A smoke exhaust purification device for a gas combustion kiln

Abstract

The smoke exhaust purification device for a gas-fired kiln belongs to the technical field of smoke purification. In order to solve the problem that when the existing smoke purification equipment filters the smoke dust, the filter screen is arranged opposite to the outlet of the intake pipe, which is easy to cause the mesh to be blocked due to dust adhesion, and the filter screen needs to be replaced regularly; the present invention arranges a pretreatment box on the side wall of the end of the main purification box, and the main purification box and the pretreatment box are connected based on a guide pipe, and on the outer wall of the inlet end of the guide pipe in the pretreatment box, a collecting box, a fixing rod, a positioning shaft and a vortex fan are used to arrange an extension ring with a guide cone and a connecting hole on the side wall, so that the air inlet on the side wall of the fixed end of the collecting box is away from the smoke inlet pipe on the side wall of the end of the pretreatment box, and the expansion slow flow of the pretreatment box and the return of the airflow carrying dust to the inner wall of the pretreatment box are used for secondary slow flow, so as to avoid excessive attachment of dust to the filter screen and cause the mesh to be blocked, thereby ensuring the efficient filtering of dust by the filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas purification, and in particular to a flue gas purification device for a gas combustion furnace. Background Art

[0002] The energy-saving natural gas tunnel kiln for sanitary ware is a tunnel kiln that uses natural gas as fuel. It is mainly used in the production process of sanitary ware, such as the firing of ceramic toilets, ceramic wash basins and other appliances. During the firing process of sanitary ceramic sanitary ware in the natural gas tunnel kiln, a large amount of flue gas will be generated. The main components of these flue gases include pollutants such as dust, nitrogen oxides (NOx) and sulfur oxides (SOx). Direct emission will cause serious pollution to the environment, so it is necessary to use the flue gas purification device to purify it and meet the emission standards before it can be safely discharged.

[0003] For example, CN219128706U discloses a furnace flue gas purification device, including a treatment box, a filter, a fixed box and a threaded rod. The filter is movably connected to the inner wall of the treatment box, the fixed box is fixedly connected to the front side of the treatment box, the front side of the filter extends to the outside of the treatment box, and the bottom of the filter is symmetrically provided with a fixed groove. Through the cooperation of the threaded rod and the transmission mechanism, the filter is convenient to install or remove. The operation is simple and convenient, and the filter is prevented from being blocked, thereby affecting the effect of flue gas filtering and causing inconvenience in use. It has good practicality. Then, when the existing flue gas purification device separates and filters the dust of the flue gas, the filter is often directly set at the output end of the flue gas intake pipe. After the flue gas enters the inside of the treatment box through the intake pipe, it is sprayed directly at the filter. Therefore, the dust of the flue gas is very easy to hang on the surface of the filter. After a period of use, the dust is easy to cause the filter to be blocked, and the filter needs to be disassembled, replaced and cleaned regularly.

[0004] Therefore, a fume exhaust purification device for a gas combustion kiln is introduced. Summary of the invention

[0005] The purpose of the present invention is to provide a smoke purification device for a gas-fired kiln, aiming to solve the problem in the above-mentioned background technology that when the existing smoke purification equipment filters the smoke dust, the filter screen is arranged opposite to the outlet of the air inlet pipe, which is easy to cause mesh clogging due to dust adhesion and requires regular replacement of the filter screen.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a smoke exhaust purification device for a gas-fired kiln, comprising a main purification box and a pretreatment box fixedly connected to the side wall of one end of the main purification box, a smoke inlet pipe is arranged on the side wall at the end of the pretreatment box, a controller is fixedly connected to the outer wall of one side of the main purification box adjacent to the pretreatment box, support frames are fixedly connected to the bottom sides of the main purification box respectively, the bottom end of the support frame is fixedly connected to the top of the middle section of the kiln body, and a refractory brick layer is stacked and glued on the inner wall of the kiln body, and the refractory brick layer is made of light mullite and light clay. The refractory bricks are mixed and stacked, and the gap between the refractory brick layer and the inner wall of the kiln body is filled with aluminum silicate blanket. Smoke exhaust ducts are respectively arranged inside the refractory brick layers on both sides of the middle section of the kiln body. The air inlets of the smoke exhaust ducts are arranged on the left and right close to the top plate and the bottom plate of the kiln body respectively. The air outlets of the smoke exhaust ducts extend to both sides of the top of the kiln body. A three-way manifold is fixedly connected to the top of the kiln body outside the air outlet of the smoke exhaust duct. A smoke exhaust pipe is fixedly connected to the outer wall of the top port of the three-way manifold through a flange. The end of the smoke exhaust pipe is fixedly connected to the inlet end of the corresponding smoke inlet pipe. The pretreatment box is fixed A flow guide pipe is provided through the inner wall of the fixed end, and the end of the flow guide pipe extends to the inside of the main purification box, and a collecting box is movably sleeved on the outer wall of the port at the input end of the flow guide pipe, and an extension ring is fixedly connected to the arc-surface outer wall at the edge of the fixed end of the collecting box, and the extension ring is movably engaged between the inner walls of the collecting box, and connecting holes are evenly spaced on the side wall of the extension ring. A flow guide cone is fixedly connected on the outer wall of the extension ring close to the main purification box, and the flow guide cone surrounds the outside of the connecting hole, and air inlets are evenly spaced on the side wall of the collecting box between the connecting hole and the flow guide pipe. A filter is embedded between the walls, a fixing rod is fixedly connected between the inner walls at both ends of the collecting box, a positioning shaft is fixedly connected to the side wall at the middle section of the fixing rod, the end of the positioning shaft extends to the inside of the guide pipe, and a vortex fan is fixedly connected to the outer wall of the positioning shaft in the guide pipe, an auxiliary cleaning part is fixedly connected to the inner wall of the collecting box corresponding to the air inlet, the auxiliary cleaning part is suspended close to the inner side of the filter, a dust collecting channel is provided on the bottom plate at the end of the pretreatment box away from the flue gas inlet pipe, the bottom of the dust collecting channel is a funnel-shaped structure, and a discharge valve pipe is fixedly connected to the middle of the bottom end of the dust collecting channel.

