An environmentally friendly dust removal device for boiler tail gas

Abstract

The invention relates to the technical field of boiler tail gas treatment, and specifically to an environmentally friendly dust removal device for boiler tail gas, comprising a cylinder, wherein an adjustable filtering structure is arranged in the cylinder; tail gas generated during boiler combustion enters a first protective shell through a smoke inlet joint, and the lower end of a piston cylinder of a Stirling engine is heated by the heat generated by the tail gas; at the same time, a liquid inlet joint is connected to a water body, and the water body enters a second protective shell, and the upper end of the piston cylinder of the Stirling engine is cooled by the water body, thereby driving the Stirling engine; when the Stirling engine is working, a flywheel is driven to rotate, and when the flywheel rotates, dust in the tail gas is filtered by the adjustable filtering structure, and at the same time, a spraying structure is driven to spray water, and dust and other impurities in the tail gas are further reduced, thereby improving the dust removal and purification effect of the tail gas, and at the same time, it is convenient to utilize the heat of the tail gas and reduce resource waste.

Description

Technical Field

[0001] The invention relates to the technical field of boiler tail gas treatment, and in particular to an environmentally friendly dust removal device for boiler tail gas. Background Art

[0002] When the boiler is burning, a large amount of high-temperature flue gas is generated and discharged into the atmosphere. The discharge of high-temperature flue gas not only causes a large amount of heat energy waste, but also pollutes the environment. At present, when the exhaust gas generated by the combustion of the boiler is discharged, the dust in the exhaust gas needs to be filtered and purified first, but due to the high temperature of the boiler exhaust gas, it will affect the treatment effect of the exhaust gas. The treatment effect of the exhaust gas is general. Therefore, an environmentally friendly dust removal device for boiler exhaust gas is proposed to facilitate the utilization of the heat of the exhaust gas and improve the dust removal and purification effect of the exhaust gas. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides an environmentally friendly dust removal device for boiler tail gas, which is convenient for utilizing the heat of the tail gas and improves the dust removal and purification effect of the tail gas.

[0004] The technical solution adopted by the present invention to solve its technical problems is an environmentally friendly dust removal device for boiler exhaust gas, comprising a cylinder, an adjustable filtering structure is provided in the cylinder, a spray structure is provided above the adjustable filtering structure, a liquid inlet structure is provided on the outside of the cylinder, the liquid inlet structure is connected to the spray structure, a vertically arranged transmission structure is provided in the cylinder, the spray structure is fixedly connected to the transmission structure, the adjustable filtering structure is rotatably connected to the transmission structure, a cleaning structure is provided below the adjustable filtering structure, the cleaning structure is fixedly connected to the transmission structure, and a driving structure is provided on the outside of the cylinder, and the driving structure is used to drive the transmission structure.

[0005] By adopting the above technical solution, the tail gas generated during the combustion of the boiler enters the cylinder through the driving structure, and the heat generated by the tail gas is used to make the driving structure work, and the driving structure drives the transmission structure to work, and the transmission structure drives the liquid inlet structure, and the liquid inlet structure transports water to the spray structure. As the tail gas rises inside the cylinder, the dust in the tail gas is filtered by the adjustable filter structure. After the filtration, the tail gas continues to rise, and the spray structure is used to spray water at this time to further reduce the dust and other impurities in the tail gas, thereby improving the dust removal and purification effect of the tail gas, and at the same time, it is convenient to utilize the heat of the tail gas and reduce resource waste.

[0006] During the rising process of exhaust gas, the dust is filtered by the adjustable filtering structure, the cleaning structure is driven by the transmission structure, and the adjustable filtering structure is cleaned by the cleaning structure, so as to ensure the dust removal and filtering effect of the adjustable filtering structure on dust.

[0007] Specifically, the driving structure includes a Stirling engine installed on the outside of the cylinder, the Stirling engine includes a piston cylinder, a connecting rod, and a flywheel, a first protective shell is installed on the outside of the bottom of the piston cylinder, one side of the first protective shell is connected to a smoke inlet joint, and the side of the first protective shell away from the smoke inlet joint is connected to the bottom of the cylinder through a pipeline, a second protective shell is installed on the outside of the upper part of the piston cylinder, and one side of the second protective shell is connected to a liquid inlet joint;

[0008] The liquid inlet structure includes a water pump, and a side of the second protective shell away from the liquid inlet joint is connected to the water inlet of the water pump through a pipeline. A liquid outlet pipe is provided at the upper end of the water pump, and the liquid outlet pipe is connected to the spray structure through a pipeline. The flywheel is coaxially connected to a horizontally arranged output shaft, one end of the output shaft is rotatably connected to a vertically arranged support rod, and one end of the output shaft away from the support rod is fixedly connected to the pump shaft of the water pump, the water pump is driven by the output shaft, and the transmission structure is driven by the output shaft.

[0009] By adopting the above technical scheme, the exhaust gas generated during the combustion of the boiler enters the first protective shell through the smoke inlet joint, and the lower end of the piston cylinder of the Stirling engine is heated by the heat generated by the exhaust gas. At the same time, the liquid inlet joint is connected to the water body, and the water body enters the second protective shell, and the upper end of the piston cylinder of the Stirling engine is cooled by the water body, so as to drive the Stirling engine. When the Stirling engine is working, it drives the flywheel to rotate, and when the flywheel rotates, it drives the water pump to work by the output shaft. When the water pump is working, the water in the second protective shell is pumped into the water pump through the pipeline and discharged through the liquid outlet pipe, and the water is transported to the spray structure, and the exhaust gas is continuously transported to the first protective shell by relying on the smoke inlet joint, and the two ends of the piston cylinder of the Stirling engine are heated and cooled respectively by relying on the flow of the water body, so as to facilitate the continuous driving of the Stirling engine to work, so as to utilize the heat of the exhaust gas and reduce resource waste.

