A U-shaped separator for handling large dust particles in double-drum boilers

Abstract

The present invention discloses a U-shaped separator for treating large dust particles in a double-drum boiler, and relates to the technical field of flue gas dust removal. In the present invention, a smoke filter assembly and a flow direction conversion assembly are respectively installed inside the smoke guide assembly, a smoke inlet connected to the smoke filter chamber is provided at the bottom of the smoke filter chamber, the smoke filter chamber and the flow direction conversion chamber are connected through a closed channel, the smoke outlet pipe and the flow direction conversion chamber are connected, a dust filter cloth reel is rotatably arranged inside the flow direction conversion chamber, and a dust filter cloth is wound between the dust filter cloth reel and the smoke outlet. In the present invention, after the smoke is dust filtered in the first smoke treatment mechanism, it is transported to the second smoke treatment mechanism through the smoke delivery pipe for another smoke dust filtering treatment, so that the multi-stage treatment of the smoke can be achieved through multiple smoke treatment mechanisms, and finally the smoke enters the water tank from the second smoke exhaust pipe, thereby ensuring the removal effect of large dust particles in the boiler smoke.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas dust removal, and in particular relates to a U-shaped separator for processing large-particle dust in a double-drum boiler. Background Art

[0002] A thermal power plant is a factory that uses combustibles as fuel to produce electricity. Its basic production process is that when the fuel burns, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy. The prime mover is usually a steam engine or a gas turbine. In some smaller power stations, internal combustion engines may also be used. They all generate electricity by utilizing the pressure drop in the process of high-temperature, high-pressure steam or gas passing through a turbine to become low-pressure air or condensed water.

[0003] Boilers are needed in the process of generating electricity. Double-drum boilers are a commonly used type of boiler. Each drum corresponds to a smoke exhaust pipe. During the use of the boiler, flue gas containing large particles of dust will be generated. This dusty flue gas needs to be treated before it can be discharged into the environment, otherwise it will inevitably cause dust pollution in the environment.

[0004] However, dust filter cloth is generally used when treating dust in boiler flue gas. After using the dust filter cloth for a period of time, it needs to be cleaned to ensure the dust filtering performance of the dust filter cloth. The general dust filter cloth cleaning method requires the dust filter cloth to be disassembled and reinstalled after cleaning before it can continue to be used for filtering large particles of dust in flue gas. It is impossible to clean the dust on the surface of the dust filter cloth during normal use. To this end, we provide a U-shaped separator for large particle dust treatment in double-drum boilers to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a U-shaped separator for treating large particles of dust in a double-drum boiler, which solves the problems in the above-mentioned background technology through the specific structural design of the smoke treatment mechanism, the second sealing plate, the boiler butt pipe, the first smoke exhaust pipe, the smoke conveying pipe, the second smoke exhaust pipe and the solenoid valve.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a U-shaped separator for treating large-particle dust in a double-drum boiler, comprising a smoke treatment mechanism; wherein the smoke treatment mechanism comprises a smoke guide assembly, wherein a smoke filter assembly and a flow direction conversion assembly are respectively installed inside the smoke guide assembly, wherein the smoke filter assembly is used to filter particulate dust in boiler smoke, and the flow direction conversion assembly is used to convert the flow direction of smoke between different media; the smoke guide assembly comprises a smoke filter chamber, wherein a smoke inlet connected to the smoke filter chamber is provided at the bottom of the smoke filter chamber, and the boiler smoke is transported to the inside of the smoke filter chamber through the smoke inlet; a flow direction conversion chamber, wherein the flow direction conversion chamber is arranged at one side of the smoke filter chamber, and the smoke filter chamber and the flow direction conversion chamber are connected by a closed channel; and a smoke outlet pipe, wherein the smoke outlet pipe is fixedly installed at one side of the flow direction conversion chamber, and the smoke outlet pipe is connected to the flow direction conversion chamber, and a dust filter cloth winding roller is rotatably arranged inside the flow direction conversion chamber.

[0008] The smoke filter assembly comprises a smoke outlet portion, which is fixedly installed in the smoke filter chamber, and a dust cloth is wound between the dust filter cloth take-up roller and the smoke filter chamber, so that the smoke filtered by the dust cloth enters the smoke filter chamber and flows upward to be discharged from the smoke filter chamber; and a dust scraping plate, which is installed in the smoke filter chamber and symmetrically installed on both sides of the smoke outlet portion, and the dust scraping ends of the dust scraping plates press against the dust filter cloth so that the dust filter cloth is tightly attached to the peripheral side of the smoke outlet portion; the flow direction conversion assembly comprises a sealed piston plate, The closing piston plate fits tightly inside the closed channel. When the closed piston plate blocks the closed channel, the smoke entering the smoke filter chamber through the smoke inlet is discharged along the smoke outlet part. When the closed piston plate is separated from the closed channel, the smoke entering the smoke filter chamber through the smoke inlet is discharged along the smoke outlet pipe; and a dust filter cloth fixing roller, which is fixedly mounted on one side of the closed piston plate and moves synchronously with the closed piston plate, and the movable end of the dust filter cloth is wrapped around the smoke outlet part and fixed on the dust filter cloth fixing roller after passing through the closed piston plate.

