Pelletizing, conveying and air-drying integrated device

Abstract

The invention discloses a granulating, conveying and air-drying integrated device which is integrated with air pressure and wind power equipment and can be used for timely and quickly air-drying and cooling formed granules extruded from a die hole, granules can be remotely conveyed through air flow energy while air-drying and cooling are performed, the breakage rate can be effectively reduced through flexible conveying of the air flow, and the production efficiency is improved. Meanwhile, fresh low-temperature airflow can cool the discharging bin, so that the discharging bin is in a low-temperature state, material forming is more facilitated, cooling and conveying are synchronously completed through the airflow, and energy consumption is effectively reduced; the equipment integrates the functions of granulation, air drying and conveying, can be adapted to feed and biomass particle production by adjusting the aperture of the flat die and the air pressure parameter, can be used for production, air drying and conveying of pellet feed and biomass particle fuel, and is extremely simple in structure, free of a complex conveying mechanism, low in failure rate, convenient and fast to maintain, easy to produce, manufacture, install and maintain and high in production efficiency. The method is suitable for large-scale popularization and has high commercial value.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, in particular to an integrated granulation, conveying and air-drying device. Background Art

[0002] A granulator is a device developed specifically for powder granulation. It can produce uniform granules directly from naturally sticky materials (such as feed) without the addition of a binder. Existing granulators produce pellets that are hot and moist after they are formed and discharged. If proper handling measures are not taken, the pellets will stick together, affecting their shape and resulting in poor quality.

[0003] Patent application publication number CN108175116A discloses a feed pelletizing device. The device uses a technical solution that air-dries moist, hot pellets for subsequent transportation and storage. The pellets are then transported to a collection bin via an auger conveyor for collection and packaging. This solution requires a large amount of supporting equipment, increasing production costs. Furthermore, during the pellet transportation process, mechanical collisions and other factors can lead to a high breakage rate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an integrated granulation, conveying and air-drying device, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an integrated granulation, conveying and air-drying device, comprising a speed reduction mechanism and a motor, and further comprising: a shell, a mounting step being provided in the middle of the shell; a flat die, the flat die being fixed on the mounting step, and the flat die being densely covered with die holes; a central shaft, the central shaft longitudinally passing through the center of the flat die and being rotatably mounted on the bottom of the shell, a connecting rod being vertically provided on the top thereof, and a pressure roller being rotatably mounted on the connecting rod; a cutter being provided at the portion of the central shaft below the flat die, the bottom end of the central shaft passing through the shell and being connected to the speed reduction mechanism, and the speed reduction mechanism being connected to the output shaft of the motor via a transmission shaft; the flat die divides the internal space of the shell into a feeding bin and a discharging bin, and air pressure wind power equipment and a conveying pipe are respectively provided on both sides of the discharging bin.

[0006] As a preferred technical solution of the present invention, oil seals are provided at the contact portions between the central shaft, the flat die and the housing.

[0007] As a preferred technical solution of the present invention, the feeding bin is in the shape of a funnel with a larger top and a smaller bottom.

[0008] As a preferred technical solution of the present invention, the housing, the speed reduction mechanism, the motor and the air pressure wind power equipment are fixedly mounted on the base plate.

[0009] As a preferred technical solution of the present invention, an observation window made of transparent material is provided on the feed pipe.

[0010] As a preferred technical solution of the present invention, the air outlet pipe and the material delivery pipe of the air pressure wind power equipment are offsetly arranged on both sides of the shell.

[0011] As a preferred technical solution of the present invention, a leveling pad is provided at the bottom of the base plate.

[0012] The device can process, air dry and convey most materials formed by extrusion.

[0013] For example, the device can be used to prepare pellet feed and biomass pellet fuel. In addition, it can also be used for other materials that need to be crushed, granulated, and transported. For example, this device can be used to prepare feces into pelletized farmyard manure and transport it over long distances, and this device can be used to prepare coal powder into pellets and transport it over long distances.

[0014] The device can also be used in the food processing industry.

