Environment-friendly dust removal equipment for industrial kiln

Abstract

The environment-friendly dust removal equipment comprises a vertical pipe with the bottom arranged in a sealed mode, an air inlet pipe is arranged on one side of the bottom of the vertical pipe, a [-shaped pipe communicated with the vertical pipe is arranged on the upper half wall of the vertical pipe, a filter plate is further arranged in the vertical pipe, and a circle of filter screen is arranged on the edge of the bottom of the filter plate in a surrounding mode. A sleeve with a polygonal cross section is further arranged in the middle of the filter plate, a mounting plate allowing the top end of the sleeve to penetrate through is arranged in the vertical pipe, the sleeve below the mounting plate is sleeved with a spring, and a round rod is further fixed in the sleeve through a bearing; an L-shaped scraping plate attached to the bottom end face of the filter plate and the inner side wall of the filter screen is arranged at the bottom end of the round rod, an annular base is arranged at the top end of the round rod, a transverse rod connected with the top end of the round rod is arranged in the annular base, and a plurality of sets of push plates are arranged on the outer wall of the annular base in the radial direction. According to the invention, automatic cleaning of impurities on the filter plate can be realized, and continuous dust removal of waste gas can also be realized.

Description

Technical Field

[0008] ,

[0007] , ,

[0006] , ,

[0005] ,

[0001] The present invention relates to the technical field of industrial kilns, and particularly relates to an environmental protection dust removal device for industrial kilns. Background Art

[0002] Industrial kilns include roller kilns, spray drying towers, tunnel kilns, shuttle kilns, pusher kilns, flame guiding kilns, etc. The main atmospheric pollutants emitted are conventional control factors: particulate matter, sulfur dioxide, nitrogen oxides, and flue gas blackness; there are also characteristic pollution factors: hydrogen chloride, hydrogen fluoride, oxides of lead, cadmium, cobalt, and nickel. According to investigation and statistics, the SO2 emission concentration of ceramic industrial kilns using coal, heavy oil, diesel, etc. is about 800 - 5000 mg / m3, and the NOX emission concentration is 200 - 800 mg / m3.

[0003] Currently, the treatment method for industrial kiln waste gas is desulfurization, denitrification, and dust removal. In the dust removal step, the dust in the industrial kiln waste gas is filtered through a filter screen. Since the industrial kiln waste gas contains a large amount of dust, the filter screen needs to be frequently replaced or cleaned to avoid blockage of the filter screen, so as to ensure the filtering efficiency of the waste gas. However, the frequent operation of the filter screen by people will, on the one hand, affect the continuity of the filtering work, and on the other hand, will undoubtedly increase the labor intensity. Summary of the Invention

[0004] The purpose of the present invention is to provide an environmental protection dust removal device for industrial kilns.

[0005] The technical problems of the present invention are mainly solved by the following technical solutions:

[0006] An environmental protection dust removal device for industrial kilns includes a vertical pipe with a sealed bottom. An air inlet pipe is provided on one side of the bottom of the vertical pipe. A U-shaped pipe is provided on the upper half wall of the vertical pipe and is connected to it. A filter plate is also provided in the vertical pipe. A filter screen is arranged in a circle around the bottom edge of the filter plate. A sleeve with a polygonal cross-section is also provided in the middle of the filter plate. An installation plate for the top end of the sleeve to pass through is provided in the vertical pipe. A spring is sleeved on the sleeve below the installation plate. A round rod is fixed in the sleeve through a bearing. An L-shaped scraper is provided at the bottom end of the round rod and is in contact with the bottom end face of the filter plate and the inner side wall of the filter screen. A ring seat is provided at the top end of the round rod. A cross bar connected to the top end of the round rod is provided in the ring seat. Multiple groups of push plates are radially arranged on the outer wall of the ring seat;

[0007] In the first state, the filter plate and the filter screen are located below the U-shaped pipe, the ring seat and the push plates are located between the upper and lower horizontal ends of the U-shaped pipe, and the gas introduced through the air inlet pipe is filtered by the filter plate and then discharged through the vertical pipe;

