A particle fluidized bed heat energy recovery and utilization device

Abstract

The utility model relates to the technical field of particle processing and manufacturing, specifically a particle fluidized bed heat energy recovery and utilization device, comprising a fluidized bed body, a heat circulation device connected to the fluidized bed body, and a material collecting device connected to the fluidized bed body, wherein the heat circulation device acts on the material collecting device; the heat circulation device comprises an air outlet pipe connected to the air outlet end of the fluidized bed body, a first fan arranged on the air outlet pipe, a spiral preheating pipe connected to one end of the air outlet pipe, an air inlet pipe connected to one end of the spiral preheating pipe, and a second fan arranged on the air inlet pipe, wherein one end of the air inlet pipe is connected to the air inlet end of the fluidized bed body, and the spiral preheating pipe is connected to the material collecting device; and thus the device facilitates the use of the discharged hot air to preheat the next batch of material particles to be added for drying, thereby shortening the time for the next batch of materials to be added to the fluidized bed body for drying treatment, and improving the efficiency of the drying treatment of the particle materials.

Description

Technical Field

[0001] The utility model relates to the technical field of particle processing and manufacturing, in particular to a particle fluidized bed heat energy recovery and utilization device. Background Art

[0002] The particle drying fluidized bed refers to a drying machine that can make granular materials jump and turn violently. Under the action of high-speed airflow, the material is blown up and suspended, and the particles are separated from each other and dried in the process of "boiling" and turning. After the air is heated by the heat exchanger, the hot air enters the main machine, and the wet material enters the dryer from the feeder. Due to the effect of wind pressure, the material forms a boiling state in the dryer and is widely in contact with the hot air, so that the material is dried in a shorter time.

[0003] The Chinese patent disclosed patent number CN210070373U is a low-energy particle drying fluidized bed. The hot air in the fluidized bed body is dried and purified and then heated again before entering the fluidized bed body to achieve the function of recycling. However, through the setting of this structure, although the time for heating the air is shortened, it cannot solve the problem of the drying speed of the particulate material added to the fluidized bed body. The temperature of the next batch of particulate materials added is relatively low, which leads to an extension of the drying time of the particulate materials. Utility Model Content

[0004] The utility model aims to provide a particle fluidized bed heat energy recovery and utilization device, which is used to solve the problem that the existing device is inconvenient to use the discharged hot air to preheat the next batch of particle materials to be added, resulting in prolonged drying time of the particle materials.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a particle fluidized bed heat energy recovery and utilization device, comprising a fluidized bed body, a heat circulation device connected to the fluidized bed body, and a material collection device connected to the fluidized bed body, wherein the heat circulation device acts on the material collection device; the heat circulation device comprises an air outlet pipe connected to the air outlet end of the fluidized bed body, a first fan arranged on the air outlet pipe, a spiral preheating pipe connected to one end of the air outlet pipe, an air inlet pipe connected to one end of the spiral preheating pipe, and a second fan arranged on the air inlet pipe, wherein one end of the air inlet pipe is connected to the air inlet end of the fluidized bed body, and the spiral preheating pipe is connected to the material collection device.

[0006] Furthermore, the material collection device includes a material collection bin located on one side of the fluidized bed body and having a cone-shaped lower end, an inclined discharge pipe connected to the lower end of the material collection bin, an electric valve arranged on the inclined discharge pipe, a screw conveyor connected to one end of the inclined discharge pipe, a feeding pipe connected to the top of the outer wall of the screw conveyor, and a stirring and scraping mechanism arranged in the fluidized bed body, one end of the feeding pipe penetrates and extends into the fluidized bed body, and the spiral preheating pipe is spirally wound around the outer wall of the material collection bin.

[0007] Furthermore, the stirring and scraping mechanism includes a rotating shaft located in the aggregate bin, two U-shaped scraper racks connected to the outer wall of the rotating shaft, a plurality of stirring rods arranged in the U-shaped scraper rack and vertically spaced, and a motor connected to one end of the rotating shaft, the motor is arranged on the upper side of the aggregate bin, and the outer wall of the U-shaped scraper rack is slidably matched with the inner wall of the aggregate bin.

[0008] Furthermore, the upper side of the collecting bin is connected to a feeding pipe located on one side of the motor.

[0009] Furthermore, the outer wall of the air inlet pipe is connected to an air inlet branch pipe located at one side of the air inlet end of the second fan.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model has the following beneficial effects:

[0012] During the operation of the fluidized bed body, the second fan filters and heats the air through the air filter and the heater in sequence, and then the air enters the fluidized bed body through the air inlet pipe to dry the material. During the treatment process, the hot air is brought out by the first fan and enters the spiral preheating pipe through the air outlet pipe. The hot air circulating in the spiral preheating pipe is used to preheat the next batch of granular materials to be dried stored in the aggregate device. The hot air then enters the air inlet pipe, is heated by the heater, and then circulates into the fluidized bed body for reuse. Therefore, the device facilitates the use of the exhausted hot air to preheat the next batch of material particles to be added to the fluidized bed body for drying, shortens the time for the next batch of materials to be added to the fluidized bed body for drying, and improves the efficiency of the drying process of the granular materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the material collecting device of the utility model;

[0015] Figure 3 This is a system control block diagram of the utility model.

