A chemical reactor waste gas treatment device

Abstract

The present invention relates to a waste gas treatment device for a chemical reactor, and belongs to the technical field of waste gas treatment for reactors. The present invention includes a shell, a filter mechanism, a spray part and a cleaning brush. The shell is provided with an air inlet and an air outlet. The filter mechanism includes a frame, a sleeve, multiple groups of elastic plate assemblies and an annular screen. The frame is fixedly installed in the inner cavity of the shell. The frame includes an annular grid, a top plate and a bottom plate. The sleeve can be rotatably installed in the inner cavity of the frame. Multiple groups of elastic plate assemblies are connected to the sleeve. The elastic plate assembly includes a mounting plate, a partition and an arc-shaped elastic telescopic rod. The annular screen is located between the multiple groups of elastic plates and the annular grid. The annular screen includes multiple V-shaped nets connected end to end. The outer end of the partition is fixedly connected to the annular screen. The spray part and the cleaning brush are both located outside the annular grid. The air inlet, the spray part and the cleaning brush are arranged in sequence along the rotation direction of the sleeve. When the present invention is used, the waste gas discharge process does not need to be interrupted, and the waste gas discharge efficiency will not be affected.

Description

Technical Field

[0001] The invention relates to the technical field of reactor waste gas treatment, and in particular to a chemical reactor waste gas treatment device. Background Art

[0002] In the production process of the chemical industry, the reactor is a type of container used for physical or chemical reactions. It is widely used in the fields of petroleum, chemical industry, rubber, pesticide, dye, medicine and food. It is a pressure vessel used to complete processes such as sulfidation, nitration, hydrogenation, hydrocarbonization, polymerization and condensation. During chemical production, a large amount of waste gas containing nitrate and sulfur is often generated. The waste gas generated during the operation of the reactor needs to be treated before it can flow into the air, reducing air pollution and making production more environmentally friendly.

[0003] In the prior art, the waste gas generated by the reactor is generally treated by a waste gas treatment device, such as a chemical reactor waste gas treatment device disclosed in the patent with authorization announcement number CN117018776B, which includes a filter cartridge, and a plurality of plug discs are axially slidably connected to the filter cartridge, and the plurality of plug discs divide the inner cavity of the filter cartridge into a clean cavity, a purified flow cavity and a waste gas cavity. A filter plate is arranged on the disk surface of the plug disc, and an axially elastic telescopic support frame is connected between adjacent plug discs. One end of the filter cartridge is axially slidably connected to a drive shaft, and one end of the drive shaft is connected to the relative plug disc through an axially elastic telescopic support frame.

[0004] The device provides a filter cartridge, a plurality of plug discs, a plurality of elastic connecting frames and a filter plate, so that the exhaust gas filtration has the function of pressurized filtration, greatly reduces the content of harmful substances in the exhaust gas, and also increases the flow rate of the exhaust gas filtration.

[0005] However, when the device is in use, if a large amount of harmful impurities accumulate on the filter plate, the device needs to be shut down and the filter plate needs to be removed from the plug disc for cleaning. The exhaust process needs to be interrupted when the device is shut down. Removing the filter plate is troublesome and time-consuming, so the exhaust interruption time is also long, which will lead to a decrease in the exhaust gas emission efficiency. Summary of the invention

[0006] The present invention provides a chemical reactor waste gas treatment device to solve the technical problems in the prior art that when cleaning the filter plate in the reactor waste gas treatment device, the equipment needs to be shut down and the filter plate needs to be disassembled, resulting in a long waste gas emission interruption time and reduced emission efficiency.

[0007] In order to solve the above problems, the present invention provides a chemical reactor waste gas treatment device adopts the following technical solutions:

[0008] A waste gas treatment device for a chemical reactor, comprising a shell, an air inlet and an air outlet are provided on the shell, a filtering mechanism is provided in the inner cavity of the shell, the filtering mechanism comprises a frame, a sleeve, a plurality of elastic plate assemblies and an annular screen; the frame is fixedly installed in the inner cavity of the shell, the frame comprises an annular grid with an axis extending vertically and a top plate and a bottom plate respectively fixed to the upper and lower sides of the annular grid; the sleeve is coaxial with the annular grid and rotatably installed in the inner cavity of the frame; the plurality of elastic plate assemblies are all connected to the sleeve and are evenly distributed along the circumference of the sleeve, the elastic plate assembly comprises a mounting plate fixedly connected to the sleeve, a partition located at the front side of the mounting plate in the rotation direction, and an arc-shaped elastic telescopic rod connected between the mounting plate and the partition and coaxial with the sleeve; the annular screen is coaxial with the sleeve and is located between the plurality of elastic plates and the annular grid, the annular screen comprises a plurality of V-shaped nets connected end to end and can be telescopically folded, and the outer end of the partition is connected to the annular screen;

[0009] A spray component and a cleaning brush are also provided in the shell, and the spray component and the cleaning brush are both located on the outside of the annular grid, and the air inlet, the spray component and the cleaning brush are arranged sequentially along the rotation direction of the sleeve; a limit block that can elastically slide up and down is provided on the side wall of the inner cavity of the top plate and / or the bottom plate facing the frame, and the limit block is located between the spray component and the cleaning brush, and the limit block and the partition block mutually stop each other on the rotation path of the partition, and when the partition rotates to the limit block, it is blocked and the partition adjacent to the rear side of the rotation direction of the partition moves closer to each other, so that the area of ​​the annular screen opposite to the spray component is folded, and when the partition passes the limit block, the folded area of ​​the annular screen elastically unfolds.

