A flue gas dust removal device

Abstract

The present invention provides a flue gas dust removal device, belonging to the technical field of dust removal devices, which includes a bracket, a filter tube, an enclosing component, a filter net, an air inlet pipe, a liquid injection pipe and a spray head. The filter tube is fixedly connected to the bracket, and the filter tube is provided with a plurality of air inlet holes. The enclosing component and the filter tube enclose an air inlet cavity that is arranged around the outside of the filter tube and communicated with the plurality of air inlet holes. The filter net is located in the air inlet cavity, and the filter net is fixedly attached to the filter tube and covers the plurality of air inlet holes. One end of the air inlet pipe is connected to the enclosing component and communicated with the air inlet cavity. The liquid injection pipe includes a fixed section and a spray section. The fixed section penetrates the side wall of the filter tube and is fixedly connected to the filter tube. The spray section is located below the fixed section and is coaxially arranged with the filter tube. The spray head is located inside the filter tube and below the air inlet holes, and the spray head is connected to the lower end of the spray section. The flue gas dust removal device provided by the present invention can avoid the problem that the dust removal effect of the flue gas is poor due to a single dust removal method.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust removal equipment, and more specifically, relates to a flue gas dust removal equipment. Background Art

[0002] In the industrial production of asphalt, concrete, etc., a large amount of flue gas is often generated. Since the flue gas contains more impurities, it will cause environmental pollution if it is directly discharged into the air. Therefore, the flue gas needs to be dusted and purified. At present, the flue gas is generally dusted and purified by spraying liquid on the flue gas. However, the single dust removal method has a poor effect on the dust removal of the flue gas. Summary of the invention

[0003] The object of the present invention is to provide a flue gas dust removal device, aiming to solve the problem that a single dust removal method has a poor dust removal effect on flue gas.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a flue gas dust removal device, including a bracket, a filter tube, an enclosure component, a filter net, an air inlet pipe, an injection pipe and a spray head. The filter tube is vertically arranged and fixedly connected to the bracket, and the side wall of the filter tube is provided with a plurality of air inlet holes, and the plurality of air inlet holes are evenly distributed around the axis of the filter tube. The enclosure component is sleeved outside the filter tube, and the enclosure component and the filter tube form an air inlet cavity that is annularly arranged outside the filter tube and communicated with the plurality of air inlet holes. The filter net is located in the air inlet cavity, and the filter net is fixedly arranged on the filter tube and covers the plurality of air inlet holes. One end of the air inlet pipe is connected to the enclosure component and communicated with the air inlet cavity. The injection pipe is an L-shaped structure, including a horizontally arranged fixed section and a vertically arranged spray section, the fixed section penetrates the side wall of the filter tube and is fixedly connected to the filter tube, and the spray section is located below the fixed section and is coaxially arranged with the filter tube. The spray head is located in the filter tube and below the air inlet, and the spray head is connected to the lower end of the spray section.

[0005] In a possible implementation, the surrounding component includes a first annular plate, a first annular gasket, a first sleeve, a second annular plate, a fixing member, and a first hydraulic cylinder. The first annular plate is sleeved and fixed outside the filter tube. The first annular gasket is sleeved outside the filter tube and fixedly attached to the lower surface of the first annular plate. The first sleeve is coaxially sleeved outside the filter tube and has a gap with the filter tube. The first sleeve is located below the first annular gasket and cooperates with the first annular plate to clamp the first annular gasket. The second annular plate is slidably sleeved outside the filter tube. The second annular plate is located below the first sleeve and is fixedly attached to the first sleeve. The fixing member is fixedly arranged on the side wall of the first sleeve. The cylinder block of the first hydraulic cylinder is connected to the bracket. The piston rod of the first hydraulic cylinder can stretch in the vertical direction and the piston rod of the first hydraulic cylinder is fixedly connected to the fixing member. Wherein, one end of the intake pipe is fixedly connected to the first sleeve.

