An industrial furnace exhaust gas filtering device

Abstract

The present invention discloses an exhaust gas filtering device for industrial furnaces, and relates to the technical field of industrial furnaces. The present invention comprises a spray box, a heat exchange tank and a purification box, the rear end of the spray box is penetrated and fixedly connected with an air inlet pipe, the middle end of the air inlet pipe is provided with an air pump, the side of the spray box is penetrated and fixedly connected with an air delivery pipe 1, the top and bottom of the heat exchange tank are respectively penetrated and fixedly connected with an inlet pipe and a drain pipe, and the present invention is provided with a spray dust removal mechanism, so that the motor is turned on to drive the stirring shaft to rotate, and the stirring shaft rotates to stir the heat exchange water in the heat exchange tank to accelerate the heat exchange, and the water suction pipe absorbs the spray water in the spray box through the cooperation of the bevel gear 1, the bevel gear 2, the rotating gear, the pressure chamber and other components, and discharges the spray water from the water outlet pipe to the spray pipe, and finally sprays it out from the spray pipe to remove dust and adsorb the exhaust gas, and the dust removal effect is good and no waste of spray water is caused.

Description

Technical Field

[0001] The invention relates to the technical field of industrial furnaces, in particular to tail gas filtering equipment for industrial furnaces. Background Art

[0002] Industrial furnaces are thermal equipment that heat materials or workpieces in industrial production by using the heat from fuel combustion or electric energy conversion. The furnace walls and linings of industrial furnaces should be tight and leak-free. Refractory materials are required to withstand heat, corrosion, friction and chemical erosion, and the furnace walls of the furnace body should remain intact without defects; the gaps between refractory materials and their products should not leak; and the integrity of the furnace must be strong.

[0003] The patent document with publication number CN214209950U discloses an exhaust gas treatment device for an industrial furnace, including a cooling box, a purification box and a filter box. The interior of the cooling box is provided with evenly distributed conduits, the interior of the purification box is fixedly installed with a spiral plate, a liquid inlet pipe is provided on one side of the top of the purification box, and the liquid inlet pipe is located at one end of the purification box and is fixedly connected to a water guide pipe, the interior of the filter box is provided with evenly distributed mounting frames, the interior of the mounting frame is installed with a filter screen, and one side of the filter box is provided with an exhaust pipe. In the above application document, high-temperature exhaust gas is introduced through the conduit, and the water in the cooling box can cool it down. The cooled exhaust gas is introduced through the air inlet pipe at the bottom of the purification box, rotates and rises along the spiral plate, and the purification liquid is transported to the interior of the purification box through the liquid inlet pipe, and is sprayed out through the evenly distributed through holes at the bottom of the spiral water guide pipe, and the introduced exhaust gas is sprayed for dust removal and adsorption. The spray dust removal effect is not good enough and it is easy to cause waste of the purification liquid. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an industrial furnace exhaust gas filtering device, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: an industrial furnace exhaust gas filtration device, comprising a spray box, a heat exchange tank and a purification box, the rear end of the spray box is penetrated and fixedly connected with an air intake pipe, the middle end of the air intake pipe is provided with an air pump, the side of the spray box is penetrated and fixedly connected with an air supply pipe 1, the end of the air supply pipe 1 away from the spray box is penetrated and fixedly connected with the heat exchange tank, the top and bottom of the heat exchange tank are penetrated and fixedly connected with a water inlet pipe and a drain pipe respectively, and the side of the heat exchange tank A gas pipe 2 is penetrated and fixedly connected, and the end of the gas pipe 2 away from the heat exchange tank is penetrated and fixedly connected to the purification box, and an exhaust pipe is penetrated and fixedly connected to the side of the purification box away from the gas pipe 2, and a filter plate, a moisture absorption plate and an activated carbon layer are arranged inside the purification box, and a spiral heat exchange tube is arranged inside the heat exchange tank, and the two ends of the spiral heat exchange tube are respectively penetrated and fixedly connected to the gas pipe 1 and the gas pipe 2, and a motor is arranged at the bottom of the heat exchange tank, and a stirring shaft is penetrated and rotatably connected to the bottom of the heat exchange tank , the output shaft of the motor is fixedly connected to the bottom of the stirring shaft, a spray dust removal mechanism, a rotating mechanism and a delay mechanism are arranged inside the spray box, and a pressure relief assembly is arranged on the top of the air inlet pipe; the spray dust removal mechanism includes a bevel gear 1, a cross bar, a pressure bin and a spray pipe, the bevel gear 1 is fixedly connected to the top of the stirring shaft, the cross bar passes through and is rotatably connected to the side of the heat exchange tank, the two ends of the cross bar are respectively fixedly connected with a bevel gear 2 and a rotating gear, the bottom of the pressure bin is fixedly connected to the top of the spray box, the side of the pressure bin passes through and is fixedly connected with a water suction pipe, the bottom of the pressure bin passes through and is fixedly connected with a water outlet pipe, the bottom of the spray pipe is rotatably connected to the inner bottom of the spray box, the end of the water outlet pipe away from the pressure bin passes through and is fixedly connected to the spray pipe, the internal piston of the pressure bin is slidably connected with a piston plate, the top of the piston plate is fixedly connected with a slide rod, the slide rod passes through and is slidably connected with the pressure bin, the surface of the slide rod is sleeved with a return spring, and the top of the slide rod is fixedly connected with a gear rod.

