A washing tower manhole with strong sealing performance

Abstract

This invention discloses a highly airtight manhole for a scrubbing tower, relating to the field of scrubbing tower technology. It includes a manhole section with a manhole cover plate on its front side and an operating handle on the front side of the cover plate. It also includes a sealing assembly comprising a sealing ring, a guide hole, a pressure ring, a pressure groove, a pressure block, a pressure spring, and a flow guide groove. The sealing ring is fixedly installed on the rear side of the manhole cover plate. The guide hole is located at the top rear side of the manhole cover plate. The pressure ring is fixedly installed on the inner wall of the manhole section. The pressure spring deforms and stores force under the pressure of the pressure block. Simultaneously, the pressure block, in conjunction with the elastic force of the pressure spring, compresses the sealing ring, causing deformation. After the guide hole is exposed, residual toxic gas inside the manhole section will first be discharged upwards through the guide hole, thus avoiding the problem of direct toxic gas leakage and burns during maintenance and eliminating the risk of gas impact.

Description

Technical Field

[0001] This invention belongs to the field of scrubbing towers, specifically relating to a scrubbing tower manhole with strong sealing performance. Background Technology

[0002] Scrubbers are commonly used equipment for filtering and separating waste gas, and scrubbers are usually equipped with manholes as passageways for tower inspection and maintenance.

[0003] Patent publication number CN214437797U relates to a high-sealing, quick-release, visible manhole for a scrubbing tower, comprising a scrubbing tower and a maintenance manhole. The maintenance manhole is located on the outer wall of the scrubbing tower, and a viewing window is provided on the manhole. A transparent viewing window baffle is installed on the outer side of the viewing window. A positioning mounting ring is fitted around the maintenance manhole, and a sealing mounting ring is fitted around the outer side of the positioning mounting ring. This patent provides a high-sealing, quick-release, visible manhole for a scrubbing tower. The manhole is sealed and installed on the scrubbing tower through the cooperation of the positioning mounting ring and the sealing mounting ring. The viewing window on the manhole is located inside the viewing window connecting flange. The viewing window connecting flange is sealed and connected to the connecting ring on the positioning mounting ring and the baffle mounting ring on the transparent viewing window baffle through a first sealing ring and a second sealing ring, respectively. This design ensures high sealing performance of the manhole and features a simple structure that facilitates disassembly and assembly.

[0004] In existing technologies, the manhole is sealed by a baffle ring installed on a transparent viewing window, which ensures high sealing performance. However, when the manhole cover is opened for maintenance, the toxic gases remaining in the manhole section will directly impact the operator, which can easily cause chemical burns. Furthermore, the long-term soaking of the sealing ring and pressure ring by the accumulated washing liquid will reduce the sealing effect. At the same time, the lack of support during installation makes the manhole cover prone to slight rotation and misalignment. Summary of the Invention

[0005] The purpose of this invention is to solve at least one of the problems in the prior art and to provide a washing tower manhole with strong sealing performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A highly airtight scrubbing tower manhole includes a manhole section with a manhole cover plate on its front side and an operating handle on its front side. The manhole cover plate also includes a sealing assembly comprising a sealing ring, a guide hole, a pressure ring, a pressure groove, a pressure block, a pressure spring, and a flow guide groove. The sealing ring is fixedly installed on the rear side of the manhole cover plate. The guide hole is located at the top rear side of the manhole cover plate. The pressure ring is fixedly installed on the inner wall of the manhole section. The pressure groove is located on the front side of the pressure ring. The pressure block is slidably installed on the inner wall of the pressure groove. The pressure spring is located between the pressure groove and the pressure block. The flow guide groove is located on the inner wall of the manhole section. The manhole section and the manhole cover plate are connected by bolts and nuts. The pressure spring deforms and stores force under the pressure of the pressure block, while the pressure block, in conjunction with the elastic force of the pressure spring, compresses the sealing ring, causing deformation.