[0006] In a possible implementation, the flue gas dust removal device further includes a second sleeve, a closing plate, a second annular gasket, and a support shaft. The second sleeve is slidably sleeved outside the filter tube. The second sleeve is located below the second annular plate and is fixedly connected to the second annular plate. The closing plate slidably penetrates through the second sleeve and is located below the filter tube. The second annular gasket is located inside the second sleeve and is fixedly attached to the closing plate. The second annular gasket is circumferentially attached to the inner surface of the second sleeve. The support shaft is vertically arranged. The upper end of the support shaft is located inside the second sleeve and is fixedly connected to the closing plate. Wherein, the bracket has a placement plate located below the support shaft. The placement plate is horizontally arranged and is fixedly connected to the lower end of the support shaft. When the second sleeve moves downward to abut against the placement plate, the closing plate can slidably penetrate into the second annular plate and the upper surface of the closing plate is flush with the upper surface of the second annular plate.

[0007] In a possible implementation, the flue gas dust removal device further includes a third annular plate, a shielding tube, a cover plate, and a fixing shaft. The third annular plate is horizontally arranged and slidably penetrates through the filter tube. The third annular plate is located above the plurality of intake holes. The shielding tube is coaxially penetrated through the filter tube and has a gap with the filter tube. The shielding tube is located below the third annular plate and is fixedly connected to the third annular plate. The lower end of the shielding tube is located below the plurality of intake holes and has a gap with the closing plate. The cover plate is horizontally arranged and is located on the filter tube. The cover plate is provided with an air outlet hole communicating with the inside of the filter tube. There are a plurality of fixing shafts. The fixing shafts are located between the third annular plate and the cover plate. The two ends of the fixing shaft are respectively fixedly connected to the third annular plate and the cover plate.

[0008] In a possible implementation, the flue gas dust removal device further includes a second hydraulic cylinder. The cylinder body of the second hydraulic cylinder is fixedly arranged on the first annular plate, and the piston rod of the second hydraulic cylinder can telescopically move in the vertical direction and is fixedly connected to the cover plate. Wherein, when the second sleeve moves downward to abut against the placing plate, the upward sliding of the third annular plate can enable the shielding pipe to reach a preset position above the first sleeve.

[0009] In a possible implementation, the intake pipe is horizontally arranged, and the flue gas dust removal device further includes a transfer container, a connecting pipe, an opening and closing valve, and a conversion pipe. The transfer container has a transfer cavity, and the transfer container is fixedly connected to the bracket. One end of the connecting pipe is fixedly connected to the transfer container and communicates with the transfer cavity. The opening and closing valve is arranged on the connecting pipe. The conversion pipe is in an L-shaped structure and includes a horizontally arranged first connecting section and a vertically arranged second connecting section. The first connecting section is rotatably sleeved outside the intake pipe, and the second connecting section slidably penetrates the bottom wall of the transfer container so that one end of the conversion pipe located on the second connecting section is located in the transfer cavity. Wherein, when the intake pipe moves downward, the second connecting section can slide out of the bottom wall of the transfer container.

[0010] In a possible implementation, the flue gas dust removal device further includes a rotating ring, a limiting ring, and a connecting shaft. The rotating ring is rotatably sleeved on the intake pipe. There are two limiting rings, which are sleeved and fixed on the intake pipe, and the two limiting rings are attached to the rotating ring from both sides. The two ends of the connecting shaft are respectively fixedly connected to the rotating ring and the conversion pipe.

[0011] In a possible implementation, the flue gas dust removal device further includes a third annular gasket. The third annular gasket is sleeved outside the intake pipe and is located inside the first connecting section, and the third annular gasket is fixedly connected to the intake pipe.

[0012] In a possible implementation, the flue gas dust removal device further includes a fourth annular gasket. The fourth annular gasket is sleeved outside the second connecting section and is fixedly attached to the bottom wall of the transfer container.

[0013] In a possible implementation, the flue gas dust removal device further includes a receiving bucket. The receiving bucket slidably penetrates through the placing plate, and when one end of the conversion pipe located on the second connecting section faces downward, the receiving bucket can receive the liquid flowing out of the second connecting section.

[0014] In the embodiment of the present application, the flue gas enters the intake cavity through the intake pipe, passes through the filter screen, and then enters the filter pipe through a plurality of intake holes. The spraying liquid is injected into the injection pipe and then sprayed downward through the spray head. The flue gas in the filter pipe contacts the spraying liquid during the rising process, thereby removing dust from the flue gas again. The dual dust removal effects of the filter screen and the spraying liquid can avoid the problem that the single dust removal method has a poor dust removal effect on the flue gas. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings 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.

