Yellow phosphorus tail gas desulfurization device

Abstract

The utility model discloses a yellow phosphorus tail gas desulfurization device, which relates to the technical field of desulfurization devices and comprises a desulfurization spraying box, the upper surface of the desulfurization spraying box is fixedly connected with a water tank, the lower part of the left side of the desulfurization spraying box is fixedly connected with a gas inlet pipeline, and the right side of the lower part of the desulfurization spraying box is fixedly connected with a filter box. A sealing door is fixedly mounted at the lower part of the front surface of the filter box, and a connecting conveying pipeline is fixedly connected to the right side of the upper part of the desulfurization spraying box. According to the yellow phosphorus tail gas desulfurization device disclosed by the utility model, impurities on the outer wall of the filter frame can be cleaned under the action of the annular plate and the annular cleaning brush, so that the filter frame is prevented from being blocked during use, and the filter frame is prevented from being blocked as the annular cleaning brush and the outer wall of the upper part of the annular plate are inclined. Therefore, the annular cleaning brush and the annular plate do not accumulate when cleaning the impurities upwards, and the cleaned impurities can fall down to the lower part of the inner cavity of the filter box along the inclined surface.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization devices, in particular to a yellow phosphorus tail gas desulfurization device. Background Art

[0002] The yellow phosphorus tail gas boiler is a boiler product specially designed and manufactured for yellow phosphorus production enterprises. The fuel is the tail gas from the production of yellow phosphorus. The design of the boiler takes into account the strong corrosiveness of yellow phosphorus tail gas, and at the same time avoids the blockage of the boiler fire tube by a large amount of impurities during the combustion of yellow phosphorus tail gas. The heat energy generated by the combustion of tail gas can be effectively recovered for steam production or power generation. The boiler is an ideal choice for yellow phosphorus production enterprises to save energy and reduce consumption and replace coal-fired boilers. It has been successfully applied in many large yellow phosphorus production enterprises and is well received by users. Flue gas will be generated during the use of the yellow phosphorus tail gas boiler, and these flue gases generally need to be desulfurized and purified to meet the emission standards to avoid affecting and polluting the atmospheric environment.

[0003] For example, the Chinese patent with publication number CN115554827A discloses a flue gas desulfurization device for a yellow phosphorus tail gas boiler, including a treatment box, a replacement mechanism is provided on the inner wall of the treatment box, a filter assembly is provided on one side of the replacement mechanism, a cleaning mechanism is provided on the left side of the treatment box, a spray mechanism is provided on the top of the treatment box, the treatment box is fixedly connected to a water tank, and the replacement mechanism includes a connecting groove, the connecting groove is fixedly connected to the inner wall of the treatment box, and a connecting block is slidably connected inside the connecting groove. The yellow phosphorus tail gas boiler flue gas desulfurization device, through the replacement mechanism, when it is necessary to disassemble the filter assembly, first pull the pull rod through the connecting block to move, so that the pull rod can drive the plug block to detach from the inside of the connecting block to cancel the limit on it, and at the same time, the pull plate will slide on the outer wall of the fixed rod to compress the spring. When the plug block is completely detached from the inside of the connecting block, the connecting block can be pulled out from the inside of the connecting groove through the filter assembly to realize the inspection and replacement and maintenance of the filter assembly.

[0004] The existing technology has the following problems:

[0005] The yellow phosphorus tail gas desulfurization device cannot filter impurities in the flue gas well during use, and the filter components are extremely easy to be clogged during delivery after long-term use, thus affecting its use. In addition, the filter components of the yellow phosphorus tail gas desulfurization device are not easy to disassemble and repair, which leads to inconvenience in use. At the same time, the intercepted impurities are easily accumulated in the filter box, thus affecting its use. Utility Model Content