[0006] According to the above technical solution, bevel gear one is vertically meshed with bevel gear two, the upper teeth of the rotating gear are matched with the upper teeth of the gear rod, and the rotating gear is an incomplete gear. The rotation of bevel gear one will drive bevel gear two to rotate. When the rotating gear rotates and its upper teeth are meshed with the upper teeth of the gear rod, it will drive the gear rod to move upward.

[0007] According to the above technical solution, a one-way valve is provided inside the water suction pipe and the water outlet pipe, and a filter is provided at the end of the water suction pipe away from the pressure chamber. The one-way valves in the water suction pipe and the water outlet pipe can limit the flow direction of the liquid, and the filter prevents debris from entering the water suction pipe.

[0008] According to the above technical solution, the initial liquid level in the spray box is higher than the bottom end of the water suction pipe, and the initial liquid level in the spray box is lower than the air inlet pipe. The water suction pipe is located in the spraying water in the spray box and will not absorb waste gas into the pressure chamber.

[0009] According to the above technical solution, the rotating mechanism includes bevel gear three, a vertical rod and a driven gear, the bevel gear three is fixedly connected to the surface of the cross rod, the vertical rod passes through and is rotatably connected to the top of the spray box, the top and bottom of the vertical rod are respectively fixedly connected with bevel gear four and the driving gear, and the driven gear is fixedly connected to the surface of the spray pipe.

[0010] According to the above technical solution, the bevel gear three is vertically meshed with the bevel gear four, the driving gear is meshed with the driven gear, the rotation of the bevel gear three will drive the bevel gear four to rotate, and the rotation of the driving gear will drive the driven gear to rotate.

[0011] According to the above technical scheme, the delay mechanism includes an eccentric ring 1, an eccentric ring 2 and a fixed plate, the eccentric ring 1 and the eccentric ring 2 are both fixedly connected to the surface of the spray pipe, the top of the fixed plate is fixedly connected to the inner top of the spray box, the side of the fixed plate passes through and is fixedly connected with air pressure chamber 1 and air pressure chamber 2, one end of the air pressure chamber 1 is provided with an air bag 1, the other end of the air pressure chamber 1 is internally piston-slidingly connected with a push rod 1, the end of the push rod 1 away from the air pressure chamber 1 is fixedly connected with a closing plate, one end of the air pressure chamber 2 is provided with an air bag 2, the other end of the air pressure chamber 2 is internally piston-slidingly connected with a push rod 2, and the end of the push rod 2 away from the air pressure chamber 2 is fixedly connected with a pressure block.

[0012] According to the above technical solution, the closing plate is close to the front end of the air intake pipe in the initial state, and the side of the closing plate is tightly fitted with the inner wall of the spray box. When the closing plate moves downward, it will close the front end of the air intake pipe, and the exhaust gas will no longer enter the spray box, and the exhaust gas in the spray box will no longer be discharged.