[0016] Figure 1 Structural schematic diagram of a flue gas dust removal device provided by an embodiment of the present invention;

[0017] Figure 2 For Figure 1 Enlarged structural schematic diagram of the partial A in

[0018] Figure 3 For Figure 1 Enlarged structural schematic diagram of the partial B in

[0019] Figure 4 Cross-sectional structural schematic diagram of a flue gas dust removal device provided by an embodiment of the present invention;

[0020] Figure 5 For Figure 4 Enlarged structural schematic diagram of the partial C in

[0021] Figure 6 For Figure 4 Enlarged structural schematic diagram of the partial D in

[0022] Figure 7 For Figure 4 Enlarged structural schematic diagram of the partial E in

[0023] Figure 8 For Figure 4 Enlarged structural schematic diagram of the partial F in

[0024] Figure 9 Structural schematic diagram of the connection between the filter pipe and the filter screen in a flue gas dust removal device provided by an embodiment of the present invention.

[0025] In the figure: 1, bracket; 11, placement plate; 2, filter tube; 21, air inlet; 3, enclosure assembly; 301, air inlet cavity; 31, first annular plate; 32, first annular sealing gasket; 33, first sleeve; 34, second annular plate; 35, fixing member; 36, first hydraulic cylinder; 4, filter screen; 5, air inlet pipe; 6, injection pipe; 61, fixing section; 62, spray section; 7, spray head; 8, second sleeve; 9, closing plate; 10, second annular sealing gasket; 110, support shaft; 1 20. Third annular plate; 130. Shielding tube; 140. Cover plate; 1401. Air outlet; 150. Fixed shaft; 160. Second hydraulic cylinder; 170. Transfer container; 1701. Transfer chamber; 180. Connecting pipe; 190. Opening and closing valve; 20. Conversion tube; 201. First connecting section; 202. Second connecting section; 210. Rotating ring; 220. Limiting ring; 230. Connecting shaft; 240. Third annular gasket; 250. Fourth annular gasket; 260. Receiving barrel. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0028] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] The directions or positional relationships indicated by terms such as “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0031] Please refer to Figure 1 , Figure 4 , Figure 5 , Figure 8 and Figure 9 , and a flue gas dust removal device provided by the present invention will now be described. The flue gas dust removal device includes a support 1, a filter tube 2, an enclosing component 3, a filter net 4, an air inlet pipe 5, a liquid injection pipe 6, and a spray head 7. The filter tube 2 is vertically arranged and fixedly connected to the support 1. A plurality of air inlet holes 21 are provided on the side wall of the filter tube 2, and the plurality of air inlet holes 21 are evenly distributed around the axis of the filter tube 2. The enclosing component 3 is sleeved outside the filter tube 2, and the enclosing component 3 and the filter tube 2 enclose an air inlet cavity 301 that is annularly arranged outside the filter tube 2 and communicates with the plurality of air inlet holes 21. The filter net 4 is located in the air inlet cavity 301, and the filter net 4 is fixedly attached to the filter tube 2 and covers the plurality of air inlet holes 21. One end of the air inlet pipe 5 is connected to the enclosing component 3 and communicates with the air inlet cavity 301. The liquid injection pipe 6 has an L-shaped structure and includes a horizontal fixed section 61 and a vertical spray section 62. The fixed section 61 penetrates the side wall of the filter tube 2 and is fixedly connected to the filter tube 2. The spray section 62 is located below the fixed section 61 and is coaxially arranged with the filter tube 2. The spray head 7 is located inside the filter tube 2 and below the air inlet holes 21, and the spray head 7 is connected to the lower end of the spray section 62.

[0032] For the flue gas dust removal device provided by the present invention, compared with the prior art, flue gas enters the air inlet cavity 301 through the air inlet pipe 5, and after being filtered by the filter net 4, enters the filter tube 2 through the plurality of air inlet holes 21. The spray liquid is injected into the liquid injection pipe 6 and then sprayed downward through the spray head 7. The flue gas in the filter tube 2 contacts the spray liquid during the rising process, thereby performing dust removal on the flue gas again. The dual dust removal effects of the filter net 4 and the spray liquid can avoid the problem of poor dust removal effect of the flue gas by a single dust removal method.

