Flue gas waste heat recovery device for heating furnace

Abstract

The invention relates to the technical field of drying equipment, in particular to a heating furnace flue gas waste heat recovery device which 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 device further comprises a flue gas inlet pipe, and the flue gas inlet pipe is connected with a flue gas pipeline of a heating furnace and used for collecting flue gas of the heating furnace; 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 cylinder and then is connected with a bearing, the bearing is connected with a main shaft, the main shaft is of a hollow structure and communicates with a stirring arm, and air outlet holes are formed in the stirring arm; the whole device has the advantages that on one hand, flue gas waste heat can be recycled, and the purpose of flue gas waste heat utilization is achieved; and on the other hand, consumption of external energy can be further saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, and particularly relates to a heating furnace flue gas waste heat recovery device. BACKGROUND

[0002] Flue gas waste heat utilization refers to a process of recycling unused flue gas waste heat in an energy utilization device. Flue gas waste heat utilization is an important way to improve economic efficiency and save fuel, and can significantly reduce energy consumption and environmental pollution. In the energy expenditure of various industrial furnaces, waste gas waste heat accounts for about 15% to 35%, and after purification treatment, these waste gases are a kind of high-quality energy which is convenient to transport and use, does not need to be discharged and dedusted after combustion, and is not easy to cause environmental pollution. There are also some devices about flue gas waste heat utilization in the prior art, but the structure is too complex and needs to be improved.

[0003] A patent with publication number CN119042968B and the title of a flue gas waste heat recovery device is retrieved. The specific disclosure of a flue gas waste heat recovery device is disclosed, which comprises a base, the upper end of the base is rotatably installed with a shell, the inside of the shell is coaxially rotatably installed with a turning drum, the outer surface of the turning drum is uniformly distributed and extended with a plurality of turning ears, the end of the turning ear is attached to the inner wall of the shell, the middle of one end of the turning drum is extended with a rotating shaft, the rotating shaft penetrates out from one end of the shell, the rotating shaft is rotatably connected with the shell, one end of the shell is connected with a connecting shaft, the connecting shaft is connected with the rotating shaft, one end of the connecting shaft is connected with an adjusting part, the end of the adjusting part is rotatably installed with a shell pushing frame, the outer side of the shell pushing frame is provided with a frame seat, the frame seat is connected with the base, and the shell pushing frame and the frame seat are provided with a locking part. Preferably, the other end of the shell is fixedly connected with an exhaust pipe in the middle, the upper end edge of the shell is fixedly connected with a feeding pipe, the inside of the shell is coaxially provided with a jet ring, the jet ring is located on the side of the turning drum, the upper end of the jet ring is symmetrically fixedly connected with two communication pipes, the communication pipes penetrate from the upper end of the shell, and the end of the communication pipe is fixedly connected with an air inlet pipe. Preferably, the upper end of the base is fixedly installed with a shell support on one side, the upper end of the shell support is embedded with a connecting seat, the end of the connecting seat is rotatably installed with a U-shaped frame, the end of the U-shaped frame is fixed with the other end of the shell, the lower end edge of the shell is provided with a discharge port, the lower side of the discharge port is provided with a guide hopper, the guide hopper is inclinedly arranged, and the lower end of the guide hopper is fixed with the upper end of the base on the other side. Preferably, one end of the shell is rotatably installed with a driving shaft, the driving shaft is located behind the rotating shaft, the driving shaft is connected with the rotating shaft, the outer surface of the connecting shaft is rotatably installed with a shaft frame, the end of the shaft frame is fixed with the shell, the upper end of the base is fixedly installed with a fixed seat on the front edge, the end of the fixed seat is embedded with a bearing ear, and the end of the frame seat is rotatably connected with the end of the bearing ear. Preferably, the outer surface of the rotating shaft and the outer surface of the driving shaft are coaxially embedded with connecting gears, the two connecting gears are meshed, the end of the rotating shaft and the other end of the connecting shaft are coaxially embedded with bevel gears, the two bevel gears are meshed, one side of the shell is fixedly installed with a motor frame, the motor frame is located above the driving shaft, the end of the motor frame is fixedly installed with a servo motor, and the output end of the servo motor is fixed with the driving shaft. Preferably, the adjusting part comprises a carrier frame fixedly installed on one end of the connecting shaft, a threaded rod is rotatably installed between the upper and lower end faces of the carrier frame, the threaded rod penetrates out from the lower end of the carrier frame, the outer surface of the threaded rod is screwed with an adjusting seat, the end of the adjusting seat is extended with an extension shaft, and the end of the extension shaft is rotatably connected with the upper end of the shell pushing frame.