[0007] Furthermore, the auxiliary cleaning part includes a mounting shell and a positioning cylinder fixedly connected to an outer wall of one side of the mounting shell, the end of the positioning cylinder is fixedly connected to the arc inner wall of the collecting box, a counterweight slide rod is movably provided on the outer wall of the fixed end of the positioning cylinder, the end of the counterweight slide rod extends through and extends to the outside of the side wall of the collecting box, and the other end of the counterweight slide rod extends to the inside of the mounting shell, a rotating shaft is movably provided on the outer wall of the mounting shell close to the air inlet side, the end of the rotating shaft is movably connected to the inner wall of the other end of the mounting shell, and a clockwork spring is fixedly connected to the outer wall of the rotating shaft in the mounting shell, an adjusting rope is wound on the outer wall of the rotating shaft adjacent to the clockwork spring, and the end of the adjusting rope is fixedly connected to the outer wall of the end of the counterweight slide rod, and cleaning rods are respectively fixedly connected to the outer walls on both sides of the rotating shaft outside the mounting shell.

[0008] Furthermore, the cleaning rod is symmetrically arranged about the rotation axis, and the end of the counterweight slide rod outside the collecting box is a spherical structure. When the spherical head at the end of the counterweight slide rod is close to the curved outer wall of the collecting box, the clockwork spring remains in a normal relaxed state. At this time, the adjustment rope is tightened and wound around the outer wall of the rotating shaft.

[0009] Furthermore, the cleaning rod includes a fixed plate fixedly connected to the outer walls on both sides of the rotating shaft and a fixed strip fixedly connected to the edges of the two ends of the side walls in the middle section of the fixed plate, a deflection plate is movably connected between the side walls at the end of the fixed strip, a limiting groove is penetrated through the side wall of the deflection plate away from the rotating shaft, a push rod is movably connected between the inner walls of the limiting groove, the push rod movably penetrates the end of the fixed plate, a toggle rod is penetrated through the side wall at the end of the other end of the deflection plate, the end of the toggle rod movably penetrates the fixed plate, and the end of the toggle rod is fixedly connected to the limiting ball at the end of the toggle rod away from the fixed plate, and an elastic component is fixedly connected between the adjacent fixed plate and the side walls of the deflection plate.

[0010] Furthermore, the toggle rod is fixedly connected to the deflection plate, the deflection plate is suspended on one side of the fixed plate close to the mounting shell, and positioning grooves are evenly spaced on the side wall of the mounting shell end corresponding to the toggle rod, and the positioning grooves are evenly distributed in an annular shape on the outside of the rotating shaft.

[0011] Furthermore, the end of the push rod away from the deflection plate is spherical in structure. When the elastic component maintains a normal relaxed state, the deflection plate and the fixed plate are arranged parallel to each other. At this time, the limiting ball is movably engaged in the positioning groove, and the spherical head at the end of the push rod is suspended close to the outside of the filter.

[0012] Furthermore, a partition plate is fixedly connected between the inner walls at the upper and lower ends of the main purification box, and the partition plate divides the inner cavity of the main purification box from left to right into a first purification chamber and a second purification chamber. The bottoms of the first purification chamber and the second purification chamber are respectively fixedly connected with connected collecting hoppers, and the bottoms of the collecting hoppers are fixedly connected with discharge valve pipes. The top of the fixed protrusion on the inner wall of the first purification chamber is fixedly connected with a purification treatment component, and the side wall of the bottom input end of the purification treatment component is fixedly connected with a connected delivery pipe, and the end of the delivery pipe is fixedly connected to the end side wall of the guide pipe extending into the first purification chamber.

[0013] Furthermore, the purification treatment component includes a flow equalizing plate fixedly connected to the top of the fixed protrusion on the inner wall of the first purification chamber, the outer wall of one side of the flow equalizing plate is fixedly connected to the end of the conveying pipe, and the top of the flow equalizing plate is fixedly connected with a conductive mounting seat at a ring-shaped uniform interval, the top of the conductive mounting seat is fixedly connected to an electric heating wire, an isolation cover is fixedly sleeved on the outer wall of the raised end of the conductive mounting seat outside the electric heating wire, the isolation cover outside the electric heating wire is filled with dry sand, the top of the isolation cover is fixedly connected to the bottom of the connected annular tube, both ends of the annular tube are fixedly connected to the inner wall of the first purification chamber, a catalyst conduit is fixedly connected to the middle of the upper end of the flow equalizing plate, a connected solenoid valve tube is fixedly connected between the catalyst conduit and the side wall of the isolation cover near the bottom, and the other end of the catalyst conduit passes through the back plate of the first purification chamber and extends to the outside of the main purification box.

[0014] Furthermore, an air supply pipe is fixedly connected to the top of one end of the annular tube, and the end of the air supply pipe passes through the partition plate and extends into the second purification chamber. The second purification chamber is filled with absorption liquid, and an exhaust valve pipe is fixedly connected to the outer wall of the main purification box near the top of the second purification chamber. The exhaust valve pipe is communicated with the second purification chamber, and monitoring elements are fixedly connected to the inner walls of the side end of the second purification chamber and the lower end of the top plate, respectively.

