Multifunctional manhole cover sealing and toxic gas discharging device

Abstract

Multifunctional manhole cover sealing and toxic gas exhausting device. On the TPU sealing round pad (1), there are TPU exhaust holes (4), and a TPU exhaust frame (8) and an air frame sealing ring (9) are fixed. The exhaust fan (28) is connected and fixed to the TPU exhaust frame (8). On the TPU sealing round pad (1), there are vibrating rod sockets (5) and rod orifice sealing covers (6), and a periscope observation hole (15) and an observation hole sealing cover (16) are also provided. The sealing water bag ring (3) is fixed to the TPU sealing round pad (1) by a water bag fixing belt (29), and the water bag orifice sealing cover (7) can fill and discharge the water in the sealing water bag ring (3). The diameter of the TPU sealing round pad (1) is larger than the manhole cover metal frame (2) and the manhole (22), and it completely seals and covers the manhole cover metal frame (2) and the manhole (22), ensuring that fresh air on the ground will not enter the manhole. The exhaust fan (28) can efficiently suck and discharge the toxic gas in the manhole (22) and the underground drainage pipe (23) to the greatest extent, reducing the risk of harm to people from the toxic gas in the manhole pipe to the lowest level and greatly improving the safety guarantee.

Description

Technical Field

[0001] The present invention relates to the field of municipal road drainage engineering, specifically a multi-functional manhole cover sealing and poisonous gas discharging device. Background Art

[0002] Currently, for the inspection and repair of municipal road drainage engineering, trenchless construction is mostly adopted. After the manhole cover is opened by maintenance personnel of municipal engineering for construction operations, although a poisonous gas detector is used for monitoring and an exhaust fan sucks air from the manhole, and construction workers take various self-protection measures, due to the harsh environment of the manhole bottom and underground drainage pipes, various poisonous gases generated by the sludge at the manhole bottom and in the drainage pipes often affect the safety of the operators at the manhole bottom. Because when the exhaust fan sucks air from the manhole, the manhole is wide open, the exhaust fan pipe is small, and the exhaust fan sucks air inside the manhole, fresh air outside the manhole also flows in around the exhaust fan pipe, resulting in low efficiency of the exhaust fan and making it difficult to exhaust all the poisonous gases inside the manhole. Moreover, various poisonous gases stored in the sludge at the manhole bottom and in the drainage pipes have not dissipated. When construction workers enter the manhole bottom and underground drainage pipes for operation, they stir the static sludge at the manhole bottom and in the drainage pipes, and a large amount of various poisonous gases are emitted at any time, putting the operators at the manhole bottom often at risk of poisoning. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-functional manhole cover sealing and poisonous gas discharging device. When the multi-functional manhole cover sealing and poisonous gas discharging device works, it can seal the air inside and outside the manhole, isolate the inflow of air outside the manhole, enable the exhaust fan to be inside the manhole, maximize the poisonous gas discharging effect inside the manhole, and use a vibrating rod to emit various poisonous gases stored in the sludge at the manhole bottom and in the drainage pipes. At the same time, use the exhaust fan to quickly discharge the poisonous gases generated by the vibrating sludge inside the manhole, ensuring that no poisonous gases are emitted within the manual operation range of the operators inside the manhole and protecting the safety of the operators.

[0004] To achieve the above object, the present invention adopts the following solution: A multi-functional manhole cover sealing and poison gas exhausting device, which comprises a TPU sealing round pad (1), a manhole metal frame (2), a sealing water bag ring (3), a TPU exhaust hole (4), a vibrating rod socket (5), a rod guiding tube (10) and a vibrating rod (19). It is characterized in that: on the TPU sealing round pad (1), a TPU exhaust hole (4) is provided, on the TPU exhaust hole (4), a TPU exhaust frame (8) and an air frame sealing ring (9) are fixed, an exhaust fan (28) is connected and fixed on the TPU exhaust frame (8), and on the TPU sealing round pad (1), a vibrating rod socket (5) and a rod mouth sealing cover (6) are provided, and a periscope observation hole (15) and an observation hole sealing cover (16) are also provided; on the TPU sealing round pad (1), a sealing water bag ring (3) is provided, and under the TPU sealing round pad (1), a manhole metal frame (2) is provided; the diameter of the TPU sealing round pad (1) is larger than that of the manhole metal frame (2) and the manhole (22), and it can completely seal and cover the manhole metal frame (2) and the manhole (22), ensuring that fresh air on the ground does not enter the manhole, and the exhaust fan (28) can efficiently suck and discharge the poison gas in the manhole (22) and the underground drain pipe (23) to the maximum extent.

