CN115262645B - A manhole cover that is easy to position - Google Patents

Abstract

The invention discloses a manhole cover that is easy to position. It includes a manhole seat. A warning component is installed on the inside of the manhole seat. A sliding groove is provided on the inside of the manhole seat. A floating box is slidably installed on the inside of the sliding groove. The top of the floating box is installed with a Warning arc plate, a rotating seat is installed on the inside of the manhole seat, a manhole cover is installed on the outside of the rotating seat, a connection box is installed on one end of the manhole cover, and the other end connected to the copper end is electrically connected to a second live wire, and the second live wire The output terminal is electrically connected to an LED warning light. Place the manhole cover vertically on the top of the manhole seat. The rolling copper ball will slide to one side from the tilt seat. At the same time, the LED warning light will light up to warn surrounding pedestrians, and in heavy rain weather , the rainwater will fix the floating box fixed magnet and the adsorption iron sheet to fix the warning arc plate, preventing debris and inattentive pedestrians from falling into the inside of the manhole when the water level drops and rainwater pours back, further serving as a warning to pedestrians, thereby preventing Personal injury and property damage.

Description

A manhole cover that is easy to position

Technical field

The invention relates to the technical field of manhole covers, and in particular to a manhole cover that is convenient for positioning.

Background technique

There will be many underground pipelines in urban construction, such as sewers, underground gas pipelines, water pipelines, power pipelines, communication pipelines, national defense pipelines, etc. These pipelines must have an outlet to the ground every other section. The section from the pipeline to the ground It is called a manhole. The mouth of the manhole is usually flush with the ground, so a cover is needed. The cover used to cover the manhole is called a manhole cover. Manhole covers are usually made of reinforced concrete, metal, reinforced plastics and other materials, and are mainly round or square in shape. On the manhole cover, the purpose of the underground pipe, the management unit and the telephone number of the underground pipe are generally indicated;

However, when the existing manhole cover is opened for use or in heavy rain, it is difficult to effectively remind and prevent pedestrians and debris from falling into the manhole, which will cause certain economic losses and personal injuries. In order to avoid the above technical problems , it is indeed necessary to provide a manhole cover that is easy to position to overcome the defects in the prior art.

Contents of the invention

The present invention provides a manhole cover that is easy to position, which can effectively solve the problem that the existing manhole cover proposed in the above background technology is difficult to effectively remind and prevent pedestrians and debris from falling into the inside of the manhole when it is opened for use or in heavy rain weather. , which will cause certain economic losses and personal injuries.

In order to achieve the above object, the present invention provides the following technical solution: a manhole cover that is easy to position, including a manhole seat, and a warning component is installed on the inside of the manhole seat;

The warning component includes a sliding groove, a floating box, a warning arc plate, a fixed magnet, an adsorption iron sheet, a rotating seat, a manhole cover, a connection box, a warning light battery box, a first live wire, a connecting copper end, a tilting splint, and a tilting seat. Rolling copper ball, second live wire, LED warning light, connecting neutral wire and warning hole;

A sliding groove is provided on the inside of the manhole seat. A floating box is slidably installed on the inside of the sliding groove. A warning arc plate is installed on the top of the floating box. Fixed magnets are installed on both sides of the top of the floating box. An adsorption iron piece is installed at the inner bottom of the manhole seat corresponding to the fixed magnet. A rotating seat is installed on the inner side of the manhole seat. A manhole cover is installed on the outside of the rotating seat. One end surface of the manhole cover A connection box is installed. A warning light battery box is installed on one end of the connection box. The output end of the warning light battery box is electrically connected to a first live wire. The output end of the first live wire is electrically connected to a connection. Copper end, an inclined splint is installed at a position corresponding to the inner side of the connection box and the connecting copper end. An inclined seat is installed on one end face of the inclined splint. A rolling copper ball is installed on the inner side of the inclined splint. The connection The other end of the copper end is electrically connected to a second live wire, the output end of the second live wire is electrically connected to an LED warning light, the output end of the warning light battery box is electrically connected to a neutral line, and the manhole cover There is a warning hole on the end face of one side.

Preferably, the warning arc plate is provided with two pieces, and the two warning arc plates are symmetrically installed at the inner position of the sliding groove.

Preferably, the input end of the LED warning light is electrically connected to the input end connected to the neutral line. There are several warning holes, and several warning holes are evenly provided on one end surface of the manhole cover.