[0015] Furthermore, a connecting port is provided at the top of the conductive mounting seat outside the electric heating wire, the connecting port is connected to the current equalizing disk, leakage holes are evenly spaced on the side wall of the isolation cover adjacent to the top of the conductive mounting seat, a filter paper cone is fitted between the inner walls of the leakage hole, a hollow cone is fitted in the leakage hole outside the filter paper cone, and a magnetic block is embedded on the side wall of the isolation cover adjacent to the upper side of the leakage hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The smoke exhaust purification device for a gas-fired kiln proposed in the present invention arranges a pretreatment box on the side wall of the end of a main purification box. The main purification box and the pretreatment box are connected based on a guide pipe, and an extension ring with a guide cone and a connecting hole is arranged on the outer wall of the inlet end of the guide pipe in the pretreatment box by utilizing the cooperation of a collecting box, a fixing rod, a positioning shaft and a vortex fan, so that the air inlet on the side wall of the fixed end of the collecting box is away from the smoke inlet pipe on the side wall of the end of the pretreatment box, and the expansion slow flow of the pretreatment box and the return of the airflow carrying dust to the inner wall of the pretreatment box are utilized to perform secondary slow flow, so that the dust is automatically deposited in the dust collecting channel at the bottom of the pretreatment box, so as to avoid the problem of excessive attachment of dust to the filter net causing clogging of its mesh, thereby ensuring the efficient filtering of dust by the filter net, effectively preventing the trouble of frequent replacement and cleaning of the filter net due to excessive attachment of dust, and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation structure of the kiln body and the main purification box of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a cross-sectional schematic diagram of the main purification box of the present invention;

[0021] Figure 4 It is a schematic cross-sectional structure diagram of the pretreatment box of the present invention;

[0022] Figure 5 It is a schematic diagram of the installation structure of the current collecting box and the flow guide pipe of the present invention;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the current collecting box and the flow guide pipe of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the auxiliary cleaning member of the present invention;

[0025] Figure 8 It is a cross-sectional schematic diagram of the mounting shell and the positioning cylinder of the present invention;

[0026] Fig. 9 It is a schematic diagram of the cleaning rod structure of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the purification treatment component of the present invention;

[0028] Fig.11 For the present invention Fig.10 Enlarged structural diagram at A in the middle.

[0029] In the figure: 1. main purification box; 11. partition plate; 12. collecting hopper; 13. unloading valve pipe; 14. purification treatment part; 141. flow equalizing plate; 142. conductive mounting seat; 143. electric heating wire; 144. isolation cover; 1441. leakage hole; 1442. filter paper cone; 1443. hollow cone; 1444. magnetic block; 145. dry sand; 146. annular pipe; 147. catalyst conduit; 148. solenoid valve pipe; 15. conveying pipe; 16. gas pipe; 17. exhaust valve pipe; 2. pretreatment box; 21. flue gas inlet pipe; 22. unloading valve pipe; 23. dust collection channel; 3. controller; 4. guide pipe; 5. collecting box; 51. extension ring; 52. connecting Through hole; 53, guide cone; 54, air inlet; 541, filter; 55, fixing rod; 56, positioning shaft; 57, vortex fan; 58, auxiliary cleaning part; 581, mounting shell; 582, positioning cylinder; 583, counterweight slide rod; 584, rotating shaft; 585, clockwork spring; 586, adjustment rope; 587, cleaning rod; 5871, fixing plate; 5872, fixing strip; 5873, deflection plate; 5874, limiting groove; 5875, push rod; 5876, toggle rod; 5877, limiting ball; 5878, elastic component; 588, positioning groove; 6, kiln body; 7, refractory brick layer; 8, smoke exhaust duct; 9, three-way manifold; 10, smoke exhaust pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 4, a smoke exhaust purification device for a gas-fired kiln, comprising a main purification box 1 with a square structure and a pretreatment box 2 with a square structure welded on the side wall of the end of the main purification box 1, the inner cavity of the pretreatment box 2 is a cylindrical structure, a smoke inlet pipe 21 is arranged on the side wall at the end of the pretreatment box 2, and a connecting flange is welded on the outer wall of the inlet end of the smoke inlet pipe 21, which is used to connect the smoke outlet pipe arranged on the top of the gas-fired kiln, and under the drive of the smoke exhaust fan, the polluted smoke generated by firing ceramic sanitary ware in the gas-fired kiln is sealed and transported to the pretreatment box 2, a controller 3 is fixedly connected to the outer wall of one side of the main purification box 1 adjacent to the pretreatment box 2 (the model of the controller 3 is preferably UC5533-SC1, which complies with the BACnetMS / TP network protocol, supports independent operation, and can also be connected to the BACnetMS / TP communication network), support frames are fixedly connected to the two sides of the bottom of the main purification box 1, the bottom end of the support frame is fixedly connected to the top of the middle section of the kiln body 6, and the bottom of the support frame The kiln body 6 is sealed with cement paste, and a refractory brick layer 7 is stacked and glued on the inner wall of the kiln body 6. The lower end of the kiln roof of the kiln body 6 is evenly spaced and fixed with hooks, which are embedded in the stacked refractory bricks to support them. The refractory brick layer 7 is a mixture of refractory bricks fired by lightweight mullite and lightweight clay. The lightweight clay brick is located between the lightweight mullite brick and the kiln body 6. The gap between the refractory brick layer 7 and the inner wall of the kiln body 6 is filled with an aluminum silicate blanket. The refractory brick layer 7 on both sides of the middle section of the kiln body 6 is filled with aluminum silicate blankets. Smoke exhaust ducts 8 are respectively arranged inside, and the air inlets of the smoke exhaust ducts 8 are respectively arranged on the left and right close to the top plate and the bottom plate of the kiln body 6. The air outlets of the smoke exhaust ducts 8 extend to both sides of the top of the kiln body 6. A three-way manifold 9 is fixedly connected to the top of the kiln body 6 outside the air outlet of the smoke exhaust duct 8. A smoke exhaust pipe 10 is fixedly connected to the outer wall of the top port of the three-way manifold 9 through a flange. The end of the smoke exhaust pipe 10 is fixedly connected to the inlet end of the corresponding smoke inlet pipe 21, and kiln car tracks are laid on both sides of the upper end of the bottom plate of the kiln body 6.