[0006] The utility model provides a yellow phosphorus tail gas desulfurization device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A yellow phosphorus tail gas desulfurization device comprises a desulfurization spray box, the upper surface of the desulfurization spray box is fixedly connected to a water tank, the lower part of the left side of the desulfurization spray box is fixedly connected to an air intake pipe, the right side of the lower part of the desulfurization spray box is fixedly connected to a filter box, the lower part of the front of the filter box is fixedly installed with a sealing door, the right side of the upper part of the desulfurization spray box is fixedly connected to a connecting conveying pipe, the right side of the connecting conveying pipe is fixedly connected to the left side of the middle part of the filter box, the rear part of the upper surface of the filter box is fixedly connected to a fixing plate, the inner cavity of the fixing plate is fixedly connected to a cleaning assembly, the upper surface of the central part of the filter box is fixedly installed with a filter assembly and the filter assembly is located in front of the fixing plate, the upper surface of the filter assembly is fixedly connected to an exhaust pipe, and a blower is fixedly installed inside the exhaust pipe.

[0009] Preferably, the cleaning assembly includes a motor, the front face of the motor is fixedly connected to the inner cavity of the upper part of the fixed plate, the output end of the motor is fixedly connected to a bevel gear 1, the right side of the outer wall of the bevel gear 1 is meshed with a bevel gear 2, the inner cavity of the bevel gear 2 is fixedly connected to a connecting rod, the outer wall of the connecting rod is movably sleeved with the inner cavity of the fixed plate, the left and right sides of the connecting rod are fixedly connected to bevel gear 3, the lower surfaces of the outer walls of the two bevel gears 3 are meshed with bevel gear 4, the lower surfaces of the two bevel gears 4 are fixedly connected to threaded rods, and the outer walls of the upper and lower parts of the two threaded rods are respectively connected to The inner cavity of the upper and lower parts of the fixed plate is movably connected, and the outer walls of the middle parts of the two threaded rods are threaded with a slider 1, and the front sides of the two sliders are fixedly connected with a connecting limit plate. The outer walls of the two connecting limit plates are respectively movably connected with the inner cavity of the left and right parts of the fixed plate, and the front sides of the two connecting limit plates are fixedly connected with fixed round rods and the two fixed round rods are located on the left and right sides of the filter assembly. The lower parts of the outer walls of the two fixed round rods are respectively movably connected with the inner cavity of the filter box, and the lower parts of the outer walls of the two fixed round rods are movably connected with sealing rings, and the outer walls of the two sealing rings are fixedly connected to the inner cavity of the filter box.

[0010] Preferably, an annular plate is fixedly connected to the opposite surfaces of the lower parts of the two fixed round rods, an annular cleaning brush is fixedly connected to the inner wall of the annular plate, and the outer wall of the annular cleaning brush and the upper part of the annular plate are inclined.

[0011] Preferably, the left and right sides of the rear parts of the two connecting limit plates are fixedly connected with sliders 2, the sides of the four sliders 2 away from the connecting limit plates are slidably connected with slide rails, and the sides of the four slide rails away from the sliders 2 are respectively fixedly connected to the inner cavity of the fixed plate.

[0012] Preferably, the filter assembly includes a fixed cover, the upper surface of the fixed cover is fixedly connected to the lower surface of the exhaust pipe, the lower surface of the upper part of the fixed cover overlaps the upper surface of the filter box and the fixed cover is located between two fixed round rods, the front side of the outer wall of the upper part of the fixed cover is fixedly connected with an arc-shaped fixing plate, the lower surface of the arc-shaped fixing plate overlaps the upper surface of the filter box, the inner cavities of the left and right parts of the arc-shaped fixing plate are threadedly sleeved with screws, and the outer walls of the lower parts of the two screws are respectively threadedly sleeved with the inner cavity of the filter box.

[0013] Preferably, a sealing ring is fixedly connected to the outer wall of the lower part of the fixed cover, and the outer wall of the sealing ring is movably connected to the inner cavity of the filter box. The lower surface of the fixed cover is fixedly connected to a filter frame, and the outer wall of the filter frame is movably connected to the inner cavity of the filter box.

[0014] Preferably, the outer wall in the middle of the filter frame is an annular filter screen plate, and the outer wall in the middle of the filter frame is movably sleeved with the inner wall of the annular plate.