[0015] In the food processing sector, the device can be used for tea processing. By squeezing and compressing the tea leaves, while using air drying to remove moisture generated during processing, the device improves processing efficiency and ensures uniform tea quality.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the integrated equipment integrates air pressure wind power equipment to promptly and quickly dry and cool the formed particles extruded from the die hole, and can also transport the particles over long distances by airflow during the drying and cooling process. Moreover, by adjusting the power of the air pressure wind power equipment, ultra-long-distance transportation of several hundred meters or more can be achieved. The flexible transportation of the airflow can effectively reduce the breakage rate, and the particle integrity is good, and the breakage rate is significantly lower than that of traditional auger transportation. At the same time, the fresh and low-temperature airflow can also cool the discharge bin, keeping the discharge bin at a lower temperature, which is more conducive to the molding of the material. The airflow simultaneously completes cooling and transportation, effectively reducing energy consumption.

[0017] This equipment integrates granulation, air drying and conveying functions. It can be adapted to the production of feed and biomass pellets by adjusting the flat die aperture and wind pressure parameters. It can be used for the production, air drying and conveying of materials such as pellet feed and biomass pellet fuel. It has an extremely simple structure, no complex conveying mechanism, low failure rate, convenient maintenance, easy production and manufacturing, easy installation and maintenance, suitable for large-scale promotion, and has extremely high commercial value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0019] Figure 2 This is a front structural cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the material forming and conveying state in the present invention;

[0021] Figure 4 This is a schematic diagram of the long-distance material transportation state in the present invention.

[0022] In the figure: 1 housing, 2 mounting step, 3 flat die, 4 motor, 5 middle shaft, 6 pressure roller, 7 feeding bin, 8 discharging bin, 9 air pressure wind device, 10 feeding pipe, 11 transmission shaft, 12 cutter, 13 bottom plate, 14 speed reduction mechanism. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The present invention provides a technical solution: a granulation, conveying and air-drying integrated device, comprising a shell 1, a mounting step 2 is provided in the middle of the shell 1, a flat die 3 with dense die holes is provided on the mounting step 2, and installation and maintenance are relatively convenient, a central shaft 5 is longitudinally installed at the center of the flat die 3, and an oil seal is provided at the contact part between the central shaft 5, the flat die 3 and the shell 1, to ensure low-friction operation of the central shaft 5 while improving the sealing performance, and to prevent the kinetic energy of the airflow in the discharge bin 8 from escaping through the gap, a connecting rod is vertically provided on the top of the central shaft 5, and a pressure roller 6 is rotatably provided on the connecting rod, and the number of the pressure rollers 6 is preferably 2 to 4, which are symmetrically distributed at both ends of the connecting rod;

[0025] The lower part of the central shaft 5 protrudes from the flat die 3 and is rotatably mounted on the bottom of the housing 1. A cutter 12 is provided at the lower part of the central shaft 5 to cut the extruded strip material into granules. The bottom end of the central shaft 5 passes through the housing 1 and is connected to the reduction mechanism 14. The reduction mechanism 14 is connected to the output shaft of the motor 4 through the transmission shaft 11. The motor 4 amplifies the power through the reduction mechanism 14 and transmits it to the pressure roller 6 and the cutter 12 to drive them to rotate.

[0026] The flat die 3 divides the internal space of the shell 1 into a feeding bin 7 and a discharging bin 8. The feeding bin 7 is funnel-shaped with a larger upper portion and a smaller lower portion to facilitate the addition of granulated materials. There is only a one-way airflow path inside the discharging bin 8, which directionally conveys the particles to the conveying pipe 10. Air pressure wind power equipment 9 and the conveying pipe 10 are respectively provided on the left and right sides of the discharging bin 8. The air outlet of the air pressure wind power equipment 9 is aligned with the die hole outlet area of ​​the flat die 3, which is used to simultaneously achieve: immediate air drying and cooling of the extruded particles; and conveying the particles to the conveying pipe 10 through the kinetic energy of the airflow.

