Flue gas collection and pretreatment device

Abstract

The application discloses a flue gas collecting and pretreating device and belongs to the technical field of flue gas monitoring equipment. The flue gas collecting and pretreating device comprises a mounting box and further comprises a filtering assembly arranged at the bottom left side in the mounting box and used for filtering dust and tar in flue gas; water in the cooling assembly absorbs the heat of flue gas to evaporate, and when the steam pressure reaches a certain degree, the steam enters the power conversion assembly, then the filtering conversion assembly is driven by the power conversion assembly to convert the state, the position of the part filtered by the filtering assembly and the part without filtering flue gas is exchanged, the part without filtering flue gas is used to filter flue gas, then the water vapor enters the filtering assembly through the power conversion assembly to clean the part filtering flue gas, so that the filtering assembly is automatically cleaned, and the filtering assembly is prevented from being blocked by too much dust and tar accumulated on the filtering assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas monitoring equipment, and particularly relates to a flue gas collecting and preprocessing device. BACKGROUND

[0002] The flue gas preprocessing device is mainly applied to the gas analysis industry, and the main principle is to sample the flue gas on site to carry out dehumidification, dust filtration and tar filtration treatment, so that the gas analyzer can normally detect the concentration, and the whole process is automatic treatment without human intervention.

[0003] In the prior art, since part of the flue gas contains a large amount of dust, the filter holes on the filter device in the preprocessing device are easily blocked, and manual processing and replacement are required frequently, and in the transmission process, when the air pump transmits the gas to the gas detector, the gas flow rate is fast, which easily causes impact on the gas detector, reduces the service life of the gas detector, and since the air pump is always working to transmit the gas, the heat dissipation system of the air pump cannot meet the heat dissipation requirement of the air pump working all the time, and in the process, the air pump is easily damaged, and in addition, when the flue gas is cooled, part of the gaseous impurities in the flue gas inside the heat dissipation pipe are re-solidified and adsorbed on the inner wall of the heat dissipation pipe, causing blockage of the heat dissipation pipe and reducing the heat dissipation effect of the heat dissipation pipe. SUMMARY

[0004] The present application aims at solving the problems of frequent manual replacement of the filter chamber and easy blockage of the heat dissipation pipe in the prior art, and provides a flue gas collecting and preprocessing device.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] The flue gas collecting and preprocessing device comprises a mounting box, and further comprises: a filter assembly arranged on the bottom left side in the mounting box and used for filtering dust and tar in the flue gas; a cooling assembly arranged on the bottom right side in the mounting box and used for generating water vapor by absorbing heat of the flue gas with water inside; an air pump arranged on the top of the cooling assembly and used for transmitting the flue gas; a gas flow meter arranged on the top of the cooling assembly and used for detecting the gas flow rate, wherein the input end of the gas flow meter is connected with the output pipeline of the air pump; a gas detector arranged in the mounting box and used for detecting the gas composition; and a power conversion assembly arranged in the cooling assembly, wherein the power conversion assembly is used for converting the pressure of the water vapor into power for switching the state of the filter assembly and for transmitting the water vapor to the inside of the filter assembly to automatically clean the filter assembly.

[0007] In order to facilitate the filtration of dust, tar and the like in the flue gas, preferably, the filter assembly comprises a filter box fixedly connected in the mounting box, an installation box fixedly connected in the filter box and dividing the filter box into a filter cavity and a cleaning cavity, an installation shaft rotatably connected in the installation box, an installation disc fixedly connected on the installation shaft, a sealing groove corresponding to the outer wall of the installation disc formed on the inner wall of the filter box, two symmetrical filter plates fixedly connected on the installation disc, and a sealing strip fixedly connected on the installation disc and abutting against the groove wall of the groove and the groove arm of the sealing groove.

[0008] In order to facilitate heat preservation, preferably, the cooling box comprises a heat preservation box fixedly connected in the mounting box and a plurality of heat dissipation pipes arranged in the heat preservation box, wherein the heat preservation box comprises an outer box and an inner box, a heat insulation cavity is arranged in the inner box, and an L-shaped plate is fixedly connected in the inner box and divides the inner box into a first installation cavity and a second installation cavity.

