Boiler waste heat recovery device

Abstract

The application discloses a boiler waste heat recycling device, which comprises a treatment tank, two symmetrical supporting seats are fixedly connected to the lower end of the treatment tank, a second collecting pipe is arranged through the treatment tank, a recovery tank is arranged in the treatment tank, the recovery tank is rotationally connected with the treatment tank, an air inlet pipe is rotationally connected to the recovery tank, one end of the air inlet pipe penetrates through the side wall of the treatment tank and extends to the outside of the treatment tank, and a heat conduction assembly is arranged in the recovery tank. In the application, the staff can start the motor through the controller, when the motor works, the recovery tank can be further rotated, the heat plate is also rotated, the impurities and dust on the heat plate can be cleaned by the cleaning plate because the heat plate is in contact with the cleaning plate and the cleaning plate is fixed, the heat conduction efficiency of the device is improved, the dust adhered to the heat plate is further avoided, and the waste heat recycling efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery and utilization technology, and more specifically, to a boiler waste heat recovery and utilization device. Background Technology

[0002] Boiler waste heat recovery can recover heat from flue gas. The recovered heat can be used to heat water for boiler feedwater and domestic water, or to heat air for boiler combustion or material drying, saving fuel costs, reducing production costs, and reducing exhaust emissions. It is energy-saving and environmentally friendly, achieving two goals at once. Among them, the gas-to-gas heat pipe boiler waste heat recovery method is a particularly important part. The waste heat recovery device is a special equipment for oil, coal, and gas boilers. It is installed in the boiler flue or flue. After recovering the waste heat from the flue gas, it heats the air. The hot air can be used for boiler combustion and material drying. During operation, the high-temperature flue gas flows upward from the left channel and washes the heat pipe. At this time, the heat pipe absorbs heat, the flue gas releases heat and the temperature drops. The heat pipe transfers the absorbed heat to the right end. The cold air flows downward from the right channel and washes the heat pipe in the opposite direction. At this time, the heat pipe releases heat and the air absorbs heat and the temperature rises.

[0003] In reality, as the flue gas from the boiler is continuously discharged into the waste heat recovery device, it comes into constant contact with the heat pipes. This causes impurities in the flue gas to adhere to the hot plate, further reducing the heat transfer efficiency of the hot plate and consequently the heat recovery efficiency of the waste heat recovery device. This reduces the device's service life and requires frequent cleaning by staff, increasing their workload and indirectly reducing their work efficiency.

[0004] Therefore, we propose a boiler waste heat recovery and utilization device to solve the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a boiler waste heat recovery and utilization device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a boiler waste heat recovery and utilization device, comprising a treatment tank, wherein two symmetrical support seats are fixedly connected to the lower end of the treatment tank, and a second collection pipe is provided through the treatment tank;

[0007] The processing tank is equipped with a recovery tank, which is rotatably connected to the processing tank. An air inlet pipe is rotatably connected to the recovery tank, and one end of the air inlet pipe passes through the side wall of the processing tank and extends to its outside.

[0008] The heat-conducting component in the recovery tank, the output end of the recovery tank is connected to a transition pipe, one end of the transition pipe passes through the side wall of the processing tank and extends to the outside;

[0009] A cleaning component is installed through the transition pipe, and one end of the cleaning component extends to the side wall of the recycling tank and into the interior.

[0010] Two support columns are fixedly connected to the side wall of the treatment tank. One end of the two support columns is fixedly connected to the same filter. The output end of the filter is fixedly connected to an air outlet pipe.

[0011] The upper end of the filter is connected to a drive assembly, and the drive assembly is connected to a first transmission assembly, which is connected to the recycling tank in a driving connection.

[0012] The drive assembly is connected to a second transmission assembly, and the air outlet pipe is provided with an output assembly, which is connected to the second transmission assembly in a transmission connection.

[0013] In this device, the operator can start the motor through the controller. When the motor is working, the recovery tank will rotate accordingly, and the hot plate will also rotate. Since the hot plate is in contact with the cleaning plate, and the cleaning plate is fixed, the impurities and dust on the hot plate can be cleaned away by the cleaning plate, thereby improving the heat conduction efficiency of the device and further preventing dust from adhering to the hot plate, thus improving the efficiency of waste heat recovery and utilization.