[0015] Preferably, a collection box is movably sleeved on the bottom of the inner cavity of the filter box and the collection box is located behind the sealing door, a handle is fixedly connected to the front of the collection box, the front of the handle overlaps with the back of the sealing door, and a material guide plate is fixedly connected to the inner cavity of the filter box and the material guide plate is located between the collection box and the filter frame.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a yellow phosphorus tail gas desulfurization device, which can clean the impurities on the outer wall of the filter frame through the action of the annular plate and the annular cleaning brush, thereby preventing the filter frame from being blocked during use, and because the outer walls of the annular cleaning brush and the upper part of the annular plate are inclined, the annular cleaning brush and the annular plate will not accumulate when cleaning impurities upward, and the cleaned impurities will fall downward along the inclined surface to the bottom of the inner cavity of the filter box.

[0018] 2. The utility model provides a yellow phosphorus tail gas desulfurization device, which enables the impurities dropped from above to gather and move downward to the inner cavity of the collecting box through the action of the guide plate, thereby preventing the impurities from accumulating in the inner cavity of the filter box, and through the action of the collecting box, it is convenient for the staff to clean the impurities regularly, and through the action of the fixing cover, the filter frame, the arc-shaped fixing plate and the screws, the fixing cover and the filter frame are fixed in the inner cavity of the filter box, thereby facilitating the rapid fixing, installation, disassembly, maintenance and replacement of the filter frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the cleaning component of the utility model;

[0023] Figure 5 This is an enlarged structural diagram of the utility model at A;

[0024] Figure 6 This is a schematic diagram of the structure of the filter assembly of the utility model;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the filter box of the utility model.

[0026] In the figure: 1. desulfurization spray box; 2. water tank; 3. air intake pipe; 4. connecting conveying pipe; 5. filter box; 6. sealing door; 7. fixing plate; 8. cleaning assembly; 9. filter assembly; 10. exhaust pipe; 51. collecting box; 52. handle; 53. guide plate; 81. motor; 82. bevel gear one; 83. bevel gear two; 84. connecting rod; 85. bevel gear three; 86. bevel gear four; 87. threaded rod; 88. slider one; 89. connecting limit plate; 810. fixed round rod; 811. annular plate; 812. annular cleaning brush; 813. slider two; 814. slide rail; 91. fixing cover; 92. arc fixing plate; 93. screw; 94. sealing ring; 95. filter frame. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1 , Figure 2As shown, a yellow phosphorus tail gas desulfurization device comprises a desulfurization spray box 1, a water tank 2 is fixedly connected to the upper surface of the desulfurization spray box 1, an air intake pipe 3 is fixedly connected to the lower part of the left side of the desulfurization spray box 1, a filter box 5 is fixedly connected to the right side of the lower part of the desulfurization spray box 1, a sealing door 6 is fixedly installed on the lower part of the front of the filter box 5, a connecting conveying pipeline 4 is fixedly connected to the right side of the upper part of the desulfurization spray box 1, the right side of the connecting conveying pipeline 4 is fixedly connected to the left side of the middle part of the filter box 5, a fixing plate 7 is fixedly connected to the rear part of the upper surface of the filter box 5, a cleaning component 8 is fixedly connected to the inner cavity of the fixing plate 7, a filter component 9 is fixedly installed on the upper surface of the central part of the filter box 5 and the filter component 9 is located in front of the fixing plate 7, an exhaust pipe 10 is fixedly connected to the upper surface of the filter component 9, and a blower is fixedly installed inside the exhaust pipe 10;

[0029] Through the action of the blower arranged in the inner cavity of the exhaust pipe 10, the flue gas enters the inner cavity of the desulfurization spray box 1 through the air intake pipe 3, and under the action of the water pump, the liquid flow in the inner cavity of the water tank 2 enters the inner cavity of the desulfurization spray box 1, and through the action of the desulfurization spray box 1, the flue gas entering the inner cavity of the desulfurization spray box 1 is sprayed, so as to preliminarily purify the flue gas, and the purified gas enters the inner cavity of the filter box 5 through the connecting conveying pipe 4, and the entering gas is filtered through the filter component 9, and the filtered gas is discharged through the exhaust pipe 10, and the filter component 9 can be cleaned regularly through the cleaning component 8 to prevent blockage, and after the cleaning is completed, the impurities collected in the lower part of the inner cavity of the filter box 5 can be processed by opening the sealing door 6.