[0007] Furthermore, the pressing block abuts against the sealing ring, which is made of corrosion-resistant and acid- and alkali-resistant rubber. The sealing ring is used to increase the sealing between the manhole section and the manhole cover. When the manhole cover moves forward, the guide hole will be exposed first. After the guide hole is exposed, the toxic gas remaining inside the manhole section will be discharged upward through the guide hole. After the toxic gas is discharged upward, the manhole cover can be pulled forward again.

[0008] Furthermore, a sealing strip is provided between the guide hole and the manhole section. The sealing strip can increase the sealing between the guide hole and the manhole section. The guide hole is used to discharge residual toxic gas upward. The manhole cover plate is in contact with the inner wall of the manhole section. The inner wall of the guide groove is set as an inclined surface. The pressure block will move forward under the elastic force of the pressure spring. The forward movement of the pressure block will help push the sealing ring and the pressure ring to separate.

[0009] Furthermore, it also includes a flow guiding component and a loading and unloading component. The flow guiding component is used to reduce the accumulation of liquid inside the manhole section, and the loading and unloading component is used to improve the installation efficiency of the manhole cover. The flow guiding component includes a linkage rod, a linkage roller, and a flow guide plate. The linkage rod is fixedly installed on the rear side of the pressure block, the linkage roller is rotatably installed on the rear side of the linkage rod, and the flow guide plate is rotatably installed on the inner wall of the flow guide groove. After the linkage roller disengages from contact with the flow guide plate, the flow guide plate rotates clockwise under the action of the torsion spring.

[0010] Furthermore, the flow guiding assembly also includes a movable hole, a piston block, a connecting plate, a connecting spring, and a limiting groove. The movable hole is opened on the inner wall of the manhole cover plate, the piston block is slidably installed on the inner wall of the movable hole, the connecting plate is fixedly installed on the inner wall of the manhole cover plate, the connecting spring is disposed between the piston block and the connecting plate, and the limiting groove is opened on the inner wall of the manhole cylinder section. When the linkage roller moves backward, it will contact the inclined surface of the flow guiding plate and squeeze the flow guiding plate. The flow guiding plate will rotate counterclockwise due to the squeezing of the linkage roller.

[0011] Furthermore, the piston block contacts the limiting groove, and a torsion spring is provided between the guide plate and the guide groove. The torsion spring can drive the guide plate to reset. The linkage roller abuts against the guide plate. The connecting spring is pulled by the piston block to deform and store force. At the same time, the piston block moves downward and contacts the limiting groove to limit the manhole cover.

[0012] Furthermore, the loading and unloading assembly includes a support groove, a through hole, a fixing plate, a measuring frame, a measuring spring, and a linear damper. The support groove is located on the rear side of the manhole cover, the through hole is located on the front side of the manhole section, the fixing plate is fixedly installed on the rear side of the manhole section, the measuring frame is slidably installed on the left side of the manhole section, the measuring spring is disposed between the fixing plate and the measuring frame, and the linear damper is disposed on the top front side of the fixing plate. The free end of the linear damper abuts against the support groove, and the manhole cover contacts the free end of the linear damper, so that the free end of the linear damper can support the manhole cover. When the manhole cover enters the manhole section, it continuously abuts against the free end of the linear damper.

[0013] Furthermore, the measuring frame contacts the manhole section, the measuring frame contacts the manhole cover, and the linear damper contacts the manhole section. If the manhole cover and the manhole section are not properly fitted, the measuring frame will be unable to move to the right and reset.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes the elastic force of a pressure block and a pressure spring to deform the sealing ring, thereby improving the sealing performance between the manhole section and the manhole cover, reducing the risk of leakage in the scrubbing tower. When disassembling the manhole cover, the manhole cover moves forward, exposing the guide hole first. After the guide hole is exposed, the toxic gas remaining inside the manhole section will first be discharged upward through the guide hole, thus avoiding the problem of direct exposure of toxic gas and burns during maintenance. The forward movement of the pressure block will assist in separating the sealing ring from the pressure ring, thereby preventing the sealing ring from sticking and jamming under pressure, reducing the resistance to pulling out the manhole cover, and further facilitating the removal of the manhole cover from the manhole section. The inner wall of the guide groove is set as a slope, which can prevent the washing liquid from accumulating at the bottom of the manhole section, thereby reducing the long-term soaking of the sealing ring by the washing liquid and extending the service life of the sealing ring.

