Dryer with waste heat utilization function

Abstract

The utility model provides a dryer with a waste heat utilization function. The dryer comprises a machine base, a drying cylinder is arranged on the machine base, a feeding port and a discharging port are formed in the drying cylinder, the dryer further comprises a power mechanism, the power mechanism comprises a platform arranged on the machine base, and a power box is arranged on the platform; the material turning mechanism comprises a stirring arm arranged in the drying cylinder; the flue gas circulation mechanism comprises a connecting pipe arranged on the power box, the connecting pipe penetrates through the drying box and then is connected with a bearing, the bearing is connected with a main shaft, the main shaft is of a hollow structure and is communicated with a stirring arm, and air outlet holes are formed in the stirring arm. And the working efficiency is high, the structure is simple and the economy is good.

Description

Technical Field

[0001] This invention relates to the technical field of drying equipment, and specifically to a dryer with waste heat utilization function. Background Technology

[0002] Waste heat recovery from flue gas refers to the process of recovering and utilizing unused waste heat from flue gas in energy utilization equipment. It is an important way to improve economic efficiency and save fuel, significantly reducing energy consumption and environmental pollution. Waste heat from exhaust gas accounts for approximately 15% to 35% of the energy expenditure of various industrial furnaces and kilns. After purification, this waste gas becomes a high-quality energy source that is convenient to transport and use, requires no slag or dust removal after combustion, and is unlikely to cause environmental pollution. While some existing technologies exist for waste heat recovery from flue gas, their structures are overly complex and require improvement.

[0003] A patent publication number CN119042968B was found, entitled "A Flue Gas Waste Heat Recovery Device," which specifically discloses a flue gas waste heat recovery device, including a base. A shell is rotatably mounted on the upper end of the base. A tilting cylinder is coaxially rotatably mounted inside the shell. Multiple tilting ears are evenly distributed and extended on the outer surface of the tilting cylinder. The ends of the tilting ears are attached to the inner wall of the shell. A rotating shaft extends from the middle of one end of the tilting cylinder and passes through one end of the shell. The rotating shaft is rotatably engaged with the shell. A connecting shaft is connected to one end of the shell and is connected to the rotating shaft. An adjusting member is connected to one end of the connecting shaft. A pusher frame is rotatably mounted on the end of the adjusting member. A bracket is provided on the outer side of the pusher frame and is connected to the base. A locking member is provided between the pusher frame and the bracket. Preferably, an exhaust pipe is fixedly connected to the middle of the other end of the shell, and a feed pipe is fixedly connected to the upper edge of the shell. An air jet ring is coaxially arranged inside the shell, located on the side of the tilting cylinder. Two connecting pipes are symmetrically fixedly connected to the upper end of the air jet ring, and the connecting pipes pass through the upper end of the shell. An air inlet pipe is fixedly connected to the end of the connecting pipe. Preferably, a shell support frame is fixedly installed on one side of the upper end of the base. A connecting seat is embedded through the upper end of the shell support frame. A U-shaped frame is rotatably installed at the end of the connecting seat. The end of the U-shaped frame is fixed to the other end of the shell. A discharge port is provided through the lower edge of the shell. A guide hopper is provided below the discharge port. The guide hopper is inclined, and the lower end of the guide hopper is fixed to the other side of the upper end of the base. Preferably, a drive shaft is rotatably mounted at one end of the housing, the drive shaft is located behind the rotating shaft, and the drive shaft is connected to the rotating shaft. A shaft bracket is rotatably mounted on the outer surface of the connecting shaft, and the end of the shaft bracket is fixed to the housing. A fixed seat is fixedly mounted at the upper front edge of the base, and a bearing lug is embedded through the end of the fixed seat. The end of the bracket is rotatably connected to the end of the bearing lug. Preferably, connecting gears are coaxially embedded on the outer surfaces of the rotating shaft and the drive shaft, and the two connecting gears mesh. Helical gears are coaxially embedded on the other end of the rotating shaft and the connecting shaft, and the two helical gears mesh. A motor frame is fixedly mounted on one side of the housing, the motor frame is located above the drive shaft, and a servo motor is fixedly mounted at the end of the motor frame. The output end of the servo motor is fixed to the drive shaft. Preferably, the adjusting component includes a frame fixedly installed at one end of the connecting shaft, a first threaded rod rotatably installed between the upper and lower end faces of the frame, the first threaded rod passing through the lower end of the frame, an adjusting seat screwed onto the outer surface of the first threaded rod, an extension shaft extending from the end of the adjusting seat, and the end of the extension shaft rotatably connected to the upper end of the push shell frame.