[0027] The feeding pipe 10 is provided with an observation window made of a transparent material so as to observe the status of the finished granules and adjust the power or speed of the air pressure wind power device 9 and the motor 4 in time.

[0028] The housing 1, the speed reduction mechanism 14, the motor 4 and the air pressure wind power device 9 are fixedly mounted on the base plate 13. Leveling pads are provided at the bottom of the base plate 13 to facilitate leveling of the device.

[0029] During use: the material is added from the top of the housing 1 and enters the feeding bin 7. The pressing roller 6 presses the material through the die hole of the flat die 3. The cutter 12 cuts the material squeezed into strips in the hole into particles. The airflow quickly cools the granular material and blows it to the conveying pipe 10 to complete the discharge.

[0030] The material to be granulated is added to the feeding bin 7, and the motor 4 and the air pressure wind device 9 are started. When the motor 4 is just started, the air flow of the air pressure wind device 9 will be blown out from the die hole of the flat die 3. As the motor 4 runs, the formed particles extruded from the die hole of the flat die 3 encounter the air flow of the air pressure wind device 9, and are blown to the feeding pipe 10 while being dried and cooled. Finally, the particles are blown to the storage place by the kinetic energy of the air flow. The flexible air flow transportation can effectively reduce the breakage rate of the particles. By adjusting the power of the air pressure wind device 9, ultra-long-distance transportation of several hundred meters or more can be achieved.

[0031] The material is crushed by the rotating pressing roller 6 and squeezed into the die hole to be sealed. The sealing treatment of the connection position between the central axis 5 and the flat die 3, the sealing treatment between the flat die 3 and the installation step 2, and the sealing treatment between the central axis 5 and the bottom of the shell 1 make it possible for the discharge bin 8 to have only a single channel for air intake and a single channel for air discharge, and there is no loss of air flow power. When the air pressure wind power equipment 9 provides a sufficiently large air pressure, ultra-long-distance transportation can be achieved. The long-distance transportation is a throwing mode, similar to the hose spray mode, and the throwing direction can be adjusted at multiple angles. For example, farmyard manure is made into pellets and transported for thousands of meters. There is no need for manpower to carry them bit by bit. They can be directly transported and thrown to the entire field through a pipe, similar to watering for fertilization.

[0032] In order to prevent the airflow blown out by the air pressure wind power equipment 9 from being greatly affected by the central axis 5, the connecting line between the central axis of the air outlet pipe of the air pressure wind power equipment 9 and the central axis of the conveying pipe 10 bypasses the central axis 5, that is, the air outlet pipe and the conveying pipe 10 are arranged on both sides of the shell 1, but are offset, not opposite, which can effectively reduce the amount of particulate material that hits the central axis 5 under the drive of the airflow, and improve the integrity of the particulate material during transportation.

[0033] The cold air flow blown by the air pressure wind device 9 can also dissipate heat and cool the discharge bin 8 when it runs in the discharge bin 8, so that the discharge bin 8 is in a lower temperature state, which is more conducive to the molding of the material. After the running pressure roller 6 extrudes the material at high temperature, the faster it is cooled and shaped by the cold air, the better the molding degree of the particles. The temperature of the particles just extruded is very high and has not been shaped yet. The texture is relatively soft. The particles cannot be directly touched by mechanical objects, otherwise they will scatter into powder. The current practice is to transport them to the air dryer and cooling machine by a bucket elevator or a conveyor belt. The heat dissipation and shaping are carried out inside the machine, but these conveying methods have a certain mechanical contact with the granular materials. Some granular materials are broken into powder due to shaking. In this technical solution, the granular materials encounter cold air as soon as they are formed, and are quickly shaped and hardened. The granular materials are suspended and transported to the designated location along the conveying pipe 10. There is no object to mechanically squeeze and touch them, which greatly reduces the probability of the granular materials being damaged and becoming powder, and improves the quality of the finished granular products. The longer the conveying distance of the conveying pipe 10, the better the air-drying shaping degree, the better the granular material is formed, and the less powder there is.

