Fly ash drying device

Abstract

The utility model provides a fly ash drying device, which relates to the technical field of fly ash drying, and comprises a transfer frame, a conveyor belt, a support frame, a fixing frame, a drying groove, a top cover, a locking fastener, a discharge port, a sealing plate, a through groove, a rotating shaft, a scraper blade, an air inlet hole, an air inlet pipe, a positioning bulge, a driving mechanism, a driving motor, a first belt wheel and a second belt wheel, the rotating directions of the drying groove and the rotating shaft in the device are opposite, under the condition that the rotating speeds of the drying groove and the rotating shaft are not increased, the impact force between the coal ash and the scraping plate is increased, the coal ash can be conveniently scattered, the time needed by drying is shortened, and meanwhile the top cover is opened, so that the coal ash can be conveniently dried. Fly ash can be evenly laid in the drying groove at a time, the later dispersing time of the fly ash is saved, meanwhile, the discharging efficiency of the fly ash in the drying groove can be improved by turning over the drying groove and the top cover and controlling the rotating shaft and the scraper to rotate, time is saved, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of fly ash drying, in particular to a fly ash drying device. Background Art

[0002] Fly ash is a solid waste produced by coal-fired power plants. It contains a large amount of carbon, silicon, aluminum, iron and other elements, and has certain activity and usable value. The comprehensive utilization of fly ash can reduce environmental pollution, save resources and improve economic benefits. The application fields of fly ash include building materials, cement, concrete, ceramics, chemicals, metallurgy, etc.

[0003] Since fly ash is in a wet state when it is produced, it needs to be dried for easy use. The drying drum in the existing commonly used rotary drying device is mostly placed horizontally or tilted at a certain angle. The fly ash raw material moves in the drying drum through the rotation of the drying drum itself. However, due to the slow rotation speed of the drying drum, it takes a long time for the fly ash to be evenly dispersed in the drying drum, and the waiting time when taking the dried fly ash out of the drying drum is also long, which makes it difficult to meet the use requirements. Utility Model Content

[0004] The utility model aims to provide a fly ash drying device, aiming to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the fly ash drying device comprises a transfer frame, a conveyor belt is arranged on the transfer frame, support frames are arranged on both sides of the transfer frame, fixed frames are arranged on the two support frames, a drying trough is arranged between the two fixed frames, the upper end of the drying trough is open, a top cover is hinged at the upper end opening of the drying trough, the movable end of the top cover is connected to the drying trough by a locking piece, a discharge port is arranged on the top cover, a detachable sealing plate is arranged at the discharge port, through slots are respectively opened at both ends of the drying trough, and a rotating shaft is arranged inside the through slot and rotatably connected to the drying trough, Scrapers are evenly arranged on the rotating shaft, and the sum of the widths of all the scrapers on the rotating shaft is not less than the shortest distance between the two through grooves in the drying tank. One end of the rotating shaft extends to the outside of one of the through grooves, and an air inlet hole is opened on the circumference of the outer surface of the other through groove. It also includes an air inlet pipe, and one end of the air inlet pipe is provided with a positioning protrusion matching the air inlet hole. A driving mechanism is arranged on the two supporting frames, and the driving mechanism includes a driving motor, and a first pulley is arranged at the output end of the driving motor. A second pulley is arranged at one end of the rotating shaft located outside the drying tank and the outer surface of the air inlet pipe, and the first pulley and the second pulley are connected by a belt.

[0006] Preferably, a material guide plate is provided on one side of the two support frames close to the transfer frame.

[0007] Preferably, the bottom of the drying tank is arc-shaped, and one end of the scraper away from the rotating shaft can contact the bottom of the drying tank. When one end of the scraper contacts the bottom of the drying tank, the scraper is in a bent state.

[0008] Preferably, the outer surface of the scraper is evenly provided with through holes.

[0009] Preferably, the lower end of the top cover is open, and the area of ​​the discharge opening at the upper end of the top cover is smaller than the area of ​​the opening at the lower end of the top cover.

[0010] The beneficial effects of the utility model are:

[0011] The drying trough in the device rotates in the opposite direction to the rotating shaft, which increases the impact force between the fly ash and the scraper without increasing the rotation speed of the drying trough and the rotating shaft, making it easier to break up the fly ash and reduce the time required for drying. At the same time, by opening the top cover, the fly ash can be evenly spread into the drying trough at one time, saving the time for later dispersion of the fly ash. At the same time, by flipping the drying trough and the top cover, and controlling the rotation of the rotating shaft and the scraper, the discharge efficiency of the fly ash in the drying trough can be improved, saving time and achieving good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0013] Figure 2 It is a structural schematic diagram of another angle of a specific embodiment of the utility model.

[0014] Figure 3 It is a front view of a specific embodiment of the utility model.

[0015] Figure 4 It is a top view of a specific embodiment of the utility model with the top cover opened.

[0016] Figure 5 It is a side view of a drying tank according to a specific embodiment of the utility model.