[0009] The present invention is further configured such that the smoke guide assembly also includes a smoke guide box, a chamber partition plate is fixedly arranged inside the smoke guide box, a closed guide plate is fixedly arranged on one side of the chamber partition plate, the closed channel is opened on the chamber partition plate, and the smoke filter chamber and the flow direction conversion chamber are separated by the chamber partition plate; and a limit bar, the limit bar is fixedly arranged on the inner wall of the smoke guide box, and the limit bar is located inside the flow direction conversion chamber, a winding control motor is fixedly installed on the bottom of the smoke guide box, and the output shaft of the winding control motor is fixedly installed on the bottom of the dust filter cloth winding roller.

[0010] The present invention is further configured as follows: the smoke guide assembly also includes a smoke inlet pipe, which is fixedly arranged at the bottom of the smoke guide box, a smoke flow opening is opened on the side surface of the smoke inlet pipe, and the smoke inlet pipe is arranged below the smoke dust removal chamber; a hollow guide portion, which is fixedly installed at the bottom of the smoke guide box and is coaxially arranged with the smoke inlet pipe, and the smoke dust removal chamber and the hollow guide portion are connected via a smoke input port; and a U-shaped guide pipe, which is fixedly installed at the bottom of the smoke inlet pipe and the two are connected, one end of the smoke outlet pipe is fixedly installed on the outer wall of the smoke guide box, and the other end of the smoke outlet pipe is fixedly installed on the side surface of the U-shaped guide pipe, and the smoke outlet pipe is connected to the U-shaped guide pipe, and an arc-shaped partition located between the smoke inlet pipe and the smoke outlet pipe is fixed inside the U-shaped guide pipe.

[0011] The present invention is further configured as follows: the flow direction conversion assembly also includes a closed movable plate, which is slidably arranged inside the flow direction conversion chamber, and the closed movable plate is slidably connected to the closed guide plate, and the closed piston plate is fixedly mounted on the side of the closed movable plate close to the closed passage; a first sealing plate, which is fitted on the side of the opening of the smoke guide box and the two are connected by fasteners, a first elastic member is fixedly arranged on one side of the first sealing plate, and two second sealing plates are symmetrically installed on the top of the smoke guide box; and a horizontal mounting seat, which is fixedly arranged on the side of the closed movable plate away from the closed piston plate, the dust filter cloth fixing roller is fixedly mounted on the top of the horizontal mounting seat, a first mounting plate connected to the first elastic member is fixedly arranged on one side of the horizontal mounting seat, and a first cloth threading seam and a second cloth threading seam that penetrate the closed piston plate are provided on the surface of the closed movable plate.

[0012] The present invention is further configured such that the smoke outlet portion includes a hollow smoke guide tube fixedly installed inside the smoke and dust filtering chamber, a plurality of smoke outlets are provided on the peripheral side of the hollow smoke guide tube, a smoke exhaust butt joint tube connected to the hollow smoke guide tube is fixedly installed on the top of the hollow smoke guide tube, the dust filter cloth is inserted between the first cloth threading seam and the second cloth threading seam, and the dust filter cloth is tightly attached to the peripheral side of the hollow smoke guide tube.

[0013] The present invention is further configured such that a second mounting plate is fixedly provided on one side of the dust scraping plate, a second elastic member connected to the second mounting plate is fixedly provided on the inner wall of the smoke guide box, a transmission rack is fixedly provided on the side of the second mounting plate away from the second elastic member, a rotating rod is rotatably provided on the smoke guide box, a transmission gear is fixedly provided on one end of the rotating rod, and the transmission gear is meshed with the transmission racks on its upper and lower sides.

[0014] The present invention is further configured to include a boiler butt joint pipe, wherein the two smoke inlet ends of the boiler butt joint pipe are respectively installed on the smoke exhaust pipes of the two drums of the boiler, and the smoke exhaust end of the boiler butt joint pipe is installed on the smoke inlet end of the corresponding U-shaped guide pipe, and the smoke exhaust end of the U-shaped guide pipe is installed with a first smoke exhaust pipe extending downward.

[0015] The present invention is further configured to include a smoke conveying pipe and a second smoke exhaust pipe, wherein the smoke conveying pipe is arranged between two adjacent smoke dust treatment mechanisms; wherein the smoke inlet end of the smoke conveying pipe is installed on the top of the corresponding smoke exhaust butt joint pipe, the smoke exhaust end of the smoke conveying pipe is installed on the smoke inlet end of the corresponding U-shaped guide pipe, the smoke inlet end of the second smoke exhaust pipe is installed on the top of the corresponding smoke exhaust butt joint pipe, and solenoid valves are installed on both the smoke conveying pipe and the second smoke exhaust pipe.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention inserts the lower ports of the first smoke exhaust pipe and the second smoke exhaust pipe under the water surface in the water tank. In the initial state, the solenoid valves are all in the open state. After the smoke is filtered in the first smoke dust treatment mechanism, it is transported to the second smoke dust treatment mechanism through the smoke conveying pipe for another smoke dust filtering treatment. In this way, multi-stage treatment of the smoke can be achieved through multiple smoke dust treatment mechanisms. The smoke that has been filtered by the last smoke dust treatment mechanism enters the water tank through the second smoke exhaust pipe, and the dust in the smoke is absorbed and removed by the water in the water tank, thereby ensuring the removal effect of large particles of dust in the boiler smoke.

