Flue gas treatment equipment and treatment process for incinerator

Abstract

The invention relates to the technical field of flue gas treatment, in particular to flue gas treatment equipment and process for an incinerator, and the flue gas treatment equipment for the incinerator comprises a shell and a dust removal device; the multiple dust removal devices are distributed in the shell in an array mode, and each dust removal device comprises a cathode wire, N first plates, N second plates, a cleaning assembly and an auxiliary assembly. The auxiliary assembly enables the water spraying openings of the two cleaning units corresponding to the first plates to alternately spray water to the surfaces of the first plates, so that water flows in the opposite flowing directions alternately flow through the surfaces of the first plates, and the water flows on the N first plates are the same in direction at the same moment; one part of water alternately flows into the recovery ports of the two cleaning units to be discharged, and the other part of water continuously washes the surface of the second plate after passing through the recovery ports.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas treatment, and particularly to a flue gas treatment device and treatment process for an incinerator. Background Art

[0002] A vertical wet electrostatic precipitator is a new dust removal device used to treat flue gas containing trace dust and fine particles. It is mainly used to remove harmful substances such as dust, acid mist, water droplets, aerosol, odor, and PM2.5 in the gas. It is a commonly used device for treating the flue gas of an incinerator to prevent air dust pollution.

[0003] In the prior art, as disclosed in the Chinese patent with the publication number CN116251678B and the name "vertical wet electrostatic precipitator", the disclosed technical solution records that it includes a plurality of dust collecting electrodes and cathode wires. The dust collecting electrodes are sieve hole tubes (anode tubes) with a plurality of through holes arranged on the tube wall. The sieve hole tubes are arranged up and down, and the cathode wires extend up and down and are arranged at the axis of the sieve hole tubes to form an electric field inside the sieve hole tubes. The flue gas is introduced into the sieve hole tubes from the lower end of the sieve hole tubes, and the dust in the flue gas gathers towards the inner side wall of the sieve hole tubes under the drive of the electric field. A spray head is provided directly above the sieve hole tubes to spray intermittently into the sieve hole tubes to form a water film on the inner wall of the sieve hole tubes, and the dust will be adsorbed by the water film and flow downward along the water film to the collection hopper below the sieve hole tubes. By using wet electrostatic dust removal, spraying water on the dust collecting electrodes (anode tubes) to form a water film can reduce the problem of secondary dust emission and can rely on the water film to promote dust removal. However, in the existing spray assemblies, they are usually arranged at the upper part or the bottom of the anode tubes, and the sprayed water flow is difficult to form a water film on the surface of the anode tubes, and uniform flushing cannot be carried out. Summary of the Invention

[0004] The present invention provides a flue gas treatment device and treatment process for an incinerator to solve the above problems.

[0005] A flue gas treatment device and treatment process for an incinerator of the present invention adopt the following technical solution: A flue gas treatment device and treatment process for an incinerator includes a housing and a dust removal device; an air outlet is provided at the upper end of the housing, and an air inlet is provided at the lower end.

[0006] The dust removal device is arranged between the air outlet and the air inlet; the dust removal device is provided with a plurality of dust removal units, and the dust removal units are arranged in an array in the housing and include a cathode wire, N first plates, N second plates, a cleaning assembly, and an auxiliary assembly; the cathode wire is fixedly arranged in the housing and extends up and down; the N first plates and the N second plates are alternately distributed circumferentially around the cathode wire and are connected end to end to enclose a polygonal anode tube; N is a positive integer greater than 1; the anode tube is fixedly connected to the housing.

[0007] There are multiple cleaning components distributed up and down along the axis of the anode tube; the cleaning components include N cleaning structures distributed circumferentially along the anode tube; each cleaning structure corresponds to a first plate; the cleaning structure includes two cleaning units; the two cleaning units are symmetrically distributed on both sides of the corresponding first plate along the circumferential direction of the anode tube; the cleaning unit includes a water spray port and a recovery port; the water spray port and the recovery port of the same cleaning unit are opened on the same second plate; the water spray ports and the recovery ports of the same cleaning component are at the same height.

[0008] The auxiliary component makes the water spray ports of the two cleaning units corresponding to the first plate spray water on the surface of the first plate alternately, so that the water flows with opposite flow directions flow through the surface of the first plate alternately, and at the same moment, the water flow directions on the N first plates are the same. At the same time, the auxiliary component makes part of the water flowing through the first plate flow into the recovery ports of the two cleaning units alternately and be discharged, so as to discharge part of the dust from the anode tube in time. At the same time, it cooperates with multiple cleaning components distributed up and down to clean the anode tube in sections and discharge the rinsed sewage in time, so as to prevent the sewage from flowing down gradually and accumulating at the lower end of the inner wall of the anode tube and not being discharged in time, which affects the subsequent cleaning effect. The other part of the water continues to scour the surface of the second plate after passing over the recovery port, so as to alternately form a uniform water film flowing in the positive and negative circumferential directions of the anode tube on the inner side wall of the anode tube, so as to prevent dead corners from being formed during cleaning and improve the cleaning effect.

[0009] Further, the recovery port is opened on the second plate and is arranged at the junction of the first plate and the second plate; the water spray port is opened on the second plate and is arranged on one side of the recovery port of the same cleaning unit. A nozzle is arranged inside the water spray port, and the nozzle faces the first plate.

[0010] Further, the number of the first plates and the second plates of each dust removal unit is set to four; the first plates of the anode tubes of adjacent dust removal units that are close to each other overlap; the second plates of the anode tubes of four adjacent dust removal units distributed in a ring enclose a cavity with a rectangular cross-section; the auxiliary component is arranged inside the cavity.