[0013] According to the above technical solution, the pressure relief assembly includes a pressure relief pipe, which passes through and is fixedly connected to the top of the intake pipe, a connecting pipe passes through and is fixedly connected to the side of the pressure relief pipe, a pressure relief airbag is provided at the end of the connecting pipe away from the pressure relief pipe, a compression spring is provided inside the pressure relief pipe, a pressure plate is slidably connected to the inside of the pressure relief pipe through a compression spring piston, an opening is provided on the top of the pressure plate, a limiting rod is fixedly connected to the bottom of the pressure plate, a telescopic spring is provided on the surface of the limiting rod, and a closing block is slidably connected to the surface of the limiting rod through a telescopic spring.

[0014] According to the above technical solution, the diameter of the top of the opening is smaller than the diameter of the bottom of the opening, and the closing block is truncated cone-shaped as a whole. The closing block closes the opening in the initial state, and a gap is generated between the opening and the closing block when the closing block moves downward.

[0015] The present invention provides an industrial furnace tail gas filtering device, which has the following beneficial effects:

[0016] (1) The present invention sets a spray dust removal mechanism so that when the motor is turned on, the stirring shaft is driven to rotate. When the stirring shaft rotates to stir the heat exchange water in the heat exchange tank to accelerate the heat exchange, the water suction pipe absorbs the spray water in the spray box and discharges it to the spray pipe through the water outlet pipe through the spray pipe. Finally, the water is sprayed out from the spray pipe to remove dust from the exhaust gas. The dust removal effect is good and no waste of spray water is caused.

[0017] (2) The present invention sets a rotating mechanism so that when the spray pipe uses spray water to remove dust from the exhaust gas, the spray pipe can be driven to rotate through the cooperation of components such as bevel gear three, vertical rod, and bevel gear four. The spray pipe rotates to spray and increase the spraying range, so that the contact area between the exhaust gas and the spray water is increased, thereby effectively improving the overall spray dust removal effect.

[0018] (3) The present invention sets a delay mechanism so that when the spray pipe rotates to spray water to remove dust from the exhaust gas, the closing plate will intermittently move downward to close the front end of the air inlet pipe through the cooperation of the eccentric ring 2, the air pressure chamber 2, the air bag 2 and other components, so that the exhaust gas will no longer enter the spray box, and the exhaust gas in the spray box will no longer be discharged, thereby prolonging the residence time of the exhaust gas in the spray box and improving the effect of spray dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional front view of the overall structure of the present invention;

[0020] Figure 2 It is a three-dimensional back view of the overall structure of the present invention;

[0021] Figure 3 A three-dimensional cross-sectional view of the overall structure of the present invention;

[0022] Figure 4 A three-dimensional schematic diagram of the structure of the spray dust removal mechanism of the present invention;

[0023] Figure 5 A three-dimensional cross-sectional view of the spray dust removal mechanism structure of the present invention;

[0024] Figure 6 It is a three-dimensional schematic diagram of the rotating mechanism structure of the present invention;

[0025] Figure 7 A three-dimensional schematic diagram of the delay mechanism structure of the present invention;

[0026] Figure 8 It is a three-dimensional cross-sectional view of the pressure relief component structure of the present invention.