[0018] 2. The present invention adjusts the dust scraper plate to press against the dust filter cloth so that the dust filter cloth is tightly fitted to the surface of the smoke outlet, and then controls the dust filter cloth to rotate by the winding control motor so that the dust filter cloth is gradually wound up on the dust filter cloth winding roller. Since the movable end of the dust filter cloth is fixed to the dust filter cloth fixing roller, the dust filter cloth fixing roller is driven to move synchronously in the process of controlling the traction movement of the dust filter cloth until the closed movable plate that moves synchronously with the dust filter cloth fixing roller is tightly fitted into the chamber partition plate. At this time, the closed piston plate is tightly fitted into the closed channel to achieve the sealing of the closed channel, and the first elastic member is in a stretched state. In this way, the dust filter cloth can be tightly attached to the peripheral side of the hollow smoke guide tube through the pulling force on the dust filter cloth and the pressing effect of the dust scraper plate on the dust filter cloth.

[0019] The dust filter element is then pulled back to its original position by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter by the ash scraper plate, and the dust is then removed from the filter

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a U-shaped separator for handling large particle dust in a double-drum boiler.

[0023] Figure 2 It is a structural schematic diagram of the smoke treatment mechanism in the present invention.

[0024] Figure 3 for Figure 2 Schematic diagram of part of the structure.

[0025] Figure 4 for Figure 3 Top view of the structure.

[0026] Figure 5 It is a schematic diagram of the structure of the smoke conveying pipe in the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the smoke guide assembly in the present invention.

[0028] Figure 7 for Figure 6 The structural front view.

[0029] Figure 8 for Figure 6Top view of the structure.

[0030] Fig. 9 It is a schematic diagram of the structure of the smoke filter assembly in the present invention.

[0031] Fig.10 for Fig. 9 Schematic diagram of part of the structure.

[0032] Fig.11 It is a schematic diagram of the structure of the flow direction conversion component in the present invention.

[0033] Fig.12 for Fig.11 The structural front view.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1-smoke dust treatment mechanism, 2-smoke guide assembly, 201-smoke dust removal chamber, 202-smoke inlet, 203-flow conversion chamber, 204-enclosed channel, 205-smoke outlet pipe, 206-dust filter cloth winding roller, 207-smoke guide box, 208-chamber partition plate, 209-enclosed guide plate, 210-limiting strip, 211-winding control motor, 212-smoke inlet pipe, 213-hollow guide part, 214-U-shaped guide pipe, 3-smoke dust removal assembly, 301-dust filter cloth, 302-ash scraping plate, 303-hollow smoke guide tube, 304-smoke outlet , 305-smoke exhaust butt joint, 306-second mounting plate, 307-second elastic member, 308-transmission rack, 309-rotating rod, 310-transmission gear, 4-flow direction conversion assembly, 401-sealed piston plate, 402-dust filter cloth fixing roller, 403-sealed moving plate, 404-first sealing plate, 405-first elastic member, 406-horizontal mounting seat, 407-first mounting plate, 408-first cloth threading seam, 409-second cloth threading seam, 5-second sealing plate, 6-boiler butt joint, 7-first smoke exhaust pipe, 8-smoke conveying pipe, 9-second smoke exhaust pipe, 10-solenoid valve. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] For specific embodiment 1, please refer to Figure 1-12The present invention is a U-shaped separator for treating large dust particles in a double-drum boiler, comprising a smoke treatment mechanism 1; wherein the smoke treatment mechanism 1 comprises a smoke guide assembly 2, wherein a smoke filter assembly 3 and a flow direction conversion assembly 4 are respectively installed inside the smoke guide assembly 2, wherein the smoke filter assembly 3 is used to filter the dust particles in the boiler smoke, and the flow direction conversion assembly 4 is used to convert the flow direction of the smoke between different media;

[0038] The smoke guide assembly 2 includes a smoke filter chamber 201, a flow conversion chamber 203 and a smoke outlet pipe 205; a smoke inlet 202 connected to the smoke filter chamber 201 is provided at the bottom of the smoke filter chamber 201, and the boiler smoke is transported to the inside of the smoke filter chamber 201 through the smoke inlet 202; the flow conversion chamber 203 is arranged on one side of the smoke filter chamber 201, and the smoke filter chamber 201 and the flow conversion chamber 203 are connected through a closed channel 204; the smoke outlet pipe 205 is fixedly installed on one side of the flow conversion chamber 203, and the smoke outlet pipe 205 is connected to the flow conversion chamber 203, and a dust filter cloth winding roller 206 is rotatably arranged inside the flow conversion chamber 203;