[0010] By adopting the above technical solution, when working, the annular screen between the two partitions in the two adjacent groups of elastic plate assemblies is made to face the air inlet, and the exhaust gas entering from the air inlet is blown onto this part of the annular screen, and the impurities in the exhaust gas remain on the outer surface of this part of the annular screen. When a large amount of impurities are accumulated on this part of the annular screen, the sleeve rotates and drives the annular screen plate to rotate, so that this part of the annular screen plate leaves the air inlet and moves to the spray part. The other part of the annular screen located on the rear side of this part of the annular screen rotates to face the air inlet to continue filtering the exhaust gas. During the switching process, the exhaust gas treatment device is always in working condition, and the exhaust gas emission process can continue without affecting the exhaust gas emission efficiency.

[0011] The spraying member sprays a small amount of water toward the portion of the annular screen on which impurities are accumulated, so that the impurities on the portion of the annular screen become wet, and then the portion of the annular screen continues to rotate forward with the sleeve, and when the partition on the front side of the portion of the annular screen moves to the limit block, it is blocked by the limit block and cannot continue to rotate with the sleeve, thereby compressing the arc-shaped elastic telescopic rod on the rear side, so that the two partitions on the front and rear sides of the portion of the annular screen are close to each other, thereby folding the portion of the annular screen, and the wet impurities are squeezed and become denser, and when the arc-shaped elastic telescopic rod is compressed to a certain extent, the blocked partition passes over the limit block, and then the arc-shaped elastic telescopic rod releases the elastic force, pushing the partition on the front side to move forward, thereby unfolding the folded annular screen, and during the unfolding process, the densely compressed impurities are pushed by the annular screen in the deformed state and fall off the annular screen, and at the same time, the cleaning brush brushes off the impurities adhering to the outside of the portion of the annular screen, thereby cleaning the annular screen, and the cleaning process is automatically carried out without affecting the continued filtering and emission of exhaust gas. Wetting the impurities and squeezing them into lumps before flicking them off can also avoid dust being generated when the impurities are flicked off.

[0012] Here, the impurities are first moistened and then squeezed, and then pushed off by the deformation of the annular screen during the expansion process, thereby cleaning the annular screen. Compared with directly using water flow to impact the outer wall of the annular screen to clean the annular screen, the annular screen will not be impacted by water flow for a long time, resulting in less wear and a longer service life.

[0013] Furthermore, multiple groups of elastic plate assemblies are arranged end to end on the outside of the sleeve, and the arc-shaped elastic telescopic rods in any two adjacent groups of elastic plate assemblies are staggered up and down. The partitions in each group of elastic plate assemblies are provided with avoidance holes for avoiding the mounting plates in another group of elastic plate assemblies located in front of the group of elastic plate assemblies in the rotation direction.

[0014] By adopting the above technical solution, multiple groups of elastic plate assemblies are connected end to end so that there is no gap between two adjacent groups of elastic plate assemblies. In this way, when the partition is blocked by the limit block, the partition can move to a position closer to another partition located behind it. In this way, the annular screen is squeezed to a greater extent, which is more conducive to compacting the wet impurities.

[0015] Furthermore, the V-shaped net includes two filter sheets hinged to each other with a hinge axis extending vertically, and multiple V-shaped nets are hinged end to end to form an annular screen, and the hinge axis between any two adjacent V-shaped nets extends vertically. A first hinge axis is provided between the two filter sheets in the V-shaped net, and a second hinge axis is provided between any two adjacent V-shaped nets.

[0016] By adopting the above technical solution, the annular screen is formed by hingedly connecting multiple groups of V-shaped nets, and the V-shaped net is formed by hingedly connecting filter screens. The hinged connection can improve the connection strength at the connection position, so that the connection position can be flipped multiple times to avoid breakage at the connection position.

[0017] Furthermore, the cleaning brush extends vertically, and the cleaning brush is slidably assembled on the frame around the axis of the sleeve, and an arc-shaped opening is provided on the bottom side wall of the shell, which is directly opposite to the active area of ​​the cleaning brush.

[0018] By adopting the above technical solution, the cleaning brush is slidably assembled on the frame, and the cleaning brush can slide back and forth, thereby effectively cleaning the unfolded annular screen.

[0019] Furthermore, the spraying member includes an arc-shaped plate fixedly connected to the shell and coaxial with the sleeve, and a plurality of spray heads arranged in an array and mounted on the inner side wall of the arc-shaped plate.

[0020] Furthermore, an air outlet channel is provided on one side of the top plate near the air inlet, the air outlet channel is connected to the inner cavity of the frame, and the top of the air outlet channel extends to the air outlet; two baffles are connected between the shell and the annular grid, and the two baffles are distributed at both ends of the air inlet along the circumference of the annular grid, and an independent air intake space is formed between the two baffles and the air intake pipe.