[0009] In order to facilitate the use of flue gas, preferably, each of the plurality of heat dissipation pipes comprises an annular pipe fixedly connected on the L-shaped plate, a plurality of sealing scrapers slidably connected in the annular pipe, the plurality of sealing scrapers being fixedly connected through an annular rod, a discharge pipe fixedly connected at the bottom of the annular pipe, an air inlet pipe fixedly connected at the lower left end of the annular pipe, a shunt pipe fixedly connected at the input end of the plurality of air inlet pipes, the input end of the shunt pipe being connected with the exhaust end of the filter cavity through a first pipeline, an air outlet pipe fixedly connected at the upper right end of the annular pipe, and a flow converging box fixedly connected at the output end of the plurality of air outlet pipes and connected with the input end of the air pump through a seventh pipeline.

[0010] Preferably, the power conversion assembly comprises an installation pipe fixedly connected at the top of the heat preservation box, a fourth pipeline fixedly connected on the heat preservation box and communicating the installation pipe and the second installation cavity, an overflow valve fixedly connected on the fourth pipeline, a piston plate slidably connected in the installation pipe, a push rod fixedly connected on the piston plate, a rack fixedly connected with the push rod extending out of the installation pipe, a gear meshing with the rack connected with the installation shaft extending to the top of the filter box through a ratchet mechanism, and a spring sleeved on the push rod and abutting against the piston plate and the installation pipe at both ends.

[0011] In order to facilitate cleaning of the filter plate, preferably, a shunt plate is fixedly connected in the cleaning cavity, a sixth pipeline is fixedly connected at the top of the installation pipe, a three-way joint is fixedly connected on the sixth pipeline, and a fifth pipeline connected with the shunt plate is fixedly connected at the output end of the three-way joint.

[0012] In order to improve the service life of the gas detector, preferably, a buffer assembly is further included, the buffer assembly comprises a buffer box fixedly connected in the mounting box, a turbine is rotatably connected in the buffer box, a converging ring connected with the exhaust end of the buffer box is fixedly connected to the top of the buffer box, the converging ring is connected with the input end of the gas detector through a third pipeline, a diverging ring connected with the air inlet of the buffer box is fixedly connected to the bottom of the buffer box, and the diverging ring is connected with the output end of the gas flow meter through a second pipeline.

[0013] In order to facilitate heat dissipation of the air pump, preferably, a wind tube is fixedly connected in the mounting box, the air pump is arranged in the wind tube, a transmission shaft is fixedly connected to the wind tube, a fan blade is fixedly connected to the transmission shaft extending into the wind tube, the transmission shaft extending into the buffer box is fixedly connected with the turbine, and an exhaust pipe connected with the three-way joint is fixedly connected to the exhaust end of the wind tube.

[0014] In order to facilitate water feeding into the inner box, preferably, a water feeding assembly is further included, the water feeding assembly comprises a water feeding pipe fixedly connected to the mounting box, the water feeding pipe extends into the first mounting cavity, a drain hole is formed in the side wall of the water feeding pipe in the second mounting cavity, a sliding rod is slidably connected to the water feeding pipe, a sealing plate is fixedly connected to the top of the sliding rod extending into the water feeding pipe, a float ball is fixedly connected to the sliding rod extending into the first mounting cavity, and a through hole communicating the first mounting cavity and the second mounting cavity is formed in the side wall of the L-shaped plate at an upper position.

[0015] Preferably, the float ball is a solid foam ball.

[0016] Compared with the prior art, the present application provides a flue gas collection and pretreatment device, which has the following advantages:

[0017] 1. The flue gas collection and pretreatment device, through the water in the cooling assembly absorbing the heat of the flue gas to evaporate, and after the steam pressure reaches a certain degree, entering the power conversion assembly, then driving the filter conversion assembly to convert the state through the power conversion assembly, the position of the part filtered by the filter assembly and the part without filtering the flue gas is exchanged, the part without filtering the flue gas is used to filter the flue gas, then the water vapor enters the inside of the filter assembly through the power conversion assembly to clean the part filtering the flue gas, so as to realize automatic cleaning of the filter assembly, and avoid that the filter assembly is blocked by too much dust and tar accumulated on the filter assembly;