[0032] In order to solve the problem that when the existing flue gas purification equipment filters the flue gas dust, the filter is set directly opposite the air inlet pipe outlet, which is easy to be clogged due to dust adhesion and needs to be replaced regularly. Figure 1-Figure 6 , provide the following preferred technical solutions:

[0033] A guide tube 4 is provided on the inner wall of the fixed end of the pretreatment box 2, and the end of the guide tube 4 extends into the main purification box 1, and a collecting box 5 is provided on the outer wall of the port at the input end of the guide tube 4 in a movable sleeve, and an extension ring 51 is fixedly connected to the arc outer wall at the edge of the fixed end of the collecting box 5, and the outer end of the extension ring 51 is interference fit with the inner wall of the collecting box 5, and circular connecting holes 52 are evenly spaced on the side wall of the extension ring 51, and the connecting holes 52 are evenly arranged in two layers in the form of concentric circles, and a guide cone 53 is fixedly connected to the outer wall of the extension ring 51 on the side close to the main purification box 1, and the guide cone 53 guides the flow while using the small-caliber restriction at its own end to prevent the return airflow from carrying dust to the other side of the extension ring 51, and the guide cone 53 surrounds the outside of the connecting hole 52, and air inlets 54 are evenly spaced on the side wall of the collecting box 5 between the connecting hole 52 and the guide tube 4. A filter screen 541 is embedded between the inner walls of the air inlet 54, and the air inlet 54 and the filter screen 541 are both circular structures. A fixing rod 55 is fixedly connected between the inner walls at both ends of the air collecting box 5, and a positioning shaft 56 is fixedly connected to the side wall at the middle section of the fixing rod 55. The end of the positioning shaft 56 extends to the inside of the air guide pipe 4, and a vortex fan 57 is fixedly connected to the outer wall of the positioning shaft 56 in the air guide pipe 4. An auxiliary cleaning part 58 is fixedly connected to the inner wall of the air collecting box 5 corresponding to the air inlet 54, and the auxiliary cleaning part 58 is suspended close to the inner side of the filter screen 541. A dust collecting channel 23 is provided on the bottom plate at the end of the pretreatment box 2 away from the smoke inlet pipe 21. The bottom of the dust collecting channel 23 is a funnel-shaped structure. A discharge valve pipe 22 is fixedly connected to the middle of the bottom end of the dust collecting channel 23, and the discharge valve pipe 22 is electrically connected to the controller 3.

[0034] Specifically, the flue gas inlet pipe 21 guides the flue gas generated by the gas combustion kiln into the pretreatment box 2. The dust-containing flue gas hits the end side wall of the collecting box 5 and then is diverted to the edges around the end side wall of the collecting box 5. After the airflow is dispersed, it is sprayed from the connecting hole 52 on the side wall of the extension ring 51 and the guide cone 53 to the inner wall at the fixed end of the pretreatment box 2, so that the airflow and the dust inside it are greatly decelerated. After the airflow hits the inner wall at the fixed end of the pretreatment box 2, it is folded over and flows toward the collecting box 5. After being decelerated by the impact on the inner wall at the fixed end of the pretreatment box 2, the dust in the airflow is blown by gravity and subsequent airflow, and most of the dust in the flue gas gradually settles and slides along the inner wall at the fixed end of the pretreatment box 2, thereby accumulating in the dust collecting channel 23 at the bottom of the fixed end of the pretreatment box 2. The return airflow is filtered by the filter screen 541 at the air inlet 54 and then enters the interior of the collecting box 5, and is collected in the guide pipe 4 in the collecting box 5. Finally, it is transported to the main purification box 1 along the guide pipe 4, and is collected and moved along the inside of the guide pipe 4, driving the vortex fan 57 to rotate. The vortex fan 57 uses the positioning shaft 56 and the fixing rod 55 to drive the collecting box 5 to automatically rotate on the outer wall at the end of the guide pipe 4. The centrifugal force when the collecting box 5 rotates is used to make the remaining flue gas dust intercepted by the filter 541 concentrated on the edge of the extension ring 51, so that the separated flue gas dust can be better blown and settled into the dust collecting channel 23 by the subsequent airflow. By setting the air inlet 54 of the collecting box 5 away from the flue gas inlet pipe 21, the expansion slow flow of the pretreatment box 2 and the airflow carrying dust to impact the inner wall of the pretreatment box 2 are used for secondary slow flow, so as to avoid excessive attachment of dust to the filter 541 and cause the mesh to be blocked, thereby ensuring the efficient filtering of dust by the filter 541. After the controller 3 controls the discharge valve pipe 22 at the bottom of the dust collecting channel 23 to be opened, the accumulated dust can be automatically discharged from the equipment, which is convenient to use.