[0027] In the figure: 1, spray box; 2, air inlet pipe; 3, air pump; 4, air pipe 1; 5, heat exchange tank; 6, water inlet pipe; 7, air pipe 2; 8, purification box; 9, exhaust pipe; 10, filter plate; 11, moisture absorption plate; 12, activated carbon layer; 13, spiral heat exchange tube; 14, motor; 15, stirring shaft; 16, spray dust removal mechanism; 161, bevel gear 1; 162, cross bar; 163, bevel gear 2; 164, rotating gear; 165, pressure chamber; 166, water suction pipe; 167, water outlet pipe; 168, spray pipe; 169, piston plate; 1610, slide rod; 1611, reset spring; 1612, gear rod; 17, rotating mechanism; 171, bevel gear Wheel three; 172, vertical rod; 173, bevel gear four; 174, driving gear; 175, driven gear; 18, delay mechanism; 181, eccentric ring one; 182, eccentric ring two; 183, fixed plate; 184, air pressure chamber one; 185, air pressure chamber two; 186, air bag one; 187, push rod one; 188, closing plate; 189, air bag two; 1810, push rod two; 1811, pressure block; 19, pressure relief assembly; 191, pressure relief pipe; 192, connecting pipe; 193, pressure relief air bag; 194, compression spring; 195, pressure plate; 196, opening; 197, limit rod; 198, telescopic spring; 199, closing block; 20, drain pipe. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figure 1-Figure 7One embodiment of the present invention is: an exhaust gas filtration device for an industrial furnace, comprising a spray box 1, a heat exchange tank 5 and a purification box 8, the rear end of the spray box 1 is penetrated and fixedly connected with an air intake pipe 2, the middle end of the air intake pipe 2 is provided with an air pump 3, the side of the spray box 1 is penetrated and fixedly connected with an air supply pipe 1 4, the end of the air supply pipe 1 4 away from the spray box 1 is penetrated and fixedly connected with the heat exchange tank 5, the top and bottom of the heat exchange tank 5 are penetrated and fixedly connected with a water inlet pipe 6 and a drain pipe 20 respectively, the side of the heat exchange tank 5 is penetrated and fixedly connected with an air supply pipe 2 7, the end of the air supply pipe 2 7 away from the heat exchange tank 5 is penetrated and fixedly connected with the purification box 8, the purification box 8 is far away from the An exhaust pipe 9 is penetrated and fixedly connected to the side of the gas pipe 2 7, a filter plate 10, a moisture absorption plate 11 and an activated carbon layer 12 are arranged inside the purification box 8, a spiral heat exchange tube 13 is arranged inside the heat exchange tank 5, and the two ends of the spiral heat exchange tube 13 are respectively penetrated and fixedly connected to the gas pipe 1 4 and the gas pipe 2 7, a motor 14 is arranged at the bottom of the heat exchange tank 5, a stirring shaft 15 is penetrated and rotatably connected to the bottom of the heat exchange tank 5, and the output shaft of the motor 14 is fixedly connected to the bottom of the stirring shaft 15, a spray dust removal mechanism 16, a rotating mechanism 17 and a delay mechanism 18 are arranged inside the spray box 1, and a pressure relief component 19 is arranged at the top of the air inlet pipe 2;The spray dust removal mechanism 16 includes a bevel gear 161, a cross bar 162, a pressure chamber 165 and a spray pipe 168. The bevel gear 161 is fixedly connected to the top of the stirring shaft 15. The cross bar 162 penetrates and is rotatably connected to the side of the heat exchange tank 5. The two ends of the cross bar 162 are respectively fixedly connected to the bevel gear 163 and the rotating gear 164. The bottom of the pressure chamber 165 is fixedly connected to the top of the spray box 1. The side of the pressure chamber 165 penetrates and is fixedly connected with a water suction pipe 166. The bottom of the pressure chamber 165 penetrates and is fixedly connected with a water outlet pipe 167. The inside of the water suction pipe 166 and the water outlet pipe 167 are both provided with a one-way valve. The water suction pipe 166 and the water outlet pipe 167 are both provided with a one-way valve. 6 A filter is provided at one end away from the pressure chamber 165. The one-way valves in the water suction pipe 166 and the water outlet pipe 167 can limit the flow direction of the liquid. The filter prevents debris from entering the water suction pipe 166. The initial liquid level in the spray box 1 is higher than the bottom end of the water suction pipe 166, and the initial liquid level in the spray box 1 is lower than the air inlet pipe 2. The water suction pipe 166 is located in the spray water in the spray box 1 and will not absorb waste gas into the pressure chamber 165. The bottom of the spray pipe 168 is rotatably connected to the inner bottom of the spray box 1. The end of the water outlet pipe 167 away from the pressure chamber 165 penetrates and is fixedly connected to the spray pipe 168. The internal piston of the pressure chamber 165 is slidably connected to the piston Plate 169, the top of the piston plate 169 is fixedly connected with a slide bar 1610, the slide bar 1610 and the pressure chamber 165 are penetrated and slidably connected, the surface of the slide bar 1610 is sleeved with a return spring 1611, the top of the slide bar 1610 is fixedly connected with a gear rod 1612, the bevel gear 161 is vertically meshed with the bevel gear 2 163, the teeth on the rotating gear 164 are matched with the teeth on the gear rod 1612, and the rotating gear 164 is an incomplete gear, the rotation of the bevel gear 161 will drive the bevel gear 2 163 to rotate, and the rotating gear 164 rotates and its upper teeth are meshed with the teeth on the gear rod 1612, which will drive the gear rod 1612 to move upward. The rotating mechanism 17 includes a bevel gear 3 171, a vertical rod 172 and a driven gear 175. The bevel gear 3 171 is fixedly connected to the surface of the horizontal rod 162. The vertical rod 172 penetrates and is rotatably connected to the top of the spray box 1. The top and bottom of the vertical rod 172 are respectively fixedly connected to a bevel gear 4 173 and a driving gear 174. The driven gear 175 is fixedly connected to the surface of the spray pipe 168. The bevel gear 3 171 is vertically meshed with the bevel gear 4 173. The driving gear 174 is meshed with the driven gear 175. The rotation of the bevel gear 3 171 will drive the bevel gear 4 173 to rotate, and the rotation of the driving gear 174 will drive the driven gear 175 to rotate. ;