[0018] 2. The flue gas collection and pretreatment device, through the flue gas driving the sealing scraper to rotate, scraping and washing the inner wall of the annular pipe, and scraping off the adsorbed material on the inner wall of the annular pipe which is re-solidified into particles due to the heat dissipation of the flue gas, so as to avoid that the annular pipe is blocked, and avoid that the adsorbed material is too much to reduce the heat dissipation of the flue gas, and avoid that the heat dissipation effect of the cooling assembly is poor;

[0019] 3. The flue gas collection pretreatment device, through the heat carried by the flue gas, the water is heated to generate water vapor to clean the filter plate, improve the utilization of heat energy and improve the cleaning effect of the filter plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A perspective view of a flue gas collection pretreatment device according to the present application is shown;

[0021] Figure 2 A main sectional view of a flue gas collection pretreatment device according to the present application is shown;

[0022] Figure 3 A structure diagram of a mounting box of a flue gas collection pretreatment device according to the present application is shown;

[0023] Figure 4 A structure diagram of a flue gas collection pretreatment device according to the present application is shown; Figure 3 A structure diagram of part A of a flue gas collection pretreatment device according to the present application is shown;

[0024] Figure 5 A structure diagram of a heat dissipation pipe of a flue gas collection pretreatment device according to the present application is shown;

[0025] Figure 6 A structure diagram of a flue gas collection pretreatment device according to the present application is shown; Figure 3 A structure diagram of a flue gas collection pretreatment device according to the present application is shown;

[0026] Figure 7 A structure diagram of a filter box of a flue gas collection pretreatment device according to the present application is shown;

[0027] Figure 8 A structure diagram of a mounting disc of a flue gas collection pretreatment device according to the present application is shown.

[0028] In the figure: 1, installation box; 2, filter box; 201, filter cavity; 202, cleaning cavity; 203, installation box; 204, installation shaft; 205, installation disc; 2051, sealing strip; 2052, filter plate; 206, gear; 207, first pipeline; 208, shunt pipe; 3, heat preservation box; 301, outer box; 302, inner box; 303, heat insulation cavity; 304, L plate; 3041, first installation cavity; 3042, second installation cavity; 305, through hole; 4, gas flow meter; 5, gas detector; 6, buffer assembly; 601, second pipeline; 602, shunt ring; 603, buffer box; 604, converging ring; 605, third pipeline; 606, exhaust pipe; 607, turbine; 608, transmission shaft; 609, fan blade; 610, air duct; 7, water inlet assembly; 701, water inlet pipe; 702, sliding rod; 703, sealing plate; 704, floating ball; 705, drain hole; 8, shunt plate; 801, installation pipe; 802, fourth pipeline; 803, fifth pipeline; 804, overflow valve; 805, piston plate; 806, push rod; 807, rack; 808, spring; 809, sixth pipeline; 810, tee joint; 9, heat dissipation pipe; 901, annular pipe; 902, sealing scraper; 903, annular rod; 904, air inlet pipe; 905, exhaust pipe; 906, converging box; 907, seventh pipeline; 908, air pump; 909, discharge pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. EMBODIMENT

[0031] REFERENCE Figures 1-8The utility model provides a flue gas collection pretreatment device, including installation box 1, still include: the filter assembly for filtering the dust, tar in flue gas is arranged in the bottom left side in installation box 1, the cooling assembly is arranged in the bottom right side in installation box 1, and the inside water absorbs the heat of flue gas and generates water vapor, the gas pump 908 for transmitting flue gas is arranged at the top of cooling assembly, the gas flow meter 4 for detecting gas flow is arranged at the top of cooling assembly, and the input end of gas flow meter 4 is connected with the output pipeline of gas pump 908, the gas detector 5 for detecting gas composition is arranged in installation box 1, and the power conversion assembly is arranged in cooling assembly, and the power conversion assembly is used to convert the pressure of water vapor into the power of filter assembly switching state and is used to transmit water vapor to filter assembly inside and carries out automatic cleaning to filter assembly.