[0017] Figure 6 It is a structural schematic diagram of an air intake pipe according to a specific embodiment of the utility model.

[0018] In the figure: 1. transfer rack; 2. conveyor belt; 3. support rack; 4. fixed rack; 5. drying tank; 6. top cover; 7. locking member; 8. sealing plate; 9. through slot; 10. rotating shaft; 11. scraper; 12. air inlet hole; 13. air inlet pipe; 14. positioning protrusion; 15. driving motor; 16. first pulley; 17. second pulley; 18. belt; 19. guide plate; 20. through hole. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-6 As shown, a fly ash drying device comprises a transfer frame 1, a conveyor belt 2 is arranged on the transfer frame 1, support frames 3 are respectively arranged on both sides of the transfer frame 1, fixed frames 4 are arranged on the two support frames 3, a drying tank 5 is arranged between the two fixed frames 4, the upper end of the drying tank 5 is open, a top cover 6 is hinged at the upper end opening of the drying tank 5, the movable end of the top cover 6 is connected to the drying tank 5 by a locking member 7, a discharge port is arranged on the top cover 6, a detachable sealing plate 8 is arranged at the discharge port, through slots 9 are respectively opened at both ends of the drying tank 5, and a rotating shaft 10 is arranged inside the through slot 9 and rotatably connected to the drying tank 5, and scrapers 11 are evenly arranged on the rotating shaft 10. The sum of the widths of the scraper 11 is not less than the shortest distance between the two through grooves 9 in the drying tank 5. One end of the rotating shaft 10 extends to the outside of one of the through grooves 9. An air inlet hole 12 is opened on the circumference of the outer surface of the other through groove 9. It also includes an air inlet pipe 13. One end of the air inlet pipe 13 is provided with a positioning protrusion 14 that matches the air inlet hole 12. A driving mechanism is provided on the two support frames 3. The driving mechanism includes a driving motor 15. A first pulley 16 is provided at the output end of the driving motor 15. A second pulley 17 is provided at one end of the rotating shaft 10 located outside the drying tank 5 and the outer surface of the air inlet pipe 13. The first pulley 16 and the second pulley 17 are connected by a belt 18.

[0021] The transfer frame 1 and the support frame 3 are both made of aluminum alloy profiles and plates. The transfer frame 1 is used to support the conveyor belt 2. After being dried, the fly ash in the drying trough 5 falls onto the conveyor belt 2 through the discharge port and is transferred out by the conveyor belt 2; the support frame 3 is used to support the driving mechanism, the drying trough 5, the fly ash in the drying trough 5, the rotating shaft 10, etc. The heights of the support frames 3 on both sides of the transfer frame 1 are the same to ensure that the drying trough 5 remains in a horizontal state.

[0022] The sealing plate 8 can be fixed at the discharge port by means of a snap connection, or by means of bolts. When discharge is required, the sealing plate 8 on the discharge port of the top cover 6 can be removed from the discharge port.

[0023] The drying box is used to contain fly ash. When the fly ash is evenly spread in the drying box, ensure that the fly ash does not completely cover the rotating shaft 10, so that when the fly ash is lifted by the scraper 11, the fly ash has enough space to disperse, and a relative balance is achieved between the processing volume and the drying efficiency.

[0024] The sum of the widths of all the scrapers 11 on the rotating shaft 10 is not less than the shortest distance between the two through grooves 9 in the drying tank 5, ensuring that the scrapers 11 on the rotating shaft 10 can turn over all the fly ash in the drying box and improve the drying efficiency.

[0025] Working principle: when in use, open the top cover 6, spread the wet fly ash evenly on the bottom of the drying tank 5, then fix the top cover 6 to the drying tank 5 through the lock piece 7, connect the external hot air pipe to the air inlet pipe 13, the external hot air pipe and the air inlet pipe 13 are rotatably connected, hot air enters the drying tank 5, and then control the two driving motors 15 to start, one of the driving motors 15 can drive the rotating shaft 10 and the scraper 11 to rotate through the first pulley 16, the second pulley 17 and the belt 18, so as to continuously turn up the fly ash in the drying box, increase the contact area between the fly ash and the air, and at the same time, the other driving motor 15 drives the drying tank 5 to rotate through the air inlet pipe 13, and the rotation direction of the drying tank 5 is opposite to that of the rotating shaft 10. 5 is opposite to the rotation direction of the rotating shaft 10, so the rotation speed of the two driving motors 15 can be maintained at a relatively low speed, and the fly ash in the drying tank 5 can also have a sufficient dispersion. After the drying of the fly ash is completed and when the top cover 6 is facing upward, the two driving motors 15 are controlled to stop working, and then the sealing plate 8 on the top cover 6 is removed, and then the driving motor 15 that controls the rotation of the air inlet pipe 13 is started, and the top cover 6 on the drying tank 5 is rotated to a downward position. At this time, the fly ash in the drying tank 5 can be quickly discharged to the conveyor belt 2 through the discharge port on the top cover 6, and the fly ash is transported out through the conveyor belt 2. During the discharge process, the other driving motor 15 can continue to control the rotation of the rotating shaft 10 and the scraper 11, so as to discharge the fly ash in the drying tank 5 as soon as possible.