[0016] In the figure: 1. boiling bed body; 2. heat circulation device; 3. air inlet pipe; 4. collecting bin; 5. feeding pipe; 6. inclined discharging pipe; 7. electric valve; 8. screw conveyor; 9. feeding pipe; 10. air outlet pipe; 11. spiral preheating pipe; 12. air inlet branch pipe; 13. first fan; 14. second fan; 15. motor; 16. rotating shaft; 17. U-shaped scraper frame; 18. stirring rod. DETAILED DESCRIPTION

[0017] See also Figure 1-3, a particle fluidized bed heat energy recovery and utilization device, comprising a fluidized bed body 1, a heat circulation device 2 connected to the fluidized bed body 1, and a material collecting device connected to the fluidized bed body 1, the heat circulation device 2 acts on the material collecting device; the heat circulation device 2 comprises an air outlet pipe 10 connected to the air outlet end of the fluidized bed body 1, a first fan 13 arranged on the air outlet pipe 10, a spiral preheating pipe 11 connected to one end of the air outlet pipe 10, an air inlet pipe 3 connected to one end of the spiral preheating pipe 11, and a second fan 14 arranged on the air inlet pipe 3, one end of the air inlet pipe 3 is connected to the air inlet end of the fluidized bed body 1, and the spiral preheating pipe 11 is connected to the material collecting device; an exhaust gas purifier is also arranged on the air outlet pipe 10, and a heater located at the air outlet end of the second fan 14 and an air inlet pipe 3 arranged on one side of the air inlet end of the second fan 14 are also arranged on the air inlet pipe 3. filter; during the operation of the fluidized bed body 1, the second fan 14 filters and heats the air through the air filter and the heater in sequence, and then enters the fluidized bed body 1 through the air inlet pipe 3 to dry the material. During the treatment process, the hot air is brought out by the first fan 13, and enters the spiral preheating pipe 11 through the air outlet pipe 10. The hot air circulating in the spiral preheating pipe 11 is used to preheat the next batch of particulate materials to be dried stored in the gathering device. The hot air then enters the air inlet pipe 3, is heated by the heater, and then circulates into the fluidized bed body 1 for reuse. Therefore, the device facilitates the use of the exhausted hot air to preheat the next batch of material particles to be added to the fluidized bed body 1 for drying, shortens the time for the next batch of materials to be added to the fluidized bed body 1 for drying, and improves the efficiency of the drying process of the particulate materials.

[0018] The material collecting device includes a material collecting bin 4 located on one side of the fluidized bed body 1 and having a cone-shaped lower end, an inclined discharge pipe 6 connected to the lower end of the material collecting bin 4, an electric valve 7 installed on the inclined discharge pipe 6, a screw conveyor 8 connected to one end of the inclined discharge pipe 6, a feeding pipe 9 connected to the top of the outer wall of the screw conveyor 8, and a stirring and scraping mechanism arranged in the fluidized bed body 1. One end of the feeding pipe 9 passes through and extends into the fluidized bed body 1, one end of the inclined discharge pipe 6 is connected to the bottom of the outer wall of the screw conveyor 8, and a spiral preheating pipe 11 is spirally wound around the outer wall of the material collecting bin 4; the next batch of particulate materials to be dried is stored through the material collecting bin 4, and when the preheated particulate materials are added to the fluidized bed 1, the controller controls the electric valve 7 and the screw conveyor 8 to open, and the particulate materials in the material collecting bin 4 enter the screw conveyor 8 through the inclined discharge pipe 6, and the screw conveyor 8 transports the particulate materials upward and adds them to the fluidized bed body 1 through the feeding pipe 9, thereby facilitating the addition of the preheated particulate materials into the fluidized bed body 1.

[0019] The stirring and scraping mechanism includes a rotating shaft 16 located in the aggregate bin 4, two U-shaped scraper frames 17 connected to the outer wall of the rotating shaft 16, a plurality of stirring rods 18 connected to the U-shaped scraper frames 17 and arranged vertically at intervals, and a motor 15 connected to one end of the rotating shaft 16, wherein the motor 15 is arranged on the upper side of the aggregate bin 4, and the outer wall of the U-shaped scraper frame 17 is slidably matched with the inner wall of the aggregate bin 4; the motor 15 is controlled by a controller, and the motor 15 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the two U-shaped scraper frames 17 to rotate, so as to scrape off the particulate material adhered to the inner wall of the aggregate bin 4, and the two U-shaped scraper frames 17 simultaneously drive the plurality of stirring rods 18 to stir the particulate material, thereby preheating the particulate material in the aggregate bin 4 while facilitating the scraping of the material adhered to the inner wall of the aggregate bin 4 and stirring the particulate material, thereby improving the uniformity of preheating of the particulate material.