[0030] When in use, connect the air inlet pipe 2 to the industrial furnace waste gas pipe, add spray water into the spray box 1, the liquid level is above the bottom of the water absorption pipe 166, add heat exchange water into the heat exchange tank 5 through the water inlet pipe 6, turn on the air pump 3 to allow the waste gas to enter the spray box 1 through the air inlet pipe 2, and then enter the spiral heat exchange tube 13 through the air supply pipe 1 4 to exchange heat with the heat exchange water in the heat exchange tank 5. Turn on the motor 14 to drive the stirring shaft 15 to rotate and stir the heat exchange water in the heat exchange tank 5 to improve the heat exchange efficiency, and then discharge it into the purification box 8 through the air supply pipe 2 7, and after dehumidification by the moisture absorption plate 11 and purification by the filter plate 10 and the activated carbon layer 12, it is discharged from the exhaust pipe 9. When the stirring shaft 15 rotates, it also drives the bevel gear 1 161 to rotate, and the rotation of the bevel gear 1 161 drives the bevel gear 2 163 to rotate, and the rotation of the bevel gear 2 163 drives the cross bar 162 to rotate, and the rotation of the cross bar 162 drives the rotating gear 164 to rotate. At the beginning, it rotates The gear 164 rotates and its upper teeth mesh with the teeth on the gear rod 1612, which drives the gear rod 1612 to move upward. The gear rod 1612 moves upward and drives the slide bar 1610 and the piston plate 169 to move upward. The return spring 1611 is compressed. At this time, negative pressure is formed in the pressure chamber 165, so that the spray water in the spray box 1 is sucked into the pressure chamber 165 through the suction pipe 166. The suction pipe 166 is located in the spray water in the spray box 1, and will not suck exhaust gas into the pressure chamber 165. The filter can prevent debris from entering the suction pipe 166. When the rotating gear 164 rotates to the point where the toothless part is out of mesh with the teeth on the gear rod 1612, the return spring 1611 rebounds and drives the piston plate 169, the slide rod 1610 and the gear rod 1612 to move downward and restore. At this time, the piston plate 169 squeezes the spray water in the pressure chamber 165 to discharge it to the spray pipe 168 through the outlet pipe 167, and finally sprays it out from the spray pipe 168 to remove dust from the exhaust gas in the spray box 1, thereby forming a cycle with good dust removal effect and no waste of spray water. When rotating, it will also drive bevel gear three 171 to rotate, the rotation of bevel gear three 171 drives bevel gear four 173 to rotate, the rotation of bevel gear four 173 drives vertical rod 172 to rotate, the rotation of vertical rod 172 drives driving gear 174 to rotate, the rotation of driving gear 174 drives driven gear 175 to rotate, the rotation of driven gear 175 drives spray pipe 168 to rotate, the rotation of spray pipe 168 to spray increases the spraying range, so that the contact area between exhaust gas and spray water is increased, thereby effectively improving the overall spray dust removal effect.