[0014] In a preferred embodiment, the heat-conducting assembly includes multiple heat plates fixedly connected to the inner wall of the recycling tank, multiple conductive plates fixedly connected to the outer wall of the recycling tank, and the multiple conductive plates are respectively connected to the multiple heat plates. A first collection pipe is provided through the recycling tank.

[0015] In a preferred embodiment, the cleaning assembly includes a vertical rod extending through a transition tube, a fixing rod fixedly connected to the side wall of the vertical rod, one end of the fixing rod extending into a recovery tank, and multiple cleaning plates fixedly connected to the side wall of the fixing rod, the side walls of the multiple cleaning plates respectively contacting the side wall of the hot plate.

[0016] In a preferred embodiment, two rotating rings are fixedly connected to the inner wall of the processing tank. Multiple rotating blocks are rotatably connected to each of the two rotating rings. Each of the multiple rotating blocks is fixedly connected to a connecting column, and one end of each of the multiple connecting columns is connected to the recycling tank.

[0017] In a preferred embodiment, the drive assembly includes a vertical column fixedly connected to the upper end of the filter. A motor is fixedly connected to the upper end of the vertical column. A first rotating shaft is fixedly connected to both the first drive shaft and the second drive shaft of the motor. A first bearing is sleeved on the side wall of each of the two first rotating shafts. A bending rod is fixedly connected to each of the two first bearings. One end of each of the two bending rods is fixedly connected to the side wall of the vertical column.

[0018] In a preferred embodiment, the first transmission assembly includes a first pulley fixedly connected to the side wall of one of the first rotating shafts, and a second pulley coaxially fixedly connected to the side wall of the recycling tank. The first pulley is connected to the second pulley via a first belt.

[0019] In a preferred embodiment, the second transmission assembly includes a third pulley fixedly connected to the side wall of another first rotating shaft, and a fourth pulley is provided in the air outlet pipe. The third pulley is connected to the fourth pulley via a second belt.

[0020] In a preferred embodiment, the output component includes a rotating rod disposed in the air outlet pipe, one end of which is fixedly connected to the side wall of the fourth pulley. A second bearing is coaxially sleeved on the side wall of the rotating rod, and multiple limiting rods are fixedly connected to the side wall of the second bearing. One end of each of the multiple limiting rods is fixedly connected to the inner side wall of the air outlet pipe. Multiple second fan blades are fixedly connected to the side wall of the rotating rod.

[0021] In a preferred embodiment, a rotating rod is fixedly connected to the inner wall of the recovery tank, and one end of the rotating rod extends into the air inlet pipe. Multiple first fan blades are fixedly connected to the side wall of the rotating rod.

[0022] In a preferred embodiment, two first blocking blocks are fixedly connected to the inner wall of the first collecting tube, a first partition is provided inside the first collecting tube, the first partition is located between the two first blocking blocks, a first servo motor is fixedly connected to the inner wall of the first collecting tube, and the drive shaft of the first servo motor is connected to the first partition.

[0023] Two second blocking blocks are fixedly connected to the inner wall of the second collecting tube. A second partition is provided inside the second collecting tube, and the second partition is located between the two second blocking blocks. A second servo motor is fixedly connected to the inner wall of the second collecting tube, and the drive shaft of the second servo motor is connected to the second partition.

[0024] The technical effects and advantages of this invention are as follows:

[0025] 1. The operator can start the motor through the controller. When the motor is working, the recovery tank will rotate, and the hot plate will rotate as well. Since the hot plate is in contact with the cleaning plate and the cleaning plate is fixed, the impurities and dust on the hot plate can be cleaned away by the cleaning plate, thereby improving the heat conduction efficiency of the device and further preventing dust from adhering to the hot plate, thus improving the efficiency of waste heat recovery.