Preferably, there are two connecting copper ends, and the two connecting copper ends are symmetrically installed on both sides of the inclined base.

Preferably, a positioning assembly is installed on the top of the manhole seat;

The positioning component includes a threaded hole, a threaded rod, a clamping plate, a sliding groove plate, a rotating chamber, a transverse chute, a supporting sliding rod, a supporting threaded seat, a supporting screw rod and a bottom positioning seat;

The top of the manhole seat is provided with a threaded hole, the inside of the threaded hole is threadedly connected to a threaded rod, the outside of the threaded rod is sleeved with a clamping plate, and the top of the clamping plate is equipped with a sliding groove plate, so A rotation chamber is formed between the clamping plate and the sliding groove plate. A transverse chute is provided on the inside of the sliding groove plate. A support slide rod is slidably connected to the inside of the transverse chute. One end of the support slide rod A support threaded seat is connected, the inner side of the support threaded seat is threadedly connected with a support screw, and a bottom positioning seat is installed at the bottom end of the manhole seat.

Preferably, there are two threaded holes, and the two threaded holes are symmetrically opened at the top position of the manhole seat. There are two sliding groove plates, and the two sliding groove plates are symmetrically installed at the top of the manhole seat.

Preferably, there are two bottom positioning seats, the two bottom positioning seats are symmetrically installed at the bottom end of the manhole seat, and a movable hole is provided on the inside of the support thread seat at a position corresponding to the support screw.

Preferably, a flow guide component is installed inside the manhole seat;

The flow guide assembly includes a mounting base, an air inlet pipe, a limit ring, a filter element, a top filter ring, a gas collecting cone, a bellows, an air outlet hood, an exhaust fan and an exhaust battery;

A mounting seat is installed on the inside of the manhole seat, an air inlet pipe is embedded on the inside of the mounting seat, a limit ring is installed on the inside of the air inlet pipe, a filter element is installed on the inside of the air inlet pipe, and the outer top of the air inlet pipe A top filter ring is threadedly connected to the position, a gas collecting cone is installed at the bottom end of the air inlet pipe, a bellows is connected to the bottom end of the gas collecting cone, and an air outlet hood is connected to the air outlet end of the bellows pipe. An exhaust fan is installed inside the air intake pipe, and an exhaust battery is installed at the bottom of the manhole seat.

Preferably, an embedding groove is provided on the inner side of the mounting base at a position corresponding to the air inlet pipe, and the air inlet pipe is installed on the inner side of the mounting base through the embedding groove.

Preferably, an air outlet is provided at a position corresponding to the bottom end of the gas collecting cone and the bellows, and the input end of the exhaust fan is electrically connected to the output end of the exhaust battery.

Compared with the existing technology, the beneficial effects of the present invention are: the structure of the present invention is scientific and reasonable, and it is safe and convenient to use:

1. A warning component is provided. The maintenance personnel place the manhole cover vertically on the top of the manhole seat. The rolling copper ball will slide to one side from the tilt seat. At the same time, the LED warning light will be connected by the first live wire, the second live wire and the connecting neutral wire. It will light up to warn surrounding pedestrians, and passers-by can observe the lit warning hole from the warning hole on one side of the manhole cover and the other side of the manhole cover, thus alerting people that construction is underway, and in heavy rain weather, rain The floating box will be lifted upward to lift the warning arc plate to the top of the manhole cover. At this time, the fixed magnet and the adsorbing iron piece will fix the warning arc plate, thereby preventing debris and debris from pouring back when the water level drops. Pedestrians who pay attention fall into the inside of the manhole, which further serves as a warning to pedestrians, thereby preventing personal injury and property loss, and further improving the safety of the use of the manhole.

2. A positioning component is provided. Rotate the threaded rod inside the rotating chamber to tighten it to the inside of the threaded hole. Pull the support slide rod to both sides. At this time, pull the support slide rod to a dry position on the road surface on both sides. , thereby fixing the support slide rods on both sides to the top of the road surface to position the manhole seat. This can prevent the manhole seat from falling due to its own gravity when the cement is not yet dry, thereby ensuring that the manhole seat can be fixed at a horizontal position with the road surface, preventing the manhole seat from falling due to its own gravity. Form potholes on the road surface to ensure that the manhole seat can be used normally. After the cement is dry, take the two sliding groove plates to the bottom of the manhole seat and tighten the threaded rod to the inside of the bottom positioning seat to secure the manhole seat. The snap connection prevents the manhole seat from being stolen from the top.