[0010] Specifically, the transmission structure includes a mounting plate horizontally connected to the bottom inner side of the cylinder, a vertically arranged driving shaft is rotatably connected to the mounting plate, one end of the driving shaft close to the mounting plate is fixedly connected to a gear, a horizontally arranged transmission rod is provided inside the cylinder, one end of the transmission rod is fixedly connected to a vortex, the vortex meshes with the gear for transmission, one end of the transmission rod away from the vortex passes through the cylinder and is rotatably connected to the cylinder, the other end of the transmission rod is fixedly connected to a first pulley, and one end of the output shaft close to the support rod is fixedly connected to a second pulley, and the first pulley and the second pulley are driven by a transmission belt.

[0011] By adopting the above technical scheme, when the flywheel rotates, it drives the output shaft to rotate, and the rotation of the output shaft drives the second pulley to rotate. When the second pulley rotates, it relies on the transmission belt to drive the first pulley to rotate. When the first pulley rotates, it drives the vortex to rotate. The drive shaft rotates by relying on the meshing transmission of the vortex and the gear. The rotation stability of the drive shaft can be improved by relying on the mounting plate. When the drive shaft rotates, it drives the spray structure and the cleaning structure, so as to facilitate the filtering and purification of the exhaust gas in the cylinder.

[0012] Specifically, the spray structure includes several groups of spray rings, adjacent spray rings are fixedly connected by connecting rods, one side of the spray ring is connected with a connecting joint, adjacent spray rings are connected by pipelines, the connecting joint is connected to the liquid outlet pipe through the pipeline, the upper end of the drive shaft passes through the spray ring and is fixedly connected to the spray ring, several groups of vertically arranged first stirring rods and second stirring rods are fixedly connected between adjacent spray rings, and the lower ends of the first stirring rod and the second stirring rod are both located in the adjustable filtering structure.

[0013] By adopting the above technical scheme, the water body is transported to the spray ring through the connecting joint by relying on the liquid outlet pipe, and the water body is sprayed out by relying on the spray ring to spray and reduce dust on the exhaust gas in the cylinder. At the same time, the spray ring is driven to rotate when the driving shaft rotates. When the spray ring rotates, it moves with the first stirring rod and the second stirring rod. The filter material in the adjustable filter structure is stirred and cleaned by relying on the first stirring rod and the second stirring rod, thereby improving the filtering effect of the adjustable filter structure on dust in the exhaust gas.

[0014] Specifically, the adjustable filtering structure includes an annular frame with an opening upward and an inner sleeve, the outer side of the annular frame is fixedly connected to the inner side of the cylinder, the inner sleeve is slidably connected to the annular frame, the bottom of the annular frame and the inner sleeve are both provided with a first filtering hole arranged through, the inner lower part of the annular frame is provided with a plurality of groups of second filtering holes arranged through, the second filtering holes correspond to the inner sleeve in the initial state, and filtering materials are placed in the inner sleeve and the annular frame;

[0015] The lower end of the first stirring rod is located in the annular frame, the lower end of the second stirring rod is located in the inner sleeve, and the second stirring rod is an elastic stirring rod;

[0016] A plurality of groups of sliders are fixedly connected to the outer side of the inner sleeve, a plurality of groups of vertically arranged sliding grooves corresponding to the sliders are provided on the inner side of the annular frame, the sliding groove is located above the second filter hole, a damping spring is fixedly connected in the sliding groove, the slider is slidably connected to the sliding groove, the lower surface of the slider is fixedly connected to the upper end of the damping spring, the lower surface of the inner sleeve is provided with an annular guide groove opening downward, the depth of the annular guide groove gradually becomes shallower from left to right, and the annular guide groove is slidably connected to the cleaning structure.

[0017] By adopting the above technical scheme, when the driving shaft rotates, the cleaning structure is driven to rotate synchronously. When the cleaning structure rotates, it relies on the annular guide groove to drive the inner sleeve to move up. After the inner sleeve moves up to a certain position, the inner sleeve no longer blocks the second filter hole. The exhaust gas enters the annular frame through the first filter hole and the second filter hole and enters the inner sleeve through the first filter hole, thereby improving the filtration speed of the exhaust gas by the adjustable filter structure. At the same time, the dust in the exhaust gas is filtered and purified by the filter material placed in the annular frame and the inner sleeve. At the same time, the spray ring sprays water, which can further facilitate the attachment of dust in the exhaust gas to the filter material. At the same time, the rotation of the spray ring and the first stirring rod and the second stirring rod are used to stir and rinse the filter material in the annular frame and the inner sleeve, thereby further ensuring the dust removal effect on the exhaust gas.

[0018] When the cleaning structure rotates, it relies on the annular guide groove to drive the inner sleeve to move upward. When the cleaning structure rotates to a certain position, the cleaning structure is separated from the annular guide groove, and the inner sleeve automatically falls down. At this time, relying on the action of the damping spring, the inner sleeve slowly returns to its original position and moves downward. When the inner sleeve moves downward to a certain position, the cleaning structure contacts the annular guide groove of the inner sleeve again and drives the inner sleeve to move upward again, thereby increasing the intake volume of the exhaust gas and facilitating the filtering of the exhaust gas.

