Large environment-friendly calcining furnace

Abstract

The invention relates to the technical field of calcining furnaces, in particular to a large environment-friendly calcining furnace which comprises a support, a calcining furnace body is installed on the support, an exhaust pipe is installed on the calcining furnace body and exhausts waste gas generated by the calcining furnace body, clear water is contained in a heat exchange box, and a coiled pipe rotates to conduct heat exchange and heating on the clear water in the heat exchange box; a waste gas treatment box is mounted on the second mounting frame, a neutralizing solution is contained in the waste gas treatment box, waste gas subjected to heat exchange is conveyed into the neutralizing solution in the waste gas treatment box, an atomization mechanism is mounted in the waste gas treatment box, and the atomization mechanism can atomize and spray out the neutralizing solution to treat the waste gas. Tail gas heat is recovered through rotation of the coiled pipe, the treatment efficiency is improved, the occupied area is reduced through integrated design, blockage is avoided through a self-cleaning filter screen, the tail gas purification effect is improved through the atomization purification technology, and the multiple beneficial effects of heat recovery, efficient treatment, integration, self-cleaning and environmental protection are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of calcining furnaces, and in particular to a large-scale environmentally friendly calcining furnace. Background Art

[0002] WZK-F large environmentally friendly vacuum calcining furnace is skid-mounted and consists of a vacuum furnace chamber, a furnace cover translation mechanism, a furnace cover resetting (moving) device, a workpiece trolley, a trolley driving device, a furnace mouth sealing device, an electric heating system in the furnace, a waste collection device, an exhaust gas purification device, a high-temperature cleaning device inside the coil, an explosion-proof pressure relief device, a vacuum pipe water cooling device, an induced draft fan and a temperature control system.

[0003] The tail gas from the calcining furnace is an inevitable emission during the calcining process. The tail gas from the calcining furnace is usually at a high temperature and needs to be cooled first to prevent harmful substances from further reacting to produce more difficult-to-treat substances. The cooling treatment can be achieved through equipment such as a quenching tower. In this way, the heat carried by the tail gas is wasted and cannot be fully utilized. Dust removal and purification require the use of multiple spray towers, etc., which makes the dust removal and purification equipment relatively scattered and occupies a large space in an integrated manner. For this reason, the present application proposes a large-scale environmentally friendly calcining furnace. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems and to propose a large-scale environmentally friendly calcining furnace.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A large environmentally friendly calcining furnace comprises a bracket, on which a calcining furnace is mounted, on which an exhaust pipe is mounted, and the exhaust pipe discharges waste gas generated by the calcining furnace; a first mounting bracket, on which a heat exchange box is mounted, in which a rotatable serpentine pipe connected to the exhaust pipe is arranged, in which clean water is contained, and the rotation of the serpentine pipe can heat the clean water in the heat exchange box by heat exchange; and a second mounting bracket, on which a waste gas treatment box is mounted, in which a neutralizing liquid is present, and the waste gas after heat exchange is transported to the neutralizing liquid in the waste gas treatment box, and in which an atomizing mechanism is mounted, and the atomizing mechanism can spray the neutralizing liquid into atomized form to treat the waste gas.

[0006] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the upper end and the lower end of the serpentine tube are fixedly connected with a coaxially arranged first vertical pipe and a second vertical pipe, the first vertical pipe and the second vertical pipe pass through the heat exchange box and are rotatably connected thereto, a first rotary joint is installed on the first vertical pipe, the first rotary joint is connected to the exhaust pipe, a second rotary joint is installed at the bottom of the second vertical pipe, and a delivery pipe is installed at the bottom of the second rotary joint.

[0007] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: it also includes a driving mechanism for driving the first vertical pipe, the second vertical pipe and the serpentine pipe to rotate, the driving mechanism includes a motor installed on the heat exchange box, the output end of the motor is fixedly connected to a short shaft, a first gear is installed on the short shaft, a second gear is fixed on the first vertical pipe, and the first gear is meshed with the second gear.

[0008] In order to better achieve the above purpose, the present invention adopts a further technical solution: a water supply pipe is installed at the upper end of the heat exchange box, a drain pipe is installed at the lower end of the heat exchange box, and a first valve is installed on the drain pipe.

