrel 1 can be more approximate to a sphere, have larger stacking density, can realize smaller particle volume, and can control the particle size of the particles within a certain range, and through the structural improvement of the embodiment, the particle size of the particles can be maintained to be different between 100 meshes and 10 meshes.

In this embodiment, the radial and axial included angles of the stirring blade and the turntable are respectively 30-45 degrees, 20-60 degrees, and the stirring blade can be promoted to roll over materials by the angular arrangement.

In this embodiment, in order to increase the stacking density of the pellets and to make the pellets have a certain size range, the pelletizing motor 41 must be set as a high-speed rotating motor, the rotating speed of which can reach 20000 r/min at the most, so that the sealing at the mounting position of the motor is particularly important, and it is necessary to prevent the material from entering the gap between the motor and the cylinder to generate pollution and then flowing back into the cylinder, the pelletizing mechanism 4 of this embodiment comprises the pelletizing motor 41, a horizontally arranged motor output shaft 43, a pelletizing blade 42 fixed on the output shaft 43, the output shaft 43 passing through the side wall of the cylinder 1 and extending into the cylinder 1, a mounting tube 45 for supporting the output shaft 43 is also arranged between the output shaft 43 and the cylinder 1, a spiral groove 431 extending from the motor end to the inner wall end of the cylinder 1 is arranged along the outer wall of the output shaft 43 in the length direction thereof, the spiral groove 431 is distributed on the output shaft 43 at a position corresponding to the charging barrel 1, and the charging barrel further comprises an air blowing device for inflating the inner side of the charging barrel 1 along the spiral groove 431, in the embodiment, an air inlet hole 44 communicated with the inner wall of the mounting pipe 45 is arranged on the mounting pipe 45, when the charging barrel is used, the air inlet hole 44 is connected with an air pump, the output shaft 43 drives the rotation direction of the granulating blade 42 to be consistent with the spiral direction of the spiral groove 431 under the working state, under the action of the air blowing device, a certain air pressure can be formed between the output shaft 43 and the charging barrel 1 when the output shaft 43 rotates at a high speed, and particle materials in the charging barrel 1 cannot enter a fit gap between the output shaft 43 and the charging barrel 1, so that pollution to the particle materials in the charging barrel 1 is avoided.

In this embodiment, still be provided with a plurality of movable shovels 6 in the feed cylinder 1, movable shovels 6 include be the baffle 61 that certain contained angle set up with the feed cylinder inner wall, movable shovels 6 are located between stirring paddle 21 and the high position of returning charge ring 5, can change the flow state of material, accelerate the back mixing of material, guarantee that the pellet that makes is more even, movable shovels 6 still include the connecting rod 62 of connecting in baffle 61, connecting rod 62 activity set up in the material lid 8 and rotatable messenger baffle 61 for the contained angle adjustable setting of feed cylinder 1 of material lid 8 for the material lid 8, the height-adjustable setting of connecting rod 62 on material lid 8. .

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. The utility model provides a granulator is sheared to high rotational speed wet process, includes cylindrical feed cylinder, is located the rotatable carousel of feed cylinder bottom, and the material lid that corresponds with the feed cylinder is equipped with the spray gun in the feed cylinder, and the below of carousel is provided with the tuber pipe, forms certain interval, its characterized in that between carousel and the inner wall of feed cylinder: the rotary table is characterized by further comprising at least one group of grain cutting mechanisms positioned on the side wall of the charging barrel, the grain cutting mechanisms comprise grain cutting blades positioned on the inner wall of the charging barrel, a plurality of stirring paddles are uniformly distributed on the outer circumferential side surface of the rotary table, the stirring paddles extend to the inner wall of the charging barrel from the outer circumferential edge of the rotary table, the grain cutting blades are positioned right above the stirring paddles, the rotary table further comprises a returning material circular ring, the returning material circular ring is arranged along the inner wall of the charging barrel and positioned right above the grain cutting blades, the end surface of the returning material circular ring corresponding to the upper part of the grain cutting blades is in a curved surface, and the curved surface extends inwards from the inner wall of the charging barrel to the center of the charging barrel;

the grain cutting mechanism comprises a grain cutting motor, a horizontally arranged motor output shaft, a grain cutting blade fixed on the output shaft, wherein the output shaft penetrates through the side wall of the charging barrel and extends into the charging barrel, the outer wall of the output shaft is provided with a spiral groove structure extending from the motor end to the inner wall end of the charging barrel along the length direction of the output shaft, and the grain cutting mechanism further comprises an air blowing device for inflating along the spiral groove to the inner side direction of the charging barrel; the radial included angle between the stirring blade and the rotary table is 30-45 degrees, and the grain cutting mechanism is arranged on the charging barrel in two groups.

2. A high rotational speed wet shear granulator according to claim 1, wherein: the stirring blade and the axial direction of the turntable are arranged at a certain included angle.

3. A high rotational speed wet shear granulator according to claim 2, wherein: the axial included angle between the stirring blade and the turntable is 20-60 degrees.

4. A high rotational speed wet shear granulator according to claim 1, wherein: the two sets of grain cutting structures are uniformly distributed on the circumference of the charging barrel.

5. The high speed wet shear granulator of claim 4 wherein: the charging barrel is also internally provided with a plurality of groups of movable shoveling plates, each movable shoveling plate comprises a baffle plate which is arranged at a certain included angle with the inner wall of the charging barrel, and the baffle plate is positioned between the stirring blade and the height position of the returning ring.

6. A high rotational speed wet shear granulator according to claim 1, wherein: the material returning circular ring is connected to the material cover and is arranged with adjustable height.

7. A high rotational speed wet shear granulator according to claim 1, wherein: the outer wall of the charging barrel is provided with a cooling jacket, and the cooling jacket is of an annular cavity structure and is sleeved on the outer side wall of the charging barrel.

8. The high speed wet shear granulator of claim 5 wherein: the movable shoveling plate further comprises a connecting rod connected to the baffle, the connecting rod is movably arranged on the material cover and can rotate relative to the material cover to enable the included angle of the baffle relative to the material cylinder to be adjustable, and the height of the connecting rod on the material cover is adjustable.