3. It is equipped with a diversion component. When people need to go down to the well for maintenance work, they can turn on the exhaust fan to suck the outside air into the inside of the air intake pipe through the top filter ring, and then into the inside of the air collecting cone through the filter element. Finally, Then it enters the inside of the corrugated pipe, and then sprays into the well through the air outlet cover. At this time, the maintenance personnel underground can breathe fresh air through the air outlet cover to prevent the maintenance personnel from fainting due to lack of oxygen in the thin air in the well, thereby ensuring the health and safety of the maintenance personnel. Further improve the safety of underground maintenance work.

Description of the drawings

The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

In the attached picture:

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic diagram of the installation structure of the floating box of the present invention;

Figure 3 is a schematic diagram of the installation structure of the connection box of the present invention;

Figure 4 is a schematic structural diagram of the warning component of the present invention;

Figure 5 is a schematic diagram of the installation structure of the tilt seat of the present invention;

Figure 6 is a schematic structural diagram of the positioning assembly of the present invention;

Figure 7 is a schematic diagram of the installation structure of the mounting base of the present invention;

Figure 8 is a schematic structural diagram of the flow guide assembly of the present invention;

Numbers in the picture: 1. Manhole seat;

2. Warning component; 201. Sliding groove; 202. Floating box; 203. Warning arc plate; 204. Fixed magnet; 205. Adsorption iron sheet; 206. Rotating seat; 207. Manhole cover; 208. Connection box; 209. Warning Light battery box; 210, first live wire; 211, connect copper terminal; 212, tilt plywood; 213, tilt seat; 214, rolling copper ball; 215, second live wire; 216, LED warning light; 217, connect neutral wire; 218. Warning hole;

3. Positioning component; 301. Threaded hole; 302. Threaded rod; 303. Clamping plate; 304. Sliding groove plate; 305. Rotating chamber; 306. Transverse chute; 307. Support sliding rod; 308. Support threaded seat ; 309. Support screw; 310. Bottom positioning seat;

4. Flow guide assembly; 401. Mounting seat; 402. Air inlet pipe; 403. Limit ring; 404. Filter element; 405. Top filter ring; 406. Gas collecting cone; 407. Bellows; 408. Air outlet cover; 409 , exhaust fan; 410, exhaust battery.

Implementation

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Embodiment: As shown in Figures 1-5, the present invention provides a technical solution, a manhole cover that is easy to position, including a manhole seat 1, and a warning component 2 is installed on the inside of the manhole seat 1;

Warning component 2 includes sliding groove 201, floating box 202, warning arc plate 203, fixed magnet 204, adsorption iron sheet 205, rotating base 206, manhole cover 207, connection box 208, warning light battery box 209, first live wire 210, connection Copper end 211, tilting splint 212, tilting seat 213, rolling copper ball 214, second live wire 215, LED warning light 216, connecting neutral wire 217 and warning hole 218;

A sliding groove 201 is provided on the inner side of the manhole seat 1. A floating box 202 is slidably installed on the inner side of the sliding groove 201. A warning arc plate 203 is installed on the top of the floating box 202. There are two warning arc plates 203 and two warning arc plates 203. It is symmetrically installed at the inner position of the sliding groove 201 to facilitate blocking debris. Fixed magnets 204 are installed on both sides of the top of the floating box 202. An adsorption iron piece 205 is installed at the inner bottom position of the manhole seat 1 corresponding to the fixed magnet 204. , a rotating base 206 is installed on the inside of the manhole seat 1, a manhole cover 207 is installed on the outside of the rotating base 206, a connection box 208 is installed on one end of the manhole cover 207, and a warning light battery box is installed on one end of the connection box 208 209. The output end of the warning light battery box 209 is electrically connected to the first live wire 210. The output end of the first live wire 210 is electrically connected to a connecting copper terminal 211. There are two connecting copper terminals 211, and the two connecting copper terminals 211 are provided. Symmetrically installed on both sides of the tilt base 213, it is convenient to connect the warning light battery box 209. A tilt splint 212 is installed on the inside of the connection box 208 at a position corresponding to the connecting copper end 211. A tilt base 213 is installed on one end of the tilt splint 212. , a rolling copper ball 214 is installed and rotated on the inside of the inclined plywood 212, the other end connected to the copper end 211 is electrically connected to the second live wire 215, the output end of the second live wire 215 is electrically connected to the LED warning light 216, and the warning light battery box The output end of 209 is electrically connected to a neutral line 217. A warning hole 218 is provided on one side of the manhole cover 207. The input end of the LED warning light 216 is electrically connected to an input end connected to the neutral line 217. The warning hole 218 is provided with a Several warning holes 218 are evenly opened on one side of the manhole cover 207 to facilitate people to observe the LED warning lights 216.