[0039] The smoke dust filter assembly 3 includes a smoke outlet portion and a dust scraping plate 302; the smoke outlet portion is fixedly installed inside the smoke dust filter chamber 201, and a dust filter cloth 301 is wound between the dust filter cloth winding roller 206 and the smoke outlet portion, and the smoke filtered by the dust filter cloth 301 enters the smoke outlet portion and flows upward to be discharged from the smoke dust filter chamber 201; the dust scraping plate 302 is installed inside the smoke dust filter chamber 201, and the dust scraping plate 302 is symmetrically installed on both sides of the smoke outlet portion, and the dust scraping end of the dust scraping plate 302 presses the dust filter cloth 301 so that the dust filter cloth 301 is closely attached to the peripheral side of the smoke outlet portion;

[0040] The flow direction conversion component 4 includes a closed piston plate 401 and a dust filter cloth fixing roller 402; the closed piston plate 401 is tightly fitted inside the closed channel 204. When the closed piston plate 401 blocks the closed channel 204, the smoke entering the smoke filter chamber 201 through the smoke inlet 202 is discharged along the smoke outlet part. When the closed piston plate 401 is separated from the closed channel 204, the smoke entering the smoke filter chamber 201 through the smoke inlet 202 is discharged along the smoke outlet pipe 205; the dust filter cloth fixing roller 402 is fixedly installed on one side of the closed piston plate 401, and the dust filter cloth fixing roller 402 moves synchronously with the closed piston plate 401, and the movable end of the dust filter cloth 301 is wrapped around the smoke outlet part and fixed on the dust filter cloth fixing roller 402 after passing through the closed piston plate 401.

[0041] In this embodiment of the present invention, the smoke guide assembly 2 also includes a smoke guide box 207 and a limit strip 210; a chamber partition plate 208 is fixedly arranged inside the smoke guide box 207, and a closed guide plate 209 is fixedly arranged on one side of the chamber partition plate 208, and the closed channel 204 is opened on the chamber partition plate 208, and the smoke filter chamber 201 and the flow direction conversion chamber 203 are separated by the chamber partition plate 208; the limit strip 210 is fixedly arranged on the inner wall of the smoke guide box 207, and the limit strip 210 is located inside the flow direction conversion chamber 203, and the smoke A winding control motor 211 is fixedly installed at the bottom of the guide box 207, and the output shaft of the winding control motor 211 is fixedly installed at the bottom of the dust filter cloth winding roller 206. Through this structural design, when the winding control motor 211 is started to control the dust filter cloth winding roller 206 to rotate, the dust filter cloth 301 can be wound and released on the dust filter cloth winding roller 206. Since the movable end of the dust filter cloth 301 is fixed on the dust filter cloth fixed roller 402, the closed piston plate 401 can be driven to move synchronously in the process of controlling the traction movement of the dust filter cloth 301.

[0042] In this embodiment of the present invention, the smoke guide assembly 2 further includes a smoke inlet pipe 212, a hollow guide portion 213 and a U-shaped guide pipe 214; the smoke inlet pipe 212 is fixedly arranged at the bottom of the smoke guide box 207, and smoke flow openings are provided on the sides of the smoke inlet pipe 212, and the smoke inlet pipe 212 is arranged below the smoke dust removal chamber 201; the hollow guide portion 213 is fixedly installed at the bottom of the smoke guide box 207 and is coaxially arranged with the smoke inlet pipe 212, and the smoke dust removal chamber 201 and the hollow guide portion 213 are connected through the smoke input port 202;

[0043] The U-shaped guide pipe 214 is fixedly installed at the bottom of the smoke inlet pipe 212 and the two are connected. One end of the smoke outlet pipe 205 is fixedly installed on the outer wall of the smoke guide box 207, and the other end of the smoke outlet pipe 205 is fixedly installed on the side surface of the U-shaped guide pipe 214, and the smoke outlet pipe 205 is connected to the U-shaped guide pipe 214. An arc-shaped partition is fixed inside the U-shaped guide pipe 214 between the smoke inlet pipe 212 and the smoke outlet pipe 205 to ensure that the smoke entering the U-shaped guide pipe 214 can only flow upward along the smoke inlet pipe 212 into the smoke dust filtering chamber 201, and cannot directly enter the smoke outlet pipe 205 through the U-shaped guide pipe 214.