[0004] Analysis of the publicly available materials shows that waste heat recovery from flue gas can be achieved. However, the drying process requires an external motor to drive the shaft rotation, resulting in significant external energy consumption and poor economic efficiency during waste heat recovery. Summary of the Invention

[0005] In view of this, the present invention provides a dryer with waste heat utilization function, which can not only realize the recovery and utilization of waste heat from flue gas, but also has high working efficiency, simple structure and good economy.

[0006] To address the aforementioned technical problems, this invention provides a dryer with waste heat utilization functionality, comprising a base, a drying cylinder mounted on the base, an inlet and an outlet on the drying cylinder, and further comprising...

[0007] The flue gas inlet pipe is connected to the flue gas duct of the heating furnace and is used for collecting the flue gas from the heating furnace.

[0008] A power mechanism, comprising a platform mounted on a base, wherein a power box is mounted on the platform;

[0009] A material turning mechanism, which includes a stirring arm disposed inside the drying cylinder;

[0010] The flue gas circulation mechanism includes a connecting pipe mounted on a power box. The connecting pipe passes through a drying box and is connected to a bearing. The bearing is connected to a main shaft, which is a hollow structure and is connected to a stirring arm. The stirring arm is provided with an air outlet.

[0011] Furthermore, the power box is a hollow cylindrical structure. Inside the power box, there is a rotating shaft coaxial with the main shaft. An inner ring is provided on the rotating shaft, and blades are provided on the outer side of the inner ring. The outer end of the blades is connected to an outer ring. The power box is also provided with a flue for receiving flue gas input. The flue gas enters the power box and drives the blades to rotate.

[0012] Furthermore, the flue and connecting pipe are located at opposite ends of the power box, which is connected to the platform via bearings and supported by uprights.

[0013] Furthermore, the number of blades is several, a group of blades connects the inner ring and the outer ring, and several layers are arranged along the axis of rotation, arranged parallel to each other, and the blades and the inner ring drive the axis of rotation to rotate.

[0014] Furthermore, the stirring arm is a pipe structure, and the stirring arm is fixedly connected to the main shaft. The main shaft is provided with a flue, which is a groove structure. An air inlet is provided in the flue, which connects to the internal channel of the main shaft and to the stirring arm. The main shaft is provided with a rotating protrusion, which is connected to a bearing. The bearing is fixed on the drying cylinder. The other end of the connecting pipe is connected to the bearing at the position corresponding to the flue and is connected to the flue for conveying flue gas into the flue.

[0015] Furthermore, the machine base is provided with a discharge mechanism, which includes a screw mounted on the machine base. The screw is horizontally positioned, and its two ends are connected by bearing seats. One end of the screw is connected to a motor fixed on the machine base and rotates under the drive of the motor. A moving block is provided on the screw, and the moving block is threadedly connected to the screw. A swing arm is hinged to the moving block, and the upper end of the swing arm is hinged to the bottom of the drying cylinder. A guide rod is also provided at the bottom of the drying cylinder, and the guide rod is inserted into the machine base and slidably connected to the machine base.

[0016] Furthermore, a fixing rod is provided on the drying cylinder, and a fixing block is sleeved on the fixing rod. The fixing block is connected to a receiving plate, and a tilting mechanism is connected to the upper end of the receiving plate. The tilting mechanism includes a pull rope connected to the receiving plate. The pull rope is connected to a steering wheel and passes through the steering wheel before being connected to a moving block. The receiving plate is located below the discharge port and is used to receive the dried material.

[0017] Furthermore, the drying cylinder is provided with cylinder caps at both ends, and the connecting pipe passes through the cylinder caps and connects to the bearing. The machine base is fixedly connected to a support frame, and the platform is set on the support frame.

[0018] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0019] 1. It can realize the recovery and utilization of waste heat from flue gas. By setting up a flue gas inlet pipe, it can be connected to the flue gas pipeline on the heating furnace. After the flue gas passes through the drying cylinder, the material is dried, thus achieving the purpose of utilizing the waste heat from the flue gas.

[0020] 2. It has high working efficiency, simple structure and good economy. By setting up a power box, and the power source in the power box is flue gas, it can further save the consumption of external energy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 A structural diagram from another perspective;

[0023] Figure 3for Figure 2 Enlarged view of A in the middle;

[0024] Figure 4 A schematic diagram of the internal structure of the drying drum and power box;

[0025] Figure 5 for Figure 4 A structural diagram from another perspective;

[0026] Figure 6 A schematic diagram of the main shaft;

[0027] Figure 7 This is a schematic diagram of the connection structure between the inner ring, blades, and outer ring.