[0008] Second state: The filter plate is located between the upper and lower horizontal ends of the U-shaped pipe. The filter screen seals the opening at the lower horizontal end of the U-shaped pipe. The annular seat and the push plate are facing the opening at the upper horizontal end of the U-shaped pipe. The gas introduced through the air inlet pipe is filtered by the filter screen and then discharged from the upper horizontal end of the U-shaped pipe. The gas discharged from the U-shaped pipe blows the push plate and the annular seat, and drives the round rod to rotate through the cross bar. The round rod rotates and drives the scraper to clean the filtering end faces of the filter plate and the filter screen.

[0009] Preferably, a sewage discharge pipe is provided at the bottom of the vertical pipe, and a manhole is also provided at the bottom of the side wall of the vertical pipe.

[0010] Preferably, a horn-shaped flow guide hopper with an upward opening is provided at the inner bottom of the vertical pipe. The bottom end of the round rod is fixedly connected to the inner wall of the flow guide hopper. A slag discharge pipe is provided downward at the middle of the bottom of the flow guide hopper. A fixed pipe sleeving the slag discharge pipe is provided on the bottom wall of the vertical pipe. A control valve is provided at the bottom end of the fixed pipe. The outlet end of the air inlet pipe extends to one side of the bottom of the flow guide hopper.

[0011] Preferably, a polygonal through hole for the sleeve to pass through is provided at the end of the mounting plate. The size of the sleeve is adapted to the size of the through hole. A limiting strip located above the mounting plate is provided around the top end of the sleeve.

[0012] Preferably, a surrounding edge that adheres to the inner wall of the vertical pipe is provided around the top edge of the filter plate. In the first state, the surrounding edge seals the opening at the lower horizontal end of the U-shaped pipe. In the second state, the surrounding edge is displaced between the upper and lower horizontal ends of the U-shaped pipe.

[0013] Preferably, the number of U-shaped pipes is two groups. The two groups of U-shaped pipes are respectively located on both sides of the vertical pipe, and the upper horizontal ends of the two groups of U-shaped pipes are tangent to the corresponding front and rear side walls of the vertical pipe respectively.

[0014] The beneficial effects of the present invention are as follows: When the filter plate in the present invention is blocked, the air flow can push components such as the filter plate, the filter screen, the annular seat and the push plate to move upward. The air flow introduced into the vertical pipe is filtered by the filter screen and discharged from the U-shaped pipe. The gas discharged from the U-shaped pipe blows the push plate and drives the round rod to rotate on the bearing through the annular seat and the cross bar. Then the gas is discharged through the opening at the top of the vertical pipe. The rotating round rod will drive the scraper to rotate to scrape and clean the bottom end face of the blocked filter plate at this time. The impurities obtained by cleaning fall into the flow guide hopper and are discharged through the slag discharge pipe. As the impurities on the bottom end face of the filter plate are cleaned, the resistance to the air flow also slowly decreases. At this time, under the pushing force of the spring stretching force, the filter plate slowly resets, and directly or indirectly drives components such as the filter screen, the surrounding edge, the annular seat and the push plate to reset, realizing the automatic cleaning effect on the filter plate indirectly by means of the thrust generated by the air flow without shutting down the machine, reducing the number of times of manually cleaning the filter plate, and improving the work efficiency while reducing the labor intensity. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a cross-sectional view of the present invention;

[0017] Figure 3 is Figure 2 a schematic structural diagram in another state;

[0018] Figure 4 is a top view of the present invention.

[0019] In the figure: 1, vertical pipe; 2, intake pipe; 3, U-shaped pipe; 4, filter plate; 5, filter net; 6, sleeve; 7, mounting plate; 8, spring; 9, round rod; 10, scraper; 11, annular seat; 12, cross bar; 13, push plate; 14, sewage discharge pipe; 15, diversion hopper; 16, slag discharge pipe; 17, fixed pipe; 18, limiting strip; 19, surrounding edge. Specific embodiments

[0020] The technical solution of the present invention will be further specifically described below through embodiments in combination with the accompanying drawings.