[0021] By adopting the above technical solution, the exhaust gas is blown from the air intake space to the screen, filtered through the annular screen and then discharged to the outlet through the air outlet channel, so that the incoming exhaust gas is filtered only by the part of the annular screen directly opposite to the air inlet, thereby preventing the exhaust gas from entering the shell and being blown onto all the outer surfaces of the annular screen, causing impurities on all surfaces of the annular screen.

[0022] Furthermore, a filter plate is provided at the air outlet.

[0023] By adopting the above technical solution, the exhaust gas is filtered twice, and the exhausted gas is cleaner.

[0024] Furthermore, a first magnetic block is provided at the top and / or bottom end of the first hinge shaft, and a second magnetic block is provided at the top and / or bottom end of the second hinge shaft, and the magnetism of the inward end of the first magnetic block is opposite to that of the second magnetic block; a magnetic body is provided on the side wall of the inner cavity of the bottom plate and / or top plate facing the frame, and the magnetic body is elastically and movably connected to the corresponding bottom plate or top plate up and down and protrudes from the corresponding top plate or bottom plate toward the inner cavity of the frame, and the magnetic body is arranged at the front side of the limit block along the rotation direction of the sleeve, and the end of the magnetic body located at the rear side along the rotation direction of the sleeve is provided with an inclined surface for the partition to push, the upper half of the magnetic body and the outward end of the lower half have opposite magnetism, and the outward end of the half of the magnetic body close to the inner cavity of the frame has the same magnetism as the inward end of the first magnetic block.

[0025] By adopting the above technical solution, when the partition is elastically released to drive the squeezed part of the annular screen to expand, the partition is pushed onto the magnetic block, pressing the half of the magnetic block facing away from the inner cavity of the frame into the top plate or the bottom plate, and the other half that is exposed has the same magnetic properties as the first magnetic block, and will repel the first magnetic block, causing the first magnetic block to move outward, while attracting the second magnetic block, causing the second magnetic block to move inward, thereby flipping the V-shaped mesh that originally opened outward to a state where the opening is inward, and converting the inner corners of the V-shaped mesh that are prone to accumulate impurities into a state that bulges outward, making it easier to be cleaned by a cleaning brush, so that the annular screen is cleaned more cleanly.

[0026] The beneficial effect of the waste gas treatment device of a chemical reactor provided by the present invention is that the process of cleaning the screen is automatically carried out, and the cleaning efficiency is higher. The process of cleaning the annular screen and the process of filtering and discharging the waste gas can be carried out simultaneously. When cleaning the annular filter, the waste gas treatment device does not need to be shut down, and the waste gas can be continuously filtered and discharged, and the waste gas discharge efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0028] Figure 1 A schematic diagram of a chemical reactor waste gas treatment device provided by the present invention Figure 1 ;

[0029] Figure 2 A schematic structural diagram of a cylindrical top shell in a chemical reactor waste gas treatment device provided by the present invention;

[0030] Figure 3 A top view of a cylindrical top shell in a chemical reactor waste gas treatment device provided by the present invention;

[0031] Figure 4 A schematic diagram of the structure of a waste gas treatment device for a chemical reactor provided by the present invention without the cylindrical top shell;

[0032] Figure 5 for Figure 4 A schematic diagram of the structure enlargement at the center A;

[0033] Figure 6 A schematic diagram of the structure of a chemical reactor waste gas treatment device provided by the present invention without the cylindrical top shell and the filtering mechanism;

[0034] Figure 7 A schematic diagram of a chemical reactor waste gas treatment device provided by the present invention Figure 2;

[0035] Figure 8 A schematic structural diagram of a sleeve and multiple sets of elastic plate assemblies in a chemical reactor waste gas treatment device provided by the present invention;

[0036] Fig. 9 A schematic diagram of a chemical reactor waste gas treatment device provided by the present invention Figure 3 ;

[0037] Fig.10 for Fig. 9 A schematic diagram of the structure enlarged at B in the middle;

[0038] Fig.11 A schematic structural diagram of a frame in a chemical reactor waste gas treatment device provided by the present invention;

[0039] Fig.12 A schematic diagram of the relative position relationship between a magnetic body, a first magnetic block, and a second magnetic block in a chemical reactor waste gas treatment device provided by the present invention when the V-shaped opening in the V-shaped net faces outward;

[0040] Fig.13 A schematic diagram of the relative positional relationship between a magnetic body, a first magnetic block and a second magnetic block in a chemical reactor waste gas treatment device provided by the present invention when the V-shaped opening in the V-shaped net faces inward.

[0041] Description of reference numerals:

[0042] 1. Shell; 101. Cylindrical top shell; 102. Base; 103. Air outlet duct; 104. Air inlet duct; 105. Air inlet; 106. Arc-shaped opening; 2. Filter plate; 3. Air outlet channel; 4. Top plate; 401. Arc-shaped slide; 5. Ring grid; 6. Bottom plate; 7. Cleaning brush; 8. Baffle; 9. Arc-shaped plate; 10. Nozzle; 11. Drive shaft; 12. Drive motor; 13. Partition; 131. Avoidance hole; 14. Mounting plate; 15. Sleeve; 16. Magnetic body; 17. Slider; 18. Limit block; 19. Arc-shaped elastic telescopic rod; 20. First elastic member; 21. Arc-shaped limit plate; 22. Filter screen; 23. First magnetic block; 24. Second magnetic block; 25. First hinge axis; 26. Second hinge axis; 27. Movable axis. DETAILED DESCRIPTION

[0043] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] The following is an embodiment of a chemical reactor waste gas treatment device provided by the present invention:

[0045] like Figure 1-Figure 13 As shown, a chemical reactor waste gas treatment device includes a shell 1, a filtering mechanism, a spraying member, a cleaning brush 7, a limit block 18 and a magnetic body 16.

