CN211864910U

CN211864910U - Screw extrusion granulator

Info

Publication number: CN211864910U
Application number: CN202020241303.3U
Authority: CN
Inventors: 王敏康; 张跃
Original assignee: Yunnan Kangzhou Biological Science & Technology Co ltd
Current assignee: Yunnan Kangzhou Biological Science & Technology Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-11-06
Anticipated expiration: 2030-03-02

Abstract

The utility model relates to the field of granulator, and discloses a screw extrusion granulator, which comprises a machine body, wherein one end of the machine body is provided with a feed inlet, the other end of the machine body is provided with a discharge outlet, the machine body is transversely arranged, a rotating shaft is transversely arranged in the machine body, one end of the rotating shaft is connected with a motor, the other end of the rotating shaft extends to the tail end of the machine body, and a screw extrusion cutter is arranged on the rotating shaft; a discharging die is arranged at one end, far away from the feeding hole, of the rotating shaft, a scraper is arranged at one side, close to the feeding hole, of the discharging die, and the scraper and the discharging die are coaxially distributed with the rotating shaft; a plurality of discharge holes are uniformly formed in the discharge die; an air inlet is formed in one side of the discharge hole of the machine body, and an air outlet is formed in one side of the feed hole of the machine body. The utility model discloses can make homogeneous mixing between the material, reunite, promote the smooth ejection of compact of granule material.

Description

Screw extrusion granulator

Technical Field

The utility model relates to a granulator technical field particularly, relates to a screw extrusion granulator.

Background

The granulator mainly comprises a feeding system, a stirring system, a granulating system, a transmission system, a lubricating system and the like, and is widely applied to the pharmaceutical industry, the chemical industry and the food industry. The working process of the method is that the required water content of the mixed powder is not more than 15%, the mixed powder enters a feeding auger from a hopper, the rotating speed of a stepless speed regulating motor is regulated to obtain a proper material flow, then the mixed powder enters a stirrer, is stirred by a stirring rod and is mixed with steam for tempering, if molasses or grease is required to be added, the mixed powder is also added from a stirring cylinder and is tempered with the steam, the addition amount of the grease is not more than 3%, otherwise, the mixed powder is difficult to form, the temperature of the mixed powder can reach 64-85 ℃ after tempering, and the humidity reaches 14. Then iron impurities mixed in the powder are removed through an optional iron absorption device by a chute, and finally the powder enters a granulator for granulation.

However, in the existing granulator, during the granulation process, when the powder is mixed with steam or molasses for tempering, the materials are often difficult to agglomerate due to uneven mixing, so that the phenomenon that the granules are very uneven and difficult to granulate during granulation is caused, and even the forming degree of the granules to be extruded is poor due to low ambient temperature.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a screw extrusion granulator, it can make homogeneous mixing between the material, reunite, promotes the smooth ejection of compact of granule material.

The embodiment of the utility model is realized like this:

a screw extrusion granulator comprises a granulator body, wherein one end of the granulator body is provided with a feeding hole, the other end of the granulator body is provided with a discharging hole, the granulator body is transversely arranged, a rotating shaft is transversely arranged in the granulator body, one end of the rotating shaft is connected with a motor, the other end of the rotating shaft extends to the tail end of the granulator body, and a screw extrusion cutter is arranged on the rotating shaft; a discharging die is arranged at one end, far away from the feeding hole, of the rotating shaft, a scraper is arranged at one side, close to the feeding hole, of the discharging die, and the scraper and the discharging die are coaxially distributed with the rotating shaft; a plurality of discharge holes are uniformly formed in the discharge die; an air inlet is formed in one side of the discharge hole of the machine body, and an air outlet is formed in one side of the feed hole of the machine body.

Further, the aperture of the discharge hole is gradually increased along the flowing direction of the materials.

Furthermore, the discharge hole comprises a variable-diameter hole section and an equal-diameter hole section which are connected in a conducting mode, and the inner diameter of the variable-diameter hole section is gradually reduced and increased along the flowing direction of the materials.