[0030] like Figure 3-Figure 5 As shown, the cleaning assembly 8 includes a motor 81, the front of the motor 81 is fixedly connected to the inner cavity of the upper part of the fixed plate 7, the output end of the motor 81 is fixedly connected to a bevel gear 1 82, the right side of the outer wall of the bevel gear 1 82 is meshed with a bevel gear 2 83, the inner cavity of the bevel gear 2 83 is fixedly connected to a connecting rod 84, the outer wall of the connecting rod 84 is movably sleeved with the inner cavity of the fixed plate 7, the left and right sides of the connecting rod 84 are fixedly connected to bevel gear 3 85, the lower surfaces of the outer walls of the two bevel gears 3 85 are meshed with bevel gears 4 86, the lower surfaces of the two bevel gears 4 86 are fixedly connected to threaded rods 87, and the two The outer walls of the upper and lower parts of the threaded rods 87 are respectively movably sleeved with the inner cavities of the upper and lower parts of the fixed plate 7, the outer walls of the middle parts of the two threaded rods 87 are both threadedly sleeved with a slider 88, the front faces of the two sliders 88 are fixedly connected with a connecting limit plate 89, the outer walls of the two connecting limit plates 89 are respectively movably sleeved with the inner cavities of the left and right parts of the fixed plate 7, the front faces of the two connecting limit plates 89 are fixedly connected with a fixed round rod 810, and the two fixed round rods 810 are located on the left and right sides of the filter assembly 9; the outer wall of the middle part of the filter frame 95 is an annular filter screen plate, and the outer wall of the middle part of the filter frame 95 is movably sleeved with the inner wall of the annular plate 811;

[0031] By starting the motor 81, the bevel gear 1 82 drives the bevel gear 2 83 and the connecting rod 84 to rotate, so that the bevel gear 3 85 on the left and right sides of the connecting rod 84 rotate simultaneously under the drive of the connecting rod 84, so that the two bevel gears 4 86 drive the two threaded rods 87 to rotate, and through the opposite rotation of the two threaded rods 87, the two sliders 1 88 drive the two connecting limit plates 89 to move downward under the action of the slider 2 813 and the slide rail 814, so that the two fixed round rods 810 push the annular plate 811 to move downward, and through the action of the annular plate 811, the annular cleaning brush 812 moves up and down on the outer wall of the middle part of the filter frame 95, so as to clean the impurities filtered and intercepted by the outer wall of the middle part of the filter frame 95, thereby preventing the filter frame 95 from being blocked.

[0032] The lower parts of the outer walls of the two fixed round rods 810 are respectively movably sleeved with the inner cavity of the filter box 5, and the lower parts of the outer walls of the two fixed round rods 810 are movably sleeved with sealing rings, and the outer walls of the two sealing rings are fixedly connected to the inner cavity of the filter box 5;

[0033] Through the effect of the sealing ring, the two fixed round rods 810 move in the inner cavity of the filter box 5 so that the inner cavity of the filter box 5 is always kept sealed, thereby preventing leakage.

[0034] An annular plate 811 is fixedly connected to the opposite surfaces of the lower parts of the two fixed round rods 810, and an annular cleaning brush 812 is fixedly connected to the inner wall of the annular plate 811. The outer wall of the annular cleaning brush 812 and the upper part of the annular plate 811 are inclined.