[0019] When the exhaust gas filtering work is completed, the driving shaft no longer rotates, and the cleaning structure also stops rotating when the driving shaft no longer rotates. Relying on the reset effect of the damping spring, the slider slides in the slide groove, and when the slider moves downward, it drives the inner sleeve to move downward synchronously. Relying on the downward movement of the inner sleeve, the lower end edge of the inner sleeve is squeezed and contacted with the inner side of the annular frame, so that the outer side of the second filter hole is cleaned by the downward movement of the inner sleeve, which is convenient for filtering the exhaust gas when it is used again later, and the filtering effect of the second filter hole is guaranteed.

[0020] Specifically, the cleaning structure includes a cleaning plate horizontally installed below the annular frame, the driving shaft passes through the cleaning plate and is fixedly connected to the cleaning plate, the upper surface of the cleaning plate is provided with symmetrically arranged first cleaning brushes, the first cleaning brushes are corresponding to the annular frame and are in pressure contact with the lower surface of the annular frame, the upper surface of the cleaning plate is provided with symmetrically arranged second cleaning brushes, the second cleaning brushes are corresponding to the inner sleeve and are in pressure contact with the lower surface of the inner sleeve, and a plurality of groups of reset springs are fixedly connected between the second cleaning brush and the cleaning plate;

[0021] A vertically arranged guide block is fixedly connected to the cleaning plate, and the guide block is located in the annular guide groove and is slidably connected to the annular guide groove.

[0022] By adopting the above technical solution, when the driving shaft drives the cleaning plate to rotate, the guide block slides in the annular guide groove, pressing the inner sleeve to move upward. After the inner sleeve moves upward to a certain position, the second filter hole is opened, and the exhaust gas can enter the annular frame through the second filter hole, thereby increasing the intake volume of the exhaust gas.

[0023] When the inner sleeve moves upward, the return spring drives the second cleaning brush to move upward, and the second cleaning brush is pressed and contacted with the lower surface of the inner sleeve when moving upward. As the cleaning plate rotates, the first cleaning brush and the second cleaning brush are driven to rotate, and the first cleaning brush and the second cleaning brush are used to clean the first filter hole on the annular frame and the lower surface of the inner sleeve respectively, so as to prevent dust from clogging and reduce the air intake of the first filter hole.

[0024] At the same time, relying on the action of the return spring, the second cleaning brush can be adjusted as the inner sleeve moves up or down, so as to facilitate cleaning of the first filter hole of the inner sleeve;

[0025] It should be pointed out that when the guide block described in the present invention moves in the annular guide groove, it first drives the inner sleeve to move upward from deep to shallow. As the cleaning plate rotates, the guide block enters the deep position of the annular guide groove again, and relies on the damping spring to drive the inner sleeve to slowly return to its original position and move downward. When the guide block moves to a shallower position in the annular guide groove, it squeezes the inner sleeve upward again, thereby cyclically squeezing the inner sleeve upward to open the second filter hole to increase the intake volume of the exhaust gas. Moreover, as the rotation speed of the cleaning structure is faster, the second filter hole is opened for a longer time, thereby automatically adjusting the filtration speed of the exhaust gas by the adjustable filter structure according to the rotation speed of the cleaning structure to a certain extent.

[0026] Specifically, a smoke exhaust pipe is provided on the top of the cylinder, and the smoke exhaust pipe is communicated with the interior of the cylinder.

[0027] By adopting the above technical solution, the purified exhaust gas is discharged through the smoke exhaust pipe at the top of the cylinder.

[0028] Specifically, a sewage pipe is provided at the bottom of the cylinder, and the sewage pipe is communicated with the interior of the cylinder.

[0029] By adopting the above technical solution, the water sprayed by the spray ring falls on the inner bottom of the cylinder through the annular frame and the inner sleeve, and the sewage in the cylinder can be discharged through the sewage pipe.

[0030] Beneficial effects of the present invention:

[0031] The environmentally friendly dust removal device for boiler exhaust gas described in the present invention, the exhaust gas generated during the combustion of the boiler enters into the first protective shell through the smoke inlet joint, the lower end of the piston cylinder of the Stirling engine is heated by the heat generated by the exhaust gas, and the liquid inlet joint is connected to the water body, the water body enters into the second protective shell, and the upper end of the piston cylinder of the Stirling engine is cooled by the water body, thereby driving the Stirling engine. When the Stirling engine is working, it drives the flywheel to rotate, and when the flywheel rotates, the dust in the exhaust gas is filtered by the adjustable filtering structure, and the spray structure is driven to spray water, and the dust and other impurities in the exhaust gas are further reduced, thereby improving the dust removal and purification effect of the exhaust gas, and at the same time, it is convenient to utilize the heat of the exhaust gas and reduce resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1 is an axonometric view of the present invention;

[0034] Figure 2 It is a schematic diagram of the water pump structure of the present invention;

[0035] Figure 3 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure after the inner sleeve of the present invention moves upward;

[0037] Figure 5 for Figure 3 A schematic diagram of the enlarged structure of region A;

[0038] Figure 6 for Figure 3 Schematic diagram of the enlarged structure of region B;