[0011] Further, the auxiliary component includes a matching column, a rotating column, a rotating cylinder, and an adjusting structure; the axis of the matching column is arranged vertically, and the cross-section is rectangular; the matching column is inserted into the cavity, and the side wall of the matching column is fixedly connected to the second plate; a coaxial installation hole is opened at the axis of the matching column; two outer hole groups are opened on each side wall of the matching column; the two outer hole groups respectively correspond to the cleaning units opened on the same second plate of two adjacent cleaning structures; the outer hole group includes a water spray outer hole and a recovery outer hole; the water spray outer hole connects the water spray port and the installation hole; the recovery outer hole connects the recovery port and the installation hole.

[0012] The rotating column is arranged vertically and is rotatably installed in the installation hole; a drain groove with a downward opening is arranged on the lower end surface of the rotating column; an annular water inlet groove with an upward opening is arranged on the upper end surface of the rotating column; the water inlet groove is coaxially arranged outside the drain groove.

[0013] There are two inner hole groups provided between the side wall of the rotating column and the four side walls of the mating column; each inner hole group corresponds to an outer hole group; the inner hole group includes a water spraying inner hole and a recycling inner hole; the water spraying inner hole is arranged radially along the rotating column, and one end close to the axis of the rotating column communicates with the water inlet groove; the recycling inner hole is arranged radially along the rotating column; a recycling pipe is inserted into the recycling inner hole; one end of the recycling pipe close to the axis of the rotating column passes through the water inlet groove and communicates with the drainage groove; in the initial state, the water spraying inner hole of one of the two inner hole groups communicates with the water spraying outer hole of the corresponding outer hole group, and the pipe orifice of the recycling pipe away from the axis of the rotating column is in sealing fit with the hole wall of the mounting hole, and the water spraying inner hole of the other inner hole group is in sealing fit with the hole wall of the mounting hole, and the pipe orifice of the recycling pipe away from the axis of the rotating column communicates with the recycling outer hole of the corresponding outer hole group.

[0014] The rotating cylinder is threadedly sleeved on the upper end of the rotating column; a water inlet branch pipe is provided at the upper end of the rotating cylinder; the lower end of the water inlet branch pipe is in rotational fit with the rotating cylinder, and the upper end is fixed inside the housing; water flows into the rotating cylinder from the water inlet branch pipe and enters the water inlet groove.

[0015] The adjusting structure drives the rotating column to rotate forward and backward around its own axis by a preset angle, so that the water spraying inner hole originally communicating with the water spraying outer hole is rotated to be in sealing fit with the hole wall of the mounting hole, the recycling pipe originally in sealing fit with the hole wall of the mounting hole is rotated to communicate with the corresponding recycling outer hole, the water spraying inner hole originally in sealing fit with the hole wall of the mounting hole is rotated to communicate with the corresponding water spraying outer hole, and the recycling pipe originally communicating with the recycling outer hole is rotated to be in sealing fit with the hole wall of the mounting hole, so as to realize alternating water spraying on the surface of the first plate.

[0016] Furthermore, the adjusting structure includes an adjusting groove, a piston cylinder, a piston plate, and a guiding block; the adjusting groove is in an inverted Y shape and is opened on the inner wall of the water inlet branch pipe; the adjusting groove includes a vertical section and an inclined section; the vertical section extends in the vertical direction; there are two inclined sections, which are in a V shape with the small end facing upward; the vertical section and the two inclined sections communicate with each other.

[0017] The piston cylinder is coaxially arranged inside the rotating cylinder and is fixed to the upper end of the inner wall of the rotating cylinder; the piston plate is slidably installed up and down inside the piston cylinder; a spring is fixedly connected between the piston plate and the rotating cylinder; initially, the piston plate seals the upper end of the rotating cylinder; an inverted L-shaped sliding rod is fixed to the upper end of the piston plate; the vertical section of the sliding rod is fixedly connected with the piston plate, and the horizontal section of the sliding rod is slidably matched with the adjusting groove; initially, the horizontal section of the sliding rod is located at the vertical section of the adjusting groove.

[0018] The lower end of the guiding block is arc-shaped, and an elastic guiding plate is fixed at the upper end; the guiding plate and the guiding block are in the shape of a seesaw; the guiding block is rotatably installed at the junction of the lower groove walls of the two inclined sections; when the guiding plate is in a horizontal state, the distance between the end of the guiding plate and the upper groove wall of the inclined section is smaller than the diameter of the sliding rod; arc-shaped elastic sheets are provided on both sides of the guiding plate close to the inclined section of the adjusting groove; the elastic sheets are arranged between the guiding plate and the lower groove wall of the inclined section of the adjusting groove; the elastic sheets are fixedly connected to the end of the guiding plate; initially, the guiding plate deflects so that both ends of the guiding plate are in an inclined state with one high and one low. In other solutions, the guiding plate can be driven to deflect once initially by an electromagnetic method to ensure that all guiding plates deflect in the same direction initially. When it is necessary to clean the anodic tube, water is intermittently injected into the water inlet branch pipe. When water is injected into the water inlet branch pipe, the water pressure pushes the piston plate to move downward against the elastic force of the spring. The piston plate drives the sliding rod to slide from the vertical section of the adjusting groove to the inclined section. When the sliding rod slides to the guiding plate, it slides along the inclined guiding plate towards the inclined section close to the lower end of the guiding plate, and the sliding rod presses the guiding plate, causing the elastic sheet at the lower end of the guiding plate to abut against the lower groove wall of the inclined section and deform, so that the lower end of the guiding plate abuts against the lower groove wall of the inclined section. When the sliding rod passes over the guiding plate, the elastic sheet resets to drive the lower end of the guiding plate to move upward.