[0046] like Figure 1 As shown, the housing 1 is arranged on a horizontal ground, and the housing 1 includes a base 102 , a cylindrical top shell 101 , an air inlet duct 104 and an air outlet duct 103 .

[0047] like Figure 1-Figure 3 As shown, the base 102 is disc-shaped, the cylindrical top shell 101 is coaxially connected to the top surface of the base 102, and the space between the cylindrical top shell 101 and the base 102 is the inner cavity of the housing 1. An air inlet 105 is provided on the circumferential side wall of the cylindrical top shell 101, and an air inlet pipe 104 is connected to the cylindrical top shell 101 opposite to the air inlet 105. An air outlet is provided on the top side wall of the cylindrical top shell 101 near the air inlet 105, and a filter plate 2 is installed at the air outlet. The air outlet pipe 103 is connected to the top side wall of the cylindrical top shell 101 opposite to the air outlet.

[0048] like Figure 4 , Figure 7-Figure 9 As shown, the filter mechanism is arranged in the inner cavity of the housing 1, and the filter mechanism includes a frame, a driving member, a sleeve 15, an elastic plate assembly and an annular screen.

[0049] like Figure 7 , Fig. 9 , Fig.11 As shown, the frame includes an annular grid frame 5, a top plate 4 and a bottom plate 6. The annular grid frame 5 is coaxial with the cylindrical top shell 101. The top plate 4 and the bottom plate 6 are both disc-shaped. The top plate 4 and the bottom plate 6 are coaxial with the annular grid frame 5 and are respectively fixed to the upper and lower sides of the annular grid frame 5. The circumferential outer side walls of the top plate 4 and the bottom plate 6 protrude outward from the annular grid frame 5. The space between the top plate 4, the bottom plate 6 and the annular grid frame 5 is the inner cavity of the frame. The bottom plate 6 is fixedly connected to the base 102 so that the frame is fixed in the inner cavity of the shell 1. A vertically extending air outlet channel 3 is connected to one side of the top surface of the top plate 4 near the air inlet 105. The air outlet channel 3 is connected to the inner cavity of the frame. The air outlet channel 3 is directly opposite to the air outlet up and down and the top end extends to fit with the top inner wall of the cylindrical top shell 101.

[0050] like Figure 7As shown, the driving member includes a driving motor 12 and a driving shaft 11. The driving motor 12 is installed in the middle of the base 102, and the output shaft end of the driving motor 12 is set upward. The driving shaft 11 is connected to the output shaft end of the driving motor 12 through a coupling. The driving shaft 11 is coaxial with the annular grid 5. The driving shaft 11 passes through the bottom plate 6 and extends into the inner cavity of the frame. The top end of the driving shaft 11 is rotatably mounted on the top plate 4.

[0051] The sleeve 15 is coaxially sleeved on the outside of the drive shaft 11 and is fixedly connected to the drive shaft 11, so that the sleeve 15 is driven to rotate synchronously when the drive shaft 11 rotates, and the top and bottom surfaces of the sleeve 15 are respectively in contact with the bottom surface of the top plate 4 and the top surface of the bottom plate 6. During operation, the sleeve 15 rotates clockwise in a top view.

[0052] like Figure 8 , Fig. 9 As shown, four groups of elastic plate assemblies are provided, and the four groups of elastic plate assemblies are evenly distributed around the sleeve 15 and the groups of elastic plate assemblies are connected end to end.

[0053] The elastic plate assembly includes a mounting plate 14 , a partition plate 13 and an arc-shaped elastic telescopic rod 19 .

[0054] For the convenience of describing the subsequent structures, it is defined that in the circumferential direction of the sleeve 15, the side lagging behind along the rotation direction of the sleeve 15 is the rear side, and the leading side is the front side.

[0055] like Figure 7 , Figure 8 As shown, the mounting plate 14 extends vertically and is fixedly connected to the outer wall of the sleeve 15, the partition 13 extends vertically and is located on the front side of the mounting plate 14, the partition 13 is not connected to the sleeve 15, and a gap is provided between the top end of the partition 13 and the top plate 4, and a gap is provided between the bottom end and the bottom plate 6 to reduce the friction during rotation.

[0056] The arc-shaped elastic telescopic rod 19 is coaxial with the sleeve 15 and connected between the partition 13 and the mounting plate 14. When the arc-shaped elastic telescopic rod 19 is at its original length, a 90-degree angle is formed between the partition 13 and the mounting plate 14. A first elastic member 20 is sleeved on the outer side of the arc-shaped elastic telescopic rod 19. The first elastic member 20 is a compression spring. One end of the first elastic member 20 is fixedly connected to the partition 13, and the other end abuts against the mounting plate 14. The first elastic member 20 enables the partition 13 to have a greater elastic force when it is released and popped up, so that the partition 13 can be bounced to a state where the angle between the partition 13 and the mounting plate 14 is greater than 90 degrees.

