A SOEC zero-carbon emission system based on flue gas energy recovery from power plants

Abstract

The present invention provides a SOEC zero-carbon emission system based on flue gas energy recovery in power plants, which belongs to the field of flue gas energy recovery and includes a boiler body, a pipe 1, a pipe 2, and a pipe 3. Pipe 1 is installed on the outer wall of the boiler body, pipe 2 is installed on the outer wall of the boiler body, and pipe 3 is installed on the outside of pipe 2. The outer wall of pipe 3 is respectively installed with a connecting component and a collecting component, and a filter component is provided inside pipe 3. This invention, by providing a filter plate and a scraper, when the flue gas enters the interior of pipe 3, it will further increase the flow speed under the action of the guide plate, and rotate by blowing the fan blades, so that the fan blades drive the scraper to rotate through the output shaft. When the flue gas passes through the filter plate, the smoke dust inside the smoke will be blocked by the filter plate, thereby filtering the flue gas. At the same time, when the scraper rotates under the action of the fan blades, it can process the smoke dust accumulated on the surface of the filter plate.

Description

Technical Field

[0001] The present invention relates to the field of flue gas energy recovery, and in particular to a SOEC zero-carbon emission system based on flue gas energy recovery from a power plant. Background Art

[0002] The SOEC zero-carbon emission system based on flue gas energy recovery from power plants is an innovative energy utilization solution that aims to achieve the goal of zero carbon emissions by efficiently recovering and utilizing waste heat from power plant flue gases, combined with solid oxide electrolysis cell (SOEC) technology, to capture, utilize and store carbon dioxide. It has the advantages of high efficiency, energy saving, zero carbon emissions, strong flexibility and significant environmental benefits. The waste heat boiler is one of the core equipment of the flue gas energy recovery system. It uses the heat of high-temperature flue gas to heat water or generate steam. This steam can be used for power generation, heating or other industrial purposes, thereby realizing energy reuse. The design of the waste heat boiler usually takes into account factors such as the temperature, flow rate and composition of the flue gas to ensure its efficient operation.

[0003] However, when a waste heat boiler is in use, the high-temperature flue gas carries a large amount of soot. When the dust content in the flue gas is high, these soot particles tend to accumulate on the heating surfaces of the waste heat boiler (such as the back of the heat transfer tube bundle). This soot accumulation forms an insulating layer, hindering heat transfer between the flue gas and the heating surface, thereby reducing heat exchange efficiency. Furthermore, soot accumulation not only affects heat exchange efficiency but also increases resistance in the boiler system, requiring more frequent cleaning operations, increasing maintenance costs and labor intensity. Solving these problems has become a pressing issue for those skilled in the art. Summary of the Invention

[0004] In order to make up for the above shortcomings, the present invention provides a SOEC zero-carbon emission system based on power plant flue gas energy recovery, which aims to solve the problem that smoke and dust easily accumulate on the inner wall of the waste heat boiler in the existing emission system, resulting in a decrease in the heat exchange efficiency of the waste heat boiler.

[0005] The present invention is achieved in that:

[0006] The present invention provides a SOEC zero-carbon emission system based on power plant flue gas energy recovery, comprising:

[0007] Flue gas pretreatment system: In the flue gas pretreatment system, when preheating and recovering the flue gas, heat exchange treatment is performed through the waste heat boiler.

[0008] CO2 capture and recovery system: used to absorb carbon dioxide in flue gas.

[0009] Refrigeration system: used to provide the required cooling capacity for the entire process.

[0010] Energy conversion and utilization system: used to convert recovered waste heat into electrical energy.

[0011] Preferably, the waste heat boiler in the flue gas pretreatment system includes a boiler body, pipe one, pipe two and pipe three, pipe one is installed on the outer wall of the boiler body, pipe two is installed on the outer wall of the boiler body, pipe three is installed on the outside of pipe two, the outer wall of pipe three is respectively installed with a connecting component and a collecting component, and a filtering component is arranged inside pipe three.

[0012] Preferably, the connecting assembly includes a connecting plate, an extension tube, a sliding tube, a spring 1, a threaded rod and a nut, the connecting plate is installed on the outer wall of pipe 2, the extension tube is fixedly connected to the outer wall of the connecting plate, the sliding tube is fixedly connected to the outer wall of the connecting plate, the spring 1 is fixedly connected to the outer wall of the sliding tube, the threaded rod is installed on the outer wall of the connecting plate, and the nut is threadedly connected to the outer wall of the threaded rod.