[0044] In this embodiment of the present invention, the flow direction conversion assembly 4 further includes a sealed moving plate 403, a first sealing plate 404 and a horizontal mounting seat 406; the sealed moving plate 403 is slidably disposed inside the flow direction conversion chamber 203, and the sealed moving plate 403 is slidably connected to the sealed guide plate 209 (such as Figure 4As shown in the figure, the sealed piston plate 401 is fixedly mounted on the side of the sealed moving plate 403 close to the sealed channel 204; the first sealing plate 404 is fitted on the opening side of the smoke guide box 207 and the two are connected by fasteners, a first elastic member 405 is fixedly mounted on one side of the first sealing plate 404, and two second sealing plates 5 are symmetrically mounted on the top of the smoke guide box 207; a horizontal mounting seat 406 is fixedly mounted on the side of the sealed moving plate 403 away from the sealed piston plate 401, and a dust filter cloth fixing roller 402 is fixedly mounted on the top of the horizontal mounting seat 406, and the horizontal mounting seat 4 06, a first mounting plate 407 connected to the first elastic member 405 is fixedly provided on one side, and a first cloth threading seam 408 and a second cloth threading seam 409 penetrating the closed piston plate 401 are provided on the surface of the closed movable plate 403; in the initial state, the closed piston plate 401 is separated from the closed passage 204, at which time the first mounting plate 407 is attached to the limiting strip 210, the first elastic member 405 is in a natural state, and the smoke outlet pipe 205 is in a connected state with the closed passage 204 (i.e., the smoke outlet pipe 205 is located on the left side of the closed movable plate 403, as shown in FIG. Figure 4 As shown in the figure, the movable end of the dust filter cloth 301 rolled up and wound on the dust filter cloth winding roller 206 is attached to the smoke outlet portion after passing through the first cloth threading slit 408, and is fixed on the dust filter cloth fixing roller 402 after passing through the second cloth threading slit 409.

[0045] In this embodiment of the present invention, the smoke outlet portion includes a hollow smoke guide tube 303 fixedly installed inside the smoke filter chamber 201, a plurality of smoke outlets 304 are opened on the side of the hollow smoke guide tube 303, a smoke exhaust butt pipe 305 connected to the hollow smoke guide tube 303 is fixedly installed on the top of the hollow smoke guide tube 303, and the dust filter cloth 301 is inserted between the first cloth threading seam 408 and the second cloth threading seam 409, and the dust filter cloth 301 is closely attached to the side of the hollow smoke guide tube 303;

[0046] A second mounting plate 306 is fixedly provided on one side of the dust scraping plate 302, a second elastic member 307 connected to the second mounting plate 306 is fixedly provided on the inner wall of the smoke guide box 207, a transmission rack 308 is fixedly provided on the side of the second mounting plate 306 away from the second elastic member 307, a rotating rod 309 is rotatably provided on the smoke guide box 207, a transmission gear 310 is fixedly provided on one end of the rotating rod 309, and the transmission gear 310 is meshed with the transmission racks 308 on both sides thereof; in the initial state, the dust scraping plate 302 is pressed against the peripheral side of the hollow smoke guide tube 303 under the elastic force of the second elastic member 307, and the transmission gear 310 drives the two transmission racks 308 to gradually move away from each other by rotating the rotating rod 309, thereby achieving The two dust scraping plates 302 are now separated from the hollow smoke guide tube 303. After the dust filter cloth 301 is wrapped and attached to the side surface of the hollow smoke guide tube 303, the external force applied to the rotating rod 309 is gradually released and the elastic restoring force of the second elastic member 307 is used to make the two dust scraping plates 302 press against the dust filter cloth 301, thereby achieving the attachment of the dust filter cloth 301 to the side surface of the hollow smoke guide tube 303 through the dust scraping plates 302. At this time, a section of the dust filter cloth 301 between the two dust scraping plates 302 is tightly attached to the surface of the smoke outlet 304, thereby ensuring that the smoke in the smoke filter chamber 201 is filtered out of large particles of dust through the dust filter cloth 301 and then enters the hollow smoke guide tube 303, and is then discharged from the top of the smoke exhaust butt pipe 305.

[0047] The specific working principle of this embodiment is as follows: after the dust scraping plate 302 is adjusted to press against the dust filter cloth 301, so that the dust filter cloth 301 is tightly attached to the surface of the smoke outlet 304, the dust filter cloth reeling roller 206 is controlled to rotate by the reeling control motor 211, so that the dust filter cloth 301 is gradually reeled on the dust filter cloth reeling roller 206. Since the movable end of the dust filter cloth 301 is fixed on the dust filter cloth fixed roller 402, the dust filter cloth 301 is driven to move in the process of controlling the traction of the dust filter cloth 301. The roller 402 moves synchronously until the closed movable plate 403 that moves synchronously with the dust filter cloth fixed roller 402 is tightly attached to the chamber partition plate 208. At this time, the closed piston plate 401 is tightly fitted into the closed channel 204 to achieve the blocking of the closed channel 204. The first elastic member 405 is in a stretched state. In this way, the dust filter cloth 301 can be tightly attached to the side surface of the hollow smoke guide tube 303 through the pulling force on the dust filter cloth 301 and the pressing force on the dust filter cloth 301 by the dust scraping plate 302.