[0004] Through the analysis of the above disclosed material, the recovery and utilization of flue gas waste heat can be realized, but the rotation of the driving shaft needs to be driven by an external motor in the drying process, and the external energy consumed in the process of flue gas waste heat recovery is relatively large, and the economy is poor. SUMMARY

[0005] Therefore, the application provides a heating furnace flue gas waste heat recovery device, which can not only realize the recovery and utilization of flue gas waste heat, but also has high working efficiency, simple structure and good economy.

[0006] In order to solve the above technical problems, the application provides a heating furnace flue gas waste heat recovery device, which comprises a base, a drying cylinder is arranged on the base, an inlet and an outlet are arranged on the drying cylinder, and further comprising,

[0007] A smoke inlet pipe is connected with a flue gas pipeline of the heating furnace and used for collecting flue gas of the heating furnace.

[0008] A power mechanism comprises a platform arranged on the base, and a power box is arranged on the platform.

[0009] A material turning mechanism comprises a stirring arm arranged in the drying cylinder.

[0010] A flue gas flow mechanism comprises a connecting pipe arranged on the power box, the connecting pipe is connected with a bearing after penetrating through the drying cylinder, the bearing is connected with a main shaft, the main shaft is a hollow structure and communicates with the stirring arm, and a gas outlet is arranged on the stirring arm.

[0011] Further, the power box is a hollow cylindrical structure, a rotating shaft coaxial with the main shaft is arranged in the power box, an inner ring is arranged on the rotating shaft, a blade is arranged on the outer side of the inner ring, an outer ring is connected to the outer end of the blade, and a flue for receiving flue gas input is further arranged on the power box.

[0012] Further, the flue and the connecting pipe are arranged on opposite ends of the power box, the power box is connected with the platform through the bearing and supported by a vertical rod.

[0013] Further, the number of blades is several, a group of blades is connected with the inner ring and the outer ring, and several layers are arranged along the rotating shaft and arranged in parallel with each other, and the blade and the inner ring drive the rotating shaft to rotate.

[0014] Further, the stirring arm is a pipeline structure, the stirring arm is fixedly connected with the main shaft, the main shaft is provided with a flue, the flue is a groove structure, the flue is provided with an air inlet hole, the flue is communicated with the internal passage of the main shaft and communicated to the stirring arm, the main shaft is provided with a rotary protrusion, the rotary protrusion is connected with 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 communicated with the flue, for conveying flue gas to the flue.

[0015] Further, the machine base is provided with a discharging mechanism, the discharging mechanism comprises a screw rod arranged on the machine base, the screw rod is horizontally arranged, both ends of the screw rod are connected through bearing seats, one end of the screw rod is connected with a motor fixed on the machine base and rotates under the driving of the motor, the screw rod is provided with a moving block, the moving block is threadedly connected with the screw rod, the moving block is hingedly connected with a swing arm, the upper end of the swing arm is hingedly connected to the bottom of the drying cylinder, the bottom of the drying cylinder is further provided with a guide rod, the guide rod is inserted into the machine base and slidably connected with the machine base.

[0016] Further, the drying cylinder is provided with a fixing rod, a fixing block is sleeved on the fixing rod, the fixing block is connected with a material receiving plate, the upper end of the material receiving plate is connected with a tilting mechanism, the tilting mechanism comprises a pull rope connected with the material receiving plate, the pull rope is connected with a deflection wheel and connected with the moving block after passing through the deflection wheel, the material receiving plate is arranged below the discharge port and used for receiving the dried materials.