[0034] Previously, our company applied for an invention patent with publication number CN113307036A for an ultra-long-distance suspended pneumatic conveying equipment. During the use of this conveying system, the formed pellet feed was squeezed and crushed into powder when the spiral forced extrusion was used to feed the feed. Therefore, we continuously optimized its structure and removed the spiral extrusion in the previous equipment, which minimized the damage rate of the pellets during long-distance transportation. Our purpose of optimizing the structure is to achieve more functions with the least equipment. Finally, we designed this integrated granulation, conveying and air-drying device, which integrates granulation, air-drying and conveying functions. It can be used for the production of pellet feed and biomass pellet fuel, and has an extremely simple structure, easy production and manufacturing, easy installation and maintenance, suitable for large-scale promotion, and extremely high commercial value.

[0035] The device can be used to prepare pellet feed and biomass pellet fuel. In addition, it can also be used for other materials that need to be crushed, granulated and transported. For example, this device can be used to prepare feces into pelletized farmyard manure and transport it over long distances.

[0036] For example, the device is used to prepare feces into granular farmyard manure and transport it over long distances, and the device is used to prepare coal powder into granules and transport it over long distances.

[0037] The device can also be used in the food processing industry.

[0038] In the food processing sector, the device can be used for tea processing. By squeezing and compressing the tea leaves, while using air drying to remove moisture generated during processing, the device improves processing efficiency and ensures uniform tea quality.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A granulation, conveying and air-drying integrated device, characterized in that: It comprises a speed reduction mechanism (14) and a motor (4), and further comprises: A housing (1), wherein a mounting step (2) is provided in the middle of the housing (1); A flat die (3), wherein the flat die (3) is fixed on the mounting step (2), and die holes are densely distributed on the flat die (3); A central shaft (5), the central shaft (5) longitudinally passes through the center of the flat die (3) and is rotatably mounted on the bottom of the housing (1), a connecting rod is vertically arranged on the top of the central shaft, and a pressure roller (6) is rotatably mounted on the connecting rod; The center shaft (5) is provided with a cutter (12) at a position below the flat die (3); the bottom end of the center shaft (5) passes through the housing (1) and is connected to a speed reduction mechanism (14); and the speed reduction mechanism (14) is connected to an output shaft of the motor (4) via a transmission shaft (11); The flat mold (3) divides the internal space of the shell (1) into a feeding bin (7) and a discharging bin (8), and air pressure wind power equipment (9) and a material conveying pipe (10) are respectively provided on both sides of the discharging bin (8).

2. The granulation, conveying and air-drying integrated device according to claim 1, characterized in that: Oil seals are provided at the contact portions between the central shaft (5), the flat die (3) and the housing (1).

3. The integrated granulation, conveying and air-drying device according to claim 1, characterized in that: The feeding bin (7) is in the shape of a funnel with a larger top and a smaller bottom.

4. The integrated granulation, conveying and air-drying device according to claim 1, characterized in that: The housing (1), the speed reduction mechanism (14), the motor (4) and the air pressure wind power equipment (9) are fixedly mounted on the bottom plate (13).

5. The integrated granulation, conveying and air-drying device according to claim 1, characterized in that: The feeding pipe (10) is provided with an observation window made of a transparent material.

6. The integrated granulation, conveying and air-drying device according to claim 1, characterized in that: The air outlet pipe and the material delivery pipe (10) of the air pressure wind power equipment (9) are offsetly arranged on both sides of the housing (1).

7. The integrated granulation, conveying and air-drying device according to claim 4, characterized in that: The bottom of the base plate (13) is provided with a leveling pad.

8. The integrated granulation, conveying and air-drying device according to any one of claims 1 to 7, characterized in that: The device is used for preparing and conveying pellet feed.

9. The integrated granulation, conveying and air-drying device according to any one of claims 1 to 7, characterized in that: The device is used for the preparation and transportation of biomass pellet fuel.

10. The granulation, conveying and air-drying integrated device according to any one of claims 1 to 7, characterized in that: The device is used in the food processing industry.

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