[0039] Figure 7 for Figure 4 Schematic diagram of the enlarged structure of the C region;

[0040] Figure 8 It is a schematic diagram of the structure of the annular guide groove of the inner sleeve of the present invention;

[0041] Fig. 9 It is a schematic diagram of the spray ring structure of the present invention;

[0042] In the figure: 1, cylinder; 2, piston cylinder; 3, connecting rod; 4, flywheel; 5, first protective shell; 6, smoke inlet joint; 7, second protective shell; 8, liquid inlet joint; 9, water pump; 10, liquid outlet pipe; 11, output shaft; 12, support rod; 13, mounting plate; 14, drive shaft; 15, gear; 16, transmission rod; 17, volute; 18, first pulley; 19, second pulley; 20, transmission belt; 21, spray ring; 22 , connecting rod; 23, sewage pipe; 24, connecting joint; 25, first stirring rod; 26, second stirring rod; 27, annular frame; 28, inner sleeve; 29, first filter hole; 30, second filter hole; 31, slider; 32, slide groove; 33, damping spring; 34, annular guide groove; 35, cleaning plate; 36, first cleaning brush; 37, second cleaning brush; 38, reset spring; 39, guide block; 40, exhaust pipe. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0044] In order to utilize the heat of the exhaust gas and improve the dust removal and purification effect of the exhaust gas, as an embodiment of the present invention, Figure 1 , Figure 2 As shown, an environmentally friendly dust removal device for boiler exhaust gas described in the present invention includes a cylinder 1, an adjustable filtering structure is provided in the cylinder 1, a spray structure is provided above the adjustable filtering structure, a liquid inlet structure is provided on the outside of the cylinder 1, the liquid inlet structure is connected to the spray structure, a vertically arranged transmission structure is provided in the cylinder 1, the spray structure is fixedly connected to the transmission structure, the adjustable filtering structure is rotatably connected to the transmission structure, a cleaning structure is provided below the adjustable filtering structure, the cleaning structure is fixedly connected to the transmission structure, and a driving structure is provided on the outside of the cylinder 1, and the driving structure is used to drive the transmission structure.

[0045] When in use, the tail gas generated during the combustion of the boiler enters the cylinder 1 through the driving structure, and the heat generated by the tail gas is used to make the driving structure work, and the driving structure drives the transmission structure to work, and the transmission structure drives the liquid inlet structure, and the liquid inlet structure transports water to the spray structure. As the tail gas rises inside the cylinder 1, the dust in the tail gas is filtered by the adjustable filter structure. After the filtration, the tail gas continues to rise, and the spray structure is used to spray water at this time to further reduce the dust and other impurities in the tail gas, thereby improving the dust removal and purification effect of the tail gas, and at the same time, it is convenient to utilize the heat of the tail gas and reduce resource waste;

[0046] During the rising process of exhaust gas, the dust is filtered by the adjustable filtering structure, the cleaning structure is driven by the transmission structure, and the adjustable filtering structure is cleaned by the cleaning structure, so as to ensure the dust removal and filtering effect of the adjustable filtering structure on dust.

[0047] In order to utilize the heat of the tail gas, for example, Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes that the driving structure includes a Stirling engine installed on the outside of the cylinder 1, and the Stirling engine includes a piston cylinder 2, a connecting rod 3, and a flywheel 4. A first protective shell 5 is installed on the outside of the bottom of the piston cylinder 2, and a smoke inlet connector 6 is connected to one side of the first protective shell 5. The side of the first protective shell 5 away from the smoke inlet connector 6 is connected to the bottom of the cylinder 1 through a pipeline. A second protective shell 7 is installed on the outside of the upper part of the piston cylinder 2, and a liquid inlet connector 8 is connected to one side of the second protective shell 7;

[0048] The liquid inlet structure includes a water pump 9. The side of the second protective shell 7 away from the liquid inlet joint 8 is connected to the water inlet of the water pump 9 through a pipeline. The upper end of the water pump 9 is provided with a liquid outlet pipe 10, and the liquid outlet pipe 10 is connected to the spray structure through a pipeline. The flywheel 4 is coaxially connected with a horizontally arranged output shaft 11, and one end of the output shaft 11 is rotatably connected to a vertically arranged support rod 12. The end of the output shaft 11 away from the support rod 12 is fixedly connected to the pump shaft of the water pump 9. The water pump 9 is driven by the output shaft 11, and the transmission structure is driven by the output shaft 11.

[0049] When in use, the exhaust gas generated during the combustion of the boiler enters the first protective shell 5 through the smoke inlet joint 6, and the lower end of the piston cylinder 2 of the Stirling engine is heated by the heat generated by the exhaust gas. At the same time, the liquid inlet joint 8 is connected to the water body, and the water body enters the second protective shell 7. The upper end of the piston cylinder 2 of the Stirling engine is cooled by the water body, thereby driving the Stirling engine. When the Stirling engine is working, it drives the flywheel 4 to rotate. When the flywheel 4 rotates, it drives the water pump 9 to work by the output shaft 11. When the water pump 9 is working, the water in the second protective shell 7 is pumped into the water pump 9 through the pipeline and discharged through the liquid outlet pipe 10, and the water is transported to the spray structure, and the exhaust gas is continuously transported to the first protective shell 5 by relying on the smoke inlet joint 6, and the two ends of the piston cylinder 2 of the Stirling engine are heated and cooled respectively by relying on the flow of the water body, so as to facilitate the continuous driving of the Stirling engine to work, thereby utilizing the heat of the exhaust gas and reducing resource waste.