[0009] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: a rotating tube rotatably connected to the upper end of the exhaust gas treatment box is penetrated, a third rotating joint is installed on the rotating tube, the delivery pipe is connected to the third rotating joint, a horizontal tube is fixed to the bottom of the rotating tube, and a plurality of spray holes are installed at the bottom of the horizontal tube.

[0010] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: synchronous wheels are installed on the first vertical tube and the rotating tube, and the two synchronous wheels are connected by a synchronous belt.

[0011] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: two guide members are fixed to the inner wall of the exhaust gas treatment box, and the guide members include two support blocks fixed to the inner wall of the exhaust gas treatment box, and a guide rod is fixed between the two support blocks. A slip ring is slidably connected in the exhaust gas treatment box, and the guide rod passes through the slip ring and is slidably connected thereto. A spring is fixedly connected to the support block, and the other end of the spring is fixedly connected to the slip ring. The spring sleeve is arranged on the outside of the guide rod, and a support plate is fixedly connected in the slip ring, and a filter is fixed between the support plate and the slip ring. A groove body is penetrated in the middle of the support plate, and the rotating tube passes through the groove body and is movably connected thereto.

[0012] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the atomization mechanism includes a vertical rod rotatably installed on the upper end of the exhaust gas treatment box, a third gear is installed on the rotating tube, a fourth gear is fixed on the vertical rod, the third gear is meshed with the fourth gear, a circular plate is fixed on the upper end of the third gear, a connecting rod is eccentrically hingedly connected to the circular plate, a support is installed on the exhaust gas treatment box, a piston cylinder is installed on the support, a movable piston is slidably connected in the piston cylinder, the connecting rod is hingedly connected to the movable piston, a fixing ring is fixed on the inner top of the exhaust gas treatment box, the interior of the fixing ring is hollow, and a plurality of atomizing nozzles are installed at the bottom of the fixing ring, a first connecting pipe and a second connecting pipe are installed on the piston cylinder, the first connecting pipe is connected to the fixing ring, the second connecting pipe is connected to the exhaust gas treatment box, a first one-way valve is installed on the first connecting pipe, and a second one-way valve is installed on the second connecting pipe.

[0013] The beneficial effects of the present invention are: 1. Heat recovery: The rotation of the serpentine tube in the heat exchange box can transfer the heat in the tail gas of the calciner to the clean water in the heat exchange box, thus realizing the effective recovery of the tail gas heat. This design not only reduces the waste of heat, but also can apply the recovered heat to life or industrial production, thus reducing the consumption of other energy sources.

[0014] 2. Improve the exhaust gas treatment efficiency: The design of the serpentine tube allows the exhaust gas to change direction continuously during the flow process, thereby increasing the contact area and time between the exhaust gas and the inner wall of the serpentine tube, and improving the heat transfer efficiency. At the same time, this design also helps the harmful substances in the exhaust gas to be decomposed or transformed to a certain extent during the heat exchange process, thereby improving the efficiency of exhaust gas treatment.

[0015] 3. Integrated tail gas treatment equipment: This large environmentally friendly calcining furnace integrates the heat exchange box and the exhaust gas treatment box together, and realizes the continuous treatment of tail gas from heat exchange to purification through the transmission of synchronous wheels and synchronous belts. This design not only reduces the footprint of the equipment, but also improves the integration and automation of tail gas treatment.

[0016] 4. Self-cleaning filter design: The filter in the exhaust gas treatment box is self-cleaned through the impact force generated by the bursting of bubbles, avoiding the problem of filter blockage. This design not only extends the service life of the filter, but also ensures the continuity and stability of exhaust gas treatment.

[0017] 5. Atomization purification technology: The neutralization liquid is sprayed out through the atomization mechanism to further purify the exhaust gas. This technology not only improves the purification efficiency of the exhaust gas, but also can convert harmful substances in the exhaust gas into harmless substances, achieving better environmental protection effects. At the same time, the setting of the atomization nozzle also allows the neutralization liquid to be more evenly distributed in the exhaust gas treatment box, improving the purification effect.