[0035] Through the action of the annular plate 811 and the annular cleaning brush 812, impurities on the outer wall of the filter frame 95 can be cleaned, thereby preventing the filter frame 95 from being blocked during use. Moreover, since the outer walls of the annular cleaning brush 812 and the upper part of the annular plate 811 are inclined, the annular cleaning brush 812 and the annular plate 811 will not accumulate when cleaning impurities upwards, and the cleaned impurities will fall downward along the inclined surface to the bottom of the inner cavity of the filter box 5.

[0036] The left and right sides of the rear parts of the two connection limit plates 89 are fixedly connected with the second slider 813, and the sides of the four second sliders 813 away from the connection limit plates 89 are slidably connected with the slide rails 814, and the sides of the four slide rails 814 away from the second slider 813 are respectively fixedly connected to the inner cavity of the fixed plate 7;

[0037] Through the action of the slider 813 and the slide rail 814, the connection limit plate 89 can stably drive the fixed round rod 810 to move in the inner cavity of the filter box 5, thereby preventing the annular plate 811 and the annular cleaning brush 812 from tilting when moving up and down with the fixed round rod 810.

[0038] like Figure 6 , Figure 7 As shown, the filter assembly 9 includes a fixed cover 91, the upper surface of the fixed cover 91 is fixedly connected to the lower surface of the exhaust pipe 10, the lower surface of the upper part of the fixed cover 91 overlaps the upper surface of the filter box 5 and the fixed cover 91 is located between the two fixed round rods 810, the front of the outer wall of the upper part of the fixed cover 91 is fixedly connected with an arc-shaped fixed plate 92, the lower surface of the arc-shaped fixed plate 92 overlaps the upper surface of the filter box 5, the inner cavities of the left and right parts of the arc-shaped fixed plate 92 are both threadedly sleeved with screws 93, and the outer walls of the lower parts of the two screws 93 are respectively threadedly sleeved with the inner cavity of the filter box 5;

[0039] By vertically placing the fixing cover 91 and the filter frame 95 into the inner cavity of the filter box 5, the outer wall of the filter frame 95 passes through the inner wall of the annular cleaning brush 812 and moves downward to just above the guide plate 53. At this time, the lower surface of the arc-shaped fixing plate 92 overlaps the upper surface of the filter box 5, and then the arc-shaped fixing plate 92 is fixedly installed on the upper surface of the filter box 5 through the action of two screws 93, so that the fixing cover 91 and the filter frame 95 are fixed in the inner cavity of the filter box 5, thereby facilitating the rapid fixing, installation, disassembly, maintenance and replacement of the filter frame 95.

[0040] The outer wall of the lower part of the fixed cover 91 is fixedly connected with a sealing ring 94, and the outer wall of the sealing ring 94 is movably sleeved with the inner cavity of the filter box 5. The lower surface of the fixed cover 91 is fixedly connected with a filter frame 95, and the outer wall of the filter frame 95 is movably sleeved with the inner cavity of the filter box 5.

[0041] Through the effect of the sealing ring 94, when the fixing cover 91 and the filter frame 95 are fixed in the inner cavity of the filter box 5, the inner cavity of the filter box 5 is sealed, thereby preventing leakage.

[0042] A material collecting box 51 is movably sleeved at the bottom of the inner cavity of the filter box 5 and is located behind the sealing door 6. A handle 52 is fixedly connected to the front of the material collecting box 51, and the front of the handle 52 overlaps the back of the sealing door 6. A material guide plate 53 is fixedly connected to the inner cavity of the filter box 5 and is located between the material collecting box 51 and the filter frame 95.

[0043] Through the action of the guide plate 53, the impurities dropped from above can be gathered and moved downward to the inner cavity of the collection box 51, thereby preventing the impurities from accumulating in the inner cavity of the filter box 5, and through the action of the collection box 51, it is convenient for the staff to clean the impurities regularly.