[0021] An environmental protection dust removal device for an industrial kiln includes a vertically arranged pipe 1 with a sealed bottom. An intake pipe 2 is provided on one side of the bottom of the vertical pipe 1. A U-shaped pipe 3 is provided on the upper half wall of the vertical pipe 1 and is connected to it. The number of the U-shaped pipes 3 is two groups, and the two groups of U-shaped pipes 3 are respectively located on both sides of the vertical pipe 1, and the horizontal ends above the two groups of U-shaped pipes 3 are tangent to the corresponding front and rear side walls of the vertical pipe 1 respectively.

[0022] A filter plate 4 is further provided in the vertical pipe 1. A filter net 5 is arranged in a circular shape around the bottom edge of the filter plate 4. A sleeve 6 with a polygonal cross-section is also provided in the middle of the filter plate 4. A mounting plate 7 for the top end of the sleeve 6 to pass through is provided in the vertical pipe 1. A polygonal through-hole for the sleeve 6 to pass through is provided at the end of the mounting plate 7. The size of the sleeve 6 is adapted to the size of the through-hole. A limiting strip 18 is arranged in a circular shape above the mounting plate 7 around the top end of the sleeve 6 to prevent the sleeve 6 from slipping out of the through-hole. The polygonal through-hole catches the outer wall of the sleeve 6 to prevent components such as the sleeve ⑥ and the filter plate 4 from rotating.

[0023] A spring 8 is sleeved on the sleeve 6 below the mounting plate ⑦. A round rod 9 is fixed in the sleeve 6 through a bearing. An L-shaped scraper 10 that is in contact with the bottom surface of the filter plate 4 and the inner side wall of the filter net 5 is provided at the bottom end of the round rod 9. An annular seat 11 is provided at the top end of the round rod 9. A cross bar 12 connected to the top end of the round rod 9 is provided in the annular seat 11. Multiple groups of push plates 13 are radially arranged on the outer wall of the annular seat 11;

[0024] In the first state, the filter plate 4 and the filter net 5 are located below the U-shaped pipe 3, the annular seat 11 and the push plate 13 are located between the upper and lower horizontal ends of the U-shaped pipe 3, and the gas introduced through the air inlet pipe 2 is filtered by the filter plate 4 and then discharged through the vertical pipe 1.

[0025] In the second state, the filter plate 4 is located between the upper and lower horizontal ends of the U-shaped pipe 3, the filter net 5 seals the opening of the lower horizontal end of the U-shaped pipe 3, the annular seat 11 and the push plate 13 are正对 the opening of the upper horizontal end of the U-shaped pipe 3, and the gas introduced through the air inlet pipe 2 is filtered by the filter net 5 and then discharged through the upper horizontal end of the U-shaped pipe 3. Among them, the gas discharged from the U-shaped pipe 3 blows the push plate 13 and the annular seat 11 to drive the round rod 9 to rotate through the cross bar 12, and the round rod 9 rotates and带动 the scraper 10 to clean the filtering end faces of the filter plate 4 and the filter net 5.

[0026] In this embodiment, a sewage discharge pipe 14 is provided at the bottom of the vertical pipe 1, and a manhole is also provided at the bottom of the side wall of the vertical pipe 1. The accumulated impurities at the bottom of the vertical pipe 1 can be discharged and cleaned through the sewage discharge pipe 14, and the manhole facilitates people to enter the vertical pipe 1 for maintenance and other work.

[0027] 0]]As shown in Figure 2 、 3 所示, a horn-shaped flow guiding hopper 15 with an upward opening is provided at the bottom of the vertical pipe 1. The bottom end of the round rod 9 is fixedly connected to the inner wall of the flow guiding hopper 15. A slag discharge pipe 16 is provided downward at the middle of the bottom of the flow guiding hopper 15. A fixed pipe 17 sleeved on the slag discharge pipe 16 is provided on the bottom wall of the vertical pipe 1. A control valve is provided at the bottom end of the fixed pipe 17. The outlet end of the air inlet pipe 2 extends to one side of the bottom of the flow guiding hopper 15.

