Boiler tail gas multi-stage treatment equipment

Abstract

The utility model discloses boiler tail gas multistage treatment equipment which comprises a gas inlet pipe, one end of the gas inlet pipe is communicated with a treatment box, a venturi tube is installed on one side, close to the inner wall of the treatment box, of the gas inlet pipe, the top of the treatment box is communicated with an air outlet pipe, and an exhaust fan is installed above the inner wall of the air outlet pipe. The utility model relates to the technical field of boiler tail gas treatment, through the cooperation of a servo motor, a threaded rod and a lifting plate, when a large amount of dust is accumulated on a dustproof net, the servo motor is used for driving the threaded rod to rotate, and a limiting column is used for enabling the lifting plate to rotate along with the rotation of the threaded rod, so that the lifting plate ascends and descends when the threaded rod rotates; the cleaning brush is driven to clean the dust screen, the influence on the tail gas purification effect is avoided, and the problems that the tail gas passing effect is reduced and the tail gas purification effect is influenced due to the fact that the filter screen of the filter device is full of dust during long-time use in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler tail gas treatment, in particular to a boiler tail gas multi-stage treatment device. Background Art

[0002] At present, various boilers are not only widely used in industry, but also increasingly widely used in people's daily lives. The main emissions from boiler combustion are sulfur dioxide and dust, among which sulfur dioxide is one of the main pollutants causing acid rain. Therefore, the emission of boiler exhaust gas has always been a problem that people are concerned about. If its emission is not filtered cleanly, it will inevitably cause damage to nature. Other harmful substances that are not filtered cleanly will also cause damage to nature.

[0003] When the prior art is used, the tail gas pipe of the boiler is connected to the air inlet pipe of the purification equipment, and the tail gas is processed by the internal filtering device and discharged through the exhaust pipe after reaching the emission standard.

[0004] However, in actual use, since there will be dust in the exhaust gas of the boiler, after a long period of filtration, the filter inside the purification device will be covered with dust, which will reduce its effect of passing the exhaust gas and affect the purification effect of the exhaust gas. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a multi-stage boiler exhaust gas treatment device, which solves the problem that in actual use, due to the presence of dust in the boiler exhaust gas, after a long period of filtration, the filter inside the purification device will be covered with dust, reducing its effect of passing exhaust gas and affecting the purification effect of the exhaust gas.

[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a boiler tail gas multi-stage treatment device, including an air intake pipe, one end of the air intake pipe is connected to a treatment box, a venturi is installed on the inner wall side of the air intake pipe close to the treatment box, the top of the treatment box is connected to an air outlet pipe, an exhaust fan is installed above the inner wall of the air outlet pipe, dustproof nets are arranged on both sides of the inner wall of the air intake pipe, the outer walls of the two dustproof nets are fixedly connected to the top of the air intake pipe by bolts, and the outer wall of the dustproof net is installed with a cleaning nodule The cleaning structure includes a servo motor, a threaded rod, a lifting plate, a limit column and a cleaning brush, the outer wall of the servo motor is fixedly connected to the top of the air intake pipe, the output end of the servo motor extends to one end inside the air intake pipe and is fixedly connected to the threaded rod, the outer wall of the threaded rod is movably connected to the lifting plate, and cleaning brushes are fixedly connected to both sides of the outer wall of the lifting plate, the outer walls of the two cleaning brushes are pressed against the outer wall of the dustproof net, the inner wall of the lifting plate is connected with the limit column, and the top of the limit column is fixedly connected to the top of the inner wall of the air intake pipe.

[0007] Preferably, a collection box is provided below the dustproof net, a mounting shell is slidably engaged with the outer wall of the collection box, and the top of the mounting shell is fixedly connected to the bottom of the air inlet pipe.

[0008] Preferably, a nozzle is arranged above the inner wall of the treatment box, the top of the nozzle is connected to a connecting pipe, an activated carbon plate is arranged above the connecting pipe, the outer wall of the activated carbon plate is fixedly connected to a mounting plate, and the outer wall of the mounting plate is mounted on the inner wall of the air outlet pipe.

[0009] Preferably, the inner wall of the air outlet duct is pressed against a spring, one end of the spring is pressed against an insert block, the outer wall of the insert block is movably connected to the inner wall of the air outlet duct, the end of the insert block extending to the inside of the air outlet duct is plugged into the outer wall of the mounting plate, the end of the insert block extending to the inside of the air outlet duct is fixedly connected to a pull rod, the outer wall of the pull rod is plugged into the inner wall of the spring, and the outer wall of the pull rod is movably connected to the inner wall of the air outlet duct.