A positioning assembly 3 is installed on the top of the manhole seat 1;

The positioning component 3 includes a threaded hole 301, a threaded rod 302, a clamping plate 303, a sliding groove plate 304, a rotating chamber 305, a transverse chute 306, a supporting sliding rod 307, a supporting threaded seat 308, a supporting screw rod 309 and a bottom positioning seat 310 ;

The top of the manhole seat 1 is provided with a threaded hole 301. The inside of the threaded hole 301 is threadedly connected with a threaded rod 302. The outside of the threaded rod 302 is sleeved with a clamping plate 303. The top of the clamping plate 303 is installed with a sliding groove plate 304. The threaded There are two holes 301, two threaded holes 301 are symmetrically opened at the top position of the manhole seat 1, and there are two sliding groove plates 304. The two sliding groove plates 304 are symmetrically installed at the top of the manhole seat 1 to facilitate alignment. The manhole seat 1 is positioned, and a rotation chamber 305 is formed between the clamping plate 303 and the sliding groove plate 304. A transverse chute 306 is provided on the inside of the sliding groove plate 304, and a supporting slide bar 307 is slidably connected to the inside of the transverse chute 306. , One end of the support slide rod 307 is connected to a support threaded seat 308, and the inner side of the support threaded seat 308 is threadedly connected to a support screw 309. A bottom positioning seat 310 is installed at the bottom of the manhole seat 1, and there are two bottom positioning seats 310. A bottom positioning seat 310 is symmetrically installed at the bottom of the manhole seat 1. A movable hole is provided on the inside of the support thread seat 308 at a position corresponding to the support screw 309, which is helpful for adjusting the height of the support screw 309.

A flow guide assembly 4 is installed inside the manhole seat 1;

The flow guide assembly 4 includes a mounting base 401, an air inlet pipe 402, a limit ring 403, a filter element 404, a top filter ring 405, a gas collecting cone 406, a bellows 407, an air outlet hood 408, an exhaust fan 409 and an exhaust battery 410;

A mounting base 401 is installed on the inner side of the manhole seat 1. An embedding groove is provided on the inner side of the mounting base 401 at a position corresponding to the air inlet pipe 402. The air inlet pipe 402 is installed on the inner side of the mounting base 401 through the embedding groove, making it convenient to use the air inlet pipe 402 for air intake. An air intake pipe 402 is embedded inside the mounting base 401. A limit ring 403 is installed on the inner side of the air intake pipe 402. A filter element 404 is installed on the inner side of the air intake pipe 402. A top filter ring 405 is threadedly connected to the outer top of the air intake pipe 402. A gas collecting cone 406 is installed at the bottom of the gas pipe 402. A gas outlet is provided at the bottom end of the gas collecting cone 406 and the bellows 407, which is conducive to gas transportation. The bottom end of the gas collecting cone 406 is connected with a bellows 407. The bellows The outlet end of the pipe 407 is connected to an outlet cover 408, an exhaust fan 409 is installed inside the air inlet pipe 402, an exhaust battery 410 is installed at the bottom of the manhole seat 1, the input end of the exhaust fan 409 and the output of the exhaust battery 410 terminal electrical connection.

The working principle and usage process of the present invention: first, after placing the manhole seat 1 into the hole dug in advance, it is difficult to effectively support the manhole seat 1 because the cement has not been completely dried. At this time, the rotating chamber 305 Turn the threaded rod 302 inside to tighten it to the inside of the threaded hole 301. At this time, the two sliding groove plates 304 will be fixed on the top of the manhole seat 1, and then pull the support slide rods 307 to both sides. At this time, the support slide bars 307 will be pulled. Pull the rod 307 to a dry position on the road surface on both sides, and then rotate the support screw rod 309 downward on the inside of the support thread seat 308, thereby fixing the support slide rods 307 on both sides to the top of the road surface to position the manhole seat 1. It can prevent the manhole seat 1 from falling due to its own gravity when the cement is not yet dry, thereby ensuring that the manhole seat 1 can be fixed at a horizontal position with the road surface, preventing the formation of potholes on the road surface, ensuring that the manhole seat 1 can be used normally, and after the cement is dry , take the two sliding groove plates 304 to the bottom of the manhole seat 1, and tighten the threaded rod 302 to the inside of the bottom positioning seat 310, thereby clamping the manhole seat 1, thereby preventing the manhole seat 1 from being stolen from the top ;