[0018] In summary, the present invention recovers exhaust gas heat through the rotation of the serpentine tube to improve processing efficiency, the integrated design reduces floor space, the self-cleaning filter avoids clogging, and the atomization purification technology improves the exhaust gas purification effect, achieving multiple beneficial effects of heat recovery, efficient processing, integration, self-cleaning and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a large-scale environmentally friendly calcining furnace proposed by the present invention; Figure 2 This is a schematic diagram of the structure of the piston cylinder in a large-scale environmentally friendly calcining furnace proposed by the present invention; Figure 3 This is a schematic diagram of the structure of location A in a large-scale environmentally friendly calcining furnace proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a spring in a large-scale environmentally friendly calcining furnace proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a serpentine tube in a large-scale environmentally friendly calcining furnace proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a filter screen in a large-scale environmentally friendly calcining furnace proposed by the present invention; Figure 7 This is a schematic structural diagram of a fixed ring in a large-scale environmentally friendly calcining furnace proposed by the present invention.

[0020] In the figure: 1 bracket, 2 calcining furnace, 3 heat exchange box, 4 first mounting frame, 5 exhaust pipe, 6 first rotary joint, 7 serpentine pipe, 8 second vertical pipe, 9 second rotary joint, 10 delivery pipe, 11 first vertical pipe, 12 drainage pipe, 13 second mounting frame, 14 exhaust gas treatment box, 15 support plate, 16 water supply pipe, 17 synchronous belt, 18 third rotary joint, 19 rotating pipe, 20 cross pipe, 21 drainage pipe, 22 synchronous wheel, 23 motor, 24 short shaft, 25 first gear, 26 second gear, 27 piston cylinder, 28 outlet pipe, 29 fixed ring, 30 atomizing nozzle, 31 third gear, 32 fourth gear, 33 vertical rod, 34 round plate, 35 connecting rod, 36 movable piston, 37 first connecting pipe, 38 first one-way valve, 39 second connecting pipe, 40 second one-way valve, 41 spray hole, 42 support block, 43 slip ring, 44 spring, 45 filter screen, 46 guide rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] Reference Figure 1-Figure 7As shown, a large environmentally friendly calcining furnace comprises a bracket 1, on which a calcining furnace 2 is mounted, on which an exhaust pipe 5 is mounted, and the exhaust pipe 5 discharges the exhaust gas generated by the calcining furnace 2: a first mounting frame 4, on which a heat exchange box 3 is mounted, in which a serpentine pipe 7 connected to the exhaust pipe 5 and capable of rotating is arranged, the upper end and the lower end of the serpentine pipe 7 are fixedly connected with a coaxially arranged first vertical pipe 11 and a second vertical pipe 8, the first vertical pipe 11 and the second vertical pipe 8 pass through the heat exchange box 3 and are rotatably connected thereto, a first rotary joint 6 is mounted on the first vertical pipe 11, and the first rotary joint 6 is connected to the exhaust pipe 5, a second rotary joint 9 is mounted at the bottom of the second vertical pipe 8, a delivery pipe 10 is mounted at the bottom of the second rotary joint 9, the heat exchange box 3 is filled with clean water, and the rotation of the serpentine pipe 7 can heat the clean water in the heat exchange box 3 by heat exchange.

[0023] The rotatable serpentine tube 7 also includes a driving mechanism for driving the first vertical tube 11, the second vertical tube 8 and the serpentine tube 7 to rotate, the driving mechanism includes a motor 23 installed on the heat exchange box 3, the output end of the motor 23 is fixedly connected to a short shaft 24, a first gear 25 is installed on the short shaft 24, a second gear 26 is fixed on the first vertical tube 11, the first gear 25 is meshed with the second gear 26, wherein a water supply pipe 16 is installed at the upper end of the heat exchange box 3, a drain pipe 12 is installed at the lower end of the heat exchange box 3, and a first valve is installed on the drain pipe 12.