[0035] In order to further prevent the filter 541 from being clogged by dust, causing the operator to have to replace it regularly, such as Figure 1-9 As shown, this embodiment provides the following technical solutions:

[0036] The auxiliary cleaning member 58 includes a mounting shell 581 and a positioning cylinder 582 fixedly connected to the outer wall of one side of the mounting shell 581, the end of the positioning cylinder 582 is fixedly connected to the arc surface inner wall of the current collecting box 5, a counterweight slide 583 is movably provided on the outer wall of the fixed end of the positioning cylinder 582, the end of the counterweight slide 583 extends through and extends to the outside of the side wall of the current collecting box 5, and the other end of the counterweight slide 583 extends to the inside of the mounting shell 581, and a rotating shaft 584 is movably provided on the outer wall of the mounting shell 581 near the air inlet 54, the end of the rotating shaft 584 is movably connected to the inner wall of the other end of the mounting shell 581, and the outer wall of the rotating shaft 584 in the mounting shell 581 is fixedly connected There is a clockwork spring 585, and an adjusting rope 586 is wound on the outer wall of the rotating shaft 584 adjacent to the clockwork spring 585, and the end of the adjusting rope 586 is fixedly connected to the outer wall of the end of the counterweight slide 583, and cleaning rods 587 are fixedly connected to the outer walls on both sides of the rotating shaft 584 outside the mounting shell 581; the cleaning rods 587 are symmetrically arranged about the rotating shaft 584, and the end of the counterweight slide 583 outside the current collecting box 5 is a spherical structure. When the spherical head at the end of the counterweight slide 583 is close to the curved outer wall of the current collecting box 5, the clockwork spring 585 maintains a normal relaxed state. At this time, the adjusting rope 586 is tightened and wound around the outer wall of the rotating shaft 584.

[0037] The cleaning rod 587 includes a fixing plate 5871 fixedly connected to the outer walls of both sides of the rotating shaft 584 and a fixing strip 5872 fixedly connected to the edges of the two ends of the side wall of the middle section of the fixing plate 5871. A deflection plate 5873 is movably connected between the side walls at the end of the fixing strip 5872. A limiting groove 5874 is penetrated through the side wall of the deflection plate 5873 away from the rotating shaft 584. A push rod 5875 is movably connected between the inner walls of the limiting groove 5874. The push rod 5875 is movably arranged through the end of the fixed plate 5871, and a toggle rod 5876 is arranged through the side wall at the end of the other end of the deflection plate 5873. The end of the toggle rod 5876 is movably arranged through the fixed plate 5871, and the end of the toggle rod 5876 away from the fixed plate 5871 is fixedly connected to the limiting ball 5877, and an elastic component 5878 is fixedly connected between the adjacent side walls of the fixed plate 5871 and the deflection plate 5873 of the toggle rod 5876.

[0038] The toggle rod 5876 is fixedly connected to the deflection plate 5873, and the deflection plate 5873 is suspended on one side of the fixed plate 5871 close to the mounting shell 581, and positioning grooves 588 are evenly spaced apart on the side wall of the end of the mounting shell 581 corresponding to the toggle rod 5876, and the positioning grooves 588 are evenly distributed in a ring shape on the outside of the rotating shaft 584.

[0039] The end of the push rod 5875 away from the deflection plate 5873 is in a spherical structure. When the elastic component 5878 maintains a normal relaxed state, the deflection plate 5873 and the fixed plate 5871 are arranged parallel to each other. At this time, the limiting ball 5877 is movably engaged in the positioning groove 588, and the spherical head at the end of the push rod 5875 is suspended close to the outside of the filter screen 541.

[0040] Specifically, when the vortex fan 57 drives the collecting box 5 to rotate on the outer wall at the end of the guide tube 4 using the positioning shaft 56 and the fixing rod 55, the counterweight slide bar 583 is pulled out and moved to the outside of the collecting box 5 due to the rotational centrifugal force, and the counterweight slide bar 583 drives the adjusting pull rope 586 to pull the rotating shaft 584 to rotate inside the mounting shell 581, and promotes the rotating shaft 584 to retract the clockwork spring 585. When the rotating shaft 584 rotates, it drives the toggle rod 5876 on the fixing plate 5871 on the outer walls on both sides to slide against the outer wall of the mounting shell 581 using the limiting ball 5877. When the limiting ball 5877 rotates and slides against the outer wall of the mounting shell 581, the gap enters and exits the annular positioning groove 588. When the limiting ball 5877 slides in and out of the positioning groove 588, the height difference between it and the outer wall of the mounting shell 581 is used to The pushing rod 5876 moves back and forth on the fixed plate 5871, thereby pushing the deflection plate 5873 to repeatedly squeeze the elastic component 5878. The deflection plate 5873 uses the lever principle to repeatedly deflect based on the fixed bar 5872, thereby driving the push rod 5875 in the limiting groove 5874 to move back and forth at the end of the fixed plate 5871, thereby performing continuous slapping and vibration on the filter screen 541 in the reverse direction with the rotation of the rotating shaft 584, so that a small amount of dust attached to the filter screen 541 falls off in time to avoid clogging of the filter screen 541. After the flue gas purification is completed, the collection box 5 stops rotating, and the rotational centrifugal force disappears. Under the action of the clockwork spring 585, the rotating shaft 584 rotates in the reverse direction, thereby driving the push rod 5875 to clean the filter screen 541 for the second time, which fully ensures the cleanliness of the filter screen 541.