[0005] The manhole metal frame (2) is welded with a metal bar (18), on the manhole metal frame (2), a metal frame exhaust hole (17) is provided, and the rod guiding tube (10) under the manhole (22) is fixed with a frame tube positioning hole (20) and a hook rope positioning hole (21); the horizontal displacement of the manhole metal frame (2) on the manhole (22) is prevented by the metal frame positioning hole (27) and the wellhead limit pin (26) on the manhole metal frame (2). On the rod guiding tube (10), a guiding tube hook ring (11) is provided, and it is fixed on the hook rope positioning hole (21) of the manhole metal frame (2) with a guiding tube hook rope (12). The vibrating rod (19) enters the underground drain pipe (23) along the rod guiding tube (10) to vibrate and discharge the poison gas in the drain pipe sludge (24), and the vibrating rod (19) directly vibrates and discharges the poison gas in the manhole bottom sludge (25). The poison gas in the manhole (22) is efficiently discharged by the exhaust fan (28) on the TPU sealing round pad (1); the guiding tube positioning hook (13) is connected to the guiding tube adjusting hole (14) and fixed on the frame tube positioning hole (20) of the manhole metal frame (2) to make the rod guiding tube (10) suitable for the height of the underground drain pipe (23) and the manhole (22), facilitating the smooth entry of the vibrating rod (19) into the underground drain pipe (23).

[0006] On the sealed water bag ring (3), there is a water bag mouth cover (7), and the sealed water bag ring (3) is fixed on the TPU sealing round gasket (1) with a water bag fixing belt (29) to improve the natural fitting and sealing effect between the TPU sealing round gasket (1) and the ground of the manhole opening (22); beside the vibrating rod socket (5) and the periscope observation hole (15), there are a rod socket sealing cover (6) and an observation hole sealing cover (16) respectively, which can prevent fresh air on the ground from entering, improve the sealing effect of the TPU sealing round gasket (1) and the exhaust gas efficiency of the exhaust fan (28).

[0007] As can be seen from the above solution, the manhole opening (22) is sealed with the TPU sealing round gasket (1), the exhaust fan (28) is used to suck and discharge the poisonous gas in the manhole opening (22) and the underground drainage pipe (23), then the vibrating rod (19) enters the underground drainage pipe (23) along the rod guiding pipe (10) to vibrate and discharge the poisonous gas in the drainage pipe sludge (24), and the vibrating rod (19) is also used to directly vibrate and discharge the poisonous gas in the manhole bottom sludge (25). After exhausting all the poisonous gas in the underground drainage pipe (23) and the manhole opening (22), and then vibrating out and sucking and exhausting all the poisonous gas in the manhole bottom sludge (25) and the drainage pipe sludge (24), the multifunctional manhole opening sealing and poisonous gas exhausting device at this manhole opening is withdrawn. When the operators enter the manhole opening (22) and the underground drainage pipe (23) for maintenance operations, the risk of harm to people caused by the poisonous gas in the manhole pipe can be reduced to the lowest level, greatly improving the safety guarantee of the operators when working in the manhole pipe.

[0008] The structure of the present invention is reasonable, easy to use and maintain, economical and practical, and the operation procedure is simple and convenient. After the poisonous gas is exhausted at the manhole opening by the operators, when entering the manhole pipe for operation, if a multifunctional manhole opening sealing and poisonous gas exhausting device is set on each of the two adjacent manhole openings in the front and back of the road for operation, and the poisonous gas is simultaneously sucked and exhausted at the two end manhole openings, the amount of fresh air entering the middle manhole opening will increase, greatly increasing the safety guarantee of the operators at the middle manhole opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Top view of the manhole opening metal frame of the embodiment of the present invention

[0010] Figure 2 Top view of the TPU sealing round gasket of the embodiment of the present invention

[0011] Figure 3 Front view of the manhole opening sealing and poisonous gas exhausting device of the embodiment of the present invention

[0012] Figure 4 Schematic diagram of the rod guiding pipe of the embodiment of the present invention DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be further described below in conjunction with the embodiments and the drawings.

[0014] SeeFigure 1 The manhole metal frame (2) is welded with metal bars (18). On the manhole metal frame (2), there are metal frame exhaust holes (17), and the rod guiding pipe (10) under the manhole (22) is fixed with the frame pipe positioning hole (20) and the hook rope positioning hole (21). A plurality of manhole limit pins (26) are inserted into the metal frame positioning holes (27) on the manhole metal frame (2) to prevent the horizontal displacement of the manhole metal frame (2) on the manhole (22).

[0015] See Figure 2 On the TPU sealing gasket (1), there are TPU exhaust holes (4). On the TPU exhaust holes (4), a TPU exhaust frame (8) and an air frame sealing ring (9) are fixed. The exhaust fan (28) is connected and fixed to the TPU exhaust frame (8). On the TPU sealing gasket (1), there is a vibrating rod socket (5) to facilitate the insertion of the vibrating rod (19) for operation under the manhole (22). After the operation of the vibrating rod (19), the vibrating rod (19) is pulled out, and the rod mouth sealing cover (6) is used to cover and seal the vibrating rod socket (5). There is also a periscope observation hole (15) and an observation hole sealing cover (16). On the TPU sealing gasket (1), there is a sealing water bag ring (3), and the sealing water bag ring (3) is fixed on the TPU sealing gasket (1) with the water bag fixing belt (29). The diameter of the TPU sealing gasket (1) is larger than that of the manhole metal frame (2) and the manhole (22), and it can completely seal and cover the manhole metal frame (2) and the manhole (22) to ensure that fresh air on the ground does not enter the manhole (22).