[0032] Gas is sent into filter assembly inside through the heat -resistant pump body outside and is filtered, and the dust and tar in flue gas are filtered, and after filtering, flue gas is sent into cooling assembly, and the water in cooling assembly absorbs the heat of flue gas and generates water vapor, and flue gas is cooled, then enters gas flow meter 4 in gas pump 908 and is measured, then enters the gas composition (sulfur monoxide, sulfur dioxide, carbon monoxide, carbon dioxide and other substances, can select corresponding gas detector 5 according to need, or mixed detector for detecting multiple gases, not specific constraint here) in gas detector 5 whether it is excessive, then is transmitted to computer through bluetooth, data line and other transmission means, and the gas exhaust installation box 1 after detector, wherein when the steam pressure in cooling assembly reaches a certain degree, enters power conversion assembly, then is driven filter conversion assembly switching state through power conversion assembly, and the part of filter assembly filtered and the part of flue gas not filtered are position exchanged, and the part of flue gas not filtered is used to filter flue gas, then water vapor enters filter assembly inside through power conversion assembly and washes the part of flue gas filtered, to realize automatic cleaning to filter assembly, avoid that the dust and tar accumulated on filter assembly are too much to block filter assembly.

[0033] Refer to Figure 3 , Figure 7 and Figure 8 , filter assembly includes filter box 2 fixedly connected in installation box 1, and the installation box 203 for dividing filter box 2 into filter cavity 201 and cleaning cavity 202 is fixedly connected in filter box 2, the installation shaft 204 is rotatably connected in installation box 203, the mounting disc 205 is fixedly connected on installation shaft 204, the sealing groove corresponding with the outer wall of mounting disc 205 is formed on the inner wall of filter box 2, two symmetrical filter plates 2052 are fixedly connected on mounting disc 205, the sealing strip 2051 is fixedly connected on mounting disc 205, and the sealing strip 2051 is attached to the groove wall on the side wall of installation box 203 and the slot arm of sealing groove.

[0034] For the convenience of description, the two filter plates 2052 are divided into a plate A and a plate B. When the mounting shaft 204 is driven to rotate by the power conversion assembly, the mounting shaft 204 rotates by 180 degrees, the plate A in the filter cavity 201 is switched to the cleaning cavity 202 for cleaning by water vapor, and the plate B in the cleaning cavity 202 is switched to the filter cavity 201 for filtering flue gas, so as to automatically clean the filter plates 2052 and prevent the filter holes of the filter plates 2052 from being blocked. Preferably, the filter plates 2052 are made of porous materials such as sponges.

[0035] With reference to Figures 3-4 The cooling box comprises a heat preservation box 3 fixedly connected in the mounting box 1 and a plurality of groups of heat dissipation pipes 9 arranged in the heat preservation box 3, and the number of the groups of heat dissipation pipes 9 is 5-10. The heat preservation box 3 comprises an outer box 301 and an inner box 302, and a heat insulation cavity 303 is arranged inside the outer box 301 and the inner box 302. An L-shaped plate 304 is fixedly connected in the inner box 302 and divides the inner box 302 into a first mounting cavity 3041 and a second mounting cavity 3042.

[0036] The heat insulation cavity 303 arranged in the heat preservation box 3 is used for heat insulation, so as to reduce the speed of heat dissipation of the heat preservation box 3 to the outside. The heat insulation cavity 303 can also be filled with heat insulation materials such as cotton and polyurethane foaming materials.

[0037] With reference to Figure 5 Each of the plurality of groups of heat dissipation pipes 9 comprises a ring-shaped pipe 901 fixedly connected to the L-shaped plate 304. A plurality of groups of sealing scrapers 902 are slidably connected in the ring-shaped pipe 901, and the number of the groups of sealing scrapers 902 is 6-10. The groups of sealing scrapers 902 are fixedly connected through a ring-shaped rod 903. A discharge pipe 909 is fixedly connected to the bottom of the ring-shaped pipe 901. An air inlet pipe 904 is fixedly connected to the lower left end of the ring-shaped pipe 901. Input ends of the plurality of groups of air inlet pipes 904 are fixedly connected to a flow distribution pipe 208. An input end of the flow distribution pipe 208 is connected to an exhaust end of the filter cavity 201 through a first pipe 207. An air outlet pipe 905 is fixedly connected to the upper right end of the ring-shaped pipe 901. Output ends of the plurality of groups of air outlet pipes 905 are fixedly connected to a flow converging box 906. The flow converging box 906 is connected to an input end of an air pump 908 through a seventh pipe 907.