[0041] In order to fully purify the nitrogen oxides in the flue gas produced by the gas combustion kiln, Figure 1-Figure 3 and Figure 10-11 As shown, this embodiment provides the following technical solutions:

[0042] A partition plate 11 is fixedly connected between the inner walls at the upper and lower ends of the main purification box 1, and the partition plate 11 divides the inner cavity of the main purification box 1 from left to right into a first purification chamber and a second purification chamber (the chambers for treating polluted gases are not limited to two. According to the different types of flue gas generated by the gas combustion kiln, more chambers can be separated by the partition plate 11 to cooperate with the absorption liquid to separately treat the sulfur dioxide, carbon monoxide and volatile organic compounds (VOCs) that may be contained). The bottoms of the first purification chamber and the second purification chamber are respectively fixedly connected with interconnected collecting hoppers 12, and the bottoms of the collecting hoppers 12 are fixedly connected with discharge valve pipes 13. The top of the fixed protrusion on the inner wall of the first purification chamber is fixedly connected with a purification treatment component 14, and the side wall of the bottom input end of the purification treatment component 14 is fixedly connected with a interconnected conveying pipe 15, and the end of the conveying pipe 15 is fixedly connected to the end side wall of the guide pipe 4 extending into the first purification chamber.

[0043] The purification treatment element 14 includes a flow equalizing plate 141 fixedly connected to the top of the fixed protrusion on the inner wall of the first purification chamber, the outer wall of one side of the flow equalizing plate 141 is fixedly connected to the end of the conveying pipe 15, and the top of the flow equalizing plate 141 is evenly and fixedly connected with a conductive mounting seat 142 at an annular and evenly spaced interval, and the top of the conductive mounting seat 142 is fixedly connected with an electric heating wire 143, and an isolation cover 144 is fixedly sleeved on the outer wall of the protruding end of the conductive mounting seat 142 outside the electric heating wire 143. The isolation cover 144 outside the electric heating wire 143 is filled with dry sand 145, and the top of the isolation cover 144 is fixedly connected to the bottom of the connected annular pipe 146, and the isolation cover 144 and the annular pipe 14 6 A polymer waterproof and breathable membrane is provided on the inner wall of the connecting point, both ends of the annular tube 146 are fixedly connected to the inner wall of the first purification chamber, a catalyst conduit 147 is fixedly connected to the middle of the upper end of the flow equalizing plate 141, and the catalyst conduit 147 is externally connected to a delivery pump to pump ammonia as a catalyst to catalytically reduce nitrogen oxides in the flue gas generated by the gas combustion kiln to reduce them into nitrogen. A solenoid valve tube 148 is fixedly connected between the catalyst conduit 147 and the side wall of the isolation cover 144 near the bottom, and the solenoid valve on the solenoid valve tube 148 is electrically connected to the controller 3. The other end of the catalyst conduit 147 passes through the back plate of the first purification chamber and extends to the outside of the main purification box 1.

[0044] An air supply pipe 16 is fixedly connected to the top of one end of the annular tube 146, and the end of the air supply pipe 16 passes through the partition plate 11 and extends into the second purification chamber. The second purification chamber is filled with absorption liquid. An exhaust valve pipe 17 is fixedly connected to the outer wall of the main purification box 1 near the top of the second purification chamber. The exhaust valve pipe 17 is connected to the second purification chamber, and monitoring elements are fixedly connected to the inner walls of the side end and the lower end of the top plate of the second purification chamber (the monitoring elements include an MQ-2 gas smoke sensor for detecting and analyzing the smoke composition and concentration, a concentration sensor for detecting the absorption liquid concentration, and a liquid level sensor for detecting the remaining amount of absorption liquid, etc., and are not limited to the types of sensors listed above). The monitoring elements are electrically connected to the controller 3, and the monitoring data is displayed on the screen of the controller 3.

[0045] A connecting port is provided at the top of the conductive mounting seat 142 outside the electric heating wire 143, and the connecting port is connected to the current equalizing plate 141. Liquid leakage holes 1441 are evenly spaced on the side wall of the isolation cover 144 adjacent to the top of the conductive mounting seat 142. A filter paper cone 1442 is fitted between the inner walls of the liquid leakage holes 1441. The filter paper cone 1442 is made of a magnetic metal material, and its surface is coated with a corrosion-resistant coating. The liquid leakage holes 1441 on the outside of the filter paper cone 1442 1 is provided with a hollow cone 1443, and a magnetic block 1444 is embedded on the side wall of the isolation cover 144 adjacent to the upper and oblique position of the leakage hole 1441. The magnetic block 1444 is used to absorb the hollow cone 1443, so that the hollow cone 1443 can press the filter paper cone 1442 to fully expand it and fit it on the inner wall of the leakage hole 1441, so as to filter and infiltrate the generated water accumulated in the dry sand 145 and discharge it out of the isolation cover 144 for recovery.