[0031] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, the delay mechanism 18 includes an eccentric ring 181, an eccentric ring 182 and a fixed plate 183. The eccentric ring 181 and the eccentric ring 182 are fixedly connected to the surface of the spray pipe 168. The top of the fixed plate 183 is fixedly connected to the inner top of the spray box 1. The side of the fixed plate 183 is penetrated and fixedly connected with a pressure chamber 184 and a pressure chamber 2 185. One end of the pressure chamber 184 is provided with an air bag 186. The other end of the pressure chamber 184 has an internal piston slide. The push rod 187 is dynamically connected, and the end of the push rod 187 away from the air pressure chamber 184 is fixedly connected to a closing plate 188. In the initial state, the closing plate 188 is close to the front end of the air intake pipe 2, and the side of the closing plate 188 is tightly fitted with the inner wall of the spray box 1. When the closing plate 188 moves downward, the front end of the air intake pipe 2 is closed, and the exhaust gas no longer enters the spray box 1, and the exhaust gas in the spray box 1 is no longer discharged. One end of the air pressure chamber 185 is provided with an air bag 189, and the other end of the air pressure chamber 185 is slidably connected to the internal piston of the push rod 188. 1810, the end of the push rod 1810 away from the air pressure chamber 185 is fixedly connected with a pressure block 1811, the pressure relief assembly 19 includes a pressure relief pipe 191, the pressure relief pipe 191 passes through and is fixedly connected to the top of the intake pipe 2, the side of the pressure relief pipe 191 passes through and is fixedly connected with a connecting pipe 192, and the end of the connecting pipe 192 away from the pressure relief pipe 191 is provided with a pressure relief airbag 193, the interior of the pressure relief pipe 191 is provided with a compression spring 194, and the interior of the pressure relief pipe 191 is connected to a pressure plate 195 through the compression spring 194 piston sliding, and the pressure relief pipe 191 is provided with ... An opening 196 is provided at the top of the force plate 195, and a limiting rod 197 is fixedly connected to the bottom of the pressure plate 195. A telescopic spring 198 is provided on the surface of the limiting rod 197, and a closing block 199 is slidably connected to the surface of the limiting rod 197 via the telescopic spring 198. The diameter of the top of the opening 196 is smaller than the diameter of the bottom of the opening 196. The closing block 199 is truncated cone-shaped as a whole. The closing block 199 closes the opening 196 in the initial state, and a gap is generated between the opening 196 and the closing block 199 when the closing block 199 moves downward.

[0032] When in use, the spray pipe 168 rotates to spray, which drives the eccentric ring 181 to rotate and intermittently squeezes the air bag 186. When the air bag 186 is squeezed, the air pressure inside it enters the air pressure chamber 184 to push the push rod 187 to move downward. The push rod 187 moves downward and drives the closing plate 188 to move downward. When the closing plate 188 moves downward, it will close the front end of the air inlet pipe 2, and the exhaust gas will no longer enter the spray box 1. At the same time, the exhaust gas in the spray box 1 will no longer be discharged, thereby lengthening the exhaust gas. The residence time of the air in the spray box 1 is improved to improve the effect of spray dust removal. When the eccentric ring 181 leaves the airbag 186, the airbag 186 will rebound and the air pressure will return to the airbag 186. At this time, the push rod 187 moves upward to drive the closing plate 188 to restore and reopen the front end of the air inlet pipe 2. The eccentric ring 182 and the airbag 189 will drive the push rod 1810 and the pressure block 1811 to move downward repeatedly. The eccentric ring 181 and the eccentric ring 182 are staggered so as to stagger the air inlet pipe 2. During the time when the sealing plate 188 and the pressure block 1811 move downward, if the air pressure in the intake pipe 2 is too high during the period when the front end of the intake pipe 2 is closed, the air pressure will push the pressure plate 195 and the sealing block 199 to move upward synchronously over the connecting pipe 192, and the compression spring 194 will be compressed. At this time, the exhaust gas will enter the pressure relief airbag 193 through the connecting pipe 192 for storage, and the pressure relief airbag 193 will expand. When the intake pipe 2 is restored to be connected, the air pressure will also be restored, and the compression spring 194 will drive the pressure plate 195 The pressure block 1811 moves downward synchronously with the closing block 199 to restore, and the repeated downward movement of the pressure block 1811 will squeeze out the exhaust gas in the expanded pressure relief airbag 193, and the exhaust gas returns to the pressure relief pipe 191 through the connecting pipe 192, and pushes the closing block 199 to move downward. The telescopic spring 198 is compressed, and when the closing block 199 moves downward, a gap is generated between the opening 196 and the closing block 199, and the exhaust gas returns to the intake pipe 2 through the intervals, and then the telescopic spring 198 drives the closing block 199 to restore.