Then, when people need to go down the well for line and pipeline maintenance, the maintenance personnel can lift the manhole cover 207 on one side of the rotating seat 206, so that the manhole cover 207 is vertically placed on the top of the manhole seat 1. At this time, the rolling copper ball 214 will tilt from The seat 213 slides to one side. At this time, the rolling copper ball 214 will slide to the inside of the two connecting copper terminals 211. At this time, the first live wire 210 and the second live wire 215 will be connected by the rolling copper ball 214. At the same time, the LED The warning light 216 will be connected by the first live wire 210 and the second live wire 215 and the connecting neutral wire 217, so that it will light up to warn surrounding pedestrians, and passers-by can use the warning hole 218 on one side of the manhole cover 207 and the side of the manhole cover 207 to A lighted warning hole 218 is observed on the other side to alert people that construction is underway. In heavy rain, the manhole cover 207 on the road will be washed up by the water inside the manhole. At the same time, the rainwater entering the inside of the sliding groove 201 will The floating box 202 is lifted upward to lift the warning arc plate 203 to the top of the manhole cover 207. At this time, the fixed magnet 204 and the adsorbing iron piece 205 are used to fix the warning arc plate 203, thereby preventing the warning arc plate 203 from being poured in when the water level drops. Debris and inattentive pedestrians fall into the interior of the manhole, which serves as a warning to pedestrians, thereby preventing personal injury and property loss, and further improving the safety of manhole use;

Finally, when people need to go down to the well for maintenance work, the exhaust fan 409 is turned on to suck the outside air into the inside of the air intake pipe 402 through the top filter ring 405, and then into the inside of the air collecting cone 406 through the filter element 404, and finally It enters the inside of the bellows 407 and then sprays into the well through the air outlet hood 408. At this time, the maintenance personnel underground can breathe fresh air through the air outlet hood 408 to prevent the maintenance personnel from fainting due to lack of oxygen due to thin air in the well, thereby ensuring the health of the maintenance personnel. Safety, further improving the safety of underground maintenance work.

Finally, it should be noted that the above are only preferred examples of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still Modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an inspection shaft lid convenient to location, includes inspection shaft seat (1), its characterized in that: an alarm assembly (2) is arranged on the inner side of the inspection well seat (1);

the warning assembly (2) comprises a sliding groove (201), a floating box (202), a warning arc plate (203), a fixed magnet (204), an adsorption iron sheet (205), a rotating seat (206), a manhole cover (207), a connecting box (208), a warning lamp battery box (209), a first fire wire (210), a connecting copper end (211), a tilting clamping plate (212), a tilting seat (213), a rolling copper ball (214), a second fire wire (215), an LED warning lamp (216), a connecting zero line (217) and a warning hole (218);

the utility model discloses a novel electric power tool, including inspection shaft seat (1), slide groove (201) has been seted up to the inboard, the interior side sliding of slide groove (201) installs and floats box (202), warning arc board (203) are installed on the top of box (202), fixed magnet (204) are installed to the top both sides of box (202), the inboard bottom position department of inspection shaft seat (1) corresponds position department with fixed magnet (204) and installs absorption iron sheet (205), rotation seat (206) are installed to the inboard of inspection shaft seat (1), rotation seat (206) are installed in the outside rotation of rotation seat (206), inspection shaft lid (207) are installed to one side terminal surface, connecting box (208) are installed to one side terminal surface of inspection shaft lid (207), warning lamp battery box (209) are installed to one side terminal surface of connecting box (208), first live wire (210) are connected to the output electric connection of warning lamp battery box (209), copper connection (211) are connected to the output of first live wire (210), copper connection (212) are located corresponding position of inboard and are installed to connection copper connection (211), copper connection clamp plate (212) are installed to the inboard, copper connection clamp plate (212) are installed to one side of the other end (212), copper connection clamp plate (212) are installed to one side of the inclined clamp plate (213), the output end electric connection of second live wire (215) has LED warning light (216), the output electric connection of warning light battery case (209) has connection zero line (217), warning hole (218) have been seted up to one side terminal surface of inspection shaft lid (207).