[0019] After the sliding rod passes over the guiding plate and enters the inclined section of the adjusting groove, the inclined section causes the sliding rod to drive the piston plate to rotate a preset angle around the axis of the water inlet branch pipe. The piston plate then drives the rotating column to rotate a preset angle through the rotating cylinder.

[0020] At this time, the water pressure drives the piston plate away from the piston cylinder, and the water in the water inlet branch pipe flows into the water inlet groove through the gap between the piston plate and the rotating cylinder. When the water injection stops, the spring drives the piston plate to drive the sliding rod to move upward. When the sliding rod moves to the lower end of the guiding plate, the sliding rod pushes the lower end of the guiding plate to rotate upward around the guiding block, so that the originally lower end of the guiding plate becomes the upper end. Then when the water inlet branch pipe is injected with water again, the sliding rod will slide into another inclined section of the adjusting groove under the guidance of the guiding plate, thereby driving the piston plate to drive the rotating column to rotate reversely by a preset angle through the rotating cylinder. Thus, it is realized to drive the rotating column to rotate forward and backward by a preset angle around the axis of the rotating column, so that the inner water spraying hole originally communicating with the outer water spraying hole is rotated to be in sealing cooperation with the hole wall of the installation hole, the recovery pipe originally in sealing cooperation with the hole wall of the installation hole is rotated to communicate with the corresponding outer recovery hole, the inner water spraying hole originally in sealing cooperation with the hole wall of the installation hole is rotated to communicate with the corresponding outer water spraying hole, and the recovery pipe originally communicating with the outer recovery hole is rotated to be in sealing cooperation with the hole wall of the installation hole, so as to realize alternating water spraying on the surface of the first plate.

[0021] Further, a water inlet is provided at the upper end of the outer shell; the water inlet main pipe is introduced into the water inlet; the water inlet main pipe is communicated with the water inlet branch pipe.

[0022] Further, a collecting hopper is provided below the positive electrode tube. A part of the sewage enters the outer recovery hole through the recovery port, then enters the recovery pipe, flows into the drainage trough from the recovery pipe, and flows into the collecting hopper from the lower end of the drainage trough. Another part of the sewage flows down along the inner wall of the positive electrode tube into the collecting hopper.

[0023] Further, a working rack is fixed on the outer shell to facilitate maintenance by workers.

[0024] Further, the gap between adjacent positive electrode tubes is blocked by a partition to prevent the flue gas from escaping above the positive electrode tubes without being purified by the positive electrode tubes.

[0025] A flue gas treatment process for an incinerator, using the flue gas treatment equipment of the above incinerator, includes the following steps: S10, when it is necessary to clean the positive electrode tube, intermittently inject water into the water inlet branch pipe; S20, drive the rotating column to rotate forward and backward reciprocally by a preset angle around its own axis through the adjustment structure, so that the water spray nozzles of the two cleaning units corresponding to the first plate alternately spray water on the surface of the first plate, and the water flows in opposite directions alternately flow through the surface of the first plate; S30, for the water flow after flushing the first plate, a part of the water alternately flows into the recovery ports of the two cleaning units and is discharged, and the other part of the water continues to flush the surface of the second plate after passing over the recovery port, so as to alternately form a uniform water film flowing in the positive and negative directions along the circumference of the positive electrode tube on the inner side wall of the positive electrode tube; cooperate with multiple cleaning components distributed up and down to clean the positive electrode tube in sections and timely discharge the sewage after flushing.

[0026] The beneficial effects of the present invention are as follows: The auxiliary component enables the water spray nozzles of the two cleaning units corresponding to the first plate to alternately spray water on the surface of the first plate, and the water flows in opposite directions alternately flow through the surface of the first plate, and at the same time, the water flow directions on the N first plates are the same at the same moment. At the same time, the auxiliary component enables a part of the water flow after flushing the first plate to alternately flow into the recovery ports of the two cleaning units and be discharged, so as to timely discharge part of the dust from the positive electrode tube. At the same time, cooperate with multiple cleaning components distributed up and down to clean the positive electrode tube in sections and timely discharge the sewage after flushing, so as to prevent the sewage from gradually flowing down and accumulating at the lower end of the inner wall of the positive electrode tube and not being discharged in time, which affects the subsequent cleaning effect. The other part of the water continues to flush the surface of the second plate after passing over the recovery port, so as to alternately form a uniform water film flowing in the positive and negative directions along the circumference of the positive electrode tube on the inner side wall of the positive electrode tube, so as to prevent dead corners from being formed during cleaning and improve the cleaning effect. Description of the Drawings

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 Structural schematic diagram of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 2 Side view of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 3 Schematic diagram of a dust removal device of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 4 Is Figure 3 Enlarged view at A in Figure 5 Side view of a dust removal device of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 6 Is Figure 5 Cross-sectional view taken along line B-B in Figure 7 Is Figure 5 Cross-sectional view taken along line C-C in Figure 8 Is Figure 7 Enlarged view at D in Figure 9 Schematic diagram of a mating column, a rotating column, and a rotating cylinder of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 10 Side view of a rotating column and a rotating cylinder of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 11 Is Figure 10 Cross-sectional view taken along line E-E in Figure 12 Is Figure 11 Enlarged view at F in Figure 13 Top view of a mating column and a rotating cylinder of an embodiment of a flue gas treatment device for an incinerator of the present invention; Figure 14 Is Figure 13 Cross-sectional view taken along line G-G in Figure 15 Is Figure 14 Enlarged view at H in