[0044] The working principle of the utility model is as follows: first, the fixing cover 91 and the filter frame 95 are vertically placed into the inner cavity of the filter box 5, so that the outer wall of the filter frame 95 passes through the inner wall of the annular cleaning brush 812 and moves downward to the top of the guide plate 53, at which time the lower surface of the arc-shaped fixing plate 92 overlaps the upper surface of the filter box 5, and then the arc-shaped fixing plate 92 is fixedly installed on the upper surface of the filter box 5 by the action of two screws 93, so that the fixing cover 91 and the filter frame 95 are fixed in the inner cavity of the filter box 5, wherein the inner cavity of the filter box 5 is sealed by the action of the sealing ring 94. The cavity is sealed. After installation, the blower provided in the inner cavity of the exhaust pipe 10 allows the flue gas to enter the inner cavity of the desulfurization spray box 1 through the air intake pipe 3. Under the action of the water pump, the liquid in the inner cavity of the water tank 2 enters the inner cavity of the desulfurization spray box 1. The flue gas entering the inner cavity of the desulfurization spray box 1 is sprayed by the desulfurization spray box 1, thereby preliminarily purifying the flue gas. The purified gas enters the inner cavity of the filter box 5 through the connecting conveying pipe 4. The gas entering is filtered by the filter frame 95. The filtered gas The gas enters the inner cavity of the filter frame 95 and is discharged upward through the exhaust pipe 10 under the action of the blower. The filtered gas is discharged through the exhaust pipe 10, and the motor 81 can be started at a certain time to make the bevel gear 1 82 drive the bevel gear 2 83 and the connecting rod 84 to rotate, so that the bevel gears 3 85 on the left and right sides of the connecting rod 84 rotate at the same time, so that the two bevel gears 4 86 drive the two threaded rods 87 to rotate, and the two sliders 1 88 rotate in opposite directions through the two threaded rods 87. The two connecting limit plates 89 are driven to move downward under the action of the slider 813 and the slide rail 814, so that the two fixed round rods 810 push the annular plate 811 to move downward, and through the action of the annular plate 811, the annular cleaning brush 812 moves up and down on the outer wall of the middle part of the filter frame 95, so as to clean the impurities filtered and intercepted by the outer wall of the middle part of the filter frame 95, so as to prevent blockage, and after cleaning, the collection box 51 at the bottom of the inner cavity of the filter box 5 can be pulled out by opening the sealing door 6, so as to facilitate the processing of the impurities collected in the inner cavity of the collection box 51.

[0045] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A yellow phosphorus tail gas desulfurization device, comprising a desulfurization spray box (1), characterized in that: The upper surface of the desulfurization spray box (1) is fixedly connected to a water tank (2); the lower part of the left side of the desulfurization spray box (1) is fixedly connected to an air intake pipe (3); the right side of the lower part of the desulfurization spray box (1) is fixedly connected to a filter box (5); the lower part of the front of the filter box (5) is fixedly installed with a sealing door (6); the right side of the upper part of the desulfurization spray box (1) is fixedly connected to a connecting and conveying pipe (4); the right side of the connecting and conveying pipe (4) is fixedly connected to the left side of the middle part of the filter box (5); the rear part of the upper surface of the filter box (5) is fixedly connected to a fixing plate (7); the inner cavity of the fixing plate (7) is fixedly connected to a cleaning component (8); the upper surface of the central part of the filter box (5) is fixedly installed with a filter component (9) and the filter component (9) is located in front of the fixing plate (7); the upper surface of the filter component (9) is fixedly connected to an exhaust pipe (10); and a blower is fixedly installed inside the exhaust pipe (10).