[0057] The two arc-shaped elastic telescopic rods 19 in any two adjacent sets of elastic plate assemblies are staggered up and down. Each partition 13 is provided with an avoidance hole 131 for avoiding the mounting plate 14 in the elastic plate assembly located on the front side of the partition 13. When the arc-shaped elastic telescopic rods 19 in each set of elastic plate assemblies are in the original length state, any two adjacent sets of elastic plate assemblies are connected end to end, that is, each mounting plate 14 is arranged in the avoidance hole 131 on the partition 13 in the elastic plate assembly located on the rear side thereof.

[0058] like Fig. 9 As shown, the annular screen is coaxially arranged in the inner cavity of the frame with the annular grid frame 5, and the annular screen is located outside each group of elastic plate components, and the space between the annular screen, the top plate 4, the bottom plate 6 and the sleeve 15 is the filtering inner cavity.

[0059] like Fig. 9 , Fig.10 As shown, the annular screen includes a plurality of V-shaped nets connected end to end, and the V-shaped opening of the V-shaped net faces outward. The V-shaped net includes two vertically extending filter sheets 22, and the two filter sheets 22 extend vertically and are hinged to each other, and a vertically extending first hinge axis 25 is provided at the hinge position. Any two adjacent V-shaped nets are hingedly connected, and a vertically extending second hinge axis 26 is provided at the hinge position. When the annular screen is subjected to circumferential extrusion force, the two adjacent V-shaped nets rotate around the second hinge axis 26 and approach each other, and the two filter sheets 22 in each V-shaped net rotate around the first hinge axis 25 and approach each other, thereby realizing the folding of the annular screen in the circumferential direction.

[0060] The outer ends of the four partitions 13 in the above four sets of elastic plate assemblies are respectively hinged on four circumferentially evenly distributed second hinge shafts 26 in the annular screen. The four partitions 13 divide the annular screen into four arc-shaped screen segments and divide the filter cavity into four filter cavity segments. During operation, the sleeve 15 drives the annular screen to rotate intermittently, so that each screen segment is sequentially facing the air inlet 105 to filter the exhaust gas. The exhaust gas filtered by the screen segment enters the filter cavity segment and is discharged to the outlet through the outlet channel 3, and is discharged from the outlet pipe 103 after passing through the filter plate 2 at the outlet.

[0061] like Figure 4 , Figure 6As shown, in order to prevent the exhaust gas entering from the air inlet 105 from entering the gap between the annular grid frame 5 and the inner wall of the cylindrical top shell 101 in large quantities and contacting other screen segments that are not directly facing the air inlet 105, a baffle 8 is provided on each of the front and rear sides of the air inlet 105. The baffle 8 is connected between the annular grid frame 5 and the inner wall of the cylindrical top shell 101, and a 90-degree angle is formed between the two baffles 8. An independent air intake space is formed between the two baffles 8 and the air inlet pipe 104, and the air intake space allows most of the exhaust gas input from the air inlet pipe 104 to be blown only to the screen segment directly facing the air inlet 105.

[0062] like Figure 6 , Fig. 9 As shown, the spraying member is installed between the annular grid 5 and the inner wall of the cylindrical top shell 101, and is located at the rear side of the air inlet 105. The spraying member includes an arc plate 9 and a plurality of spray heads 10. The arc plate 9 is coaxial with the sleeve 15 and is fixedly connected to the base 102. The central angle of the arc plate 9 is 90 degrees. The plurality of spray heads 10 are arranged in an array and installed on the inner side wall of the arc plate 9. The nozzles in the spray heads 10 are all facing the corresponding screen segments.

[0063] When a lot of impurities are accumulated on the screen segment facing the air inlet 105 and need to be cleaned, the sleeve 15 rotates to drive the screen segment to move to the spraying part, and the spraying part sprays an appropriate amount of water on the screen segment to moisten the impurities on the screen segment. During the conversion process, another screen segment located behind the screen segment that does not participate in the filtration rotates to the position facing the air inlet 105 to continue filtering the exhaust gas, so that the exhaust gas can be always in the discharge state.

[0064] like Figure 7 , Fig. 9 , Fig.11 As shown, the cleaning brush 7 is located at the front side of the spraying member, and the cleaning brush 7 is a vertically extending cylindrical structure. A movable shaft 27 is coaxially fixedly connected to the top of the cleaning brush 7, and a gear is fixedly sleeved outside the movable shaft 27. The top plate 4 is provided with an arc-shaped chute 401 coaxial with the sleeve 15 and having a central angle of 90 degrees. The arc-shaped chute 401 is located at the front side of the spraying part. The slider 17 is inserted into the arc-shaped chute 401 for guiding sliding. The slider 17 is connected with a motor. The movable shaft 27 is rotatably mounted on the slider 17 and fixed at the upper and lower positions on the slider 17. The motor is connected to the movable shaft 27 to drive the movable shaft 27 to rotate. The top plate 4 is also provided with an arc-shaped rack coaxial with and corresponding to the arc-shaped chute 401. The arc-shaped rack is meshed with the gear on the movable shaft 27. When the motor drives the movable shaft 27 to rotate, it drives the gear to rotate, so that the gear rolls along the arc-shaped rack, and finally the cleaning brush 7 can both rotate and slide back and forth along the arc-shaped chute 401, which has a better cleaning effect on the annular screen. The gear, rack, motor and other structures here are not shown in the figure.