[0029] In the figure: 100, outer shell; 110, air outlet; 120, air inlet; 130, water inlet; 200, cathode wire; 300, anode tube; 310, first plate; 320, second plate; 321, water spray opening; 322, recovery opening; 400, mating column; 410, water spray outer hole; 420, recovery outer hole; 500, rotating column; 510, water spray inner hole; 520, recovery pipe; 530, water inlet tank; 540, drainage tank; 600, rotating drum; 700, water inlet branch pipe; 710, adjustment groove; 711, vertical section; 712, inclined section; 810, piston cylinder; 820, piston plate; 830, slide bar; 910, guide block; 920, guide plate; 930, elastic sheet. Detailed implementation manner

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] An embodiment of the flue gas treatment device of an incinerator of the present invention is as Figures 1 to 15 shown, including an outer shell 100 and a dust removal device; an air outlet 110 is provided at the upper end of the outer shell 100, and an air inlet 120 is provided at the lower end. A working rack is fixed on the outer shell 100 to facilitate the maintenance of workers.

[0032] The dust removal device is arranged between the air outlet 110 and the air inlet 120; the dust removal device is provided with a plurality of dust removal units, and the dust removal units are arrayed in the outer shell 100, including a cathode wire 200, N first plates 310, N second plates 320, a cleaning component, and an auxiliary component; the cathode wire 200 is fixedly arranged in the outer shell 100 extending up and down; the N first plates 310 and the N second plates 320 are alternately distributed circumferentially around the cathode wire 200, and are connected end to end to enclose a polygonal anode tube 300; N is a positive integer greater than 1; the anode tube 300 is fixedly connected to the outer shell 100. The gap between adjacent anode tubes 300 is blocked by a partition to prevent the flue gas from escaping above the anode tube 300 without being purified by the anode tube 300.

[0033] There are multiple cleaning components distributed up and down along the axis of the positive electrode tube 300; the cleaning components include N cleaning structures distributed circumferentially along the positive electrode tube 300; each cleaning structure corresponds to a first plate 310; the cleaning structure includes two cleaning units; the two cleaning units are symmetrically distributed on both sides of the corresponding first plate 310 along the circumferential direction of the positive electrode tube 300; the cleaning unit includes a water spraying port 321 and a recovery port 322; the water spraying port 321 and the recovery port 322 of the same cleaning unit are opened on the same second plate 320; the water spraying ports 321 and the recovery ports 322 of the same cleaning component are at the same height. The recovery port 322 is opened on the second plate 320 and is arranged at the junction of the first plate 310 and the second plate 320; the water spraying port 321 is opened on the second plate 320 and is arranged on one side of the recovery port 322 of the same cleaning unit. A nozzle is built in the water spraying port 321, and the nozzle faces the first plate 310.

[0034] Among them, preferably, the number of the first plates 310 and the second plates 320 of each dust removal unit is set to four; the first plates 310 of the positive electrode tubes 300 of adjacent dust removal units that are close to each other overlap; the second plates 320 of the positive electrode tubes 300 of four adjacent dust removal units distributed in a ring enclose a cavity with a rectangular cross-section; the auxiliary component is arranged in the cavity.

[0035] The auxiliary component makes the water spraying ports 321 of the two cleaning units corresponding to the first plate 310 spray water on the surface of the first plate 310 alternately, so that the water flows with opposite flow directions flow through the surface of the first plate 310 alternately, and the water flow directions on the N first plates 310 are the same at the same moment. At the same time, the auxiliary component makes part of the water flow after scouring the first plate 310 flow into the recovery ports 322 of the two cleaning units alternately and be discharged, so as to discharge part of the dust from the positive electrode tube 300 in time. At the same time, it cooperates with multiple cleaning components distributed up and down to clean the positive electrode tube 300 in sections and discharge the flushed sewage in time, so as to prevent the sewage from flowing down gradually and accumulating at the lower end of the inner wall of the positive electrode tube 300 and not being discharged in time, which affects the subsequent cleaning effect. Another part of the water continues to scour the surface of the second plate 320 after passing over the recovery port 322, so as to alternately form a uniform water film flowing in the positive and negative circumferential directions of the positive electrode tube 300 on the inner side wall of the positive electrode tube 300, so as to prevent dead corners from being formed during cleaning and improve the cleaning effect.

[0036] The auxiliary component includes a mating column 400, a rotating column 500, a rotating cylinder 600, and an adjusting structure; the mating column 400 is arranged vertically with its axis, and its cross-section is rectangular; the mating column 400 is inserted into the cavity, and the side wall of the mating column 400 is fixedly connected to the second plate 320; a coaxial mounting hole is provided at the axis of the mating column 400; two outer hole groups are provided on each side wall of the mating column 400; the two outer hole groups respectively correspond to the cleaning units of two adjacent cleaning structures provided on the same second plate 320; the outer hole group includes a water spraying outer hole 410 and a recycling outer hole 420; the water spraying outer hole 410 connects the water spraying port 321 and the mounting hole; the recycling outer hole 420 connects the recycling port 322 and the mounting hole.

