Drying device for fluidized calcination of desulfurized gypsum powder
By introducing a crushing mechanism and a spiral lifting plate into the desulfurized gypsum powder drying device, the problem of inconsistent particle size was solved, uniform heating and efficient heat transfer were achieved, and production efficiency and safety were improved.
Patent Information
- Application Number
- CN202520522304.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing desulfurized gypsum powder drying equipment lacks an effective pretreatment crushing mechanism, resulting in inconsistent particle size, difficulty in uniformly heating lumpy materials, easy clogging of equipment, affecting drying and calcination effects, and increasing maintenance costs.
Design a drying device that includes a crushing mechanism, a spiral lifting plate, and a hot air system. The crushing mechanism crushes lumpy gypsum powder into uniform particles, the spiral lifting plate realizes gas-solid two-phase fluidized heat transfer, and the hot air fan improves the heat transfer efficiency to ensure uniform heating of the material.
It achieves uniformity in material particle size, improves heat transfer efficiency, reduces the risk of equipment blockage, simplifies operation procedures, and improves production efficiency and safety.
Smart Images
Figure CN223896447U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to industrial drying technical field especially, relates to a kind of drying device for fluidized calcination of desulfurization gypsum powder. BACKGROUND
[0002] Desulfurization gypsum (also known as FGD gypsum, i.e., flue gas desulfurization gypsum) is a byproduct generated during the flue gas desulfurization process of industrial facilities such as coal-fired power plants. In order to convert this gypsum into useful building materials or other applications, it is typically subjected to a calcination process to remove moisture therefrom and improve its physical properties.
[0003] Currently, some drying devices for desulfurization gypsum powder often lack effective pretreatment crushing mechanisms, resulting in inconsistent particle sizes of desulfurization gypsum powder entering the drum. Blocky materials are not only difficult to heat uniformly, but also can block the equipment. Due to the uneven particle size, some materials cannot be fully contacted with hot air, resulting in poor drying and calcination effects, which affects the quality of the final product. In addition, large pieces of material are prone to jamming in the feed inlet or drum, increasing equipment maintenance costs and downtime.
[0004] Therefore, there is an urgent need to design a drying device for fluidized calcination of desulfurization gypsum powder. SUMMARY
[0005] In order to overcome the shortcomings of the prior art, the utility model provides a drying device for fluidized calcination of desulfurization gypsum powder.
[0006] The technical scheme of the utility model is: a drying device for fluidized calcination of desulfurization gypsum powder, comprising a support, a bottom plate, a first vertical plate, a second vertical plate, a drum, a gear ring, a first gear, a first motor, a feed hopper, a hot air blower and a crushing mechanism. The bottom plate is arranged on the upper part of the support. The first vertical plate is arranged on the front side of the upper part of the bottom plate. The first vertical plate is provided with a feed inlet on one side of the upper part. The second vertical plate is arranged on the rear side of the upper part of the bottom plate. The drum is rotatably installed between the first vertical plate and the second vertical plate. The gear ring is arranged on one side of the outer part of the drum. The first gear is rotatably arranged on one side of the lower part of the first vertical plate. The first gear is rotatably engaged with the adjacent gear ring. The first motor is installed on one side of the upper part of the bottom plate. The output shaft of the first motor is connected with the central shaft of the first gear. The feed hopper is arranged on one side of the upper part of the first vertical plate. The lower end of the feed hopper is connected with the feed inlet. The hot air blower is installed on one side of the upper part of the second vertical plate. The hot air outlet of the hot air blower inputs into the second vertical plate and flows into the inner part of the drum. The second vertical plate is provided with a discharge outlet on one side of the lower part. The crushing mechanism for pretreating desulfurization gypsum powder is arranged on the feed hopper.
[0007] In one embodiment, the lower part of the support is provided with a hollow steady reinforcing structure.
[0008] In one embodiment, it further comprises a spiral lifting plate, and a plurality of spiral lifting plates are symmetrically arranged on the inner wall surface of the drum in the circumferential direction.
[0009] In one of the embodiments, the upper part of the feeding hopper is in the shape of an expanding quadrangular pyramid, and the lower part is inclined to the front of the first vertical plate.
[0010] In one of the embodiments, the crushing mechanism comprises a second motor, a grinding roller set and second gears, the second motor is installed on one side of the outer part of the feeding hopper, the output shaft of the second motor extends into the inner part of the feeding hopper, the grinding roller set is rotatably installed on the upper part of the inner part of the feeding hopper, the grinding roller set is composed of two grinding knife rollers close to each other, the central shaft of one of the grinding knife rollers is connected with the output shaft of the second motor, two second gears are rotatably arranged on the other side of the outer part of the feeding hopper, and the two second gears are connected with the end parts of the central shafts of the corresponding grinding knife rollers.
[0011] In one of the embodiments, the discharge port protrudes below the second vertical plate at the rear part and is in the shape of an inclination.