[0033] 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. An industrial furnace exhaust gas filtering device, comprising a spray box (1), a heat exchange tank (5) and a purification box (8), characterized in that: The rear end of the spray box (1) is penetrated by and fixedly connected with an air inlet pipe (2), the middle end of the air inlet pipe (2) is provided with an air pump (3), the side of the spray box (1) is penetrated by and fixedly connected with an air supply pipe 1 (4), the end of the air supply pipe 1 (4) away from the spray box (1) is penetrated by and fixedly connected with a heat exchange tank (5), the top of the heat exchange tank (5) is penetrated by and fixedly connected with a water inlet pipe (6), the bottom of the heat exchange tank (5) is penetrated by and fixedly connected with a drain pipe (20), the side of the heat exchange tank (5) is penetrated by and fixedly connected with an air supply pipe 2 (7), the end of the air supply pipe 2 (7) away from the heat exchange tank (5) is penetrated by and fixedly connected with a purification box (8), and the side of the purification box (8) away from the air supply pipe 2 (7) is penetrated by and fixedly connected with a drain pipe (20). an air pipe (9), a filter plate (10), a moisture absorption plate (11) and an activated carbon layer (12) are arranged inside the purification box (8), a spiral heat exchange tube (13) is arranged inside the heat exchange tank (5), the two ends of the spiral heat exchange tube (13) respectively penetrate and are fixedly connected to the air supply pipe 1 (4) and the air supply pipe 2 (7), a motor (14) is arranged at the bottom of the heat exchange tank (5), a stirring shaft (15) penetrates and is rotatably connected to the bottom of the heat exchange tank (5), the output shaft of the motor (14) is fixedly connected to the bottom of the stirring shaft (15), a spray dust removal mechanism (16), a rotating mechanism (17) and a delay mechanism (18) are arranged inside the spray box (1), and a pressure relief assembly (19) is arranged at the top of the air inlet pipe (2); The spray dust removal mechanism (16) comprises a bevel gear 1 (161), a cross bar (162), a pressure chamber (165) and a spray pipe (168); the bevel gear 1 (161) is fixedly connected to the top of the stirring shaft (15); the cross bar (162) penetrates and is rotatably connected to the side of the heat exchange tank (5); the two ends of the cross bar (162) are respectively fixedly connected to a bevel gear 2 (163) and a rotating gear (164); the bottom of the pressure chamber (165) is fixedly connected to the top of the spray box (1); the side of the pressure chamber (165) is penetrated and fixedly connected to a water suction pipe (166); the bottom of the pressure chamber (165) is penetrated and fixedly connected to A water outlet pipe (167) is connected, the bottom of the spray pipe (168) is rotatably connected to the inner bottom of the spray box (1), one end of the water outlet pipe (167) away from the pressure chamber (165) penetrates and is fixedly connected to the spray pipe (168), the internal piston of the pressure chamber (165) is slidably connected to a piston plate (169), the top of the piston plate (169) is fixedly connected to a slide rod (1610), the slide rod (1610) penetrates and is slidably connected to the pressure chamber (165), a return spring (1611) is sleeved on the surface of the slide rod (1610), and the top of the slide rod (1610) is fixedly connected to a gear rod (1612); The bevel gear 1 (161) is vertically meshed with the bevel gear 2 (163), the teeth on the rotating gear (164) are matched with the teeth on the gear rod (1612), and the rotating gear (164) is an incomplete gear; The initial liquid level in the spray box (1) is higher than the bottom end of the water suction pipe (166), and the initial liquid level in the spray box (1) is lower than the air inlet pipe (2); The rotating mechanism (17) comprises a bevel gear three (171), a vertical rod (172) and a driven gear (175); the bevel gear three (171) is fixedly connected to the surface of the cross rod (162); the vertical rod (172) penetrates and is rotatably connected to the top of the spray box (1); the top of the vertical rod (172) is fixedly connected to a bevel gear four (173); the bottom of the vertical rod (172) is fixedly connected to a driving gear (174); and the driven gear (175) is fixedly connected to the surface of the spray pipe (168); The bevel gear three (171) is vertically meshed with the bevel gear four (173), and the driving gear (174) is meshed with the driven gear (175); The delay mechanism (18) comprises an eccentric ring 1 (181), an eccentric ring 2 (182) and a fixed plate (183), wherein the eccentric ring 1 (181) and the eccentric ring 2 (182) are both fixedly connected to the surface of the spray pipe (168), the top of the fixed plate (183) is fixedly connected to the inner top of the spray box (1), and the side of the fixed plate (183) is penetrated and fixedly connected with a pressure chamber 1 (184) and a pressure chamber 2 (185), one end of the pressure chamber 1 (184) is provided with an air bag 1 (186), and the other end of the pressure chamber 1 (184) is slidably connected to a push rod 1 (187) through an internal piston, and the end of the push rod 1 (187) away from the pressure chamber 1 (184) is fixedly connected to a closing plate (188); In an initial state, the closing plate (188) is close to the front end of the air inlet pipe (2), and the side surface of the closing plate (188) is tightly fitted to the inner wall of the spray box (1); When the spray pipe (168) rotates to spray, it drives the eccentric ring (181) to rotate and intermittently squeezes the airbag (186). When the airbag (186) is squeezed, the air pressure inside it enters the air pressure chamber (184) to push the push rod (187) to move downward. The downward movement of the push rod (187) drives the closing plate (188) to move downward. When the closing plate (188) moves downward, it closes the front end of the air inlet pipe (2), and the exhaust gas no longer enters the spray box (1). At the same time, the exhaust gas in the spray box (1) is no longer discharged.