[0050] In order to rotate the drive shaft 14, for example, Figure 3 , Figure 4As shown, the present invention also includes that the transmission structure includes a mounting plate 13 horizontally connected to the inner bottom of the cylinder 1, and a vertically arranged driving shaft 14 is rotatably connected to the mounting plate 13, and one end of the driving shaft 14 close to the mounting plate 13 is fixedly connected to a gear 15, and a horizontally arranged transmission rod 16 is provided inside the cylinder 1, and one end of the transmission rod 16 is fixedly connected to a vortex 17, and the vortex 17 is meshed with the gear 15 for transmission, and one end of the transmission rod 16 away from the vortex 17 passes through the cylinder 1 and is rotatably connected to the cylinder 1, and the other end of the transmission rod 16 is fixedly connected to a first pulley 18, and one end of the output shaft 11 close to the support rod 12 is fixedly connected to a second pulley 19, and the first pulley 18 and the second pulley 19 are transmitted through a transmission belt 20.

[0051] When in use, the flywheel 4 rotates to drive the output shaft 11 to rotate, and the output shaft 11 rotates to drive the second pulley 19 to rotate. When the second pulley 19 rotates, it relies on the transmission belt 20 to drive the first pulley 18 to rotate. When the first pulley 18 rotates, it drives the vortex 17 to rotate. The drive shaft 14 rotates by relying on the meshing transmission of the vortex 17 and the gear 15. The mounting plate 13 can improve the rotation stability of the drive shaft 14. When the drive shaft 14 rotates, it drives the spray structure and the cleaning structure, so as to facilitate the filtering and purification of the exhaust gas in the cylinder 1.

[0052] In order to filter the dust in the exhaust gas, for example, Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig. 9 As shown, the present invention also includes that the spray structure includes a plurality of groups of spray rings 21, and adjacent spray rings 21 are fixedly connected by connecting rods 22, and a connecting joint 24 is connected to one side of the spray ring 21, and adjacent spray rings 21 are connected by pipelines, and the connecting joint 24 is connected to the liquid outlet pipe 10 through the pipeline, and the upper end of the drive shaft 14 passes through the spray ring 21 and is fixedly connected to the spray ring 21, and a plurality of groups of vertically arranged first stirring rods 25 and second stirring rods 26 are fixedly connected between adjacent spray rings 21, and the lower ends of the first stirring rod 25 and the second stirring rod 26 are both located in the adjustable filtering structure.

[0053] When in use, the liquid outlet pipe 10 is used to transport water to the spray ring 21 through the connecting joint 24, and the spray ring 21 is used to spray the water to reduce dust on the exhaust gas in the cylinder 1. At the same time, the spray ring 21 is driven to rotate when the driving shaft 14 rotates. When the spray ring 21 rotates, it moves with the first stirring rod 25 and the second stirring rod 26. The first stirring rod 25 and the second stirring rod 26 are used to stir and clean the filter material in the adjustable filter structure, thereby improving the filtering effect of the adjustable filter structure on dust in the exhaust gas.

[0054] In order to filter and purify the dust in the exhaust gas, for example, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the present invention also includes that the adjustable filtering structure includes an annular frame 27 and an inner sleeve 28 with an opening upward, the outer side of the annular frame 27 is fixedly connected to the inner side of the cylinder 1, the inner sleeve 28 is slidably connected to the annular frame 27, the bottoms of the annular frame 27 and the inner sleeve 28 are both provided with a first filtering hole 29 that is penetrated, the inner lower part of the annular frame 27 is provided with a plurality of groups of second filtering holes 30 that are penetrated, the second filtering holes 30 correspond to the inner sleeve 28 in the initial state, and filtering materials are placed in both the inner sleeve 28 and the annular frame 27;

[0055] The lower end of the first stirring rod 25 is located in the annular frame 27, and the lower end of the second stirring rod 26 is located in the inner sleeve 28. The second stirring rod 26 is an elastic stirring rod.

[0056] A plurality of groups of sliders 31 are fixedly connected to the outer side of the inner sleeve 28, and a plurality of groups of vertically arranged slide grooves 32 corresponding to the sliders 31 are provided on the inner side of the annular frame 27. The slide groove 32 is located above the second filter hole 30, and a damping spring 33 is fixedly connected in the slide groove 32. The slider 31 is slidably connected to the slide groove 32, and the lower surface of the slider 31 is fixedly connected to the upper end of the damping spring 33. The lower surface of the inner sleeve 28 is provided with an annular guide groove 34 opening downward, and the depth of the annular guide groove 34 gradually becomes shallower from left to right, and the annular guide groove 34 is slidably connected to the cleaning structure.

[0057] When in use, the driving shaft 14 rotates and drives the cleaning structure to rotate synchronously. When the cleaning structure rotates, it relies on the annular guide groove 34 to drive the inner sleeve 28 to move up. After the inner sleeve 28 moves up to a certain position, the inner sleeve 28 no longer blocks the second filter hole 30 from entering. The exhaust gas enters the annular frame 27 through the first filter hole 29 and the second filter hole 30, and enters the inner sleeve 28 through the first filter hole 29, so as to improve the filtration speed of the exhaust gas by the adjustable filter structure. At the same time, the dust in the exhaust gas is filtered and purified by the filter material placed in the annular frame 27 and the inner sleeve 28. At the same time, the spray ring 21 sprays water, which can further facilitate the attachment of dust in the exhaust gas to the filter material. At the same time, the rotation of the spray ring 21 and the first stirring rod 25 and the second stirring rod 26 stir and rinse the filter material in the annular frame 27 and the inner sleeve 28, so as to further ensure the dust removal effect of the exhaust gas.