[0037] The rotating column 500 is arranged vertically and is rotatably mounted in the mounting hole; a drain groove 540 with a downward opening is provided on the lower end surface of the rotating column 500; an annular water inlet groove 530 with an upward opening is provided on the upper end surface of the rotating column 500; the water inlet groove 530 is coaxially arranged outside the drain groove 540.

[0038] Two inner hole groups are provided between the side wall of the rotating column 500 and the four side walls of the mating column 400; each inner hole group corresponds to an outer hole group; the inner hole group includes a water spraying inner hole 510 and a recycling inner hole; the water spraying inner hole 510 is arranged along the radial direction of the rotating column 500, and one end close to the axis of the rotating column 500 is communicated with the water inlet groove 530; the recycling inner hole is arranged along the radial direction of the rotating column 500; a recycling pipe 520 is inserted into the recycling inner hole; one end of the recycling pipe 520 close to the axis of the rotating column 500 passes through the water inlet groove 530 and is communicated with the drain groove 540; in the initial state, the water spraying inner hole 510 of one inner hole group in the two inner hole groups is communicated with the water spraying outer hole 410 of the corresponding outer hole group, and the pipe orifice of the recycling pipe 520 far from the axis of the rotating column 500 is in sealing fit with the hole wall of the mounting hole, and the water spraying inner hole 510 of the other inner hole group is in sealing fit with the hole wall of the mounting hole, and the pipe orifice of the recycling pipe 520 far from the axis of the rotating column 500 is communicated with the recycling outer hole 420 of the corresponding outer hole group.

[0039] The rotating cylinder 600 is threadedly sleeved on the upper end of the rotating column 500; a water inlet branch pipe 700 is provided at the upper end of the rotating cylinder 600; the lower end of the water inlet branch pipe 700 is in rotational fit with the rotating cylinder 600, and the upper end is fixed in the housing 100; water flows from the water inlet branch pipe 700 into the rotating cylinder 600 and enters the water inlet groove 530. An inlet port 130 is provided at the upper end of the housing 100; a main water inlet pipe is introduced into the inlet port 130; the main water inlet pipe is communicated with the water inlet branch pipe 700.

[0040] The adjusting structure drives the rotating column 500 to rotate forward and backward around its own axis by a preset angle, so that the water spraying inner hole 510 originally communicated with the water spraying outer hole 410 is rotated to be in sealing cooperation with the hole wall of the mounting hole, the recovery pipe 520 originally in sealing cooperation with the hole wall of the mounting hole is rotated to be communicated with the corresponding recovery outer hole 420, the water spraying inner hole 510 originally in sealing cooperation with the hole wall of the mounting hole is rotated to be communicated with the corresponding water spraying outer hole 410, and the recovery pipe 520 originally communicated with the recovery outer hole 420 is rotated to be in sealing cooperation with the hole wall of the mounting hole, so as to realize the alternating water spraying on the surface of the first plate 310. The adjusting structure includes an adjusting groove 710, a piston cylinder 810, a piston plate 820, and a guiding block 910; the adjusting groove 710 is in an inverted Y shape and is opened on the inner wall of the water inlet branch pipe 700; the adjusting groove 710 includes a vertical section 711 and an inclined section 712; the vertical section 711 extends in the vertical direction; there are two inclined sections 712, which are in a V shape with the small end facing upward; the vertical section 711 and the two inclined sections 712 are communicated with each other.

[0041] The piston cylinder 810 is coaxially arranged in the rotating cylinder 600 and is fixed to the upper end of the inner wall of the rotating cylinder 600; the piston plate 820 is slidably mounted up and down in the piston cylinder 810; a spring is fixedly connected between the piston plate 820 and the rotating cylinder 600; initially, the piston plate 820 seals the upper end of the rotating cylinder 600; an inverted L-shaped sliding rod 830 is fixed to the upper end of the piston plate 820; the vertical section of the sliding rod 830 is fixedly connected with the piston plate 820, and the horizontal section of the sliding rod 830 is slidably matched with the adjusting groove 710; initially, the horizontal section of the sliding rod 830 is located at the vertical section 711 of the adjusting groove 710.

[0042] The lower end of the guide block 910 is arc-shaped, and an elastic guide plate 920 is fixed to the upper end; the guide plate 920 and the guide block 910 are in a seesaw shape; the guide block 910 is rotatably installed at the junction of the lower groove walls of the two inclined sections 712; when the guide plate 920 is in a horizontal state, the distance between the end of the guide plate 920 and the upper groove wall of the inclined section 712 is less than the diameter of the slide rod 830; arc-shaped elastic pieces 930 are provided on both sides of the inclined section 712 of the guide plate 920 close to the adjustment groove 710; the elastic pieces 930 are arranged between the guide plate 920 and the lower groove wall of the inclined section 712 of the adjustment groove 710; the elastic pieces 930 are fixedly connected to the end of the guide plate 920; initially, the guide plate 920 deflects so that the two ends of the guide plate 920 are in an inclined state with one end higher and the other end lower. In other solutions, the guide plate 920 can be driven to deflect once initially by an electromagnetic method to ensure that all the guide plates 920 deflect in the same direction initially. When the anode tube 300 needs to be cleaned, water is intermittently injected into the water inlet branch pipe 700. When water is injected into the water inlet branch pipe 700, the water pressure pushes the piston plate 820 to move downward against the spring force. The piston plate 820 drives the slide rod 830 to slide from the vertical section 711 of the adjustment groove 710 to the inclined section 712. When the slide rod 830 slides to the guide plate 920, it slides along the inclined guide plate 920 toward the inclined section 712 close to the lower end of the guide plate 920, and the slide rod 830 presses the guide plate 920, causing the elastic piece 930 at the lower end of the guide plate 920 to abut against the lower groove wall of the inclined section 712 and deform, so that the lower end of the guide plate 920 abuts against the lower groove wall of the inclined section 712. When the slide rod 830 passes over the guide plate 920, the elastic piece 930 resets to drive the lower end of the guide plate 920 to move upward. After the slide rod 830 passes over the guide plate 920, it enters the inclined section 712 of the adjustment groove 710, and the inclined section 712 causes the slide rod 830 to drive the piston plate 820 to rotate a preset angle around the axis of the water inlet branch pipe 700. The piston plate 820 then drives the rotating column 500 to rotate a preset angle through the rotating cylinder 600.