[0038] The number of the air inlet pipes 904 and the air outlet pipes 905 is the same as that of the ring-shaped pipes 901, and they correspond to each other.

[0039] The flue gas enters the shunt pipe 208 after filtration, and is shunted into a plurality of annular pipes 901, pushing the sealing scraper 902 to rotate clockwise in the annular pipe 901, while the air pump 908 is started. The air pump 908 sucks the flue gas inside the annular pipe 901 through the seventh pipeline 907. The annular pipe 901 is made of metal with good heat conductivity, such as brass. When the sealing scraper 902 rotates, the inner wall of the annular pipe 901 is scraped and washed, and the adsorbed material on the inner wall of the annular pipe 901, which is re-solidified into particles from the flue gas, is scraped off, thereby avoiding the annular pipe 901 from being blocked, and avoiding the excessive adsorbed material from reducing the flue gas heat dissipation, and avoiding the heat dissipation effect of the cooling assembly from being poor. The scraped particles are discharged from the installation box 1 through the discharge pipe 909. The discharge pipe 905 is provided with a filter screen to prevent the re-solidified particles from entering the air pump 908 and causing the air pump 908 to be blocked. The air pump 908 is a bidirectional pump that can both suck the gas inside the annular pipe 901 and spray gas into the annular pipe 901. When the gas is sprayed into the annular pipe 901, the particles adsorbed on the filter screen can be blown off, avoiding the filter screen from being blocked.

[0040] With reference to Figures 3-4 The power conversion assembly includes a mounting pipe 801 fixedly connected to the top of the heat preservation box 3. The heat preservation box 3 is fixedly connected with a fourth pipeline 802 communicating the mounting pipe 801 and the second mounting cavity 3042. The fourth pipeline 802 is fixedly connected with an overflow valve 804. A piston plate 805 is slidingly connected in the mounting pipe 801. A push rod 806 is fixedly connected to the piston plate 805 and extends out of the mounting pipe 801 to be fixedly connected with a rack 807. The mounting shaft 204 extends to the top of the filter box 2 and is connected with a gear 206 engaged with the rack 807 through a ratchet mechanism. A spring 808 is sleeved on the push rod 806, and the two ends of the spring 808 are respectively abutted against the piston plate 805 and the mounting pipe 801.

[0041] When the water inside the heat preservation box 3 absorbs the heat of the flue gas to form water vapor, the pressure inside the heat preservation box 3 increases. When the pressure increases to a certain extent, the water flows into the mounting pipe 801 through the overflow valve 804 to push the piston plate 805 to slide. The piston plate 805 drives the rack 807 to slide through the push rod 806. The rack 807 drives the gear 206 to rotate. The gear 206 drives the mounting shaft 204 to rotate, and the mounting shaft 204 drives the mounting disc 205 to rotate, thereby changing the positions of the alpha plate and the beta plate, and facilitating the rotation cleaning of the alpha plate and the beta plate. When the pressure inside the mounting pipe 801 decreases, the spring 808 pushes the piston plate 805 to reset. When the piston plate 805 resets, the rack 807 resets, but under the action of the ratchet mechanism, the rack 807 resets without driving the gear 206 to rotate, so the mounting disc 205 will not be driven to rotate.

[0042] With reference to Figure 3The cleaning cavity 202 is fixedly connected with a shunt plate 8, the top of the mounting pipe 801 is fixedly connected with a sixth pipeline 809, the sixth pipeline 809 is fixedly connected with a three-way joint 810, and the output end of the three-way joint 810 is fixedly connected with a fifth pipeline 803 connected with the shunt plate 8.

[0043] When the piston plate 805 moves beyond the sixth pipeline 809, the sixth pipeline 809 is communicated, the water vapor in the mounting pipe 801 enters the three-way joint 810 through the sixth pipeline 809, and then enters the shunt plate 8 through the fifth pipeline 803 to be shunted and sprayed to the filter plate 2052, so that the filter plate 2052 is back-flushed, the high temperature of the water vapor can add the molecular activity of the tar, the pressure above the filter plate 2052 in the cleaning cavity 202 is greater than the pressure below the filter plate 2052, the water vapor flows from top to bottom, and the dust and tar blocked in the filter hole at the bottom of the filter plate 2052 are cleaned through the holes in the filter plate 2052. In the application, the heat carried by the flue gas is used to heat water to generate water vapor to clean the filter plate 2052, so that the heat energy utilization is improved and the cleaning effect of the filter plate 2052 is improved.