[0026] 2. The gas in the boiler can blow dust towards the filter, thus preventing dust from being discharged to the outside. At the same time, when the motor stops working, the dust will fall into the first collection pipe under the action of gravity. The operator can then start the first servo motor through the controller, which will cause the dust to fall into the second collection pipe. Then, the operator can start the second servo motor through the controller, which will discharge the dust to the outside. This makes it easier for the operator to clean the dust and impurities in the recycling tank, thereby facilitating the operator's work and indirectly improving the operator's work efficiency.

[0027] 3. When the motor is working, it will also cause the second drive shaft to rotate, which will cause the rotating rod to rotate, and further cause the second fan blade to rotate, thereby accelerating the discharge of gas from the recovery tank and ensuring the stability of gas transportation. At the same time, with the assistance of the rotating ring and connecting block, the stability of the recovery tank can be further stabilized, and the situation where the stability of the device is weakened due to the rotation of the recovery tank can be avoided. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a first-view structural diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the second perspective structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the third-view structure of the present invention;

[0032] Figure 5 This is a partial cross-sectional view of the connection structure in this invention;

[0033] Figure 6 for Figure 5 A partially enlarged schematic diagram of the connection structure at point A in the middle;

[0034] Figure 7 for Figure 5 A side view diagram of the connection structure;

[0035] Figure 8 This is a schematic diagram of a partial link structure of the present invention;

[0036] Figure 9 This is a side view of the connection structure of the first collecting tube in this invention;

[0037] Figure 10 This is a side view of the connection structure of the second collecting tube in this invention.

[0038] The attached figures are labeled as follows: 1. Processing tank; 2. Support base; 3. Recovery tank; 4. Inlet pipe; 5. Transition pipe; 6. Support column; 7. Filter; 8. Outlet pipe; 9. Hot plate; 10. Conducting plate; 11. First collection pipe; 1101. First blocking block; 1102. First partition; 1103. First servo motor; 12. Second collection pipe; 1201. Second blocking block; 1202. Second partition; 1203. Second servo motor; 13. Vertical rod; 14. Fixed rod; 15. Cleaning plate; 16. Rotating ring; 17. Rotating block; 18. Connecting column; 19. Vertical column; 20. Motor; 21. First rotating shaft; 22. First bearing; 23. Bending rod; 24. First pulley; 25. Second pulley; 26. First belt; 27. Third pulley; 28. Fourth pulley; 29. ​​Second belt; 30. Rotating rod; 31. Second bearing; 32. Limiting rod; 33. Rotating rod; 34. First fan blade; 35. Second fan blade. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Reference Figure 1-10 A boiler waste heat recovery and utilization device includes a treatment tank 1, wherein a support base 2 is fixedly connected to the lower end of the treatment tank 1, wherein the support base 2 can provide the treatment tank 1 with stronger stability, and an air inlet pipe 4 is fixedly connected to the input end of the treatment tank 1. It is particularly noteworthy that the air inlet pipe 4 is connected to the external boiler gas output end, thereby enabling the external boiler gas to be normally discharged into the recovery tank 3.

[0041] Two rotating rings 16 are fixedly connected to the inner wall of the processing tank 1, and multiple rotating blocks 17 are rotatably connected to the two rotating rings 16. One end of the multiple rotating blocks 17 is fixedly connected to the same recycling tank 3, which is located in the processing tank 1. It is particularly noteworthy that one end of the air inlet pipe 4 extends into the recycling tank 3, and a sealed bearing is provided at the connection between the air inlet pipe 4 and the recycling tank 3 to ensure the normal rotation of the recycling tank 3.

[0042] Meanwhile, multiple heating plates 9 are fixedly connected to the inner wall of the recovery tank 3, and multiple conductive plates 10 are fixedly connected to the outer wall of the recovery tank 3. The multiple conductive plates 10 are located between the recovery tank 3 and the processing tank 1. When the boiler gas is transferred to the heating plates 9 in the recovery tank 3, the heat of the gas can be gradually conducted to the conductive plates 10, so that the heat can be recovered and utilized. At the same time, two pipes are fixedly connected to the side wall of the processing tank 1, so that the external cold air source can enter the processing tank 1, thereby heating the gas source. It should be noted that the conductive plates 10 and the heating plates 9 are components of the preheating recovery and utilization device in the prior art. This is prior art and will not be described in detail here.