[0043] At this time, the water pressure drives the piston plate 820 away from the piston cylinder 810, and the water in the water inlet branch pipe 700 flows into the water inlet groove 530 from the gap between the piston plate 820 and the rotating cylinder 600. When the water injection stops, the spring drives the piston plate 820 to drive the sliding rod 830 to move upward. When the sliding rod 830 moves to the lower end of the guide plate 920, the sliding rod 830 pushes the lower end of the guide plate 920 to rotate upward around the guide block 910, so that the original lower end of the guide plate 920 becomes the upper end. Then when the water inlet branch pipe 700 injects water again, the sliding rod 830 will slide into another inclined section 712 of the adjustment groove 710 under the guidance of the guide plate 920, thereby driving the piston plate 820 to drive the rotating column 500 to rotate reversely by a preset angle through the rotating cylinder 600. Thus, it is realized that the rotating column 500 rotates forward and backward by a preset angle around the axis of the rotating column 500, so that the water injection inner hole 510 originally communicating with the water spraying outer hole 410 is rotated to be in sealing cooperation with the hole wall of the installation hole, the recovery pipe 520 originally in sealing cooperation with the hole wall of the installation hole is rotated to communicate with the corresponding recovery outer hole 420, the water injection inner hole 510 originally in sealing cooperation with the hole wall of the installation hole is rotated to communicate with the corresponding water spraying outer hole 410, and the recovery pipe 520 originally communicating with the recovery outer hole 420 is rotated to be in sealing cooperation with the hole wall of the installation hole, so as to realize alternating directional water spraying on the surface of the first plate 310.

[0044] A collection hopper is provided below the positive electrode tube 300. A part of the sewage enters the recovery outer hole 420 through the recovery port 322, then enters the recovery pipe 520, flows into the drainage groove 540 from the recovery pipe 520, and flows into the collection hopper from the lower end of the drainage groove 540. Another part of the sewage flows down along the inner wall of the positive electrode tube 300 into the collection hopper.

[0045] A flue gas treatment process for an incinerator, using the flue gas treatment equipment of the above incinerator, includes the following steps: The first step is to intermittently inject water into the water inlet branch pipe 700 when the positive electrode tube 300 needs to be cleaned; The second step is to drive the rotating column 500 to rotate forward and backward by a preset angle around its own axis through the adjustment structure, so that the water spraying ports 321 of the two cleaning units corresponding to the first plate 310 alternately spray water on the surface of the first plate 310, and the water flows with opposite flow directions alternately flow through the surface of the first plate 310; The third step is that for the water flow after flushing the first plate 310, a part of the water alternately flows into the recovery ports 322 of the two cleaning units and is discharged, and the other part of the water continues to flush the surface of the second plate 320 after passing over the recovery ports 322, so as to alternately form a uniform water film flowing forward and backward along the circumferential direction of the positive electrode tube 300 on the inner side wall of the positive electrode tube 300; Cooperate with multiple cleaning components distributed up and down to clean the positive electrode tube 300 in sections and timely discharge the sewage after flushing.

[0046] Combined with the above embodiments, the working principle and process of the present invention are as follows: During use, the anode tube 300 and the cathode wire 200 are energized to form an electric field inside the anode tube 300. Flue gas is introduced through the air inlet 120. The dust in the flue gas moves towards the anode tube 300 under the drive of the electric field, causing the dust to adhere to the inner wall of the anode tube 300, and the purified flue gas is discharged through the air outlet 110. When it is necessary to clean the anode tube 300, water is intermittently injected into the water inlet branch pipe 700. When water is injected into the water inlet branch pipe 700, the water pressure pushes the piston plate 820 to move downward against the spring force. The piston plate 820 drives the slide rod 830 to slide from the vertical section 711 of the adjustment groove 710 to the inclined section 712. When the slide rod 830 slides to the guide plate 920, it slides along the inclined guide plate 920 towards the inclined section 712 near the lower end of the guide plate 920. The slide rod 830 presses the guide plate 920, causing the elastic piece 930 at the lower end of the guide plate 920 to abut against the lower groove wall of the inclined section 712 and deform, so that the lower end of the guide plate 920 abuts against the lower groove wall of the inclined section 712. When the slide rod 830 passes over the guide plate 920, the elastic piece 930 resets to drive the lower end of the guide plate 920 to move upward.

[0047] After the slide rod 830 passes over the guide plate 920 and enters the inclined section 712 of the adjustment groove 710, the inclined section 712 causes the slide rod 830 to drive the piston plate 820 to rotate a preset angle around the axis of the water inlet branch pipe 700. The piston plate 820 then drives the rotating column 500 to rotate a preset angle through the rotating cylinder 600.