[0065] like Figure 4, Figure 6 As shown, the base 102 is provided with an arc-shaped opening 106 which is vertically opposite to the active area of ​​the cleaning brush 7 , and the arc-shaped opening 106 is used for discharging impurities dropped by the cleaning brush 7 .

[0066] like Fig. 9 , Fig.11 As shown, two limit blocks 18 are symmetrically arranged in the upper and lower parts, and the two limit blocks 18 are respectively connected to the top plate 4 and the bottom plate 6. The limit blocks 18 are slidably assembled on the corresponding top plate 4 or the bottom plate 6 along the up and down directions, and a second elastic member that can elastically stretch up and down is connected between the corresponding top plate 4 or the bottom plate 6, and the second elastic member is a compression spring. The second elastic member makes the limit blocks 18 protrude from the corresponding top plate 4 or the bottom plate 6 toward the inner cavity of the frame, and the part of the limit blocks 18 protruding from the corresponding top plate 4 or the bottom plate 6 is hemispherical.

[0067] like Fig. 9 As shown, the limit block 18 is located at the front side of the above-mentioned spray part and at the rear side of the active area of ​​the cleaning brush 7. After being sprayed by the spray part, the screen segment with accumulated impurities continues to rotate with the sleeve 15. When the partition 13 located at the front side of the screen segment rotates to the limit block 18, it is blocked by the limit block 18, and the arc-shaped elastic telescopic rod 19 connected to the rear side of the partition 13 is squeezed, and the partition 13 located at the rear side of the screen segment continues to rotate forward, so that the two partitions 13 on the front and rear sides of the screen segment are close to each other, and the screen segment is squeezed and folded, so that the wet impurities adhering to the outer wall of the screen segment are squeezed more densely.

[0068] like Fig. 9 As shown, in order to prevent the screen segment from being unable to be folded along the circumferential direction when squeezed and becoming concave toward the sleeve 15, an arc-shaped limit plate 21 opposite to the inside and outside of the spray piece is provided on the base 102. The arc-shaped limit plate 21 cooperates with the annular grid 5 to guide the screen segment to prevent the screen segment from deviating during the folding process.

[0069] As the sleeve 15 continues to rotate, the partition 13 blocked by the limit block 18 will eventually move over the limit block 18 to the front side of the limit block 18, and move back to the corresponding mounting plate 14 under the action of the elastic force released by the compressed arc-shaped elastic telescopic rod 19, thereby pulling apart the squeezed and folded screen segment, flattening the V-shaped net in the screen segment, and the impurities that have been squeezed and become dense are separated from the V-shaped net during the deformation process of the V-shaped net. When the screen segment is pulled apart, it passes through the area where the cleaning brush 7 is located, and the cleaning brush 7 can brush off the impurities on the outer side wall of the pulled apart screen segment, so that the screen segment is cleaned more cleanly.

[0070] like Figure 7 , Fig. 9As shown, there are two magnetic bodies 16, which are fan-shaped and coaxial with the sleeve 15, and the magnetic bodies 16 are located on the inner side of the annular screen. The two magnetic bodies 16 are respectively mounted on the top plate 4 and the bottom plate 6 and are arranged symmetrically up and down, and the magnetic bodies 16 are located on the front side of the limit block 18. The magnetic body 16 is slidably assembled on the corresponding top plate 4 or bottom plate 6 along the up and down directions, and a third elastic member that can elastically stretch up and down is connected between the corresponding top plate 4 or bottom plate 6, and the third elastic member is a compression spring. The third elastic member makes the magnetic body 16 completely protrude from the bottom surface of the corresponding top plate 4 or the top surface of the corresponding bottom plate 6. An arc-shaped guide groove is formed between the magnetic body 16 and the annular grid 5 to guide the annular screen to prevent the annular screen from running off during folding or unfolding.

[0071] like Fig. 9 , Fig.12 , Fig.13 As shown, the half of the magnetic body 16 close to the inner cavity of the frame and the outward end of the half of the inner cavity facing away from the frame have opposite magnetic properties. The rear end of the magnetic body 16 is provided with an inclined surface tilted backward in the direction facing away from the inner cavity of the frame, and the inclined surface is used for the partition 13 to push. When the partition 13 that pops up forward over the limit block 18 moves to the top of the magnetic body 16 via the inclined surface, the magnetic body 16 is pushed so that the half of the magnetic body 16 facing away from the inner cavity of the frame is pressed into the corresponding top plate 4 or bottom plate 6, so that only the half of the magnetic body 16 close to the inner cavity of the frame protrudes from the corresponding top plate 4 or bottom plate 6.

[0072] like Figure 5 , Fig.10 , Fig.12 , Fig.13 As shown, the top and bottom ends of the above-mentioned first hinge shaft 25 are connected to the first magnetic block 23, and the top and bottom ends of the second hinge shaft 26 are connected to the second magnetic block 24. The magnetic properties of the inward end of the first magnetic block 23 and the second magnetic block 24 are opposite, and the magnetic properties of the inward end of the first magnetic block 23 are the same as the magnetic properties of the outward end of the half section of the inner cavity of the magnetic body 16 close to the frame.