[0024] The second mounting frame 13, on which an exhaust gas treatment box 14 is mounted, a rotating tube 19 rotatably connected to the exhaust gas treatment box 14 is penetrated at the upper end, a third rotating joint 18 is mounted on the rotating tube 19, the delivery pipe 10 is connected to the third rotating joint 18, a horizontal tube 20 is fixed at the bottom of the rotating tube 19, and a plurality of spray holes 41 are mounted at the bottom of the horizontal tube 20; synchronous wheels 22 are mounted on the first vertical pipe 11 and the rotating tube 19, and the two synchronous wheels 22 are connected by a synchronous belt 17, an air outlet pipe 28 is mounted at the upper end of the exhaust gas treatment box 14, a drain pipe 21 is mounted at the bottom, a second valve is mounted on the drain pipe 21, and two guide members are fixed to the inner wall of the exhaust gas treatment box 14, and the guide member includes two support members fixed to the inner wall of the exhaust gas treatment box 14 Block 42, a guide rod 46 is fixed between the two support blocks 42, a slip ring 43 is slidably connected in the exhaust gas treatment box 14, the guide rod 46 penetrates the slip ring 43 and is slidably connected thereto, a spring 44 is fixedly connected to the support block 42, the other end of the spring 44 is fixedly connected to the slip ring 43, the spring 44 is sleeved on the outside of the guide rod 46, a support plate 15 is fixedly connected in the slip ring 43, a filter screen 45 is fixed between the support plate 15 and the slip ring 43, a groove body is penetrated in the middle of the support plate 15, a rotating tube 19 penetrates the groove body and is movably connected thereto, a neutralizing liquid is present in the exhaust gas treatment box 14, the exhaust gas after heat exchange is transported to the neutralizing liquid in the exhaust gas treatment box 14, an atomizing mechanism is installed in the exhaust gas treatment box 14, and the atomizing mechanism can atomize and spray the neutralizing liquid to treat the exhaust gas.

[0025] Further explanation of the atomization mechanism: the atomization mechanism includes a vertical rod 33 rotatably mounted on the upper end of the exhaust gas treatment box 14, a third gear 31 is mounted on the rotating tube 19, a fourth gear 32 is fixed on the vertical rod 33, the third gear 31 is meshed with the fourth gear 32, a circular plate 34 is fixed on the upper end of the third gear 31, a connecting rod 35 is eccentrically hingedly connected to the circular plate 34, a support is mounted on the exhaust gas treatment box 14, a piston cylinder 27 is mounted on the support, a mobile piston 36 is slidably connected in the piston cylinder 27, the connecting rod 35 is hingedly connected to the mobile piston 36, and a fixing ring is fixed on the inner top of the exhaust gas treatment box 14 29. The interior of the fixing ring 29 is hollow, and a plurality of atomizing nozzles 30 are installed at the bottom of the fixing ring 29. A first connecting pipe 37 and a second connecting pipe 39 are installed on the piston cylinder 27. The first connecting pipe 37 is connected to the fixing ring 29, and the second connecting pipe 39 is connected to the exhaust gas treatment box 14. A first one-way valve 38 is installed on the first connecting pipe 37, and the first one-way valve 38 allows the liquid in the piston cylinder 27 to enter the first connecting pipe 37. A second one-way valve 40 is installed on the second connecting pipe 39, and the second one-way valve 40 allows the liquid entering the second connecting pipe 39 to enter the piston cylinder 27.

[0026] When the present invention is used, the exhaust gas generated by the calcining furnace 2 is transported to the first vertical pipe 11 through the exhaust pipe 5 and the first rotary joint 6, and then transported to the serpentine pipe 7 through the first vertical pipe 11, and then discharged through the second vertical pipe 8 and the second rotary joint 9; the motor 23 is started, and the motor 23 drives the short shaft 24 to rotate, and the rotation of the short shaft 24 drives the first gear 25 to rotate, and the first gear 25 rotates and the second gear 26 rotates, thereby realizing the rotation of the first vertical pipe 11, and the rotation of the first vertical pipe 11 drives the serpentine pipe 7 and the second vertical pipe 8 to rotate. The rotation of the serpentine pipe 7 can stir the clean water in the heat exchange box 3, and the exhaust gas with heat can exchange heat with the clean water in the heat exchange box 3 when flowing through the serpentine pipe 7, thereby realizing the heating of the clean water. Due to the rotating setting of the serpentine pipe 7, the clean water can be evenly heated, and the temperature distribution of the clean water after being heated is uniformly coordinated with the flow of the stirred clean water.