2. A yellow phosphorus tail gas desulfurization device according to claim 1, characterized in that: The cleaning assembly (8) comprises a motor (81), the front face of the motor (81) is fixedly connected to the inner cavity of the upper part of the fixed plate (7), the output end of the motor (81) is fixedly connected to a bevel gear 1 (82), the right side of the outer wall of the bevel gear 1 (82) is meshed with a bevel gear 2 (83), the inner cavity of the bevel gear 2 (83) is fixedly connected to a connecting rod (84), the outer wall of the connecting rod (84) is movably sleeved with the inner cavity of the fixed plate (7), the left and right sides of the connecting rod (84) are fixedly connected to bevel gear 3 (85), the lower surfaces of the outer walls of the two bevel gears 3 (85) are meshed with bevel gear 4 (86), the lower surfaces of the two bevel gears 4 (86) are fixedly connected to threaded rods (87), the upper and lower parts of the two threaded rods (87) are The outer walls are respectively movably connected to the inner cavities of the upper and lower parts of the fixed plate (7); the outer walls of the middle parts of the two threaded rods (87) are threadedly connected with a slider (88); the front faces of the two sliders (88) are fixedly connected with a connecting limit plate (89); the outer walls of the two connecting limit plates (89) are respectively movably connected to the inner cavities of the left and right parts of the fixed plate (7); the front faces of the two connecting limit plates (89) are fixedly connected with a fixed round rod (810), and the two fixed round rods (810) are located on the left and right sides of the filter assembly (9); the lower parts of the outer walls of the two fixed round rods (810) are respectively movably connected to the inner cavities of the filter box (5); the lower parts of the outer walls of the two fixed round rods (810) are movably connected with a sealing ring; the outer walls of the two sealing rings are fixedly connected to the inner cavities of the filter box (5).

3. A yellow phosphorus tail gas desulfurization device according to claim 2, characterized in that: An annular plate (811) is fixedly connected to the opposite surfaces of the lower parts of the two fixed round rods (810), an annular cleaning brush (812) is fixedly connected to the inner wall of the annular plate (811), and the outer wall of the annular cleaning brush (812) and the upper part of the annular plate (811) are inclined.

4. A yellow phosphorus tail gas desulfurization device according to claim 3, characterized in that: The left and right sides of the rear parts of the two connection limit plates (89) are fixedly connected with a second slider (813), and the sides of the four second sliders (813) away from the connection limit plates (89) are slidably connected with a slide rail (814), and the sides of the four slide rails (814) away from the second slider (813) are respectively fixedly connected to the inner cavity of the fixed plate (7).

5. A yellow phosphorus tail gas desulfurization device according to claim 3, characterized in that: The filter assembly (9) comprises a fixed cover (91), the upper surface of the fixed cover (91) is fixedly connected to the lower surface of the exhaust pipe (10), the lower surface of the upper part of the fixed cover (91) overlaps the upper surface of the filter box (5), and the fixed cover (91) is located between two fixed round rods (810), the front side of the outer wall of the upper part of the fixed cover (91) is fixedly connected to an arc-shaped fixed plate (92), the lower surface of the arc-shaped fixed plate (92) overlaps the upper surface of the filter box (5), the inner cavities of the left and right parts of the arc-shaped fixed plate (92) are both threadedly sleeved with screws (93), and the outer walls of the lower parts of the two screws (93) are respectively threadedly sleeved with the inner cavities of the filter box (5).

6. A yellow phosphorus tail gas desulfurization device according to claim 5, characterized in that: The outer wall of the lower part of the fixed cover (91) is fixedly connected to a sealing ring (94), and the outer wall of the sealing ring (94) is movably sleeved with the inner cavity of the filter box (5). The lower surface of the fixed cover (91) is fixedly connected to a filter frame (95), and the outer wall of the filter frame (95) is movably sleeved with the inner cavity of the filter box (5).

7. A yellow phosphorus tail gas desulfurization device according to claim 6, characterized in that: The outer wall of the middle part of the filter frame (95) is an annular filter screen plate, and the outer wall of the middle part of the filter frame (95) is movably sleeved with the inner wall of the annular plate (811).

8. A yellow phosphorus tail gas desulfurization device according to claim 6, characterized in that: A material collecting box (51) is movably sleeved on the bottom of the inner cavity of the filter box (5), and the material collecting box (51) is located behind the sealing door (6); a handle (52) is fixedly connected to the front of the material collecting box (51), and the front of the handle (52) overlaps the back of the sealing door (6); a material guide plate (53) is fixedly connected to the inner cavity of the filter box (5), and the material guide plate (53) is located between the material collecting box (51) and the filter frame (95).

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