[0073] In the process of the partition 13 passing over the limit block 18 and popping forward to drive the corresponding screen segment to unfold, since the magnetic body 16 is pushed by the partition 13, only the half section of the magnetic body 16 close to the inner cavity of the frame is exposed, and the magnetic force of the outward end of this half section of the magnetic body 16 is the same as the magnetic force of the inward end of the first magnetic block 23, so it will repel the first magnetic block 23 and attract the second magnetic block 24, so that the V-shaped net in the unfolding screen segment is switched to a state where the V-shaped opening faces inward. At this time, the states of the first magnetic block 23, the second magnetic block 24 and the magnetic body 16 are as follows: Fig.13 As shown, one side of the V-shaped groove in the V-shaped net is convex outward, which is convenient for cleaning by the cleaning brush 7. Impurities stuck in the original concave corners of the V-shaped net can be cleaned, and the cleaning effect is better.

[0074] When the partition 13 continues to rotate forward, since the partition 13 on the rear side of the partition 13 is blocked by the limit block 18, the screen segment that has undergone the concave-convex switching is stretched and expanded again. When the partition 13 passes over the magnetic body 16, the magnetic body 16 is no longer pushed by the partition 13 and bulges upward. The half section of the magnetic body 16 that is away from the inner cavity of the frame protrudes from the corresponding top plate 4 or bottom plate 6. The magnetic body 16 of this half section attracts the first magnetic block 23 and repels the second magnetic block 24, so that the screen segment is restored to the original V-shaped opening of the V-shaped net facing outward. At this time, the states of the first magnetic block 23, the second magnetic block 24 and the magnetic body 16 are as shown in FIG. Fig.12 shown.

[0075] When the present invention is in use, the waste gas generated by the chemical reactor to be treated is inputted through the air inlet pipe 104, and the waste gas is blown onto the screen segment facing the air inlet 105, and then discharged to the air outlet through the air outlet channel 3, and then filtered again by the filter plate 2 and discharged from the air outlet pipe 103. When a large amount of impurities are accumulated on the screen segment facing the air inlet 105, the drive motor 12 drives the sleeve 15 to rotate 90 degrees clockwise, so that the screen segment with a large amount of impurities accumulated moves to the spray part, and the spray part sprays water toward the screen segment to wet the impurities on it, and another screen segment located at the rear side of the screen segment moves to the position facing the air inlet 105 to continue filtering the discharged waste gas.

[0076] After that, the sleeve 15 rotates clockwise 90 degrees again. During the rotation process, the partition 13 on the front side of the screen section that was initially wetted by the spray element is blocked by the stop block 18 and cannot continue to rotate forward. The arc-shaped elastic telescopic rod 19 and the first elastic member 20 between the partition 13 and the corresponding mounting plate 14 are squeezed and compressed, and the partition 13 located on the rear side of the partition 13 rotates forward and gradually approaches the partition 13, so that the screen section wetted by the spray between the two partitions 13 is compressed and folded, and the impurities wetted on the outside of the screen section are squeezed and become dense. When the sleeve 15 is fully rotated 90 degrees, the partition 13 blocked by the stop block 18 passes over the stop block 18, and the partition 13 pops forward during the release of the compressed first elastic member 20 and the arc-shaped elastic telescopic rod 19 and returns to its natural state after popping out. During the ejection process, the partition 13 causes the squeezed screen segment to expand again and expand more flatly. During the expansion process, the squeezed dense impurities fall off the screen segment and are discharged from the arc-shaped opening 106 .

[0077] At the same time, when the partition 13 pops up forward, it will move between the two magnetic bodies 16. Under the action of the magnetic body 16 and the first magnetic block 23 and the second magnetic block 24, the V-shaped net in this section of the screen is switched from concave to convex. The originally concave side of the V-shaped net is folded into a convex state. The cleaning brush 7 cleans the outer surface of the folded V-shaped net to clean up impurities in the dead corners.

[0078] After that, the sleeve 15 rotates clockwise 90 degrees again, and the partition 13 on the front side of the cleaned screen segment continues to rotate forward 90 degrees until it leaves the magnetic body 16. The partition 13 on the rear side is blocked by the limit block 18 and cannot rotate forward, so that the screen segment is pulled flat again. During this process, the magnetic body 16 is no longer pushed by the partition 13 and is reset. Under the action of the reset magnetic body 16 and the first magnetic block 23 and the second magnetic block 24, the screen segment is switched to the initial state again, and the V-shaped net is restored to the initial state with the V-shaped opening facing outward.

[0079] The sleeve 15 continues to rotate 90 degrees in sequence, so that each screen segment rotates between each station in sequence, which can continuously filter the exhaust gas and continuously clean the accumulated impurities.

[0080] The present invention can realize automatic cleaning of the annular screen with higher cleaning efficiency, and the cleaning process and the process of filtering the exhaust gas can be carried out simultaneously. When cleaning the annular filter, there is no need to interrupt the exhaust gas discharge, and the exhaust gas discharge efficiency will not be affected.