[0028] 如 Figure 2 、 3 所 述, a surrounding edge 19 that is in contact with the inner wall of the vertical pipe 1 is provided around the top edge of the filter plate 4. In the first state, the surrounding edge 19 seals the opening of the lower horizontal end of the U-shaped pipe 3. In the second state, the surrounding edge 19 is displaced between the upper and lower horizontal ends of the U-shaped pipe 3.

[0029] The usage method of the present invention: The working principle in the first state: As shown in Figure 2As shown in the figure, the intake pipe 2 introduces the waste gas generated by the kiln into the vertical pipe 1. Among them, the waste gas flow is guided by the diversion hopper 15 to different areas around the inside of the vertical pipe 1. Then, the waste gas is filtered through the pores on the filter plate 4 and flows out through the top opening of the vertical pipe 1, so as to achieve the purpose of filtering impurities in the waste gas. In the above process, the diversion hopper 15 guides and distributes the gas to prevent it from flowing only to a certain specific position in the filter plate 4, which affects the filtering efficiency of the filter plate 4 for the gas, or to prevent it from flowing only to a certain specific position in the filter plate 4, which causes the position of the filter plate 4 to be quickly blocked. At the same time, the perimeter prevents the gas flowing upward from the bottom in the vertical pipe 1 from entering the C-shaped pipe 3 for flow.

[0030] Working principle in the second state: As Figure 3 shown in the figure, when impurities accumulate after the filter plate 4 filters the gas for a long time, at this time, the accumulated impurities at the bottom of the filter plate 4 will affect the gas flow. Then, the pressure generated by the gas on the filter plate 4 increases. Under the blowing and extrusion of the gas, the filter plate 4 moves upward in the vertical pipe 1. At this time, it will simultaneously drive the perimeter 19 and the filter net 5 to move. Finally, when the perimeter 19 gradually opens the horizontal end opening below the C-shaped pipe 3, the filter net 5 gradually seals the horizontal end opening below the C-shaped pipe 3. And when the filter plate 4 moves, it will drive the sleeve 6 to move upward in the through hole on the mounting plate 7 and compress the spring 8. Among them, the sleeve 6 drives the round rod 9 to move through the bearing, and the round rod 9 will drive the diversion hopper 15 to drive the slag discharge pipe 16 to move upward in the fixed pipe 17. And the round rod 9 also drives the annular seat 11 and the push plate 13 to move upward through the cross bar 12 and be opposite to the horizontal end opening above the C-shaped pipe 3. Finally, as Figure 3As shown in the figure, at this time, the gas below the filter plate 4 can enter the U-shaped pipe 3 through the pores of the filter net 5. The gas is filtered by the filter net 5. When the filtered gas is ejected from the horizontal end of the U-shaped pipe 3, it can blow the push plate 13 and drive the round rod 9 to rotate on the bearing through the annular seat 11 and the cross bar 12. Then, the gas is discharged through the opening at the top of the vertical pipe 1. The rotating round rod 9 will drive the scraper 10 to rotate to scrape and clean the bottom end face of the blocked filter plate 4 at this time. In the above process, only when a large amount of gas is discharged from the horizontal end at the top of the U-shaped pipe 3 can it blow the push plate 13 and drive the round rod 9 to rotate in the bearing and the sleeve 6 through components such as the annular seat 11. At the same time, a large amount of the scraped impurities fall into the opening of the diversion hopper 15, and finally, the impurities falling into the opening of the diversion hopper 15 can be discharged through the opened fixed pipe 17 and the slag discharge pipe 16. At this time, due to the influence of the diversion hopper 15 guiding the air flow to the filter net 5 and being discharged from the U-shaped pipe 3, the air flow will not act on the inside of the diversion hopper 15 in a large amount to blow up the impurities inside. As the impurities on the bottom end face of the filter plate 4 are cleaned, the resistance of the filter plate 4 to the air flow slowly decreases. At this time, under the pushing force of the spring 8, the filter plate 4 slowly resets and directly or indirectly drives components such as the filter net 5, the surrounding edge 19, the annular seat 11, and the push plate 13 to reset. Finally, as Figure 2 shown in the figure. Then, when the filter plate 4 is blocked again, the above steps are repeated.