[0012] 1. The second motor drives the two grinding knife rollers to rotate in opposite directions to crush the blocky gypsum powder into uniform particles, improves the crushing efficiency and ensures the consistency of the particle size of the material; the high-temperature airflow generated by the air heater is sent into the inner part of the roller through the hot air outlet of the second vertical plate and directly acts on the falling gypsum powder particles, further enhancing the heat transfer effect; the first motor drives the roller to rotate, and the second motor drives the grinding roller set to crush the material, and the two work cooperatively to realize the automatic production process, reduce the need for manual intervention and improve the production efficiency.
[0013] 2. The lifting plate continuously lifts and freely drops the material when the roller rotates, forms a continuous throwing and spreading movement, increases the contact area of the material and the hot air, realizes the gas-solid two-phase flow heat transfer and significantly improves the heat transfer efficiency.
[0014] 3. The upper part of the feeding hopper is in the shape of an expanding quadrangular pyramid, facilitating feeding; the lower part is inclined to the front of the first vertical plate, ensuring smooth feeding of the material and simplifying the operation steps; the discharge port is in the shape of an inclination and protrudes below the second vertical plate at the rear part, preventing the material from splashing back, facilitating the collection system to receive the calcined gypsum powder and improving the safety of the operation. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a perspective view of the utility model.
[0016] Figure 2 It is a sectional view of the bottom plate, the roller and the feeding hopper and other components of the utility model.
[0017] Figure 3 It is a perspective view of the bracket, the bottom plate and the first vertical plate and other components of the utility model.
[0018] Figure 4This is a three-dimensional structural diagram of the roller, spiral lifting plate, and gear ring components of this utility model.
[0019] The following are marked in the diagram: 1. Support, 2. Base plate, 3. First vertical plate, 31. Feed inlet, 4. Second vertical plate, 5. Roller, 51. Spiral lifting plate, 6. Gear ring, 7. First gear, 8. First motor, 9. Feed hopper, 10. Second motor, 11. Grinding roller assembly, 12. Second gear, 13. Hot air blower, 14. Discharge outlet. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example: A drying device for fluidized bed calcination of desulfurized gypsum powder, such as... Figures 1-4 As shown, the device includes a support frame 1, a base plate 2, a first vertical plate 3, a second vertical plate 4, a roller 5, a gear ring 6, a first gear 7, a first motor 8, a feed hopper 9, a hot air blower 13, and a crushing mechanism. The lower part of the support frame 1 has a hollowed-out, stabilizing and reinforcing structure. This structure reduces equipment vibration and improves overall stability. The base plate 2 is located on the upper part of the support frame 1. The first vertical plate 3 is located on the front upper part of the base plate 2, and a feed inlet 31 is located on one side of the upper part of the first vertical plate 3. The second vertical plate 4 is located on the rear upper part of the base plate 2. A roller 5 is rotatably mounted between the first vertical plate 3 and the second vertical plate 4. The base plate 2 serves as a load-bearing base, fixing the first vertical plate 3, the second vertical plate 4, and the roller 5 to ensure stable equipment operation. A gear ring 6 is located on one side of the outer edge of the roller 5, and a first gear is rotatably mounted on one side of the lower part of the first vertical plate 3. 7. The first gear 7 meshes with the adjacent gear ring 6. The drum 5, as the calcining body, rotates at a constant speed through the meshing of the gear ring 6 and the first gear 7, driving the internal material to move. The first motor 8 is installed on one side of the upper part of the bottom plate 2. The output shaft of the first motor 8 is connected to the central shaft of the first gear 7. The feed hopper 9 is provided on one side of the upper part of the first vertical plate 3. The upper part of the feed hopper 9 is an expanded quadrangular pyramid shape, and the lower part is inclined towards the front of the first vertical plate 3. The lower end of the feed hopper 9 is connected to the feed port 31. The hot air fan 13 is installed on one side of the upper part of the second vertical plate 4. The hot air outlet of the hot air fan 13 is input into the second vertical plate 4 and flows into the inside of the drum 5. The discharge port 14 is opened on one side of the lower part of the second vertical plate 4. The discharge port 14 protrudes to the lower part of the second vertical plate 4 and is inclined. The feed hopper 9 is equipped with a crushing mechanism for pre-treated desulfurized gypsum powder.
[0022] like Figure 2 and Figure 4As shown, it also includes a spiral lifting plate 51. Multiple spiral lifting plates 51 are symmetrically arranged circumferentially on the inner wall of the drum 5. The spiral lifting plates 51 continuously lift the material to a high area and then let it fall freely, forming a continuous throwing motion to reduce the agglomeration rate.
[0023] like Figures 1-3 As shown, the crushing mechanism includes a second motor 10, a grinding roller assembly 11, and a second gear 12. The second motor 10 is installed on one side of the outside of the feed hopper 9, and the output shaft of the second motor 10 rotatably extends into the inside of the feed hopper 9. The grinding roller assembly 11 is rotatably installed in the upper part of the feed hopper 9. The grinding roller assembly 11 consists of two grinding cutter rollers that are close to each other. The central shaft of one grinding cutter roller is connected to the output shaft of the second motor 10. Two rotating meshing second gears 12 are rotatably arranged on the other side of the outside of the feed hopper 9. The two second gears 12 are respectively connected to the ends of the central shafts of the corresponding grinding cutter rollers. The second motor 10 drives the active grinding cutter roller through the gearbox, and the second gears 12 mesh with and drive the driven cutter roller to ensure that the two rollers rotate synchronously in opposite directions.