[0033] In this embodiment, the flue gas enters the filter tube 2 through the plurality of air inlet holes 21, which can make the flue gas diffuse more evenly in the air inlet pipe 5, so that it can contact the spray liquid evenly, and thus better perform dust removal on the flue gas.

[0034] In some embodiments, the above-mentioned enclosing component 3 can be adopted such as Figure 1 , Figure 3 , Figure 4 andFigure 5 The structure shown. Refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 , the enclosure component 3 includes a first annular plate 31, a first annular gasket 32, a first sleeve 33, a second annular plate 34, a fixing member 35 and a first hydraulic cylinder 36. The first annular plate 31 is sleeved and fixed outside the filter tube 2. The first annular gasket 32 is sleeved outside the filter tube 2 and fixedly attached to the lower surface of the first annular plate 31. The first sleeve 33 is coaxially sleeved outside the filter tube 2 and has a gap with the filter tube 2. The first sleeve 33 is located below the first annular gasket 32 and cooperates with the first annular plate 31 to clamp the first annular gasket 32. The second annular plate 34 is slidably sleeved outside the filter tube 2. The second annular plate 34 is located below the first sleeve 33 and is fixedly attached to the first sleeve 33. The fixing member 35 is fixedly arranged on the side wall of the first sleeve 33. The cylinder block of the first hydraulic cylinder 36 is connected to the bracket 1. The piston rod of the first hydraulic cylinder 36 can extend and retract in the vertical direction and the piston rod of the first hydraulic cylinder 36 is fixedly connected to the fixing member 35. Wherein, one end of the air inlet pipe 5 is fixedly connected to the first sleeve 33, so as to realize the connection between the air inlet pipe 5 and the enclosure component 3. The first annular gasket 32 can realize the seal between the first annular plate 31 and the first sleeve 33. The impurities filtered by the filter net 4 will fall on the second annular plate 34 and be located inside the first sleeve 33. When the impurities on the second annular plate 34 need to be cleaned, the piston rod of the first hydraulic cylinder 36 drives the second annular plate 34 and the first sleeve 33 to move downward through the fixing member 35. When the first sleeve 33 reaches below the filter tube 2, the impurities on the second annular plate 34 can be cleaned. At this time, the filter net 4 can also be cleaned.

[0035] In this embodiment, two sets of the fixing member 35 and the first hydraulic cylinder 36 in the enclosure component 3 can be provided, and the two sets of the fixing member 35 and the first hydraulic cylinder 36 are symmetrically arranged on both sides of the first sleeve 33.

[0036] In some embodiments, refer to Figure 4 , Figure 5 and Figure 8, the flue gas dust removal device further includes a second sleeve 8, a closing plate 9, a second annular gasket 10 and a support shaft 110. The second sleeve 8 is slidably sleeved outside the filter tube 2. The second sleeve 8 is located below the second annular plate 34 and fixedly connected to the second annular plate 34. The closing plate 9 is slidably inserted into the second sleeve 8 and located below the filter tube 2. The second annular gasket 10 is located inside the second sleeve 8 and fixedly attached to the closing plate 9. The second annular gasket 10 is circumferentially attached to the inner surface of the second sleeve 8. The support shaft 110 is vertically arranged. The upper end of the support shaft 110 is located inside the second sleeve 8 and fixedly connected to the closing plate 9. Among them, the bracket 1 has a placement plate 11 located below the support shaft 110. The placement plate 11 is horizontally arranged and fixedly connected to the lower end of the support shaft 110. When the second sleeve 8 moves downward until it abuts against the placement plate 11, the closing plate 9 can slide into the second annular plate 34 and the upper surface of the closing plate 9 is flush with the upper surface of the second annular plate 34. The closing plate 9 is fixedly arranged on the placement plate 11 through the support shaft 110. The liquid sprayed by the spray head 7 falls on the closing plate 9, and the second annular gasket 10 can prevent the sprayed liquid on the closing plate 9 from falling from inside the second sleeve 8. When the sprayed liquid on the closing plate 9 reaches a certain amount, it is necessary to drain this sprayed liquid. At this time, the piston rod of the first hydraulic cylinder 36 drives the second sleeve 8 to move downward through the second annular plate 34 until the second sleeve 8 abuts against the placement plate 11. During this process, the sprayed liquid on the closing plate 9 gradually enters the first sleeve 33 and is discharged along the intake pipe 5. Since the sprayed liquid on the closing plate 9 contains a large amount of impurities, these impurities precipitate to form sludge, so it is also convenient to clean the sludge on the closing plate 9 at this time.