[0013] Preferably, sliding rails are provided inside pipe 2 and pipe 3, the outer walls of the extension pipe and the sliding pipe are slidingly connected to the inner walls of the sliding rails, the end of the spring 1 away from the sliding tube is fixedly connected to the inner wall of the sliding rail inside pipe 3, and the threaded rod passes through pipe 2, pipe 3 and the connecting plate, and is slidingly connected to pipe 2, pipe 3 and the connecting plate respectively.

[0014] By adopting the above technical solution, the extension tube can move inside the pipe two, the sliding tube can drive the spring one to slide inside the pipe three, the threaded rod can be moved by sliding, and fixed by the nut.

[0015] Preferably, the filter assembly includes a guide plate, a filter plate, a fan blade, a scraper, a fixed bracket, a convex plate, a convex column, a swing plate and a second spring, the guide plate is fixedly connected to the inner wall of the third pipe, the filter plate is fixedly connected to the inner wall of the third pipe, the fan blade is arranged inside the third pipe, the scraper is arranged on the outer wall of the filter plate, the fixed bracket is fixedly connected to the inner wall of the third pipe, the convex plate is fixedly connected to the outer wall of the scraper, the convex column is fixedly connected to the outer wall of the filter plate, the swing plate is installed on the outer wall of the convex column, and the second spring is fixedly connected to the outer wall of the swing plate.

[0016] Preferably, the outer wall of the fan blade is fixedly connected to the output shaft, the outer wall of the scraper is fixedly connected to the end of the output shaft away from the fan blade, the output shaft of the outer wall of the fan blade passes through the fixed bracket and extends to the outside of the fixed bracket, and the inner wall of the fixed bracket is rotatably connected to the outer wall of the output shaft.

[0017] By adopting the above technical solution, when the flue gas drives the fan blades to rotate, the scraper will be driven to rotate through the output shaft, thereby cleaning the surface of the filter plate. The fixed bracket can support the fan blades and the scraper through the output shaft.

[0018] Preferably, the outer wall of the boss is rotatably connected to the inner wall of the swing plate, one end of the swing plate extends into the rotation radius of the boss, and the end of the spring 2 away from the swing plate is fixedly connected to the inner wall of the pipe 3.

[0019] By adopting the above technical solution, the swing plate can rotate on the surface of the convex column. When the scraper drives the convex plate to rotate, the convex plate will collide with the swing plate. The presence of spring 2 can absorb the impact force generated by the collision and limit the rotation angle of the swing plate.

[0020] Preferably, the collection assembly includes a stacking bin, a limiting ring, a fixed block and a bent rod, the stacking bin is located at the bottom of pipe three, the limiting ring is fixedly connected to the outer wall of pipe three, the fixed block is fixedly connected to the top of pipe three, and the bent rod is installed on the outer wall of pipe three.

[0021] Preferably, the outer wall of the limiting ring is slidably connected to the outer wall of the stacking bin, a track is provided on the outer wall of the pipe three, the outer wall of the bent rod is slidably connected to the inner wall of the track, the outer wall of the bent rod is respectively abutted against the outer wall of the stacking bin and the outer wall of the fixed block, and the outer wall of the bent rod is installed with bolts.

[0022] By adopting the above technical solution, the stacking bin can be moved to the outer wall of pipe three by sliding, the bent rod can be installed by sliding, and the bent rod can be fixed by using bolts, so that the bent rod has a restrictive effect on the stacking bin.

[0023] The beneficial effects of the present invention are:

[0024] 1. By setting the filter plate and the scraper, when the flue gas enters the interior of the pipe three, the flow speed will be further increased under the action of the guide plate, and the fan blades will be blown to rotate, so that the fan blades drive the scraper to rotate through the output shaft. When the flue gas passes through the filter plate, the smoke inside the smoke will be blocked by the filter plate, thereby filtering the flue gas. At the same time, when the scraper rotates under the action of the fan blades, the smoke dust accumulated on the surface of the filter plate can be processed, thereby preventing the smoke dust from accumulating on the surface of the filter plate, causing the smoke dust to block the filter plate and reduce the filtration speed of the filter plate, thereby solving the problem that the inner wall of the waste heat boiler in the existing emission system is prone to smoke dust accumulation, resulting in a decrease in the heat exchange efficiency of the waste heat boiler.