[0020] The upper side of the material collecting bin 4 is connected to a feed pipe 5 located on one side of the motor 15 ; the granular material can be easily added into the material collecting bin 4 through the feed pipe 5 .

[0021] The outer wall of the air inlet pipe 3 is connected to an air inlet branch pipe 12 located at one side of the air inlet end of the second fan 14; the provision of the air inlet branch pipe 12 can avoid insufficient gas entering the fluidized bed body 1.

[0022] The controller is installed on the outer wall of the fluidized bed body 1 , and the controller is electrically connected to the screw conveyor 8 , the first fan 13 , the second fan 14 , the motor 15 , and the electric valve 7 .

[0023] Working principle: the next batch of granular materials to be dried is added to the collection bin 4 through the feed pipe 5 for storage. When the preheated granular materials are added to the fluidized bed 1, the controller controls the electric valve 7 and the screw conveyor 8 to open. The granular materials in the collection bin 4 enter the screw conveyor 8 through the inclined discharge pipe 6. The screw conveyor 8 transports the granular materials upward and adds them to the fluidized bed body 1 through the feed pipe 9. During the operation of the fluidized bed body 1, the second fan 14 filters and heats the air through the air filter and the heater in turn, and then enters the fluidized bed body 1 through the air inlet pipe 3 to dry the materials. During the treatment, the hot air is brought out by the first fan 13 and enters the spiral preheating pipe 11 through the air outlet pipe 10. The hot air circulating in the spiral preheating pipe 11 is used to dry the next batch of granular materials to be dried stored in the collection device. The particulate material is preheated, and the hot air then enters the air inlet pipe 3, is heated by the heater, and then circulates into the fluidized bed body 1 for reuse; and thus the device is convenient for utilizing the exhausted hot air to preheat the next batch of material particles to be added for drying, thereby shortening the time for the next batch of materials to be added to the fluidized bed body 1 for drying treatment, and improving the efficiency of drying the particulate material; the controller controls the motor 15, the motor 15 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the two U-shaped scraper racks 17 to rotate, and the particulate material adhered to the inner wall of the aggregate bin 4 is scraped off, and the two U-shaped scraper racks 17 simultaneously drive a plurality of stirring rods 18 to stir the particulate material; and thus while preheating the particulate material in the aggregate bin 4, it is convenient for scraping the material adhered to the inner wall of the aggregate bin 4 and stirring the particulate material, thereby improving the uniformity of preheating the particulate material.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A particle fluidized bed heat energy recovery and utilization device, comprising a fluidized bed body (1), and a heat circulation device (2) connected to the fluidized bed body (1), characterized in that: The invention also comprises a material collecting device connected to the fluidized bed body (1), and the heat circulation device (2) acts on the material collecting device; the heat circulation device (2) comprises an air outlet pipe (10) connected to the air outlet end of the fluidized bed body (1), a first fan (13) arranged on the air outlet pipe (10), a spiral preheating pipe (11) connected to one end of the air outlet pipe (10), an air inlet pipe (3) connected to one end of the spiral preheating pipe (11), and a second fan (14) arranged on the air inlet pipe (3), one end of the air inlet pipe (3) is connected to the air inlet end of the fluidized bed body (1), and the spiral preheating pipe (11) is connected to the material collecting device.

2. A particle fluidized bed heat recovery and utilization device as claimed in claim 1, characterized in that: The material collecting device comprises a material collecting bin (4) located on one side of the fluidized bed body (1) and having a cone-shaped lower end, an inclined discharge pipe (6) connected to the lower end of the material collecting bin (4), an electric valve (7) arranged on the inclined discharge pipe (6), a screw conveyor (8) connected to one end of the inclined discharge pipe (6), a feeding pipe (9) connected to the top of the outer wall of the screw conveyor (8), and a stirring and scraping mechanism arranged in the fluidized bed body (1), one end of the feeding pipe (9) passes through and extends into the fluidized bed body (1), and the spiral preheating pipe (11) is spirally wound around the outer wall of the material collecting bin (4).

3. A particle fluidized bed heat recovery and utilization device as claimed in claim 2, characterized in that: The stirring and scraping mechanism comprises a rotating shaft (16) located in the material collecting bin (4), two U-shaped scraping frames (17) connected to the outer wall of the rotating shaft (16), a plurality of stirring rods (18) arranged in the U-shaped scraping frames (17) and arranged vertically at intervals, and a motor (15) connected to one end of the rotating shaft (16), wherein the motor (15) is arranged on the upper side of the material collecting bin (4), and the outer wall of the U-shaped scraping frame (17) is slidably matched with the inner wall of the material collecting bin (4).

4. A particle fluidized bed heat recovery and utilization device as claimed in claim 2, characterized in that: The upper side of the material collecting bin (4) is connected to a material feeding pipe (5) located on one side of the motor (15).

5. The particle fluidized bed heat recovery and utilization device according to claim 1, characterized in that: The outer wall of the air inlet pipe (3) is connected to an air inlet branch pipe (12) located on one side of the air inlet end of the second fan (14).

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