A paddle dryer for desulfurized gypsum

Abstract

This utility model provides a paddle dryer for desulfurized gypsum, belonging to the technical field of dryers. It includes a base frame, to which a drying shell is fixedly connected via a support plate. Two hollow shafts are symmetrically and rotatably connected within the drying shell. Two sets of paddle blocks are fixedly connected at equal intervals on the two hollow shafts. A meshing first gear is fixedly connected to one end of each hollow shaft on the same side. A bearing plate is fixedly connected to the upper surface of the base frame near the first gear, and a reducer is fixedly connected to the upper surface of the bearing plate. This utility model, through its purification cylinder, bearing ring, mounting ring, activated carbon plate, and reduction mechanism, achieves the adsorption of harmful gases in the gas discharged during the drying process. It can reduce the activated carbon plate, restoring its adsorption capacity and ensuring subsequent adsorption capacity for continuous use. This solves the problem in existing technologies where activated carbon becomes saturated and inconvenient for absorbing subsequent harmful gases.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and more specifically, to a paddle dryer for desulfurized gypsum. Background Technology

[0002] As a highly efficient indirect heating drying equipment, the paddle dryer has promising applications in the drying of desulfurized gypsum. It uses the rotation of paddles to stir and transport materials, while a heat medium (such as steam or heat transfer oil) flows within the hollow shaft and paddles, transferring heat to the materials to achieve the drying purpose.

[0003] A search revealed that patent application CN202020387267.1 discloses a paddle dryer for desulfurized gypsum, comprising a body, rotating blades disposed within the body, and an inlet, outlet, and discharge port disposed on the body. A filter mechanism communicating with the discharge port is located in the upper part of the body cavity. The filter mechanism includes a partition and three identical filter devices. The partition is located in the upper part of the cavity to separate the cavity of the rotating blades from the discharge port. The partition has evenly spaced through-holes from left to right. The three filter devices are sealed and connected at their corresponding through-holes. Each filter device includes a mounting box extending through both ends and a filter layer disposed within the mounting box. The filter layer, from bottom to top, consists of a water-absorbing layer, a fine-pore sponge layer, an air dust filter layer, and an activated carbon adsorption layer. This invention can filter the emitted air, improving air purification efficiency, but it still has the following drawbacks:

[0004] (1) In the existing technology, activated carbon is used to absorb harmful gases in the exhaust gas. After a long period of use, the activated carbon becomes saturated and it is inconvenient to absorb harmful gases in the subsequent gas. It is also inconvenient to reduce the activated carbon, resulting in poor sustainability.

[0005] (2) In the long-term use of existing dryers, desulfurized gypsum will remain and adhere inside the dryer, which will not only affect the normal operation of the equipment, but also reduce the drying efficiency and make it inconvenient to clean the inside of the dryer.

[0006] Therefore, we have made improvements to this and proposed a paddle dryer for desulfurized gypsum. Utility Model Content

[0007] The purpose of this invention is to address the current problems of inconvenience in reducing activated carbon and cleaning the inside of the dryer.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] A paddle dryer for desulfurized gypsum is used to improve the above problems.

[0010] The present invention is as follows:

[0011] The device includes a base frame, to which a drying shell is fixedly connected via a support plate. Two hollow shafts are symmetrically and rotatably connected within the drying shell. Two sets of paddle blocks are fixedly connected at equal intervals on the two hollow shafts. A first gear is fixedly connected to one end of each hollow shaft on the same side, engaging with it. A support plate is fixedly connected to the upper surface of the base frame near the first gear. A reducer is fixedly connected to the upper surface of the support plate. A second gear, meshing with the first gear, is fixedly connected to the output end of the reducer via a connecting shaft. A driven pulley is fixedly connected to the input end of the reducer. A first motor is fixedly connected to the upper surface of the support plate. A driving pulley is fixedly connected to the drive end of the first motor. The driving pulley is connected to the driven pulley via a synchronous belt. The drying shell is connected by a drive pulley. A discharge port is fixedly connected to the bottom of the drying shell at the end furthest from the first gear. A shell cover is fixedly connected to the upper surface of the drying shell. A feed port is fixedly connected to the upper surface of the shell cover at the end closest to the first gear. A dehumidification pipe is fixedly connected to the upper surface of the shell cover. A purification cylinder is fixedly connected to the upper surface of the dehumidification pipe. A bearing ring is fixedly connected inside the purification cylinder. An installation ring is detachably connected to the bearing ring via hexagonal bolts. An activated carbon plate is fixedly connected inside the installation ring. A reduction mechanism for reducing the activated carbon plate is provided inside the purification cylinder. A top cover is detachably connected to the upper surface of the purification cylinder via bolt assemblies. A discharge pipe is fixedly connected to the upper surface of the top cover. A spray cleaning mechanism is provided inside the shell cover.

[0012] As a preferred technical solution of this utility model, the reduction mechanism includes a support plate fixed inside the purification cylinder. A bearing is fixedly connected to the center of the lower end face of the support plate. A connecting pipe is fixedly connected to the inner side wall of the inner ring of the bearing. The top end of the connecting pipe passes through the support plate and is fixedly connected to a spray pipe. A set of air outlets are evenly fixedly connected to the spray pipe. An air supply pipe is inserted into the bottom of the connecting pipe. The outer end of the air supply pipe passes through the purification cylinder and extends to the outside. A connecting plate is fixedly connected to the air supply pipe. The top end of the connecting plate is fixedly connected to the lower end face of the support plate.

[0013] As a preferred technical solution of this utility model, a driven bevel gear is fixedly connected to the bottom outer peripheral sidewall of the connecting pipe, an mounting plate is fixedly connected to the lower end face of the support plate, a rotating rod is rotatably connected to the mounting plate, an active bevel gear that meshes with the driven bevel gear is fixedly connected to the inner end of the rotating rod, the outer end of the rotating rod passes through the purification cylinder and extends to the outside, a support frame is provided on the outer side of the outer end of the rotating rod, the support frame is fixedly connected to the purification cylinder, a second motor is fixedly connected to the support frame, and the drive end of the second motor is fixedly connected to the outer end of the rotating rod.

[0014] As a preferred technical solution of this utility model, the spray cleaning mechanism includes two water supply pipes that are symmetrically fixed inside the shell cover. A set of high-pressure nozzles are fixedly connected to the two water supply pipes at equal intervals, and an inlet pipe is fixedly connected between the input ends of the two water supply pipes.

[0015] As a preferred technical solution of this utility model, the outer sides of the driven pulley and the driving pulley are provided with protective covers, and the protective covers are fixedly connected to the bearing plate.

[0016] As a preferred technical solution of this utility model, a sealing ring is fixedly connected to the upper end face of the purification cylinder, and the sealing ring is evenly provided with insertion holes that match the bolts in the bolt assembly.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the solution of this utility model:

[0019] 1. By setting up a purification cylinder, a support ring, a mounting ring, an activated carbon plate, and a reduction mechanism, the harmful gases in the gas discharged during the drying process are adsorbed. The activated carbon plate can be reduced to restore its adsorption capacity, ensuring subsequent adsorption capacity and continuous use. This solves the problem in the existing technology where activated carbon adsorption is saturated and it is inconvenient to absorb subsequent harmful gases.

[0020] 2. The spray cleaning mechanism enables water to be sprayed out in high pressure to clean the inside of the dryer, removing impurities such as desulfurized gypsum remaining during the drying process, facilitating normal operation of the equipment, improving drying efficiency, and solving the problem of inconvenience in cleaning the dryer in the existing technology. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2 A schematic diagram of the separation structure provided by this utility model;

[0023] Figure 3 A schematic diagram illustrating the separation of the purification cylinder and the top cover provided by this utility model;

[0024] Figure 4 A schematic diagram of the reduction mechanism provided by this utility model;

[0025] Figure 5 This is a front view structural diagram of the present invention;

[0026] Figure 6 A structural schematic diagram from another perspective of this utility model.