[0044] Referring to Figure 6 The buffer assembly 6 comprises a buffer box 603 fixedly connected in the mounting box 1, a turbine 607 rotatably connected in the buffer box 603, a converging ring 604 fixedly connected at the top of the buffer box 603 and connected with the exhaust end of the buffer box 603, the converging ring 604 being connected with the input end of the gas detector 5 through a third pipeline 605, and a shunt ring 602 fixedly connected at the bottom of the buffer box 603 and connected with the gas inlet of the buffer box 603, the shunt ring 602 being connected with the output end of the gas flow meter 4 through a second pipeline 601.

[0045] The flue gas discharged by the gas flow meter 4 enters the shunt ring 602 to be shunted into the buffer box 603 to drive the turbine 607 to rotate, the turbine 607 consumes the kinetic energy transmitted by the flue gas to reduce the impact on the gas detector 5, so that the gas detector 5 is not damaged by the high-flow-rate gas, and the use time of the gas detector 5 is prolonged.

[0046] Referring to Figure 3 And Figure 3 The mounting box 1 is fixedly connected with a wind cylinder 610, the air pump 908 is arranged in the wind cylinder 610, the wind cylinder 610 is fixedly connected with a transmission shaft 608, the transmission shaft 608 extends into the wind cylinder 610 and is fixedly connected with a fan blade 609, the transmission shaft 608 extends into the buffer box 603 and is fixedly connected with the turbine 607, and the exhaust end of the wind cylinder 610 is fixedly connected with an exhaust pipe 606 connected with the three-way joint 810.

[0047] The turbine 607 rotates through the transmission shaft 608, the transmission shaft 608 drives the fan blade 609 to rotate, further reduces the flow rate of the flue gas through the buffer tank 603, further reduces the impact of the flue gas on the gas detector 5, absorbs the external normal temperature air to form a normal temperature air flow to the air pump 908, cools the air pump 908, the normal temperature air flow absorbs the heat energy of the heat dissipation of the air pump 908 to form a hot air flow, then enters the three-way joint 810 through the exhaust pipe 606, then flows into the flow distribution plate 8 through the fifth pipeline 803, and is sprayed to the filter plate 2052 in the cleaning cavity 202 through the flow distribution plate 8, accelerates the drying of the filter plate 2052, in the application, the rotation of the fan blade 609 driven by the turbine 607 cools the air pump 908, improves the heat dissipation effect of the air pump 908, and at the same time forms a hot air flow to blow to the cleaned filter plate 2052, accelerates the drying of the filter plate 2052, and at the same time the rotation of the fan blade 609 further consumes the kinetic energy of the flue gas flow, further reduces the flow rate of the flue gas, thereby further reducing the impact of the flue gas on the gas detector 5, and further improving the service life of the gas detector 5, and reducing the failure rate of the gas detector 5.

[0048] With reference to Figure 3 And Figure 4 The water inlet assembly 7 comprises a water inlet pipe 701 fixedly connected to the mounting box 1, the water inlet pipe 701 extends into the first mounting cavity 3041, a drain hole 705 is formed in the side wall of the water inlet pipe 701, the water inlet pipe 701 is slidably connected with a sliding rod 702, the top of the sliding rod 702 extends into the water inlet pipe 701 and is fixedly connected with a sealing plate 703, the sliding rod 702 extends into the first mounting cavity 3041 and is fixedly connected with a float ball 704, and a through hole 305 is formed in the side wall of the L-shaped plate 304 and communicates the first mounting cavity 3041 and the second mounting cavity 3042.