[0043] Meanwhile, the output end of the recycling tank 3 is rotatably connected to a transition pipe 5, and a bearing is provided at the connection between the transition pipe 5 and the recycling tank 3 to ensure the normal use of the recycling tank 3. A vertical rod 13 is passed through the transition pipe 5, and a fixing rod 14 is fixedly connected to the side wall of the vertical rod 13. One end of the fixing rod 14 extends into the interior of the recycling tank 3, and multiple cleaning plates 15 are fixedly connected to the inner side wall of the fixing rod 14. It is particularly noteworthy that cleaning brushes are fixedly connected to the inner side wall of the multiple cleaning plates 15, and the cleaning brushes contact the multiple hot plates 9 respectively, so that the hot plates 9 can be cleaned.

[0044] Meanwhile, a first collection pipe 11 is provided through the side wall of the recycling tank 3. The upper and lower ends of the first collection pipe 11 are open. Multiple first blocking blocks 1101 are fixedly connected to the inner side wall of the first collection pipe 11. A first partition 1102 is provided between the multiple first blocking blocks 1101. A first servo motor 1103 is fixedly connected to the side wall of the first collection pipe 11. The drive shaft of the first servo motor 1103 is connected to the first partition 1102. Therefore, when the first servo motor 1103 works, the first partition 1102 can be rotated accordingly, thereby allowing the dust accumulated in the first collection pipe 11 to be discharged to the outside.

[0045] Meanwhile, a second collection pipe 12 is provided through the side wall of the processing tank 1. The upper and lower ends of the second collection pipe 12 are open. The second collection pipe 12 is located below the first collection pipe 11. Multiple second blocking blocks 1201 are fixedly connected to the inner side wall of the second collection pipe 12, and a second partition 1202 is provided between the multiple second blocking blocks 1201. A second servo motor 1203 is fixedly connected to the side wall of the second collection pipe 12, and the drive shaft of the second servo motor 1203 is connected to the second partition 1202. Therefore, when the second servo motor 1203 works, the second partition 1202 can be rotated accordingly, so that the dust entering the second collection pipe 12 can be discharged to the outside. With the assistance of the first collection pipe 11 and the second collection pipe 12, it is convenient for the staff to clean the impurities in the recycling tank 3, further facilitating the cleaning work.

[0046] It is particularly noteworthy that multiple support columns 6 are fixedly connected to the side wall of the treatment tank 1, and one end of each support column 6 is fixedly connected to the same filter 7. The filter 7 contains filter screens and other components to filter the gas. A vertical column 19 is fixedly connected to the upper end of the filter 7, and a motor 20 is fixedly connected to the upper end of the vertical column 19. The motor 20 is a dual-shaft motor, and both the first and second drive shafts of the motor 20 are fixedly connected to first rotating shafts 21. First bearings 22 are fitted onto the side walls of both first rotating shafts 21, and bending rods 23 are fixedly connected to both first bearings 22. One end of each bending rod 23 is fixedly connected to the side wall of the vertical column 19. It is particularly noteworthy that, with the assistance of the bending rods 23 and the first bearings 22, the first and second drive shafts are made more stable, further increasing the stability of the device.

[0047] Meanwhile, a first pulley 24 is fixedly connected to the side wall of one of the first rotating shafts 21, and a second pulley 25 is coaxially fixedly connected to the side wall of the recycling tank 3. The first pulley 24 is connected to the second pulley 25 through a first belt 26. When the motor 20 works, the first pulley 24 can rotate accordingly. With the assistance of the first belt 26, the second pulley 25 can rotate accordingly, which in turn can make the recycling tank 3 rotate, thus cleaning the hot plate 9.

[0048] Meanwhile, a third pulley 27 is fixedly connected to the side wall of another first rotating shaft 21, and a fourth pulley 28 is provided in the air outlet pipe 8. The third pulley 27 is connected to the fourth pulley 28 through the second belt 29. When the motor 20 is working, the third pulley 27 can rotate accordingly. With the assistance of the second belt 29, the fourth pulley 28 can rotate accordingly, so that the rotating rod 30 can rotate accordingly.