[0058] When the cleaning structure rotates, it relies on the annular guide groove 34 to drive the inner sleeve 28 to move upward. When the cleaning structure rotates to a certain position, the cleaning structure is separated from the annular guide groove 34, and the inner sleeve 28 automatically falls. At this time, relying on the action of the damping spring 33, the inner sleeve 28 slowly returns to its original position and moves downward. When the inner sleeve 28 moves downward to a certain position, the cleaning structure contacts the annular guide groove 34 of the inner sleeve 28 again, and drives the inner sleeve 28 to move upward again, thereby increasing the intake volume of the exhaust gas and facilitating the filtering of the exhaust gas.

[0059] When the exhaust gas filtering work is completed, the drive shaft 14 no longer rotates, and when the drive shaft 14 no longer rotates, the cleaning structure also no longer rotates, and relying on the reset effect of the damping spring 33, the slider 31 slides in the slide groove 32, and when the slider 31 moves downward, it drives the inner sleeve 28 to move downward synchronously, and relying on the downward movement of the inner sleeve 28, the lower end edge of the inner sleeve 28 is squeezed and contacted with the inner side of the annular frame 27, so that the outer side of the second filter hole 30 is cleaned by the downward movement of the inner sleeve 28, so as to facilitate the filtering of the exhaust gas when it is used again later, and to ensure the filtering effect of the second filter hole 30.

[0060] In order to facilitate the cleaning of the annular frame 27 and the inner sleeve 28, for example, Figure 4 , Figure 7 As shown, the present invention also includes that the cleaning structure includes a cleaning plate 35 horizontally installed below the annular frame 27, the driving shaft 14 passes through the cleaning plate 35 and is fixedly connected to the cleaning plate 35, the upper surface of the cleaning plate 35 is provided with a symmetrically arranged first cleaning brush 36, the first cleaning brush 36 corresponds to the annular frame 27 and is pressed and contacted with the lower surface of the annular frame 27, the upper surface of the cleaning plate 35 is provided with a symmetrically arranged second cleaning brush 37, the second cleaning brush 37 corresponds to the inner sleeve 28 and is pressed and contacted with the lower surface of the inner sleeve 28, and a plurality of groups of reset springs 38 are fixedly connected between the second cleaning brush 37 and the cleaning plate 35;

[0061] A vertically arranged guide block 39 is fixedly connected to the cleaning plate 35 . The guide block 39 is located in the annular guide groove 34 and is slidably connected to the annular guide groove 34 .

[0062] When in use, the driving shaft 14 drives the cleaning plate 35 to rotate, and the guide block 39 slides in the annular guide groove 34, pressing the inner sleeve 28 to move upward. After the inner sleeve 28 moves upward to a certain position, the second filter hole 30 is opened, and the exhaust gas can enter the annular frame 27 through the second filter hole 30, thereby increasing the intake volume of the exhaust gas.

[0063] When the inner sleeve 28 moves upward, the return spring 38 drives the second cleaning brush 37 to move upward. When the second cleaning brush 37 moves upward, it is pressed and contacted with the lower surface of the inner sleeve 28. As the cleaning plate 35 rotates, the first cleaning brush 36 and the second cleaning brush 37 are driven to rotate. The first cleaning brush 36 and the second cleaning brush 37 are used to clean the annular frame 27 and the first filter hole 29 on the lower surface of the inner sleeve 28 respectively to prevent dust from clogging and reduce the air intake of the first filter hole 29.

[0064] At the same time, the second cleaning brush 37 can be adjusted as the inner sleeve 28 moves up or down by relying on the action of the return spring 38, so as to facilitate cleaning of the first filter hole 29 of the inner sleeve 28;

[0065] It should be pointed out that when the guide block 39 described in the present invention moves in the annular guide groove 34, it first drives the inner sleeve 28 to move upward from deep to shallow. As the cleaning plate 35 rotates, the guide block 39 enters the deep position of the annular guide groove 34 again, and relies on the damping spring 33 to drive the inner sleeve 28 to slowly return to its original position and move downward. When the guide block 39 moves to a shallower position in the annular guide groove 34, it squeezes the inner sleeve 28 upward again, thereby cyclically squeezing the inner sleeve 28 upward to open the second filter hole 30 to increase the intake volume of the exhaust gas; and, as the rotation speed of the cleaning structure is faster, the second filter hole 30 is opened for a longer time, thereby automatically adjusting the filtration speed of the exhaust gas by the adjustable filter structure according to the rotation speed of the cleaning structure to a certain extent.

[0066] For example, Figure 1 As shown, the present invention also includes that a smoke exhaust pipe 40 is provided on the top of the cylinder 1 , and the smoke exhaust pipe 40 is connected to the interior of the cylinder 1 .

[0067] When in use, the purified exhaust gas is discharged through the smoke exhaust pipe 40 at the top of the cylinder 1.

[0068] For example, Figure 4 As shown, the present invention also includes that a sewage pipe 23 is provided at the bottom of the cylinder 1, and the sewage pipe 23 is connected to the inside of the cylinder 1.