[0037] In this embodiment, the cylinder block of the first hydraulic cylinder 36 is fixedly arranged on the placement plate 11.

[0038] In some embodiments, see Figure 2, the flue gas dust removal device further includes a third annular plate 120, a shielding pipe 130, a cover plate 140, and a fixed shaft 150. The third annular plate 120 is horizontally arranged and slidably penetrates through the filter pipe 2. The third annular plate 120 is located above the plurality of air inlet holes 21. The shielding pipe 130 coaxially penetrates through the filter pipe 2 and has a gap with the filter pipe 2. The shielding pipe 130 is located below the third annular plate 120 and is fixedly connected to the third annular plate 120. The lower end of the shielding pipe 130 is located below the plurality of air inlet holes 21 and has a gap with the closing plate 9. The cover plate 140 is horizontally arranged and is located on the filter pipe 2. An air outlet hole 1401 communicating with the inside of the filter pipe 2 is provided on the cover plate 140. There are a plurality of fixed shafts 150. The fixed shafts 150 are located between the third annular plate 120 and the cover plate 140. Both ends of the fixed shaft 150 are fixedly connected to the third annular plate 120 and the cover plate 140 respectively. A certain amount of water is injected into the second sleeve 8 so that the water on the closing plate 9 floods the lower end of the shielding pipe 130. The flue gas entering the filter pipe 2 moves downward along the gap between the second sleeve 8 and the shielding pipe 130, moves upward along the shielding pipe 130 after being washed by the water on the closing plate 9, and then is sprayed by the spraying liquid, and finally flows out from the air outlet hole 1401 on the cover plate 140. In this way, the purification effect of the flue gas can be further improved.

[0039] In some embodiments, referring to Figure 1 and Figure 4 , the flue gas dust removal device further includes a second hydraulic cylinder 160. The cylinder body of the second hydraulic cylinder 160 is fixedly arranged on the first annular plate 31. The piston rod of the second hydraulic cylinder 160 can stretch and contract in the vertical direction and is fixedly connected to the cover plate 140. Wherein, when the second sleeve 8 moves downward to abut against the placement plate 11, the upward sliding of the third annular plate 120 can enable the shielding pipe 130 to reach a preset position above the first sleeve 33, so as to facilitate the cleaning of the sludge on the closing plate 9. Since the cover plate 140 is fixedly connected to the third annular plate 120 through the fixed shaft 150, the piston rod of the second hydraulic cylinder 160 can drive the shielding pipe 130 fixedly connected to the third annular plate 120 to move upward.

[0040] In this embodiment, two second hydraulic cylinders 160 can be provided, and the two second hydraulic cylinders 160 are symmetrically arranged on both sides of the filter pipe 2.

[0041] In some embodiments, referring to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7, the intake pipe 5 is horizontally arranged. The flue gas dust removal device further includes a transfer container 170, a connecting pipe 180, an opening and closing valve 190, and a conversion pipe 20. The transfer container 170 has a transfer chamber 1701, and the transfer container 170 is fixedly connected to the support 1. One end of the connecting pipe 180 is fixedly connected to the transfer container 170 and communicates with the transfer chamber 1701. The opening and closing valve 190 is arranged on the connecting pipe 180. The conversion pipe 20 is in an L-shaped structure, including a horizontally arranged first connecting section 201 and a vertically arranged second connecting section 202. The first connecting section 201 is rotatably sleeved outside the intake pipe 5, and the second connecting section 202 slidably penetrates the bottom wall of the transfer container 170, so that one end of the conversion pipe 20 located on the second connecting section 202 is located in the transfer chamber 1701. Wherein, when the intake pipe 5 moves downward, the second connecting section 202 can slide out of the bottom wall of the transfer container 170. The other end of the connecting pipe 180 is used to communicate with the smoke outlet of the device generating flue gas, so that the flue gas can enter the intake pipe 5 through the connecting pipe 180, the transfer chamber 1701, and the conversion pipe 20. When the first sleeve 33 moves downward, the intake pipe 5 will drive the conversion pipe 20 to move downward, and the second connecting section 202 will slide out of the bottom wall of the transfer container 170, and then the first connecting section 201 will rotate, so that one end of the conversion pipe 20 located on the second connecting section 202 is downward. In this way, the spraying liquid flowing out of the intake pipe 5 can enter the conversion pipe 20 and then flow downward from the second connecting section 202.