Further, discharge gate below is provided with vibration screening plant, vibration screening plant includes multistage screening board and sets up in a plurality of hoppers that connect of multistage screening board below.

Further, multistage screening board slope sets up, and multistage screening board divide into the sieve of a plurality of different apertures, and the sieve mesh of a plurality of sieves increases gradually along the high-end to the low end of multistage screening board.

Further, the pitch between the screw extrusion blades gradually decreases in the conveying direction.

Further, the motor is a variable frequency motor.

Further, the machine body is detachably connected with a machine cover at one end close to the discharge hole.

The utility model has the advantages that:

the utility model discloses by the discharge end to the reverse logical hot-blast of feed end, can be more even the phenomenon that can not take place to reunite with the mixing between the material on the one hand, on the other hand also can carry out preliminary drying with the wet material of discharge gate department, heats the granule material that is about to be extruded, can effectively avoid treating the shaping degree of the granule of extruding because of the ambient temperature reduces when lower, improves the extrusion efficiency of granule.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a granulator according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a discharge mold provided by the embodiment of the present invention.

Icon: 1-motor, 2-feed inlet, 3-air outlet, 4-machine body, 5-rotating shaft, 6-spiral extrusion cutter, 7-discharge die, 8-discharge hole, 81-constant diameter hole section, 82-variable diameter hole section, 9-scraper, 10-machine cover, 11-discharge outlet, 12-multi-stage screening plate and 13-receiving hopper.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, the present embodiment provides a screw extrusion granulator, which includes a granulator body 4, wherein one end of the granulator body 4 is provided with a feeding port 2, the other end of the granulator body is provided with a discharging port 11, the granulator body 4 is transversely disposed, a rotating shaft 5 is transversely disposed in the granulator body 4, one end of the rotating shaft 5 is connected with a motor 1, the other end of the rotating shaft extends to the tail end of the granulator body 4, and a screw extrusion cutter 6 is disposed on the rotating shaft 5; a discharging die 7 is arranged at one end, far away from the feeding hole, of the rotating shaft 5, a scraper 9 is arranged at one side, close to the feeding hole 2, of the discharging die 7, and the scraper 9 and the discharging die 7 are coaxially distributed with the rotating shaft 5; a plurality of discharging holes 8 are uniformly formed in the discharging die 7; an air inlet is formed in one side of the discharge hole 11 of the machine body 4, and an air outlet 3 is formed in one side of the feed hole 2 of the machine body 4.

The working principle is as follows: when the granulator of the utility model is used, powder, steam or other quenching and tempering materials are put into the granulator body 4 through the feed inlet 2, the motor 1 drives the rotating shaft 5 to rotate, the materials are scattered and mixed under the action of the screw extrusion knife 6 and are pushed towards the discharge port 11 end, the materials are extruded at the discharge die 7 to be strip-shaped through the discharge hole 8, and the materials are cut into granules under the action of the radial scraper 9; in order to avoid the phenomenon of uneven mixing or agglomeration between the materials and the tempering materials, in the process of pushing the materials to the end of the discharge port 11, hot air is introduced into the machine body 4 near the discharge port 11 and is exhausted from the position near the feed port 2, so that the hot air is reversely supplied along the material conveying direction, on one hand, the materials can be more uniformly mixed without agglomeration, on the other hand, wet materials at the discharge port 11 can be preliminarily dried to heat the granular materials to be extruded, therefore, the reduction of the forming degree of the granules to be extruded when the environmental temperature is lower can be effectively avoided, and the extrusion efficiency of the granules is improved; simultaneously the aperture of discharge opening 8 increases along the flow direction of material gradually, can effectively avoid the material to receive the resistance in discharge opening 8, causes the ejection of compact not smooth and easy, even the phenomenon of blockking up.