[0010] Preferably, a water pump is fixedly connected to the outer wall of the treatment box, the input end of the water pump is connected to the bottom of the outer wall of the treatment box, the output end of the water pump is connected to one end of a connecting pipe, the connecting pipe extends to one side of the interior of the treatment box and is fixedly connected to a fixing frame, and the outer wall of the fixing frame is fixedly connected to the top of the inner wall of the treatment box by bolts.

[0011] Beneficial Effects

[0012] The utility model provides a boiler tail gas multi-stage treatment device. It has the following beneficial effects: the boiler tail gas multi-stage treatment device cooperates with a servo motor, a threaded rod and a lifting plate. When there is a lot of dust accumulated on the dustproof net, the servo motor is used to drive the threaded rod to rotate, and the limit column is used to make the lifting plate rotate with the threaded rod, so that it can be lifted and lowered when the threaded rod rotates, and the cleaning brush is driven to clean the dustproof net to avoid affecting the exhaust gas purification effect, which solves the problem that the filter screen of the filter device is full of dust when used for a long time, which reduces the exhaust gas passing effect and affects the exhaust gas purification effect.

[0013] Through the cooperation of springs, pull rods and plug blocks, the activated carbon board is inserted into the inside of the air outlet duct, and the plug block will be inserted into the outer wall of the mounting plate under the action of the spring to fix it. When replacing, pull the pull rod to drive the plug block to move out of the inside of the mounting plate, and replace the activated carbon board, making it more convenient to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the central air intake pipe, servo motor and dust screen;

[0017] Figure 4 for Figure 1 Schematic diagram of the structure of the installation plate, activated carbon plate and air outlet pipe.

[0018] In the figure: 1. air inlet pipe, 2. treatment box, 3. exhaust fan, 4. air outlet pipe, 5. dust screen, 6. collection box, 7. mounting shell, 8. threaded rod, 9. limit column, 10. servo motor, 11. venturi tube, 12. nozzle, 13. connecting pipe, 14. mounting plate, 15. water pump, 16. fixing bracket, 17. activated carbon plate, 18. cleaning brush, 19. lifting plate, 20. spring, 21. pull rod, 22. plug. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] However, in actual use, since there will be dust in the exhaust gas of the boiler, after a long period of filtration, the filter inside the purification device will be covered with dust, which will reduce its effect of passing the exhaust gas and affect the purification effect of the exhaust gas.

[0021] In view of this, the utility model provides a multi-stage treatment device for boiler exhaust gas, which solves the problem that in actual use, due to the presence of dust in the boiler exhaust gas, after a long period of filtration, the filter inside the purification device will be covered with dust, reducing its effect of passing exhaust gas and affecting the purification effect of exhaust gas.

[0022] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0023] Embodiment 1: Figure 1-4It can be seen that a boiler tail gas multi-stage treatment device includes an air intake pipe 1, one end of the air intake pipe 1 is connected to a treatment box 2, the air intake pipe 1 is connected to the tail gas discharge pipe of the boiler, a venturi tube 11 is installed on the inner wall side of the air intake pipe 1 close to the treatment box 2, wherein the venturi tube 11 can make general gas, flue gas, blast furnace gas containing more impurities, etc., not blocked during long-term use, the top of the treatment box 2 is connected to an air outlet pipe 4, an exhaust fan 3 is installed above the inner wall of the air outlet pipe 4, wherein the model of the exhaust fan 3 is not limited, dustproof nets 5 are arranged on both sides of the inner wall of the air intake pipe 1, and the dust in the tail gas is removed by using the dustproof nets 5, and the outer walls of the two dustproof nets 5 are fixedly connected to the air intake pipe 1 by bolts The top of the dustproof net 5 is provided with a cleaning section structure installed on the outer wall thereof. The cleaning structure comprises a servo motor 10, a threaded rod 8, a lifting plate 19, a limiting column 9 and a cleaning brush 18. The outer wall of the servo motor 10 is fixedly connected to the top of the air inlet pipe 1. The output end of the servo motor 10 extends to one end inside the air inlet pipe 1 and is fixedly connected to the threaded rod 8. The outer wall of the threaded rod 8 is movably connected to the lifting plate 19. Cleaning brushes 18 are fixedly connected to both sides of the outer wall of the lifting plate 19. The outer walls of the two cleaning brushes 18 are pressed against the outer wall of the dustproof net 5. The limiting column 9 is inserted into the inner wall of the lifting plate 19. The top of the limiting column 9 is fixedly connected to the top of the inner wall of the air inlet pipe 1. The model of the servo motor 10 is not limited.