[0028] In the diagram: 1. Base; 2. Drying cylinder; 3. Feed inlet; 4. Receiving plate; 5. Guide rod; 6. Screw; 7. Support frame; 8. Platform; 9. Smoke inlet pipe; 10. Power box; 11. Connecting pipe; 12. Fixing block; 13. Fixing rod; 14. Pull rope; 15. Steering wheel; 16. Moving block; 17. Motor; 18. Inner ring; 19. Discharge port; 20. Outer ring; 21. Blade; 22. Stirring arm; 23. Air outlet; 24. Cylinder cover; 25. Bearing; 26. Main shaft; 27. Flue; 28. Air inlet; 29. ​​Rotary protrusion. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figures 1-7 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0030] like Figures 1-7 As shown: Example

[0031] A dryer with waste heat utilization function includes a base 1, a drying cylinder 2 on the base 1, a feed inlet 3 and a discharge outlet 19 on the drying cylinder 2, a power mechanism, a flue gas inlet pipe connected to the flue gas duct of a heating furnace for collecting flue gas from the heating furnace, a platform 8 on the base 1 with a power box 10 on the platform 8, a material turning mechanism including a stirring arm 22 inside the drying cylinder 2, and a flue gas circulation mechanism including a connecting pipe 11 on the power box 10, the connecting pipe 11 passing through the drying cylinder and connected to a bearing 25, the bearing 25 being connected to a main shaft 26, the main shaft 26 being a hollow structure and connected to the stirring arm 22, and the stirring arm 22 having an air outlet 23.

[0032] In this embodiment, the drying cylinder 2 utilizes the waste heat of flue gas to dry the material. The drying cylinder 2 is equipped with an inlet 3 and an outlet 19. During the drying process, the material needs to be stirred, which is achieved through a power box 10. The power box 10 is powered by the flue gas, and the waste heat from the flue gas drives the internal mechanism to rotate. The rotation of the internal mechanism of the power box 10 drives the main shaft 26 inside the drying cylinder 2 to rotate. This design fully utilizes the waste heat effect of the flue gas. A material turning mechanism is installed inside the drying cylinder 2, including a stirring arm 22 with an air outlet 23. The material is dried using the temperature of the flue gas. Throughout the process, a flue gas circulation mechanism is required. This mechanism includes a connecting pipe 11 connected to the power box 10, with the other end of the connecting pipe 11 connected to a bearing 25. A channel is provided between the bearing 25 and the main shaft 26. Example

[0033] The power box 10 is a hollow cylindrical structure. Inside the power box 10, there is a rotating shaft coaxial with the main shaft 26. An inner ring 18 is provided on the rotating shaft. Blades 21 are provided on the outer side of the inner ring 18. The outer end of the blades 21 is connected to an outer ring 20. The power box 10 is also provided with a flue 27 for receiving flue gas input. When the flue gas enters the power box 10, it drives the blades 21 to rotate.

[0034] Unlike the above embodiments, in this embodiment, the power box 10 is a hollow structure with a cylindrical shape. A rotating shaft coaxially connected to the main shaft 26 is provided in the power box 10. An inner ring 18 is fixed on the rotating shaft, and a blade 21 is provided on the inner ring 18. The blade 21 is inclined and can be driven to rotate by the entry of flue gas. Example

[0035] The flue 27 and the connecting pipe 11 are located at opposite ends of the power box 10. The power box 10 is connected to the platform 8 through the bearing 25 and is supported by the uprights.

[0036] Unlike the above embodiments, in this embodiment, the flue 27 and the connecting pipe 11 need to be set at both ends. The flue 27 is used for flue gas to enter. After the flue gas passes through the power box 10, it drives the main shaft 26 to rotate. The flue gas after passing through the power box 10 enters the main shaft 26. Example

[0037] The number of blades 21 is several. A group of blades 21 connects the inner ring 18 and the outer ring 20, and several layers are arranged along the axis of rotation, which are parallel to each other. The blades 21 and the inner ring 18 drive the axis of rotation to rotate.