[0027] Due to the arrangement of the serpentine pipe 7, when the exhaust gas turns and flows, the exhaust gas that abuts against the inner wall of the serpentine pipe 7 changes, so that the heat of the exhaust gas in the serpentine pipe 7 can be fully utilized, thereby realizing the recovery and utilization of the heat of the exhaust gas.

[0028] A thermometer can be installed on the heat exchange box 3. After heating to the required temperature, the staff can open the first valve to discharge the heated clean water through the drain pipe 12. The heated clean water can be used in life or industry, which can reduce the consumption of other energy sources. After the discharge is completed, new clean water is added to the heat exchange box 3 through the water adding pipe 16 for subsequent reheating. The exhaust gas after heat exchange is transported to the rotating tube 19 through the delivery pipe 10 and the third rotary joint 18. The rotation of the first vertical pipe 11 drives the synchronous wheel 22 to rotate. The rotating tube 19 rotates under the transmission of the synchronous belt 17. The rotation of the rotating tube 19 drives the horizontal tube 20 to rotate. The exhaust gas is transported to the horizontal tube 20 through the rotating tube 19, and finally sprayed into the neutralizing liquid through the spray hole 41. The neutralizing liquid can neutralize the acidic or alkaline gas in the exhaust gas to achieve the treatment of the exhaust gas and remove some dust.

[0029] The exhaust gas is ejected through the spray hole 41 in the form of bubbles and rolls upward. When the bubbles move upward and collide with the filter 45, the bubbles burst and the exhaust gas inside can be discharged. The dust in the exhaust gas can be filtered through the filter 45, thus achieving air purification.

[0030] The bursting of bubbles can cause the neutralizing liquid to surge and the filter 45 to shake, so that the dust filtered on the filter 45 can be shaken off, realizing self-cleaning of the filter 45, so that the filter 45 will not be blocked and can be used continuously for dust filtering; the exhaust gas passes through the filter 45 and then separates from the neutralizing liquid and flows upward, the rotating tube 19 rotates to drive the third gear 31 and the fourth gear 32 to rotate, thereby driving the vertical rod 33 to rotate, the vertical rod 33 rotates to drive the circular plate 34 to rotate, the circular plate 34 rotates to drive the connecting rod 35 to move, and the connecting rod 35 moves to drive the moving piston 36 to move back and forth. When the moving piston 36 moves close to the circular plate 34, the neutralizing liquid in the exhaust gas treatment box 14 can be sucked into the piston cylinder 27 through the second connecting pipe 39. When the moving piston 36 moves away from the circular plate 34, the neutralizing liquid in the piston cylinder 27 can be squeezed and transported to the fixing ring 29 through the first connecting pipe 37, and finally sprayed out through the atomizing nozzle 30. The sprayed atomized liquid can purify the exhaust gas again, and the purified exhaust gas is discharged through the exhaust pipe 28.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large environmentally friendly calcining furnace, comprising a support (1), a calcining furnace (2) being mounted on the support (1), an exhaust pipe (5) being mounted on the calcining furnace (2), the exhaust pipe (5) exhausting waste gas generated by the calcining furnace (2), characterized in that: A first mounting frame (4), a heat exchange box (3) being mounted on the first mounting frame (4), a rotatable serpentine tube (7) being connected to an exhaust pipe (5) being provided in the heat exchange box (3), clean water being contained in the heat exchange box (3), and the rotation of the serpentine tube (7) being able to heat the clean water in the heat exchange box (3); and a second mounting frame (13), an exhaust gas treatment box (14) being mounted on the second mounting frame (13), a neutralizing liquid being present in the exhaust gas treatment box (14), and exhaust gas after heat exchange is transported to the neutralizing liquid in the exhaust gas treatment box (14), and an atomizing mechanism being mounted in the exhaust gas treatment box (14), and the atomizing mechanism being able to atomize and spray the neutralizing liquid to treat the exhaust gas.