In this embodiment, the aperture of discharge opening 8 increases along the flow direction of material gradually, discharge opening 8 includes turn-on connection's reducing hole section 82 and constant diameter hole section 81, the internal diameter of reducing hole section 82 reduces the increase gradually along the flow direction of material for the resistance that the granule can not receive the resistance or receive in discharge opening 8 is less, thereby the granule can smoothly discharge through discharge opening 8, reduces the granule and has improved the finished product quality of granule at the probability that discharge opening 8 is blockked up.

In this embodiment, 11 below of discharge gate is provided with vibration screening device, vibration screening device includes multistage screening board 12 and connects hopper 13, and a plurality of hoppers 13 that connect set up respectively in multistage screening board 12 below, multistage screening board 12 slope sets up, and multistage screening board 12 is divided into the sieve in a plurality of different apertures, and the sieve mesh of a plurality of sieves is crescent along multistage screening board 12's high-end to low end direction, sieves the granule that makes through multistage screening board 12 for the granule is collected according to the particle diameter, has avoided subsequent screening to handle, has alleviateed intensity of labour.

In this embodiment, the screw pitch between the screw extrusion knives 6 is gradually reduced along the conveying direction, so that the materials can be continuously accumulated in the screw conveying process, and the materials are extruded to form a whole, thereby being convenient for extrusion at the discharging die 7.

In this embodiment, motor 1 is inverter motor 1, and inverter motor 1 can drive the rotational speed of pivot 5 adjustable in certain extent to can adjust the rotational speed of pivot 5 according to the mixed quenching and tempering degree of granule material, make the degree of rounding of granule more even.

In this embodiment, the one end that organism 4 is close to the discharge gate can be dismantled and be connected with cover 10, during the use, can pull down cover 10 according to the user demand, changes the play material die 7 in different apertures to can make the not granule of equidimension, the cost is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spiral extrusion granulator comprises a granulator body (4), wherein one end of the granulator body (4) is provided with a feeding hole (2), and the other end of the granulator body is provided with a discharging hole (11), and is characterized in that the granulator body (4) is transversely arranged, a rotating shaft (5) is transversely arranged in the granulator body (4), one end of the rotating shaft (5) is connected with a motor (1), the other end of the rotating shaft extends to the tail end of the granulator body (4), and a spiral extrusion cutter (6) is arranged on the rotating shaft (5); a discharging die (7) is arranged at one end, far away from the feeding hole (2), of the rotating shaft (5), a scraper (9) is arranged at one side, close to the discharging hole (11), of the discharging die (7), and the scraper (9) and the discharging die (7) are coaxially distributed with the rotating shaft (5); a plurality of discharging holes (8) are uniformly formed in the discharging die (7); an air inlet is formed in one side of the discharge hole (11) of the machine body (4), and an air outlet (3) is formed in one side of the feed hole (2) of the machine body (4).

2. The screw extrusion granulator according to claim 1 wherein the discharge orifice (8) has a diameter that increases gradually in the direction of the flow of the material.

3. The screw extrusion granulator according to claim 1 wherein the discharge hole (8) comprises a variable diameter hole section (82) and a constant diameter hole section (81) which are connected in a communication manner, and the inner diameter of the variable diameter hole section (82) is gradually increased along the flowing direction of the material.

4. The screw extrusion granulator according to claim 1 wherein a vibratory screening device is provided below the discharge port (11), the vibratory screening device comprising a multi-stage screening plate (12) and a plurality of receiving hoppers (13) provided below the multi-stage screening plate.

5. The screw extrusion granulator according to claim 4 wherein the multi-stage screening plate (12) is disposed obliquely, and the multi-stage screening plate (12) is divided into a plurality of screening plates with different apertures, and the screening holes of the plurality of screening plates are gradually increased along the direction from the high end to the low end of the multi-stage screening plate (12).

6. The screw extrusion granulator according to claim 1 wherein the pitch between the screw extrusion knives (6) decreases gradually in the direction of conveyance.

7. The screw extrusion granulator according to claim 1 characterized in that the motor (1) is a variable frequency motor (1).

8. The screw extrusion granulator according to claim 1 wherein a cover (10) is removably attached to the end of the body (4) adjacent to the discharge opening (11).