[0025] 2. By setting the convex plate and the swing plate, when the scraper drives the convex plate to rotate, it will collide with the swing plate. The impact force generated during the collision will shake off the smoke and dust adsorbed on the scraper surface, preventing the smoke and dust from being adsorbed and accumulated on the surface of the scraper, resulting in a decrease in the cleaning effect of the scraper on the filter plate. At the same time, the swing plate will exert pressure on the spring 2 during the collision. When the swing plate separates from the convex plate, the spring 2 will push the swing plate to reset and prepare for subsequent collision cleaning, thereby ensuring the cleaning effect of the scraper on the filter plate.

[0026] 3. By setting up the stacking bin and the curved rod, the smoke and dust cleaned during the rotation of the scraper will fall into the interior of the stacking bin through the gap. At the same time, during the collision between the convex plate and the swing plate, the dust will also fall into the interior of the stacking bin through the gap, which is convenient for operators to centrally process the smoke and dust, and prevent the smoke and dust from accumulating inside the pipe and affecting the transportation of smoke. The stacking bin is fixed to the surface of the pipe by the curved rod. When the smoke and dust inside the stacking bin accumulates to a certain extent, the curved rod can be removed and the smoke and dust inside the stacking bin can be processed. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the flue gas pretreatment structure of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the pipeline structure of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of connection components of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the stacking component structure of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the separation structure of stacking components of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of a pipeline of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of a filter component of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention;

[0035] Figure 8 It is a flow chart of a SOEC zero-carbon emission system based on power plant flue gas energy recovery provided by an embodiment of the present invention.

[0036] In the figure: 1. Boiler body; 2. Pipe 1; 3. Pipe 2; 4. Pipe 3; 5. Connecting assembly; 501. Connecting plate; 502. Extension pipe; 503. Sliding pipe; 504. Spring 1; 505. Threaded rod; 506. Nut; 6. Filter assembly; 601. Guide plate; 602. Filter plate; 603. Fan blade; 604. Scraper; 605. Fixed bracket; 606. Protruding plate; 607. Protruding column; 608. Swinging plate; 609. Spring 2; 7. Collecting assembly; 701. Stacking bin; 702. Limiting ring; 703. Fixed block; 704. Bend rod. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 making creative efforts are within the scope of protection of the present invention.

[0038] Reference Figures 1-8 , a SOEC zero-carbon emission system based on power plant flue gas energy recovery, including a flue gas pretreatment system. The flue gas generated by the power plant is first subjected to dry desulfurization or wet desulfurization treatment to remove pollutants such as sulfur dioxide. In this process, the waste heat in the flue gas can be initially utilized. In the flue gas pretreatment system, when preheating and recovering the flue gas, a waste heat boiler is usually used for heat exchange treatment.

[0039] In the CO2 capture and recovery system, in the absorption tower, the carbon dioxide in the flue gas reacts with the MEA solution and is absorbed into the solution to form a rich liquid. During this process, the temperature of the flue gas may drop, but the waste heat can still be recovered through the heat exchanger. In addition, the rich liquid coming out of the absorption tower may need to be further heated by a heat exchanger before entering the desorption tower to improve the desorption efficiency, which is also a link in the waste heat recovery.

[0040] Refrigeration system: During the liquefaction process, the refrigeration system provides the required cooling capacity for the entire process. However, a certain amount of waste heat will be generated during the refrigeration process, which can also be recovered and utilized through a heat exchanger.

[0041] Energy conversion and utilization system, the recovered waste heat can be converted into electricity, thermal energy and other forms of energy for power generation, heating, cooling and other purposes. For example, the steam generated by the waste heat boiler can drive the steam turbine to generate electricity, or be directly used for industrial heating and civil heating.

[0042] The waste heat boiler in the flue gas pretreatment system includes a boiler body 1, pipe 1 2, pipe 2 3 and pipe 3 4. Pipe 1 2 is installed on the outer wall of the boiler body 1, pipe 2 3 is installed on the outer wall of the boiler body 1, and pipe 3 4 is installed on the outside of pipe 2 3. The outer walls of pipe 3 4 are respectively installed with connecting components 5 and collecting components 7, and the interior of pipe 3 4 is provided with a filtering component 6.