[0015] 2. In this invention, when the manhole cover is disassembled, the guide plate is rotated clockwise and restored to a horizontal state, which can reduce the risk of the operator slipping when entering the manhole section due to the inclined design of the guide channel, thereby improving the safety of the operator entering and exiting. After the manhole cover is installed, the inclined guide plate can work with the guide channel to guide the washing liquid, further improving the guiding effect of the guide channel.

[0016] 3. This invention, by moving the piston block downwards to contact the limiting groove and limit the manhole cover, can help ensure the manhole seal and reduce the risk of leakage. In addition, the air pressure self-locking can prevent the operator from opening the cover under pressure and causing the leakage of toxic gas when the air pressure detection device fails.

[0017] 4. This invention, by continuously contacting the free end of the linear damper with the manhole cover, causes the manhole cover to move slowly to the rear under the damping action of the linear damper itself, thereby avoiding damage to the sealing ring caused by rapid impact of the manhole cover.

[0018] 5. This invention allows the manhole cover to contact the free end of the linear damper, enabling the free end of the linear damper to support the manhole cover. This prevents slight rotation of the manhole cover during installation, reducing the risk of leakage caused by misalignment. If the manhole cover and manhole cylinder are not properly fitted, the measuring frame will not be able to move to the right to reset, providing a clear reminder to the operator to correct any misalignment in a timely manner. Furthermore, no additional testing instruments are required. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall invention; Figure 2 This is a schematic diagram of a half-section of the manhole tube section in this invention; Figure 3 This is a schematic diagram of the manhole cylinder section and manhole cover plate in this invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of section A in the middle; Figure 5 This is a schematic diagram of a half-section of the pressure ring in this invention; Figure 6 This is a schematic diagram showing the positions of the manhole cover and the operating handle in this invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of part B in the middle.

[0020] Figure label: 1. Manhole section; 2. Manhole cover; 3. Operating handle; 31. Bolt; 4. Nut; 5. Sealing ring; 6. Guide hole; 7. Pressure ring; 8. Pressure groove; 9. Pressure block; 10. Pressure spring; 101. Flow guide groove; 111. Linkage rod; 112. Linkage roller; 113. Flow guide plate; 114. Moving hole; 115. Piston block; 116. Connecting plate; 117. Connecting spring; 118. Limiting groove; 121. Support groove; 122. Through hole; 123. Fixing plate; 124. Measuring frame; 125. Measuring spring; 126. Linear damper. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0022] like Figures 1 to 7 As shown, a washing tower manhole with strong sealing performance in this embodiment includes a manhole section 1, a manhole cover plate 2 on the front side of the manhole section 1, an operating handle 3 on the front side of the manhole cover plate 2, and a sealing assembly. The sealing assembly includes a sealing ring 5, a guide hole 6, a pressure ring 7, a pressure groove 8, a pressure block 9, a pressure spring 10, and a flow guide groove 101. The sealing ring 5 is fixedly installed on the rear side of the manhole cover plate 2, the guide hole 6 is opened at the top of the rear side of the manhole cover plate 2, the pressure ring 7 is fixedly installed on the inner wall of the manhole section 1, the pressure groove 8 is opened on the front side of the pressure ring 7, and the pressure block 9 is slidably installed on the manhole section 1. The inner wall of the pressure groove 8 has a pressure spring 10 set between the pressure groove 8 and the pressure block 9. The guide groove 101 is opened on the inner wall of the manhole section 1. The manhole section 1 and the manhole cover plate 2 are connected by bolts 31 and nuts 4. The pressure spring 10 is deformed and stores force by the pressure of the pressure block 9. At the same time, the pressure block 9 cooperates with the elastic force of the pressure spring 10 to compress the sealing ring 5 to deform, thereby improving the sealing performance between the manhole section 1 and the manhole cover plate 2 and reducing the risk of leakage in the scrubbing tower. Matching sealing rubber parts are provided between the manhole section 1 and the manhole cover plate 2. The sealing ring 5 only serves as an auxiliary seal.