[0046] Specifically, the flue gas transported by the guide pipe 4 enters the flow equalizing plate 141 through the transport pipe 15, and moves upward to the isolation cover 144, and flows upward along the gap of the dry sand 145 in the isolation cover 144. At the same time, the solenoid valve pipe 148 is opened, and the catalyst conduit 147 pumps the ammonia gas as a catalyst into the isolation cover 144. The nitrogen oxide gas and the ammonia gas in the flue gas converge in the gap of the dry sand 145 and then slowly meander and merge. The restriction of the dry sand 145 promotes the full contact between the nitrogen oxide gas and the ammonia gas, so that after the electric heating wire 143 is turned on and the dry sand 145 is evenly heated by heat conduction, the nitrogen oxide gas is reduced to nitrogen and water vapor, ensuring the nitrogen oxide gas The purification treatment effect is achieved, the water vapor soaks the dry sand 145 and turns into deposited water which accumulates at the bottom of the isolation cover 144, forming a liquid seal for the leakage hole 1441 to prevent gas leakage, and the deposited water finally drips and seeps out from the leakage hole 1441 at the bottom of the isolation cover 144, and accumulates in the collecting hopper 12 at the bottom of the first purification chamber waiting to be discharged and recovered, while the nitrogen and other gas flows are gathered into the annular pipe 146 at the top of the isolation cover 144, and then introduced into the absorption liquid in the second purification chamber along the gas transmission pipe 16 for reaction treatment, and the remaining gas is discharged from the exhaust valve pipe 17 after the monitoring element can detect no pollutant gas components, and the products generated by each purification reaction are discharged from the discharge valve pipe 13 of the collecting hopper 12 at the bottom of each purification chamber for corresponding treatment.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A smoke exhaust purification device for a gas-fired kiln, comprising a main purification box (1) and a pretreatment box (2) fixedly connected to a side wall at one end of the main purification box (1), a smoke inlet pipe (21) is arranged on the side wall at the end of the pretreatment box (2), and a controller (3) is fixedly connected to the outer wall of one side of the main purification box (1) adjacent to the pretreatment box (2), characterized in that: The bottom sides of the main purification box (1) are respectively fixedly connected with support frames, the bottom ends of the support frames are fixedly connected to the top of the middle section of the kiln body (6), and a refractory brick layer (7) is stacked and bonded on the inner wall of the kiln body (6), the refractory brick layer (7) is a mixture of lightweight mullite and lightweight clay fired refractory bricks, and the gap between the refractory brick layer (7) and the inner wall of the kiln body (6) is filled with an aluminum silicate blanket. The refractory brick layers (7) on both sides of the middle section of the kiln body (6) are respectively provided with smoke exhaust ducts (8), and the air inlets of the smoke exhaust ducts (8) are respectively provided on the left and right sides close to the top plate and the bottom plate of the kiln body (6), and the air outlet of the smoke exhaust duct (8) extends to the kiln body (6). 6) on both sides of the top, a three-way manifold (9) is fixedly connected to the top of the kiln body (6) outside the air outlet of the smoke exhaust duct (8), a smoke exhaust pipe (10) is fixedly connected to the outer wall of the top port of the three-way manifold (9) through a flange, and the end of the smoke exhaust pipe (10) is fixedly connected to the inlet end of the corresponding smoke inlet pipe (21), and a guide pipe (4) is provided through the inner wall of the fixed end of the pretreatment box (2), and the end of the guide pipe (4) extends through and extends to the inside of the main purification box (1), and a collecting box (5) is movably inserted on the outer wall of the port of the input end of the guide pipe (4), and an extension ring ( 51), the extension ring (51) is movably engaged between the inner walls of the collecting box (5), the side wall of the extension ring (51) is evenly spaced with connecting holes (52), the outer wall of the extension ring (51) close to the main purification box (1) is fixedly connected with a guide cone (53), the guide cone (53) surrounds the outside of the connecting hole (52), the side wall of the collecting box (5) between the connecting hole (52) and the guide pipe (4) is evenly spaced with air inlets (54), the inner walls of the air inlets (54) are embedded with a filter screen (541), the inner walls of the two ends of the collecting box (5) are fixedly connected with a fixing rod (55), and the side wall at the middle section of the fixing rod (55) is A positioning shaft (56) is fixedly connected to the top, the end of the positioning shaft (56) extends to the inside of the guide tube (4), and a vortex fan (57) is fixedly connected to the outer wall of the positioning shaft (56) in the guide tube (4); an auxiliary cleaning component (58) is fixedly connected to the inner wall of the collecting box (5) corresponding to the air inlet (54), and the auxiliary cleaning component (58) is suspended close to the inner side of the filter screen (541); a dust collecting channel (23) is arranged on the bottom plate at the end of the pretreatment box (2) away from the smoke inlet pipe (21); the bottom of the dust collecting channel (23) is a funnel-shaped structure, and a discharge valve pipe (22) is fixedly connected to the middle of the bottom end of the dust collecting channel (23); The auxiliary cleaning member (58) comprises a mounting shell (581) and a positioning tube (582) fixedly connected to an outer wall of one side of the mounting shell (581); the end of the positioning tube (582) is fixedly connected to the arcuate inner wall of the current collecting box (5); a counterweight slide bar (583) is movably provided on the outer wall of the fixed end of the positioning tube (582); the end of the counterweight slide bar (583) extends through the outer wall of the current collecting box (5); the other end of the counterweight slide bar (583) extends to the inside of the mounting shell (581); a rotating shaft (584) is movably provided on the outer wall of the mounting shell (581) on the side close to the air inlet (54); the end of the rotating shaft (584) is movably connected to the inner wall of the other end of the mounting shell (581); and the outer wall of the rotating shaft (584) in the mounting shell (581) is fixedly connected to the inner wall of the other end of the mounting shell (581). A spring (585) is connected, and an adjusting rope (586) is wound on the outer wall of the rotating shaft (584) adjacent to the spring spring (585), and the end of the adjusting rope (586) is fixedly connected to the outer wall of the end of the counterweight slide bar (583), and cleaning rods (587) are respectively fixedly connected to the outer walls on both sides of the rotating shaft (584) outside the mounting shell (581); the cleaning rods (587) are symmetrically arranged about the rotating shaft (584), and the end of the counterweight slide bar (583) outside the current collecting box (5) is a spherical structure. When the spherical head at the end of the counterweight slide bar (583) is close to the curved outer wall of the current collecting box (5), the spring spring (585) maintains a normal relaxed state, and at this time, the adjusting rope (586) is tightened and wound around the outer wall of the rotating shaft (584); The cleaning rod (587) comprises a fixing plate (5871) fixedly connected to the outer walls on both sides of the rotating shaft (584) and a fixing strip (5872) fixedly connected to the edges of the two ends of the side walls of the middle section of the fixing plate (5871); a deflection plate (5873) is movably connected between the side walls at the ends of the fixing strip (5872); a limiting groove (5874) is penetrated through the side wall of the deflection plate (5873) away from the rotating shaft (584); a push rod (5875) is movably connected between the inner walls of the limiting groove (5874); and the push rod (5875) is movably arranged to penetrate the end of the fixed plate (5871), and a toggle rod (5876) is arranged to penetrate the side wall at the end of the other end of the deflection plate (5873), and the end of the toggle rod (5876) is movably arranged to penetrate the fixed plate (5871), and the end of the toggle rod (5876) away from the fixed plate (5871) is fixedly connected to the limiting ball (5877), and an elastic component (5878) is fixedly connected between the adjacent side walls of the fixed plate (5871) and the deflection plate (5873) of the toggle rod (5876).