[0043] The connecting assembly 5 includes a connecting plate 501, an extension tube 502, a sliding tube 503, a spring 1 504, a threaded rod 505 and a nut 506. The connecting plate 501 is installed on the outer wall of the pipe 2 3, the extension tube 502 is fixedly connected to the outer wall of the connecting plate 501, the sliding tube 503 is fixedly connected to the outer wall of the connecting plate 501, the spring 1 504 is fixedly connected to the outer wall of the sliding tube 503, the threaded rod 505 is installed on the outer wall of the connecting plate 501, and the nut 506 is threadedly connected to the outer wall of the threaded rod 505.

[0044] It should be noted that: sliding rails are provided inside pipe 2 3 and pipe 3 4, and the outer walls of the extension tube 502 and the outer walls of the sliding tube 503 are both slidably connected to the inner walls of the sliding rails, and the extension tube 502 can move inside pipe 2 3. The end of the spring 1 504 away from the sliding tube 503 is fixedly connected to the inner wall of the sliding rail inside pipe 3 4, and the sliding tube 503 can drive the spring 1 504 to slide inside pipe 3 4. The threaded rod 505 passes through pipe 2 3, pipe 3 4 and the connecting plate 501, and is respectively slidably connected to pipe 2 3, pipe 3 4 and the connecting plate 501. The threaded rod 505 can be moved by sliding and fixed by a nut 506.

[0045] The connecting plate 501 is moved by sliding so that the connecting plate 501 drives the extension tube 502 to slide into the interior of the pipe 2 3, and then the threaded rod 505 is moved by sliding. After the threaded rod 505 is installed, the nut 506 is moved by rotating so that the nut 506 is respectively in contact with the outer wall of the pipe 2 3, the outer wall of the connecting plate 501 and the outer wall of the pipe 3 4, thereby completing the connection between the pipe 3 4 and the pipe 2 3.

[0046] The filter assembly 6 includes a guide plate 601, a filter plate 602, a fan blade 603, a scraper 604, a fixed bracket 605, a convex plate 606, a boss 607, a swing plate 608 and a spring 2 609. The guide plate 601 is fixedly connected to the inner wall of pipe 3 4, the filter plate 602 is fixedly connected to the inner wall of pipe 3 4, the fan blade 603 is arranged inside pipe 3 4, the scraper 604 is arranged on the outer wall of the filter plate 602, the fixed bracket 605 is fixedly connected to the inner wall of pipe 3 4, the convex plate 606 is fixedly connected to the outer wall of the scraper 604, the boss 607 is fixedly connected to the outer wall of the filter plate 602, the swing plate 608 is installed on the outer wall of the boss 607, and the spring 2 609 is fixedly connected to the outer wall of the swing plate 608.

[0047] It should be noted that: the outer wall of the fan blade 603 is fixedly connected to the output shaft, and the outer wall of the scraper 604 is fixedly connected to the end of the output shaft away from the fan blade 603. When the smoke pushes the fan blade 603 to rotate, the scraper 604 is driven to rotate through the output shaft, thereby cleaning the surface of the filter plate 602. The output shaft of the outer wall of the fan blade 603 passes through the fixed bracket 605 and extends to the outside of the fixed bracket 605. The inner wall of the fixed bracket 605 is rotatably connected to the outer wall of the output shaft. The fixed bracket 605 can rotate the fan blade 603 and the scraper 604 through the output shaft. 04 is supported, the outer wall of the boss 607 is rotatably connected to the inner wall of the swing plate 608, one end of the swing plate 608 extends to the rotation radius of the convex plate 606, and the swing plate 608 can rotate on the surface of the boss 607. When the scraper 604 drives the convex plate 606 to rotate, the convex plate 606 will collide with the swing plate 608. The end of the spring 2 609 away from the swing plate 608 is fixedly connected to the inner wall of the pipe 3 4. The existence of the spring 2 609 can absorb the impact force generated by the collision and limit the rotation angle of the swing plate 608.

[0048] By setting the filter plate 602 and the scraper 604, when the flue gas enters the interior of the pipe three 4, the flow speed will be further increased under the action of the guide plate 601, and the fan blades 603 will be blown to rotate, so that the fan blades 603 drive the scraper 604 to rotate through the output shaft. When the flue gas passes through the filter plate 602, the smoke inside the smoke will be blocked by the filter plate 602, thereby filtering the flue gas. At the same time, when the scraper 604 rotates under the action of the fan blades 603, the smoke dust accumulated on the surface of the filter plate 602 can be processed, thereby preventing the smoke dust from accumulating on the surface of the filter plate 602, causing the smoke dust to block the filter plate 602 and reduce the filtration speed of the filter plate 602, thereby solving the problem that smoke dust easily accumulates on the inner wall of the waste heat boiler in the existing emission system, resulting in a decrease in the heat exchange efficiency of the waste heat boiler.