[0017] Further, both ends of the drying cylinder are provided with cylinder covers, and the connecting pipe penetrates the cylinder cover and is connected with the bearing, the machine base is fixedly connected with a support frame, and the platform is arranged on the support frame.

[0018] The beneficial effects of the above technical scheme of the present application are as follows:

[0019] 1. The flue gas waste heat can be recycled, the flue gas pipe on the heating furnace is connected through the smoke inlet pipe, the flue gas passes through the drying cylinder to dry the materials, and the purpose of flue gas waste heat utilization is achieved.

[0020] 2. The working efficiency is high, the structure is simple, and the economy is good, the power box is arranged, and the power source in the power box is flue gas, so that the consumption of external energy can be further saved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the present application;

[0022] Figure 2 is Figure 1 is a structural schematic view of another angle;

[0023] Figure 3 isFigure 2 Enlarged view of middle A;

[0024] Figure 4 Schematic view of internal structure of drying cylinder and power box;

[0025] Figure 5 Schematic view of internal structure of drying cylinder and power box; Figure 4 Schematic view of internal structure of drying cylinder and power box;

[0026] Figure 6 Schematic view of internal structure of drying cylinder and power box;

[0027] Figure 7 Schematic view of internal structure of drying cylinder and power box;

[0028] In the figure: 1, base; 2, drying cylinder; 3, feeding port; 4, receiving plate; 5, guide rod; 6, screw rod; 7, support frame; 8, platform; 9, smoke inlet pipe; 10, power box; 11, connecting pipe; 12, fixed block; 13, fixed rod; 14, pull rope; 15, steering wheel; 16, moving block; 17, motor; 18, inner ring; 19, discharging port; 20, outer ring; 21, blade; 22, stirring arm; 23, air outlet hole; 24, cylinder cover; 25, bearing; 26, main shaft; 27, flue; 28, air inlet hole; 29, rotary protrusion. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0030] As Figures 1-7 shown:

[0031] Example 1

[0032] The application discloses a heating furnace flue gas waste heat recovery device, which comprises a base 1, a drying cylinder 2 arranged on the base 1, an inlet 3 and an outlet 19 arranged on the drying cylinder 2, a flue gas inlet pipe 9 connected with a flue gas pipe of a heating furnace and used for collecting flue gas of the heating furnace, a power mechanism comprising a platform 8 arranged on the base 1 and provided with a power box 10, a material stirring mechanism comprising a stirring arm 22 arranged in the drying cylinder 2, and a flue gas flow mechanism comprising a connecting pipe 11 arranged on the power box 10, wherein the connecting pipe 11 penetrates through the drying cylinder and is connected with a bearing 25, the bearing 25 is connected with a main shaft 26, the main shaft 26 is a hollow structure and communicates with the stirring arm 22, and the stirring arm 22 is provided with an air outlet 23.

[0033] In the embodiment, the drying cylinder 2 is used for drying materials by utilizing the waste heat of flue gas, the inlet 3 and the outlet 19 are arranged on the drying cylinder 2, the drying cylinder 2 needs to stir materials when drying materials, the stirring is realized by the power box 10, the power of the power box 10 is derived from the flue gas, the internal mechanism of the power box 10 is driven to rotate by the flue gas containing waste heat, and the internal mechanism of the power box 10 can drive the main shaft 26 in the drying cylinder 2 to rotate when rotating, so that the waste heat effect of the flue gas is fully utilized. The material stirring mechanism is arranged in the drying cylinder 2 and comprises the stirring arm 22, the air outlet 23 is arranged on the stirring arm 22, and the drying of the materials is realized by the temperature of the flue gas. In the whole process, the flue gas flow mechanism needs to be arranged, the flue gas flow mechanism comprises the connecting pipe 11 connected with the power box 10, the other end of the connecting pipe 11 is connected with the bearing 25, and the channel is arranged between the bearing 25 and the main shaft 26.