[0023] The pressure block 9 abuts against the sealing ring 5. The sealing ring 5 is made of acid and alkali resistant rubber. The sealing ring 5 is used to increase the sealing between the manhole section 1 and the manhole cover 2. When the manhole cover 2 moves forward, the guide hole 6 will be exposed first. After the guide hole 6 is exposed, the toxic gas remaining inside the manhole section 1 will be discharged upward through the guide hole 6. After the toxic gas is discharged upward, the manhole cover 2 can be pulled forward to avoid the problem of toxic gas directly leaking out and burning the face during the moment of the cover being exposed, and to eliminate the risk of gas impact during maintenance.

[0024] A sealing strip is provided between the guide hole 6 and the manhole section 1. The sealing strip can increase the sealing between the guide hole 6 and the manhole section 1. The guide hole 6 is used to discharge residual toxic gas upward. The manhole cover 2 contacts the inner wall of the manhole section 1. The inner wall of the guide groove 101 is set as a slope to avoid the accumulation of washing liquid at the bottom of the manhole section 1, thereby reducing the long-term soaking of the sealing ring 5 by the accumulation of washing liquid and extending the service life of the sealing ring 5. The pressure block 9 will move forward under the elastic force of the pressure spring 10. The forward movement of the pressure block 9 will help push the sealing ring 5 and the pressure ring 7 to separate, thereby preventing the sealing ring 5 from sticking and getting stuck after being pressed, reducing the resistance to pulling out the manhole cover 2, and further facilitating the removal of the manhole cover 2 from the manhole section 1.

[0025] In this embodiment, during operation: When installing the manhole cover 2, multiple people work together to place the manhole cover 2 inside the manhole cylinder section 1 and push the manhole cover 2 to the rear. The rearward movement of the manhole cover 2 will cause the sealing ring 5 to move to the rear. The rearward movement of the sealing ring 5 will contact the pressure block 9 and squeeze the pressure block 9. The pressure block 9 will move to the rear due to the pressure of the sealing ring 5. The rearward movement of the pressure block 9 will squeeze the pressure spring 10. The pressure spring 10 will deform and store force due to the pressure of the pressure block 9. At the same time, the pressure block 9 and the pressure spring 10 will squeeze the sealing ring 5 to deform, thereby increasing the sealing between the manhole cylinder section 1 and the manhole cover 2. After the manhole cover 2 and the manhole cylinder section 1 are fitted together, the bolt 31 and nut 4 are connected by tools to complete the installation of the manhole cover 2 and the manhole cylinder section 1. When disassembling the manhole cover 2; The operator uses tools to separate the bolt 31 from the nut 4. After the bolt 31 and nut 4 are separated, the manhole cover 2 is pulled forward. The manhole cover 2 will first expose the guide hole 6 when it moves forward. After the guide hole 6 is exposed, the toxic gas remaining inside the manhole cylinder 1 will first be discharged upward through the guide hole 6. After the toxic gas is discharged upward, the manhole cover 2 can be pulled forward to complete the disassembly of the manhole cover 2. When the bolt 31 and nut 4 are separated, the pressure block 9 will move forward under the elastic force of the pressure spring 10. The forward movement of the pressure block 9 will help push the sealing ring 5 and the pressure ring 7 to separate, thereby making it easier to remove the manhole cover 2 from the manhole section 1. At the same time, the inner wall of the guide groove 101 is set as a slope, which can prevent the washing liquid from accumulating at the bottom of the manhole section 1, reduce the long-term soaking of the sealing ring 5 and the pressure ring 7 by acid and alkali liquid, and further improve the performance and life of the seal. Example