[0049] By setting the convex plate 606 and the swing plate 608, when the scraper 604 drives the convex plate 606 to rotate, it will collide with the swing plate 608. The impact force generated during the collision will shake off the smoke and dust adsorbed on the surface of the scraper 604, preventing the smoke and dust from being adsorbed and accumulated on the surface of the scraper 604, resulting in a decrease in the cleaning effect of the scraper 604 on the filter plate 602. At the same time, during the collision, the swing plate 608 will apply pressure to the spring 2 609. When the swing plate 608 is separated from the convex plate 606, the spring 2 609 will push the swing plate 608 to reset and prepare for subsequent collision cleaning, thereby ensuring the cleaning effect of the scraper 604 on the filter plate 602.

[0050] After the flue gas enters the interior of the pipe three 4, it drives the fan blades 603 to rotate, and drives the scraper 604 to rotate on the outer wall of the filter plate 602 through the output shaft. When the flue gas passes through the filter plate 602, the smoke carried inside the flue gas will be filtered by the filter plate 602. When the scraper 604 rotates, it will clean the smoke dust accumulated on the surface of the filter plate 602. When the scraper 604 rotates, it will drive the convex plate 606 to rotate. When the convex plate 606 collides with the swing plate 608, the smoke dust adsorbed on the surface of the scraper 604 will be shaken off, thereby completing the dust cleaning on the surface of the filter plate 602.

[0051] The collecting assembly 7 includes a stacking bin 701, a limiting ring 702, a fixed block 703 and a bent rod 704. The stacking bin 701 is located at the bottom of pipe three 4, the limiting ring 702 is fixedly connected to the outer wall of pipe three 4, the fixed block 703 is fixedly connected to the top of pipe three 4, and the bent rod 704 is installed on the outer wall of pipe three 4.

[0052] It should be noted that: the outer wall of the limiting ring 702 is slidably connected to the outer wall of the stacking bin 701, and the stacking bin 701 can be moved to the outer wall of the pipe three 4 by sliding. The outer wall of the pipe three 4 is provided with a track, and the outer wall of the bent rod 704 is slidably connected to the inner wall of the track. The outer wall of the bent rod 704 is respectively abutted against the outer wall of the stacking bin 701 and the outer wall of the fixed block 703. The outer wall of the bent rod 704 is installed with bolts, and the bent rod 704 can be installed by sliding, and the bent rod 704 can be fixed by using bolts, so that the bent rod 704 has a limiting effect on the stacking bin 701.

[0053] By setting up the stacking bin 701 and the bent rod 704, the smoke and dust cleaned during the rotation of the scraper 604 will fall into the interior of the stacking bin 701 through the gap. At the same time, during the collision between the convex plate 606 and the swing plate 608, the fallen dust will also fall into the interior of the stacking bin 701 through the gap, which is convenient for operators to centrally process the smoke and dust, and at the same time avoid the smoke and dust from accumulating inside the pipe and affecting the transportation of smoke. The stacking bin 701 is fixed to the surface of the pipe by the bent rod 704. When the smoke and dust inside the stacking bin 701 accumulates to a certain extent, the bent rod 704 can be removed and the smoke and dust inside the stacking bin 701 can be processed. The operation is simple and convenient.

[0054] The stacking bin 701 is slid and moved to the bottom of the pipe 3 4 under the restriction of the limit ring 702, and the bent rod 704 is moved by sliding so that the bent rod 704 moves into the slide rail and at the same time abuts against the outer wall of the stacking bin 701 and the outer wall of the fixed block 703. After the installation of the bent rod 704 is completed, the bolt is moved by rotating until the bolt passes through the bent rod 704 and extends to the outer wall of the bent rod 704. At this time, the installation of the stacking bin 701 is completed. The smoke and dust dropped during the rotation of the scraper 604 and the smoke and dust dropped during the collision between the convex plate 606 and the swing plate 608 will enter the interior of the stacking bin 701 through the gap. After the smoke and dust are collected, the bent rod 704 can be removed and the smoke and dust inside the stacking bin 701 can be centrally processed. The operation is simple and convenient.