[0031] The above has described the present invention in detail, but the described content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An environmentally friendly dust removal device for industrial kilns, characterized by: It includes a vertical pipe with a bottom seal. An air inlet pipe is arranged on one side of the bottom of the vertical pipe. A U-shaped pipe communicated with it is arranged on the upper half wall of the vertical pipe. A filter plate is also arranged in the vertical pipe. A filter net is arranged in a circle around the bottom edge of the filter plate. A sleeve with a polygonal cross-section is also arranged in the middle of the filter plate. An installation plate for the top end of the sleeve to pass through is arranged in the vertical pipe. A spring is sleeved on the sleeve below the installation plate. A round rod is fixed in the sleeve through a bearing. An L-shaped scraper that abuts against the bottom end face of the filter plate and the inner side wall of the filter net is arranged at the bottom end of the round rod. A ring seat is arranged at the top end of the round rod. A cross bar connected to the top end of the round rod is arranged in the ring seat. Multiple groups of push plates are arranged radially on the outer wall of the ring seat; In the first state, the filter plate and the filter net are located below the U-shaped pipe. The ring seat and the push plates are located between the upper and lower horizontal ends of the U-shaped pipe. The gas introduced by the air inlet pipe is filtered by the filter plate and then discharged from the vertical pipe; In the second state, the filter plate is located between the upper and lower horizontal ends of the U-shaped pipe. The filter net seals the opening of the lower horizontal end of the U-shaped pipe. The ring seat and the push plates are facing the opening of the upper horizontal end of the U-shaped pipe. The gas introduced by the air inlet pipe is filtered by the filter net and then discharged from the upper horizontal end of the U-shaped pipe. The gas discharged from the U-shaped pipe blows the push plates and the ring seat to drive the round rod to rotate through the cross bar. The round rod rotates and drives the scraper to clean the filtering end faces of the filter plate and the filter net.

2. The environmentally friendly dust removal equipment for an industrial kiln according to claim 1, characterized in that: A sewage discharge pipe is arranged at the bottom of the vertical pipe. A manhole is also arranged at the bottom of the side wall of the vertical pipe.

3. The environmentally friendly dust removal equipment for an industrial kiln according to claim 1, characterized in that: A horn-shaped flow guide hopper with an upward opening is arranged at the inner bottom of the vertical pipe. The bottom end of the round rod is fixedly connected to the inner wall of the flow guide hopper. A slag discharge pipe is arranged downward in the middle of the bottom of the flow guide hopper. A fixed pipe sleeved on the slag discharge pipe is arranged on the bottom wall of the vertical pipe. A control valve is arranged at the bottom end of the fixed pipe. The outlet end of the air inlet pipe extends to one side of the bottom of the flow guide hopper.

4. The environmentally friendly dust removal equipment for an industrial kiln according to claim 1, characterized in that: A polygonal through hole for the sleeve to pass through is arranged at the end of the installation plate. The size of the sleeve is adapted to the size of the through hole. A limiting strip located above the installation plate is arranged in a circle around the top end of the sleeve.

5. The environmentally friendly dust removal equipment for an industrial kiln according to claim 1, characterized in that: A surrounding edge that abuts against the inner wall of the vertical pipe is arranged in a circle around the top edge of the filter plate. In the first state, the surrounding edge seals the opening of the lower horizontal end of the U-shaped pipe. In the second state, the surrounding edge is displaced between the upper and lower horizontal ends of the U-shaped pipe.

6. The environmentally friendly dust removal equipment for an industrial kiln according to claim 1, characterized in that: The number of the U-shaped pipes is two groups. The two groups of U-shaped pipes are respectively located on both sides of the vertical pipe. The upper horizontal ends of the two groups of U-shaped pipes are respectively tangent to the corresponding front and rear side walls of the vertical pipe.

Images