[0048] The flue gas generated during the use of the boiler enters the flue gas inlet end of the U-shaped guide pipe 214, and then enters the hollow guide part 213 through the flue gas flow port on the flue gas inlet pipe 212. The flue gas entering the hollow guide part 213 enters the smoke dust removal chamber 201 through each flue gas inlet port 202. After the large particles of dust in the flue gas are filtered by the dust filter cloth 301, the filtered flue gas enters the hollow smoke guide tube 303 through the smoke outlet 304 and is discharged from the smoke exhaust butt pipe 305. After the smoke treatment is completed for a period of time, the corresponding smoke exhaust butt pipe 305 is blocked, and the dust filter cloth winding roller 206 is controlled by the winding control motor 211 to rotate in the opposite direction. Under the action of the elastic restoring force of the first elastic member 405, the first mounting plate 407 is re-attached to the limit strip 210, and the first elastic member 405 returns to the natural state, and the smoke outlet pipe 205 is re-connected with the limit strip 210. The closed channel 204 is connected (i.e., returns to the initial position). During this process, the dust filter cloth 301 is pulled to make it move relative to the dust scraping plate 302, that is, the dust attached to the surface of the dust filter cloth 301 is scraped off, and the scraped dust falls into the smoke filter chamber 201, and the smoke that subsequently enters the smoke filter chamber 201 is discharged through the smoke outlet pipe 205 and the U-shaped guide pipe 214 to filter out large particles of dust. After the dust on the surface of the dust filter cloth 301 is cleaned, the dust filter cloth winding roller 206 is controlled to rotate again by the winding control motor 211, so that the dust filter cloth 301 is gradually wound on the dust filter cloth winding roller 206 until the closed piston plate 401 is tightly fitted into the closed channel 204 to achieve the blocking of the closed channel 204 again, and then the blocking of the smoke exhaust butt joint pipe 305 is released to continue to filter out large particles of dust through the dust filter cloth 301.

[0049] Specific embodiment 2, based on specific embodiment 1, the present invention further includes a boiler butt joint pipe 6, the two smoke inlet ends of the boiler butt joint pipe 6 are respectively installed on the smoke exhaust pipes of the two drums of the boiler, and the smoke exhaust end of the boiler butt joint pipe 6 is installed at the smoke inlet end corresponding to the U-shaped guide pipe 214, and the smoke exhaust end of the U-shaped guide pipe 214 is installed with a first smoke exhaust pipe 7 (such as Figure 1 As shown in the figure, the flue gas generated during the use of the boiler enters the corresponding U-shaped guide pipe 214 through the boiler docking pipe 6, and then the dust in the flue gas is filtered through the corresponding smoke dust treatment mechanism 1.

[0050] In this embodiment of the present invention, the present invention further comprises a smoke conveying pipe 8 and a second smoke exhaust pipe 9, and the smoke conveying pipe 8 is arranged between two adjacent smoke dust treatment mechanisms 1; wherein, the smoke inlet end of the smoke conveying pipe 8 is installed on the top of the corresponding smoke exhaust butt joint pipe 305, the smoke exhaust end of the smoke conveying pipe 8 is installed on the smoke inlet end of the corresponding U-shaped guide pipe 214, and the smoke inlet end of the second smoke exhaust pipe 9 is installed on the top of the corresponding smoke exhaust butt joint pipe 305, and the smoke conveying pipe 8 and the second smoke exhaust pipe 9 are both installed with a solenoid valve 10, and the lower ports of each of the first smoke exhaust pipe 7 and the second smoke exhaust pipe 9 are inserted into Under the water surface in the water tank, all the solenoid valves 10 are in the open state in the initial state. After the flue gas completes dust filtration in the first smoke dust treatment mechanism 1, it is transported to the second smoke dust treatment mechanism 1 through the smoke conveying pipe 8 for smoke dust filtration again. In this way, multi-stage treatment of the flue gas can be achieved through multiple smoke dust treatment mechanisms 1. The flue gas that has completed dust filtration by the last smoke dust treatment mechanism 1 enters the water tank through the second smoke exhaust pipe 9, and the dust in the flue gas is absorbed and removed by the water in the water tank, thereby ensuring the removal effect of large particles of dust in the boiler flue gas.

[0051] After the smoke treatment is completed for a period of time by each smoke treatment mechanism 1, the controller controls the first solenoid valve 10 to close and starts the corresponding winding control motor 211 to drive the dust filter cloth winding roller 206 to rotate in the opposite direction, so that the smoke outlet pipe 205 on the first smoke treatment mechanism 1 is in an open state (that is, the smoke outlet pipe 205 is connected to the closed channel 204). At this time, the smoke entering the first smoke treatment mechanism 1 flows into the first smoke exhaust pipe 7 through the corresponding smoke outlet pipe 205 and the U-shaped guide pipe 214, and is then discharged from the first smoke exhaust pipe 7 to the water in the water tank to filter out large particles of dust (the scraped dust is carried into the water by the airflow for absorption and removal). In this process, the dust attached to the surface of the dust filter cloth 301 is cleaned by pulling the relative movement of the dust filter cloth 301 and the dust scraping plate 302, and at the same time, it is ensured that the dust-containing smoke is not discharged into the external environment to cause dust pollution during the dust cleaning process;