[0042] Further, two of these flue gas dust removal devices can be correspondingly arranged for the device generating flue gas in industrial production, and the smoke outlet of the device generating flue gas can be communicated with the two connecting pipes 180 through a three-way pipeline. When one of the flue gas dust removal devices needs to handle the impurities on the second annular plate 34 and the spraying liquid on the closing plate 9, the opening and closing valve 190 in this flue gas dust removal device is closed, and the opening and closing valve 190 in the other flue gas dust removal device is opened.

[0043] In some embodiments, referring to Figure 2 , the flue gas dust removal device further includes a rotating ring 210, a limiting ring 220, and a connecting shaft 230. The rotating ring 210 is rotatably sleeved on the intake pipe 5. There are two limiting rings 220, and the limiting rings 220 are sleeved and fixed on the intake pipe 5, and the two limiting rings 220 are attached to the rotating ring 210 from both sides. The two ends of the connecting shaft 230 are respectively fixedly connected to the rotating ring 210 and the conversion pipe 20. The rotating ring 210 can rotate with the first connecting section 201. When the second connecting section 202 slides out of the bottom wall of the transfer container 170, through the limitation of the rotating ring 210 by the two limiting rings 220, it can prevent the first connecting section 201 from sliding off the intake pipe 5.

[0044] In some embodiments, referring to Figure 6, the flue gas dust removal device further includes a third annular gasket 240. The third annular gasket 240 is sleeved outside the intake pipe 5 and located within the first connection section 201, and the third annular gasket 240 is fixedly connected to the intake pipe 5. The third annular gasket 240 can ensure the seal between the first connection section 201 and the intake pipe 5.

[0045] In some embodiments, referring to Figure 7 , the flue gas dust removal device further includes a fourth annular gasket 250. The fourth annular gasket 250 is sleeved outside the second connection section 202 and is fixedly attached to the bottom wall of the transfer container 170. The fourth annular gasket 250 can ensure the seal between the second connection section 202 and the bottom wall of the transfer container 170.

[0046] In some embodiments, referring to Figure 4 , the flue gas dust removal device further includes a receiving bucket 260. The receiving bucket 260 is slidably inserted through the placement plate 11. When one end of the conversion pipe 20 located on the second connection section 202 faces downward, the receiving bucket 260 can receive the liquid flowing out of the second connection section 202, that is, receive the spraying liquid flowing out of the second connection section 202. The placement plate 11 can limit the receiving bucket 260.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flue gas dust removal device, characterized in that, Comprising: A bracket; A filter tube, vertically arranged and fixedly connected to the bracket, with a plurality of air inlet holes provided on the side wall of the filter tube, and the plurality of air inlet holes are evenly distributed around the axis of the filter tube; A surrounding structure assembly, sleeved outside the filter tube, and the surrounding structure assembly and the filter tube form an air inlet cavity that is annularly arranged outside the filter tube and communicates with the plurality of air inlet holes; A filter net, located in the air inlet cavity, and the filter net is fixedly attached to the filter tube and covers the plurality of air inlet holes; An air inlet pipe, one end of which is connected to the surrounding structure assembly and communicates with the air inlet cavity; A liquid injection pipe, having an L-shaped structure, including a horizontally arranged fixed section and a vertically arranged spraying section, the fixed section penetrates the side wall of the filter tube and is fixedly connected to the filter tube, and the spraying section is located below the fixed section and is coaxially arranged with the filter tube; And A spray head, located inside the filter tube and below the air inlet holes, and the spray head is connected to the lower end of the spraying section; The surrounding structure assembly includes: A first annular plate, sleeved and fixed outside the filter tube; A first annular gasket, sleeved outside the filter tube and fixedly attached to the lower surface of the first annular plate; A first sleeve, coaxially sleeved outside the filter tube and having a gap with the filter tube, the first sleeve is located below the first annular gasket and cooperates with the first annular plate to clamp the first annular gasket; A second annular plate, slidably sleeved outside the filter tube, the second annular plate is located below the first sleeve and is fixedly attached to the first sleeve; A fixing member, fixedly arranged on the side wall of the first sleeve; A first hydraulic cylinder, the cylinder body of which is connected to the bracket, the piston rod of the first hydraulic cylinder can extend and retract in the vertical direction, and the piston rod of the first hydraulic cylinder is fixedly connected to the fixing member Wherein, one end of the air inlet pipe is fixedly connected to the first sleeve; The flue gas dust removal device further includes: A second sleeve, slidably sleeved outside the filter tube, the second sleeve is located below the second annular plate and is fixedly connected to the second annular plate; A closing plate, slidably penetrating inside the second sleeve and located below the filter tube; A second annular gasket, located inside the second sleeve and fixedly attached to the closing plate, and the second annular gasket is circumferentially attached to the inner surface of the second sleeve; A support shaft, vertically arranged, the upper end of the support shaft is located inside the second sleeve and is fixedly connected to the closing plate; Wherein, the bracket has a placement plate located below the support shaft, the placement plate is horizontally arranged and fixedly connected to the lower end of the support shaft, when the second sleeve moves downward to abut against the placement plate, the closing plate can slidably penetrate into the second annular plate and the upper surface of the closing plate is flush with the upper surface of the second annular plate.