[0049] The exhaust pipe 8 is equipped with a rotating rod 30, and one end of the rotating rod 8 is fixedly connected to the side wall of the fourth pulley 28. A second bearing 31 is coaxially sleeved on the side wall of the rotating rod 30. Multiple limiting rods 32 are fixedly connected to the side wall of the second bearing 31. One end of each limiting rod 32 is fixedly connected to the inner side wall of the exhaust pipe 8. Multiple second fan blades 35 are fixedly connected to the side wall of the rotating rod 30. When the rotating rod 30 rotates, with the assistance of the second bearing 31 and the limiting rods 32, the rotating rod 30 can rotate normally, and the second fan blades 35 rotate accordingly, so that the gas in the recovery tank 3 can be discharged more smoothly.

[0050] Meanwhile, a rotating rod 33 is fixedly connected to the inner wall of the recovery tank 3, and one end of the rotating rod 33 extends into the air inlet pipe 4. Multiple first fan blades 34 are fixedly connected to the side wall of the rotating rod 33. Therefore, when the recovery tank 3 rotates, the rotating rod 33 can rotate accordingly, and the first fan blades 34 can rotate accordingly, so that the boiler gas entering the recovery tank 3 can be normally transported into the recovery tank 3.

[0051] In this invention, when the operator needs to use this device, the operator first starts the motor 20 through the controller. When the motor 20 is working, the first drive shaft rotates, which in turn rotates the first pulley 24. With the assistance of the first belt 26, the second pulley 25 rotates, which in turn rotates the recycling tank 3. At the same time, the hot plate 9 rotates. Since the hot plate 9 is in contact with the cleaning plate 15, and the cleaning plate 15 is fixed, the impurities and dust on the hot plate 9 can be cleaned by the cleaning plate 15. At the same time, the gas in the boiler can blow the dust towards the filter 7, thus preventing the dust from being discharged to the outside. When the motor 20 stops working, the dust will fall into the first collection pipe 11 under the action of gravity. The operator then starts the first servo motor 1103 through the controller, which rotates the first partition 1102, causing the dust to fall into the second collection pipe 12. Then, the operator starts the second servo motor 1203 through the controller, which rotates the second partition 1202, thus allowing the dust to be discharged to the outside.

[0052] Simultaneously, when the motor 20 is working, it will also cause the second drive shaft to rotate, which will cause the third pulley 27 to rotate accordingly. With the assistance of the second belt 29, the fourth pulley 28 will rotate accordingly, which will cause the rotating rod 30 to rotate accordingly, and further cause the second fan blade 35 to rotate accordingly, thereby accelerating the discharge of gas from the recovery tank 3. When the recovery tank 3 rotates, the rotating ring 16 will not rotate. With the assistance of the connecting column 18 and the rotating block 17, the recovery tank 3 can be made more stable, and the overall device can be made more stable.