[0027] The image shows:

[0028] 1. Base frame; 2. Support plate; 3. Drying shell; 4. Hollow shaft; 5. Paddle block; 6. First gear; 7. Bearing plate; 8. Reducer; 9. Connecting shaft; 10. Second gear; 11. Driven pulley; 12. First motor; 13. Drive pulley; 14. Synchronous belt; 15. Discharge port; 16. Shell cover; 17. Inlet; 18. Exhaust pipe; 19. Purification cylinder; 20. Bearing ring; 21. Mounting ring; 22. Activated carbon plate; 23. Reduction mechanism; 2301. Support plate; 2302. Bearing; 2303, Connecting pipe; 2304, Spray nozzle; 2305, Air outlet; 2306, Air supply pipe; 2307, Connecting plate; 2308, Driven bevel gear; 2309, Mounting plate; 2310, Rotating rod; 2311, Driving bevel gear; 2312, Support frame; 2313, Second motor; 24, Top cover; 25, Discharge pipe; 26, Spray cleaning mechanism; 2601, Water supply pipe; 2602, High-pressure nozzle; 2603, Water inlet pipe; 27, Protective cover; 28, Sealing ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, this embodiment proposes a paddle dryer for desulfurized gypsum, including a base frame 1. A drying shell 3 is fixedly connected to the base frame 1 via a support plate 2. Two hollow shafts 4 are symmetrically and rotatably connected inside the drying shell 3. Two sets of paddle blocks 5 are fixedly connected at equal intervals on the two hollow shafts 4. A first gear 6 is fixedly connected to one end of each hollow shaft 4 on the same side, engaging with it. A bearing plate 7 is fixedly connected to the upper surface of the base frame 1 near the first gear 6. A reducer 8 is fixedly connected to the upper surface of the bearing plate 7. A second gear 10, engaging with the first gear 6, is fixedly connected to the output end of the reducer 8 via a connecting shaft 9. A driven pulley 11 is fixedly connected to the input end of the reducer 8. A first motor 12 is fixedly connected to the upper end face of plate 7. A drive pulley 13 is fixedly connected to the drive end of the first motor 12. The drive pulley 13 is connected to the driven pulley 11 via a synchronous belt 14. A discharge port 15 is fixedly connected to the bottom of the drying shell 3 at the end away from the first gear 6. A shell cover 16 is fixedly connected to the upper end face of the drying shell 3. A feed inlet 17 is fixedly connected to the upper end face of the shell cover 16 near the first gear 6. A dehumidification pipe 18 is fixedly connected to the upper end face of the shell cover 16. A purification cylinder 19 is fixedly connected to the upper end face of the dehumidification pipe 18. A bearing ring 20 is fixedly connected inside the purification cylinder 19. A mounting ring 21 is detachably connected to the bearing ring 20 via an internal hex bolt. An activated carbon plate 22 is fixedly connected inside the purification cylinder 19. A reduction mechanism 23 for reducing the activated carbon plate 22 is provided inside the purification cylinder 19. A top cover 24 is detachably connected to the upper end face of the purification cylinder 19 via a bolt assembly. A discharge pipe 25 is fixedly connected to the upper end face of the top cover 24. A spray cleaning mechanism 26 is provided inside the shell cover 16. The first motor 12 drives the drive pulley 13 to rotate. The drive pulley 13 drives the driven pulley 11 to rotate via a synchronous belt 14. The driven pulley 11 drives the reducer 8 to work. After the reducer 8 reduces the high-speed rotation transmitted from the driven pulley 11, it drives the second gear 10 to rotate via the connecting shaft 9. The second gear 10 meshes with the first gear 6, thereby driving the two hollow shafts. 4. The hollow shaft 4 drives the paddle block 5 to rotate, realizing the stirring and conveying of desulfurized gypsum. It is worth noting that the heating method of the hollow shaft 4 and the paddle block 5 for the material is existing technology and will not be described in detail here. The desulfurized gypsum enters the drying shell 3 from the feed port 17. During the rotation of the two hollow shafts 4 and the paddle block 5, the desulfurized gypsum is continuously stirred and conveyed to realize the drying process. The dried desulfurized gypsum is discharged from the discharge port 15. The moisture generated during the drying process enters the purification cylinder 19 through the exhaust pipe 18. After entering the purification cylinder 19, the moisture is adsorbed and purified by the activated carbon plate 22 to remove harmful substances and odors. The purified gas is discharged from the discharge pipe 25.