2. A well cover for facilitating positioning as defined in claim 1, wherein: the two warning arc plates (203) are arranged, and the two warning arc plates (203) are symmetrically arranged at the inner side of the sliding groove (201).

3. A well cover for facilitating positioning as defined in claim 1, wherein: the input end of the LED warning lamp (216) is electrically connected with the input end of the connecting zero line (217), a plurality of warning holes (218) are formed, and the warning holes (218) are uniformly formed in one side end face of the inspection well cover (207).

4. A well cover for facilitating positioning as defined in claim 1, wherein: the two connecting copper ends (211) are arranged, and the two connecting copper ends (211) are symmetrically arranged on two side end surfaces of the inclined seat (213).

5. A well cover for facilitating positioning as defined in claim 1, wherein: a positioning component (3) is arranged at the top end of the inspection well seat (1);

the positioning assembly (3) comprises a threaded hole (301), a threaded rod (302), a clamping plate (303), a sliding groove plate (304), a rotating chamber (305), a transverse sliding groove (306), a supporting sliding rod (307), a supporting threaded seat (308), a supporting screw (309) and a bottom positioning seat (310);

screw hole (301) have been seted up on the top of inspection shaft seat (1), the inboard threaded connection of screw hole (301) has threaded rod (302), joint board (303) have been cup jointed in the outside of threaded rod (302), slip frid (304) are installed on the top of joint board (303), be formed with between joint board (303) and slip frid (304) and rotate cavity (305), horizontal spout (306) have been seted up to the inboard of slip frid (304), the inboard sliding connection of horizontal spout (306) has support slide bar (307), the one end of support slide bar (307) is connected with support screw seat (308), the inboard threaded connection of support screw seat (308) has supporting screw (309), bottom positioning seat (310) are installed to the bottom of inspection shaft seat (1).

6. The inspection well cover convenient to position according to claim 5, wherein: two threaded holes (301) are formed, the two threaded holes (301) are symmetrically formed in the top end of the inspection well seat (1), two sliding groove plates (304) are arranged, and the two sliding groove plates (304) are symmetrically mounted on the top end of the inspection well seat (1).

7. The inspection well cover convenient to position according to claim 5, wherein: the two bottom positioning seats (310) are arranged, the two bottom positioning seats (310) are symmetrically arranged at the bottom end position of the inspection well seat (1), and movable holes are formed in the inner side of the supporting threaded seat (308) and the position corresponding to the supporting screw (309).

8. A well cover for facilitating positioning as defined in claim 1, wherein: a diversion component (4) is arranged on the inner side of the inspection well seat (1);

the flow guide assembly (4) comprises a mounting seat (401), an air inlet pipe (402), a limiting ring (403), a filter element (404), a top filter screen ring (405), a gas collecting cone (406), a corrugated pipe (407), an air outlet cover (408), an exhaust fan (409) and an exhaust battery (410);

mounting seat (401) are installed to the inboard of inspection shaft seat (1), intake pipe (402) are embedded to the inboard of mounting seat (401), spacing ring (403) are installed to the inboard of intake pipe (402), filter core (404) are installed to the inboard of intake pipe (402), outside top position department threaded connection of intake pipe (402) has top filter screen ring (405), gas collection awl (406) are installed to the bottom of intake pipe (402), the bottom intercommunication of gas collection awl (406) has bellows (407), the end of giving vent to anger of bellows (407) is connected with cover of giving vent to anger (408), air discharge fan (409) are installed to the inboard of intake pipe (402), exhaust battery (410) are installed to the bottom of inspection shaft seat (1).

9. The inspection well cover convenient to position according to claim 8, wherein: an embedded groove is formed in the inner side of the mounting seat (401) and corresponds to the air inlet pipe (402), and the air inlet pipe (402) is mounted on the inner side of the mounting seat (401) through the embedded groove.

10. The inspection well cover convenient to position according to claim 8, wherein: the bottom of the gas collection cone (406) is provided with a gas outlet hole at a position corresponding to the corrugated pipe (407), and the input end of the exhaust fan (409) is electrically connected with the output end of the exhaust battery (410).