[0026] like Figures 1 to 7As shown, this embodiment of a washing tower manhole with strong sealing performance includes all the technical features of Embodiment 1, and in addition, it also includes a flow guiding component and a loading and unloading component. The flow guiding component is used to reduce liquid accumulation inside the manhole section 1, and the loading and unloading component is used to improve the installation efficiency of the manhole cover plate 2. The flow guiding component includes a linkage rod 111, a linkage roller 112, and a flow guiding plate 113. The linkage rod 111 is fixedly installed on the rear side of the pressure block 9, the linkage roller 112 is rotatably installed on the rear side of the linkage rod 111, and the flow guiding plate 113 is rotatably installed on the inner wall of the flow guiding groove 101. When the manhole cover plate 2 is removed, the flow guiding plate 113 rotates clockwise and returns to a horizontal state, which can reduce the operator's slippage caused by the inclined setting of the flow guiding groove 101 when entering the manhole section 1, thereby improving the safety of the operator entering and exiting.

[0027] The flow guiding assembly also includes a movable hole 114, a piston block 115, a connecting plate 116, a connecting spring 117, and a limiting groove 118. The movable hole 114 is opened on the inner wall of the manhole cover 2. The piston block 115 is slidably installed on the inner wall of the movable hole 114. The connecting plate 116 is fixedly installed on the inner wall of the manhole cover 2. The connecting spring 117 is located between the piston block 115 and the connecting plate 116. The limiting groove 118 is opened on the inner wall of the manhole cylinder 1. When the linkage roller 112 moves backward, it will contact the inclined surface of the flow guiding plate 113 and squeeze the flow guiding plate 113. The flow guiding plate 113 rotates counterclockwise due to the squeezing of the linkage roller 112. After the manhole cover 2 is installed, the tilt of the flow guiding plate 113 can cooperate with the flow guiding groove 101 to guide the washing liquid, further improving the flow guiding effect of the flow guiding groove 101.

[0028] The piston block 115 contacts the limiting groove 118. A torsion spring is provided between the guide plate 113 and the guide groove 101. The torsion spring can drive the guide plate 113 to reset. The linkage roller 112 abuts against the guide plate 113. The connecting spring 117 is deformed and stores force by the pull of the piston block 115. At the same time, the piston block 115 moves downward and contacts the limiting groove 118 and limits the manhole cover 2. This can help ensure the manhole is sealed and reduce the risk of leakage. In addition, the air pressure self-locking can prevent the operator from opening the cover under pressure and causing toxic gas leakage when the air pressure detection device fails.

[0029] The loading and unloading assembly includes a support groove 121, a through hole 122, a fixing plate 123, a measuring frame 124, a measuring spring 125, and a linear damper 126. The support groove 121 is located on the rear side of the manhole cover 2, the through hole 122 is located on the front side of the manhole section 1, the fixing plate 123 is fixedly installed on the rear side of the manhole section 1, the measuring frame 124 is slidably installed on the left side of the manhole section 1, the measuring spring 125 is disposed between the fixing plate 123 and the measuring frame 124, and the linear damper 126 is disposed on the top front side of the fixing plate 123. The free end of the linear damper 126... The linear damper 126, which abuts against the support groove 121, can support the manhole cover 2, thereby preventing slight rotation of the manhole cover 2 during installation. When the manhole cover 2 enters the manhole section 1, it continuously abuts against the free end of the linear damper 126. The continuous contact between the manhole cover 2 and the free end of the linear damper 126 causes the manhole cover 2 to move slowly to the rear under the damping action of the linear damper 126 itself, thereby preventing the sealing ring 5 from being damaged by rapid impact. The through hole 122 is used to assist in placing the linear damper 126.