[0026] Furthermore, a material guide plate 19 is provided on one side of the two support frames 3 close to the transfer frame 1. The material guide plate 19 can reduce the situation where fly ash overflows onto the support frame 3.

[0027] Furthermore, the bottom of the drying trough 5 is arc-shaped, and one end of the scraper 11 away from the rotating shaft 10 can contact the bottom of the drying trough 5. When one end of the scraper 11 contacts the bottom of the drying trough 5, the scraper 11 is in a bent state. The material of the scraper 11 is a steel sheet, and the outer surface is covered with a rubber layer. The scraper 11 can lift the fly ash in the drying trough 5. At the same time, when the scraper 11 leaves the arc bottom of the drying trough 5, the scraper 11 naturally stretches, so that the fly ash on the scraper 11 can bounce to a better height, further increasing the dispersion of the fly ash, increasing the contact area with the hot air, and improving the drying efficiency.

[0028] Furthermore, the outer surface of the scraper 11 is evenly provided with through holes 20 , and the through holes 20 can further increase the dispersion degree of the fly ash and improve the drying efficiency of the fly ash.

[0029] Furthermore, the lower end of the top cover 6 is open, and the area of ​​the discharge port at the upper end of the top cover 6 is smaller than the area of ​​the opening at the lower end of the top cover 6. When the drying box is inverted, it is convenient to move the fly ash in the drying box to the middle position of the top cover 6, thereby improving the discharge efficiency.

[0030] The drying trough 5 in the device rotates in the opposite direction to the rotating shaft 10, and the impact force between the fly ash and the scraper 11 is increased without increasing the rotation speed of the drying trough 5 and the rotating shaft 10, which makes it easier to break up the fly ash and reduces the time required for drying. At the same time, by opening the top cover 6, the fly ash can be evenly spread into the drying trough 5 at one time, saving the time for the later dispersion of the fly ash. At the same time, by flipping the drying trough 5 and the top cover 6, and controlling the rotation of the rotating shaft 10 and the scraper 11, the discharge efficiency of the fly ash in the drying trough 5 can be improved, saving time and having a good use effect.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A fly ash drying device, characterized in that: The utility model comprises a transfer frame (1), wherein a conveyor belt (2) is arranged on the transfer frame (1), support frames (3) are arranged on both sides of the transfer frame (1), fixed frames (4) are arranged on the two support frames (3), a drying tank (5) is arranged between the two fixed frames (4), the upper end of the drying tank (5) is open, a top cover (6) is hinged at the upper end opening of the drying tank (5), the movable end of the top cover (6) is connected to the drying tank (5) through a locking member (7), a discharge port is arranged on the top cover (6), a detachable sealing plate (8) is arranged at the discharge port, through slots (9) are respectively opened at both ends of the drying tank (5), and a rotating shaft (10) is arranged inside the through slot (9) and rotatably connected to the drying tank (5), scrapers (11) are evenly arranged on the rotating shaft (10), and a rotating shaft (10) is provided with a plurality of screws (11) on the rotating shaft (10). The sum of the widths of all the scrapers (11) is not less than the shortest distance between the two through grooves (9) in the drying tank (5); one end of the rotating shaft (10) extends to the outside of one of the through grooves (9); an air inlet hole (12) is provided on the circumference of the outer surface of the other through groove (9); and an air inlet pipe (13) is also included; one end of the air inlet pipe (13) is provided with a positioning protrusion (14) that matches the air inlet hole (12); a driving mechanism is provided on both of the two support frames (3); the driving mechanism includes a driving motor (15); a first pulley (16) is provided at the output end of the driving motor (15); a second pulley (17) is provided at one end of the rotating shaft (10) located outside the drying tank (5) and the outer surface of the air inlet pipe (13); the first pulley (16) and the second pulley (17) are connected by a belt (18).

2. The fly ash drying device according to claim 1, characterized in that: A material guide plate (19) is provided on one side of the two support frames (3) close to the transfer frame (1).

3. The fly ash drying device according to claim 1, characterized in that: The bottom of the drying tank (5) is arc-shaped, and one end of the scraper (11) away from the rotating shaft (10) can contact the bottom of the drying tank (5). When one end of the scraper (11) contacts the bottom of the drying tank (5), the scraper (11) is in a bent state.

4. The fly ash drying device according to claim 3 is characterized in that: The outer surface of the scraper (11) is evenly provided with through holes (20).

5. The fly ash drying device according to any one of claims 1 to 4, characterized in that: The lower end of the top cover (6) is open, and the area of ​​the discharge opening at the upper end of the top cover (6) is smaller than the area of ​​the opening at the lower end of the top cover (6).

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