[0034] Embodiment 2

[0035] The power box 10 is a hollow cylindrical structure, a rotating shaft coaxial with the main shaft 26 is arranged in the power box 10, the inner ring 18 is arranged on the rotating shaft, the blades 21 are arranged on the outer side of the inner ring 18, the outer ends of the blades 21 are connected with the outer ring 20, and the flue 27 for receiving flue gas input is further arranged on the power box 10; the flue gas enters the power box 10 and drives the blades 21 to rotate.

[0036] Different from the above embodiment, in the embodiment, the power box 10 is a hollow structure and is in a cylindrical shape, a rotating shaft coaxial with the main shaft 26 is arranged in the power box 10, the inner ring 18 is fixed on the rotating shaft, the blades 21 are arranged on the inner ring 18, and the blades 21 are arranged in an inclined mode; the entering of the flue gas can drive the blades 21 to rotate.

[0037] Embodiment 3

[0038] The flue 27 and the connecting pipe 11 are arranged at opposite ends of the power box 10, the power box 10 is connected to the platform 8 through the bearing 25, and the power box 10 is supported by the vertical rod.

[0039] Different from the above embodiment, in the present embodiment, the flue 27 and the connecting pipe 11 need to be arranged at both ends, the flue 27 is used for smoke gas to enter, after the smoke gas passes through the power box 10, the main shaft 26 is driven to rotate, and the smoke gas passing through the power box 10 enters the main shaft 26.

[0040] Embodiment 4

[0041] The number of the blades 21 is several, a group of blades 21 is connected to the inner ring 18 and the outer ring 20, and is arranged in several layers along the rotating shaft and is arranged in parallel with each other, the blades 21 and the inner ring 18 drive the rotating shaft to rotate.

[0042] Different from the above embodiment, in the present embodiment, the inner ring 18, the blades 21 and the outer ring 20 are fixedly arranged to form an integral whole, the integral whole is arranged in parallel with each other, and can achieve strong driving capacity to drive the main shaft 26 to rotate.

[0043] Embodiment 5

[0044] The stirring arm 22 is in a pipeline structure, the stirring arm 22 is fixedly connected to the main shaft 26, the main shaft 26 is provided with the flue 27, the flue 27 is in a groove structure, the flue 27 is provided with the air inlet hole 28, the flue 27 is communicated with the internal passage of the main shaft 26 and is communicated to the stirring arm 22, the main shaft 26 is provided with the rotary protrusion 29, the rotary protrusion 29 is connected to the bearing 25, the bearing 25 is fixed to the drying cylinder 2, the other end of the connecting pipe 11 is connected to the bearing 25 at a position corresponding to the flue 27 and is communicated with the flue 27, and is used for conveying smoke gas to the flue 27.

[0045] Different from the above embodiment, in the present embodiment, the stirring arm 22 is in a pipeline structure, the stirring arm 22 is communicated with the main shaft 26, one end of the main shaft 26 is connected to the bearing 25, the rotary protrusion 29 is arranged on the main shaft 26, the bearing 25 is connected through the rotary protrusion 29, and the flue 27 is arranged on the main shaft 26, the flue 27 is in an annular groove structure, the air inlet hole 28 is arranged in the flue 27, and the smoke gas enters through the air inlet hole 28 and is discharged from the stirring arm 22.

[0046] Embodiment 6

[0047] The machine base 1 is provided with a discharging mechanism, which comprises a screw rod 6 provided on the machine base 1, the screw rod 6 is horizontally arranged, the two ends of the screw rod 6 are connected through bearing seats, one end of the screw rod 6 is connected with a motor 17 fixed on the machine base 1 and rotates under the driving of the motor 17, a moving block 16 is arranged on the screw rod 6, the moving block 16 is threadedly connected with the screw rod 6, the moving block 16 is hingedly connected with a swing arm, the upper end of the swing arm is hingedly connected to the bottom of the drying cylinder 2, and the bottom of the drying cylinder 2 is further provided with a guide rod 5 which is inserted into the machine base 1 and is slidably connected with the machine base 1.