[0048] At this time, the water pressure drives the piston plate 820 away from the piston cylinder 810, and the water in the water inlet branch pipe 700 flows into the water inlet groove 530 through the gap between the piston plate 820 and the rotating cylinder 600. When the water injection stops, the spring drives the piston plate 820 to drive the slide rod 830 to move upward. When the slide rod 830 moves to the lower end of the guide plate 920, the slide rod 830 pushes the lower end of the guide plate 920 to rotate upward around the guide block 910, so that the original lower end of the guide plate 920 becomes the upper end. Then when the water inlet branch pipe 700 is injected with water again, the slide rod 830 will slide into another inclined section 712 of the adjustment groove 710 under the guidance of the guide plate 920, thereby driving the piston plate 820 to drive the rotating column 500 to rotate a preset angle in the reverse direction through the rotating cylinder 600.

[0049] Thus, the rotating column 500 is driven to rotate back and forth in positive and negative directions around the axis of the rotating column 500 by a preset angle, so that the water spraying inner hole 510 originally communicated with the water spraying outer hole 410 is rotated to be in sealing cooperation with the hole wall of the mounting hole, the recovery pipe 520 originally in sealing cooperation with the hole wall of the mounting hole is rotated to be communicated with the corresponding recovery outer hole 420, the water spraying inner hole 510 originally in sealing cooperation with the hole wall of the mounting hole is rotated to be communicated with the corresponding water spraying outer hole 410, and the recovery pipe 520 originally communicated with the recovery outer hole 420 is rotated to be in sealing cooperation with the hole wall of the mounting hole, so as to realize the alternating reverse water spraying on the surface of the first plate 310. The water flows with opposite flow directions alternately flow through the surface of the first plate 310, and the water flow directions on N first plates 310 are the same at the same moment. Part of the water after flushing the first plate 310 alternately flows into the recovery ports 322 of the two cleaning units and is discharged, so as to timely discharge part of the dust from the anode tube 300. At the same time, a plurality of cleaning components distributed up and down cooperate to clean the anode tube 300 in sections and timely discharge the sewage after flushing, so as to prevent the sewage from gradually flowing down and accumulating at the lower end of the inner wall of the anode tube 300 and not being discharged in time, which affects the subsequent cleaning effect. Another part of the water continues to flush the surface of the second plate 320 after passing over the recovery port 322, so as to alternately form a uniform water film flowing in positive and negative directions along the circumferential direction of the anode tube 300 on the inner side wall of the anode tube 300, so as to prevent dead corners from being formed during cleaning and improve the cleaning effect. Part of the sewage enters the recovery outer hole 420 through the recovery port 322, then enters the recovery pipe 520, enters the drainage tank 540 from the recovery pipe 520, and flows into the collection hopper from the lower end of the drainage tank 540. Another part of the sewage flows down along the inner wall of the anode tube 300 into the collection hopper.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas treatment device for an incinerator, characterized in that: It includes a housing and a dust removal device; An air outlet is provided at the upper end of the housing, and an air inlet is provided at the lower end; The dust removal device is arranged between the air outlet and the air inlet; the dust removal device is provided with a plurality of dust removal units, and the dust removal units are arranged in an array in the housing, including a cathode wire, N first plates, N second plates, a cleaning component, and an auxiliary component; The cathode wire is fixedly arranged in the housing extending vertically up and down; The N first plates and the N second plates are alternately distributed circumferentially around the cathode wire and are connected end to end to enclose a polygonal anode tube; N is a positive integer greater than 1; the anode tube is fixedly connected to the housing; A plurality of cleaning components are distributed up and down along the axis of the anode tube; the cleaning component includes N cleaning structures distributed circumferentially along the anode tube; each cleaning structure corresponds to one first plate; the cleaning structure includes two cleaning units; the two cleaning units are symmetrically distributed on both sides of the corresponding first plate along the circumferential direction of the anode tube; the cleaning unit includes a water spray port and a recovery port; the water spray port and the recovery port of the same cleaning unit are opened on the same second plate; the water spray ports and the recovery ports of the same cleaning component are at the same height; The auxiliary component makes the water spray ports of the two cleaning units corresponding to the first plate spray water on the surface of the first plate alternately, so that the water flows with opposite flow directions flow through the surface of the first plate alternately, and at the same time, the water flow directions on the N first plates are the same at the same moment. At the same time, the auxiliary component makes part of the water flowing through the first plate flow into the recovery ports of the two cleaning units alternately and is discharged, and the other part of the water continues to wash the surface of the second plate after passing over the recovery port.

2. The flue gas treatment equipment of an incinerator according to claim 1, characterized in that: The recovery port is opened on the second plate and is arranged at the junction of the first plate and the second plate; the water spray port is opened on the second plate and is arranged on one side of the recovery port of the same cleaning unit. A nozzle is arranged in the water spray port and the nozzle faces the first plate.