[0052] After the dust accumulation of the dust filter cloth 301 in the first smoke dust treatment mechanism 1 is cleaned, the controller first controls the first solenoid valve 10 to reopen, and at the same time controls the corresponding winding control motor 211 to drive the dust filter cloth winding roller 206 to rotate, so that the closed piston plate 401 is tightly fitted into the closed channel 204 to achieve the blocking of the closed channel 204 again. At this time, the dust filter cloth 301 in the first smoke dust treatment mechanism 1 after the dust accumulation is cleaned continues to achieve smoke dust treatment;

[0053] Subsequently, the controller controls the second solenoid valve 10 to close and starts the corresponding winding control motor 211 to drive the dust filter cloth winding roller 206 to rotate in the opposite direction, so that the smoke outlet pipe 205 on the second smoke treatment mechanism 1 is in an open state (that is, the smoke outlet pipe 205 is connected to the closed channel 204). At this time, the smoke entering the second smoke treatment mechanism 1 flows into the corresponding first smoke exhaust pipe 7 through the corresponding smoke outlet pipe 205 and the U-shaped guide pipe 214, and is then discharged from the first smoke exhaust pipe 7 to the water in the water tank to achieve filtering of large particles of dust. In this process, the dust attached to the surface of the dust filter cloth 301 is cleaned by pulling the relative movement of the dust filter cloth 301 and the dust scraping plate 302, while ensuring that the dust-containing smoke will not be discharged into the external environment to cause dust pollution during the dust cleaning process. After the dust accumulation on the dust filter cloth 301 in the second smoke dust treatment mechanism 1 is cleaned, the controller first controls the second solenoid valve 10 to reopen, and at the same time controls the corresponding winding control motor 211 to drive the dust filter cloth winding roller 206 to rotate, so that the closed piston plate 401 is tightly fitted into the closed channel 204 to achieve the blocking of the closed channel 204 again. At this time, the dust filter cloth 301 in the second smoke dust treatment mechanism 1 after the dust accumulation is cleaned continues to achieve smoke treatment. In this way, the dust accumulation on the dust filter cloth 301 in each smoke dust treatment mechanism 1 can be cleaned in turn according to the same control method as above. After the dust accumulation on the dust filter cloth 301 in each smoke dust treatment mechanism 1 is cleaned, each solenoid valve 10 is in an open state. At this time, large particles of dust in the flue gas are filtered out by each smoke dust treatment mechanism 1.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A U-shaped separator for handling large dust particles in a double-drum boiler, characterized in that: It includes a smoke treatment mechanism; wherein the smoke treatment mechanism includes a smoke guide assembly, and a smoke filter assembly and a flow direction conversion assembly are respectively installed inside the smoke guide assembly, the smoke filter assembly is used to filter particulate dust in the boiler smoke, and the flow direction conversion assembly is used to realize the flow direction conversion of the smoke between different media; The smoke guide assembly comprises: A smoke filter chamber, wherein a smoke inlet is provided at the bottom of the smoke filter chamber and is connected thereto, and the smoke from the boiler is transported to the inside of the smoke filter chamber through the smoke inlet; A flow direction conversion chamber, wherein the flow direction conversion chamber is arranged on one side of the smoke and dust filtering chamber, and the smoke and dust filtering chamber is connected to the flow direction conversion chamber through a closed passage; A smoke outlet pipe, wherein the smoke outlet pipe is fixedly installed on one side of the flow direction conversion chamber, and the smoke outlet pipe is connected to the flow direction conversion chamber, and a dust filter cloth winding roller is rotatably arranged inside the flow direction conversion chamber; and A smoke guide box, wherein a chamber partition plate is fixedly arranged inside the smoke guide box, and a closed guide plate is fixedly arranged on one side of the chamber partition plate; The smoke filter assembly comprises: A smoke outlet portion, wherein the smoke outlet portion is fixedly mounted inside the smoke dust filter chamber, a dust filter cloth is wound between the dust filter cloth winding roller and the smoke outlet portion, and smoke filtered by the dust filter cloth enters the smoke outlet portion and flows upward to be discharged from the smoke dust filter chamber; and An ash scraping plate, the ash scraping plate is installed inside the smoke filter chamber, and the ash scraping plate is symmetrically installed on both sides of the smoke outlet, and the ash scraping end of the ash scraping plate presses the dust filter cloth so that the dust filter cloth is closely attached to the peripheral side of the smoke outlet; The flow direction conversion component comprises: A closed piston plate, the closed piston plate is tightly fitted inside the closed channel, when the closed piston plate blocks the closed channel, the smoke entering the smoke filter chamber through the smoke inlet is led out along the smoke outlet, when the closed piston plate is separated from the closed channel, the smoke entering the smoke filter chamber through the smoke inlet is led out along the smoke outlet pipe; A dust filter cloth fixing roller, which is fixedly mounted on one side of the closed piston plate and moves synchronously with the closed piston plate, and the movable end of the dust filter cloth is wound around the smoke outlet portion and fixed on the dust filter cloth fixing roller after passing through the closed piston plate; A sealed movable plate, wherein the sealed movable plate is slidably disposed inside the flow direction conversion chamber, and the sealed movable plate is slidably connected to the sealed guide plate, and the sealed piston plate is fixedly mounted on a side of the sealed movable plate close to the sealed passage; A first sealing plate, the first sealing plate is fitted on one side of the opening of the smoke guide box and the two are connected by a fastener, a first elastic member is fixedly provided on one side of the first sealing plate, and two second sealing plates are symmetrically installed on the top of the smoke guide box; and A horizontal mounting seat, wherein the horizontal mounting seat is fixedly arranged on a side of the enclosed movable plate away from the enclosed piston plate, the dust filter cloth fixing roller is fixedly installed on the top of the horizontal mounting seat, a first mounting plate connected to the first elastic member is fixedly arranged on one side of the horizontal mounting seat, and a first cloth threading seam and a second cloth threading seam that penetrate the enclosed piston plate are provided on the surface of the enclosed movable plate.