[0030] The measuring frame 124 contacts the manhole cylinder section 1, the measuring frame 124 contacts the manhole cover plate 2, and the linear damper 126 contacts the manhole cylinder section 1. If the manhole cover plate 2 and the manhole cylinder section 1 are not properly fitted, the measuring frame 124 will not be able to move to the right to reset. This visually reminds the operator to correct any improper assembly in a timely manner, and no additional testing instruments are required.

[0031] In this embodiment, when the pressing block 9 moves forward, it will drive the linkage rod 111 to move forward. The linkage rod 111 moving forward will drive the linkage roller 112 to move forward. The linkage roller 112 moving forward will disengage from the guide plate 113. After the linkage roller 112 disengages from the guide plate 113, the guide plate 113 rotates clockwise under the action of the torsion spring. The guide plate 113 rotates clockwise and returns to a horizontal state, reducing the risk of the operator slipping when entering the manhole section 1 due to the inclined setting of the guide groove 101. When the pressing block 9 moves backward, it will drive the linkage rod 111 to move backward. The linkage rod 111 moving backward will drive the linkage roller 112 to move backward. The linkage roller 112 moving backward will contact the inclined surface of the guide plate 113 and squeeze the guide plate 113. The guide plate 113 rotates counterclockwise due to the pressure of the linkage roller 112. The counterclockwise rotation of the guide plate 113 will compress the torsion spring, causing deformation and storing force. At the same time, the guide plate 113 tilts in conjunction with the guide groove 101 to guide the washing liquid. When the washing tower is running, the manhole section 1 is connected to the tower body and there will be air pressure. The air pressure inside the manhole section 1 will compress the piston block 115. The piston block 115 moves downward due to the air pressure. The downward movement of the piston block 115 will pull the connecting spring 117. The connecting spring 117 deforms and stores force due to the pull of the piston block 115. At the same time, the downward movement of the piston block 115 will contact the limiting groove 118 and limit the manhole cover plate 2.

[0032] Before placing the manhole cover 2 into the manhole section 1, push the measuring frame 124 to the left. The leftward movement of the measuring frame 124 will pull the measuring spring 125. The measuring spring 125 will deform and store force due to the pull of the measuring frame 124. At the same time, after the measuring frame 124 moves to the left, align the support groove 121 with the linear damper 126, and then place the manhole cover 2 into the manhole section 1. When the manhole cover 2 enters the manhole section 1, it will continuously contact the free end of the linear damper 126. The continuous contact between the manhole cover 2 and the free end of the linear damper 126 will cause the manhole cover 2 to slowly move backward under the damping action of the linear damper 126 itself. At the same time, the contact between the manhole cover 2 and the free end of the linear damper 126 will allow the free end of the linear damper 126 to support the manhole cover 2, thereby preventing the manhole cover 2 from rotating slightly during installation. Furthermore, after the manhole cover 2 and the manhole cylinder section 1 are installed and fitted together, the measuring frame 124 will move to the right and reset under the elastic force of the measuring spring 125. The measuring frame 124 will move to the right and reset, and will fit with the manhole cylinder section 1 and the manhole cover 2. If the manhole cover 2 and the manhole cylinder section 1 are not fitted together, the measuring frame 124 will not be able to move to the right and reset, thus reminding the operator that there is a large gap between the manhole cover 2 and the manhole cylinder section 1.