[0069] When in use, the water sprayed by the spray ring 21 falls on the inner bottom of the cylinder 1 through the annular frame 27 and the inner sleeve 28, and the sewage in the cylinder 1 can be discharged through the sewage pipe 23.

[0070] When the present invention is in use, the tail gas generated during the combustion of the boiler enters the first protective shell 5 through the smoke inlet joint 6, and the heat generated by the tail gas is used to heat the lower end of the piston cylinder 2 of the Stirling engine. At the same time, the liquid inlet joint 8 is connected to the water body, and the water body enters the second protective shell 7. The water body is used to cool the upper end of the piston cylinder 2 of the Stirling engine, thereby driving the Stirling engine. When the Stirling engine is working, it drives the flywheel 4 to rotate. When the flywheel 4 rotates, it drives the water pump 9 to work by the output shaft 11. When the water pump 9 is working, the water in the second protective shell 7 is pumped into the water pump 9 through the pipeline and discharged through the liquid outlet pipe 10;

[0071] When the flywheel 4 rotates, the output shaft 11 is driven to rotate, and the output shaft 11 is driven to rotate the second pulley 19. When the second pulley 19 rotates, the first pulley 18 is driven to rotate by the transmission belt 20. When the first pulley 18 rotates, the volute 17 is driven to rotate, and the drive shaft 14 is rotated by the meshing transmission between the volute 17 and the gear 15;

[0072] When the driving shaft 14 drives the cleaning plate 35 to rotate, the guide block 39 slides in the annular guide groove 34, pressing the inner sleeve 28 to move upward. When the inner sleeve 28 moves upward to a certain position, the second filter hole 30 is opened, and the exhaust gas can enter the annular frame 27 through the second filter hole 30, thereby increasing the intake volume of the exhaust gas.

[0073] The tail gas enters the annular frame 27 through the first filter hole 29 and the second filter hole 30, and enters the inner sleeve 28 through the first filter hole 29, so as to improve the filtering speed of the adjustable filtering structure for the tail gas. At the same time, the dust in the tail gas is filtered and purified by the filter material placed in the annular frame 27 and the inner sleeve 28. At the same time, the water body is transported to the spray ring 21 through the connecting joint 24 by the liquid outlet pipe 10, and the water body is sprayed out by the spray ring 21, which can further facilitate the attachment of the dust in the tail gas to the filter material. At the same time, the filter material in the annular frame 27 and the inner sleeve 28 is stirred and washed by the rotation of the spray ring 21 and the first stirring rod 25 and the second stirring rod 26, so as to further ensure the dust removal effect of the tail gas;

[0074] When the inner sleeve 28 moves upward, the return spring 38 drives the second cleaning brush 37 to move upward. When the second cleaning brush 37 moves upward, it is pressed and contacted with the lower surface of the inner sleeve 28. As the cleaning plate 35 rotates, the first cleaning brush 36 and the second cleaning brush 37 are driven to rotate. The first cleaning brush 36 and the second cleaning brush 37 are used to clean the annular frame 27 and the first filter hole 29 on the lower surface of the inner sleeve 28 respectively to prevent dust from clogging and reduce the air intake of the first filter hole 29.

[0075] When the exhaust gas filtering work is completed, the drive shaft 14 no longer rotates, and when the drive shaft 14 no longer rotates, the cleaning structure also no longer rotates, and relying on the reset effect of the damping spring 33, the slider 31 slides in the slide groove 32, and when the slider 31 moves downward, it drives the inner sleeve 28 to move downward synchronously, and relying on the downward movement of the inner sleeve 28, the lower end edge of the inner sleeve 28 is squeezed and contacted with the inner side of the annular frame 27, so that the outer side of the second filter hole 30 is cleaned by the downward movement of the inner sleeve 28, so as to facilitate the filtering of the exhaust gas when it is used again later, and to ensure the filtering effect of the second filter hole 30.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An environmental dust removal device for boiler tail gas, characterized in that: The invention comprises a cylinder (1), wherein an adjustable filtering structure is arranged inside the cylinder (1), a spray structure is arranged above the adjustable filtering structure, a liquid inlet structure is arranged outside the cylinder (1), the liquid inlet structure is communicated with the spray structure, a vertically arranged transmission structure is arranged inside the cylinder (1), the spray structure is fixedly connected to the transmission structure, the adjustable filtering structure is rotatably connected to the transmission structure, a cleaning structure is arranged below the adjustable filtering structure, the cleaning structure is fixedly connected to the transmission structure, and a driving structure is arranged outside the cylinder (1), the driving structure is used to drive the transmission structure; The spray structure comprises a plurality of groups of spray rings (21), and a plurality of groups of vertically arranged first stirring rods (25) and second stirring rods (26) are fixedly connected between adjacent spray rings (21), and the lower ends of the first stirring rods (25) and the second stirring rods (26) are both located in the adjustable filtering structure; The adjustable filtering structure comprises an annular frame (27) with an opening facing upward and an inner sleeve (28); the outer side of the annular frame (27) is fixedly connected to the inner side of the cylinder (1); the inner sleeve (28) is slidably connected to the annular frame (27); the bottoms of the annular frame (27) and the inner sleeve (28) are both provided with first filtering holes (29) penetrating therethrough; the inner lower part of the annular frame (27) is provided with a plurality of groups of second filtering holes (30) penetrating therethrough; the second filtering holes (30) correspond to the inner sleeve (28) in an initial state; filtering materials are both placed in the inner sleeve (28) and the annular frame (27); The lower end of the first stirring rod (25) is located in the annular frame (27), the lower end of the second stirring rod (26) is located in the inner sleeve (28), and the second stirring rod (26) is an elastic stirring rod; The outer side of the inner sleeve (28) is fixedly connected with a plurality of groups of slide blocks (31); the inner side of the annular frame (27) is provided with a plurality of groups of vertically arranged slide grooves (32) corresponding to the slide blocks (31); the slide grooves (32) are located above the second filter holes (30); a damping spring (33) is fixedly connected inside the slide grooves (32); the slide blocks (31) are slidably connected to the slide grooves (32); the lower surface of the slide blocks (31) is fixedly connected to the upper end of the damping spring (33); the lower surface of the inner sleeve (28) is provided with an annular guide groove (34) opening downward; the depth of the annular guide groove (34) gradually becomes shallower from left to right; and the annular guide groove (34) is slidably connected to the cleaning structure; The cleaning structure comprises a cleaning plate (35) mounted horizontally below the annular frame (27), a vertically arranged guide block (39) being fixedly connected to the cleaning plate (35), the guide block (39) being located in the annular guide groove (34) and slidably connected to the annular guide groove (34).