2. The flue gas dust removal device according to claim 1, characterized in that, It further includes: A third annular plate, horizontally arranged and slidably penetrating inside the filter tube, the third annular plate is located above the plurality of air inlet holes; The shielding tube is coaxially disposed inside the filter tube and has a gap with the filter tube. The shielding tube is located below the third annular plate and fixedly connected to the third annular plate. The lower end of the shielding tube is located below the plurality of air inlet holes and has a gap with the closing plate; The cover plate is horizontally arranged and located on the filter tube. An air outlet hole communicating with the inside of the filter tube is provided on the cover plate; There are a plurality of fixed shafts located between the third annular plate and the cover plate. Both ends of the fixed shaft are fixedly connected to the third annular plate and the cover plate respectively.

3. A flue gas dust removal device according to claim 2, characterized in that, It further includes: The second hydraulic cylinder, the cylinder body of which is fixedly arranged on the first annular plate. The piston rod of the second hydraulic cylinder can telescopically move in the vertical direction and is fixedly connected to the cover plate; Wherein, when the second sleeve moves downward to abut against the placement plate, the upward sliding of the third annular plate can enable the shielding tube to reach a preset position above the first sleeve.

4. A flue gas dust removal device according to claim 2, characterized in that, The intake pipe is horizontally arranged. The flue gas dust removal device further includes: The transfer container has a transfer chamber and is fixedly connected to the bracket; The connecting pipe, one end of which is fixedly connected to the transfer container and communicates with the transfer chamber; The on-off valve is arranged on the connecting pipe; The conversion pipe is in an L-shaped structure and includes a horizontally arranged first connecting section and a vertically arranged second connecting section. The first connecting section is rotatably sleeved outside the intake pipe, and the second connecting section slidably penetrates the bottom wall of the transfer container so that one end of the conversion pipe located on the second connecting section is located inside the transfer chamber; Wherein, when the intake pipe moves downward, the second connecting section can slide out of the bottom wall of the transfer container.

5. A flue gas dust removal device according to claim 4, characterized in that, It further includes: The rotating ring is rotatably sleeved on the intake pipe; There are two limiting rings sleeved and fixed on the intake pipe, and the two limiting rings are attached to the rotating ring from both sides; The connecting shaft is fixedly connected to the rotating ring and the conversion pipe at both ends respectively.

6. A flue gas dust removal device according to claim 4, characterized in that, It further includes: The third annular gasket is sleeved outside the intake pipe and located inside the first connecting section, and the third annular gasket is fixedly connected to the intake pipe.

7. A flue gas dust removal device according to claim 4, characterized in that, It further includes: The fourth annular gasket is sleeved outside the second connecting section and is fixedly attached to the bottom wall of the transfer container.

8. A flue gas dust removal device according to claim 5, characterized in that, It further includes: The receiving bucket is slidably penetrated in the placement plate. When one end of the conversion pipe located on the second connecting section faces downward, the receiving bucket can receive the liquid flowing out of the second connecting section.

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