[0049] The water inlet pipe 701 is connected with a water source, the annular pipe 901 is in contact with the water in the first mounting cavity 3041 and the second mounting cavity 3042, so that the water in the two mounting cavities is heated at the same time, the water in the first mounting cavity 3041 forms water vapor and flows into the second mounting cavity 3042 through the through hole 305, when the water in the first mounting cavity 3041 evaporates to a certain degree, the float ball 704 descends due to the decrease of the water level, when the float ball 704 descends to a certain degree, the sealing plate 703 slides to the lower side of the drain hole 705, the water in the water inlet pipe 701 is discharged into the second mounting cavity 3042 through the drain hole 705, when the water level in the second mounting cavity 3042 exceeds the through hole 305, the water in the second mounting cavity 3042 flows into the first mounting cavity 3041 to supplement the water in the first mounting cavity 3041.

[0050] The inner wall of the water inlet pipe 701 is fixedly connected with a spring sheet, the position of the spring sheet is lower than the drain hole 705, the sealing plate 703 is a counterweight, under the action of gravity, the water level in the first installation cavity 3041 rises by the force of the spring sheet, when the floating ball 704 drives the sealing plate 703 to rise, the floating ball 704 will be resisted by the spring sheet, only when the buoyancy reaches a certain degree, the floating ball 704 can continue to float by the spring sheet, so that the water can be leveled with the through hole 305, and the water in the first installation cavity 3041 is avoided to be insufficient.

[0051] The floating ball 704 is a solid foam ball.

[0052] The solid foam ball can prevent the floating ball 704 from being squashed due to excessive pressure in the heat preservation box 3, so that the buoyancy of the floating ball 704 is avoided to be reduced.

[0053] It is emphasized that: the sixth pipeline 809 and the exhaust pipe 606 are both provided with a one-way valve, so that the water vapor in the sixth pipeline 809 and the gas in the exhaust pipe 606 can only enter the three-way joint 810, and cannot flow reversely.

[0054] It is emphasized that: the sixth pipeline 809 and the exhaust pipe 606 are both provided with a one-way valve, so that the water vapor in the sixth pipeline 809 and the gas in the exhaust pipe 606 can only enter the three-way joint 810, and cannot flow reversely. The above describes only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A flue gas collection pre-treatment device comprising a mounting box (1), characterized in that, Also include: The filter assembly for filtering dust and tar in the flue gas is arranged at the bottom left of the installation box (1); The cooling assembly arranged at the bottom right of the installation box (1) absorbs the heat of flue gas to generate water vapor by internal water; The air pump (908) for transmitting flue gas is arranged at the top of the cooling assembly; The gas flow meter (4) for detecting gas flow is arranged at the top of the cooling assembly, and the input end of the gas flow meter (4) is connected with the output pipeline of the air pump (908); The gas detector (5) for detecting gas composition is arranged in the installation box (1); The power conversion assembly arranged in the cooling assembly is used for converting the pressure of water vapor into the power of the switching state of the filter assembly and transmitting water vapor to the inside of the filter assembly for automatic cleaning of the filter assembly; The filter assembly includes a filter box (2) fixedly connected in the installation box (1), the filter box (2) is fixedly connected with an installation box (203) for dividing the inside of the filter box (2) into a filter cavity (201) and a cleaning cavity (202), the installation box (203) is rotatably connected with an installation shaft (204), the installation shaft (204) is fixedly connected with an installation disc (205), a sealing groove corresponding to the outer wall of the installation disc (205) is formed in the inner wall of the filter box (2), two symmetrical filter plates (2052) are fixedly connected on the installation disc (205), a sealing strip (2051) is fixedly connected on the installation disc (205), and the sealing strip (2051) is attached to the groove wall and the groove arm of the sealing groove on the side wall of the installation box (203).

2. A flue gas collection pre-treatment device according to claim 1, characterized in that The cooling assembly includes a heat preservation box (3) fixedly connected in the installation box (1) and a plurality of groups of heat dissipation pipes (9) arranged in the heat preservation box (3), wherein the heat preservation box (3) includes an outer box (301) and an inner box (302), a heat insulation cavity (303) is arranged in the inner box (302), and an L plate (304) is fixedly connected in the inner box (302) for dividing the inner box (302) into a first installation cavity (3041) and a second installation cavity (3042).