[0016] See Figure 3 The manhole (22) is sealed with the TPU sealing gasket (1), and the exhaust fan (28) is used to suck out the poisonous gas in the manhole (22) and the underground drainage pipe (23). Then, the vibrating rod (19) enters the underground drainage pipe (23) along the rod guiding pipe (10) to vibrate and discharge the poisonous gas in the drainage pipe sludge (24). The vibrating rod (19) can also be directly used to vibrate and discharge the poisonous gas in the manhole bottom sludge (25). After the poisonous gas in the underground drainage pipe (23) and the manhole (22) is completely discharged, and after the poisonous gas in the manhole bottom sludge (25) and the drainage pipe sludge (24) is vibrated out and sucked out, the multi-functional manhole sealing and poison gas discharging device at this manhole is withdrawn, effectively guaranteeing the safety of the operators when entering the manhole (22) and the underground drainage pipe (23) for maintenance operations. The sealing water bag ring (3) is used to assist in sealing the manhole (22) on the TPU sealing gasket (1) to prevent the ground air from flowing into the manhole (22) when the exhaust fan (28) is working, and to reduce the work efficiency of the exhaust fan (28).

[0017] See Figure 4, on the rod guide pipe (10), a guide pipe hook (11) is provided. After the rod guide pipe (10) is led into the underground drain pipe (23) by the guide pipe hook rope (12), it is fixed; the guide pipe positioning hook (13) is connected to the guide pipe adjustment hole (14) and fixed on the frame pipe positioning hole (20) of the manhole metal frame (2), which is convenient for adjusting the height of the rod guide pipe (10) and the manhole (22), so that the rod guide pipe (10) can be easily positioned in the underground drain pipe (23).

Claims

1. Multifunctional manhole cover sealing and exhaust gas detoxification device, comprising a TPU sealing round pad (1), a manhole cover metal frame (2), a sealing water bag ring (3), a TPU exhaust hole (4), a vibrator socket (5), a rod guiding pipe (10) and a vibrator (19), characterized in that: On the TPU sealing gasket (1), there is a TPU exhaust hole (4). On the TPU exhaust hole (4), a TPU exhaust frame (8) and an air frame sealing ring (9) are fixed. The exhaust fan (28) is connected and fixed to the TPU exhaust frame (8). On the TPU sealing gasket (1), there are a vibrating rod socket (5) and a rod socket sealing cover (6), and a periscope observation hole (15) and an observation hole sealing cover (16) are also provided. On the TPU sealing gasket (1), there is a water pressure sealing bag ring (3). Under the TPU sealing gasket (1), there is a manhole metal frame (2). The TPU sealing gasket (1) completely seals and covers the manhole metal frame (2) and the manhole (22).

2. The multi-functional manhole cover sealing and poisonous gas exhausting device according to claim 1, wherein: The manhole metal frame (2) is welded with metal bars (18). On the manhole metal frame (2), there is a metal frame exhaust hole (17). The rod guiding pipe (10) under the manhole (22) is fixed with a frame pipe positioning hole (20) and a hook rope positioning hole (21). The horizontal displacement of the manhole metal frame (2) on the manhole (22) is prevented by the metal frame positioning hole (27) and the wellhead limit pin (26) on the manhole metal frame (2).

3. The multi-functional manhole cover sealing and poison gas exhausting device according to claim 1, wherein: On the rod guiding pipe (10), there is a guiding pipe hook ring (11), which is fixed to the hook rope positioning hole (21) of the manhole metal frame (2) with a guiding pipe hook rope (12). The vibrating rod (19) enters the underground drain pipe (23) along the rod guiding pipe (10) to vibrate and discharge the poisonous gas in the drain pipe sludge (24), and the vibrating rod (19) directly vibrates and discharges the poisonous gas in the manhole bottom sludge (25). The poisonous gas in the manhole (22) is efficiently discharged by the exhaust fan (28) on the TPU sealing gasket (1). The guiding pipe positioning hook (13) is connected to the guiding pipe adjusting hole (14) and fixed to the frame pipe positioning hole (20) of the manhole metal frame (2) to make the rod guiding pipe (10) suitable for the height of the underground drain pipe (23) and the manhole (22).

4. The multi-functional manhole cover sealing and poison gas exhausting device according to claim 1, wherein: On the water pressure sealing bag ring (3), there is a water bag mouth sealing cover (7), and the water pressure sealing bag ring (3) is fixed to the TPU sealing gasket (1) with a water bag fixing strap (29).

5. The multi-functional manhole cover sealing and poison gas exhausting device according to claim 1, wherein: Next to the vibrating rod socket (5) and the periscope observation hole (15), there are respectively a rod socket sealing cover (6) and an observation hole sealing cover (16), which improve the sealing effect of the TPU sealing gasket (1) and the poisonous gas discharge efficiency of the exhaust fan (28).

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