[0055] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A SOEC zero-carbon emission system based on flue gas energy recovery from power plants, characterized in that: include: Flue gas pretreatment system: In the flue gas pretreatment system, when preheating and recovering the flue gas, heat exchange treatment is performed through the waste heat boiler; CO2 capture and recovery system: used to absorb carbon dioxide in flue gas; Refrigeration system: used to provide the required cooling capacity for the entire process; Energy conversion and utilization system: used to convert recovered waste heat into electrical energy; The waste heat boiler in the flue gas pretreatment system comprises a boiler body (1), a pipe 1 (2), a pipe 2 (3) and a pipe 3 (4), wherein the pipe 1 (2) is mounted on the outer wall of the boiler body (1), the pipe 2 (3) is mounted on the outer wall of the boiler body (1), the pipe 3 (4) is mounted on the outside of the pipe 2 (3), the outer wall of the pipe 3 (4) is respectively mounted with a connecting component (5) and a collecting component (7), and the interior of the pipe 3 (4) is provided with a filtering component (6); The connecting assembly (5) comprises a connecting plate (501), an extension tube (502), a sliding tube (503), a spring (504), a threaded rod (505) and a nut (506); the connecting plate (501) is mounted on the outer wall of the pipe (3); the extension tube (502) is fixedly connected to the outer wall of the connecting plate (501); the sliding tube (503) is fixedly connected to the outer wall of the connecting plate (501); the spring (504) is fixedly connected to the outer wall of the sliding tube (503); the threaded rod (505) is mounted on the outer wall of the connecting plate (501); and the nut (506) is threadedly connected to the outer wall of the threaded rod (505); The interiors of the pipe 2 (3) and the pipe 3 (4) are both provided with slide rails, the outer walls of the extension pipe (502) and the outer walls of the sliding pipe (503) are both slidably connected to the inner walls of the slide rails, the end of the spring 1 (504) away from the sliding pipe (503) is fixedly connected to the inner wall of the slide rail inside the pipe 3 (4), the threaded rod (505) passes through the pipe 2 (3), the pipe 3 (4) and the connecting plate (501), and is slidably connected to the pipe 2 (3), the pipe 3 (4) and the connecting plate (501) respectively; The filter assembly (6) comprises a guide plate (601), a filter plate (602), a fan blade (603), a scraper (604), a fixed bracket (605), a convex plate (606), a convex column (607), a swing plate (608) and a second spring (609), wherein the guide plate (601) is fixedly connected to the inner wall of the third pipe (4), the filter plate (602) is fixedly connected to the inner wall of the third pipe (4), and the fan blade (603) is arranged on the third pipe (4). ), the scraper (604) is arranged on the outer wall of the filter plate (602), the fixing bracket (605) is fixedly connected to the inner wall of the pipe three (4), the convex plate (606) is fixedly connected to the outer wall of the scraper (604), the convex column (607) is fixedly connected to the outer wall of the filter plate (602), the swing plate (608) is installed on the outer wall of the convex column (607), and the spring two (609) is fixedly connected to the outer wall of the swing plate (608); The outer wall of the fan blade (603) is fixedly connected to an output shaft, the outer wall of the scraper (604) is fixedly connected to an end of the output shaft away from the fan blade (603), the output shaft of the outer wall of the fan blade (603) passes through the fixed bracket (605) and extends to the outside of the fixed bracket (605), and the inner wall of the fixed bracket (605) is rotatably connected to the outer wall of the output shaft; The outer wall of the convex column (607) is rotatably connected to the inner wall of the swing plate (608), one end of the swing plate (608) extends into the rotation radius of the convex plate (606), and the end of the spring 2 (609) away from the swing plate (608) is fixedly connected to the inner wall of the pipe 3 (4); The collecting assembly (7) comprises a stacking bin (701), a limiting ring (702), a fixing block (703) and a bent rod (704), wherein the stacking bin (701) is located at the bottom of the pipe three (4), the limiting ring (702) is fixedly connected to the outer wall of the pipe three (4), the fixing block (703) is fixedly connected to the top of the pipe three (4), and the bent rod (704) is installed on the outer wall of the pipe three (4); The outer wall of the limiting ring (702) is slidably connected to the outer wall of the stacking bin (701), the outer wall of the pipe three (4) is provided with a track, the outer wall of the bent rod (704) is slidably connected to the inner wall of the track, the outer wall of the bent rod (704) is respectively in contact with the outer wall of the stacking bin (701) and the outer wall of the fixed block (703), and the outer wall of the bent rod (704) is installed with bolts.

Images