2. The exhaust gas purification device for a gas combustion furnace according to claim 1, characterized in that: The toggle rod (5876) is fixedly connected to the deflection plate (5873), the deflection plate (5873) is suspended on one side of the fixed plate (5871) close to the mounting shell (581), and positioning grooves (588) are evenly spaced apart on the side wall of the end of the mounting shell (581) corresponding to the toggle rod (5876), and the positioning grooves (588) are evenly distributed in a ring shape on the outer side of the rotating shaft (584).

3. The exhaust gas purification device for a gas combustion furnace according to claim 1, characterized in that: The end of the push rod (5875) away from the deflection plate (5873) is in a spherical structure. When the elastic component (5878) maintains a normal relaxation state, the deflection plate (5873) and the fixed plate (5871) are arranged parallel to each other. At this time, the limiting ball (5877) is movably engaged in the positioning groove (588), and the spherical head at the end of the push rod (5875) is suspended close to the outside of the filter screen (541).

4. The smoke exhaust purification device for a gas combustion kiln according to claim 1, characterized in that: A partition plate (11) is fixedly connected between the inner walls at the upper and lower ends of the main purification box (1), and the partition plate (11) divides the inner cavity of the main purification box (1) from left to right into a first purification chamber and a second purification chamber. The bottoms of the first purification chamber and the second purification chamber are respectively fixedly connected with interconnected collecting hoppers (12), and the bottoms of the collecting hoppers (12) are fixedly connected with discharge valve pipes (13). The top of the fixed protrusion on the inner wall of the first purification chamber is fixedly connected with a purification treatment component (14), and the side wall of the bottom input end of the purification treatment component (14) is fixedly connected with a interconnected delivery pipe (15), and the end of the delivery pipe (15) is fixedly connected to the end side wall of the guide pipe (4) extending to the first purification chamber.

5. A smoke exhaust purification device for a gas combustion kiln as claimed in claim 4, characterized in that: The purification treatment element (14) comprises a flow balancing plate (141) fixedly connected to the top of a fixed protrusion on the inner wall of the first purification chamber, the outer wall of one side of the flow balancing plate (141) is fixedly connected to the end of the conveying pipe (15), and the top of the flow balancing plate (141) is evenly and fixedly connected with a conductive mounting seat (142) at an annular shape at a uniform interval, the top of the conductive mounting seat (142) is fixedly connected with an electric heating wire (143), and an isolation cover (144) is fixedly sleeved on the outer wall of the protruding end of the conductive mounting seat (142) outside the electric heating wire (143), and the outer side of the electric heating wire (143) is fixedly connected with the outer wall of the protruding end of the conductive mounting seat (142). The interior of the isolation cover (144) is filled with dry sand (145), the top of the isolation cover (144) is fixedly connected to the bottom of a connected annular tube (146), both ends of the annular tube (146) are fixedly connected to the inner wall of the first purification chamber, a catalyst conduit (147) is fixedly connected to the middle of the upper end of the flow equalizing plate (141), a connected electromagnetic valve tube (148) is fixedly connected between the catalyst conduit (147) and the side wall of the isolation cover (144) near the bottom, and the other end of the catalyst conduit (147) passes through the back plate of the first purification chamber and extends to the outside of the main purification box (1).

6. A smoke exhaust purification device for a gas combustion kiln as claimed in claim 5, characterized in that: An air supply pipe (16) is fixedly connected to the top of one end of the annular tube (146), and the end of the air supply pipe (16) passes through the partition plate (11) and extends into the second purification chamber. The second purification chamber contains absorption liquid. An exhaust valve pipe (17) is fixedly connected to the outer wall of the main purification box (1) near the top of the second purification chamber. The exhaust valve pipe (17) is connected to the second purification chamber, and monitoring elements are fixedly connected to the inner walls of the side end of the second purification chamber and the lower end of the top plate, respectively.

7. The exhaust gas purification device for a gas combustion furnace according to claim 5, characterized in that: A connecting port is provided at the top of the conductive mounting seat (142) outside the electric heating wire (143), and the connecting port is connected to the current equalizing plate (141). Liquid leakage holes (1441) are evenly spaced apart on the side wall of the isolation cover (144) adjacent to the top of the conductive mounting seat (142). A filter paper cone (1442) is fitted between the inner walls of the liquid leakage holes (1441). A hollow cone (1443) is fitted in the liquid leakage hole (1441) outside the filter paper cone (1442). A magnetic block (1444) is embedded on the side wall of the isolation cover (144) adjacent to the upper and oblique sides of the liquid leakage holes (1441).

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