[0031] like Figure 3 and Figure 4As shown, in a preferred embodiment, based on the above method, the reduction mechanism 23 further includes a support plate 2301 fixed inside the purification cylinder 19. A bearing 2302 is fixedly connected to the center of the lower end face of the support plate 2301. A connecting pipe 2303 is fixedly connected to the inner side wall of the inner ring of the bearing 2302. The top end of the connecting pipe 2303 passes through the support plate 2301 and is fixedly connected to a spray pipe 2304. A set of air outlets 2305 are evenly fixedly connected to the spray pipe 2304. A gas supply outlet is inserted into the bottom of the connecting pipe 2303. The gas supply pipe 2306 extends outwards through the purification cylinder 19. A connecting plate 2307 is fixedly connected to the gas supply pipe 2306, and the top of the connecting plate 2307 is fixedly connected to the lower end face of the support plate 2301. The outer end of the gas supply pipe 2306 is connected to the reducing gas supply equipment. The gas supply pipe 2306 delivers reducing gas into the connecting pipe 2303, and then sprays it out through the nozzle 2304 and the outlet 2305 to reduce the activated carbon plate 22, restore its adsorption capacity, and allow for continuous use.

[0032] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, a driven bevel gear 2308 is fixedly connected to the bottom outer peripheral sidewall of the connecting pipe 2303, a mounting plate 2309 is fixedly connected to the lower end face of the support plate 2301, a rotating rod 2310 is rotatably connected to the mounting plate 2309, a driving bevel gear 2311 that meshes with the driven bevel gear 2308 is fixedly connected to the inner end of the rotating rod 2310, the outer end of the rotating rod 2310 penetrates the purification cylinder 19 and extends to the outside, and a support frame 2312 is provided on the outer side of the outer end of the rotating rod 2310. 2 is fixedly connected to the purification cylinder 19. A second motor 2313 is fixedly connected to the support frame 2312. The driving end of the second motor 2313 is fixedly connected to the outer end of the rotating rod 2310. The second motor 2313 drives the rotating rod 2310 to rotate. The active bevel gear 2311 on the rotating rod 2310 meshes with the driven bevel gear 2308, driving the driven bevel gear 2308 to rotate. This causes the connecting pipe 2303 to rotate on the inner side wall of the inner ring of the bearing 2302, thereby driving the nozzle 2304 and the gas outlet 2305 to rotate, so as to facilitate and fully contact the reducing gas with the activated carbon plate 22.

[0033] like Figure 1 and Figure 2As shown, in a preferred embodiment, based on the above method, the spray cleaning mechanism 26 further includes two water supply pipes 2601 symmetrically fixed inside the shell cover 16. A set of high-pressure nozzles 2602 are fixedly connected to the two water supply pipes 2601 at equal intervals. A water inlet pipe 2603 is fixedly connected between the input ends of the two water supply pipes 2601. The water inlet pipe 2603 is connected to the cleaning water source and delivers water to the two water supply pipes 2601. The high-pressure nozzles 2602 spray water in a high-pressure form to clean the inside of the drying shell 3 and remove impurities such as desulfurized gypsum remaining during the drying process.