[0024] In the specific implementation process, it is worth pointing out that, with the cooperation of the servo motor 10, the threaded rod 8 and the lifting plate 19, when there is a lot of dust accumulated on the dustproof net 5, the servo motor 10 is used to drive the threaded rod 8 to rotate, and the limit column 9 is used to make the lifting plate 19 rotate along with the threaded rod 8, so that it can be lifted and lowered when the threaded rod 8 rotates, driving the cleaning brush 18 to clean the dustproof net 5 to avoid affecting the exhaust gas purification effect;

[0025] Furthermore, a collection box 6 is provided below the dustproof net 5, and a mounting shell 7 is slidably engaged with the outer wall of the collection box 6, and the top of the mounting shell 7 is fixedly connected to the bottom of the air inlet pipe 1;

[0026] In the specific implementation process, it is worth pointing out that, with the cooperation of the dust screen 5, the collection box 6 and the installation shell 7, after the cleaning brush 18 cleans the outer wall of the dust screen 5, the dust on it will fall into the inside of the collection box 6, and when the collection box 6 is cleaned, it is removed from the inside of the installation shell 7 to be cleaned and replaced;

[0027] Furthermore, a nozzle 12 is provided above the inner wall of the treatment box 2, and a connecting pipe 13 is connected to the top of the nozzle 12, and an activated carbon plate 17 is provided above the connecting pipe 13. The outer wall of the activated carbon plate 17 is fixedly connected to a mounting plate 14, and the outer wall of the mounting plate 14 is mounted on the inner wall of the air outlet pipe 4. The nozzle 12 is used to spray water, so that the water reacts with sulfur dioxide in the tail gas, so that the sulfur dioxide is precipitated at the bottom of the water to avoid being discharged with the gas, and the activated carbon plate 17 is used to adsorb the remaining harmful gases.

[0028] In the specific implementation process, it is worth pointing out that, with the cooperation of the nozzle 12, the connecting pipe 13 and the activated carbon plate 17, when the tail gas enters the treatment box 2, the nozzle 12 will spray out the water, remove the sulfur dioxide therein, and adsorb the remaining harmful gases through the activated carbon plate 17, so that it can be discharged safely;

[0029] Specifically, when using the boiler exhaust multi-stage treatment equipment, the air intake pipe 1 is connected to the exhaust gas discharge pipe, and under the action of the exhaust fan 3, the internal air pressure of the treatment box 2 is reduced, so that the exhaust gas can enter the treatment box 2, and when passing through the air intake pipe 1, the dust in the exhaust gas will be adsorbed by the dustproof net 5, and when there is too much dust on the dustproof net 5, the servo motor 10 is used to drive the threaded rod 8 to rotate, and the limit column 9 is used to make the lifting plate 19 rotate along with the threaded rod 8, so that it can be lifted and lowered when the threaded rod 8 rotates, driving the cleaning brush 18 to clean the dustproof net 5, and the fallen dust enters the collection box 6, making it more convenient to handle. When passing through the end of the air intake pipe 1, it will enter the treatment box 2 through the venturi tube 11. The venturi tube 11 can make the gas flow into the treatment box 2 better, and use the nozzle 12 to spray water to remove sulfur dioxide in the gas, so that the gas can reach the discharge standard after being adsorbed by the activated carbon plate 17.

[0030] Embodiment 2: By Figure 1-4 It can be seen that the inner wall of the air outlet pipe 4 is pressed against a spring 20, one end of the spring 20 is pressed against an insert block 22, the outer wall of the insert block 22 is movably connected to the inner wall of the air outlet pipe 4, one end of the insert block 22 extending to the inside of the air outlet pipe 4 is plugged into the outer wall of the mounting plate 14, and one end of the insert block 22 extending to the inside of the air outlet pipe 4 is fixedly connected to a pull rod 21, the outer wall of the pull rod 21 is plugged into the inner wall of the spring 20, and the outer wall of the pull rod 21 is movably connected to the inner wall of the air outlet pipe 4;

[0031] In the specific implementation process, it is worth pointing out that, with the cooperation of the spring 20, the pull rod 21 and the insert block 22, the activated carbon board 17 is inserted into the inside of the air outlet pipe 4, and the insert block 22 is inserted into the outer wall of the mounting plate 14 under the action of the spring 20 to fix it, and when replacing, the pull rod 21 is pulled to drive the insert block 22 to move out of the inside of the mounting plate 14, and the activated carbon board 17 can be replaced, making it more convenient when replacing;