[0081] In this embodiment, the top and bottom ends of the first hinge shaft 25 are connected to the first magnetic block 23, the top and bottom ends of the second hinge shaft 26 are connected to the second magnetic block 24, and the top plate 4 and the bottom plate 6 are equipped with a magnetic body 16. In other embodiments, the first magnetic block 23 is not set at the top and bottom ends of the first hinge shaft 25, the second magnetic block 24 is not set at the top and bottom ends of the second hinge shaft 26, and the top plate 4 and the bottom plate 6 are not equipped with a magnetic body 16. At this time, the V-shaped net does not switch between concave and convex during the expansion of the screen segment, and it is difficult for the cleaning brush 7 to brush the impurities in the concave corners of the V-shaped net, and the cleaning effect is poor.

[0082] In this embodiment, a plurality of groups of elastic plate components are arranged end to end on the outer side of the sleeve 15. In other embodiments, a gap is provided between any two adjacent groups of elastic plate components.

Claims

1. A chemical reactor waste gas treatment device, comprising a shell, an air inlet and an air outlet are provided on the shell, and a filtering mechanism is provided in the inner cavity of the shell, characterized in that: The filtering mechanism comprises a frame, a sleeve, a plurality of elastic plate assemblies and an annular screen; the frame is fixedly installed in the inner cavity of the shell, the frame comprises an annular grid with an axis extending vertically and a top plate and a bottom plate respectively fixed to the upper and lower sides of the annular grid; the sleeve is coaxial with the annular grid and can be rotatably installed in the inner cavity of the frame; the plurality of elastic plate assemblies are all connected to the sleeve and are evenly distributed along the circumference of the sleeve, the elastic plate assembly comprises a mounting plate fixed to the sleeve, a partition located at the front side of the mounting plate in the rotation direction, and an arc-shaped elastic telescopic rod connected between the mounting plate and the partition and coaxial with the sleeve; the annular screen is coaxial with the sleeve and is located between the plurality of elastic plates and the annular grid, the annular screen comprises a plurality of V-shaped nets connected end to end and can be telescopically folded, and the outer end of the partition is connected to the annular screen; A spray piece and a cleaning brush are also provided in the shell, and the spray piece and the cleaning brush are both located outside the annular grid, and the air inlet, the spray piece and the cleaning brush are arranged in sequence along the rotation direction of the sleeve; a limit block that can slide elastically up and down is provided on the side wall of the inner cavity of the top plate and / or the bottom plate facing the frame, and the limit block is located between the spray piece and the cleaning brush, and the limit block and the partition block mutually block each other on the rotation path of the partition, and when the partition rotates to the limit block, it is blocked and the partition adjacent to the rear side of the rotation direction of the partition moves closer to each other, so that the area of ​​the annular screen opposite to the spray piece is folded, and when the partition passes over the limit block, the folded area of ​​the annular screen is elastically unfolded; Multiple groups of elastic plate assemblies are arranged end to end on the outer side of the sleeve, and the arc-shaped elastic telescopic rods in any two adjacent groups of elastic plate assemblies are staggered up and down, and the partitions in each group of elastic plate assemblies are provided with avoidance holes for avoiding the mounting plates in another group of elastic plate assemblies located in front of the group of elastic plate assemblies in the rotation direction; The V-shaped net includes two filter sheets hinged to each other and the hinge axis extends vertically. Multiple V-shaped nets are hinged end to end to form an annular screen. The hinge axis between any two adjacent V-shaped nets extends vertically. A first hinge axis is provided between the two filter sheets in the V-shaped net, and a second hinge axis is provided between any two adjacent V-shaped nets. A first magnetic block is provided at the top and / or bottom end of the first hinge shaft, and a second magnetic block is provided at the top and / or bottom end of the second hinge shaft, and the magnetism of the inward end of the first magnetic block is opposite to that of the second magnetic block; a magnetic body is provided on the side wall of the inner cavity of the bottom plate and / or top plate facing the frame, and the magnetic body is elastically and movably connected to the corresponding bottom plate or top plate up and down and protrudes from the corresponding top plate or bottom plate toward the inner cavity of the frame, and the magnetic body is arranged on the front side of the limit block along the rotation direction of the sleeve, and the end of the magnetic body located at the rear side along the rotation direction of the sleeve is provided with an inclined surface for the partition to push, the upper half of the magnetic body and the outward end of the lower half have opposite magnetism, and the outward end of the half of the magnetic body close to the inner cavity of the frame has the same magnetism as the inward end of the first magnetic block.

2. A chemical reactor waste gas treatment device according to claim 1, characterized in that: The cleaning brush extends vertically, and is slidably assembled on the frame around the axis of the sleeve. The bottom side wall of the shell is provided with an arc opening which is vertically opposite to the active area of ​​the cleaning brush.

3. A chemical reactor waste gas treatment device according to claim 1 or 2, characterized in that: The spraying member comprises an arc-shaped plate which is fixedly connected to the shell body and coaxial with the sleeve, and a plurality of spray heads which are arranged in an array and mounted on the inner side wall of the arc-shaped plate.

4. A chemical reactor waste gas treatment device according to claim 1 or 2, characterized in that: An air outlet channel is provided on one side of the top plate near the air inlet, the air outlet channel is connected to the inner cavity of the frame, and the top of the air outlet channel extends to the air outlet; two baffles are connected between the shell and the annular grid, and the two baffles are distributed at both ends of the air inlet along the circumference of the annular grid, and an independent air intake space is formed between the two baffles and the air intake pipe.

5. A chemical reactor waste gas treatment device according to claim 1 or 2, characterized in that: A filter plate is provided at the air outlet.

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