[0024] In use, first turn on the hot air blower 13 to preheat to a suitable temperature, then start the first motor 8. The first motor 8 drives the gear ring 6 to rotate through the first gear 7, making the drum 5 rotate at a uniform speed. The pre-treated desulfurized gypsum powder enters the inside of the drum 5 through the inclined feed inlet 31. Start the second motor 10 to drive the grinding roller group 11 to rotate at high speed. The two meshing grinding rollers rotate in opposite directions to crush the blocky gypsum powder to a particle size. The meshing transmission of the second gear 12 ensures that the speed of the two rollers is synchronized. At the same time, the inner wall of the drum 5 circumferentially... The spiral lifting plate 51 continuously lifts the material to a high zone and then allows it to fall freely, forming a continuous throwing motion. Then, the hot air fan 13 is activated to generate a high-temperature airflow, which is sent into the drum 5 through the hot air outlet of the second vertical plate 4. The hot air comes into full contact with the falling gypsum powder particles, realizing gas-solid two-phase fluidized heat transfer. The special curved surface design of the spiral lifting plate 51 generates a vortex effect, extending the residence time of the material in the high-temperature zone. The calcined gypsum powder slides into the collection system through the inclined discharge port 14. The protruding design of the discharge port 14 prevents the material from splashing back.
[0025] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.
Claims
1. A drying device for fluidized bed calcination of desulfurized gypsum powder, characterized in that: The system includes a support frame (1), a base plate (2), a first vertical plate (3), a second vertical plate (4), a drum (5), a gear ring (6), a first gear (7), a first motor (8), a feed hopper (9), a hot air blower (13), and a crushing mechanism. The support frame (1) is equipped with a base plate (2) on its upper part. The first vertical plate (3) is located on the front side of the upper part of the base plate (2). A feed inlet (31) is opened on one side of the upper part of the first vertical plate (3). The second vertical plate (4) is located on the rear side of the upper part of the base plate (2). A drum (5) is rotatably mounted between the first vertical plate (3) and the second vertical plate (4). A gear ring (6) is located on one side of the outer part of the drum (5). A gear ring (6) is rotatably mounted on one side of the lower part of the first vertical plate (3). A first gear (7) is provided, which meshes with the adjacent gear ring (6). A first motor (8) is installed on one side of the upper part of the base plate (2). The output shaft of the first motor (8) is connected to the central shaft of the first gear (7). A feed hopper (9) is provided on one side of the upper part of the first vertical plate (3). The lower end of the feed hopper (9) is connected to the feed inlet (31). A hot air blower (13) is installed on one side of the upper part of the second vertical plate (4). The hot air outlet of the hot air blower (13) is input into the second vertical plate (4) and flows into the inside of the drum (5). A discharge port (14) is opened on one side of the lower part of the second vertical plate (4). A crushing mechanism for pre-treated desulfurized gypsum powder is provided on the feed hopper (9).
2. The drying device for fluidized bed calcination of desulfurized gypsum powder as described in claim 1, characterized in that: The lower part of the bracket (1) is provided with a hollowed-out sturdy reinforcement structure.
3. The drying device for fluidized bed calcination of desulfurized gypsum powder as described in claim 2, characterized in that: It also includes a spiral lifting plate (51), and multiple spiral lifting plates (51) are symmetrically arranged on the inner wall of the drum (5) along the circumference.
4. A drying device for fluidized bed calcination of desulfurized gypsum powder as described in claim 3, characterized in that: The upper part of the feed hopper (9) is an expanded quadrangular pyramid shape, and the lower part is inclined towards the front of the first vertical plate (3).
5. A drying device for fluidized bed calcination of desulfurized gypsum powder as described in claim 4, characterized in that: The crushing mechanism includes a second motor (10), a grinding roller assembly (11), and a second gear (12). The second motor (10) is installed on one side of the outside of the feed hopper (9). The output shaft of the second motor (10) rotates and extends into the inside of the feed hopper (9). The grinding roller assembly (11) is rotatably installed in the upper part of the feed hopper (9). The grinding roller assembly (11) consists of two grinding rollers that are close to each other. The central shaft of one grinding roller is connected to the output shaft of the second motor (10). Two rotating meshing second gears (12) are rotatably arranged on the other side of the outside of the feed hopper (9). The two second gears (12) are respectively connected to the ends of the central shafts of the corresponding grinding rollers.
6. A drying device for fluidized bed calcination of desulfurized gypsum powder as described in claim 5, characterized in that: The discharge port (14) protrudes below the second vertical plate (4) at the rear and is inclined.