[0032] Further, a water pump 15 is fixedly connected to the outer wall of the treatment box 2, the input end of the water pump 15 is connected to the lower part of the outer wall of the treatment box 2, and the output end of the water pump 15 is connected to one end of the connecting pipe 13, and the connecting pipe 13 is extended to the side of the inside of the treatment box 2 and is fixedly connected to a fixing frame 16, and the outer wall of the fixing frame 16 is fixedly connected to the upper part of the inner wall of the treatment box 2 by bolts, wherein the model of the water pump 15 is not limited;

[0033] In the specific implementation process, it is worth pointing out that, with the cooperation of the water pump 15, the connecting pipe 13 and the fixing frame 16, the water pump 15 is used to transport the liquid in the treatment box 2 to the nozzle 12 through the connecting pipe 13, so that it is sprayed out to remove sulfur dioxide in the tail gas, and it can also be reused;

[0034] Specifically, based on the above embodiment, when the exhaust gas enters the treatment box 2, the water pump 15 is used to suck the liquid in the treatment box 2 into the connecting pipe 13, and the liquid is sprayed out by the nozzle 12 to remove the sulfur dioxide in the exhaust gas, and the liquid falls into the treatment box 2 after being sprayed out, so that it can be recycled. After being treated by the liquid, the gas is absorbed by the activated carbon plate 17, so that the discharged gas is safer and more environmentally friendly.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler tail gas multi-stage treatment device, comprising an air inlet pipe (1), characterized in that: One end of the air inlet pipe (1) is connected to a processing box (2); a venturi tube (11) is installed on one side of the inner wall of the air inlet pipe (1) close to the processing box (2); the top of the processing box (2) is connected to an air outlet pipe (4); an exhaust fan (3) is installed above the inner wall of the air outlet pipe (4); dustproof nets (5) are arranged on both sides of the inner wall of the air inlet pipe (1); the outer walls of the two dustproof nets (5) are fixedly connected to the top of the air inlet pipe (1) by bolts; and a cleaning section structure is installed on the outer wall of the dustproof net (5); The cleaning structure comprises a servo motor (10), a threaded rod (8), a lifting plate (19), a limiting column (9) and a cleaning brush (18); The outer wall of the servo motor (10) is fixedly connected to the top of the intake pipe (1); the output end of the servo motor (10) extends to one end inside the intake pipe (1) and is fixedly connected to a threaded rod (8); the outer wall of the threaded rod (8) is movably connected to a lifting plate (19); cleaning brushes (18) are fixedly connected to both sides of the outer wall of the lifting plate (19); the outer walls of the two cleaning brushes (18) are pressed against the outer wall of the dustproof net (5); the inner wall of the lifting plate (19) is plugged with a limiting column (9); the top of the limiting column (9) is fixedly connected to the top of the inner wall of the intake pipe (1).

2. The boiler tail gas multi-stage treatment equipment according to claim 1, characterized in that: A collection box (6) is provided below the dustproof net (5), and a mounting shell (7) is slidably engaged on the outer wall of the collection box (6), and the top of the mounting shell (7) is fixedly connected to the bottom of the air inlet pipe (1).

3. The boiler tail gas multi-stage treatment equipment according to claim 1, characterized in that: A nozzle (12) is arranged above the inner wall of the treatment box (2); the top of the nozzle (12) is connected to a connecting pipe (13); an activated carbon plate (17) is arranged above the connecting pipe (13); the outer wall of the activated carbon plate (17) is fixedly connected to a mounting plate (14); the outer wall of the mounting plate (14) is mounted on the inner wall of the air outlet pipe (4).

4. The boiler tail gas multi-stage treatment equipment according to claim 1, characterized in that: The inner wall of the air outlet pipe (4) is pressed against a spring (20), one end of the spring (20) is pressed against an insert block (22), the outer wall of the insert block (22) is movably connected to the inner wall of the air outlet pipe (4), one end of the insert block (22) extending to the inside of the air outlet pipe (4) is plugged into the outer wall of the mounting plate (14), one end of the insert block (22) extending to the inside of the air outlet pipe (4) is fixedly connected to a pull rod (21), the outer wall of the pull rod (21) is plugged into the inner wall of the spring (20), and the outer wall of the pull rod (21) is movably connected to the inner wall of the air outlet pipe (4).

5. The boiler tail gas multi-stage treatment equipment according to claim 1, characterized in that: A water pump (15) is fixedly connected to the outer wall of the treatment box (2); the input end of the water pump (15) is connected to the lower part of the outer wall of the treatment box (2); the output end of the water pump (15) is connected to one end of a connecting pipe (13); one side of the connecting pipe (13) extending to the inside of the treatment box (2) is fixedly connected to a fixing frame (16); the outer wall of the fixing frame (16) is fixedly connected to the upper part of the inner wall of the treatment box (2) by bolts.

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