[0034] like Figure 1 As shown, in a preferred embodiment, based on the above method, a protective cover 27 is further provided on the outer side of the driven pulley 11 and the driving pulley 13, and the protective cover 27 is fixedly connected to the bearing plate 7; the protective cover 27 plays a protective role and prevents personnel from accidentally touching the pulley and causing injury.

[0035] like Figure 1 and Figure 3 As shown, in a preferred embodiment, based on the above method, a sealing ring 28 is fixedly connected to the upper end face of the purification cylinder 19. The sealing ring 28 has evenly distributed insertion holes that match the bolts in the bolt assembly. When the top cover 24 is connected to the purification cylinder 19 through the bolt assembly, the sealing ring 28 plays a sealing role to prevent gas leakage inside the purification cylinder 19.

[0036] Specifically, in operation, the paddle dryer for desulfurized gypsum works as follows: The first motor 12 drives the drive pulley 13 to rotate. The drive pulley 13 drives the driven pulley 11 to rotate via the synchronous belt 14. The driven pulley 11 drives the reducer 8. The reducer 8 reduces the high-speed rotation from the driven pulley 11 and then drives the second gear 10 to rotate via the connecting shaft 9. The second gear 10 meshes with the first gear 6, thereby driving the two hollow shafts 4 to rotate. The hollow shafts 4 drive the paddle blocks 5 to rotate. The desulfurized gypsum enters the drying chamber 3 through the feed inlet 17. During the rotation of the paddle blocks 5 driven by the two hollow shafts 4, the desulfurized gypsum is continuously stirred and conveyed, achieving the drying process. The dried desulfurized gypsum is discharged from the discharge outlet 15. The moisture generated during the drying process enters the purification cylinder 19 through the exhaust pipe 18. After entering the purification cylinder 19, the moisture is adsorbed and purified by the activated carbon plate 22, removing harmful substances and odors. The gas is discharged from the discharge pipe 25. When the activated carbon plate 22 needs to be reduced, the gas supply pipe 2306 delivers the reducing gas to the connecting pipe 2303, and then sprays it out through the nozzle 2304 and the gas outlet 2305. At the same time, the second motor 2313 drives the rotating rod 2310 to rotate. The driving bevel gear 2311 on the rotating rod 2310 meshes with the driven bevel gear 2308, driving the driven bevel gear 2308 to rotate. This causes the connecting pipe 2303 to rotate on the inner side wall of the inner ring of the bearing 2302, which in turn drives the nozzle 2304 and the gas outlet 2305 to rotate, so that the reducing gas is fully delivered to the activated carbon plate 22 for reduction treatment. When the drying shell 3 needs to be cleaned, the water inlet pipe 2603 is connected to the cleaning water source, and the water is delivered to the two water supply pipes 2601. The high-pressure nozzle 2602 sprays the water in a high-pressure form to clean the inside of the drying shell 3 and remove impurities such as desulfurized gypsum remaining during the drying process.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A paddle dryer for desulfurized gypsum comprising a base frame (1), characterized in that, The bottom frame (1) is fixedly connected to a drying shell (3) via a support plate (2). Two hollow shafts (4) are symmetrically and rotatably connected inside the drying shell (3). Two sets of blade blocks (5) are fixedly connected at equal intervals on the two hollow shafts (4). A meshing first gear (6) is fixedly connected to one end of each of the two hollow shafts (4). A bearing plate (7) is fixedly connected to the upper surface of the bottom frame (1) near the first gear (6). A reduction gear is fixedly connected to the upper surface of the bearing plate (7). The reducer (8) has a second gear (10) fixedly connected to the output end of the reducer (8) via a connecting shaft (9) and meshing with the first gear (6). The input end of the reducer (8) is fixedly connected to a driven pulley (11). The upper end of the bearing plate (7) is fixedly connected to a first motor (12). The drive end of the first motor (12) is fixedly connected to a driving pulley (13). The driving pulley (13) is connected to the driven pulley (11) via a synchronous belt (14). A discharge port (15) is fixedly connected to the bottom of the drying shell (3) at the end away from the first gear (6). A shell cover (16) is fixedly connected to the upper end face of the drying shell (3). A feed port (17) is fixedly connected to the upper end face of the shell cover (16) at the end near the first gear (6). A dehumidification pipe (18) is fixedly connected to the upper end face of the shell cover (16). A purification cylinder (19) is fixedly connected to the upper end face of the dehumidification pipe (18). A bearing ring (20) is fixedly connected inside the purification cylinder (19). The bearing ring (20) is detachably connected to the mounting ring (21) by an internal hex bolt. An activated carbon plate (22) is fixedly connected inside the mounting ring (21). The purification cylinder (19) is provided with a reduction mechanism (23) for reducing the activated carbon plate (22). The upper end face of the purification cylinder (19) is detachably connected to the top cover (24) by a bolt assembly. The upper end face of the top cover (24) is fixedly connected to the discharge pipe (25). The shell cover (16) is provided with a spray cleaning mechanism (26).