[0053] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0054] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0055] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A boiler waste heat recovery and utilization device, characterized in that; It includes a processing tank (1), the lower end of which is fixedly connected to two symmetrical support seats (2), and a second collection pipe (12) is provided through the processing tank (1). The processing tank (1) is provided with a recycling tank (3), which is rotatably connected to the processing tank (1). An air inlet pipe (4) is rotatably connected to the recycling tank (3), and one end of the air inlet pipe (4) passes through the side wall of the processing tank (1) and extends to its outside. The heat-conducting component in the recovery tank (3) is connected to the output end of the recovery tank (3) via a transition pipe (5), one end of which passes through the side wall of the processing tank (1) and extends to the outside. A cleaning component is provided through the transition pipe (5), and one end of the cleaning component extends to the side wall of the recycling tank (3) and into the interior; Two support columns (6) are fixedly connected to the side wall of the treatment tank (1). One end of the two support columns (6) is fixedly connected to the same filter (7). The output end of the filter (7) is fixedly connected to an air outlet pipe (8). The upper end of the filter (7) is connected to a drive assembly, and the drive assembly is connected to a first transmission assembly, which is connected to the recycling tank (3) in a transmission connection. The drive assembly is connected to a second transmission assembly, and the air outlet pipe (8) is provided with an output assembly, which is connected to the second transmission assembly in a transmission connection. The heat-conducting component includes multiple heat plates (9) fixedly connected to the inner wall of the recycling tank (3), multiple conductive plates (10) fixedly connected to the outer wall of the recycling tank (3), and multiple conductive plates (10) respectively connected to multiple heat plates (9). A first collection pipe (11) is provided through the recycling tank (3). The cleaning assembly includes a vertical rod (13) that runs through the transition tube (5), a fixing rod (14) that is fixedly connected to the side wall of the vertical rod (13), one end of the fixing rod (14) extending into the recovery tank (3), and multiple cleaning plates (15) that are fixedly connected to the side wall of the fixing rod (14), with the side walls of the multiple cleaning plates (15) respectively contacting the side wall of the hot plate (9); The drive assembly includes a vertical column (19) fixedly connected to the upper end of the filter (7). A motor (20) is fixedly connected to the upper end of the vertical column (19). A first rotating shaft (21) is fixedly connected to the first drive shaft and the second drive shaft of the motor (20). A first bearing (22) is sleeved on the side wall of each of the two first rotating shafts (21). A bending rod (23) is fixedly connected to each of the two first bearings (22). One end of each of the two bending rods (23) is fixedly connected to the side wall of the vertical column (19).

2. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: Two rotating rings (16) are fixedly connected to the inner wall of the processing tank (1). Multiple rotating blocks (17) are rotatably connected inside each of the two rotating rings (16). Each of the multiple rotating blocks (17) is fixedly connected to a connecting column (18). One end of each of the multiple connecting columns (18) is connected to the recycling tank (3).

3. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: The first transmission assembly includes a first pulley (24) fixedly connected to the side wall of one of the first rotating shafts (21), and a second pulley (25) coaxially fixedly connected to the side wall of the recycling tank (3). The first pulley (24) is connected to the second pulley (25) through a first belt (26).

4. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: The second transmission assembly includes a third pulley (27) fixedly connected to the side wall of another first rotating shaft (21), and a fourth pulley (28) is provided in the air outlet pipe (8). The third pulley (27) is connected to the fourth pulley (28) through a second belt (29).

5. A boiler waste heat recovery and utilization device according to claim 4, characterized in that: The output component includes a rotating rod (30) disposed in the air outlet pipe (8), and one end of the rotating rod (30) is fixedly connected to the side wall of the fourth pulley (28). A second bearing (31) is coaxially sleeved on the side wall of the rotating rod (30). Multiple limiting rods (32) are fixedly connected to the side wall of the second bearing (31). One end of the multiple limiting rods (32) is fixedly connected to the inner side wall of the air outlet pipe (8). Multiple second fan blades (35) are fixedly connected to the side wall of the rotating rod (30).

6. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: A rotating rod (33) is fixedly connected to the inner wall of the recycling tank (3), and one end of the rotating rod (33) extends into the air inlet pipe (4). Multiple first fan blades (34) are fixedly connected to the side wall of the rotating rod (33).

7. A boiler waste heat recovery and utilization device according to claim 1, characterized in that: Two first blocking blocks (1101) are fixedly connected to the inner wall of the first collecting pipe (11). A first partition (1102) is provided inside the first collecting pipe (11). The first partition (1102) is located between the two first blocking blocks (1101). A first servo motor (1103) is fixedly connected to the inner wall of the first collecting pipe (11), and the drive shaft of the first servo motor (1103) is connected to the first partition (1102). Two second blocking blocks (1201) are fixedly connected to the inner wall of the second collecting pipe (12). A second partition (1202) is provided inside the second collecting pipe (12). The second partition (1202) is located between the two second blocking blocks (1201). A second servo motor (1203) is fixedly connected to the inner wall of the second collecting pipe (12), and the drive shaft of the second servo motor (1203) is connected to the second partition (1202).

Images