2. The environmental dust removal device for boiler tail gas according to claim 1, characterized in that: The driving structure comprises a Stirling engine mounted on the outside of a cylinder (1), the Stirling engine comprising a piston cylinder (2), a connecting rod (3), and a flywheel (4); a first protective shell (5) is mounted on the outside of the bottom of the piston cylinder (2); one side of the first protective shell (5) is connected to a smoke inlet joint (6); a side of the first protective shell (5) away from the smoke inlet joint (6) is connected to the bottom of the cylinder (1) via a pipeline; a second protective shell (7) is mounted on the outside of the upper part of the piston cylinder (2); one side of the second protective shell (7) is connected to a liquid inlet joint (8); The liquid inlet structure comprises a water pump (9); a side of the second protective shell (7) away from the liquid inlet joint (8) is connected to a water inlet of the water pump (9) through a pipeline; a liquid outlet pipe (10) is provided at the upper end of the water pump (9); the liquid outlet pipe (10) is connected to the spray structure through a pipeline; the flywheel (4) is coaxially connected to a horizontally arranged output shaft (11); one end of the output shaft (11) is rotatably connected to a vertically arranged support rod (12); one end of the output shaft (11) away from the support rod (12) is fixedly connected to a pump shaft of the water pump (9); the water pump (9) is driven by the output shaft (11); and the transmission structure is driven by the output shaft (11).

3. The environmentally friendly dust removal device for boiler tail gas according to claim 2 is characterized in that: The transmission structure comprises a mounting plate (13) horizontally connected to the bottom of the inner side of the cylinder (1), a vertically arranged driving shaft (14) being rotatably connected to the mounting plate (13), an end of the driving shaft (14) close to the mounting plate (13) being fixedly connected to a gear (15), a horizontally arranged transmission rod (16) being provided inside the cylinder (1), one end of the transmission rod (16) being fixedly connected to a volute (17), the volute (17) being meshed with the gear (15) for transmission, an end of the transmission rod (16) away from the volute (17) passing through the cylinder (1) and being rotatably connected to the cylinder (1), the other end of the transmission rod (16) being fixedly connected to a first pulley (18), and an end of the output shaft (11) close to the support rod (12) being fixedly connected to a second pulley (19), and transmission is transmitted between the first pulley (18) and the second pulley (19) via a transmission belt (20).

4. The environmentally friendly dust removal device for boiler tail gas according to claim 3 is characterized in that: Adjacent spray rings (21) are fixedly connected via a connecting rod (22); one side of the spray ring (21) is connected with a connecting joint (24); adjacent spray rings (21) are connected via a pipeline; the connecting joint (24) is connected to a liquid outlet pipe (10) via a pipeline; and the upper end of the drive shaft (14) passes through the spray ring (21) and is fixedly connected to the spray ring (21).

5. The environmentally friendly dust removal device for boiler tail gas according to claim 4 is characterized in that: The drive shaft (14) passes through the cleaning plate (35) and is fixedly connected to the cleaning plate (35); the upper surface of the cleaning plate (35) is provided with symmetrically arranged first cleaning brushes (36); the first cleaning brushes (36) correspond to the annular frame (27) and are in pressure contact with the lower surface of the annular frame (27); the upper surface of the cleaning plate (35) is provided with symmetrically arranged second cleaning brushes (37); the second cleaning brushes (37) correspond to the inner sleeve (28) and are in pressure contact with the lower surface of the inner sleeve (28); and a plurality of groups of return springs (38) are fixedly connected between the second cleaning brush (37) and the cleaning plate (35).

6. The environmentally friendly dust removal device for boiler tail gas according to claim 5, characterized in that: A smoke exhaust pipe (40) is provided at the top of the cylinder (1), and the smoke exhaust pipe (40) is communicated with the interior of the cylinder (1).

7. The environmentally friendly dust removal device for boiler tail gas according to claim 1, characterized in that: A sewage discharge pipe (23) is provided at the bottom of the cylinder (1), and the sewage discharge pipe (23) is communicated with the interior of the cylinder (1).

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