2. A large environmentally friendly calcining furnace according to claim 1, characterized in that: The upper end and the lower end of the serpentine tube (7) are fixedly connected to a first vertical tube (11) and a second vertical tube (8) which are coaxially arranged; the first vertical tube (11) and the second vertical tube (8) penetrate the heat exchange box (3) and are rotatably connected thereto; a first rotary joint (6) is installed on the first vertical tube (11); the first rotary joint (6) is connected to the exhaust pipe (5); a second rotary joint (9) is installed at the bottom of the second vertical tube (8); and a delivery pipe (10) is installed at the bottom of the second rotary joint (9).

3. A large environmentally friendly calcining furnace according to claim 2, characterized in that: The heat exchanger also comprises a driving mechanism for driving the first vertical pipe (11), the second vertical pipe (8) and the serpentine pipe (7) to rotate, the driving mechanism comprising a motor (23) mounted on the heat exchange box (3), the output end of the motor (23) being fixedly connected to a short shaft (24), the short shaft (24) being mounted with a first gear (25), the first vertical pipe (11) being fixed with a second gear (26), the first gear (25) being meshed with the second gear (26).

4. A large environmentally friendly calcining furnace according to claim 2, characterized in that: A water supply pipe (16) is installed at the upper end of the heat exchange box (3), a drainage pipe (12) is installed at the lower end of the heat exchange box (3), and a first valve is installed on the drainage pipe (12).

5. A large environmentally friendly calcining furnace according to claim 2, characterized in that: A rotating tube (19) rotatably connected to the exhaust gas treatment box (14) is provided through the upper end thereof, a third rotating joint (18) is installed on the rotating tube (19), the delivery pipe (10) is connected to the third rotating joint (18), a transverse tube (20) is fixed to the bottom of the rotating tube (19), and a plurality of spray holes (41) are installed on the bottom of the transverse tube (20).

6. A large environmentally friendly calcining furnace according to claim 5, characterized in that: The first vertical tube (11) and the rotating tube (19) are both mounted with synchronous wheels (22), and the two synchronous wheels (22) are connected via a synchronous belt (17).

7. A large environmentally friendly calcining furnace according to claim 5, characterized in that: Two guide members are fixed to the inner wall of the exhaust gas treatment box (14), and the guide members include two support blocks (42) fixed to the inner wall of the exhaust gas treatment box (14). A guide rod (46) is fixed between the two support blocks (42). A slip ring (43) is slidably connected inside the exhaust gas treatment box (14). The guide rod (46) passes through the slip ring (43) and is slidably connected thereto. A spring (44) is fixedly connected to the support block (42). The other end of the spring (44) is fixedly connected to the slip ring (43). The spring (44) is sleeved on the outside of the guide rod (46). A support plate (15) is fixedly connected inside the slip ring (43). A filter screen (45) is fixed between the support plate (15) and the slip ring (43). A slot body is passed through the middle of the support plate (15). The rotating tube (19) passes through the slot body and is movably connected thereto.

8. The large-scale environmentally friendly calcining furnace according to claim 1, characterized in that: The atomization mechanism comprises a vertical rod (33) rotatably mounted on the upper end of the exhaust gas treatment box (14); a third gear (31) is mounted on the rotating tube (19); a fourth gear (32) is fixed on the vertical rod (33); the third gear (31) meshes with the fourth gear (32); a circular plate (34) is fixed on the upper end of the third gear (31); a connecting rod (35) is eccentrically hingedly connected to the circular plate (34); a support is mounted on the exhaust gas treatment box (14); a piston cylinder (27) is mounted on the support; a movable piston (36) is slidably connected to the piston cylinder (27); the connecting rod (35) is rotatably connected to the movable piston (36 ... The movable piston (36) is hingedly connected, a fixing ring (29) is fixed to the inner top of the exhaust gas treatment box (14), the interior of the fixing ring (29) is hollow, and a plurality of atomizing nozzles (30) are installed at the bottom of the fixing ring (29), and a first connecting pipe (37) and a second connecting pipe (39) are installed on the piston cylinder (27), the first connecting pipe (37) is connected to the fixing ring (29), and the second connecting pipe (39) is connected to the exhaust gas treatment box (14), a first one-way valve (38) is installed on the first connecting pipe (37), and a second one-way valve (40) is installed on the second connecting pipe (39).

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