[0048] Different from the above embodiment, in the embodiment, the material is discharged quickly through the discharging mechanism after drying, specifically, a bearing seat is arranged on the machine base 1, the bearing seat is connected with a screw rod 6, and a moving block 16 is arranged on the screw rod 6 and is threadedly connected with the screw rod 6, the threads on the screw rod 6 are in opposite directions, the moving block 16 is two, and the moving mode of the moving block 16 is to move towards the middle or away from the two ends at the same time after the screw rod 6 rotates, the moving block 16 is hingedly connected to the bottom of the drying cylinder 2, and the position of one end of the drying cylinder 2 can be lowered during discharging, so that the discharging is facilitated.

[0049] Embodiment 7

[0050] The drying cylinder 2 is provided with a fixed rod 13, the fixed rod 13 is sleeved with a fixed block 12, the fixed block 12 is connected with a material receiving plate 4, the upper end of the material receiving plate 4 is connected with a tilting mechanism, the tilting mechanism comprises a pull rope 14 connected with the material receiving plate 4, the pull rope 14 is connected with a steering wheel 15 and is connected with the moving block 16 after passing through the steering wheel 15, and the material receiving plate 4 is arranged below a discharging port 19 and is used for receiving the dried material.

[0051] Different from the above embodiment, in the embodiment, the tilting mechanism adopts an automatic mode, when it is needed to tilt the material, the pull rope 14 is loosened in the moving process of the moving block 16, at this time, the inclination angle of the material receiving plate 4 is increased, so that the discharging is facilitated.

[0052] Embodiment 8

[0053] The two ends of the drying cylinder 2 are provided with cylinder covers 24, and the connecting pipe 11 penetrates through the cylinder covers 24 and is connected with bearings 25, the machine base 1 is fixedly connected with a support frame 7, and the platform 8 is arranged on the support frame 7.

[0054] Different from the above embodiment, in the embodiment, the cylinder cover 24 is fixedly connected with the drying cylinder 2 and plays a supporting and sealing role, in addition, after the flue gas passes through the drying cylinder 2, the residual heat can be basically used up, and then the water treatment purification can be performed.

[0055] The working method (or working principle) of the present application:

[0056] When the technology works, the smoke inlet pipe 9 is connected with the flue gas pipe of the heating furnace through a hose, and the high-temperature flue gas enters the power box 10 through the smoke inlet pipe 9. Since the vane 21 is arranged obliquely, the high-temperature flue gas drives the vane 21 to rotate. After the vane 21 rotates, the inner ring 18 and the rotating shaft are driven to rotate. The rotating shaft and the main shaft 26 are coaxially connected, so the main shaft 26 in the drying cylinder 2 also rotates together. The flue gas in 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 with the connecting pipe 11. The position of the hole corresponds to the flue 27, so the flue gas enters the inside of the main shaft 26 from the air inlet hole 28 after passing through the flue 27, and then comes out from the air outlet hole 23 on the stirring arm 22, so as to stir and dry the materials, and the mode can fully realize the contact between the flue gas waste heat and the materials.

[0057] In the present application, unless otherwise explicitly specified and limited, for example, it can be fixedly connected, or can be detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms can be understood according to the specific meaning in the present application by the ordinary skilled in the art.

[0058] The above is the preferred embodiment of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A waste heat recovery device for heating furnace flue gas, comprising a base (1), wherein a drying cylinder (2) is provided 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 cylinder 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. The waste heat recovery device for heating furnace flue gas 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. The waste heat recovery device for heating furnace flue gas 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. The waste heat recovery device for heating furnace flue gas 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. The waste heat recovery device for heating furnace flue gas 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. The waste heat recovery device for heating furnace flue gas 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 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. The waste heat recovery device for heating furnace flue gas 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. The waste heat recovery device for heating furnace flue gas 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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