2. The paddle dryer for desulfurized gypsum according to claim 1, characterized by The reduction mechanism (23) includes a support plate (2301) fixed inside the purification cylinder (19). A bearing (2302) is fixedly connected to the center of the lower end face of the support plate (2301). A connecting pipe (2303) is fixedly connected to the inner side wall of the inner ring of the bearing (2302). The top end of the connecting pipe (2303) passes through the support plate (2301) and is fixedly connected to a spray pipe (2304). A set of air outlets (2305) are evenly fixedly connected to the spray pipe (2304). An air supply pipe (2306) is inserted into the bottom of the connecting pipe (2303). The outer end of the air supply pipe (2306) passes through the purification cylinder (19) and extends to the outside. A connecting plate (2307) is fixedly connected to the air supply pipe (2306). The top end of the connecting plate (2307) is fixedly connected to the lower end face of the support plate (2301).

3. A paddle dryer for desulfurized gypsum according to claim 2, characterized in that, A driven bevel gear (2308) is fixedly connected to the bottom outer peripheral side wall of the connecting pipe (2303). A mounting plate (2309) is fixedly connected to the lower end face of the support plate (2301). A rotating rod (2310) is rotatably connected to the mounting plate (2309). An active bevel gear (2311) that meshes with the driven bevel gear (2308) is fixedly connected to the inner end of the rotating rod (2310). The outer end of the rotating rod (2310) passes through the purification cylinder (19) and extends to the outside. A support frame (2312) is provided on the outer side of the outer end of the rotating rod (2310). The support frame (2312) is fixedly connected to the purification cylinder (19). A second motor (2313) is fixedly connected to the support frame (2312). The driving end of the second motor (2313) is fixedly connected to the outer end of the rotating rod (2310).

4. The paddle dryer for desulfurized gypsum according to claim 1, characterized by The spray cleaning mechanism (26) includes two water pipes (2601) that are symmetrically fixed inside the shell cover (16). A set of high-pressure nozzles (2602) are fixedly connected to the two water pipes (2601) at equal intervals. A water inlet pipe (2603) is fixedly connected between the input ends of the two water pipes (2601).

5. A paddle dryer for desulfurized gypsum according to claim 1, characterized in that, The driven pulley (11) and the driving pulley (13) are provided with protective covers (27) on their outer sides, and the protective covers (27) are fixedly connected to the bearing plate (7).

6. The paddle dryer for desulfurized gypsum according to claim 1, characterized by A sealing ring (28) is fixedly connected to the upper end face of the purification cylinder (19), and the sealing ring (28) is evenly provided with insertion holes that match the bolts in the bolt assembly.

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