2. A U-shaped separator for handling large dust particles in a double-drum boiler according to claim 1, characterized in that: The smoke guide assembly also includes a limit strip; the enclosed channel is opened on the chamber partition plate, and the smoke filter chamber and the flow direction conversion chamber are separated by the chamber partition plate; the limit strip is fixedly arranged on the inner wall of the smoke guide box, and the limit strip is located inside the flow direction conversion chamber, and a winding control motor is fixedly installed at the bottom of the smoke guide box, and the output shaft of the winding control motor is fixedly installed at the bottom of the dust filter cloth winding roller.

3. A U-shaped separator for handling large dust particles in a double-drum boiler according to claim 2, characterized in that: The smoke guide assembly also includes: A smoke inlet pipe, the smoke inlet pipe is fixedly arranged at the bottom of the smoke guide box, a smoke flow opening is opened on the side surface of the smoke inlet pipe, and the smoke inlet pipe is arranged below the smoke dust filtering chamber; A hollow guide portion, which is fixedly mounted on the bottom of the smoke guide box and is coaxially arranged with the smoke inlet pipe, and the smoke filter cavity and the hollow guide portion are connected via a smoke inlet; and A U-shaped flow guide pipe, wherein the U-shaped flow guide pipe is fixedly mounted at the bottom of the smoke inlet pipe and the two are connected, one end of the smoke outlet pipe is fixedly mounted on the outer wall of the smoke guide box, the other end of the smoke outlet pipe is fixedly mounted on the peripheral side of the U-shaped flow guide pipe, and the smoke outlet pipe is connected to the U-shaped flow guide pipe, and an arc-shaped partition located between the smoke inlet pipe and the smoke outlet pipe is fixed inside the U-shaped flow guide pipe.

4. A U-shaped separator for handling large dust particles in a double-drum boiler according to claim 3, characterized in that: The smoke outlet part includes a hollow smoke guide tube fixedly installed inside the smoke and dust filtering chamber, a plurality of smoke outlets are opened on the peripheral side of the hollow smoke guide tube, a smoke exhaust butt joint tube connected to the hollow smoke guide tube is fixedly installed on the top of the hollow smoke guide tube, the dust filter cloth is inserted between the first cloth threading seam and the second cloth threading seam, and the dust filter cloth is tightly attached to the peripheral side of the hollow smoke guide tube.

5. A U-shaped separator for handling large dust particles in a double-drum boiler according to claim 4, characterized in that: A second mounting plate is fixedly provided on one side of the dust scraping plate, a second elastic member connected to the second mounting plate is fixedly provided on the inner wall of the smoke guide box, a transmission rack is fixedly provided on the side of the second mounting plate away from the second elastic member, a rotating rod is rotatably provided on the smoke guide box, a transmission gear is fixedly provided on one end of the rotating rod, and the transmission gear is meshed with the transmission racks on the upper and lower sides thereof.

6. A U-shaped separator for handling large dust particles in a double-drum boiler according to claim 5, characterized in that: It also includes a boiler butt joint pipe, the two smoke inlet ends of the boiler butt joint pipe are respectively installed on the smoke exhaust pipes of the two drums of the boiler, the smoke exhaust end of the boiler butt joint pipe is installed on the smoke inlet end of the corresponding U-shaped guide pipe, and the smoke exhaust end of the U-shaped guide pipe is installed with a first smoke exhaust pipe extending downward.

7. A U-shaped separator for handling large dust particles in a double-drum boiler according to claim 6, characterized in that: It also includes a smoke conveying pipe and a second smoke exhaust pipe, wherein the smoke conveying pipe is arranged between two adjacent smoke treatment mechanisms; Among them, the smoke inlet end of the smoke conveying pipe is installed on the top of the corresponding smoke exhaust butt pipe, the smoke exhaust end of the smoke conveying pipe is installed on the smoke inlet end of the corresponding U-shaped guide pipe, and the smoke inlet end of the second smoke exhaust pipe is installed on the top of the corresponding smoke exhaust butt pipe. Solenoid valves are installed on the smoke conveying pipe and the second smoke exhaust pipe.

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