[0038] Unlike the above embodiments, in this embodiment, the inner ring 18, the blade 21 and the outer ring 20 are fixedly arranged to form a whole. There are several of these wholes arranged in parallel to each other, which can achieve a strong driving force to drive the main shaft 26 to rotate. Example

[0039] The stirring arm 22 is a pipe structure and is fixedly connected to the main shaft 26. The main shaft 26 is provided with a flue 27, which is a groove structure. An air inlet 28 is provided inside the flue 27. The flue 27 connects to the internal channel of the main shaft 26 and to the stirring arm 22. The main shaft 26 is provided with a rotating protrusion 29, which is connected to a bearing 25. The bearing 25 is fixed on the drying cylinder 2. The other end of the connecting pipe 11 is connected to the bearing 25 at the position corresponding to the flue 27 and is connected to the flue 27 for conveying flue gas into the flue 27.

[0040] Unlike the above embodiments, in this embodiment, the stirring arm 22 is designed as a pipe, and the stirring arm 22 is connected to the main shaft 26. One end of the main shaft 26 is connected to the bearing 25. A rotating protrusion 29 is provided on the main shaft 26, and the bearing 25 is connected through the rotating protrusion 29. In addition, a flue 27 is provided on the main shaft 26. The flue 27 is an annular groove structure. An air inlet 28 is provided in the flue 27. After the flue gas enters through the air inlet 28, it comes out from the stirring arm 22. Example

[0041] The base 1 is provided with a discharge mechanism, which includes a screw 6 mounted on the base 1. The screw 6 is horizontally positioned, and its two ends are connected by bearing seats 25. One end of the screw 6 is connected to a motor 17 fixed on the base 1 and rotates under the drive of the motor 17. A moving block 16 is provided on the screw 6, and the moving block 16 is threadedly connected to the screw 6. A swing arm is hinged to the moving block 16, and the upper end of the swing arm is hinged to the bottom of the drying cylinder 2. A guide rod 5 is also provided at the bottom of the drying cylinder 2. The guide rod 5 is inserted into the base 1 and slidably connected to the base 1.

[0042] Unlike the above embodiments, in this embodiment, after the material is dried, it is quickly discharged through the discharge mechanism. Specifically, a bearing 25 seat is provided on the machine base 1, and a screw 6 is connected to the bearing 25 seat. A movable block 16 is provided on the screw 6, and both are threadedly connected to the screw 6. The threads on the screw 6 are in opposite directions. There are two movable blocks 16. After the screw 6 rotates, the movable blocks 16 move simultaneously towards the middle or away from both ends. The movable blocks 16 are hinged to the bottom of the drying cylinder 2. When discharging, one end of the drying cylinder 2 can be lowered to facilitate material discharge. Example

[0043] A fixing rod 13 is provided on the drying cylinder 2, and a fixing block 12 is sleeved on the fixing rod 13. The fixing block 12 is connected to a receiving plate 4. The upper end of the receiving plate 4 is connected to a tilting mechanism. The tilting mechanism includes a pull rope 14 connected to the receiving plate 4. The pull rope 14 is connected to a steering wheel 15, and passes through the steering wheel 15 and is connected to a moving block 16. The receiving plate 4 is located below the discharge port 19 and is used to receive the dried material.

[0044] Unlike the above embodiments, in this embodiment, the tilting mechanism is automatic. When it is necessary to tilt the material, the moving block 16 moves while the pull rope 14 is released. At this time, the receiving plate 4 tilts more, which facilitates the discharge of material. Example

[0045] The drying cylinder 2 is provided with cylinder cover 24 at both ends, and the connecting pipe 11 passes through the cylinder cover 24 and is connected to the bearing 25. The base 1 is fixedly connected to the support frame 7, and the platform 8 is set on the support frame 7.

[0046] Unlike the above embodiments, in this embodiment, the cylinder cover 24 and the drying cylinder 2 are fixedly connected, which serves as support and sealing. In addition, after the flue gas passes through the drying cylinder 2, the preheating can be basically used up, and then it can be purified by water treatment.

[0047] The working method (or working principle) of this invention:

[0048] In operation, the inlet pipe 9 is connected to the flue gas duct of the heating furnace via a flexible hose. After the high-temperature flue gas enters the power box 10 through the inlet pipe 9, the blades 21 are tilted, and the high-temperature flue gas drives the blades 21 to rotate. After the blades 21 rotate, they drive the inner ring 18 and the rotating shaft to rotate. The rotating shaft and the main shaft 26 are coaxially connected. Therefore, the main shaft 26 in the drying cylinder 2 also rotates together. The flue gas after passing through the power box 10 enters the bearing 25 in the drying cylinder 2 under the action of the connecting pipe 11. The bearing 25 is provided with a hole for connecting to the connecting pipe 11. The position of this hole corresponds to the flue duct 27. So after the flue gas passes through the flue duct 27, it enters the interior of the main shaft 26 through the air inlet 28, and then exits through the air outlet 23 on the stirring arm 22, which simultaneously stirs and dries the material. This method can fully realize the contact between the waste heat of the flue gas and the material.