2. The industrial furnace exhaust gas filtration device according to claim 1, characterized in that: Both the water suction pipe (166) and the water outlet pipe (167) are provided with a one-way valve inside, and a filter screen is provided at one end of the water suction pipe (166) away from the pressure chamber (165).

3. The exhaust gas filtration equipment for industrial furnaces according to claim 2 is characterized in that: One end of the second air pressure chamber (185) is provided with a second air bag (189), the other end of the second air pressure chamber (185) is slidably connected to a second push rod (1810) through an internal piston, and the end of the second push rod (1810) away from the second air pressure chamber (185) is fixedly connected to a pressure block (1811).

4. The exhaust gas filtration equipment for industrial furnaces according to claim 3 is characterized in that: The pressure relief assembly (19) comprises a pressure relief pipe (191), the pressure relief pipe (191) passes through and is fixedly connected to the top of the intake pipe (2), a connecting pipe (192) passes through and is fixedly connected to the side of the pressure relief pipe (191), a pressure relief airbag (193) is provided at one end of the connecting pipe (192) away from the pressure relief pipe (191), a compression spring (194) is provided inside the pressure relief pipe (191), a pressure plate (195) is slidably connected to the inside of the pressure relief pipe (191) through the piston of the compression spring (194), an opening (196) is provided on the top of the pressure plate (195), a limiting rod (197) is fixedly connected to the bottom of the pressure plate (195), a telescopic spring (198) is provided on the surface of the limiting rod (197), and a closing block (199) is slidably connected to the surface of the limiting rod (197) through the telescopic spring (198).

5. The exhaust gas filtration equipment for industrial furnaces according to claim 4 is characterized in that: The diameter of the top of the opening (196) is smaller than the diameter of the bottom of the opening (196), and the closing block (199) is in the shape of a truncated cone as a whole.

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