[0033] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0034] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A manhole for a scrubbing tower with strong sealing performance, comprising a manhole section (1), wherein a manhole cover plate (2) is provided on the front side of the manhole section (1), and an operating handle (3) is provided on the front side of the manhole cover plate (2), characterized in that, It also includes a sealing assembly, a flow guiding assembly, and a loading and unloading assembly. The sealing assembly includes a sealing ring (5), a guide hole (6), a pressure ring (7), a pressure groove (8), a pressure block (9), a pressure spring (10), and a flow guiding groove (101). The sealing ring (5) is fixedly installed on the rear side of the manhole cover (2). The guide hole (6) is opened on the top of the rear side of the manhole cover (2). The pressure ring (7) is fixedly installed on the inner wall of the manhole cylinder (1). The pressure groove (8) is opened on the front side of the pressure ring (7). The pressure block (9) is slidably installed on the inner wall of the pressure groove (8). The pressure spring (10) is arranged between the pressure groove (8) and the pressure block (9). The flow guiding groove (101) is opened on the inner wall of the manhole cylinder (1). The manhole cylinder (1) and the manhole cover (2) are connected by bolts (31) and nuts (4).

2. The manhole of a scrubbing tower with strong sealing performance according to claim 1, characterized in that, The pressing block (9) abuts against the sealing ring (5), which is made of acid and alkali resistant rubber. The sealing ring (5) is used to increase the sealing between the manhole section (1) and the manhole cover (2).

3. The manhole of a scrubbing tower with strong sealing performance according to claim 2, characterized in that, A sealing strip is provided between the guide hole (6) and the manhole section (1). The guide hole (6) is used to discharge residual toxic gas upward. The manhole cover (2) is in contact with the inner wall of the manhole section (1). The flow guiding component is used to reduce the liquid accumulation inside the manhole section (1). The loading and unloading component is used to improve the installation efficiency of the manhole cover (2).

4. The manhole of a scrubbing tower with strong sealing performance according to claim 3, characterized in that, The flow guiding assembly includes a linkage rod (111), a linkage roller (112), and a flow guiding plate (113). The linkage rod (111) is fixedly installed on the rear side of the pressure block (9), the linkage roller (112) is rotatably installed on the rear side of the linkage rod (111), and the flow guiding plate (113) is rotatably installed on the inner wall of the flow guiding groove (101).

5. The manhole of a scrubbing tower with strong sealing performance according to claim 4, characterized in that, The flow guiding assembly also includes a moving hole (114), a piston block (115), a connecting plate (116), a connecting spring (117), and a limiting groove (118). The moving hole (114) is opened on the inner wall of the manhole cover (2). The piston block (115) is slidably installed on the inner wall of the moving hole (114). The connecting plate (116) is fixedly installed on the inner wall of the manhole cover (2). The connecting spring (117) is disposed between the piston block (115) and the connecting plate (116). The limiting groove (118) is opened on the inner wall of the manhole cylinder (1).

6. The manhole of a scrubbing tower with strong sealing performance according to claim 5, characterized in that, The piston block (115) contacts the limiting groove (118), a torsion spring is provided between the guide plate (113) and the guide groove (101), and the linkage roller (112) abuts against the guide plate (113).

7. A manhole for a scrubbing tower with strong sealing performance according to claim 6, characterized in that, The loading and unloading assembly includes a support groove (121), a through hole (122), a fixing plate (123), a measuring frame (124), a measuring spring (125), and a linear damper (126). The support groove (121) is located on the rear side of the manhole cover plate (2), the through hole (122) is located on the front side of the manhole cylinder section (1), the fixing plate (123) is fixedly installed on the rear side of the manhole cylinder section (1), the measuring frame (124) is slidably installed on the left side of the manhole cylinder section (1), the measuring spring (125) is located between the fixing plate (123) and the measuring frame (124), and the linear damper (126) is located on the top front side of the fixing plate (123). The free end of the linear damper (126) abuts against the support groove (121).

8. A manhole for a scrubbing tower with strong sealing performance according to claim 7, characterized in that, The measuring frame (124) is in contact with the manhole section (1), the measuring frame (124) is in contact with the manhole cover (2), and the linear damper (126) is in contact with the manhole section (1).

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