3. The flue gas treatment equipment of an incinerator according to claim 2, characterized in that: The number of the first plates and the second plates of each dust removal unit is set to four; the first plates of the anode tubes of adjacent dust removal units that are close to each other overlap; the second plates of the anode tubes of four adjacent dust removal units distributed in a ring enclose a cavity with a rectangular cross-section; The auxiliary component is arranged in the cavity; 4. The flue gas treatment equipment of an incinerator according to claim 3, characterized in that: The auxiliary component includes a matching column, a rotating column, a rotating cylinder, and an adjusting structure; The axis of the matching column is arranged vertically up and down, and the cross-section is rectangular; the matching column is inserted into the cavity, and the side wall of the matching column is fixedly connected to the second plate; an installation hole with the same axis is opened at the axis of the matching column; two outer hole groups are opened on each side wall of the matching column; the two outer hole groups respectively correspond to the cleaning units of the cleaning structures opened on the same second plate of two adjacent cleaning structures; the outer hole group includes a water spray outer hole and a recovery outer hole; the water spray outer hole communicates the water spray port with the installation hole; the recovery outer hole communicates the recovery port with the installation hole; The rotating column is arranged vertically and is rotatably installed in the installation hole; a drain groove with an opening facing down is arranged on the lower end surface of the rotating column; an annular water inlet groove with an opening facing up is arranged on the upper end surface of the rotating column; the water inlet groove is coaxially arranged outside the drain groove; There are two inner hole groups provided between the side wall of the rotating column and the four side walls of the mating column; each inner hole group corresponds to an outer hole group; the inner hole group includes a water spraying inner hole and a recycling inner hole; the water spraying inner hole is arranged radially along the rotating column, and one end close to the axis of the rotating column communicates with the water inlet groove; the recycling inner hole is arranged radially along the rotating column; a recycling pipe is inserted into the recycling inner hole; one end of the recycling pipe close to the axis of the rotating column passes through the water inlet groove and then communicates with the drainage groove; in the initial state, the water spraying inner hole of one inner hole group in the two inner hole groups communicates with the water spraying outer hole of the corresponding outer hole group, and the pipe orifice of the recycling pipe far from the axis of the rotating column is in sealing cooperation with the hole wall of the mounting hole, while the water spraying inner hole of the other inner hole group is in sealing cooperation with the hole wall of the mounting hole, and the pipe orifice of the recycling pipe far from the axis of the rotating column communicates with the recycling outer hole of the corresponding outer hole group; The rotating cylinder is threadedly sleeved on the upper end of the rotating column; a water inlet branch pipe is provided at the upper end of the rotating cylinder; the lower end of the water inlet branch pipe is in rotational cooperation with the rotating cylinder, and the upper end is fixed inside the outer shell; water flows into the rotating cylinder from the water inlet branch pipe and enters the water inlet groove; The adjusting structure drives the rotating column to rotate forward and backward around its own axis by a preset angle.

5. The flue gas treatment equipment of an incinerator according to claim 4, characterized in that: The adjusting structure includes an adjusting groove, a piston cylinder, a piston plate, and a guiding block; The adjusting groove is in an inverted Y shape and is opened on the inner wall of the water inlet branch pipe; the adjusting groove includes a vertical section and an inclined section; the vertical section extends in the vertical direction; there are two inclined sections, which are in a V shape with the small end facing upward; the vertical section and the two inclined sections communicate with each other; The piston cylinder is coaxially arranged inside the rotating cylinder and is fixed to the upper end of the inner wall of the rotating cylinder; the piston plate is slidably installed up and down inside the piston cylinder; a spring is fixedly connected between the piston plate and the rotating cylinder; initially, the piston plate seals the upper end of the rotating cylinder; a reverse L-shaped sliding rod is fixed to the upper end of the piston plate; the vertical section of the sliding rod is fixedly connected to the piston plate, and the horizontal section of the sliding rod is in sliding cooperation with the adjusting groove; initially, the horizontal section of the sliding rod is at the vertical section of the adjusting groove; The lower end of the guiding block is in an arc shape, and an elastic guiding plate is fixed to the upper end; the guiding plate and the guiding block are in a seesaw shape; the guiding block is rotatably installed at the junction of the lower groove walls of the two inclined sections; when the guiding plate is in a horizontal state, the distance between the end of the guiding plate and the upper groove wall of the inclined section is less than the diameter of the sliding rod; arc-shaped elastic sheets are provided on both sides of the guiding plate close to the inclined section of the adjusting groove; the elastic sheets are arranged between the guiding plate and the lower groove wall of the inclined section of the adjusting groove; the elastic sheets are fixedly connected to the end of the guiding plate; initially, the guiding plate deflects to make the two ends of the guiding plate in an inclined state with one high and one low.

6. The flue gas treatment device of an incinerator according to claim 5, characterized in that: An inlet is provided at the upper end of the outer shell; a main inlet pipe is led into the inlet; the main inlet pipe is communicated with the water inlet branch pipe.

7. The flue gas treatment equipment for an incinerator according to claim 6, characterized in that: A collecting hopper is provided below the anodic tube.

8. The flue gas treatment equipment of an incinerator according to claim 7, characterized in that: A working rack is fixed on the outer shell.

9. The flue gas treatment device of an incinerator according to claim 8, characterized in that: The gap between adjacent anodic tubes is sealed by a partition plate.

10. A flue gas treatment process for an incinerator, which uses the flue gas treatment equipment of the incinerator described in claim 9, characterized in that: It includes the following steps: S10, when it is necessary to clean the anodic tube, intermittently inject water into the water inlet branch pipe; S20, drive the rotating column to rotate forward and backward around its own axis by a preset angle through the adjusting structure, so that the water spraying ports of the two cleaning units corresponding to the first plate spray water on the surface of the first plate alternately, and water flows with opposite flow directions flow through the surface of the first plate alternately; S30, after flushing the first plate, part of the water alternately flows into the recovery ports of the two cleaning units and is discharged, while the other part of the water continues to flush the surface of the second plate after passing through the recovery ports, so as to form a uniform water film on the inner wall of the anode tube, which alternately flows forward and backward along the circumference of the anode tube; Cooperate with multiple cleaning components distributed above and below to clean the anode tube in sections and discharge the flushing wastewater in time.

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