[0049] In this invention, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dryer with waste heat utilization function, comprising a base (1), wherein a drying cylinder (2) is disposed on the base (1), and the drying cylinder (2) is provided with a feed inlet (3) and a discharge outlet (19), characterized in that: It also includes, The flue gas inlet pipe (9) is connected to the flue gas pipe of the heating furnace and is used for collecting the flue gas of the heating furnace. The power mechanism includes a platform (8) mounted on a base (1), and a power box (10) is mounted on the platform (8); The material turning mechanism includes a stirring arm (22) disposed inside the drying cylinder (2); The flue gas circulation mechanism includes a connecting pipe (11) installed on the power box (10). The connecting pipe (11) passes through the drying box and is connected to a bearing (25). The bearing (25) is connected to a main shaft (26). The main shaft (26) is a hollow structure and is connected to a stirring arm (22). The stirring arm (22) is provided with an air outlet (23).

2. A dryer with waste heat utilization function according to claim 1, characterized in that: The power box (10) is a hollow cylindrical structure. Inside the power box (10) is a rotating shaft coaxial with the main shaft (26). An inner ring (18) is provided on the rotating shaft. A blade (21) is provided on the outer side of the inner ring (18). An outer ring (20) is connected to the outer end of the blade (21). The power box (10) is also provided with a flue (27) for receiving flue gas input. The flue gas enters the power box (10) and drives the blade (21) to rotate.

3. A dryer with waste heat utilization function according to claim 2, characterized in that: The flue (27) and the connecting pipe (11) are located at opposite ends on the power box (10). The power box (10) is connected to the platform (8) through the bearing (25) and supported by the upright.

4. A dryer with waste heat utilization function according to claim 3, characterized in that: The number of blades (21) is several. A group of blades (21) connects the inner ring (18) and the outer ring (20), and several layers are arranged along the axis of rotation, arranged in parallel to each other. The blades (21) and the inner ring (18) drive the axis of rotation to rotate.

5. A dryer with waste heat utilization function according to claim 4, characterized in that: The stirring arm (22) is a pipe structure and is fixedly connected to the main shaft (26). The main shaft (26) is provided with a flue (27), which is a groove structure. An air inlet (28) is provided in the flue (27). The flue (27) is connected to the internal channel of the main shaft (26) and to the stirring arm (22). The main shaft (26) is provided with a rotating protrusion (29), which is connected to a bearing (25). The bearing (25) is fixed on the drying cylinder (2). The other end of the connecting pipe (11) is connected to the bearing (25) at the position corresponding to the flue (27) and is connected to the flue (27) for conveying flue gas into the flue (27).

6. A dryer with waste heat utilization function according to claim 5, characterized in that: The machine base (1) is provided with a discharge mechanism, which includes a screw (6) set on the machine base (1). The screw (6) is set horizontally, and the two ends of the screw (6) are connected by bearing (25) seats. One end of the screw (6) is connected to a motor (17) fixed on the machine base (1) and rotates under the drive of the motor (17). A moving block (16) is set on the screw (6), and the moving block (16) is threadedly connected to the screw (6). The moving block (16) is hinged with a swing arm, and the upper end of the swing arm is hinged to the bottom of the drying cylinder (2). A guide rod (5) is also set at the bottom of the drying cylinder (2). The guide rod (5) is inserted into the machine base (1) and slidably connected to the machine base (1).

7. A dryer with waste heat utilization function according to claim 6, characterized in that: A fixing rod (13) is provided on the drying cylinder (2), and a fixing block (12) is sleeved on the fixing rod (13). The fixing block (12) is connected to a receiving plate (4). The upper end of the receiving plate (4) is connected to a tilting mechanism. The tilting mechanism includes a pull rope (14) connected to the receiving plate (4). The pull rope (14) is connected to a steering wheel (15) and passes through the steering wheel (15) and is connected to a moving block (16). The receiving plate (4) is located below the discharge port (19) and is used to receive the dried material.

8. A dryer with waste heat utilization function according to claim 7, characterized in that: The drying cylinder (2) is provided with cylinder cover (24) at both ends, and the connecting pipe (11) passes through the cylinder cover (24) and is connected to the bearing (25). The base (1) is fixedly connected to the support frame (7), and the platform (8) is set on the support frame (7).

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