3. A flue gas collection pre-treatment device according to claim 2, characterised in that, A plurality of groups of the heat dissipation pipes (9) each comprise an annular pipe (901) fixedly connected to the L-shaped plate (304), a plurality of groups of sealing scrapers (902) are slidably connected in the annular pipe (901), the plurality of groups of the sealing scrapers (902) are fixedly connected through an annular rod (903), a discharge pipe (909) is fixedly connected to the bottom of the annular pipe (901), an air inlet pipe (904) is fixedly connected to the lower left end of the annular pipe (901), the input ends of a plurality of groups of the air inlet pipes (904) are fixedly connected to a shunt pipe (208), the input end of the shunt pipe (208) is connected to the air outlet end of a filtering cavity (201) through a first pipeline (207), an air outlet pipe (905) is fixedly connected to the upper right end of the annular pipe (901), the output ends of a plurality of groups of the air outlet pipes (905) are fixedly connected to a converging box (906), the converging box (906) is connected to the input end of an air pump (908) through a seventh pipeline (907).

4. A flue gas collection pre-treatment device according to claim 2, characterized in that The power conversion assembly comprises a mounting pipe (801) fixedly connected to the top of the heat preservation box (3), a fourth pipeline (802) is fixedly connected to the mounting pipe (801) and the second mounting cavity (3042) on the heat preservation box (3), an overflow valve (804) is fixedly connected to the fourth pipeline (802), a piston plate (805) is slidably connected in the mounting pipe (801), a push rod (806) is fixedly connected to the piston plate (805), the push rod (806) extends out of the mounting pipe (801) and is fixedly connected to a rack (807), the mounting shaft (204) extends to the top of the filtering box (2) and is connected to a gear (206) engaged with the rack (807) through a ratchet mechanism, a spring (808) is sleeved on the push rod (806), and the two ends of the spring (808) are respectively abutted against the piston plate (805) and the mounting pipe (801).

5. A flue gas collection pre-treatment device according to claim 4, characterised in that, A shunt plate (8) is fixedly connected in the cleaning cavity (202), a sixth pipeline (809) is fixedly connected to the top of the mounting pipe (801), a three-way joint (810) is fixedly connected to the sixth pipeline (809), and a fifth pipeline (803) connected to the shunt plate (8) is fixedly connected to the output end of the three-way joint (810).

6. A flue gas collection pre-treatment device according to claim 5, characterised in that, The buffer assembly (6) comprises a buffer box (603) fixedly connected in the mounting box (1), a turbine (607) is rotatably connected in the buffer box (603), a converging ring (604) connected to the air outlet end of the buffer box (603) is fixedly connected to the top of the buffer box (603), the converging ring (604) is connected to the input end of the gas detector (5) through a third pipeline (605), a shunt ring (602) connected to the air inlet of the buffer box (603) is fixedly connected to the bottom of the buffer box (603), and the shunt ring (602) is connected to the output end of the gas flow meter (4) through a second pipeline (601).

7. A flue gas collection pre-treatment device according to claim 6, characterised in that, The mounting box (1) is fixedly connected with a wind pipe (610), the air pump (908) is arranged in the wind pipe (610), the wind pipe (610) is fixedly connected with a transmission shaft (608), the transmission shaft (608) extends into the wind pipe (610) and is fixedly connected with a fan blade (609), the transmission shaft (608) extends into the buffer box (603) and is fixedly connected with a turbine (607), and an exhaust end of the wind pipe (610) is fixedly connected with an exhaust pipe (606) connected with a three-way joint (810).

8. A flue gas collection pre-treatment device according to claim 2, characterized in that Further comprising a water inlet assembly (7), the water inlet assembly (7) comprises a water inlet pipe (701) fixedly connected to the mounting box (1), the water inlet pipe (701) extends into the first mounting cavity (3041), a drain hole (705) is arranged on the side wall of the water inlet pipe (701) in the second mounting cavity (3042), a sliding rod (702) is slidably connected to the water inlet pipe (701), a sealing plate (703) is fixedly connected to the top of the sliding rod (702) and extends into the water inlet pipe (701), a floating ball (704) is fixedly connected to the sliding rod (702) and extends into the first mounting cavity (3041), and a through hole (305) is arranged on the side wall of the L-shaped plate (304) and communicates the first mounting cavity (3041) and the second mounting cavity (3042).

9. A flue gas collection pre-treatment device according to claim 8, characterised in that, The floating ball (704) is a solid foam ball.

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